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-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed.api798
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed.c2986
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed.h617
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_affinity.c7
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_api.c772
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_classify.c42
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_cli.c758
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_doc.rst729
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_format.c293
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_handoff.c1
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_in2out.c867
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_inlines.h379
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_out2in.c444
-rw-r--r--src/plugins/nat/nat44-ed/tcp_conn_track.rst65
14 files changed, 4807 insertions, 3951 deletions
diff --git a/src/plugins/nat/nat44-ed/nat44_ed.api b/src/plugins/nat/nat44-ed/nat44_ed.api
index c65b7a81166..322260f7f96 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed.api
+++ b/src/plugins/nat/nat44-ed/nat44_ed.api
@@ -13,13 +13,13 @@
* limitations under the License.
*/
-option version = "5.3.0";
+option version = "5.5.0";
import "vnet/ip/ip_types.api";
import "vnet/interface_types.api";
import "plugins/nat/lib/nat_types.api";
/**
- * @file nat44.api
+ * @file nat44_ed.api
* @brief VPP control-plane API messages.
*
* This file defines VPP control-plane API messages which are generally
@@ -35,41 +35,6 @@ enum nat44_config_flags : u8
NAT44_IS_OUT2IN_DPO = 0x08,
};
-/** \brief Enable/disable NAT44 plugin
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param inside_vrf - inside vrf id
- @param outside_vrf - outside vrf id
- @param users - maximum number of users per thread
- (NAT44_IS_ENDPOINT_INDEPENDENT)
- @param user_memory - overwrite hash allocation parameter
- (NAT44_IS_ENDPOINT_INDEPENDENT)
- @param sessions - maximum number of sessions per thread
- @param session_memory - overwrite hash allocation parameter
- @param user_sessions - maximum number of sessions per user
- (NAT44_IS_ENDPOINT_INDEPENDENT)
- @param enable - true if enable, false if disable
- @param flags - flag NAT44_IS_ENDPOINT_INDEPENDENT,
- NAT44_IS_ENDPOINT_DEPENDENT,
- NAT44_IS_STATIC_MAPPING_ONLY,
- NAT44_IS_CONNECTION_TRACKING,
- NAT44_IS_OUT2IN_DPO
-*/
-autoreply define nat44_plugin_enable_disable {
- option deprecated;
- u32 client_index;
- u32 context;
- u32 inside_vrf;
- u32 outside_vrf;
- u32 users;
- u32 user_memory;
- u32 sessions;
- u32 session_memory;
- u32 user_sessions;
- bool enable;
- vl_api_nat44_config_flags_t flags;
-};
-
/** \brief Enable/disable NAT44ED plugin
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@@ -82,7 +47,6 @@ autoreply define nat44_plugin_enable_disable {
NAT44_IS_CONNECTION_TRACKING
*/
autoreply define nat44_ed_plugin_enable_disable {
- option in_progress;
u32 client_index;
u32 context;
u32 inside_vrf;
@@ -93,146 +57,65 @@ autoreply define nat44_ed_plugin_enable_disable {
vl_api_nat44_config_flags_t flags;
};
-/** \brief Control ping from client to api server request
+/** \brief Enable/disable forwarding for NAT44
+ Forward packets which don't match existing translation
+ or static mapping instead of dropping them.
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
+ @param enable - true for enable, false for disable
*/
-define nat_control_ping
-{
+autoreply define nat44_forwarding_enable_disable {
option deprecated;
u32 client_index;
u32 context;
+ bool enable;
};
-/** \brief Control ping from the client to the server response
+/** \brief Enable/disable NAT IPFIX logging
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
- @param retval - return code for the request
- @param vpe_pid - the pid of the vpe, returned by the server
+ @param domain_id - observation domain ID
+ @param src_port - source port number
+ @param enable - true if enable, false if disable
*/
-define nat_control_ping_reply
-{
+autoreply define nat_ipfix_enable_disable {
option deprecated;
- u32 context;
- i32 retval;
u32 client_index;
- u32 vpe_pid;
+ u32 context;
+ u32 domain_id;
+ u16 src_port;
+ bool enable;
};
-/** \brief Show NAT plugin startup config
+/** \brief Set values of timeouts for NAT sessions (seconds)
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
+ @param udp - UDP timeout (default 300sec)
+ @param tcp_established - TCP established timeout (default 7440sec)
+ @param tcp_transitory - TCP transitory timeout (default 240sec)
+ @param icmp - ICMP timeout (default 60sec)
*/
-define nat_show_config
-{
+autoreply define nat_set_timeouts {
option deprecated;
u32 client_index;
u32 context;
+ u32 udp;
+ u32 tcp_established;
+ u32 tcp_transitory;
+ u32 icmp;
};
-/** \brief DEPRECATED: Show NAT plugin startup config reply
- @param context - sender context, to match reply w/ request
- @param retval - return code for the request
- @param static_mapping_only - if true dynamic translations disabled
- @param static_mapping_connection_tracking - if true create session data
- @param deterministic - if true deterministic mapping
- @param endpoint_dependent - if true endpoint-dependent mode
- @param out2in_dpo - if true out2in dpo mode
- @param dslite_ce - if true DS-Lite is CE/B4 element, if false AFTR elemet
- @param translation_buckets - number of translation hash buckets
- @param translation_memory_size - translation hash memory size
- @param user_buckets - number of user hash buckets
- @param user_memory_size - user hash memory size
- @param max_translations_per_user - maximum number of translations per user
- @param outside_vrf_id - outside VRF id
- @param inside_vrf_id - default inside VRF id
- @param nat64_bib_buckets - number of NAT64 BIB hash buckets
- @param nat64_bib_memory_size - memory size of NAT64 BIB hash
- @param nat64_st_buckets - number of NAT64 session table hash buckets
- @param nat64_st_memory_size - memory size of NAT64 session table hash
-*/
-define nat_show_config_reply
-{
- option deprecated;
- u32 context;
- i32 retval;
- bool static_mapping_only;
- bool static_mapping_connection_tracking;
- bool deterministic;
- bool endpoint_dependent;
- bool out2in_dpo;
- bool dslite_ce;
- u32 translation_buckets;
- u32 translation_memory_size;
- u32 user_buckets;
- u64 user_memory_size;
- u32 max_translations_per_user;
- u32 outside_vrf_id;
- u32 inside_vrf_id;
- u32 nat64_bib_buckets;
- u64 nat64_bib_memory_size;
- u32 nat64_st_buckets;
- u64 nat64_st_memory_size;
-};
-
-/** \brief Show NAT plugin startup config
+/** \brief NAT44 set session limit
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
+ @param session_limit - session limit
+ @param vrf_id - vrf id
*/
-define nat_show_config_2
-{
- option deprecated;
+autoreply define nat44_set_session_limit {
u32 client_index;
u32 context;
-};
-
-/** \brief Show NAT plugin startup config reply
- @param context - sender context, to match reply w/ request
- @param retval - return code for the request
- @param static_mapping_only - if true dynamic translations disabled
- @param static_mapping_connection_tracking - if true create session data
- @param deterministic - if true deterministic mapping
- @param endpoint_dependent - if true endpoint-dependent mode
- @param out2in_dpo - if true out2in dpo mode
- @param dslite_ce - if true DS-Lite is CE/B4 element, if false AFTR elemet
- @param translation_buckets - number of translation hash buckets
- @param translation_memory_size - translation hash memory size
- @param user_buckets - number of user hash buckets
- @param user_memory_size - user hash memory size
- @param max_translations_per_user - maximum number of translations per user
- @param outside_vrf_id - outside VRF id
- @param inside_vrf_id - default inside VRF id
- @param nat64_bib_buckets - number of NAT64 BIB hash buckets
- @param nat64_bib_memory_size - memory size of NAT64 BIB hash
- @param nat64_st_buckets - number of NAT64 session table hash buckets
- @param nat64_st_memory_size - memory size of NAT64 session table hash
- @param max_translations_per_thread - max translations per worker thread
- @param max_users_per_thread - max users per worker thread
-*/
-define nat_show_config_2_reply
-{
- option deprecated;
- u32 context;
- i32 retval;
- bool static_mapping_only;
- bool static_mapping_connection_tracking;
- bool deterministic;
- bool endpoint_dependent;
- bool out2in_dpo;
- bool dslite_ce;
- u32 translation_buckets;
- u64 translation_memory_size;
- u32 user_buckets;
- u64 user_memory_size;
- u32 max_translations_per_user;
- u32 outside_vrf_id;
- u32 inside_vrf_id;
- u32 nat64_bib_buckets;
- u64 nat64_bib_memory_size;
- u32 nat64_st_buckets;
- u64 nat64_st_memory_size;
- u32 max_translations_per_thread;
- u32 max_users_per_thread;
+ u32 session_limit;
+ u32 vrf_id;
};
/** \brief Show NAT44 plugin running config
@@ -241,7 +124,6 @@ define nat_show_config_2_reply
*/
define nat44_show_running_config
{
- option in_progress;
u32 client_index;
u32 context;
};
@@ -267,7 +149,6 @@ define nat44_show_running_config
*/
define nat44_show_running_config_reply
{
- option in_progress;
u32 context;
i32 retval;
u32 inside_vrf;
@@ -284,41 +165,6 @@ define nat44_show_running_config_reply
vl_api_nat44_config_flags_t flags;
};
-/** \brief Run nat44 garbage collection
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-autoreply define nat44_session_cleanup {
- option deprecated;
- u32 client_index;
- u32 context;
-};
-
-/** \brief NAT44 set session limit
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param session_limit - session limit
- @param vrf_id - vrf id
-*/
-autoreply define nat44_set_session_limit {
- u32 client_index;
- u32 context;
- u32 session_limit;
- u32 vrf_id;
-};
-
-/** \brief Set NAT logging level
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param log_level - logging level
-*/
-autoreply define nat_set_log_level {
- option deprecated;
- u32 client_index;
- u32 context;
- vl_api_nat_log_level_t log_level;
-};
-
/** \brief Set NAT workers
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@@ -352,121 +198,82 @@ define nat_worker_details {
string name[64];
};
-/** \brief Enable/disable NAT IPFIX logging
+/** \brief Add/delete inter VRF NAT44-ED routing table
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
- @param domain_id - observation domain ID
- @param src_port - source port number
- @param enable - true if enable, false if disable
+ @param table_vrf_id - id of (rx) VRF used for resolving
+ destination (tx) VRF during dynamic
+ session creation
+ @param is_add - if true add else del
*/
-autoreply define nat_ipfix_enable_disable {
- option deprecated;
+autoreply define nat44_ed_add_del_vrf_table {
u32 client_index;
u32 context;
- u32 domain_id;
- u16 src_port;
- bool enable;
+ u32 table_vrf_id;
+ bool is_add;
};
-/** \brief Set values of timeouts for NAT sessions (seconds)
+/** \brief Add/del inter VRF NAT44-ED route record
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
- @param udp - UDP timeout (default 300sec)
- @param tcp_established - TCP established timeout (default 7440sec)
- @param tcp_transitory - TCP transitory timeout (default 240sec)
- @param icmp - ICMP timeout (default 60sec)
+ @param table_vrf_id - id of the VRF NAT routing table
+ @param vrf_id - id of resolving destination (tx) VRF table
+ @param is_add - if true add else del
*/
-autoreply define nat_set_timeouts {
- option deprecated;
+autoreply define nat44_ed_add_del_vrf_route {
u32 client_index;
u32 context;
- u32 udp;
- u32 tcp_established;
- u32 tcp_transitory;
- u32 icmp;
+ u32 table_vrf_id;
+ u32 vrf_id;
+ bool is_add;
};
-/** \brief Get values of timeouts for NAT sessions (seconds)
+/** \brief Dump NAT44-ED inter VRF NAT routing tables
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
*/
-define nat_get_timeouts {
- option deprecated;
+define nat44_ed_vrf_tables_dump {
u32 client_index;
u32 context;
-};
-
-/** \brief Get values of timeouts for NAT sessions reply
- @param context - sender context, to match reply w/ request
- @param retval - return code
- @param udp - UDP timeout
- @param tcp_established - TCP established timeout
- @param tcp_transitory - TCP transitory timeout
- @param icmp - ICMP timeout
-*/
-define nat_get_timeouts_reply {
option deprecated;
- u32 context;
- i32 retval;
- u32 udp;
- u32 tcp_established;
- u32 tcp_transitory;
- u32 icmp;
};
-/** \brief Set address and port assignment algorithm
- @param client_index - opaque cookie to identify the sender
+/** \brief NAT44-ED inter VRF NAT routing table details response
@param context - sender context, to match reply w/ request
- @param alg - address and port assignment algorithm:
- 0 - default, 1 - MAP-E, 2 - port range
- (see nat_addr_and_port_alloc_alg_t in nat.h)
- @param psid_offset - number of offset bits (valid only for MAP-E alg)
- @param psid_length - length of PSID (valid only for MAP-E alg)
- @param psid - Port Set Identifier (PSID) value (valid only for MAP-E alg)
- @param start_port - beginning of the port range
- @param end_port - end of the port range
+ @param table_vrf_id - id of the VRF NAT routing table
+ @param n_vrf_ids - number of vrf_ids
+ @param vrf_ids - ids of resolving destination (tx) VRFs
*/
-autoreply define nat_set_addr_and_port_alloc_alg {
- u32 client_index;
+define nat44_ed_vrf_tables_details {
u32 context;
- u8 alg;
- u8 psid_offset;
- u8 psid_length;
- u16 psid;
- u16 start_port;
- u16 end_port;
+ u32 table_vrf_id;
+ u32 n_vrf_ids;
+ u32 vrf_ids[n_vrf_ids];
+ option deprecated;
};
-/** \brief Get address and port assignment algorithm
+/** \brief Dump NAT44-ED inter VRF NAT routing tables
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
*/
-define nat_get_addr_and_port_alloc_alg {
+define nat44_ed_vrf_tables_v2_dump {
u32 client_index;
u32 context;
+ option status="in_progress";
};
-/** \brief Get address and port assignment algorithm reply
+/** \brief NAT44-ED inter VRF NAT routing table details response
@param context - sender context, to match reply w/ request
- @param retval - return code
- @param alg - address and port assignment algorithm:
- 0 - default, 1 - MAP-E, 2 - port range
- (see nat_addr_and_port_alloc_alg_t in nat.h)
- @param psid_offset - number of offset bits (valid only for MAP-E alg)
- @param psid_length - length of PSID (valid only for MAP-E alg)
- @param psid - Port Set Identifier (PSID) value (valid only for MAP-E alg)
- @param start_port - beginning of the port range
- @param end_port - end of the port range
+ @param table_vrf_id - id of the VRF NAT routing table
+ @param n_vrf_ids - number of vrf_ids
+ @param vrf_ids - ids of resolving destination (tx) VRFs
*/
-define nat_get_addr_and_port_alloc_alg_reply {
+define nat44_ed_vrf_tables_v2_details {
u32 context;
- i32 retval;
- u8 alg;
- u8 psid_offset;
- u8 psid_length;
- u16 psid;
- u16 start_port;
- u16 end_port;
+ u32 table_vrf_id;
+ u32 n_vrf_ids;
+ u32 vrf_ids[n_vrf_ids];
+ option status="in_progress";
};
/** \brief Set TCP MSS rewriting configuration
@@ -504,138 +311,73 @@ define nat_get_mss_clamping_reply {
bool enable;
};
-/** \brief Set HA listener (local settings)
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param ip_address - local IP4 address
- @param port - local UDP port number
- @param path_mtu - path MTU between local and failover
-*/
-autoreply define nat_ha_set_listener {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t ip_address;
- u16 port;
- u32 path_mtu;
-};
-
-/** \brief Set HA failover (remote settings)
+/** \brief Set NAT handoff frame queue options
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
- @param ip_address - failover IP4 address
- @param port - failvoer UDP port number
- @param session_refresh_interval - number of seconds after which to send
- session counters refresh
+ @param frame_queue_nelts - number of worker handoff frame queue elements
*/
-autoreply define nat_ha_set_failover {
+autoreply define nat44_ed_set_fq_options {
u32 client_index;
u32 context;
- vl_api_ip4_address_t ip_address;
- u16 port;
- u32 session_refresh_interval;
+ u32 frame_queue_nelts;
};
-/** \brief Get HA listener/local configuration
+/** \brief Show NAT handoff frame queue options
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
*/
-define nat_ha_get_listener {
+define nat44_ed_show_fq_options
+{
u32 client_index;
u32 context;
};
-/** \brief Get HA listener/local configuration reply
+/** \brief Show NAT handoff frame queue options reply
@param context - sender context, to match reply w/ request
- @param retval - return code
- @param ip_address - local IP4 address
- @param port - local UDP port number
- @param path_mtu - Path MTU between local and failover
+ @param retval - return code for the request
+ @param frame_queue_nelts - number of worker handoff frame queue elements
*/
-define nat_ha_get_listener_reply {
+define nat44_ed_show_fq_options_reply
+{
u32 context;
i32 retval;
- vl_api_ip4_address_t ip_address;
- u16 port;
- u32 path_mtu;
+ u32 frame_queue_nelts;
};
-/** \brief Get HA failover/remote settings
+/** \brief Add/delete NAT44 pool address from specific interfce
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param sw_if_index - software index of the interface
+ @param flags - flag NAT_TWICE_NAT if NAT address range for external hosts
*/
-define nat_ha_get_failover {
+autoreply define nat44_add_del_interface_addr {
u32 client_index;
u32 context;
+ bool is_add;
+ vl_api_interface_index_t sw_if_index;
+ vl_api_nat_config_flags_t flags;
};
-/** \brief Get HA failover/remote settings reply
- @param context - sender context, to match reply w/ request
- @param retval - return code
- @param ip_address - failover IP4 address
- @param port - failvoer UDP port number
- @param session_refresh_interval - number of seconds after which to send
- session counters refresh
-*/
-define nat_ha_get_failover_reply {
- u32 context;
- i32 retval;
- vl_api_ip4_address_t ip_address;
- u16 port;
- u32 session_refresh_interval;
-};
-
-/** \brief Flush the current HA data (for testing)
+/** \brief Dump NAT44 pool addresses interfaces
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
*/
-autoreply define nat_ha_flush {
+define nat44_interface_addr_dump {
u32 client_index;
u32 context;
};
-/** \brief Resync HA (resend existing sessions to new failover)
- @param client_index - opaque cookie to identify the sender
+/** \brief NAT44 pool addresses interfaces details response
@param context - sender context, to match reply w/ request
- @param want_resync_event - resync completed event sent to the sender via
- nat_ha_resync_completed_event API message if
- non-zero
- @param pid - sender's pid
-*/
-autoreply define nat_ha_resync
-{
- u32 client_index;
- u32 context;
- u8 want_resync_event;
- u32 pid;
-};
-
-/** \brief Tell client about a HA resync completion event
- @param client_index - opaque cookie to identify the sender
- @param pid - client pid registered to receive notification
- @param missed_count - number of missed (not ACKed) messages
-*/
-define nat_ha_resync_completed_event
-{
- u32 client_index;
- u32 pid;
- u32 missed_count;
-};
-
-service {
- rpc nat_ha_resync returns nat_ha_resync_reply events nat_ha_resync_completed_event;
-};
+ @param sw_if_index - software index of the interface
+ @param flags - flag NAT_TWICE_NAT if NAT address range for external hosts
-/** \brief Del NAT44 user
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param ip_address - IPv4 address
- @param fib_index - FIB index
*/
-autoreply define nat44_del_user {
- u32 client_index;
+define nat44_interface_addr_details {
u32 context;
- vl_api_ip4_address_t ip_address;
- u32 fib_index;
+ vl_api_interface_index_t sw_if_index;
+ vl_api_nat_config_flags_t flags;
};
/** \brief Add/del NAT44 address range
@@ -719,41 +461,42 @@ define nat44_interface_details {
vl_api_interface_index_t sw_if_index;
};
-/** \brief Enable/disbale NAT44 as an interface output feature (postrouting
+/** \brief add/del NAT output interface (postrouting
in2out translation)
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@param is_add - true if add, false if delete
- @param flags - flag NAT_IS_INSIDE if interface is inside else
- interface is outside
@param sw_if_index - software index of the interface
*/
-autoreply define nat44_interface_add_del_output_feature {
+autoendian autoreply define nat44_ed_add_del_output_interface {
u32 client_index;
u32 context;
bool is_add;
- vl_api_nat_config_flags_t flags;
vl_api_interface_index_t sw_if_index;
};
-/** \brief Dump interfaces with NAT44 output feature
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat44_interface_output_feature_dump {
+service {
+ rpc nat44_ed_output_interface_get returns nat44_ed_output_interface_get_reply
+ stream nat44_ed_output_interface_details;
+};
+
+define nat44_ed_output_interface_get
+{
u32 client_index;
u32 context;
+ u32 cursor;
};
-/** \brief NAT44 interface with output feature details response
- @param context - sender context, to match reply w/ request
- @param flags - flag NAT_IS_INSIDE if interface is inside else
- interface is outside
- @param sw_if_index - software index of the interface
-*/
-define nat44_interface_output_feature_details {
+define nat44_ed_output_interface_get_reply
+{
+ u32 context;
+ i32 retval;
+ u32 cursor;
+};
+
+define nat44_ed_output_interface_details
+{
u32 context;
- vl_api_nat_config_flags_t flags;
vl_api_interface_index_t sw_if_index;
};
@@ -779,6 +522,8 @@ define nat44_interface_output_feature_details {
@param tag - opaque string tag
*/
autoreply define nat44_add_del_static_mapping {
+ option deprecated;
+
u32 client_index;
u32 context;
bool is_add;
@@ -817,7 +562,6 @@ autoreply define nat44_add_del_static_mapping {
@param tag - opaque string tag
*/
autoreply define nat44_add_del_static_mapping_v2 {
- option in_progress;
u32 client_index;
u32 context;
bool is_add;
@@ -929,117 +673,6 @@ define nat44_identity_mapping_details {
string tag[64];
};
-/** \brief Add/delete NAT44 pool address from specific interfce
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param is_add - true if add, false if delete
- @param sw_if_index - software index of the interface
- @param flags - flag NAT_TWICE_NAT if NAT address range for external hosts
-*/
-autoreply define nat44_add_del_interface_addr {
- u32 client_index;
- u32 context;
- bool is_add;
- vl_api_interface_index_t sw_if_index;
- vl_api_nat_config_flags_t flags;
-};
-
-/** \brief Dump NAT44 pool addresses interfaces
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat44_interface_addr_dump {
- u32 client_index;
- u32 context;
-};
-
-/** \brief NAT44 pool addresses interfaces details response
- @param context - sender context, to match reply w/ request
- @param sw_if_index - software index of the interface
- @param flags - flag NAT_TWICE_NAT if NAT address range for external hosts
-
-*/
-define nat44_interface_addr_details {
- u32 context;
- vl_api_interface_index_t sw_if_index;
- vl_api_nat_config_flags_t flags;
-};
-
-/** \brief Dump NAT44 users
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat44_user_dump {
- u32 client_index;
- u32 context;
-};
-
-/** \brief NAT44 users response
- @param context - sender context, to match reply w/ request
- @vrf_id - VRF ID
- @param ip_address - IPv4 address
- @param nsessions - number of dynamic sessions
- @param nstaticsessions - number of static sessions
-*/
-define nat44_user_details {
- u32 context;
- u32 vrf_id;
- vl_api_ip4_address_t ip_address;
- u32 nsessions;
- u32 nstaticsessions;
-};
-
-/** \brief NAT44 user's sessions
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param ip_address - IPv4 address of the user to dump
- @param vrf_id - VRF_ID
-*/
-define nat44_user_session_dump {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t ip_address;
- u32 vrf_id;
-};
-
-/** \brief NAT44 user's sessions response
- @param context - sender context, to match reply w/ request
- @param outside_ip_address - outside IPv4 address
- @param outside_port - outside port
- @param inside_ip_address - inside IPv4 address
- @param inside_port - inside port
- @param protocol - protocol
- @param flags - flag NAT_IS_STATIC if session is static,
- flag NAT_IS_TWICE_NAT if session is twice-nat,
- flag NAT_IS_EXT_HOST_VALID if external host address
- and port are valid
- @param last_heard - last heard timer
- @param total_bytes - count of bytes sent through session
- @param total_pkts - count of pakets sent through session
- @param ext_host_address - external host IPv4 address
- @param ext_host_port - external host port
- @param ext_host_nat_address - post-NAT external host IPv4 address (valid
- only if twice-nat session)
- @param ext_host_nat_port - post-NAT external host port (valid only if
- twice-nat session)
-*/
-define nat44_user_session_details {
- u32 context;
- vl_api_ip4_address_t outside_ip_address;
- u16 outside_port;
- vl_api_ip4_address_t inside_ip_address;
- u16 inside_port;
- u16 protocol;
- vl_api_nat_config_flags_t flags;
- u64 last_heard;
- u64 total_bytes;
- u32 total_pkts;
- vl_api_ip4_address_t ext_host_address;
- u16 ext_host_port;
- vl_api_ip4_address_t ext_host_nat_address;
- u16 ext_host_nat_port;
-};
-
/** \brief NAT44 load-balancing address and port pair
@param addr - IPv4 address of the internal node
@param port - L4 port number of the internal node
@@ -1167,72 +800,195 @@ autoreply define nat44_del_session {
u16 ext_host_port;
};
-/** \brief Enable/disable forwarding for NAT44
- Forward packets which don't match existing translation
- or static mapping instead of dropping them.
+/** \brief Dump NAT44 users
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
- @param enable - true for enable, false for disable
*/
-autoreply define nat44_forwarding_enable_disable {
- option deprecated;
+define nat44_user_dump {
u32 client_index;
u32 context;
- bool enable;
};
-/** \brief Check if forwarding is enabled or disabled
+/** \brief NAT44 users response
+ @param context - sender context, to match reply w/ request
+ @vrf_id - VRF ID
+ @param ip_address - IPv4 address
+ @param nsessions - number of dynamic sessions
+ @param nstaticsessions - number of static sessions
+*/
+define nat44_user_details {
+ u32 context;
+ u32 vrf_id;
+ vl_api_ip4_address_t ip_address;
+ u32 nsessions;
+ u32 nstaticsessions;
+};
+
+/** \brief NAT44 user's sessions
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
+ @param ip_address - IPv4 address of the user to dump
+ @param vrf_id - VRF_ID
*/
-define nat44_forwarding_is_enabled {
+define nat44_user_session_dump {
option deprecated;
+
u32 client_index;
u32 context;
+ vl_api_ip4_address_t ip_address;
+ u32 vrf_id;
};
-/** \brief Response to check if forwarding is enabled or disabled
+/** \brief NAT44 user's sessions response
@param context - sender context, to match reply w/ request
- @param enabled - true if enabled, false if disabled
+ @param outside_ip_address - outside IPv4 address
+ @param outside_port - outside port
+ @param inside_ip_address - inside IPv4 address
+ @param inside_port - inside port
+ @param protocol - protocol
+ @param flags - flag NAT_IS_STATIC if session is static,
+ flag NAT_IS_TWICE_NAT if session is twice-nat,
+ flag NAT_IS_EXT_HOST_VALID if external host address
+ and port are valid
+ @param last_heard - last heard timer
+ @param total_bytes - count of bytes sent through session
+ @param total_pkts - count of pakets sent through session
+ @param ext_host_address - external host IPv4 address
+ @param ext_host_port - external host port
+ @param ext_host_nat_address - post-NAT external host IPv4 address (valid
+ only if twice-nat session)
+ @param ext_host_nat_port - post-NAT external host port (valid only if
+ twice-nat session)
*/
-define nat44_forwarding_is_enabled_reply {
+define nat44_user_session_details {
option deprecated;
+
u32 context;
- bool enabled;
+ vl_api_ip4_address_t outside_ip_address;
+ u16 outside_port;
+ vl_api_ip4_address_t inside_ip_address;
+ u16 inside_port;
+ u16 protocol;
+ vl_api_nat_config_flags_t flags;
+ u64 last_heard;
+ u64 total_bytes;
+ u32 total_pkts;
+ vl_api_ip4_address_t ext_host_address;
+ u16 ext_host_port;
+ vl_api_ip4_address_t ext_host_nat_address;
+ u16 ext_host_nat_port;
};
-/** \brief Set NAT handoff frame queue options
+/** \brief NAT44 user's sessions
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
- @param frame_queue_nelts - number of worker handoff frame queue elements
+ @param ip_address - IPv4 address of the user to dump
+ @param vrf_id - VRF_ID
*/
-autoreply define nat44_ed_set_fq_options {
- option in_progress;
+define nat44_user_session_v2_dump {
+ option deprecated;
+
u32 client_index;
u32 context;
- u32 frame_queue_nelts;
+ vl_api_ip4_address_t ip_address;
+ u32 vrf_id;
};
-/** \brief Show NAT handoff frame queue options
- @param client_index - opaque cookie to identify the sender
+/** \brief NAT44 user's sessions response
@param context - sender context, to match reply w/ request
+ @param outside_ip_address - outside IPv4 address
+ @param outside_port - outside port
+ @param inside_ip_address - inside IPv4 address
+ @param inside_port - inside port
+ @param protocol - protocol
+ @param flags - flag NAT_IS_STATIC if session is static,
+ flag NAT_IS_TWICE_NAT if session is twice-nat,
+ flag NAT_IS_EXT_HOST_VALID if external host address
+ and port are valid
+ @param last_heard - last heard timer
+ @param total_bytes - count of bytes sent through session
+ @param total_pkts - count of pakets sent through session
+ @param ext_host_address - external host IPv4 address
+ @param ext_host_port - external host port
+ @param ext_host_nat_address - post-NAT external host IPv4 address (valid
+ only if twice-nat session)
+ @param ext_host_nat_port - post-NAT external host port (valid only if
+ twice-nat session)
+ @param is_timed_out - true, if session is timed out, and false, if session
+ is active
*/
-define nat44_ed_show_fq_options
-{
- option in_progress;
- u32 client_index;
+define nat44_user_session_v2_details {
+ option deprecated;
+
u32 context;
+ vl_api_ip4_address_t outside_ip_address;
+ u16 outside_port;
+ vl_api_ip4_address_t inside_ip_address;
+ u16 inside_port;
+ u16 protocol;
+ vl_api_nat_config_flags_t flags;
+ u64 last_heard;
+ u64 total_bytes;
+ u32 total_pkts;
+ vl_api_ip4_address_t ext_host_address;
+ u16 ext_host_port;
+ vl_api_ip4_address_t ext_host_nat_address;
+ u16 ext_host_nat_port;
+ bool is_timed_out;
};
-/** \brief Show NAT handoff frame queue options reply
+/** \brief NAT44 user's sessions response
@param context - sender context, to match reply w/ request
- @param retval - return code for the request
- @param frame_queue_nelts - number of worker handoff frame queue elements
+ @param outside_ip_address - outside IPv4 address
+ @param outside_port - outside port
+ @param inside_ip_address - inside IPv4 address
+ @param inside_port - inside port
+ @param protocol - protocol
+ @param flags - flag NAT_IS_STATIC if session is static,
+ flag NAT_IS_TWICE_NAT if session is twice-nat,
+ flag NAT_IS_EXT_HOST_VALID if external host address
+ and port are valid
+ @param last_heard - last heard timer since VPP start
+ @param time_since_last_heard - difference between current vpp time and last_heard value
+ @param total_bytes - count of bytes sent through session
+ @param total_pkts - count of pakets sent through session
+ @param ext_host_address - external host IPv4 address
+ @param ext_host_port - external host port
+ @param ext_host_nat_address - post-NAT external host IPv4 address (valid
+ only if twice-nat session)
+ @param ext_host_nat_port - post-NAT external host port (valid only if
+ twice-nat session)
+ @param is_timed_out - true, if session is timed out, and false, if session
+ is active
*/
-define nat44_ed_show_fq_options_reply
-{
- option in_progress;
+define nat44_user_session_v3_details {
u32 context;
- i32 retval;
- u32 frame_queue_nelts;
+ vl_api_ip4_address_t outside_ip_address;
+ u16 outside_port;
+ vl_api_ip4_address_t inside_ip_address;
+ u16 inside_port;
+ u16 protocol;
+ vl_api_nat_config_flags_t flags;
+ u64 last_heard;
+ u64 time_since_last_heard;
+ u64 total_bytes;
+ u32 total_pkts;
+ vl_api_ip4_address_t ext_host_address;
+ u16 ext_host_port;
+ vl_api_ip4_address_t ext_host_nat_address;
+ u16 ext_host_nat_port;
+ bool is_timed_out;
+};
+
+/** \brief NAT44 user's sessions
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param ip_address - IPv4 address of the user to dump
+ @param vrf_id - VRF_ID
+*/
+define nat44_user_session_v3_dump {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t ip_address;
+ u32 vrf_id;
};
diff --git a/src/plugins/nat/nat44-ed/nat44_ed.c b/src/plugins/nat/nat44-ed/nat44_ed.c
index 4e13907a9d8..08e577747c3 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed.c
@@ -1,6 +1,4 @@
/*
- * snat.c - simple nat plugin
- *
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -28,15 +26,17 @@
#include <vppinfra/bihash_16_8.h>
#include <nat/lib/log.h>
-#include <nat/lib/nat_syslog.h>
#include <nat/lib/nat_inlines.h>
#include <nat/lib/ipfix_logging.h>
+#include <vnet/syslog/syslog.h>
+#include <nat/lib/nat_syslog_constants.h>
+#include <nat/lib/nat_syslog.h>
#include <nat/nat44-ed/nat44_ed.h>
#include <nat/nat44-ed/nat44_ed_affinity.h>
#include <nat/nat44-ed/nat44_ed_inlines.h>
-#include <vpp/stats/stat_segment.h>
+#include <vlib/stats/stats.h>
snat_main_t snat_main;
@@ -59,7 +59,7 @@ static_always_inline void nat_validate_interface_counters (snat_main_t *sm,
if (PREDICT_FALSE (sm->enabled)) \
{ \
nat_log_err ("plugin enabled"); \
- return 1; \
+ return VNET_API_ERROR_FEATURE_ALREADY_ENABLED; \
} \
} \
while (0)
@@ -71,12 +71,11 @@ static_always_inline void nat_validate_interface_counters (snat_main_t *sm,
if (PREDICT_FALSE (!sm->enabled)) \
{ \
nat_log_err ("plugin disabled"); \
- return 1; \
+ return VNET_API_ERROR_FEATURE_ALREADY_DISABLED; \
} \
} \
while (0)
-/* Hook up input features */
VNET_FEATURE_INIT (nat_pre_in2out, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat-pre-in2out",
@@ -90,6 +89,18 @@ VNET_FEATURE_INIT (nat_pre_out2in, static) = {
"ip4-dhcp-client-detect",
"ip4-sv-reassembly-feature"),
};
+VNET_FEATURE_INIT (ip4_nat44_ed_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ed-classify",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat_handoff_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-handoff-classify",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
VNET_FEATURE_INIT (snat_in2out_worker_handoff, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-in2out-worker-handoff",
@@ -101,17 +112,6 @@ VNET_FEATURE_INIT (snat_out2in_worker_handoff, static) = {
.runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
"ip4-dhcp-client-detect"),
};
-VNET_FEATURE_INIT (ip4_snat_in2out, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-in2out",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (ip4_snat_out2in, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-out2in",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
- "ip4-dhcp-client-detect"),
-};
VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-ed-in2out",
@@ -123,32 +123,9 @@ VNET_FEATURE_INIT (ip4_nat44_ed_out2in, static) = {
.runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
"ip4-dhcp-client-detect"),
};
-VNET_FEATURE_INIT (ip4_nat44_ed_classify, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-ed-classify",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (ip4_nat_handoff_classify, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-handoff-classify",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-in2out-fast",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-out2in-fast",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
- "ip4-dhcp-client-detect"),
-};
-
-/* Hook up output features */
-VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = {
+VNET_FEATURE_INIT (nat_pre_in2out_output, static) = {
.arc_name = "ip4-output",
- .node_name = "nat44-in2out-output",
+ .node_name = "nat-pre-in2out-output",
.runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
.runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
};
@@ -158,12 +135,6 @@ VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static) = {
.runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
.runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
};
-VNET_FEATURE_INIT (nat_pre_in2out_output, static) = {
- .arc_name = "ip4-output",
- .node_name = "nat-pre-in2out-output",
- .runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
- .runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
-};
VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = {
.arc_name = "ip4-output",
.node_name = "nat44-ed-in2out-output",
@@ -176,156 +147,375 @@ VLIB_PLUGIN_REGISTER () = {
.description = "Network Address Translation (NAT)",
};
-static void nat44_ed_db_init (u32 translations, u32 translation_buckets);
-
+static void nat44_ed_db_init ();
static void nat44_ed_db_free ();
+static void nat44_ed_worker_db_free (snat_main_per_thread_data_t *tsm);
+
+static int nat44_ed_add_static_mapping_internal (
+ ip4_address_t l_addr, ip4_address_t e_addr, u16 l_port, u16 e_port,
+ ip_protocol_t proto, u32 vrf_id, u32 sw_if_index, u32 flags,
+ ip4_address_t pool_addr, u8 *tag);
+static int nat44_ed_del_static_mapping_internal (ip4_address_t l_addr,
+ ip4_address_t e_addr,
+ u16 l_port, u16 e_port,
+ ip_protocol_t proto,
+ u32 vrf_id, u32 flags);
u32 nat_calc_bihash_buckets (u32 n_elts);
-u8 *
-format_session_kvp (u8 * s, va_list * args)
+static_always_inline int
+nat44_ed_sm_i2o_add (snat_main_t *sm, snat_static_mapping_t *m,
+ ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
{
- clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ ASSERT (!pool_is_free (sm->static_mappings, m));
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_i2o_kv (&kv, addr.as_u32, port, fib_index, proto,
+ m - sm->static_mappings);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 1 /*is_add*/);
+}
- s = format (s, "%U thread-index %llu session-index %llu", format_snat_key,
- v->key, nat_value_get_thread_index (v),
- nat_value_get_session_index (v));
+static_always_inline int
+nat44_ed_sm_i2o_del (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
+{
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_i2o_k (&kv, addr.as_u32, port, fib_index, proto);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 0 /*is_add*/);
+}
- return s;
+static_always_inline int
+nat44_ed_sm_o2i_add (snat_main_t *sm, snat_static_mapping_t *m,
+ ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
+{
+ ASSERT (!pool_is_free (sm->static_mappings, m));
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_o2i_kv (&kv, addr.as_u32, port, fib_index, proto,
+ m - sm->static_mappings);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 1 /*is_add*/);
}
-u8 *
-format_static_mapping_kvp (u8 * s, va_list * args)
+static_always_inline int
+nat44_ed_sm_o2i_del (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
{
- clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_o2i_k (&kv, addr.as_u32, port, fib_index, proto);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 0 /*is_add*/);
+}
+
+void
+nat44_ed_free_session_data (snat_main_t *sm, snat_session_t *s,
+ u32 thread_index, u8 is_ha)
+{
+ per_vrf_sessions_unregister_session (s, thread_index);
+
+ if (nat_ed_ses_i2o_flow_hash_add_del (sm, thread_index, s, 0))
+ nat_elog_warn (sm, "flow hash del failed");
- s = format (s, "%U static-mapping-index %llu",
- format_snat_key, v->key, v->value);
+ if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 0))
+ nat_elog_warn (sm, "flow hash del failed");
- return s;
+ if (na44_ed_is_fwd_bypass_session (s))
+ {
+ return;
+ }
+
+ if (nat44_ed_is_affinity_session (s))
+ nat_affinity_unlock (s->ext_host_addr, s->out2in.addr, s->proto,
+ s->out2in.port);
+
+ if (!is_ha)
+ nat_syslog_nat44_sdel (0, s->in2out.fib_index, &s->in2out.addr,
+ s->in2out.port, &s->ext_host_nat_addr,
+ s->ext_host_nat_port, &s->out2in.addr,
+ s->out2in.port, &s->ext_host_addr, s->ext_host_port,
+ s->proto, nat44_ed_is_twice_nat_session (s));
+
+ if (!is_ha)
+ {
+ /* log NAT event */
+ nat_ipfix_logging_nat44_ses_delete (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32, s->proto,
+ s->in2out.port, s->out2in.port, s->in2out.fib_index);
+ }
}
-u8 *
-format_ed_session_kvp (u8 * s, va_list * args)
+static ip_interface_address_t *
+nat44_ed_get_ip_interface_address (u32 sw_if_index, ip4_address_t addr)
{
- clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
+ snat_main_t *sm = &snat_main;
+
+ ip_lookup_main_t *lm = &sm->ip4_main->lookup_main;
+ ip_interface_address_t *ia;
+ ip4_address_t *ip4a;
+
+ foreach_ip_interface_address (
+ lm, ia, sw_if_index, 1, ({
+ ip4a = ip_interface_address_get_address (lm, ia);
+ nat_log_debug ("sw_if_idx: %u addr: %U ? %U", sw_if_index,
+ format_ip4_address, ip4a, format_ip4_address, &addr);
+ if (ip4a->as_u32 == addr.as_u32)
+ {
+ return ia;
+ }
+ }));
+ return NULL;
+}
- u8 proto;
- u16 r_port, l_port;
- ip4_address_t l_addr, r_addr;
+static int
+nat44_ed_resolve_nat_addr_len (snat_address_t *ap,
+ snat_interface_t *interfaces)
+{
+ ip_interface_address_t *ia;
+ snat_interface_t *i;
u32 fib_index;
- split_ed_kv (v, &l_addr, &r_addr, &proto, &fib_index, &l_port, &r_port);
- s = format (s,
- "local %U:%d remote %U:%d proto %U fib %d thread-index %u "
- "session-index %u",
- format_ip4_address, &l_addr, clib_net_to_host_u16 (l_port),
- format_ip4_address, &r_addr, clib_net_to_host_u16 (r_port),
- format_ip_protocol, proto, fib_index,
- ed_value_get_thread_index (v), ed_value_get_session_index (v));
+ pool_foreach (i, interfaces)
+ {
+ if (!nat44_ed_is_interface_outside (i))
+ {
+ continue;
+ }
- return s;
+ fib_index = ip4_fib_table_get_index_for_sw_if_index (i->sw_if_index);
+ if (fib_index != ap->fib_index)
+ {
+ continue;
+ }
+
+ if ((ia = nat44_ed_get_ip_interface_address (i->sw_if_index, ap->addr)))
+ {
+ ap->addr_len = ia->address_length;
+ ap->sw_if_index = i->sw_if_index;
+ ap->net.as_u32 = ap->addr.as_u32 & ip4_main.fib_masks[ap->addr_len];
+
+ nat_log_debug ("pool addr %U binds to -> sw_if_idx: %u net: %U/%u",
+ format_ip4_address, &ap->addr, ap->sw_if_index,
+ format_ip4_address, &ap->net, ap->addr_len);
+ return 0;
+ }
+ }
+ return 1;
}
-void
-nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index,
- u8 is_ha)
+static void
+nat44_ed_update_outside_if_addresses (snat_address_t *ap)
{
- per_vrf_sessions_unregister_session (s, thread_index);
-
- if (nat_ed_ses_i2o_flow_hash_add_del (sm, thread_index, s, 0))
- nat_elog_warn (sm, "flow hash del failed");
+ snat_main_t *sm = &snat_main;
- if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 0))
- nat_elog_warn (sm, "flow hash del failed");
+ if (!nat44_ed_resolve_nat_addr_len (ap, sm->interfaces))
+ {
+ return;
+ }
- if (is_fwd_bypass_session (s))
+ if (!nat44_ed_resolve_nat_addr_len (ap, sm->output_feature_interfaces))
{
return;
}
+}
+
+static void
+nat44_ed_bind_if_addr_to_nat_addr (u32 sw_if_index)
+{
+ snat_main_t *sm = &snat_main;
+ ip_interface_address_t *ia;
+ snat_address_t *ap;
+
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ vec_foreach (ap, sm->addresses)
+ {
+ if (fib_index != ap->fib_index)
+ {
+ continue;
+ }
+
+ if ((ia = nat44_ed_get_ip_interface_address (sw_if_index, ap->addr)))
+ {
+ ap->addr_len = ia->address_length;
+ ap->sw_if_index = sw_if_index;
+ ap->net.as_u32 = ap->addr.as_u32 & ip4_main.fib_masks[ap->addr_len];
+
+ nat_log_debug ("pool addr %U binds to -> sw_if_idx: %u net: %U/%u",
+ format_ip4_address, &ap->addr, ap->sw_if_index,
+ format_ip4_address, &ap->net, ap->addr_len);
+ return;
+ }
+ }
+}
- if (is_affinity_sessions (s))
- nat_affinity_unlock (s->ext_host_addr, s->out2in.addr,
- s->nat_proto, s->out2in.port);
+static_always_inline snat_fib_entry_reg_t *
+nat44_ed_get_fib_entry_reg (ip4_address_t addr, u32 sw_if_index, int *out_idx)
+{
+ snat_main_t *sm = &snat_main;
+ snat_fib_entry_reg_t *fe;
+ int i;
- if (!is_ha)
- nat_syslog_nat44_sdel (
- 0, s->in2out.fib_index, &s->in2out.addr, s->in2out.port,
- &s->ext_host_nat_addr, s->ext_host_nat_port, &s->out2in.addr,
- s->out2in.port, &s->ext_host_addr, s->ext_host_port, s->nat_proto,
- is_twice_nat_session (s));
+ for (i = 0; i < vec_len (sm->fib_entry_reg); i++)
+ {
+ fe = sm->fib_entry_reg + i;
+ if ((addr.as_u32 == fe->addr.as_u32) && (sw_if_index == fe->sw_if_index))
+ {
+ if (out_idx)
+ {
+ *out_idx = i;
+ }
+ return fe;
+ }
+ }
+ return NULL;
+}
- if (snat_is_unk_proto_session (s))
- return;
+static void
+nat44_ed_add_fib_entry_reg (ip4_address_t addr, u32 sw_if_index)
+{
+ // Add the external NAT address to the FIB as receive entries. This ensures
+ // that VPP will reply to ARP for this address and we don't need to enable
+ // proxy ARP on the outside interface.
+ snat_main_t *sm = &snat_main;
+ snat_fib_entry_reg_t *fe;
- if (!is_ha)
+ if (!(fe = nat44_ed_get_fib_entry_reg (addr, sw_if_index, 0)))
{
- /* log NAT event */
- nat_ipfix_logging_nat44_ses_delete (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
+ fib_prefix_t prefix = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr.as_u32,
+ },
+ };
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ fib_table_entry_update_one_path (fib_index, &prefix, sm->fib_src_low,
+ (FIB_ENTRY_FLAG_CONNECTED |
+ FIB_ENTRY_FLAG_LOCAL |
+ FIB_ENTRY_FLAG_EXCLUSIVE),
+ DPO_PROTO_IP4, NULL, sw_if_index, ~0, 1,
+ NULL, FIB_ROUTE_PATH_FLAG_NONE);
+
+ vec_add2 (sm->fib_entry_reg, fe, 1);
+ clib_memset (fe, 0, sizeof (*fe));
+ fe->addr.as_u32 = addr.as_u32;
+ fe->sw_if_index = sw_if_index;
+ }
+ fe->count++;
+}
+
+static void
+nat44_ed_del_fib_entry_reg (ip4_address_t addr, u32 sw_if_index)
+{
+ snat_main_t *sm = &snat_main;
+ snat_fib_entry_reg_t *fe;
+ int i;
+
+ if ((fe = nat44_ed_get_fib_entry_reg (addr, sw_if_index, &i)))
+ {
+ fe->count--;
+ if (0 == fe->count)
+ {
+ fib_prefix_t prefix = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr.as_u32,
+ },
+ };
+ u32 fib_index =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ fib_table_entry_delete (fib_index, &prefix, sm->fib_src_low);
+ vec_del1 (sm->fib_entry_reg, i);
+ }
}
+}
- /* Twice NAT address and port for external host */
- if (is_twice_nat_session (s))
+static void
+nat44_ed_add_del_interface_fib_reg_entries (ip4_address_t addr, u8 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i;
+
+ pool_foreach (i, sm->interfaces)
+ {
+ if (nat44_ed_is_interface_outside (i))
+ {
+ if (is_add)
+ {
+ nat44_ed_add_fib_entry_reg (addr, i->sw_if_index);
+ }
+ else
+ {
+ nat44_ed_del_fib_entry_reg (addr, i->sw_if_index);
+ }
+ }
+ }
+ pool_foreach (i, sm->output_feature_interfaces)
{
- snat_free_outside_address_and_port (sm->twice_nat_addresses,
- thread_index,
- &s->ext_host_nat_addr,
- s->ext_host_nat_port, s->nat_proto);
+ if (nat44_ed_is_interface_outside (i))
+ {
+ if (is_add)
+ {
+ nat44_ed_add_fib_entry_reg (addr, i->sw_if_index);
+ }
+ else
+ {
+ nat44_ed_del_fib_entry_reg (addr, i->sw_if_index);
+ }
+ }
}
+}
- if (snat_is_session_static (s))
- return;
+static_always_inline void
+nat44_ed_add_del_nat_addr_fib_reg_entries (u32 sw_if_index, u8 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *ap;
- snat_free_outside_address_and_port (sm->addresses, thread_index,
- &s->out2in.addr, s->out2in.port,
- s->nat_proto);
+ vec_foreach (ap, sm->addresses)
+ {
+ if (is_add)
+ {
+ nat44_ed_add_fib_entry_reg (ap->addr, sw_if_index);
+ }
+ else
+ {
+ nat44_ed_del_fib_entry_reg (ap->addr, sw_if_index);
+ }
+ }
}
-void
-snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
- int is_add)
+static_always_inline void
+nat44_ed_add_del_sm_fib_reg_entries (u32 sw_if_index, u8 is_add)
{
snat_main_t *sm = &snat_main;
- fib_prefix_t prefix = {
- .fp_len = p_len,
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_addr = {
- .ip4.as_u32 = addr->as_u32,
- },
- };
- u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ snat_static_mapping_t *m;
- if (is_add)
- fib_table_entry_update_one_path (fib_index,
- &prefix,
- sm->fib_src_low,
- (FIB_ENTRY_FLAG_CONNECTED |
- FIB_ENTRY_FLAG_LOCAL |
- FIB_ENTRY_FLAG_EXCLUSIVE),
- DPO_PROTO_IP4,
- NULL,
- sw_if_index,
- ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
- else
- fib_table_entry_delete (fib_index, &prefix, sm->fib_src_low);
+ pool_foreach (m, sm->static_mappings)
+ {
+ if (is_add)
+ {
+ nat44_ed_add_fib_entry_reg (m->external_addr, sw_if_index);
+ }
+ else
+ {
+ nat44_ed_del_fib_entry_reg (m->external_addr, sw_if_index);
+ }
+ }
}
int
-snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id,
- u8 twice_nat)
+nat44_ed_add_address (ip4_address_t *addr, u32 vrf_id, u8 twice_nat)
{
- snat_address_t *ap;
- snat_interface_t *i;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
+ snat_main_t *sm = &snat_main;
+ snat_address_t *ap, *addresses;
+
+ addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
- /* Check if address already exists */
- vec_foreach (ap, twice_nat ? sm->twice_nat_addresses : sm->addresses)
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ // check if address already exists
+ vec_foreach (ap, addresses)
{
if (ap->addr.as_u32 == addr->as_u32)
{
@@ -335,62 +525,231 @@ snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id,
}
if (twice_nat)
- vec_add2 (sm->twice_nat_addresses, ap, 1);
+ {
+ vec_add2 (sm->twice_nat_addresses, ap, 1);
+ }
else
- vec_add2 (sm->addresses, ap, 1);
+ {
+ vec_add2 (sm->addresses, ap, 1);
+ }
+ ap->addr_len = ~0;
+ ap->fib_index = ~0;
ap->addr = *addr;
+
if (vrf_id != ~0)
- ap->fib_index =
- fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- sm->fib_src_low);
+ {
+ ap->fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+ }
+
+ if (!twice_nat)
+ {
+ // if we don't have enabled interface we don't add address
+ // to fib
+ nat44_ed_add_del_interface_fib_reg_entries (*addr, 1);
+ nat44_ed_update_outside_if_addresses (ap);
+ }
+ return 0;
+}
+
+int
+nat44_ed_del_address (ip4_address_t addr, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a = 0, *addresses;
+ snat_session_t *ses;
+ u32 *ses_to_be_removed = 0, *ses_index;
+ snat_main_per_thread_data_t *tsm;
+ int j;
+
+ addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
+
+ for (j = 0; j < vec_len (addresses); j++)
+ {
+ if (addresses[j].addr.as_u32 == addr.as_u32)
+ {
+ a = addresses + j;
+ break;
+ }
+ }
+ if (!a)
+ {
+ nat_log_err ("no such address");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ // delete dynamic sessions only
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ pool_foreach (ses, tsm->sessions)
+ {
+ if (ses->flags & SNAT_SESSION_FLAG_STATIC_MAPPING)
+ {
+ continue;
+ }
+ if (ses->out2in.addr.as_u32 == addr.as_u32)
+ {
+ nat44_ed_free_session_data (sm, ses, tsm - sm->per_thread_data,
+ 0);
+ vec_add1 (ses_to_be_removed, ses - tsm->sessions);
+ }
+ }
+ vec_foreach (ses_index, ses_to_be_removed)
+ {
+ ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
+ nat_ed_session_delete (sm, ses, tsm - sm->per_thread_data, 1);
+ }
+ vec_free (ses_to_be_removed);
+ }
+
+ if (!twice_nat)
+ {
+ nat44_ed_add_del_interface_fib_reg_entries (addr, 0);
+ }
+
+ if (a->fib_index != ~0)
+ {
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ }
+
+ if (!twice_nat)
+ {
+ vec_del1 (sm->addresses, j);
+ }
else
- ap->fib_index = ~0;
+ {
+ vec_del1 (sm->twice_nat_addresses, j);
+ }
- #define _(N, i, n, s) \
- clib_memset(ap->busy_##n##_port_refcounts, 0, sizeof(ap->busy_##n##_port_refcounts));\
- ap->busy_##n##_ports = 0; \
- ap->busy_##n##_ports_per_thread = 0;\
- vec_validate_init_empty (ap->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
- foreach_nat_protocol
- #undef _
+ return 0;
+}
- if (twice_nat)
- return 0;
+vrf_table_t *
+nat44_ed_get_vrf_table (u32 table_vrf_id)
+{
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t;
- /* Add external address to FIB */
- pool_foreach (i, sm->interfaces)
- {
- if (nat_interface_is_inside (i))
- continue;
+ pool_foreach (t, sm->vrf_tables)
+ {
+ if (table_vrf_id == t->table_vrf_id)
+ {
+ return t;
+ }
+ }
+ return NULL;
+}
- snat_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
- break;
- }
- pool_foreach (i, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (i))
- continue;
+vrf_route_t *
+nat44_ed_get_vrf_route (vrf_table_t *t, u32 vrf_id)
+{
+ vrf_route_t *r;
- snat_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
- break;
- }
+ pool_foreach (r, t->routes)
+ {
+ if (vrf_id == r->vrf_id)
+ {
+ return r;
+ }
+ }
+ return NULL;
+}
+
+int
+nat44_ed_add_del_vrf_table (u32 table_vrf_id, bool is_add)
+{
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t;
+ vrf_route_t *r;
+
+ t = nat44_ed_get_vrf_table (table_vrf_id);
+ if (t)
+ {
+ if (is_add)
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ pool_foreach (r, t->routes)
+ {
+ fib_table_unlock (r->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ }
+ fib_table_unlock (t->table_fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+
+ pool_free (t->routes);
+ pool_put (sm->vrf_tables, t);
+ }
+ else
+ {
+ if (!is_add)
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+ pool_get (sm->vrf_tables, t);
+ clib_memset (t, 0, sizeof (*t));
+ t->table_vrf_id = table_vrf_id;
+ t->table_fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, table_vrf_id, sm->fib_src_low);
+ }
return 0;
}
-static int
-is_snat_address_used_in_static_mapping (snat_main_t * sm, ip4_address_t addr)
+void
+nat44_ed_del_vrf_tables ()
{
- snat_static_mapping_t *m;
- pool_foreach (m, sm->static_mappings)
- {
- if (is_sm_addr_only (m->flags) || is_sm_out2in_only (m->flags) ||
- is_sm_identity_nat (m->flags))
- continue;
- if (m->external_addr.as_u32 == addr.as_u32)
- return 1;
- }
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t;
+ vrf_route_t *r;
+
+ pool_foreach (t, sm->vrf_tables)
+ {
+ pool_foreach (r, t->routes)
+ {
+ fib_table_unlock (r->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ }
+ fib_table_unlock (t->table_fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ pool_free (t->routes);
+ }
+ pool_free (sm->vrf_tables);
+}
+
+int
+nat44_ed_add_del_vrf_route (u32 table_vrf_id, u32 vrf_id, bool is_add)
+{
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t;
+ vrf_route_t *r;
+
+ t = nat44_ed_get_vrf_table (table_vrf_id);
+ if (!t)
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ r = nat44_ed_get_vrf_route (t, vrf_id);
+ if (r)
+ {
+ if (is_add)
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ fib_table_unlock (r->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ pool_put (t->routes, r);
+ }
+ else
+ {
+ if (!is_add)
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+ pool_get (t->routes, r);
+ clib_memset (r, 0, sizeof (*r));
+ r->vrf_id = vrf_id;
+ r->fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+ }
+
return 0;
}
@@ -401,9 +760,9 @@ get_thread_idx_by_port (u16 e_port)
u32 thread_idx = sm->num_workers;
if (sm->num_workers > 1)
{
- thread_idx =
- sm->first_worker_index +
- sm->workers[(e_port - 1024) / sm->port_per_thread];
+ thread_idx = sm->first_worker_index +
+ sm->workers[(e_port - ED_USER_PORT_OFFSET) /
+ sm->port_per_thread % _vec_len (sm->workers)];
}
return thread_idx;
}
@@ -427,18 +786,17 @@ nat_ed_static_mapping_del_sessions (snat_main_t * sm,
}
if (!addr_only)
{
- if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
- s->out2in.port != e_port ||
- s->in2out.port != l_port ||
- s->nat_proto != protocol)
- continue;
+ if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
+ s->out2in.port != e_port || s->in2out.port != l_port ||
+ s->proto != protocol)
+ continue;
}
- if (is_lb_session (s))
+ if (nat44_ed_is_lb_session (s))
continue;
- if (!snat_is_session_static (s))
+ if (!nat44_ed_is_session_static (s))
continue;
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
vec_add1 (indexes_to_free, s - tsm->sessions);
if (!addr_only)
break;
@@ -452,118 +810,50 @@ nat_ed_static_mapping_del_sessions (snat_main_t * sm,
vec_free (indexes_to_free);
}
-int
-nat44_ed_reserve_port (ip4_address_t addr, u16 port, nat_protocol_t proto)
+static_always_inline snat_static_mapping_t *
+nat44_ed_sm_lookup (snat_main_t *sm, clib_bihash_kv_16_8_t *kv)
{
- u32 ti = get_thread_idx_by_port (port);
- snat_main_t *sm = &snat_main;
- snat_address_t *a = 0;
- int i;
-
- for (i = 0; i < vec_len (sm->addresses); i++)
+ clib_bihash_kv_16_8_t v;
+ int rc = clib_bihash_search_16_8 (&sm->flow_hash, kv, &v);
+ if (!rc)
{
- a = sm->addresses + i;
-
- if (a->addr.as_u32 != addr.as_u32)
- continue;
-
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_port_refcounts[port]) \
- goto done; \
- ++a->busy_##n##_port_refcounts[port]; \
- if (port > 1024) \
- { \
- a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[ti]++; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- goto done;
- }
-
- return 0;
+ ASSERT (0 == ed_value_get_thread_index (&v));
+ return pool_elt_at_index (sm->static_mappings,
+ ed_value_get_session_index (&v));
}
-
-done:
- return 1;
+ return NULL;
}
-int
-nat44_ed_free_port (ip4_address_t addr, u16 port, nat_protocol_t proto)
+snat_static_mapping_t *
+nat44_ed_sm_o2i_lookup (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
{
- u32 ti = get_thread_idx_by_port (port);
- snat_main_t *sm = &snat_main;
- snat_address_t *a = 0;
- int i;
-
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- a = sm->addresses + i;
-
- if (a->addr.as_u32 != addr.as_u32)
- continue;
-
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- --a->busy_##n##_port_refcounts[port]; \
- if (port > 1024) \
- { \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[ti]--; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- goto done;
- }
-
- return 0;
- }
-
-done:
- return 1;
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_o2i_k (&kv, addr.as_u32, port, fib_index, proto);
+ return nat44_ed_sm_lookup (sm, &kv);
}
-void
-nat44_ed_add_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
- nat_protocol_t proto, u32 vrf_id, u32 sw_if_index,
- u32 flags, ip4_address_t pool_addr, u8 *tag)
+snat_static_mapping_t *
+nat44_ed_sm_i2o_lookup (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
{
- snat_static_map_resolve_t *rp;
- snat_main_t *sm = &snat_main;
-
- vec_add2 (sm->to_resolve, rp, 1);
- rp->l_addr.as_u32 = l_addr.as_u32;
- rp->l_port = l_port;
- rp->e_port = e_port;
- rp->sw_if_index = sw_if_index;
- rp->vrf_id = vrf_id;
- rp->proto = proto;
- rp->flags = flags;
- rp->pool_addr = pool_addr;
- rp->tag = vec_dup (tag);
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_i2o_k (&kv, addr.as_u32, port, fib_index, proto);
+ return nat44_ed_sm_lookup (sm, &kv);
}
-int
+static snat_static_mapping_resolve_t *
nat44_ed_get_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
- nat_protocol_t proto, u32 vrf_id, u32 sw_if_index,
- u32 flags, int *out)
+ ip_protocol_t proto, u32 vrf_id, u32 sw_if_index,
+ u32 flags, int *out_idx)
{
- snat_static_map_resolve_t *rp;
+ snat_static_mapping_resolve_t *rp;
snat_main_t *sm = &snat_main;
int i;
- for (i = 0; i < vec_len (sm->to_resolve); i++)
+ for (i = 0; i < vec_len (sm->sm_to_resolve); i++)
{
- rp = sm->to_resolve + i;
+ rp = sm->sm_to_resolve + i;
if (rp->sw_if_index == sw_if_index && rp->vrf_id == vrf_id)
{
@@ -592,27 +882,27 @@ nat44_ed_get_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
{
continue;
}
- if (out)
+ if (out_idx)
{
- *out = i;
+ *out_idx = i;
}
- return 0;
+ return rp;
}
}
- return 1;
+ return NULL;
}
-int
+static int
nat44_ed_del_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
- nat_protocol_t proto, u32 vrf_id, u32 sw_if_index,
+ ip_protocol_t proto, u32 vrf_id, u32 sw_if_index,
u32 flags)
{
snat_main_t *sm = &snat_main;
int i;
- if (!nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
- sw_if_index, flags, &i))
+ if (nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags, &i))
{
- vec_del1 (sm->to_resolve, i);
+ vec_del1 (sm->sm_to_resolve, i);
return 0;
}
return 1;
@@ -639,45 +929,98 @@ nat44_ed_validate_sm_input (u32 flags)
int
nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
- u16 l_port, u16 e_port, nat_protocol_t proto,
+ u16 l_port, u16 e_port, ip_protocol_t proto,
u32 vrf_id, u32 sw_if_index, u32 flags,
ip4_address_t pool_addr, u8 *tag)
{
+ snat_static_mapping_resolve_t *rp;
snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
- snat_interface_t *interface;
- nat44_lb_addr_port_t *local;
- snat_static_mapping_t *m;
- u32 fib_index = ~0;
int rv;
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
rv = nat44_ed_validate_sm_input (flags);
if (rv != 0)
{
return rv;
}
- if (is_sm_addr_only (flags))
+ // interface bound mapping
+ if (is_sm_switch_address (flags))
{
- e_port = l_port = proto = 0;
+ if (nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags, 0))
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
+ vec_add2 (sm->sm_to_resolve, rp, 1);
+ rp->l_addr.as_u32 = l_addr.as_u32;
+ rp->l_port = l_port;
+ rp->e_port = e_port;
+ rp->sw_if_index = sw_if_index;
+ rp->vrf_id = vrf_id;
+ rp->proto = proto;
+ rp->flags = flags;
+ rp->pool_addr = pool_addr;
+ rp->tag = vec_dup (tag);
+ rp->is_resolved = 0;
+
+ ip4_address_t *first_int_addr =
+ ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
+ if (!first_int_addr)
+ {
+ return 0;
+ }
+
+ e_addr.as_u32 = first_int_addr->as_u32;
+ rp->is_resolved = 1;
}
- if (is_sm_switch_address (flags))
+ rv = nat44_ed_add_static_mapping_internal (l_addr, e_addr, l_port, e_port,
+ proto, vrf_id, sw_if_index, flags,
+ pool_addr, tag);
+ if ((0 != rv) && is_sm_switch_address (flags))
{
- // this mapping is interface bound
- ip4_address_t *first_int_addr;
+ nat44_ed_del_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags);
+ }
+
+ return rv;
+}
+
+int
+nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 sw_if_index, u32 flags)
+{
+ snat_main_t *sm = &snat_main;
+ int rv;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ rv = nat44_ed_validate_sm_input (flags);
+ if (rv != 0)
+ {
+ return rv;
+ }
- // check if this record isn't registered for resolve
- if (!nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
- sw_if_index, flags, 0))
+ // interface bound mapping
+ if (is_sm_switch_address (flags))
+ {
+ if (nat44_ed_del_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags))
{
- return VNET_API_ERROR_VALUE_EXIST;
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
}
- // register record for resolve
- nat44_ed_add_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
- sw_if_index, flags, pool_addr, tag);
- first_int_addr =
+ ip4_address_t *first_int_addr =
ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
if (!first_int_addr)
{
@@ -688,25 +1031,44 @@ nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
e_addr.as_u32 = first_int_addr->as_u32;
}
+ return nat44_ed_del_static_mapping_internal (l_addr, e_addr, l_port, e_port,
+ proto, vrf_id, flags);
+}
+
+static int
+nat44_ed_add_static_mapping_internal (ip4_address_t l_addr,
+ ip4_address_t e_addr, u16 l_port,
+ u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 sw_if_index, u32 flags,
+ ip4_address_t pool_addr, u8 *tag)
+{
+ snat_main_t *sm = &snat_main;
+ nat44_lb_addr_port_t *local;
+ snat_static_mapping_t *m;
+ u32 fib_index = ~0;
+
+ if (is_sm_addr_only (flags))
+ {
+ e_port = l_port = proto = 0;
+ }
+
if (is_sm_identity_nat (flags))
{
l_port = e_port;
l_addr.as_u32 = e_addr.as_u32;
}
- // fib index 0
- init_nat_k (&kv, e_addr, e_port, 0, proto);
-
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ // case:
+ // adding local identity nat record for different vrf table
+
if (!is_sm_identity_nat (m->flags))
{
return VNET_API_ERROR_VALUE_EXIST;
}
- // case:
- // adding local identity nat record for different vrf table
pool_foreach (local, m->locals)
{
if (local->vrf_id == vrf_id)
@@ -721,9 +1083,8 @@ nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
local->fib_index = fib_table_find_or_create_and_lock (
FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
- init_nat_kv (&kv, m->local_addr, m->local_port, local->fib_index,
- m->proto, 0, m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ nat44_ed_sm_i2o_add (sm, m, m->local_addr, m->local_port,
+ local->fib_index, m->proto);
return 0;
}
@@ -745,28 +1106,12 @@ nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
// identity nat supports multiple records in local mapping
if (!(is_sm_out2in_only (flags) || is_sm_identity_nat (flags)))
{
- init_nat_k (&kv, l_addr, l_port, fib_index, proto);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ if (nat44_ed_sm_i2o_lookup (sm, l_addr, l_port, fib_index, proto))
{
return VNET_API_ERROR_VALUE_EXIST;
}
}
- if (!(is_sm_out2in_only (flags) || is_sm_addr_only (flags) ||
- sm->static_mapping_only))
- {
- if (nat44_ed_reserve_port (e_addr, e_port, proto))
- {
- // remove resolve record
- if (is_sm_switch_address (flags) && !is_sm_identity_nat (flags))
- {
- nat44_ed_del_resolve_record (l_addr, l_port, e_port, proto,
- vrf_id, sw_if_index, flags);
- }
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
- }
-
pool_get (sm->static_mappings, m);
clib_memset (m, 0, sizeof (*m));
@@ -774,13 +1119,9 @@ nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
m->local_addr = l_addr;
m->external_addr = e_addr;
+ m->pool_addr = pool_addr;
m->tag = vec_dup (tag);
- if (is_sm_exact_address (flags) && is_sm_twice_nat (flags))
- {
- m->pool_addr = pool_addr;
- }
-
if (!is_sm_addr_only (flags))
{
m->local_port = l_port;
@@ -803,14 +1144,11 @@ nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
if (!is_sm_out2in_only (flags))
{
- init_nat_kv (&kv, m->local_addr, m->local_port, fib_index, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ nat44_ed_sm_i2o_add (sm, m, m->local_addr, m->local_port, fib_index,
+ m->proto);
}
- init_nat_kv (&kv, m->external_addr, m->external_port, 0, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1);
+ nat44_ed_sm_o2i_add (sm, m, m->external_addr, m->external_port, 0, m->proto);
if (sm->num_workers > 1)
{
@@ -824,79 +1162,29 @@ nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
vec_add1 (m->workers, worker_index);
}
- if (is_sm_identity_nat (flags) || !is_sm_addr_only (flags))
- return 0;
-
- pool_foreach (interface, sm->interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
-
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 1);
- break;
- }
-
- pool_foreach (interface, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
-
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 1);
- break;
- }
+ nat44_ed_add_del_interface_fib_reg_entries (e_addr, 1);
return 0;
}
-int
-nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
- u16 l_port, u16 e_port, nat_protocol_t proto,
- u32 vrf_id, u32 sw_if_index, u32 flags)
+static int
+nat44_ed_del_static_mapping_internal (ip4_address_t l_addr,
+ ip4_address_t e_addr, u16 l_port,
+ u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 flags)
{
snat_main_per_thread_data_t *tsm;
snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
- snat_interface_t *interface;
nat44_lb_addr_port_t *local;
snat_static_mapping_t *m;
u32 fib_index = ~0;
- int rv;
-
- rv = nat44_ed_validate_sm_input (flags);
- if (rv != 0)
- {
- return rv;
- }
if (is_sm_addr_only (flags))
{
e_port = l_port = proto = 0;
}
- if (is_sm_switch_address (flags))
- {
- // this mapping is interface bound
- ip4_address_t *first_int_addr;
-
- // delete record registered for resolve
- if (nat44_ed_del_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
- sw_if_index, flags))
- {
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
-
- first_int_addr =
- ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
- if (!first_int_addr)
- {
- // dhcp resolution required
- return 0;
- }
-
- e_addr.as_u32 = first_int_addr->as_u32;
- }
-
if (is_sm_identity_nat (flags))
{
l_port = e_port;
@@ -904,24 +1192,17 @@ nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
}
// fib index 0
- init_nat_k (&kv, e_addr, e_port, 0, proto);
-
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
+ if (!m)
{
- if (is_sm_switch_address (flags))
- {
- return 0;
- }
return VNET_API_ERROR_NO_SUCH_ENTRY;
}
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
if (is_sm_identity_nat (flags))
{
- u8 failure = 1;
+ u8 found = 0;
- if (!is_sm_switch_address (flags))
+ if (vrf_id == ~0)
{
vrf_id = sm->inside_vrf_id;
}
@@ -933,11 +1214,11 @@ nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
local = pool_elt_at_index (m->locals, local - m->locals);
fib_index = local->fib_index;
pool_put (m->locals, local);
- failure = 0;
+ found = 1;
}
}
- if (failure)
+ if (!found)
{
return VNET_API_ERROR_NO_SUCH_ENTRY;
}
@@ -947,66 +1228,38 @@ nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
fib_index = m->fib_index;
}
- if (!(is_sm_out2in_only (flags) || is_sm_addr_only (flags) ||
- sm->static_mapping_only))
+ if (!is_sm_out2in_only (flags))
{
- if (nat44_ed_free_port (e_addr, e_port, proto))
- {
- return VNET_API_ERROR_INVALID_VALUE;
- }
+ nat44_ed_sm_i2o_del (sm, l_addr, l_port, fib_index, proto);
}
- if (!is_sm_out2in_only (flags))
+ // delete sessions for static mapping
+ if (sm->num_workers > 1)
{
- init_nat_k (&kv, l_addr, l_port, fib_index, proto);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0);
+ tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
}
-
- if (!sm->static_mapping_only || sm->static_mapping_connection_tracking)
+ else
{
- // delete sessions for static mapping
- if (sm->num_workers > 1)
- tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
-
- nat_ed_static_mapping_del_sessions (
- sm, tsm, m->local_addr, m->local_port, m->proto, fib_index,
- is_sm_addr_only (flags), e_addr, e_port);
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
}
- fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
-
- if (pool_elts (m->locals))
- return 0;
-
- // fib_index 0
- init_nat_k (&kv, e_addr, e_port, 0, proto);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0);
-
- vec_free (m->tag);
- vec_free (m->workers);
- pool_put (sm->static_mappings, m);
+ nat_ed_static_mapping_del_sessions (sm, tsm, m->local_addr, m->local_port,
+ m->proto, fib_index,
+ is_sm_addr_only (flags), e_addr, e_port);
- if (is_sm_identity_nat (flags) || !is_sm_addr_only (flags))
- return 0;
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
- pool_foreach (interface, sm->interfaces)
+ if (!pool_elts (m->locals))
{
- if (nat_interface_is_inside (interface))
- continue;
+ // this is last record remove all required stuff
+ // fib_index 0
+ nat44_ed_sm_o2i_del (sm, e_addr, e_port, 0, proto);
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 0);
- break;
- }
-
- pool_foreach (interface, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
+ vec_free (m->tag);
+ vec_free (m->workers);
+ pool_put (sm->static_mappings, m);
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 0);
- break;
+ nat44_ed_add_del_interface_fib_reg_entries (e_addr, 0);
}
return 0;
@@ -1014,66 +1267,59 @@ nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
int
nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
- nat_protocol_t proto,
+ ip_protocol_t proto,
nat44_lb_addr_port_t *locals, u32 flags,
u8 *tag, u32 affinity)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
snat_address_t *a = 0;
nat44_lb_addr_port_t *local;
uword *bitmap = 0;
+ int rc = 0;
int i;
- init_nat_k (&kv, e_addr, e_port, 0, proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
if (m)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
if (vec_len (locals) < 2)
- return VNET_API_ERROR_INVALID_VALUE;
+ {
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
- /* Find external address in allocated addresses and reserve port for
- address and port pair mapping when dynamic translations enabled */
- if (!(sm->static_mapping_only || is_sm_out2in_only (flags)))
+ if (!is_sm_out2in_only (flags))
{
+ /* Find external address in allocated addresses and reserve port for
+ address and port pair mapping when dynamic translations enabled */
for (i = 0; i < vec_len (sm->addresses); i++)
{
if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
{
- a = sm->addresses + i;
/* External port must be unused */
- switch (proto)
+ a = sm->addresses + i;
+ if (nat44_ed_sm_o2i_lookup (sm, a->addr, e_port, 0, proto))
{
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_port_refcounts[e_port]) \
- return VNET_API_ERROR_INVALID_VALUE; \
- ++a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port (e_port)]++; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
+ return VNET_API_ERROR_VALUE_EXIST;
}
break;
}
}
- /* External address must be allocated */
+ // external address must be allocated
if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
}
pool_get (sm->static_mappings, m);
@@ -1093,11 +1339,10 @@ nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
else
m->affinity_per_service_list_head_index = ~0;
- init_nat_kv (&kv, m->external_addr, m->external_port, 0, m->proto, 0,
- m - sm->static_mappings);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1))
+ if (nat44_ed_sm_o2i_add (sm, m, m->external_addr, m->external_port, 0,
+ m->proto))
{
- nat_elog_err (sm, "static_mapping_by_external key add failed");
+ nat_log_err ("sm o2i key add failed");
return VNET_API_ERROR_UNSPECIFIED;
}
@@ -1107,10 +1352,17 @@ nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
FIB_PROTOCOL_IP4, locals[i].vrf_id, sm->fib_src_low);
if (!is_sm_out2in_only (flags))
{
- init_nat_kv (&kv, locals[i].addr, locals[i].port,
- locals[i].fib_index, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ if (nat44_ed_sm_i2o_add (sm, m, locals[i].addr, locals[i].port, 0,
+ proto))
+ {
+ nat_log_err ("sm i2o key add failed");
+ rc = VNET_API_ERROR_UNSPECIFIED;
+ // here we continue with add operation so that it can be safely
+ // reversed in delete path - otherwise we'd have to track what
+ // we've done and deal with partial cleanups and since bihash
+ // adds are (extremely improbable) the only points of failure,
+ // it's easier to just do it this way
+ }
}
locals[i].prefix = (i == 0) ?
locals[i].probability :
@@ -1137,68 +1389,36 @@ nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
}
}
- return 0;
+ return rc;
}
int
nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
- nat_protocol_t proto, u32 flags)
+ ip_protocol_t proto, u32 flags)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
- snat_address_t *a = 0;
nat44_lb_addr_port_t *local;
snat_main_per_thread_data_t *tsm;
snat_session_t *s;
- int i;
- init_nat_k (&kv, e_addr, e_port, 0, proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
if (!m)
return VNET_API_ERROR_NO_SUCH_ENTRY;
if (!is_sm_lb (m->flags))
return VNET_API_ERROR_INVALID_VALUE;
- /* Free external address port */
- if (!(sm->static_mapping_only || is_sm_out2in_only (flags)))
- {
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- --a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port (e_port)]--; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
- }
- }
-
- init_nat_k (&kv, m->external_addr, m->external_port, 0, m->proto);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0))
+ if (nat44_ed_sm_o2i_del (sm, m->external_addr, m->external_port, 0,
+ m->proto))
{
- nat_elog_err (sm, "static_mapping_by_external key del failed");
+ nat_log_err ("sm o2i key del failed");
return VNET_API_ERROR_UNSPECIFIED;
}
@@ -1207,12 +1427,11 @@ nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
if (!is_sm_out2in_only (flags))
{
- init_nat_k (&kv, local->addr, local->port, local->fib_index,
- m->proto);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0))
+ if (nat44_ed_sm_i2o_del (sm, local->addr, local->port,
+ local->fib_index, m->proto))
{
- nat_elog_err (sm, "static_mapping_by_local key del failed");
- return VNET_API_ERROR_UNSPECIFIED;
+ nat_log_err ("sm i2o key del failed");
+ // For the same reasons as above
}
}
@@ -1231,14 +1450,14 @@ nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
/* Delete sessions */
pool_foreach (s, tsm->sessions)
{
- if (!(is_lb_session (s)))
+ if (!(nat44_ed_is_lb_session (s)))
continue;
if ((s->in2out.addr.as_u32 != local->addr.as_u32) ||
s->in2out.port != local->port)
continue;
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
}
}
@@ -1259,12 +1478,11 @@ nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
int
nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
ip4_address_t l_addr, u16 l_port,
- nat_protocol_t proto, u32 vrf_id,
+ ip_protocol_t proto, u32 vrf_id,
u8 probability, u8 is_add)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m = 0;
- clib_bihash_kv_8_8_t kv, value;
nat44_lb_addr_port_t *local, *prev_local, *match_local = 0;
snat_main_per_thread_data_t *tsm;
snat_session_t *s;
@@ -1272,15 +1490,22 @@ nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
uword *bitmap = 0;
int i;
- init_nat_k (&kv, e_addr, e_port, 0, proto);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
if (!is_sm_lb (m->flags))
- return VNET_API_ERROR_INVALID_VALUE;
+ {
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
pool_foreach (local, m->locals)
{
@@ -1295,7 +1520,9 @@ nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
if (is_add)
{
if (match_local)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
pool_get (m->locals, local);
clib_memset (local, 0, sizeof (*local));
@@ -1309,10 +1536,13 @@ nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
if (!is_sm_out2in_only (m->flags))
{
- init_nat_kv (&kv, l_addr, l_port, local->fib_index, proto, 0,
- m - sm->static_mappings);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1))
- nat_elog_err (sm, "static_mapping_by_local key add failed");
+ if (nat44_ed_sm_i2o_add (sm, m, l_addr, l_port, local->fib_index,
+ proto))
+ {
+ nat_log_err ("sm i2o key add failed");
+ pool_put (m->locals, local);
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
}
}
else
@@ -1328,9 +1558,9 @@ nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
if (!is_sm_out2in_only (m->flags))
{
- init_nat_k (&kv, l_addr, l_port, match_local->fib_index, proto);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0))
- nat_elog_err (sm, "static_mapping_by_local key del failed");
+ if (nat44_ed_sm_i2o_del (sm, l_addr, l_port, match_local->fib_index,
+ proto))
+ nat_log_err ("sm i2o key del failed");
}
if (sm->num_workers > 1)
@@ -1347,15 +1577,15 @@ nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
/* Delete sessions */
pool_foreach (s, tsm->sessions) {
- if (!(is_lb_session (s)))
- continue;
+ if (!(nat44_ed_is_lb_session (s)))
+ continue;
- if ((s->in2out.addr.as_u32 != match_local->addr.as_u32) ||
- s->in2out.port != match_local->port)
- continue;
+ if ((s->in2out.addr.as_u32 != match_local->addr.as_u32) ||
+ s->in2out.port != match_local->port)
+ continue;
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
- nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
}
pool_put (m->locals, match_local);
@@ -1396,116 +1626,6 @@ nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
return 0;
}
-int
-snat_del_address (snat_main_t * sm, ip4_address_t addr, u8 delete_sm,
- u8 twice_nat)
-{
- snat_address_t *a = 0;
- snat_session_t *ses;
- u32 *ses_to_be_removed = 0, *ses_index;
- snat_main_per_thread_data_t *tsm;
- snat_static_mapping_t *m;
- snat_interface_t *interface;
- int i;
- snat_address_t *addresses =
- twice_nat ? sm->twice_nat_addresses : sm->addresses;
-
- /* Find SNAT address */
- for (i = 0; i < vec_len (addresses); i++)
- {
- if (addresses[i].addr.as_u32 == addr.as_u32)
- {
- a = addresses + i;
- break;
- }
- }
- if (!a)
- {
- nat_log_err ("no such address");
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
-
- if (delete_sm)
- {
- pool_foreach (m, sm->static_mappings)
- {
- if (m->external_addr.as_u32 == addr.as_u32)
- {
- nat44_ed_del_static_mapping (m->local_addr, m->external_addr,
- m->local_port, m->external_port,
- m->proto, m->vrf_id, ~0, m->flags);
- }
- }
- }
- else
- {
- /* Check if address is used in some static mapping */
- if (is_snat_address_used_in_static_mapping (sm, addr))
- {
- nat_log_err ("address used in static mapping");
- return VNET_API_ERROR_UNSPECIFIED;
- }
- }
-
- if (a->fib_index != ~0)
- fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
-
- /* Delete sessions using address */
- if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports)
- {
- vec_foreach (tsm, sm->per_thread_data)
- {
- pool_foreach (ses, tsm->sessions) {
- if (ses->out2in.addr.as_u32 == addr.as_u32)
- {
- nat_free_session_data (sm, ses, tsm - sm->per_thread_data, 0);
- vec_add1 (ses_to_be_removed, ses - tsm->sessions);
- }
- }
-
- vec_foreach (ses_index, ses_to_be_removed)
- {
- ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
- nat_ed_session_delete (sm, ses, tsm - sm->per_thread_data, 1);
- }
-
- vec_free (ses_to_be_removed);
- }
- }
-
-#define _(N, i, n, s) \
- vec_free (a->busy_##n##_ports_per_thread);
- foreach_nat_protocol
-#undef _
-
- if (twice_nat)
- {
- vec_del1 (sm->twice_nat_addresses, i);
- return 0;
- }
- else vec_del1 (sm->addresses, i);
-
- /* Delete external address from FIB */
- pool_foreach (interface, sm->interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
-
- snat_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
- break;
- }
- pool_foreach (interface, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
-
- snat_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
- break;
- }
-
- return 0;
-}
-
void
expire_per_vrf_sessions (u32 fib_index)
{
@@ -1515,19 +1635,19 @@ expire_per_vrf_sessions (u32 fib_index)
vec_foreach (tsm, sm->per_thread_data)
{
- vec_foreach (per_vrf_sessions, tsm->per_vrf_sessions_vec)
- {
- if ((per_vrf_sessions->rx_fib_index == fib_index) ||
- (per_vrf_sessions->tx_fib_index == fib_index))
- {
- per_vrf_sessions->expired = 1;
- }
- }
+ pool_foreach (per_vrf_sessions, tsm->per_vrf_sessions_pool)
+ {
+ if ((per_vrf_sessions->rx_fib_index == fib_index) ||
+ (per_vrf_sessions->tx_fib_index == fib_index))
+ {
+ per_vrf_sessions->expired = 1;
+ }
+ }
}
}
void
-update_per_vrf_sessions_vec (u32 fib_index, int is_del)
+update_per_vrf_sessions_pool (u32 fib_index, int is_del)
{
snat_main_t *sm = &snat_main;
nat_fib_t *fib;
@@ -1563,10 +1683,10 @@ update_per_vrf_sessions_vec (u32 fib_index, int is_del)
}
}
-static_always_inline nat_outside_fib_t *
-nat44_ed_get_outside_fib (nat_outside_fib_t *outside_fibs, u32 fib_index)
+static_always_inline nat_fib_t *
+nat44_ed_get_outside_fib (nat_fib_t *outside_fibs, u32 fib_index)
{
- nat_outside_fib_t *f;
+ nat_fib_t *f;
vec_foreach (f, outside_fibs)
{
if (f->fib_index == fib_index)
@@ -1597,10 +1717,8 @@ nat44_ed_add_interface (u32 sw_if_index, u8 is_inside)
const char *del_feature_name, *feature_name;
snat_main_t *sm = &snat_main;
- nat_outside_fib_t *outside_fib;
- snat_static_mapping_t *m;
+ nat_fib_t *outside_fib;
snat_interface_t *i;
- snat_address_t *ap;
u32 fib_index;
int rv;
@@ -1619,8 +1737,8 @@ nat44_ed_add_interface (u32 sw_if_index, u8 is_inside)
i = nat44_ed_get_interface (sm->interfaces, sw_if_index);
if (i)
{
- if ((nat_interface_is_inside (i) && is_inside) ||
- (nat_interface_is_outside (i) && !is_inside))
+ if ((nat44_ed_is_interface_inside (i) && is_inside) ||
+ (nat44_ed_is_interface_outside (i) && !is_inside))
{
return 0;
}
@@ -1672,7 +1790,7 @@ nat44_ed_add_interface (u32 sw_if_index, u8 is_inside)
fib_index =
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- update_per_vrf_sessions_vec (fib_index, 0 /*is_del*/);
+ update_per_vrf_sessions_pool (fib_index, 0 /*is_del*/);
if (!is_inside)
{
@@ -1681,28 +1799,19 @@ nat44_ed_add_interface (u32 sw_if_index, u8 is_inside)
outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
if (outside_fib)
{
- outside_fib->refcount++;
+ outside_fib->ref_count++;
}
else
{
vec_add2 (sm->outside_fibs, outside_fib, 1);
outside_fib->fib_index = fib_index;
- outside_fib->refcount = 1;
+ outside_fib->ref_count = 1;
}
- vec_foreach (ap, sm->addresses)
- {
- snat_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, 1);
- }
- pool_foreach (m, sm->static_mappings)
- {
- if (!(is_sm_addr_only (m->flags)) ||
- (m->local_addr.as_u32 == m->external_addr.as_u32))
- {
- continue;
- }
- snat_add_del_addr_to_fib (&m->external_addr, 32, sw_if_index, 1);
- }
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 1);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 1);
+
+ nat44_ed_bind_if_addr_to_nat_addr (sw_if_index);
}
else
{
@@ -1718,10 +1827,8 @@ nat44_ed_del_interface (u32 sw_if_index, u8 is_inside)
const char *del_feature_name, *feature_name;
snat_main_t *sm = &snat_main;
- nat_outside_fib_t *outside_fib;
- snat_static_mapping_t *m;
+ nat_fib_t *outside_fib;
snat_interface_t *i;
- snat_address_t *ap;
u32 fib_index;
int rv;
@@ -1738,7 +1845,7 @@ nat44_ed_del_interface (u32 sw_if_index, u8 is_inside)
return VNET_API_ERROR_NO_SUCH_ENTRY;
}
- if (nat_interface_is_inside (i) && nat_interface_is_outside (i))
+ if (nat44_ed_is_interface_inside (i) && nat44_ed_is_interface_outside (i))
{
if (sm->num_workers > 1)
{
@@ -1798,34 +1905,22 @@ nat44_ed_del_interface (u32 sw_if_index, u8 is_inside)
fib_index =
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- update_per_vrf_sessions_vec (fib_index, 1 /*is_del*/);
+ update_per_vrf_sessions_pool (fib_index, 1 /*is_del*/);
if (!is_inside)
{
outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
if (outside_fib)
{
- outside_fib->refcount--;
- if (!outside_fib->refcount)
+ outside_fib->ref_count--;
+ if (!outside_fib->ref_count)
{
vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
}
}
- vec_foreach (ap, sm->addresses)
- {
- snat_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, 0);
- }
-
- pool_foreach (m, sm->static_mappings)
- {
- if (!(is_sm_addr_only (m->flags)) ||
- (m->local_addr.as_u32 == m->external_addr.as_u32))
- {
- continue;
- }
- snat_add_del_addr_to_fib (&m->external_addr, 32, sw_if_index, 0);
- }
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 0);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 0);
}
return 0;
@@ -1836,10 +1931,8 @@ nat44_ed_add_output_interface (u32 sw_if_index)
{
snat_main_t *sm = &snat_main;
- nat_outside_fib_t *outside_fib;
- snat_static_mapping_t *m;
+ nat_fib_t *outside_fib;
snat_interface_t *i;
- snat_address_t *ap;
u32 fib_index;
int rv;
@@ -1911,34 +2004,24 @@ nat44_ed_add_output_interface (u32 sw_if_index)
fib_index =
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- update_per_vrf_sessions_vec (fib_index, 0 /*is_del*/);
+ update_per_vrf_sessions_pool (fib_index, 0 /*is_del*/);
outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
if (outside_fib)
{
- outside_fib->refcount++;
+ outside_fib->ref_count++;
}
else
{
vec_add2 (sm->outside_fibs, outside_fib, 1);
outside_fib->fib_index = fib_index;
- outside_fib->refcount = 1;
+ outside_fib->ref_count = 1;
}
- vec_foreach (ap, sm->addresses)
- {
- snat_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, 1);
- }
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 1);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 1);
- pool_foreach (m, sm->static_mappings)
- {
- if (!((is_sm_addr_only (m->flags))) ||
- (m->local_addr.as_u32 == m->external_addr.as_u32))
- {
- continue;
- }
- snat_add_del_addr_to_fib (&m->external_addr, 32, sw_if_index, 1);
- }
+ nat44_ed_bind_if_addr_to_nat_addr (sw_if_index);
return 0;
}
@@ -1948,10 +2031,8 @@ nat44_ed_del_output_interface (u32 sw_if_index)
{
snat_main_t *sm = &snat_main;
- nat_outside_fib_t *outside_fib;
- snat_static_mapping_t *m;
+ nat_fib_t *outside_fib;
snat_interface_t *i;
- snat_address_t *ap;
u32 fib_index;
int rv;
@@ -2013,32 +2094,20 @@ nat44_ed_del_output_interface (u32 sw_if_index)
fib_index =
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- update_per_vrf_sessions_vec (fib_index, 1 /*is_del*/);
+ update_per_vrf_sessions_pool (fib_index, 1 /*is_del*/);
outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
if (outside_fib)
{
- outside_fib->refcount--;
- if (!outside_fib->refcount)
+ outside_fib->ref_count--;
+ if (!outside_fib->ref_count)
{
vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
}
}
- vec_foreach (ap, sm->addresses)
- {
- snat_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, 0);
- }
-
- pool_foreach (m, sm->static_mappings)
- {
- if (!((is_sm_addr_only (m->flags))) ||
- (m->local_addr.as_u32 == m->external_addr.as_u32))
- {
- continue;
- }
- snat_add_del_addr_to_fib (&m->external_addr, 32, sw_if_index, 0);
- }
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 0);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 0);
return 0;
}
@@ -2064,7 +2133,7 @@ snat_set_workers (uword * bitmap)
j++;
}
- sm->port_per_thread = (0xffff - 1024) / _vec_len (sm->workers);
+ sm->port_per_thread = (65536 - ED_USER_PORT_OFFSET) / _vec_len (sm->workers);
return 0;
}
@@ -2074,17 +2143,28 @@ nat44_ed_set_frame_queue_nelts (u32 frame_queue_nelts)
{
fail_if_enabled ();
snat_main_t *sm = &snat_main;
+
+ if ((sm->fq_in2out_index != ~0) || (sm->fq_out2in_index != ~0) ||
+ (sm->fq_in2out_output_index != ~0))
+ {
+ // frame queu nelts can be set only before first
+ // call to nat44_plugin_enable after that it
+ // doesn't make sense
+ nat_log_err ("Frame queue was already initialized. "
+ "Change is not possible");
+ return 1;
+ }
+
sm->frame_queue_nelts = frame_queue_nelts;
return 0;
}
static void
-snat_update_outside_fib (ip4_main_t * im, uword opaque,
- u32 sw_if_index, u32 new_fib_index,
- u32 old_fib_index)
+nat44_ed_update_outside_fib_cb (ip4_main_t *im, uword opaque, u32 sw_if_index,
+ u32 new_fib_index, u32 old_fib_index)
{
snat_main_t *sm = &snat_main;
- nat_outside_fib_t *outside_fib;
+ nat_fib_t *outside_fib;
snat_interface_t *i;
u8 is_add = 1;
u8 match = 0;
@@ -2096,20 +2176,20 @@ snat_update_outside_fib (ip4_main_t * im, uword opaque,
}
pool_foreach (i, sm->interfaces)
- {
+ {
if (i->sw_if_index == sw_if_index)
{
- if (!(nat_interface_is_outside (i)))
+ if (!(nat44_ed_is_interface_outside (i)))
return;
match = 1;
}
}
pool_foreach (i, sm->output_feature_interfaces)
- {
+ {
if (i->sw_if_index == sw_if_index)
{
- if (!(nat_interface_is_outside (i)))
+ if (!(nat44_ed_is_interface_outside (i)))
return;
match = 1;
}
@@ -2119,54 +2199,45 @@ snat_update_outside_fib (ip4_main_t * im, uword opaque,
return;
vec_foreach (outside_fib, sm->outside_fibs)
- {
- if (outside_fib->fib_index == old_fib_index)
- {
- outside_fib->refcount--;
- if (!outside_fib->refcount)
- vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
- break;
- }
- }
+ {
+ if (outside_fib->fib_index == old_fib_index)
+ {
+ outside_fib->ref_count--;
+ if (!outside_fib->ref_count)
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ break;
+ }
+ }
vec_foreach (outside_fib, sm->outside_fibs)
- {
- if (outside_fib->fib_index == new_fib_index)
- {
- outside_fib->refcount++;
- is_add = 0;
- break;
- }
- }
+ {
+ if (outside_fib->fib_index == new_fib_index)
+ {
+ outside_fib->ref_count++;
+ is_add = 0;
+ break;
+ }
+ }
if (is_add)
{
vec_add2 (sm->outside_fibs, outside_fib, 1);
- outside_fib->refcount = 1;
+ outside_fib->ref_count = 1;
outside_fib->fib_index = new_fib_index;
}
}
-static void
-snat_update_outside_fib (ip4_main_t * im, uword opaque,
- u32 sw_if_index, u32 new_fib_index,
- u32 old_fib_index);
+static void nat44_ed_update_outside_fib_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
+ u32 old_fib_index);
-static void
-snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index, u32 is_delete);
+static void nat44_ed_add_del_interface_address_cb (
+ ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index, u32 is_delete);
-static void
-nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index, u32 is_delete);
+static void nat44_ed_add_del_static_mapping_cb (
+ ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index, u32 is_delete);
void
test_key_calc_split ()
@@ -2188,8 +2259,8 @@ test_key_calc_split ()
u32 thread_index = 3000000001;
u32 session_index = 3000000221;
clib_bihash_kv_16_8_t kv;
- init_ed_kv (&kv, l_addr, l_port, r_addr, r_port, fib_index, proto,
- thread_index, session_index);
+ init_ed_kv (&kv, l_addr.as_u32, l_port, r_addr.as_u32, r_port, fib_index,
+ proto, thread_index, session_index);
ip4_address_t l_addr2;
ip4_address_t r_addr2;
clib_memset (&l_addr2, 0, sizeof (l_addr2));
@@ -2208,16 +2279,6 @@ test_key_calc_split ()
ASSERT (fib_index == fib_index2);
ASSERT (thread_index == ed_value_get_thread_index (&kv));
ASSERT (session_index == ed_value_get_session_index (&kv));
-
- fib_index = 7001;
- proto = 5;
- nat_protocol_t proto3 = ~0;
- u64 key = calc_nat_key (l_addr, l_port, fib_index, proto);
- split_nat_key (key, &l_addr2, &l_port2, &fib_index2, &proto3);
- ASSERT (l_addr.as_u32 == l_addr2.as_u32);
- ASSERT (l_port == l_port2);
- ASSERT (proto == proto3);
- ASSERT (fib_index == fib_index2);
}
static clib_error_t *
@@ -2237,21 +2298,6 @@ nat_ip_table_add_del (vnet_main_t * vnm, u32 table_id, u32 is_add)
VNET_IP_TABLE_ADD_DEL_FUNCTION (nat_ip_table_add_del);
-void
-nat44_set_node_indexes (snat_main_t * sm, vlib_main_t * vm)
-{
- vlib_node_t *node;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in");
- sm->out2in_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out");
- sm->in2out_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-output");
- sm->in2out_output_node_index = node->index;
-}
-
#define nat_validate_simple_counter(c, i) \
do \
{ \
@@ -2295,12 +2341,8 @@ nat_init (vlib_main_t * vm)
clib_memset (sm, 0, sizeof (*sm));
- // required
- sm->vnet_main = vnet_get_main ();
// convenience
sm->ip4_main = &ip4_main;
- sm->api_main = vlibapi_get_main ();
- sm->ip4_lookup_main = &ip4_main.lookup_main;
// frame queue indices used for handoff
sm->fq_out2in_index = ~0;
@@ -2309,15 +2351,13 @@ nat_init (vlib_main_t * vm)
sm->log_level = NAT_LOG_ERROR;
- nat44_set_node_indexes (sm, vm);
-
sm->log_class = vlib_log_register_class ("nat", 0);
nat_ipfix_logging_init (vm);
nat_init_simple_counter (sm->total_sessions, "total-sessions",
"/nat44-ed/total-sessions");
- sm->max_cfg_sessions_gauge = stat_segment_new_entry (
- (u8 *) "/nat44-ed/max-cfg-sessions", STAT_DIR_TYPE_SCALAR_INDEX);
+ sm->max_cfg_sessions_gauge =
+ vlib_stats_add_gauge ("/nat44-ed/max-cfg-sessions");
#define _(x) \
nat_init_simple_counter (sm->counters.fastpath.in2out.x, #x, \
@@ -2344,7 +2384,7 @@ nat_init (vlib_main_t * vm)
}
}
num_threads = tm->n_vlib_mains - 1;
- sm->port_per_thread = 0xffff - 1024;
+ sm->port_per_thread = 65536 - ED_USER_PORT_OFFSET;
vec_validate (sm->per_thread_data, num_threads);
/* Use all available workers by default */
@@ -2361,13 +2401,13 @@ nat_init (vlib_main_t * vm)
}
/* callbacks to call when interface address changes. */
- cbi.function = snat_ip4_add_del_interface_address_cb;
+ cbi.function = nat44_ed_add_del_interface_address_cb;
vec_add1 (sm->ip4_main->add_del_interface_address_callbacks, cbi);
- cbi.function = nat_ip4_add_del_addr_only_sm_cb;
+ cbi.function = nat44_ed_add_del_static_mapping_cb;
vec_add1 (sm->ip4_main->add_del_interface_address_callbacks, cbi);
/* callbacks to call when interface to table biding changes */
- cbt.function = snat_update_outside_fib;
+ cbt.function = nat44_ed_update_outside_fib_cb;
vec_add1 (sm->ip4_main->table_bind_callbacks, cbt);
sm->fib_src_low =
@@ -2392,26 +2432,15 @@ nat44_plugin_enable (nat44_config_t c)
fail_if_enabled ();
- if (c.static_mapping_only && !c.connection_tracking)
- {
- nat_log_err ("unsupported combination of configuration");
- return 1;
- }
-
- sm->static_mapping_only = c.static_mapping_only;
- sm->static_mapping_connection_tracking = c.connection_tracking;
-
sm->forwarding_enabled = 0;
sm->mss_clamping = 0;
- sm->pat = (!c.static_mapping_only ||
- (c.static_mapping_only && c.connection_tracking));
if (!c.sessions)
c.sessions = 63 * 1024;
sm->max_translations_per_thread = c.sessions;
- stat_segment_set_state_counter (sm->max_cfg_sessions_gauge,
- sm->max_translations_per_thread);
+ vlib_stats_set_gauge (sm->max_cfg_sessions_gauge,
+ sm->max_translations_per_thread);
sm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
vec_add1 (sm->max_translations_per_fib, sm->max_translations_per_thread);
@@ -2425,7 +2454,7 @@ nat44_plugin_enable (nat44_config_t c)
sm->outside_fib_index = fib_table_find_or_create_and_lock (
FIB_PROTOCOL_IP4, c.outside_vrf, sm->fib_src_hi);
- nat44_ed_db_init (sm->max_translations_per_thread, sm->translation_buckets);
+ nat44_ed_db_init ();
nat_affinity_enable ();
@@ -2440,20 +2469,26 @@ nat44_plugin_enable (nat44_config_t c)
if (sm->num_workers > 1)
{
+ vlib_main_t *vm = vlib_get_main ();
+ vlib_node_t *node;
+
if (sm->fq_in2out_index == ~0)
{
- sm->fq_in2out_index = vlib_frame_queue_main_init (
- sm->in2out_node_index, sm->frame_queue_nelts);
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out");
+ sm->fq_in2out_index =
+ vlib_frame_queue_main_init (node->index, sm->frame_queue_nelts);
}
if (sm->fq_out2in_index == ~0)
{
- sm->fq_out2in_index = vlib_frame_queue_main_init (
- sm->out2in_node_index, sm->frame_queue_nelts);
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in");
+ sm->fq_out2in_index =
+ vlib_frame_queue_main_init (node->index, sm->frame_queue_nelts);
}
if (sm->fq_in2out_output_index == ~0)
{
- sm->fq_in2out_output_index = vlib_frame_queue_main_init (
- sm->in2out_output_node_index, sm->frame_queue_nelts);
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-output");
+ sm->fq_in2out_output_index =
+ vlib_frame_queue_main_init (node->index, sm->frame_queue_nelts);
}
}
@@ -2463,86 +2498,213 @@ nat44_plugin_enable (nat44_config_t c)
return 0;
}
-void
-nat44_addresses_free (snat_address_t ** addresses)
+int
+nat44_ed_del_addresses ()
{
- snat_address_t *ap;
- vec_foreach (ap, *addresses)
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a, *vec;
+ int error = 0;
+
+ vec = vec_dup (sm->addresses);
+ vec_foreach (a, vec)
{
- #define _(N, i, n, s) \
- vec_free (ap->busy_##n##_ports_per_thread);
- foreach_nat_protocol
- #undef _
+ error = nat44_ed_del_address (a->addr, 0);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing adderess");
+ }
}
- vec_free (*addresses);
- *addresses = 0;
+ vec_free (vec);
+ vec_free (sm->addresses);
+ sm->addresses = 0;
+
+ vec = vec_dup (sm->twice_nat_addresses);
+ vec_foreach (a, vec)
+ {
+ error = nat44_ed_del_address (a->addr, 1);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing adderess");
+ }
+ }
+ vec_free (vec);
+ vec_free (sm->twice_nat_addresses);
+ sm->twice_nat_addresses = 0;
+
+ vec_free (sm->addr_to_resolve);
+ sm->addr_to_resolve = 0;
+
+ return error;
}
int
-nat44_plugin_disable ()
+nat44_ed_del_interfaces ()
{
snat_main_t *sm = &snat_main;
snat_interface_t *i, *pool;
int error = 0;
- fail_if_disabled ();
-
pool = pool_dup (sm->interfaces);
pool_foreach (i, pool)
{
- if (nat_interface_is_inside (i))
+ if (nat44_ed_is_interface_inside (i))
{
error = nat44_ed_del_interface (i->sw_if_index, 1);
}
- if (nat_interface_is_outside (i))
+ if (nat44_ed_is_interface_outside (i))
{
error = nat44_ed_del_interface (i->sw_if_index, 0);
}
+
if (error)
- {
- nat_log_err ("error occurred while removing interface %u",
- i->sw_if_index);
- }
+ {
+ nat_log_err ("error occurred while removing interface");
+ }
}
- pool_free (sm->interfaces);
pool_free (pool);
+ pool_free (sm->interfaces);
sm->interfaces = 0;
+ return error;
+}
+
+int
+nat44_ed_del_output_interfaces ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i, *pool;
+ int error = 0;
pool = pool_dup (sm->output_feature_interfaces);
pool_foreach (i, pool)
{
error = nat44_ed_del_output_interface (i->sw_if_index);
if (error)
- {
- nat_log_err ("error occurred while removing interface %u",
- i->sw_if_index);
- }
+ {
+ nat_log_err ("error occurred while removing output interface");
+ }
}
- pool_free (sm->output_feature_interfaces);
pool_free (pool);
+ pool_free (sm->output_feature_interfaces);
sm->output_feature_interfaces = 0;
+ return error;
+}
+
+static clib_error_t *
+nat44_ed_sw_interface_add_del (vnet_main_t *vnm, u32 sw_if_index, u32 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i;
+ int error = 0;
+
+ if (is_add)
+ return 0;
+
+ if (!sm->enabled)
+ return 0;
+
+ i = nat44_ed_get_interface (sm->interfaces, sw_if_index);
+ if (i)
+ {
+ bool is_inside = nat44_ed_is_interface_inside (i);
+ bool is_outside = nat44_ed_is_interface_outside (i);
+
+ if (is_inside)
+ {
+ error |= nat44_ed_del_interface (sw_if_index, 1);
+ }
+ if (is_outside)
+ {
+ error |= nat44_ed_del_interface (sw_if_index, 0);
+ }
+
+ if (error)
+ {
+ nat_log_err ("error occurred while removing interface");
+ }
+ }
+
+ i = nat44_ed_get_interface (sm->output_feature_interfaces, sw_if_index);
+ if (i)
+ {
+ error = nat44_ed_del_output_interface (sw_if_index);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing output interface");
+ }
+ }
+
+ return 0;
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (nat44_ed_sw_interface_add_del);
+
+int
+nat44_ed_del_static_mappings ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m, *pool;
+ int error = 0;
+
+ pool = pool_dup (sm->static_mappings);
+ pool_foreach (m, pool)
+ {
+ error = nat44_ed_del_static_mapping_internal (
+ m->local_addr, m->external_addr, m->local_port, m->external_port,
+ m->proto, m->vrf_id, m->flags);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing mapping");
+ }
+ }
+ pool_free (pool);
+ pool_free (sm->static_mappings);
+ sm->static_mappings = 0;
+
+ vec_free (sm->sm_to_resolve);
+ sm->sm_to_resolve = 0;
+
+ return error;
+}
+
+int
+nat44_plugin_disable ()
+{
+ snat_main_t *sm = &snat_main;
+ int rc, error = 0;
+
+ fail_if_disabled ();
+
+ rc = nat44_ed_del_static_mappings ();
+ if (rc)
+ error = VNET_API_ERROR_BUG;
+
+ rc = nat44_ed_del_addresses ();
+ if (rc)
+ error = VNET_API_ERROR_BUG;
+
+ rc = nat44_ed_del_interfaces ();
+ if (rc)
+ error = VNET_API_ERROR_BUG;
+
+ rc = nat44_ed_del_output_interfaces ();
+ if (rc)
+ error = VNET_API_ERROR_BUG;
+
+ nat44_ed_del_vrf_tables ();
vec_free (sm->max_translations_per_fib);
+ sm->max_translations_per_fib = 0;
nat44_ed_db_free ();
- nat44_addresses_free (&sm->addresses);
- nat44_addresses_free (&sm->twice_nat_addresses);
-
- vec_free (sm->to_resolve);
- vec_free (sm->auto_add_sw_if_indices);
- vec_free (sm->auto_add_sw_if_indices_twice_nat);
+ clib_memset (&sm->rconfig, 0, sizeof (sm->rconfig));
- sm->to_resolve = 0;
- sm->auto_add_sw_if_indices = 0;
- sm->auto_add_sw_if_indices_twice_nat = 0;
+ nat_affinity_disable ();
sm->forwarding_enabled = 0;
-
sm->enabled = 0;
- clib_memset (&sm->rconfig, 0, sizeof (sm->rconfig));
- return 0;
+ return error;
}
void
@@ -2556,14 +2718,16 @@ nat44_ed_forwarding_enable_disable (u8 is_enable)
sm->forwarding_enabled = is_enable != 0;
- if (is_enable)
- return;
+ if (!sm->enabled || is_enable)
+ {
+ return;
+ }
vec_foreach (tsm, sm->per_thread_data)
{
pool_foreach (s, tsm->sessions)
{
- if (is_fwd_bypass_session (s))
+ if (na44_ed_is_fwd_bypass_session (s))
{
vec_add1 (ses_to_be_removed, s - tsm->sessions);
}
@@ -2571,7 +2735,7 @@ nat44_ed_forwarding_enable_disable (u8 is_enable)
vec_foreach (ses_index, ses_to_be_removed)
{
s = pool_elt_at_index (tsm->sessions, ses_index[0]);
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
}
@@ -2579,125 +2743,91 @@ nat44_ed_forwarding_enable_disable (u8 is_enable)
}
}
-void
-snat_free_outside_address_and_port (snat_address_t *addresses,
- u32 thread_index, ip4_address_t *addr,
- u16 port, nat_protocol_t protocol)
+static_always_inline snat_static_mapping_t *
+nat44_ed_sm_match (snat_main_t *sm, ip4_address_t match_addr, u16 match_port,
+ u32 match_fib_index, ip_protocol_t match_protocol,
+ int by_external)
{
- snat_main_t *sm = &snat_main;
- snat_address_t *a;
- u32 address_index;
- u16 port_host_byte_order = clib_net_to_host_u16 (port);
-
- for (address_index = 0; address_index < vec_len (addresses);
- address_index++)
+ snat_static_mapping_t *m;
+ if (!by_external)
{
- if (addresses[address_index].addr.as_u32 == addr->as_u32)
- break;
- }
-
- ASSERT (address_index < vec_len (addresses));
-
- a = addresses + address_index;
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, match_port, match_fib_index,
+ match_protocol);
+ if (m)
+ return m;
- switch (protocol)
- {
-#define _(N, i, n, s) \
- case NAT_PROTOCOL_##N: \
- ASSERT (a->busy_##n##_port_refcounts[port_host_byte_order] >= 1); \
- --a->busy_##n##_port_refcounts[port_host_byte_order]; \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[thread_index]--; \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return;
- }
-}
+ // try address only mapping
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, 0, match_fib_index, 0);
+ if (m)
+ return m;
-int
-nat_set_outside_address_and_port (snat_address_t *addresses, u32 thread_index,
- ip4_address_t addr, u16 port,
- nat_protocol_t protocol)
-{
- snat_main_t *sm = &snat_main;
- snat_address_t *a = 0;
- u32 address_index;
- u16 port_host_byte_order = clib_net_to_host_u16 (port);
-
- for (address_index = 0; address_index < vec_len (addresses);
- address_index++)
- {
- if (addresses[address_index].addr.as_u32 != addr.as_u32)
- continue;
-
- a = addresses + address_index;
- switch (protocol)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_port_refcounts[port_host_byte_order]) \
- return VNET_API_ERROR_INSTANCE_IN_USE; \
- ++a->busy_##n##_port_refcounts[port_host_byte_order]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- return 0;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return 1;
+ // default static mapping fib index (based on configuration)
+ if (sm->inside_fib_index != match_fib_index)
+ {
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, match_port,
+ sm->inside_fib_index, match_protocol);
+ if (m)
+ return m;
+
+ // try address only mapping
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, 0, sm->inside_fib_index,
+ 0);
+ if (m)
+ return m;
+ }
+ // TODO: this specific use case may be deprecated (needs testing)
+ if (sm->outside_fib_index != match_fib_index)
+ {
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, match_port,
+ sm->outside_fib_index, match_protocol);
+ if (m)
+ return m;
+
+ // try address only mapping
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, 0, sm->outside_fib_index,
+ 0);
+ if (m)
+ return m;
}
}
+ else
+ {
+ m =
+ nat44_ed_sm_o2i_lookup (sm, match_addr, match_port, 0, match_protocol);
+ if (m)
+ return m;
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ // try address only mapping
+ m = nat44_ed_sm_o2i_lookup (sm, match_addr, 0, 0, 0);
+ if (m)
+ return m;
+ }
+ return 0;
}
int
-snat_static_mapping_match (vlib_main_t *vm, snat_main_t *sm,
- ip4_address_t match_addr, u16 match_port,
- u32 match_fib_index, nat_protocol_t match_protocol,
+snat_static_mapping_match (vlib_main_t *vm, ip4_address_t match_addr,
+ u16 match_port, u32 match_fib_index,
+ ip_protocol_t match_protocol,
ip4_address_t *mapping_addr, u16 *mapping_port,
- u32 *mapping_fib_index, u8 by_external,
+ u32 *mapping_fib_index, int by_external,
u8 *is_addr_only, twice_nat_type_t *twice_nat,
lb_nat_type_t *lb, ip4_address_t *ext_host_addr,
u8 *is_identity_nat, snat_static_mapping_t **out)
{
- clib_bihash_kv_8_8_t kv, value;
- clib_bihash_8_8_t *mapping_hash;
+ snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
u32 rand, lo = 0, hi, mid, *tmp = 0, i;
nat44_lb_addr_port_t *local;
u8 backend_index;
- if (!by_external)
- {
- mapping_hash = &sm->static_mapping_by_local;
- init_nat_k (&kv, match_addr, match_port, match_fib_index,
- match_protocol);
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- {
- /* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- return 1;
- }
- }
- else
+ m = nat44_ed_sm_match (sm, match_addr, match_port, match_fib_index,
+ match_protocol, by_external);
+ if (!m)
{
- mapping_hash = &sm->static_mapping_by_external;
- init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- {
- /* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, 0, 0);
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- return 1;
- }
+ return 1;
}
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
if (by_external)
{
if (is_sm_lb (m->flags))
@@ -2829,7 +2959,7 @@ nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
if (PREDICT_FALSE (is_output))
{
fib_index = sm->outside_fib_index;
- nat_outside_fib_t *outside_fib;
+ nat_fib_t *outside_fib;
fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP4,
@@ -2864,9 +2994,33 @@ nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
}
}
- init_ed_k (&kv16, ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- fib_index, ip->protocol);
+ if (PREDICT_FALSE (ip->protocol == IP_PROTOCOL_ICMP))
+ {
+ ip4_address_t lookup_saddr, lookup_daddr;
+ u16 lookup_sport, lookup_dport;
+ u8 lookup_protocol;
+
+ if (!nat_get_icmp_session_lookup_values (
+ b, ip, &lookup_saddr, &lookup_sport, &lookup_daddr,
+ &lookup_dport, &lookup_protocol))
+ {
+ init_ed_k (&kv16, lookup_saddr.as_u32, lookup_sport,
+ lookup_daddr.as_u32, lookup_dport, rx_fib_index,
+ lookup_protocol);
+ if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16))
+ {
+ next_worker_index = ed_value_get_thread_index (&value16);
+ vnet_buffer2 (b)->nat.cached_session_index =
+ ed_value_get_session_index (&value16);
+ goto out;
+ }
+ }
+ }
+
+ init_ed_k (&kv16, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, fib_index,
+ ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16))
{
@@ -2877,9 +3031,10 @@ nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
}
// dst NAT
- init_ed_k (&kv16, ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- rx_fib_index, ip->protocol);
+ init_ed_k (&kv16, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, rx_fib_index,
+ ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16))
{
next_worker_index = ed_value_get_thread_index (&value16);
@@ -2890,7 +3045,9 @@ nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
}
hash = ip->src_address.as_u32 + (ip->src_address.as_u32 >> 8) +
- (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >> 24);
+ (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >> 24) +
+ rx_fib_index + (rx_fib_index >> 8) + (rx_fib_index >> 16) +
+ (rx_fib_index >> 24);
if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers))))
next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)];
@@ -2921,17 +3078,16 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
u32 rx_fib_index, u8 is_output)
{
snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
clib_bihash_kv_16_8_t kv16, value16;
- u32 proto, next_worker_index = 0;
+ u8 proto, next_worker_index = 0;
u16 port;
snat_static_mapping_t *m;
u32 hash;
- proto = ip_proto_to_nat_proto (ip->protocol);
+ proto = ip->protocol;
- if (PREDICT_FALSE (proto == NAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (IP_PROTOCOL_ICMP == proto))
{
ip4_address_t lookup_saddr, lookup_daddr;
u16 lookup_sport, lookup_dport;
@@ -2940,8 +3096,9 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
b, ip, &lookup_saddr, &lookup_sport, &lookup_daddr, &lookup_dport,
&lookup_protocol))
{
- init_ed_k (&kv16, lookup_saddr, lookup_sport, lookup_daddr,
- lookup_dport, rx_fib_index, lookup_protocol);
+ init_ed_k (&kv16, lookup_saddr.as_u32, lookup_sport,
+ lookup_daddr.as_u32, lookup_dport, rx_fib_index,
+ lookup_protocol);
if (PREDICT_TRUE (
!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
{
@@ -2955,9 +3112,10 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
}
}
- init_ed_k (&kv16, ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- rx_fib_index, ip->protocol);
+ init_ed_k (&kv16, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, rx_fib_index,
+ ip->protocol);
if (PREDICT_TRUE (
!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
@@ -2975,18 +3133,18 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
/* first try static mappings without port */
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv, ip->dst_address, 0, 0, 0);
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, ip->dst_address, 0, 0, proto);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
- next_worker_index = m->workers[0];
- goto done;
+ {
+ next_worker_index = m->workers[0];
+ goto done;
+ }
}
}
/* unknown protocol */
- if (PREDICT_FALSE (proto == NAT_PROTOCOL_OTHER))
+ if (PREDICT_FALSE (nat44_ed_is_unk_proto (proto)))
{
/* use current thread */
next_worker_index = vlib_get_thread_index ();
@@ -2999,7 +3157,7 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
{
udp_header_t *udp = ip4_next_header (ip);
icmp46_header_t *icmp = (icmp46_header_t *) udp;
- icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1);
+ nat_icmp_echo_header_t *echo = (nat_icmp_echo_header_t *) (icmp + 1);
if (!icmp_type_is_error_message
(vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
port = vnet_buffer (b)->ip.reass.l4_src_port;
@@ -3007,18 +3165,19 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
{
/* if error message, then it's not fragmented and we can access it */
ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1);
- proto = ip_proto_to_nat_proto (inner_ip->protocol);
+ proto = inner_ip->protocol;
void *l4_header = ip4_next_header (inner_ip);
switch (proto)
{
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
icmp = (icmp46_header_t *) l4_header;
- echo = (icmp_echo_header_t *) (icmp + 1);
+ echo = (nat_icmp_echo_header_t *) (icmp + 1);
port = echo->identifier;
break;
- case NAT_PROTOCOL_UDP:
- case NAT_PROTOCOL_TCP:
- port = ((tcp_udp_header_t *) l4_header)->src_port;
+ case IP_PROTOCOL_UDP:
+ /* breakthrough */
+ case IP_PROTOCOL_TCP:
+ port = ((nat_tcp_udp_header_t *) l4_header)->src_port;
break;
default:
next_worker_index = vlib_get_thread_index ();
@@ -3030,11 +3189,9 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
/* try static mappings with port */
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv, ip->dst_address, port, 0, proto);
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, ip->dst_address, port, 0, proto);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
if (!is_sm_lb (m->flags))
{
next_worker_index = m->workers[0];
@@ -3054,9 +3211,7 @@ nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
}
/* worker by outside port */
- next_worker_index = sm->first_worker_index;
- next_worker_index +=
- sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread];
+ next_worker_index = get_thread_idx_by_port (clib_net_to_host_u16 (port));
done:
nat_elog_debug_handoff (sm, "HANDOFF OUT2IN", next_worker_index,
@@ -3085,16 +3240,12 @@ nat44_set_session_limit (u32 session_limit, u32 vrf_id)
{
snat_main_t *sm = &snat_main;
u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
- u32 len = vec_len (sm->max_translations_per_fib);
-
- if (len <= fib_index)
- {
- vec_validate (sm->max_translations_per_fib, fib_index + 1);
- for (; len < vec_len (sm->max_translations_per_fib); len++)
- sm->max_translations_per_fib[len] = sm->max_translations_per_thread;
- }
+ if (~0 == fib_index)
+ return -1;
+ vec_validate_init_empty (sm->max_translations_per_fib, fib_index,
+ sm->max_translations_per_thread);
sm->max_translations_per_fib[fib_index] = session_limit;
return 0;
}
@@ -3108,8 +3259,8 @@ nat44_update_session_limit (u32 session_limit, u32 vrf_id)
return 1;
sm->max_translations_per_thread = nat44_get_max_session_limit ();
- stat_segment_set_state_counter (sm->max_cfg_sessions_gauge,
- sm->max_translations_per_thread);
+ vlib_stats_set_gauge (sm->max_cfg_sessions_gauge,
+ sm->max_translations_per_thread);
sm->translation_buckets =
nat_calc_bihash_buckets (sm->max_translations_per_thread);
@@ -3119,11 +3270,11 @@ nat44_update_session_limit (u32 session_limit, u32 vrf_id)
}
static void
-nat44_ed_worker_db_init (snat_main_per_thread_data_t *tsm, u32 translations,
- u32 translation_buckets)
+nat44_ed_worker_db_init (snat_main_per_thread_data_t *tsm, u32 translations)
{
dlist_elt_t *head;
+ pool_alloc (tsm->per_vrf_sessions_pool, translations);
pool_alloc (tsm->sessions, translations);
pool_alloc (tsm->lru_pool, translations);
@@ -3149,7 +3300,7 @@ nat44_ed_worker_db_init (snat_main_per_thread_data_t *tsm, u32 translations,
}
static void
-reinit_ed_flow_hash ()
+nat44_ed_flow_hash_init ()
{
snat_main_t *sm = &snat_main;
// we expect 2 flows per session, so multiply translation_buckets by 2
@@ -3160,34 +3311,16 @@ reinit_ed_flow_hash ()
}
static void
-nat44_ed_db_init (u32 translations, u32 translation_buckets)
+nat44_ed_db_init ()
{
snat_main_t *sm = &snat_main;
snat_main_per_thread_data_t *tsm;
- u32 static_mapping_buckets = 1024;
- u32 static_mapping_memory_size = 64 << 20;
-
- reinit_ed_flow_hash ();
-
- clib_bihash_init_8_8 (&sm->static_mapping_by_local,
- "static_mapping_by_local", static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
- format_static_mapping_kvp);
- clib_bihash_init_8_8 (&sm->static_mapping_by_external,
- "static_mapping_by_external", static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external,
- format_static_mapping_kvp);
+ nat44_ed_flow_hash_init ();
- if (sm->pat)
+ vec_foreach (tsm, sm->per_thread_data)
{
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
- sm->translation_buckets);
- }
+ nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread);
}
}
@@ -3196,283 +3329,299 @@ nat44_ed_worker_db_free (snat_main_per_thread_data_t *tsm)
{
pool_free (tsm->lru_pool);
pool_free (tsm->sessions);
- vec_free (tsm->per_vrf_sessions_vec);
+ pool_free (tsm->per_vrf_sessions_pool);
}
static void
-nat44_ed_db_free ()
+nat44_ed_flow_hash_free ()
{
snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
- pool_free (sm->static_mappings);
clib_bihash_free_16_8 (&sm->flow_hash);
- clib_bihash_free_8_8 (&sm->static_mapping_by_local);
- clib_bihash_free_8_8 (&sm->static_mapping_by_external);
+}
+
+static void
+nat44_ed_db_free ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_main_per_thread_data_t *tsm;
- if (sm->pat)
+ vec_foreach (tsm, sm->per_thread_data)
{
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_ed_worker_db_free (tsm);
- }
+ nat44_ed_worker_db_free (tsm);
}
+
+ nat44_ed_flow_hash_free ();
}
void
nat44_ed_sessions_clear ()
{
snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
-
- reinit_ed_flow_hash ();
- if (sm->pat)
- {
- vec_foreach (tsm, sm->per_thread_data)
- {
-
- nat44_ed_worker_db_free (tsm);
- nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
- sm->translation_buckets);
- }
- }
+ nat44_ed_db_free ();
+ nat44_ed_db_init ();
vlib_zero_simple_counter (&sm->total_sessions, 0);
}
static void
-nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index, u32 is_delete)
+nat44_ed_add_del_static_mapping_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index,
+ u32 is_delete)
{
+ snat_static_mapping_resolve_t *rp;
snat_main_t *sm = &snat_main;
- snat_static_map_resolve_t *rp;
- snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
- ip4_address_t l_addr;
- int i, rv;
+ int rv = 0;
if (!sm->enabled)
- return;
-
- for (i = 0; i < vec_len (sm->to_resolve); i++)
{
- rp = sm->to_resolve + i;
- if (rp->addr_only == 0)
- continue;
- if (rp->sw_if_index == sw_if_index)
- goto match;
+ return;
}
- return;
-
-match:
- init_nat_k (&kv, *address, rp->addr_only ? 0 : rp->e_port,
- sm->outside_fib_index, rp->addr_only ? 0 : rp->proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
- if (!is_delete)
+ vec_foreach (rp, sm->sm_to_resolve)
{
- /* Don't trip over lease renewal, static config */
- if (m)
- return;
- }
- else
- {
- if (!m)
- return;
+ if (sw_if_index == rp->sw_if_index)
+ {
+ if (is_delete)
+ {
+ if (rp->is_resolved)
+ {
+ rv = nat44_ed_del_static_mapping_internal (
+ rp->l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
+ rp->vrf_id, rp->flags);
+ if (rv)
+ {
+ nat_log_err ("ed del static mapping failed");
+ }
+ else
+ {
+ rp->is_resolved = 0;
+ }
+ }
+ }
+ else
+ {
+ if (!rp->is_resolved)
+ {
+ rv = nat44_ed_add_static_mapping_internal (
+ rp->l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
+ rp->vrf_id, ~0, rp->flags, rp->pool_addr, rp->tag);
+ if (rv)
+ {
+ nat_log_err ("ed add static mapping failed");
+ }
+ else
+ {
+ rp->is_resolved = 1;
+ }
+ }
+ }
+ }
}
+}
- /* Indetity mapping? */
- if (rp->l_addr.as_u32 == 0)
- l_addr.as_u32 = address[0].as_u32;
- else
- l_addr.as_u32 = rp->l_addr.as_u32;
+static int
+nat44_ed_get_addr_resolve_record (u32 sw_if_index, u8 twice_nat, int *out)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_resolve_t *rp;
+ int i;
- if (is_delete)
+ for (i = 0; i < vec_len (sm->addr_to_resolve); i++)
{
- rv = nat44_ed_del_static_mapping (l_addr, address[0], rp->l_port,
- rp->e_port, rp->proto, rp->vrf_id, ~0,
- rp->flags);
- }
- else
- {
- rv = nat44_ed_add_static_mapping (l_addr, address[0], rp->l_port,
- rp->e_port, rp->proto, rp->vrf_id, ~0,
- rp->flags, rp->pool_addr, rp->tag);
+ rp = sm->addr_to_resolve + i;
+
+ if ((rp->sw_if_index == sw_if_index) && (rp->is_twice_nat == twice_nat))
+ {
+ if (out)
+ {
+ *out = i;
+ }
+ return 0;
+ }
}
- if (rv)
+ return 1;
+}
+static int
+nat44_ed_del_addr_resolve_record (u32 sw_if_index, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ int i;
+ if (!nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, &i))
{
- nat_elog_notice_X1 (sm, "add_static_mapping returned %d", "i4", rv);
+ vec_del1 (sm->addr_to_resolve, i);
+ return 0;
}
+ return 1;
}
static void
-snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
+nat44_ed_add_del_interface_address_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, ip4_address_t *address,
u32 address_length,
u32 if_address_index, u32 is_delete)
{
snat_main_t *sm = &snat_main;
- snat_static_map_resolve_t *rp;
- ip4_address_t l_addr;
- int i, j;
- int rv;
+ snat_address_resolve_t *arp;
+ snat_address_t *ap;
u8 twice_nat = 0;
- snat_address_t *addresses = sm->addresses;
+ int i, rv;
if (!sm->enabled)
- return;
-
- for (i = 0; i < vec_len (sm->auto_add_sw_if_indices); i++)
{
- if (sw_if_index == sm->auto_add_sw_if_indices[i])
- goto match;
+ return;
}
- for (i = 0; i < vec_len (sm->auto_add_sw_if_indices_twice_nat); i++)
+ if (nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, &i))
{
twice_nat = 1;
- addresses = sm->twice_nat_addresses;
- if (sw_if_index == sm->auto_add_sw_if_indices_twice_nat[i])
- goto match;
+ if (nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, &i))
+ {
+ u32 fib_index =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ vec_foreach (ap, sm->addresses)
+ {
+ if ((fib_index == ap->fib_index) &&
+ (address->as_u32 == ap->addr.as_u32))
+ {
+ if (!is_delete)
+ {
+ ap->addr_len = address_length;
+ ap->sw_if_index = sw_if_index;
+ ap->net.as_u32 =
+ ap->addr.as_u32 & ip4_main.fib_masks[ap->addr_len];
+
+ nat_log_debug (
+ "pool addr %U binds to -> sw_if_idx: %u net: %U/%u",
+ format_ip4_address, &ap->addr, ap->sw_if_index,
+ format_ip4_address, &ap->net, ap->addr_len);
+ }
+ else
+ {
+ ap->addr_len = ~0;
+ }
+ break;
+ }
+ }
+ return;
+ }
}
- return;
+ arp = sm->addr_to_resolve + i;
-match:
if (!is_delete)
{
- /* Don't trip over lease renewal, static config */
- for (j = 0; j < vec_len (addresses); j++)
- if (addresses[j].addr.as_u32 == address->as_u32)
+ if (arp->is_resolved)
+ {
return;
+ }
- (void) snat_add_address (sm, address, ~0, twice_nat);
- /* Scan static map resolution vector */
- for (j = 0; j < vec_len (sm->to_resolve); j++)
+ rv = nat44_ed_add_address (address, ~0, arp->is_twice_nat);
+ if (0 == rv)
{
- rp = sm->to_resolve + j;
- if (rp->addr_only)
- continue;
- /* On this interface? */
- if (rp->sw_if_index == sw_if_index)
- {
-
- // TODO: remove if not needed (handled by function)
- /* Indetity mapping? */
- if (rp->l_addr.as_u32 == 0)
- l_addr.as_u32 = address[0].as_u32;
- else
- l_addr.as_u32 = rp->l_addr.as_u32;
-
- /* Add the static mapping */
- rv = nat44_ed_add_static_mapping (
- l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
- rp->vrf_id, ~0, rp->flags, rp->pool_addr, rp->tag);
- if (rv)
- {
- nat_elog_notice_X1 (sm, "add_static_mapping returned %d",
- "i4", rv);
- }
- }
+ arp->is_resolved = 1;
}
- return;
}
else
{
- (void) snat_del_address (sm, address[0], 1, twice_nat);
- return;
+ if (!arp->is_resolved)
+ {
+ return;
+ }
+
+ rv = nat44_ed_del_address (address[0], arp->is_twice_nat);
+ if (0 == rv)
+ {
+ arp->is_resolved = 0;
+ }
}
}
int
-snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del,
- u8 twice_nat)
+nat44_ed_add_interface_address (u32 sw_if_index, u8 twice_nat)
{
+ snat_main_t *sm = &snat_main;
ip4_main_t *ip4_main = sm->ip4_main;
ip4_address_t *first_int_addr;
- snat_static_map_resolve_t *rp;
- u32 *indices_to_delete = 0;
- int i, j;
- u32 *auto_add_sw_if_indices =
- twice_nat ? sm->
- auto_add_sw_if_indices_twice_nat : sm->auto_add_sw_if_indices;
+ snat_address_resolve_t *ap;
+ int rv;
- first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0 /* just want the address */
- );
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- for (i = 0; i < vec_len (auto_add_sw_if_indices); i++)
+ if (!nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, 0))
{
- if (auto_add_sw_if_indices[i] == sw_if_index)
- {
- if (is_del)
- {
- /* if have address remove it */
- if (first_int_addr)
- (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat);
- else
- {
- for (j = 0; j < vec_len (sm->to_resolve); j++)
- {
- rp = sm->to_resolve + j;
- if (rp->sw_if_index == sw_if_index)
- vec_add1 (indices_to_delete, j);
- }
- if (vec_len (indices_to_delete))
- {
- for (j = vec_len (indices_to_delete) - 1; j >= 0; j--)
- vec_del1 (sm->to_resolve, j);
- vec_free (indices_to_delete);
- }
- }
- if (twice_nat)
- vec_del1 (sm->auto_add_sw_if_indices_twice_nat, i);
- else
- vec_del1 (sm->auto_add_sw_if_indices, i);
- }
- else
- return VNET_API_ERROR_VALUE_EXIST;
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
- return 0;
+ vec_add2 (sm->addr_to_resolve, ap, 1);
+ ap->sw_if_index = sw_if_index;
+ ap->is_twice_nat = twice_nat;
+ ap->is_resolved = 0;
+
+ first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0);
+ if (first_int_addr)
+ {
+ rv = nat44_ed_add_address (first_int_addr, ~0, twice_nat);
+ if (0 != rv)
+ {
+ nat44_ed_del_addr_resolve_record (sw_if_index, twice_nat);
+ return rv;
}
+ ap->is_resolved = 1;
}
- if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ return 0;
+}
- /* add to the auto-address list */
- if (twice_nat)
- vec_add1 (sm->auto_add_sw_if_indices_twice_nat, sw_if_index);
- else
- vec_add1 (sm->auto_add_sw_if_indices, sw_if_index);
+int
+nat44_ed_del_interface_address (u32 sw_if_index, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ ip4_main_t *ip4_main = sm->ip4_main;
+ ip4_address_t *first_int_addr;
- /* If the address is already bound - or static - add it now */
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ if (nat44_ed_del_addr_resolve_record (sw_if_index, twice_nat))
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0);
if (first_int_addr)
- (void) snat_add_address (sm, first_int_addr, ~0, twice_nat);
+ {
+ return nat44_ed_del_address (first_int_addr[0], twice_nat);
+ }
return 0;
}
int
-nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+nat44_ed_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
+ ip4_address_t *eh_addr, u16 eh_port, u8 proto,
u32 vrf_id, int is_in)
{
ip4_header_t ip;
clib_bihash_kv_16_8_t kv, value;
- u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
+ u32 fib_index;
snat_session_t *s;
snat_main_per_thread_data_t *tsm;
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32;
if (sm->num_workers > 1)
tsm = vec_elt_at_index (
@@ -3481,7 +3630,8 @@ nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
else
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- init_ed_k (&kv, *addr, port, *eh_addr, eh_port, fib_index, proto);
+ init_ed_k (&kv, addr->as_u32, port, eh_addr->as_u32, eh_port, fib_index,
+ proto);
if (clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
{
return VNET_API_ERROR_NO_SUCH_ENTRY;
@@ -3490,7 +3640,7 @@ nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
if (pool_is_free_index (tsm->sessions, ed_value_get_session_index (&value)))
return VNET_API_ERROR_UNSPECIFIED;
s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (&value));
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
return 0;
}
@@ -3596,13 +3746,13 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
static_always_inline void
nat_6t_flow_ip4_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
- nat_6t_flow_t *f, nat_protocol_t proto,
+ nat_6t_flow_t *f, ip_protocol_t proto,
int is_icmp_inner_ip4, int skip_saddr_rewrite)
{
udp_header_t *udp = ip4_next_header (ip);
tcp_header_t *tcp = (tcp_header_t *) udp;
- if ((NAT_PROTOCOL_TCP == proto || NAT_PROTOCOL_UDP == proto) &&
+ if ((IP_PROTOCOL_TCP == proto || IP_PROTOCOL_UDP == proto) &&
!vnet_buffer (b)->ip.reass.is_non_first_fragment)
{
if (!is_icmp_inner_ip4)
@@ -3620,7 +3770,7 @@ nat_6t_flow_ip4_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
udp->dst_port = f->rewrite.sport;
}
- if (NAT_PROTOCOL_TCP == proto)
+ if (IP_PROTOCOL_TCP == proto)
{
ip_csum_t tcp_sum = tcp->checksum;
tcp_sum = ip_csum_sub_even (tcp_sum, f->l3_csum_delta);
@@ -3628,7 +3778,7 @@ nat_6t_flow_ip4_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
mss_clamping (sm->mss_clamping, tcp, &tcp_sum);
tcp->checksum = ip_csum_fold (tcp_sum);
}
- else if (proto == NAT_PROTOCOL_UDP && udp->checksum)
+ else if (IP_PROTOCOL_UDP == proto && udp->checksum)
{
ip_csum_t udp_sum = udp->checksum;
udp_sum = ip_csum_sub_even (udp_sum, f->l3_csum_delta);
@@ -3685,7 +3835,7 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
return NAT_ED_TRNSL_ERR_TRANSLATION_FAILED;
icmp46_header_t *icmp = ip4_next_header (ip);
- icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1);
+ nat_icmp_echo_header_t *echo = (nat_icmp_echo_header_t *) (icmp + 1);
if ((!vnet_buffer (b)->ip.reass.is_non_first_fragment))
{
@@ -3694,15 +3844,6 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
return NAT_ED_TRNSL_ERR_PACKET_TRUNCATED;
}
- ssize_t icmp_offset = (u8 *) icmp - (u8 *) vlib_buffer_get_current (b);
- ip_csum_t sum =
- ip_incremental_checksum (0, icmp, b->current_length - icmp_offset);
- sum = (u16) ~ip_csum_fold (sum);
- if (sum != 0)
- {
- return NAT_ED_TRNSL_ERR_INVALID_CSUM;
- }
-
if (!icmp_type_is_error_message (icmp->type))
{
if ((f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE) &&
@@ -3710,7 +3851,7 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
{
ip_csum_t sum = icmp->checksum;
sum = ip_csum_update (sum, echo->identifier, f->rewrite.icmp_id,
- icmp_echo_header_t,
+ nat_icmp_echo_header_t,
identifier /* changed member */);
echo->identifier = f->rewrite.icmp_id;
icmp->checksum = ip_csum_fold (sum);
@@ -3718,6 +3859,15 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
}
else
{
+ ip_csum_t sum = ip_incremental_checksum (
+ 0, icmp,
+ clib_net_to_host_u16 (ip->length) - ip4_header_bytes (ip));
+ sum = (u16) ~ip_csum_fold (sum);
+ if (sum != 0)
+ {
+ return NAT_ED_TRNSL_ERR_INVALID_CSUM;
+ }
+
// errors are not fragmented
ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1);
@@ -3726,8 +3876,7 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
return NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT;
}
- nat_protocol_t inner_proto =
- ip_proto_to_nat_proto (inner_ip->protocol);
+ ip_protocol_t inner_proto = inner_ip->protocol;
ip_csum_t old_icmp_sum = icmp->checksum;
ip_csum_t old_inner_ip_sum = inner_ip->checksum;
@@ -3739,7 +3888,7 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
switch (inner_proto)
{
- case NAT_PROTOCOL_UDP:
+ case IP_PROTOCOL_UDP:
udp = (udp_header_t *) (inner_ip + 1);
if (!it_fits (vm, b, udp, sizeof (*udp)))
{
@@ -3760,7 +3909,7 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
new_icmp_sum = ip_csum_fold (new_icmp_sum);
icmp->checksum = new_icmp_sum;
break;
- case NAT_PROTOCOL_TCP:
+ case IP_PROTOCOL_TCP:
tcp = (tcp_header_t *) (inner_ip + 1);
if (!it_fits (vm, b, tcp, sizeof (*tcp)))
{
@@ -3781,7 +3930,10 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
new_icmp_sum = ip_csum_fold (new_icmp_sum);
icmp->checksum = new_icmp_sum;
break;
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
+ nat_6t_flow_ip4_translate (sm, b, inner_ip, f, inner_proto,
+ 1 /* is_icmp_inner_ip4 */,
+ 0 /* skip_saddr_rewrite */);
if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
{
icmp46_header_t *inner_icmp = ip4_next_header (inner_ip);
@@ -3789,19 +3941,21 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
{
return NAT_ED_TRNSL_ERR_PACKET_TRUNCATED;
}
- icmp_echo_header_t *inner_echo =
- (icmp_echo_header_t *) (inner_icmp + 1);
+ nat_icmp_echo_header_t *inner_echo =
+ (nat_icmp_echo_header_t *) (inner_icmp + 1);
if (f->rewrite.icmp_id != inner_echo->identifier)
{
ip_csum_t sum = icmp->checksum;
- sum = ip_csum_update (
- sum, inner_echo->identifier, f->rewrite.icmp_id,
- icmp_echo_header_t, identifier /* changed member */);
+ sum = ip_csum_update (sum, inner_echo->identifier,
+ f->rewrite.icmp_id,
+ nat_icmp_echo_header_t,
+ identifier /* changed member */);
icmp->checksum = ip_csum_fold (sum);
ip_csum_t inner_sum = inner_icmp->checksum;
inner_sum = ip_csum_update (
sum, inner_echo->identifier, f->rewrite.icmp_id,
- icmp_echo_header_t, identifier /* changed member */);
+ nat_icmp_echo_header_t,
+ identifier /* changed member */);
inner_icmp->checksum = ip_csum_fold (inner_sum);
inner_echo->identifier = f->rewrite.icmp_id;
}
@@ -3820,7 +3974,7 @@ nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
static_always_inline nat_translation_error_e
nat_6t_flow_buf_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
ip4_header_t *ip, nat_6t_flow_t *f,
- nat_protocol_t proto, int is_output_feature,
+ ip_protocol_t proto, int is_output_feature,
int is_i2o)
{
if (!is_output_feature && f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
@@ -3828,7 +3982,7 @@ nat_6t_flow_buf_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
vnet_buffer (b)->sw_if_index[VLIB_TX] = f->rewrite.fib_index;
}
- if (NAT_PROTOCOL_ICMP == proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
if (ip->src_address.as_u32 != f->rewrite.saddr.as_u32)
{
@@ -3856,7 +4010,7 @@ nat_6t_flow_buf_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
nat_translation_error_e
nat_6t_flow_buf_translate_i2o (vlib_main_t *vm, snat_main_t *sm,
vlib_buffer_t *b, ip4_header_t *ip,
- nat_6t_flow_t *f, nat_protocol_t proto,
+ nat_6t_flow_t *f, ip_protocol_t proto,
int is_output_feature)
{
return nat_6t_flow_buf_translate (vm, sm, b, ip, f, proto, is_output_feature,
@@ -3866,116 +4020,130 @@ nat_6t_flow_buf_translate_i2o (vlib_main_t *vm, snat_main_t *sm,
nat_translation_error_e
nat_6t_flow_buf_translate_o2i (vlib_main_t *vm, snat_main_t *sm,
vlib_buffer_t *b, ip4_header_t *ip,
- nat_6t_flow_t *f, nat_protocol_t proto,
+ nat_6t_flow_t *f, ip_protocol_t proto,
int is_output_feature)
{
return nat_6t_flow_buf_translate (vm, sm, b, ip, f, proto, is_output_feature,
0 /* is_i2o */);
}
-u8 *
-format_nat_6t (u8 *s, va_list *args)
+static_always_inline void
+nat_syslog_nat44_sess (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto, u8 is_add,
+ u8 is_twicenat)
{
- nat_6t_t *t = va_arg (*args, nat_6t_t *);
+ syslog_msg_t syslog_msg;
+ fib_table_t *fib;
- s = format (s, "saddr %U sport %u daddr %U dport %u proto %U fib_idx %u",
- format_ip4_address, t->saddr.as_u8,
- clib_net_to_host_u16 (t->sport), format_ip4_address,
- t->daddr.as_u8, clib_net_to_host_u16 (t->dport),
- format_ip_protocol, t->proto, t->fib_index);
- return s;
+ if (!syslog_is_enabled ())
+ return;
+
+ if (syslog_severity_filter_block (SADD_SDEL_SEVERITY))
+ return;
+
+ fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4);
+
+ syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME,
+ is_add ? SADD_MSGID : SDEL_MSGID);
+
+ syslog_msg_sd_init (&syslog_msg, NSESS_SDID);
+ syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix);
+ syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d",
+ fib->ft_table_id);
+ syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4);
+ syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, isaddr);
+ syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (isport));
+ syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4);
+ syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, xsaddr);
+ syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (xsport));
+ syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", proto);
+ syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, xdaddr);
+ syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (xdport));
+ if (is_twicenat)
+ {
+ syslog_msg_add_sd_param (&syslog_msg, IDADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, idaddr);
+ syslog_msg_add_sd_param (&syslog_msg, IDPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (idport));
+ }
+
+ syslog_msg_send (&syslog_msg);
}
-u8 *
-format_nat_ed_translation_error (u8 *s, va_list *args)
+void
+nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat)
{
- nat_translation_error_e e = va_arg (*args, nat_translation_error_e);
-
- switch (e)
- {
- case NAT_ED_TRNSL_ERR_SUCCESS:
- s = format (s, "success");
- break;
- case NAT_ED_TRNSL_ERR_TRANSLATION_FAILED:
- s = format (s, "translation-failed");
- break;
- case NAT_ED_TRNSL_ERR_FLOW_MISMATCH:
- s = format (s, "flow-mismatch");
- break;
- case NAT_ED_TRNSL_ERR_PACKET_TRUNCATED:
- s = format (s, "packet-truncated");
- break;
- case NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT:
- s = format (s, "inner-ip-corrupted");
- break;
- case NAT_ED_TRNSL_ERR_INVALID_CSUM:
- s = format (s, "invalid-checksum");
- break;
- }
- return s;
+ nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
+ idaddr, idport, xdaddr, xdport, proto, 1,
+ is_twicenat);
}
-u8 *
-format_nat_6t_flow (u8 *s, va_list *args)
+void
+nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat)
+{
+ nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
+ idaddr, idport, xdaddr, xdport, proto, 0,
+ is_twicenat);
+}
+__clib_export void
+nat44_original_dst_lookup (ip4_address_t *i2o_src, u16 i2o_src_port,
+ ip4_address_t *i2o_dst, u16 i2o_dst_port,
+ ip_protocol_t proto, u32 *original_dst,
+ u16 *original_dst_port)
{
- nat_6t_flow_t *f = va_arg (*args, nat_6t_flow_t *);
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+ u32 fib_index = 0;
+ snat_session_t *s;
+ ip4_header_t ip;
- s = format (s, "match: %U ", format_nat_6t, &f->match);
- int r = 0;
- if (f->ops & NAT_FLOW_OP_SADDR_REWRITE)
- {
- s = format (s, "rewrite: saddr %U ", format_ip4_address,
- f->rewrite.saddr.as_u8);
- r = 1;
- }
- if (f->ops & NAT_FLOW_OP_SPORT_REWRITE)
- {
- if (!r)
- {
- s = format (s, "rewrite: ");
- r = 1;
- }
- s = format (s, "sport %u ", clib_net_to_host_u16 (f->rewrite.sport));
- }
- if (f->ops & NAT_FLOW_OP_DADDR_REWRITE)
+ ip.src_address.as_u32 = i2o_src->as_u32;
+ fib_index = fib_table_find (FIB_PROTOCOL_IP4, 0);
+
+ if (sm->num_workers > 1)
{
- if (!r)
- {
- s = format (s, "rewrite: ");
- r = 1;
- }
- s = format (s, "daddr %U ", format_ip4_address, f->rewrite.daddr.as_u8);
+ tsm = vec_elt_at_index (
+ sm->per_thread_data,
+ nat44_ed_get_in2out_worker_index (0, &ip, fib_index, 0));
}
- if (f->ops & NAT_FLOW_OP_DPORT_REWRITE)
+ else
{
- if (!r)
- {
- s = format (s, "rewrite: ");
- r = 1;
- }
- s = format (s, "dport %u ", clib_net_to_host_u16 (f->rewrite.dport));
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
}
- if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
+
+ /* query */
+ clib_bihash_kv_16_8_t kv = { 0 }, value;
+ init_ed_k (&kv, i2o_src->as_u32, i2o_src_port, i2o_dst->as_u32, i2o_dst_port,
+ fib_index, proto);
+ if (tsm->sessions == NULL ||
+ clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
{
- if (!r)
- {
- s = format (s, "rewrite: ");
- r = 1;
- }
- s = format (s, "icmp-id %u ", clib_net_to_host_u16 (f->rewrite.icmp_id));
+ return;
}
- if (f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
+ s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (&value));
+ if (s)
{
- if (!r)
- {
- s = format (s, "rewrite: ");
- r = 1;
- }
- s = format (s, "txfib %u ", f->rewrite.fib_index);
+ *original_dst = s->i2o.rewrite.saddr.as_u32;
+ *original_dst_port = s->i2o.rewrite.sport;
}
- return s;
+ return;
}
-
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/plugins/nat/nat44-ed/nat44_ed.h b/src/plugins/nat/nat44-ed/nat44_ed.h
index b74b46f81b7..706511475cf 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed.h
+++ b/src/plugins/nat/nat44-ed/nat44_ed.h
@@ -12,10 +12,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file nat.c
- * NAT plugin global declarations
- */
+
#ifndef __included_nat44_ed_h__
#define __included_nat44_ed_h__
@@ -39,6 +36,16 @@
/* default number of worker handoff frame queue elements */
#define NAT_FQ_NELTS_DEFAULT 64
+/* number of attempts to get a port for ED overloading algorithm, if rolling
+ * a dice this many times doesn't produce a free port, it's treated
+ * as if there were no free ports available to conserve resources */
+#define ED_PORT_ALLOC_ATTEMPTS (10)
+
+/* system ports range is 0-1023, first user port is 1024 per
+ * https://www.rfc-editor.org/rfc/rfc6335#section-6
+ */
+#define ED_USER_PORT_OFFSET 1024
+
/* NAT buffer flags */
#define SNAT_FLAG_HAIRPINNING (1 << 0)
@@ -58,16 +65,9 @@ typedef enum nat44_config_flags_t_
typedef struct
{
- /* nat44 plugin features */
- u8 static_mapping_only;
- u8 connection_tracking;
-
u32 inside_vrf;
u32 outside_vrf;
-
- /* maximum number of sessions */
u32 sessions;
-
} nat44_config_t;
typedef enum
@@ -91,46 +91,12 @@ typedef struct
u32 arc_next_index;
} nat_pre_trace_t;
-/* External address and port allocation modes */
-#define foreach_nat_addr_and_port_alloc_alg \
- _(0, DEFAULT, "default") \
- _(1, MAPE, "map-e") \
- _(2, RANGE, "port-range")
-
-typedef enum
-{
-#define _(v, N, s) NAT_ADDR_AND_PORT_ALLOC_ALG_##N = v,
- foreach_nat_addr_and_port_alloc_alg
-#undef _
-} nat_addr_and_port_alloc_alg_t;
-
-/* Session state */
-#define foreach_snat_session_state \
- _(0, UNKNOWN, "unknown") \
- _(1, UDP_ACTIVE, "udp-active") \
- _(2, TCP_SYN_SENT, "tcp-syn-sent") \
- _(3, TCP_ESTABLISHED, "tcp-established") \
- _(4, TCP_FIN_WAIT, "tcp-fin-wait") \
- _(5, TCP_CLOSE_WAIT, "tcp-close-wait") \
- _(6, TCP_CLOSING, "tcp-closing") \
- _(7, TCP_LAST_ACK, "tcp-last-ack") \
- _(8, TCP_CLOSED, "tcp-closed") \
- _(9, ICMP_ACTIVE, "icmp-active")
-
-typedef enum
-{
-#define _(v, N, s) SNAT_SESSION_##N = v,
- foreach_snat_session_state
-#undef _
-} snat_session_state_t;
-
#define foreach_nat_in2out_ed_error \
_ (UNSUPPORTED_PROTOCOL, "unsupported protocol") \
_ (OUT_OF_PORTS, "out of ports") \
_ (BAD_ICMP_TYPE, "unsupported ICMP type") \
_ (MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
_ (NON_SYN, "non-SYN packet try to create session") \
- _ (TCP_CLOSED, "drops due to TCP in transitory timeout") \
_ (TRNSL_FAILED, "couldn't translate packet")
typedef enum
@@ -160,19 +126,42 @@ typedef enum
NAT_OUT2IN_ED_N_ERROR,
} nat_out2in_ed_error_t;
+typedef enum
+{
+ NAT44_ED_TCP_FLAG_FIN = 0,
+ NAT44_ED_TCP_FLAG_SYN,
+ NAT44_ED_TCP_FLAG_RST,
+ NAT44_ED_TCP_FLAG_ACK,
+ NAT44_ED_TCP_N_FLAG,
+} nat44_ed_tcp_flag_e;
+
+typedef enum
+{
+ NAT44_ED_DIR_I2O = 0,
+ NAT44_ED_DIR_O2I,
+ NAT44_ED_N_DIR,
+} nat44_ed_dir_e;
/* Endpoint dependent TCP session state */
-#define NAT44_SES_I2O_FIN 1
-#define NAT44_SES_O2I_FIN 2
-#define NAT44_SES_I2O_FIN_ACK 4
-#define NAT44_SES_O2I_FIN_ACK 8
-#define NAT44_SES_I2O_SYN 16
-#define NAT44_SES_O2I_SYN 32
-#define NAT44_SES_RST 64
+typedef enum
+{
+ NAT44_ED_TCP_STATE_CLOSED = 0,
+ NAT44_ED_TCP_STATE_ESTABLISHED,
+ NAT44_ED_TCP_STATE_CLOSING,
+ NAT44_ED_TCP_N_STATE,
+} nat44_ed_tcp_state_e;
+
+format_function_t format_ed_session_kvp;
+format_function_t format_snat_session;
+format_function_t format_snat_static_mapping;
+format_function_t format_snat_static_map_to_resolve;
+format_function_t format_nat_ed_translation_error;
+format_function_t format_nat_6t_flow;
+format_function_t format_nat_6t;
+format_function_t format_nat44_ed_tcp_state;
/* Session flags */
#define SNAT_SESSION_FLAG_STATIC_MAPPING (1 << 0)
-#define SNAT_SESSION_FLAG_UNKNOWN_PROTO (1 << 1)
#define SNAT_SESSION_FLAG_LOAD_BALANCING (1 << 2)
#define SNAT_SESSION_FLAG_TWICE_NAT (1 << 3)
#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT (1 << 4)
@@ -308,7 +297,7 @@ typedef CLIB_PACKED(struct
u16 port;
} in2out;
- nat_protocol_t nat_proto;
+ ip_protocol_t proto;
nat_6t_flow_t i2o;
nat_6t_flow_t o2i;
@@ -341,10 +330,8 @@ typedef CLIB_PACKED(struct
u16 ext_host_nat_port;
/* TCP session state */
- u8 state;
- u32 i2o_fin_seq;
- u32 o2i_fin_seq;
- u64 tcp_closed_timestamp;
+ u8 tcp_flags[NAT44_ED_N_DIR];
+ nat44_ed_tcp_state_e tcp_state;
/* per vrf sessions index */
u32 per_vrf_sessions_index;
@@ -355,29 +342,14 @@ typedef CLIB_PACKED(struct
typedef struct
{
ip4_address_t addr;
+ ip4_address_t net;
+ u32 sw_if_index;
u32 fib_index;
-#define _(N, i, n, s) \
- u32 busy_##n##_ports; \
- u32 * busy_##n##_ports_per_thread; \
- u32 busy_##n##_port_refcounts[65535];
- foreach_nat_protocol
-#undef _
+ u32 addr_len;
} snat_address_t;
typedef struct
{
- u32 fib_index;
- u32 ref_count;
-} nat_fib_t;
-
-typedef struct
-{
- u32 fib_index;
- u32 refcount;
-} nat_outside_fib_t;
-
-typedef struct
-{
/* backend IP address */
ip4_address_t addr;
/* backend port number */
@@ -412,7 +384,7 @@ typedef enum
typedef struct
{
- /* prefered pool address */
+ /* preferred pool address */
ip4_address_t pool_addr;
/* local IP address */
ip4_address_t local_addr;
@@ -426,7 +398,7 @@ typedef struct
u32 vrf_id;
u32 fib_index;
/* protocol */
- nat_protocol_t proto;
+ ip_protocol_t proto;
/* 0 = disabled, otherwise client IP affinity sticky time in seconds */
u32 affinity;
/* worker threads used by backends/local host */
@@ -449,21 +421,31 @@ typedef struct
typedef struct
{
+ u8 is_resolved;
ip4_address_t l_addr;
ip4_address_t pool_addr;
u16 l_port;
u16 e_port;
u32 sw_if_index;
u32 vrf_id;
- nat_protocol_t proto;
+ ip_protocol_t proto;
u32 flags;
- int addr_only;
- int twice_nat;
- int out2in_only;
- int identity_nat;
- int exact;
u8 *tag;
-} snat_static_map_resolve_t;
+} snat_static_mapping_resolve_t;
+
+typedef struct
+{
+ u8 is_resolved;
+ u8 is_twice_nat;
+ u32 sw_if_index;
+} snat_address_resolve_t;
+
+typedef struct
+{
+ u32 count;
+ u32 sw_if_index;
+ ip4_address_t addr;
+} snat_fib_entry_reg_t;
typedef struct
{
@@ -487,7 +469,7 @@ typedef struct
/* real thread index */
u32 thread_index;
- per_vrf_sessions_t *per_vrf_sessions_vec;
+ per_vrf_sessions_t *per_vrf_sessions_pool;
} snat_main_per_thread_data_t;
@@ -498,17 +480,24 @@ u32 nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
u32 nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip,
u32 rx_fib_index, u8 is_output);
-/* Return worker thread index for given packet */
-/* NAT address and port allocation function */
-typedef int (nat_alloc_out_addr_and_port_function_t) (snat_address_t *
- addresses,
- u32 fib_index,
- u32 thread_index,
- nat_protocol_t proto,
- ip4_address_t * addr,
- u16 * port,
- u16 port_per_thread,
- u32 snat_thread_index);
+typedef struct nat_fib_s
+{
+ u32 fib_index;
+ u32 ref_count;
+} nat_fib_t;
+
+typedef struct vrf_route_s
+{
+ u32 vrf_id;
+ u32 fib_index;
+} vrf_route_t;
+
+typedef struct vrf_table_s
+{
+ u32 table_vrf_id;
+ u32 table_fib_index;
+ vrf_route_t *routes;
+} vrf_table_t;
typedef struct snat_main_s
{
@@ -521,12 +510,6 @@ typedef struct snat_main_s
/* Per thread data */
snat_main_per_thread_data_t *per_thread_data;
- /* Find a static mapping by local */
- clib_bihash_8_8_t static_mapping_by_local;
-
- /* Find a static mapping by external */
- clib_bihash_8_8_t static_mapping_by_external;
-
/* Static mapping pool */
snat_static_mapping_t *static_mappings;
@@ -537,39 +520,40 @@ typedef struct snat_main_s
/* Endpoint dependent lookup table */
clib_bihash_16_8_t flow_hash;
+ // vector of fibs
+ nat_fib_t *fibs;
+
+ u32 inside_vrf_id;
+ u32 inside_fib_index;
+
+ u32 outside_vrf_id;
+ u32 outside_fib_index;
+
+ // vector of outside fibs
+ nat_fib_t *outside_fibs;
+
+ // VRF routing table for dynamic sessions
+ vrf_table_t *vrf_tables;
+
/* Interface pool */
snat_interface_t *interfaces;
snat_interface_t *output_feature_interfaces;
+ // broken api backward compatibility
+ snat_interface_t *output_feature_dummy_interfaces;
/* Vector of outside addresses */
snat_address_t *addresses;
- /* Address and port allocation function */
- nat_alloc_out_addr_and_port_function_t *alloc_addr_and_port;
- /* Address and port allocation type */
- nat_addr_and_port_alloc_alg_t addr_and_port_alloc_alg;
- /* Port set parameters (MAP-E) */
- u8 psid_offset;
- u8 psid_length;
- u16 psid;
- /* Port range parameters */
- u16 start_port;
- u16 end_port;
-
- /* vector of fibs */
- nat_fib_t *fibs;
-
- /* vector of outside fibs */
- nat_outside_fib_t *outside_fibs;
-
/* Vector of twice NAT addresses for external hosts */
snat_address_t *twice_nat_addresses;
- /* sw_if_indices whose intfc addresses should be auto-added */
- u32 *auto_add_sw_if_indices;
- u32 *auto_add_sw_if_indices_twice_nat;
+ /* first interface address should be auto-added */
+ snat_address_resolve_t *addr_to_resolve;
+
+ /* vector of fib entries */
+ snat_fib_entry_reg_t *fib_entry_reg;
/* vector of interface address static mappings to resolve. */
- snat_static_map_resolve_t *to_resolve;
+ snat_static_mapping_resolve_t *sm_to_resolve;
/* Randomize port allocation order */
u32 random_seed;
@@ -579,20 +563,11 @@ typedef struct snat_main_s
u32 fq_in2out_output_index;
u32 fq_out2in_index;
- u32 out2in_node_index;
- u32 in2out_node_index;
- u32 in2out_output_node_index;
-
nat44_config_t rconfig;
- //nat44_config_t cconfig;
/* If forwarding is enabled */
u8 forwarding_enabled;
- /* static mapping config */
- u8 static_mapping_only;
- u8 static_mapping_connection_tracking;
-
/* Is translation memory size calculated or user defined */
u8 translation_memory_size_set;
@@ -600,11 +575,6 @@ typedef struct snat_main_s
u32 max_translations_per_thread;
u32 *max_translations_per_fib;
- u32 outside_vrf_id;
- u32 outside_fib_index;
- u32 inside_vrf_id;
- u32 inside_fib_index;
-
nat_timeouts_t timeouts;
/* TCP MSS clamping */
@@ -657,24 +627,27 @@ typedef struct snat_main_s
u8 log_level;
/* convenience */
- api_main_t *api_main;
ip4_main_t *ip4_main;
- ip_lookup_main_t *ip4_lookup_main;
fib_source_t fib_src_hi;
fib_source_t fib_src_low;
- /* pat - dynamic mapping enabled or conneciton tracking */
- u8 pat;
-
/* number of worker handoff frame queue elements */
u32 frame_queue_nelts;
/* nat44 plugin enabled */
u8 enabled;
- vnet_main_t *vnet_main;
-
+ /* TCP session state machine table:
+ * first dimension is possible states
+ * second dimension is direction (in2out/out2in)
+ * third dimension is TCP flag (SYN, RST, FIN)
+ *
+ * value is next state to change to
+ */
+ nat44_ed_tcp_state_e tcp_state_change_table[NAT44_ED_TCP_N_STATE]
+ [NAT44_ED_N_DIR]
+ [NAT44_ED_TCP_N_FLAG];
} snat_main_t;
typedef struct
@@ -689,106 +662,109 @@ typedef struct
uword *cached_presence_by_ip4_address;
} snat_runtime_t;
+/*
+ * Why is this here? Because we don't need to touch this layer to
+ * simply reply to an icmp. We need to change id to a unique
+ * value to NAT an echo request/reply.
+ */
+
extern snat_main_t snat_main;
-// nat pre ed next_node feature classification
extern vlib_node_registration_t nat_default_node;
extern vlib_node_registration_t nat_pre_in2out_node;
extern vlib_node_registration_t nat_pre_out2in_node;
-extern vlib_node_registration_t snat_in2out_node;
-extern vlib_node_registration_t snat_in2out_output_node;
-extern vlib_node_registration_t snat_out2in_node;
-extern vlib_node_registration_t snat_in2out_worker_handoff_node;
-extern vlib_node_registration_t snat_in2out_output_worker_handoff_node;
-extern vlib_node_registration_t snat_out2in_worker_handoff_node;
extern vlib_node_registration_t nat44_ed_in2out_node;
extern vlib_node_registration_t nat44_ed_in2out_output_node;
extern vlib_node_registration_t nat44_ed_out2in_node;
-extern fib_source_t nat_fib_src_hi;
-extern fib_source_t nat_fib_src_low;
-
-/* format functions */
-format_function_t format_snat_static_mapping;
-format_function_t format_snat_static_map_to_resolve;
-format_function_t format_snat_session;
-format_function_t format_snat_key;
-format_function_t format_static_mapping_key;
-format_function_t format_nat_protocol;
-format_function_t format_nat_addr_and_port_alloc_alg;
-/* unformat functions */
-unformat_function_t unformat_nat_protocol;
+extern vlib_node_registration_t snat_in2out_worker_handoff_node;
+extern vlib_node_registration_t snat_in2out_output_worker_handoff_node;
+extern vlib_node_registration_t snat_out2in_worker_handoff_node;
/** \brief Check if SNAT session is created from static mapping.
@param s SNAT session
- @return 1 if SNAT session is created from static mapping otherwise 0
-*/
-#define snat_is_session_static(s) (s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING)
-
-/** \brief Check if SNAT session for unknown protocol.
- @param s SNAT session
- @return 1 if SNAT session for unknown protocol otherwise 0
+ @return true if SNAT session is created from static mapping otherwise 0
*/
-#define snat_is_unk_proto_session(s) (s->flags & SNAT_SESSION_FLAG_UNKNOWN_PROTO)
+always_inline bool
+nat44_ed_is_session_static (snat_session_t *s)
+{
+ return s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING;
+}
/** \brief Check if NAT session is twice NAT.
@param s NAT session
- @return 1 if NAT session is twice NAT
+ @return true if NAT session is twice NAT
*/
-#define is_twice_nat_session(s) (s->flags & SNAT_SESSION_FLAG_TWICE_NAT)
+always_inline bool
+nat44_ed_is_twice_nat_session (snat_session_t *s)
+{
+ return s->flags & SNAT_SESSION_FLAG_TWICE_NAT;
+}
/** \brief Check if NAT session is load-balancing.
@param s NAT session
- @return 1 if NAT session is load-balancing
+ @return true if NAT session is load-balancing
*/
-#define is_lb_session(s) (s->flags & SNAT_SESSION_FLAG_LOAD_BALANCING)
+always_inline bool
+nat44_ed_is_lb_session (snat_session_t *s)
+{
+ return s->flags & SNAT_SESSION_FLAG_LOAD_BALANCING;
+}
/** \brief Check if NAT session is forwarding bypass.
@param s NAT session
- @return 1 if NAT session is load-balancing
-*/
-#define is_fwd_bypass_session(s) (s->flags & SNAT_SESSION_FLAG_FWD_BYPASS)
-
-/** \brief Check if NAT session is endpoint dependent.
- @param s NAT session
- @return 1 if NAT session is endpoint dependent
+ @return true if NAT session is load-balancing
*/
-#define is_ed_session(s) (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT)
+always_inline bool
+na44_ed_is_fwd_bypass_session (snat_session_t *s)
+{
+ return s->flags & SNAT_SESSION_FLAG_FWD_BYPASS;
+}
/** \brief Check if NAT session has affinity record.
@param s NAT session
- @return 1 if NAT session has affinity record
+ @return true if NAT session has affinity record
*/
-#define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY)
+always_inline bool
+nat44_ed_is_affinity_session (snat_session_t *s)
+{
+ return s->flags & SNAT_SESSION_FLAG_AFFINITY;
+}
/** \brief Check if exact pool address should be used.
@param s SNAT session
- @return 1 if exact pool address or 0
+ @return true if exact pool address
*/
-#define is_exact_address_session(s) (s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS)
+always_inline bool
+nat44_ed_is_exact_address_session (snat_session_t *s)
+{
+ return s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS;
+}
/** \brief Check if NAT interface is inside.
@param i NAT interface
- @return 1 if inside interface
+ @return true if inside interface
*/
-#define nat_interface_is_inside(i) i->flags & NAT_INTERFACE_FLAG_IS_INSIDE
+always_inline bool
+nat44_ed_is_interface_inside (snat_interface_t *i)
+{
+ return i->flags & NAT_INTERFACE_FLAG_IS_INSIDE;
+}
/** \brief Check if NAT interface is outside.
@param i NAT interface
- @return 1 if outside interface
-*/
-#define nat_interface_is_outside(i) i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE
-
-/** \brief Check if NAT44 endpoint-dependent TCP session is closed.
- @param s NAT session
- @return 1 if session is closed
+ @return true if outside interface
*/
-#define nat44_is_ses_closed(s) s->state == 0xf
+always_inline bool
+nat44_ed_is_interface_outside (snat_interface_t *i)
+{
+ return i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE;
+}
/** \brief Check if client initiating TCP connection (received SYN from client)
@param t TCP header
- @return 1 if client initiating TCP connection
+ @return true if client initiating TCP connection
*/
always_inline bool
tcp_flags_is_init (u8 f)
@@ -844,111 +820,59 @@ is_sm_switch_address (u32 f)
return (f & NAT_SM_FLAG_SWITCH_ADDRESS);
}
-/* logging */
#define nat_log_err(...) \
vlib_log(VLIB_LOG_LEVEL_ERR, snat_main.log_class, __VA_ARGS__)
#define nat_log_warn(...) \
vlib_log(VLIB_LOG_LEVEL_WARNING, snat_main.log_class, __VA_ARGS__)
-#define nat_log_notice(...) \
- vlib_log(VLIB_LOG_LEVEL_NOTICE, snat_main.log_class, __VA_ARGS__)
#define nat_log_info(...) \
vlib_log(VLIB_LOG_LEVEL_INFO, snat_main.log_class, __VA_ARGS__)
#define nat_log_debug(...)\
vlib_log(VLIB_LOG_LEVEL_DEBUG, snat_main.log_class, __VA_ARGS__)
+clib_error_t *nat44_api_hookup (vlib_main_t *vm);
+
+int snat_set_workers (uword *bitmap);
+
+int nat44_plugin_enable (nat44_config_t c);
+int nat44_plugin_disable ();
+
+int nat44_ed_add_interface (u32 sw_if_index, u8 is_inside);
+int nat44_ed_del_interface (u32 sw_if_index, u8 is_inside);
+int nat44_ed_add_output_interface (u32 sw_if_index);
+int nat44_ed_del_output_interface (u32 sw_if_index);
+
+int nat44_ed_add_address (ip4_address_t *addr, u32 vrf_id, u8 twice_nat);
+int nat44_ed_del_address (ip4_address_t addr, u8 twice_nat);
+int nat44_ed_add_interface_address (u32 sw_if_index, u8 twice_nat);
+int nat44_ed_del_interface_address (u32 sw_if_index, u8 twice_nat);
+
+int nat44_ed_add_del_vrf_table (u32 table_vrf_id, bool is_add);
+int nat44_ed_add_del_vrf_route (u32 table_vrf_id, u32 vrf_id, bool is_add);
+void nat44_ed_del_vrf_tables ();
+
int nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
- u16 l_port, u16 e_port, nat_protocol_t proto,
+ u16 l_port, u16 e_port, ip_protocol_t proto,
u32 vrf_id, u32 sw_if_index, u32 flags,
ip4_address_t pool_addr, u8 *tag);
int nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
- u16 l_port, u16 e_port, nat_protocol_t proto,
+ u16 l_port, u16 e_port, ip_protocol_t proto,
u32 vrf_id, u32 sw_if_index, u32 flags);
int nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
- nat_protocol_t proto,
+ ip_protocol_t proto,
nat44_lb_addr_port_t *locals, u32 flags,
u8 *tag, u32 affinity);
int nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
- nat_protocol_t proto, u32 flags);
+ ip_protocol_t proto, u32 flags);
int nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
ip4_address_t l_addr, u16 l_port,
- nat_protocol_t proto, u32 vrf_id,
+ ip_protocol_t proto, u32 vrf_id,
u8 probability, u8 is_add);
/**
- * @brief Enable NAT44 plugin
- *
- * @param c nat44_config_t
- *
- * @return 0 on success, non-zero value otherwise
- */
-int nat44_plugin_enable (nat44_config_t c);
-
-/**
- * @brief Disable NAT44 plugin
- *
- * @return 0 on success, non-zero value otherwise
- */
-int nat44_plugin_disable ();
-
-/**
- * @brief Add external address to NAT44 pool
- *
- * @param sm snat global configuration data
- * @param addr IPv4 address
- * @param vrf_id VRF id of tenant, ~0 means independent of VRF
- * @param twice_nat 1 if twice NAT address
- *
- * @return 0 on success, non-zero value otherwise
- */
-int snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id,
- u8 twice_nat);
-
-/**
- * @brief Delete external address from NAT44 pool
- *
- * @param sm snat global configuration data
- * @param addr IPv4 address
- * @param delete_sm 1 if delete static mapping using address
- * @param twice_nat 1 if twice NAT address
- *
- * @return 0 on success, non-zero value otherwise
- */
-int snat_del_address (snat_main_t * sm, ip4_address_t addr, u8 delete_sm,
- u8 twice_nat);
-
-clib_error_t *nat44_api_hookup (vlib_main_t * vm);
-
-/**
- * @brief Set NAT plugin workers
- *
- * @param bitmap NAT workers bitmap
- *
- * @return 0 on success, non-zero value otherwise
- */
-int snat_set_workers (uword * bitmap);
-
-int nat44_ed_add_interface (u32 sw_if_index, u8 is_inside);
-int nat44_ed_del_interface (u32 sw_if_index, u8 is_inside);
-int nat44_ed_add_output_interface (u32 sw_if_index);
-int nat44_ed_del_output_interface (u32 sw_if_index);
-
-/**
- * @brief Add/delete NAT44 pool address from specific interface
- *
- * @param sw_if_index software index of the interface
- * @param is_del 1 = delete, 0 = add
- * @param twice_nat 1 = twice NAT address for external hosts
- *
- * @return 0 on success, non-zero value otherwise
- */
-int snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del,
- u8 twice_nat);
-
-/**
* @brief Delete NAT44 endpoint-dependent session
*
* @param sm snat global configuration data
@@ -960,20 +884,12 @@ int snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del,
*
* @return 0 on success, non-zero value otherwise
*/
-int nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+int nat44_ed_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
+ ip4_address_t *eh_addr, u16 eh_port, u8 proto,
u32 vrf_id, int is_in);
-/**
- * @brief Free NAT44 session data (lookup keys, external address port)
- *
- * @param sm snat global configuration data
- * @param s NAT session
- * @param thread_index thread index
- * @param is_ha is HA event
- */
-void nat_free_session_data (snat_main_t * sm, snat_session_t * s,
- u32 thread_index, u8 is_ha);
+void nat44_ed_free_session_data (snat_main_t *sm, snat_session_t *s,
+ u32 thread_index, u8 is_ha);
/**
* @brief Set NAT44 session limit (session limit, vrf id)
@@ -993,89 +909,20 @@ int nat44_set_session_limit (u32 session_limit, u32 vrf_id);
*/
int nat44_update_session_limit (u32 session_limit, u32 vrf_id);
-/**
- * @brief Free outside address and port pair
- *
- * @param addresses vector of outside addresses
- * @param thread_index thread index
- * @param key address, port and protocol
- */
-void
-snat_free_outside_address_and_port (snat_address_t * addresses,
- u32 thread_index,
- ip4_address_t * addr,
- u16 port, nat_protocol_t protocol);
-
void expire_per_vrf_sessions (u32 fib_index);
-/**
- * @brief Match NAT44 static mapping.
- *
- * @param key address and port to match
- * @param addr external/local address of the matched mapping
- * @param port port of the matched mapping
- * @param fib_index fib index of the matched mapping
- * @param by_external if 0 match by local address otherwise match by external
- * address
- * @param is_addr_only 1 if matched mapping is address only
- * @param twice_nat matched mapping is twice NAT type
- * @param lb 1 if matched mapping is load-balanced
- * @param ext_host_addr external host address
- * @param is_identity_nat 1 if indentity mapping
- * @param out if !=0 set to pointer of the mapping structure
- *
- * @returns 0 if match found otherwise 1.
- */
-int snat_static_mapping_match (
- vlib_main_t *vm, snat_main_t *sm, ip4_address_t match_addr, u16 match_port,
- u32 match_fib_index, nat_protocol_t match_protocol,
- ip4_address_t *mapping_addr, u16 *mapping_port, u32 *mapping_fib_index,
- u8 by_external, u8 *is_addr_only, twice_nat_type_t *twice_nat,
- lb_nat_type_t *lb, ip4_address_t *ext_host_addr, u8 *is_identity_nat,
- snat_static_mapping_t **out);
-
-/**
- * @brief Add/del NAT address to FIB.
- *
- * Add the external NAT address to the FIB as receive entries. This ensures
- * that VPP will reply to ARP for this address and we don't need to enable
- * proxy ARP on the outside interface.
- *
- * @param addr IPv4 address
- * @param plen address prefix length
- * @param sw_if_index software index of the outside interface
- * @param is_add 0 = delete, 1 = add.
- */
-void snat_add_del_addr_to_fib (ip4_address_t * addr,
- u8 p_len, u32 sw_if_index, int is_add);
-
-int nat_set_outside_address_and_port (snat_address_t *addresses,
- u32 thread_index, ip4_address_t addr,
- u16 port, nat_protocol_t protocol);
-
-/*
- * Why is this here? Because we don't need to touch this layer to
- * simply reply to an icmp. We need to change id to a unique
- * value to NAT an echo request/reply.
- */
-
-typedef struct
-{
- u16 identifier;
- u16 sequence;
-} icmp_echo_header_t;
-
-typedef struct
-{
- u16 src_port, dst_port;
-} tcp_udp_header_t;
+int snat_static_mapping_match (vlib_main_t *vm, ip4_address_t match_addr,
+ u16 match_port, u32 match_fib_index,
+ ip_protocol_t match_protocol,
+ ip4_address_t *mapping_addr, u16 *mapping_port,
+ u32 *mapping_fib_index, int by_external,
+ u8 *is_addr_only, twice_nat_type_t *twice_nat,
+ lb_nat_type_t *lb, ip4_address_t *ext_host_addr,
+ u8 *is_identity_nat,
+ snat_static_mapping_t **out);
u32 get_thread_idx_by_port (u16 e_port);
-u8 *format_static_mapping_kvp (u8 *s, va_list *args);
-
-u8 *format_session_kvp (u8 *s, va_list *args);
-
u32 nat_calc_bihash_buckets (u32 n_elts);
void nat44_addresses_free (snat_address_t **addresses);
@@ -1084,6 +931,28 @@ void nat44_ed_sessions_clear ();
int nat44_ed_set_frame_queue_nelts (u32 frame_queue_nelts);
+void nat_6t_l3_l4_csum_calc (nat_6t_flow_t *f);
+
+snat_static_mapping_t *nat44_ed_sm_i2o_lookup (snat_main_t *sm,
+ ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto);
+
+snat_static_mapping_t *nat44_ed_sm_o2i_lookup (snat_main_t *sm,
+ ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto);
+
+void nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat);
+
+void nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat);
+
typedef enum
{
NAT_ED_TRNSL_ERR_SUCCESS = 0,
@@ -1096,17 +965,11 @@ typedef enum
nat_translation_error_e nat_6t_flow_buf_translate_i2o (
vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
- nat_6t_flow_t *f, nat_protocol_t proto, int is_output_feature);
+ nat_6t_flow_t *f, ip_protocol_t proto, int is_output_feature);
nat_translation_error_e nat_6t_flow_buf_translate_o2i (
vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
- nat_6t_flow_t *f, nat_protocol_t proto, int is_output_feature);
-
-void nat_6t_l3_l4_csum_calc (nat_6t_flow_t *f);
-
-format_function_t format_nat_ed_translation_error;
-format_function_t format_nat_6t_flow;
-format_function_t format_ed_session_kvp;
+ nat_6t_flow_t *f, ip_protocol_t proto, int is_output_feature);
#endif /* __included_nat44_ed_h__ */
/*
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_affinity.c b/src/plugins/nat/nat44-ed/nat44_ed_affinity.c
index 89f11c64ef3..178671c6b7e 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_affinity.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_affinity.c
@@ -37,10 +37,9 @@ format_affinity_kvp (u8 * s, va_list * args)
k.as_u64[1] = v->key[1];
s = format (s, "client %U backend %U:%d proto %U index %llu",
- format_ip4_address, &k.client_addr,
- format_ip4_address, &k.service_addr,
- clib_net_to_host_u16 (k.service_port),
- format_nat_protocol, k.proto);
+ format_ip4_address, &k.client_addr, format_ip4_address,
+ &k.service_addr, clib_net_to_host_u16 (k.service_port),
+ format_ip_protocol, k.proto);
return s;
}
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_api.c b/src/plugins/nat/nat44-ed/nat44_ed_api.c
index 74d48b2d821..b6c9d51d777 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_api.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_api.c
@@ -31,6 +31,8 @@
#include <nat/nat44-ed/nat44_ed.api_enum.h>
#include <nat/nat44-ed/nat44_ed.api_types.h>
+#include <nat/nat44-ed/nat44_ed_inlines.h>
+
#define REPLY_MSG_ID_BASE sm->msg_id_base
#include <vlibapi/api_helper_macros.h>
@@ -47,15 +49,19 @@ vl_api_nat44_ed_plugin_enable_disable_t_handler (
if (mp->enable)
{
- c.static_mapping_only = mp->flags & NAT44_API_IS_STATIC_MAPPING_ONLY;
- c.connection_tracking = mp->flags & NAT44_API_IS_CONNECTION_TRACKING;
-
- c.inside_vrf = ntohl (mp->inside_vrf);
- c.outside_vrf = ntohl (mp->outside_vrf);
-
- c.sessions = ntohl (mp->sessions);
+ if ((mp->flags & NAT44_API_IS_STATIC_MAPPING_ONLY) ||
+ (mp->flags & NAT44_API_IS_CONNECTION_TRACKING))
+ {
+ rv = VNET_API_ERROR_UNSUPPORTED;
+ }
+ else
+ {
+ c.sessions = ntohl (mp->sessions);
+ c.inside_vrf = ntohl (mp->inside_vrf);
+ c.outside_vrf = ntohl (mp->outside_vrf);
- rv = nat44_plugin_enable (c);
+ rv = nat44_plugin_enable (c);
+ }
}
else
{
@@ -171,21 +177,6 @@ vl_api_nat44_set_session_limit_t_handler (vl_api_nat44_set_session_limit_t *
}
static void
-vl_api_nat_set_log_level_t_handler (vl_api_nat_set_log_level_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_set_log_level_reply_t *rmp;
- int rv = 0;
-
- if (sm->log_level > NAT_LOG_DEBUG)
- rv = VNET_API_ERROR_UNSUPPORTED;
- else
- sm->log_level = mp->log_level;
-
- REPLY_MACRO (VL_API_NAT_SET_WORKERS_REPLY);
-}
-
-static void
vl_api_nat_ipfix_enable_disable_t_handler (vl_api_nat_ipfix_enable_disable_t *
mp)
{
@@ -217,22 +208,6 @@ vl_api_nat_set_timeouts_t_handler (vl_api_nat_set_timeouts_t * mp)
}
static void
-vl_api_nat_get_timeouts_t_handler (vl_api_nat_get_timeouts_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_get_timeouts_reply_t *rmp;
- int rv = 0;
-
- REPLY_MACRO2 (VL_API_NAT_GET_TIMEOUTS_REPLY,
- ({
- rmp->udp = htonl (sm->timeouts.udp);
- rmp->tcp_established = htonl (sm->timeouts.tcp.established);
- rmp->tcp_transitory = htonl (sm->timeouts.tcp.transitory);
- rmp->icmp = htonl (sm->timeouts.icmp);
- }))
-}
-
-static void
vl_api_nat_set_mss_clamping_t_handler (vl_api_nat_set_mss_clamping_t * mp)
{
snat_main_t *sm = &snat_main;
@@ -275,12 +250,6 @@ static void
int rv = 0;
u32 *tmp;
- if (sm->static_mapping_only)
- {
- rv = VNET_API_ERROR_FEATURE_DISABLED;
- goto send_reply;
- }
-
is_add = mp->is_add;
twice_nat = mp->flags & NAT_API_IS_TWICE_NAT;
@@ -303,9 +272,13 @@ static void
for (i = 0; i < count; i++)
{
if (is_add)
- rv = snat_add_address (sm, &this_addr, vrf_id, twice_nat);
+ {
+ rv = nat44_ed_add_address (&this_addr, vrf_id, twice_nat);
+ }
else
- rv = snat_del_address (sm, this_addr, 0, twice_nat);
+ {
+ rv = nat44_ed_del_address (this_addr, twice_nat);
+ }
if (rv)
goto send_reply;
@@ -400,9 +373,9 @@ send_nat44_interface_details (snat_interface_t * i,
rmp->_vl_msg_id = ntohs (VL_API_NAT44_INTERFACE_DETAILS + sm->msg_id_base);
rmp->sw_if_index = ntohl (i->sw_if_index);
- if (nat_interface_is_inside (i))
+ if (nat44_ed_is_interface_inside (i))
rmp->flags |= NAT_API_IS_INSIDE;
- if (nat_interface_is_outside (i))
+ if (nat44_ed_is_interface_outside (i))
rmp->flags |= NAT_API_IS_OUTSIDE;
rmp->context = context;
@@ -422,74 +395,77 @@ vl_api_nat44_interface_dump_t_handler (vl_api_nat44_interface_dump_t * mp)
return;
pool_foreach (i, sm->interfaces)
- {
- send_nat44_interface_details(i, reg, mp->context);
- }
+ {
+ send_nat44_interface_details (i, reg, mp->context);
+ }
}
static void
- vl_api_nat44_interface_add_del_output_feature_t_handler
- (vl_api_nat44_interface_add_del_output_feature_t * mp)
+vl_api_nat44_ed_add_del_output_interface_t_handler (
+ vl_api_nat44_ed_add_del_output_interface_t *mp)
{
- vl_api_nat44_interface_add_del_output_feature_reply_t *rmp;
+ vl_api_nat44_ed_add_del_output_interface_reply_t *rmp;
snat_main_t *sm = &snat_main;
- u32 sw_if_index;
int rv = 0;
- VALIDATE_SW_IF_INDEX (mp);
-
- sw_if_index = ntohl (mp->sw_if_index);
+ VALIDATE_SW_IF_INDEX_END (mp);
if (mp->is_add)
{
- rv = nat44_ed_add_output_interface (sw_if_index);
+ rv = nat44_ed_add_output_interface (mp->sw_if_index);
}
else
{
- rv = nat44_ed_del_output_interface (sw_if_index);
+ rv = nat44_ed_del_output_interface (mp->sw_if_index);
}
- BAD_SW_IF_INDEX_LABEL;
- REPLY_MACRO (VL_API_NAT44_INTERFACE_ADD_DEL_OUTPUT_FEATURE_REPLY);
+bad_sw_if_index:
+ REPLY_MACRO_END (VL_API_NAT44_ED_ADD_DEL_OUTPUT_INTERFACE_REPLY);
}
+#define vl_endianfun
+#include <nat/nat44-ed/nat44_ed.api.h>
+#undef vl_endianfun
static void
-send_nat44_interface_output_feature_details (snat_interface_t * i,
- vl_api_registration_t * reg,
- u32 context)
+send_nat44_ed_output_interface_details (u32 index, vl_api_registration_t *rp,
+ u32 context)
{
- vl_api_nat44_interface_output_feature_details_t *rmp;
snat_main_t *sm = &snat_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id =
- ntohs (VL_API_NAT44_INTERFACE_OUTPUT_FEATURE_DETAILS + sm->msg_id_base);
- rmp->sw_if_index = ntohl (i->sw_if_index);
- rmp->context = context;
-
- if (nat_interface_is_inside (i))
- rmp->flags |= NAT_API_IS_INSIDE;
-
- vl_api_send_msg (reg, (u8 *) rmp);
+ vl_api_nat44_ed_output_interface_details_t *rmp;
+ snat_interface_t *i =
+ pool_elt_at_index (sm->output_feature_interfaces, index);
+
+ /* Make sure every field is initiated (or don't skip the clib_memset()) */
+ REPLY_MACRO_DETAILS4 (
+ VL_API_NAT44_ED_OUTPUT_INTERFACE_DETAILS, rp, context, ({
+ rmp->sw_if_index = i->sw_if_index;
+
+ /* Endian hack until apigen registers _details
+ * endian functions */
+ vl_api_nat44_ed_output_interface_details_t_endian (rmp,
+ 1 /* to network */);
+ rmp->_vl_msg_id = htons (rmp->_vl_msg_id);
+ rmp->context = htonl (rmp->context);
+ }));
}
static void
- vl_api_nat44_interface_output_feature_dump_t_handler
- (vl_api_nat44_interface_output_feature_dump_t * mp)
+vl_api_nat44_ed_output_interface_get_t_handler (
+ vl_api_nat44_ed_output_interface_get_t *mp)
{
- vl_api_registration_t *reg;
+ vl_api_nat44_ed_output_interface_get_reply_t *rmp;
snat_main_t *sm = &snat_main;
- snat_interface_t *i;
+ i32 rv = 0;
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
+ if (pool_elts (sm->output_feature_interfaces) == 0)
+ {
+ REPLY_MACRO (VL_API_NAT44_ED_OUTPUT_INTERFACE_GET_REPLY);
+ return;
+ }
- pool_foreach (i, sm->output_feature_interfaces)
- {
- send_nat44_interface_output_feature_details (i, reg, mp->context);
- }
+ REPLY_AND_DETAILS_MACRO (
+ VL_API_NAT44_ED_OUTPUT_INTERFACE_GET_REPLY, sm->output_feature_interfaces,
+ ({ send_nat44_ed_output_interface_details (cursor, rp, mp->context); }));
}
static void
@@ -504,7 +480,7 @@ static void
ip4_address_t l_addr, e_addr, pool_addr = { 0 };
u32 sw_if_index, flags = 0, vrf_id;
u16 l_port = 0, e_port = 0;
- nat_protocol_t proto = 0;
+ ip_protocol_t proto = 0;
u8 *tag = 0;
memcpy (&l_addr.as_u8, mp->local_ip_address, 4);
@@ -517,7 +493,7 @@ static void
{
l_port = mp->local_port;
e_port = mp->external_port;
- proto = ip_proto_to_nat_proto (mp->protocol);
+ proto = mp->protocol;
}
if (mp->flags & NAT_API_IS_TWICE_NAT)
@@ -578,7 +554,7 @@ static void
ip4_address_t l_addr, e_addr, pool_addr;
u32 sw_if_index, flags = 0, vrf_id;
u16 l_port = 0, e_port = 0;
- nat_protocol_t proto;
+ ip_protocol_t proto;
u8 *tag = 0;
memcpy (&l_addr.as_u8, mp->local_ip_address, 4);
@@ -615,7 +591,7 @@ static void
}
sw_if_index = clib_net_to_host_u32 (mp->external_sw_if_index);
- if (sw_if_index)
+ if (sw_if_index != ~0)
{
flags |= NAT_SM_FLAG_SWITCH_ADDRESS;
}
@@ -624,7 +600,7 @@ static void
memcpy (&e_addr.as_u8, mp->external_ip_address, 4);
}
- proto = ip_proto_to_nat_proto (mp->protocol);
+ proto = mp->protocol;
vrf_id = clib_net_to_host_u32 (mp->vrf_id);
if (mp->is_add)
@@ -688,7 +664,7 @@ send_nat44_static_mapping_details (snat_static_mapping_t * m,
}
else
{
- rmp->protocol = nat_proto_to_ip_proto (m->proto);
+ rmp->protocol = m->proto;
rmp->external_port = m->external_port;
rmp->local_port = m->local_port;
}
@@ -700,9 +676,8 @@ send_nat44_static_mapping_details (snat_static_mapping_t * m,
}
static void
-send_nat44_static_map_resolve_details (snat_static_map_resolve_t * m,
- vl_api_registration_t * reg,
- u32 context)
+send_nat44_static_map_resolve_details (snat_static_mapping_resolve_t *m,
+ vl_api_registration_t *reg, u32 context)
{
vl_api_nat44_static_mapping_details_t *rmp;
snat_main_t *sm = &snat_main;
@@ -716,19 +691,22 @@ send_nat44_static_map_resolve_details (snat_static_map_resolve_t * m,
rmp->vrf_id = htonl (m->vrf_id);
rmp->context = context;
- if (m->twice_nat)
- rmp->flags |= NAT_API_IS_TWICE_NAT;
+ if (is_sm_twice_nat (m->flags))
+ {
+ rmp->flags |= NAT_API_IS_TWICE_NAT;
+ }
- if (m->addr_only)
+ if (is_sm_addr_only (m->flags))
{
rmp->flags |= NAT_API_IS_ADDR_ONLY;
}
else
{
- rmp->protocol = nat_proto_to_ip_proto (m->proto);
+ rmp->protocol = m->proto;
rmp->external_port = m->e_port;
rmp->local_port = m->l_port;
}
+
if (m->tag)
strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
@@ -742,7 +720,7 @@ vl_api_nat44_static_mapping_dump_t_handler (vl_api_nat44_static_mapping_dump_t
vl_api_registration_t *reg;
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
- snat_static_map_resolve_t *rp;
+ snat_static_mapping_resolve_t *rp;
int j;
reg = vl_api_client_index_to_registration (mp->client_index);
@@ -755,10 +733,10 @@ vl_api_nat44_static_mapping_dump_t_handler (vl_api_nat44_static_mapping_dump_t
send_nat44_static_mapping_details (m, reg, mp->context);
}
- for (j = 0; j < vec_len (sm->to_resolve); j++)
+ for (j = 0; j < vec_len (sm->sm_to_resolve); j++)
{
- rp = sm->to_resolve + j;
- if (!rp->identity_nat)
+ rp = sm->sm_to_resolve + j;
+ if (!is_sm_identity_nat (rp->flags))
send_nat44_static_map_resolve_details (rp, reg, mp->context);
}
}
@@ -774,7 +752,7 @@ static void
ip4_address_t addr, pool_addr = { 0 };
u32 sw_if_index, flags, vrf_id;
- nat_protocol_t proto = 0;
+ ip_protocol_t proto = 0;
u16 port = 0;
u8 *tag = 0;
@@ -787,7 +765,7 @@ static void
else
{
port = mp->port;
- proto = ip_proto_to_nat_proto (mp->protocol);
+ proto = mp->protocol;
}
sw_if_index = clib_net_to_host_u32 (mp->sw_if_index);
@@ -840,7 +818,7 @@ send_nat44_identity_mapping_details (snat_static_mapping_t * m, int index,
rmp->port = m->local_port;
rmp->sw_if_index = ~0;
rmp->vrf_id = htonl (local->vrf_id);
- rmp->protocol = nat_proto_to_ip_proto (m->proto);
+ rmp->protocol = m->proto;
rmp->context = context;
if (m->tag)
strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
@@ -849,8 +827,8 @@ send_nat44_identity_mapping_details (snat_static_mapping_t * m, int index,
}
static void
-send_nat44_identity_map_resolve_details (snat_static_map_resolve_t * m,
- vl_api_registration_t * reg,
+send_nat44_identity_map_resolve_details (snat_static_mapping_resolve_t *m,
+ vl_api_registration_t *reg,
u32 context)
{
vl_api_nat44_identity_mapping_details_t *rmp;
@@ -861,13 +839,13 @@ send_nat44_identity_map_resolve_details (snat_static_map_resolve_t * m,
rmp->_vl_msg_id =
ntohs (VL_API_NAT44_IDENTITY_MAPPING_DETAILS + sm->msg_id_base);
- if (m->addr_only)
+ if (is_sm_addr_only (m->flags))
rmp->flags = (vl_api_nat_config_flags_t) NAT_API_IS_ADDR_ONLY;
rmp->port = m->l_port;
rmp->sw_if_index = htonl (m->sw_if_index);
rmp->vrf_id = htonl (m->vrf_id);
- rmp->protocol = nat_proto_to_ip_proto (m->proto);
+ rmp->protocol = m->proto;
rmp->context = context;
if (m->tag)
strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
@@ -882,7 +860,7 @@ static void
vl_api_registration_t *reg;
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
- snat_static_map_resolve_t *rp;
+ snat_static_mapping_resolve_t *rp;
int j;
reg = vl_api_client_index_to_registration (mp->client_index);
@@ -890,20 +868,20 @@ static void
return;
pool_foreach (m, sm->static_mappings)
- {
- if (is_sm_identity_nat (m->flags) && !is_sm_lb (m->flags))
- {
- pool_foreach_index (j, m->locals)
- {
- send_nat44_identity_mapping_details (m, j, reg, mp->context);
- }
- }
- }
+ {
+ if (is_sm_identity_nat (m->flags) && !is_sm_lb (m->flags))
+ {
+ pool_foreach_index (j, m->locals)
+ {
+ send_nat44_identity_mapping_details (m, j, reg, mp->context);
+ }
+ }
+ }
- for (j = 0; j < vec_len (sm->to_resolve); j++)
+ for (j = 0; j < vec_len (sm->sm_to_resolve); j++)
{
- rp = sm->to_resolve + j;
- if (rp->identity_nat)
+ rp = sm->sm_to_resolve + j;
+ if (is_sm_identity_nat (rp->flags))
send_nat44_identity_map_resolve_details (rp, reg, mp->context);
}
}
@@ -915,25 +893,24 @@ static void
snat_main_t *sm = &snat_main;
vl_api_nat44_add_del_interface_addr_reply_t *rmp;
u32 sw_if_index = ntohl (mp->sw_if_index);
+ u8 twice_nat;
int rv = 0;
- u8 is_del;
-
- if (sm->static_mapping_only)
- {
- rv = VNET_API_ERROR_FEATURE_DISABLED;
- goto send_reply;
- }
-
- is_del = !mp->is_add;
VALIDATE_SW_IF_INDEX (mp);
- rv = snat_add_interface_address (sm, sw_if_index, is_del,
- mp->flags & NAT_API_IS_TWICE_NAT);
+ twice_nat = mp->flags & NAT_API_IS_TWICE_NAT;
+
+ if (mp->is_add)
+ {
+ rv = nat44_ed_add_interface_address (sw_if_index, twice_nat);
+ }
+ else
+ {
+ rv = nat44_ed_del_interface_address (sw_if_index, twice_nat);
+ }
BAD_SW_IF_INDEX_LABEL;
-send_reply:
REPLY_MACRO (VL_API_NAT44_ADD_DEL_INTERFACE_ADDR_REPLY);
}
@@ -962,21 +939,18 @@ static void
vl_api_nat44_interface_addr_dump_t_handler (vl_api_nat44_interface_addr_dump_t
* mp)
{
- vl_api_registration_t *reg;
snat_main_t *sm = &snat_main;
- u32 *i;
+ vl_api_registration_t *reg;
+ snat_address_resolve_t *ap;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
- vec_foreach (i, sm->auto_add_sw_if_indices)
- {
- send_nat44_interface_addr_details (*i, reg, mp->context, 0);
- }
- vec_foreach (i, sm->auto_add_sw_if_indices_twice_nat)
+ vec_foreach (ap, sm->addr_to_resolve)
{
- send_nat44_interface_addr_details (*i, reg, mp->context, 1);
+ send_nat44_interface_addr_details (ap->sw_if_index, reg, mp->context,
+ ap->is_twice_nat);
}
}
@@ -1010,7 +984,7 @@ vl_api_nat44_add_del_lb_static_mapping_t_handler (
vl_api_nat44_add_del_lb_static_mapping_reply_t *rmp;
nat44_lb_addr_port_t *locals = 0;
ip4_address_t e_addr;
- nat_protocol_t proto;
+ ip_protocol_t proto;
u32 flags = 0;
u8 *tag = 0;
int rv = 0;
@@ -1018,7 +992,7 @@ vl_api_nat44_add_del_lb_static_mapping_t_handler (
locals = unformat_nat44_lb_addr_port (mp->locals,
clib_net_to_host_u32 (mp->local_num));
clib_memcpy (&e_addr, mp->external_addr, 4);
- proto = ip_proto_to_nat_proto (mp->protocol);
+ proto = mp->protocol;
if (mp->flags & NAT_API_IS_TWICE_NAT)
{
@@ -1063,11 +1037,11 @@ vl_api_nat44_lb_static_mapping_add_del_local_t_handler (
vl_api_nat44_lb_static_mapping_add_del_local_reply_t *rmp;
int rv = 0;
ip4_address_t e_addr, l_addr;
- nat_protocol_t proto;
+ ip_protocol_t proto;
clib_memcpy (&e_addr, mp->external_addr, 4);
clib_memcpy (&l_addr, mp->local.addr, 4);
- proto = ip_proto_to_nat_proto (mp->protocol);
+ proto = mp->protocol;
rv = nat44_ed_add_del_lb_static_mapping_local (
e_addr, mp->external_port, l_addr, mp->local.port, proto,
@@ -1089,13 +1063,14 @@ send_nat44_lb_static_mapping_details (snat_static_mapping_t *m,
rmp = vl_msg_api_alloc (
sizeof (*rmp) + (pool_elts (m->locals) * sizeof (nat44_lb_addr_port_t)));
+
clib_memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id =
ntohs (VL_API_NAT44_LB_STATIC_MAPPING_DETAILS + sm->msg_id_base);
clib_memcpy (rmp->external_addr, &(m->external_addr), 4);
rmp->external_port = m->external_port;
- rmp->protocol = nat_proto_to_ip_proto (m->proto);
+ rmp->protocol = m->proto;
rmp->context = context;
if (is_sm_self_twice_nat (m->flags))
@@ -1169,7 +1144,7 @@ vl_api_nat44_del_session_t_handler (vl_api_nat44_del_session_t *mp)
is_in = mp->flags & NAT_API_IS_INSIDE;
- rv = nat44_del_ed_session (sm, &addr, port, &eh_addr, eh_port, mp->protocol,
+ rv = nat44_ed_del_session (sm, &addr, port, &eh_addr, eh_port, mp->protocol,
vrf_id, is_in);
REPLY_MACRO (VL_API_NAT44_DEL_SESSION_REPLY);
@@ -1187,253 +1162,160 @@ vl_api_nat44_forwarding_enable_disable_t_handler (
}
static void
-vl_api_nat44_forwarding_is_enabled_t_handler (
- vl_api_nat44_forwarding_is_enabled_t *mp)
+vl_api_nat44_show_running_config_t_handler (
+ vl_api_nat44_show_running_config_t *mp)
{
- vl_api_registration_t *reg;
+ vl_api_nat44_show_running_config_reply_t *rmp;
snat_main_t *sm = &snat_main;
- vl_api_nat44_forwarding_is_enabled_reply_t *rmp;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
+ nat44_config_t *rc = &sm->rconfig;
+ int rv = 0;
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id =
- ntohs (VL_API_NAT44_FORWARDING_IS_ENABLED_REPLY + sm->msg_id_base);
- rmp->context = mp->context;
+ REPLY_MACRO2_ZERO (
+ VL_API_NAT44_SHOW_RUNNING_CONFIG_REPLY, ({
+ rmp->inside_vrf = htonl (rc->inside_vrf);
+ rmp->outside_vrf = htonl (rc->outside_vrf);
- rmp->enabled = sm->forwarding_enabled;
+ rmp->sessions = htonl (rc->sessions);
+ rmp->translation_buckets = htonl (sm->translation_buckets);
- vl_api_send_msg (reg, (u8 *) rmp);
-}
+ // OBSOLETE
+ rmp->users = 0;
+ rmp->user_buckets = 0;
+ rmp->user_sessions = 0;
-/* Obsolete calls hold back because of deprecation
- * should not be used */
+ rmp->timeouts.udp = htonl (sm->timeouts.udp);
+ rmp->timeouts.tcp_established = htonl (sm->timeouts.tcp.established);
+ rmp->timeouts.tcp_transitory = htonl (sm->timeouts.tcp.transitory);
+ rmp->timeouts.icmp = htonl (sm->timeouts.icmp);
-static void
-vl_api_nat_set_addr_and_port_alloc_alg_t_handler (
- vl_api_nat_set_addr_and_port_alloc_alg_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_set_addr_and_port_alloc_alg_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_SET_ADDR_AND_PORT_ALLOC_ALG_REPLY);
+ rmp->forwarding_enabled = sm->forwarding_enabled == 1;
+ // consider how to split functionality between subplugins
+ rmp->ipfix_logging_enabled = nat_ipfix_logging_enabled ();
+ rmp->flags |= NAT44_IS_ENDPOINT_DEPENDENT;
+ }));
}
static void
-vl_api_nat_get_addr_and_port_alloc_alg_t_handler (
- vl_api_nat_get_addr_and_port_alloc_alg_t *mp)
+vl_api_nat44_ed_add_del_vrf_table_t_handler (
+ vl_api_nat44_ed_add_del_vrf_table_t *mp)
{
snat_main_t *sm = &snat_main;
- vl_api_nat_get_addr_and_port_alloc_alg_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_GET_ADDR_AND_PORT_ALLOC_ALG_REPLY);
+ vl_api_nat44_ed_add_del_vrf_table_reply_t *rmp;
+ int rv = nat44_ed_add_del_vrf_table (clib_net_to_host_u32 (mp->table_vrf_id),
+ mp->is_add);
+ REPLY_MACRO (VL_API_NAT44_ED_ADD_DEL_VRF_TABLE_REPLY);
}
static void
-vl_api_nat_ha_set_listener_t_handler (vl_api_nat_ha_set_listener_t *mp)
+vl_api_nat44_ed_add_del_vrf_route_t_handler (
+ vl_api_nat44_ed_add_del_vrf_route_t *mp)
{
snat_main_t *sm = &snat_main;
- vl_api_nat_ha_set_listener_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_HA_SET_LISTENER_REPLY);
+ vl_api_nat44_ed_add_del_vrf_route_reply_t *rmp;
+ int rv =
+ nat44_ed_add_del_vrf_route (clib_net_to_host_u32 (mp->table_vrf_id),
+ clib_net_to_host_u32 (mp->vrf_id), mp->is_add);
+ REPLY_MACRO (VL_API_NAT44_ED_ADD_DEL_VRF_ROUTE_REPLY);
}
static void
-vl_api_nat_ha_get_listener_t_handler (vl_api_nat_ha_get_listener_t *mp)
+nat44_ed_vrf_tables_send_details (vl_api_registration_t *rp, u32 context,
+ vrf_table_t *t)
{
snat_main_t *sm = &snat_main;
- vl_api_nat_ha_get_listener_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_HA_GET_LISTENER_REPLY);
-}
+ vl_api_nat44_ed_vrf_tables_details_t *mp;
-static void
-vl_api_nat_ha_set_failover_t_handler (vl_api_nat_ha_set_failover_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_ha_set_failover_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_HA_SET_FAILOVER_REPLY);
-}
+ u32 *vrf_ids = 0;
+ vrf_route_t *r;
-static void
-vl_api_nat_ha_get_failover_t_handler (vl_api_nat_ha_get_failover_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_ha_get_failover_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_HA_GET_FAILOVER_REPLY);
-}
+ mp = vl_msg_api_alloc_zero (sizeof (*mp) +
+ sizeof (mp->vrf_ids[0]) * vec_len (t->routes));
+ mp->_vl_msg_id =
+ ntohs (VL_API_NAT44_ED_VRF_TABLES_DETAILS + sm->msg_id_base);
+ mp->context = context;
+ mp->n_vrf_ids = clib_host_to_net_u32 (vec_len (t->routes));
-static void
-vl_api_nat_ha_flush_t_handler (vl_api_nat_ha_flush_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_ha_flush_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_HA_FLUSH_REPLY);
-}
+ pool_foreach (r, t->routes)
+ {
+ vec_add1 (vrf_ids, r->vrf_id);
+ }
-static void
-vl_api_nat_ha_resync_t_handler (vl_api_nat_ha_resync_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_ha_resync_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_HA_RESYNC_REPLY);
-}
+ // copy the records
+ clib_memcpy (mp->vrf_ids, vrf_ids,
+ sizeof (mp->vrf_ids[0]) * vec_len (t->routes));
-static void
-vl_api_nat44_del_user_t_handler (vl_api_nat44_del_user_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat44_del_user_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT44_DEL_USER_REPLY);
-}
+ vec_free (vrf_ids);
-static void
-vl_api_nat44_session_cleanup_t_handler (vl_api_nat44_session_cleanup_t *mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat44_session_cleanup_reply_t *rmp;
- int rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT44_SESSION_CLEANUP_REPLY);
+ // send the message
+ vl_api_send_msg (rp, (u8 *) mp);
}
static void
-vl_api_nat44_plugin_enable_disable_t_handler (
- vl_api_nat44_plugin_enable_disable_t *mp)
+nat44_ed_vrf_tables_send_details_v2 (vl_api_registration_t *rp, u32 context,
+ vrf_table_t *t)
{
snat_main_t *sm = &snat_main;
- nat44_config_t c = { 0 };
- vl_api_nat44_plugin_enable_disable_reply_t *rmp;
- int rv = 0;
+ vl_api_nat44_ed_vrf_tables_v2_details_t *mp;
- if (mp->enable)
- {
- if (mp->users || mp->user_sessions)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- }
- else
- {
- c.static_mapping_only = mp->flags & NAT44_API_IS_STATIC_MAPPING_ONLY;
- c.connection_tracking = mp->flags & NAT44_API_IS_CONNECTION_TRACKING;
+ u32 *vrf_ids = 0;
+ vrf_route_t *r;
- c.inside_vrf = ntohl (mp->inside_vrf);
- c.outside_vrf = ntohl (mp->outside_vrf);
-
- c.sessions = ntohl (mp->sessions);
-
- rv = nat44_plugin_enable (c);
- }
- }
- else
+ mp = vl_msg_api_alloc_zero (sizeof (*mp) +
+ sizeof (mp->vrf_ids[0]) * vec_len (t->routes));
+ mp->_vl_msg_id = clib_net_to_host_u16 (VL_API_NAT44_ED_VRF_TABLES_DETAILS +
+ sm->msg_id_base);
+ mp->context = context;
+ mp->n_vrf_ids = clib_net_to_host_u32 (vec_len (t->routes));
+ mp->table_vrf_id = clib_net_to_host_u32 (t->table_vrf_id);
+ pool_foreach (r, t->routes)
{
- rv = nat44_plugin_disable ();
+ vec_add1 (vrf_ids, clib_net_to_host_u32 (r->vrf_id));
}
- REPLY_MACRO (VL_API_NAT44_PLUGIN_ENABLE_DISABLE_REPLY);
-}
+ // copy the records
+ clib_memcpy (mp->vrf_ids, vrf_ids,
+ sizeof (mp->vrf_ids[0]) * vec_len (t->routes));
-static void
-vl_api_nat_control_ping_t_handler (vl_api_nat_control_ping_t *mp)
-{
- vl_api_nat_control_ping_reply_t *rmp;
- snat_main_t *sm = &snat_main;
- int rv = 0;
+ vec_free (vrf_ids);
- REPLY_MACRO2 (VL_API_NAT_CONTROL_PING_REPLY,
- ({ rmp->vpe_pid = ntohl (getpid ()); }));
+ // send the message
+ vl_api_send_msg (rp, (u8 *) mp);
}
static void
-vl_api_nat_show_config_t_handler (vl_api_nat_show_config_t *mp)
+vl_api_nat44_ed_vrf_tables_dump_t_handler (
+ vl_api_nat44_ed_vrf_tables_dump_t *mp)
{
- vl_api_nat_show_config_reply_t *rmp;
snat_main_t *sm = &snat_main;
- int rv = 0;
+ vl_api_registration_t *rp;
+ vrf_table_t *t;
- REPLY_MACRO2_ZERO (VL_API_NAT_SHOW_CONFIG_REPLY, ({
- rmp->translation_buckets =
- htonl (sm->translation_buckets);
- rmp->user_buckets = 0;
- rmp->max_translations_per_user = 0;
- rmp->outside_vrf_id = htonl (sm->outside_vrf_id);
- rmp->inside_vrf_id = htonl (sm->inside_vrf_id);
- rmp->static_mapping_only = sm->static_mapping_only;
- rmp->static_mapping_connection_tracking =
- sm->static_mapping_connection_tracking;
- rmp->endpoint_dependent = 1;
- rmp->out2in_dpo = 0;
- }));
-}
-
-static void
-vl_api_nat_show_config_2_t_handler (vl_api_nat_show_config_2_t *mp)
-{
- vl_api_nat_show_config_2_reply_t *rmp;
- snat_main_t *sm = &snat_main;
- int rv = 0;
+ rp = vl_api_client_index_to_registration (mp->client_index);
+ if (rp == 0)
+ return;
- REPLY_MACRO2_ZERO (
- VL_API_NAT_SHOW_CONFIG_2_REPLY, ({
- rmp->translation_buckets = htonl (sm->translation_buckets);
- rmp->user_buckets = 0;
- rmp->max_translations_per_user = 0;
- rmp->outside_vrf_id = htonl (sm->outside_vrf_id);
- rmp->inside_vrf_id = htonl (sm->inside_vrf_id);
- rmp->static_mapping_only = sm->static_mapping_only;
- rmp->static_mapping_connection_tracking =
- sm->static_mapping_connection_tracking;
- rmp->endpoint_dependent = 1;
- rmp->out2in_dpo = 0;
- rmp->max_translations_per_thread =
- clib_net_to_host_u32 (sm->max_translations_per_thread);
- rmp->max_users_per_thread = 0;
- }));
+ pool_foreach (t, sm->vrf_tables)
+ {
+ nat44_ed_vrf_tables_send_details (rp, mp->context, t);
+ }
}
static void
-vl_api_nat44_show_running_config_t_handler (
- vl_api_nat44_show_running_config_t *mp)
+vl_api_nat44_ed_vrf_tables_v2_dump_t_handler (
+ vl_api_nat44_ed_vrf_tables_v2_dump_t *mp)
{
- vl_api_nat44_show_running_config_reply_t *rmp;
snat_main_t *sm = &snat_main;
- nat44_config_t *rc = &sm->rconfig;
- int rv = 0;
-
- REPLY_MACRO2_ZERO (
- VL_API_NAT44_SHOW_RUNNING_CONFIG_REPLY, ({
- rmp->inside_vrf = htonl (rc->inside_vrf);
- rmp->outside_vrf = htonl (rc->outside_vrf);
+ vl_api_registration_t *rp;
+ vrf_table_t *t;
- rmp->sessions = htonl (rc->sessions);
- rmp->translation_buckets = htonl (sm->translation_buckets);
-
- // OBSOLETE
- rmp->users = 0;
- rmp->user_buckets = 0;
- rmp->user_sessions = 0;
-
- rmp->timeouts.udp = htonl (sm->timeouts.udp);
- rmp->timeouts.tcp_established = htonl (sm->timeouts.tcp.established);
- rmp->timeouts.tcp_transitory = htonl (sm->timeouts.tcp.transitory);
- rmp->timeouts.icmp = htonl (sm->timeouts.icmp);
+ rp = vl_api_client_index_to_registration (mp->client_index);
+ if (rp == 0)
+ return;
- rmp->forwarding_enabled = sm->forwarding_enabled == 1;
- // consider how to split functionality between subplugins
- rmp->ipfix_logging_enabled = nat_ipfix_logging_enabled ();
- rmp->flags |= NAT44_IS_ENDPOINT_DEPENDENT;
- if (rc->static_mapping_only)
- rmp->flags |= NAT44_IS_STATIC_MAPPING_ONLY;
- if (rc->connection_tracking)
- rmp->flags |= NAT44_IS_CONNECTION_TRACKING;
- }));
+ pool_foreach (t, sm->vrf_tables)
+ {
+ nat44_ed_vrf_tables_send_details_v2 (rp, mp->context, t);
+ }
}
/* user (internal host) key */
@@ -1515,7 +1397,7 @@ nat_ed_user_create_helper (user_create_helper_t *uch, snat_session_t *s)
{
u = pool_elt_at_index (uch->users, value.value);
}
- if (snat_is_session_static (s))
+ if (nat44_ed_is_session_static (s))
{
++u->nstaticsessions;
}
@@ -1598,40 +1480,27 @@ send_nat44_user_session_details (snat_session_t * s,
clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
- if (snat_is_session_static (s))
+ if (nat44_ed_is_session_static (s))
rmp->flags |= NAT_API_IS_STATIC;
- if (is_twice_nat_session (s))
+ if (nat44_ed_is_twice_nat_session (s))
rmp->flags |= NAT_API_IS_TWICE_NAT;
- if (is_ed_session (s) || is_fwd_bypass_session (s))
- rmp->flags |= NAT_API_IS_EXT_HOST_VALID;
+ rmp->flags |= NAT_API_IS_EXT_HOST_VALID;
rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
rmp->total_pkts = ntohl (s->total_pkts);
rmp->context = context;
- if (snat_is_unk_proto_session (s))
- {
- rmp->outside_port = 0;
- rmp->inside_port = 0;
- rmp->protocol = ntohs (s->in2out.port);
- }
- else
+ rmp->outside_port = s->out2in.port;
+ rmp->inside_port = s->in2out.port;
+ rmp->protocol = clib_host_to_net_u16 (s->proto);
+ clib_memcpy (rmp->ext_host_address, &s->ext_host_addr, 4);
+ rmp->ext_host_port = s->ext_host_port;
+ if (nat44_ed_is_twice_nat_session (s))
{
- rmp->outside_port = s->out2in.port;
- rmp->inside_port = s->in2out.port;
- rmp->protocol = ntohs (nat_proto_to_ip_proto (s->nat_proto));
- }
- if (is_ed_session (s) || is_fwd_bypass_session (s))
- {
- clib_memcpy (rmp->ext_host_address, &s->ext_host_addr, 4);
- rmp->ext_host_port = s->ext_host_port;
- if (is_twice_nat_session (s))
- {
- clib_memcpy (rmp->ext_host_nat_address, &s->ext_host_nat_addr, 4);
- rmp->ext_host_nat_port = s->ext_host_nat_port;
- }
+ clib_memcpy (rmp->ext_host_nat_address, &s->ext_host_nat_addr, 4);
+ rmp->ext_host_nat_port = s->ext_host_nat_port;
}
vl_api_send_msg (reg, (u8 *) rmp);
@@ -1670,6 +1539,167 @@ vl_api_nat44_user_session_dump_t_handler (vl_api_nat44_user_session_dump_t *
}
}
+static void
+send_nat44_user_session_v2_details (snat_session_t *s,
+ vl_api_registration_t *reg, u32 context)
+{
+ vl_api_nat44_user_session_v2_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ vnet_main_t *vnm = vnet_get_main ();
+ u64 now = vlib_time_now (vnm->vlib_main);
+ u64 sess_timeout_time = 0;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id =
+ ntohs (VL_API_NAT44_USER_SESSION_V2_DETAILS + sm->msg_id_base);
+ clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
+ clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
+
+ if (nat44_ed_is_session_static (s))
+ rmp->flags |= NAT_API_IS_STATIC;
+
+ if (nat44_ed_is_twice_nat_session (s))
+ rmp->flags |= NAT_API_IS_TWICE_NAT;
+
+ rmp->flags |= NAT_API_IS_EXT_HOST_VALID;
+
+ rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
+ rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
+ rmp->total_pkts = ntohl (s->total_pkts);
+ rmp->context = context;
+ rmp->outside_port = s->out2in.port;
+ rmp->inside_port = s->in2out.port;
+ rmp->protocol = clib_host_to_net_u16 (s->proto);
+ clib_memcpy (rmp->ext_host_address, &s->ext_host_addr, 4);
+ rmp->ext_host_port = s->ext_host_port;
+ if (nat44_ed_is_twice_nat_session (s))
+ {
+ clib_memcpy (rmp->ext_host_nat_address, &s->ext_host_nat_addr, 4);
+ rmp->ext_host_nat_port = s->ext_host_nat_port;
+ }
+
+ sess_timeout_time = s->last_heard + nat44_session_get_timeout (sm, s);
+ rmp->is_timed_out = (now >= sess_timeout_time);
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+send_nat44_user_session_v3_details (snat_session_t *s,
+ vl_api_registration_t *reg, u32 context)
+{
+ vl_api_nat44_user_session_v3_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ u64 now = vlib_time_now (vlib_get_main ());
+ u64 sess_timeout_time = 0;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id =
+ ntohs (VL_API_NAT44_USER_SESSION_V3_DETAILS + sm->msg_id_base);
+ clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
+ clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
+
+ if (nat44_ed_is_session_static (s))
+ rmp->flags |= NAT_API_IS_STATIC;
+
+ if (nat44_ed_is_twice_nat_session (s))
+ rmp->flags |= NAT_API_IS_TWICE_NAT;
+
+ rmp->flags |= NAT_API_IS_EXT_HOST_VALID;
+
+ rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
+ rmp->time_since_last_heard =
+ clib_host_to_net_u64 ((u64) (now - s->last_heard));
+ rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
+ rmp->total_pkts = ntohl (s->total_pkts);
+ rmp->context = context;
+ rmp->outside_port = s->out2in.port;
+ rmp->inside_port = s->in2out.port;
+ rmp->protocol = clib_host_to_net_u16 (s->proto);
+ clib_memcpy (rmp->ext_host_address, &s->ext_host_addr, 4);
+ rmp->ext_host_port = s->ext_host_port;
+ if (nat44_ed_is_twice_nat_session (s))
+ {
+ clib_memcpy (rmp->ext_host_nat_address, &s->ext_host_nat_addr, 4);
+ rmp->ext_host_nat_port = s->ext_host_nat_port;
+ }
+
+ sess_timeout_time = s->last_heard + nat44_session_get_timeout (sm, s);
+ rmp->is_timed_out = (now >= sess_timeout_time);
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_nat44_user_session_v2_dump_t_handler (
+ vl_api_nat44_user_session_v2_dump_t *mp)
+{
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+ vl_api_registration_t *reg;
+ snat_user_key_t ukey;
+ snat_session_t *s;
+ ip4_header_t ip;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memcpy (&ukey.addr, mp->ip_address, 4);
+ ip.src_address.as_u32 = ukey.addr.as_u32;
+ ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
+ if (sm->num_workers > 1)
+ tsm = vec_elt_at_index (
+ sm->per_thread_data,
+ nat44_ed_get_in2out_worker_index (0, &ip, ukey.fib_index, 0));
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ pool_foreach (s, tsm->sessions)
+ {
+ if (s->in2out.addr.as_u32 == ukey.addr.as_u32)
+ {
+ send_nat44_user_session_v2_details (s, reg, mp->context);
+ }
+ }
+}
+
+static void
+vl_api_nat44_user_session_v3_dump_t_handler (
+ vl_api_nat44_user_session_v3_dump_t *mp)
+{
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+ vl_api_registration_t *reg;
+ snat_user_key_t ukey;
+ snat_session_t *s;
+ ip4_header_t ip;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memcpy (&ukey.addr, mp->ip_address, 4);
+ ip.src_address.as_u32 = ukey.addr.as_u32;
+ ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
+ if (sm->num_workers > 1)
+ tsm = vec_elt_at_index (
+ sm->per_thread_data,
+ nat44_ed_get_in2out_worker_index (0, &ip, ukey.fib_index, 0));
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ pool_foreach (s, tsm->sessions)
+ {
+ if (s->in2out.addr.as_u32 == ukey.addr.as_u32)
+ {
+ send_nat44_user_session_v3_details (s, reg, mp->context);
+ }
+ }
+}
+
/* API definitions */
#include <vnet/format_fns.h>
#include <nat/nat44-ed/nat44_ed.api.c>
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_classify.c b/src/plugins/nat/nat44-ed/nat44_ed_classify.c
index 5a9f4e42657..229cf3669e6 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_classify.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_classify.c
@@ -98,7 +98,6 @@ nat44_handoff_classify_node_fn_inline (vlib_main_t * vm,
u32 next0 = NAT_NEXT_IN2OUT_CLASSIFY;
ip4_header_t *ip0;
snat_address_t *ap;
- clib_bihash_kv_8_8_t kv0, value0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
@@ -122,23 +121,19 @@ nat44_handoff_classify_node_fn_inline (vlib_main_t * vm,
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv0, ip0->dst_address, 0, 0, 0);
/* try to classify the fragment based on IP header alone */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external,
- &kv0, &value0))
+ m = nat44_ed_sm_o2i_lookup (sm, ip0->dst_address, 0, 0, 0);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value0.value);
if (m->local_addr.as_u32 != m->external_addr.as_u32)
next0 = NAT_NEXT_OUT2IN_CLASSIFY;
goto enqueue0;
}
- init_nat_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, 0,
- ip_proto_to_nat_proto (ip0->protocol));
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv0, &value0))
+ m = nat44_ed_sm_o2i_lookup (
+ sm, ip0->dst_address, vnet_buffer (b0)->ip.reass.l4_dst_port,
+ 0, ip0->protocol);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value0.value);
if (m->local_addr.as_u32 != m->external_addr.as_u32)
next0 = NAT_NEXT_OUT2IN_CLASSIFY;
}
@@ -202,7 +197,6 @@ nat44_ed_classify_node_fn_inline (vlib_main_t * vm,
u32 sw_if_index0, rx_fib_index0;
ip4_header_t *ip0;
snat_address_t *ap;
- clib_bihash_kv_8_8_t kv0, value0;
clib_bihash_kv_16_8_t ed_kv0, ed_value0;
/* speculatively enqueue b0 to the current next frame */
@@ -227,11 +221,11 @@ nat44_ed_classify_node_fn_inline (vlib_main_t * vm,
rx_fib_index0 =
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
sw_if_index0);
- init_ed_k (&ed_kv0, ip0->src_address,
+ init_ed_k (&ed_kv0, ip0->src_address.as_u32,
vnet_buffer (b0)->ip.reass.l4_src_port,
- ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- rx_fib_index0, ip0->protocol);
+ ip0->dst_address.as_u32,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0,
+ ip0->protocol);
/* process whole packet */
if (!clib_bihash_search_16_8 (&sm->flow_hash, &ed_kv0,
&ed_value0))
@@ -272,23 +266,19 @@ nat44_ed_classify_node_fn_inline (vlib_main_t * vm,
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv0, ip0->dst_address, 0, 0, 0);
/* try to classify the fragment based on IP header alone */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external,
- &kv0, &value0))
+ m = nat44_ed_sm_o2i_lookup (sm, ip0->dst_address, 0, 0, 0);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value0.value);
if (m->local_addr.as_u32 != m->external_addr.as_u32)
next0 = NAT_NEXT_OUT2IN_ED_FAST_PATH;
goto enqueue0;
}
- init_nat_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, 0,
- ip_proto_to_nat_proto (ip0->protocol));
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv0, &value0))
+ m = nat44_ed_sm_o2i_lookup (
+ sm, ip0->dst_address, vnet_buffer (b0)->ip.reass.l4_dst_port,
+ 0, ip0->protocol);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value0.value);
if (m->local_addr.as_u32 != m->external_addr.as_u32)
next0 = NAT_NEXT_OUT2IN_ED_FAST_PATH;
}
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_cli.c b/src/plugins/nat/nat44-ed/nat44_ed_cli.c
index acf9069af2b..14313d05a35 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_cli.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_cli.c
@@ -38,23 +38,15 @@ nat44_ed_enable_disable_command_fn (vlib_main_t *vm, unformat_input_t *input,
clib_error_t *error = 0;
nat44_config_t c = { 0 };
- u8 enable_set = 0, enable = 0, mode_set = 0;
+ u8 enable_set = 0, enable = 0;
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- if (!mode_set && unformat (line_input, "static-mapping-only"))
- {
- mode_set = 1;
- c.static_mapping_only = 1;
- if (unformat (line_input, "connection-tracking"))
- {
- c.connection_tracking = 1;
- }
- }
- else if (unformat (line_input, "inside-vrf %u", &c.inside_vrf));
+ if (unformat (line_input, "inside-vrf %u", &c.inside_vrf))
+ ;
else if (unformat (line_input, "outside-vrf %u", &c.outside_vrf));
else if (unformat (line_input, "sessions %u", &c.sessions));
else if (!enable_set)
@@ -116,7 +108,6 @@ set_workers_command_fn (vlib_main_t * vm,
int rv = 0;
clib_error_t *error = 0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -162,8 +153,8 @@ done:
}
static clib_error_t *
-nat_show_workers_commnad_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd)
+nat_show_workers_command_fn (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
{
snat_main_t *sm = &snat_main;
u32 *worker;
@@ -189,10 +180,9 @@ snat_set_log_level_command_fn (vlib_main_t * vm,
{
unformat_input_t _line_input, *line_input = &_line_input;
snat_main_t *sm = &snat_main;
- u8 log_level = NAT_LOG_NONE;
+ u32 log_level = NAT_LOG_NONE;
clib_error_t *error = 0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -283,12 +273,7 @@ nat44_show_hash_command_fn (vlib_main_t * vm, unformat_input_t * input,
else if (unformat (input, "verbose"))
verbose = 2;
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->static_mapping_by_local,
- verbose);
- vlib_cli_output (vm, "%U",
- format_bihash_8_8, &sm->static_mapping_by_external,
- verbose);
- vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->flow_hash, verbose);
+ vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->flow_hash, verbose);
vec_foreach_index (i, sm->per_thread_data)
{
vlib_cli_output (vm, "-------- thread %d %s --------\n",
@@ -296,8 +281,7 @@ nat44_show_hash_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->flow_hash, verbose);
}
- vlib_cli_output (vm, "%U", format_bihash_16_8, &nam->affinity_hash,
- verbose);
+ vlib_cli_output (vm, "%U", format_bihash_16_8, &nam->affinity_hash, verbose);
vlib_cli_output (vm, "-------- hash table parameters --------\n");
vlib_cli_output (vm, "translation buckets: %u", sm->translation_buckets);
@@ -313,7 +297,6 @@ nat_set_mss_clamping_command_fn (vlib_main_t * vm, unformat_input_t * input,
clib_error_t *error = 0;
u32 mss;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -356,7 +339,6 @@ add_address_command_fn (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
ip4_address_t start_addr, end_addr, this_addr;
u32 start_host_order, end_host_order;
u32 vrf_id = ~0;
@@ -366,7 +348,6 @@ add_address_command_fn (vlib_main_t * vm,
clib_error_t *error = 0;
u8 twice_nat = 0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -392,12 +373,6 @@ add_address_command_fn (vlib_main_t * vm,
}
}
- if (sm->static_mapping_only)
- {
- error = clib_error_return (0, "static mapping only mode");
- goto done;
- }
-
start_host_order = clib_host_to_net_u32 (start_addr.as_u32);
end_host_order = clib_host_to_net_u32 (end_addr.as_u32);
@@ -419,9 +394,13 @@ add_address_command_fn (vlib_main_t * vm,
for (i = 0; i < count; i++)
{
if (is_add)
- rv = snat_add_address (sm, &this_addr, vrf_id, twice_nat);
+ {
+ rv = nat44_ed_add_address (&this_addr, vrf_id, twice_nat);
+ }
else
- rv = snat_del_address (sm, this_addr, 0, twice_nat);
+ {
+ rv = nat44_ed_del_address (this_addr, twice_nat);
+ }
switch (rv)
{
@@ -495,15 +474,12 @@ nat44_show_summary_command_fn (vlib_main_t * vm, unformat_input_t * input,
u64 now = vlib_time_now (vm);
u64 sess_timeout_time = 0;
- u32 udp_sessions = 0;
- u32 tcp_sessions = 0;
- u32 icmp_sessions = 0;
-
- u32 timed_out = 0;
- u32 transitory = 0;
- u32 transitory_wait_closed = 0;
- u32 transitory_closed = 0;
- u32 established = 0;
+ struct
+ {
+ u32 total;
+ u32 timed_out;
+ } udp = { 0 }, tcp = { 0 }, tcp_established = { 0 }, tcp_transitory = { 0 },
+ icmp = { 0 }, other = { 0 };
u32 fib;
@@ -517,45 +493,48 @@ nat44_show_summary_command_fn (vlib_main_t * vm, unformat_input_t * input,
{
pool_foreach (s, tsm->sessions)
{
- sess_timeout_time = s->last_heard +
- (f64) nat44_session_get_timeout (sm, s);
- if (now >= sess_timeout_time)
- timed_out++;
-
- switch (s->nat_proto)
- {
- case NAT_PROTOCOL_ICMP:
- icmp_sessions++;
- break;
- case NAT_PROTOCOL_TCP:
- tcp_sessions++;
- if (s->state)
- {
- if (s->tcp_closed_timestamp)
- {
- if (now >= s->tcp_closed_timestamp)
- {
- ++transitory_closed;
- }
- else
- {
- ++transitory_wait_closed;
- }
- }
- transitory++;
- }
- else
- established++;
- break;
- case NAT_PROTOCOL_UDP:
- default:
- udp_sessions++;
- break;
- }
- }
- nat44_show_lru_summary (vm, tsm, now, sess_timeout_time);
- count += pool_elts (tsm->sessions);
- }
+ sess_timeout_time =
+ s->last_heard + (f64) nat44_session_get_timeout (sm, s);
+
+ switch (s->proto)
+ {
+ case IP_PROTOCOL_ICMP:
+ ++icmp.total;
+ if (now >= sess_timeout_time)
+ ++icmp.timed_out;
+ break;
+ case IP_PROTOCOL_TCP:
+ ++tcp.total;
+ if (now >= sess_timeout_time)
+ ++tcp.timed_out;
+ if (nat44_ed_tcp_is_established (s->tcp_state))
+ {
+ ++tcp_established.total;
+ if (now >= sess_timeout_time)
+ ++tcp_established.timed_out;
+ }
+ else
+ {
+ ++tcp_transitory.total;
+ if (now >= sess_timeout_time)
+ ++tcp_transitory.timed_out;
+ }
+ break;
+ case IP_PROTOCOL_UDP:
+ ++udp.total;
+ if (now >= sess_timeout_time)
+ ++udp.timed_out;
+ break;
+ default:
+ ++other.total;
+ if (now >= sess_timeout_time)
+ ++other.timed_out;
+ break;
+ }
+ }
+ nat44_show_lru_summary (vm, tsm, now, sess_timeout_time);
+ count += pool_elts (tsm->sessions);
+ }
}
else
{
@@ -564,55 +543,66 @@ nat44_show_summary_command_fn (vlib_main_t * vm, unformat_input_t * input,
{
sess_timeout_time = s->last_heard +
(f64) nat44_session_get_timeout (sm, s);
- if (now >= sess_timeout_time)
- timed_out++;
-
- switch (s->nat_proto)
- {
- case NAT_PROTOCOL_ICMP:
- icmp_sessions++;
- break;
- case NAT_PROTOCOL_TCP:
- tcp_sessions++;
- if (s->state)
- {
- if (s->tcp_closed_timestamp)
- {
- if (now >= s->tcp_closed_timestamp)
- {
- ++transitory_closed;
- }
- else
- {
- ++transitory_wait_closed;
- }
- }
- transitory++;
- }
- else
- established++;
- break;
- case NAT_PROTOCOL_UDP:
- default:
- udp_sessions++;
- break;
- }
+
+ switch (s->proto)
+ {
+ case IP_PROTOCOL_ICMP:
+ ++icmp.total;
+ if (now >= sess_timeout_time)
+ ++icmp.timed_out;
+ break;
+ case IP_PROTOCOL_TCP:
+ ++tcp.total;
+ if (now >= sess_timeout_time)
+ ++tcp.timed_out;
+ if (nat44_ed_tcp_is_established (s->tcp_state))
+ {
+ ++tcp_established.total;
+ if (now >= sess_timeout_time)
+ ++tcp_established.timed_out;
+ }
+ else
+ {
+ ++tcp_transitory.total;
+ if (now >= sess_timeout_time)
+ ++tcp_transitory.timed_out;
+ }
+ break;
+ case IP_PROTOCOL_UDP:
+ ++udp.total;
+ if (now >= sess_timeout_time)
+ ++udp.timed_out;
+ break;
+ default:
+ ++other.total;
+ if (now >= sess_timeout_time)
+ ++other.timed_out;
+ break;
+ }
}
nat44_show_lru_summary (vm, tsm, now, sess_timeout_time);
count = pool_elts (tsm->sessions);
}
- vlib_cli_output (vm, "total timed out sessions: %u", timed_out);
- vlib_cli_output (vm, "total sessions: %u", count);
- vlib_cli_output (vm, "total tcp sessions: %u", tcp_sessions);
- vlib_cli_output (vm, "total tcp established sessions: %u", established);
- vlib_cli_output (vm, "total tcp transitory sessions: %u", transitory);
- vlib_cli_output (vm, "total tcp transitory (WAIT-CLOSED) sessions: %u",
- transitory_wait_closed);
- vlib_cli_output (vm, "total tcp transitory (CLOSED) sessions: %u",
- transitory_closed);
- vlib_cli_output (vm, "total udp sessions: %u", udp_sessions);
- vlib_cli_output (vm, "total icmp sessions: %u", icmp_sessions);
+ u32 timed_out =
+ tcp.timed_out + icmp.timed_out + udp.timed_out + other.timed_out;
+ vlib_cli_output (vm, "total sessions: %u (timed out: %u)", count, timed_out);
+ vlib_cli_output (vm, "tcp sessions:");
+ vlib_cli_output (vm, " total: %u (timed out: %u)", tcp.total,
+ tcp.timed_out);
+ vlib_cli_output (vm, " established: %u (timed out: %u)",
+ tcp_established.total, tcp_established.timed_out);
+ vlib_cli_output (vm, " transitory: %u (timed out: %u)",
+ tcp_transitory.total, tcp_transitory.timed_out);
+ vlib_cli_output (vm, "udp sessions:");
+ vlib_cli_output (vm, " total: %u (timed out: %u)", udp.total,
+ udp.timed_out);
+ vlib_cli_output (vm, "icmp sessions:");
+ vlib_cli_output (vm, " total: %u (timed out: %u)", icmp.total,
+ icmp.timed_out);
+ vlib_cli_output (vm, "other sessions:");
+ vlib_cli_output (vm, " total: %u (timed out: %u)", other.total,
+ other.timed_out);
return 0;
}
@@ -628,14 +618,14 @@ nat44_show_addresses_command_fn (vlib_main_t * vm, unformat_input_t * input,
{
vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr);
if (ap->fib_index != ~0)
- vlib_cli_output (vm, " tenant VRF: %u",
- fib_table_get(ap->fib_index, FIB_PROTOCOL_IP4)->ft_table_id);
+ vlib_cli_output (
+ vm, " tenant VRF: %u",
+ fib_table_get (ap->fib_index, FIB_PROTOCOL_IP4)->ft_table_id);
else
vlib_cli_output (vm, " tenant VRF independent");
- #define _(N, i, n, s) \
- vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s);
- foreach_nat_protocol
- #undef _
+
+ if (ap->addr_len != ~0)
+ vlib_cli_output (vm, " synced with interface address");
}
vlib_cli_output (vm, "NAT44 twice-nat pool addresses:");
vec_foreach (ap, sm->twice_nat_addresses)
@@ -646,10 +636,9 @@ nat44_show_addresses_command_fn (vlib_main_t * vm, unformat_input_t * input,
fib_table_get(ap->fib_index, FIB_PROTOCOL_IP4)->ft_table_id);
else
vlib_cli_output (vm, " tenant VRF independent");
- #define _(N, i, n, s) \
- vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s);
- foreach_nat_protocol
- #undef _
+
+ if (ap->addr_len != ~0)
+ vlib_cli_output (vm, " synced with interface address");
}
return 0;
}
@@ -669,7 +658,6 @@ snat_feature_command_fn (vlib_main_t * vm,
sw_if_index = ~0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -804,21 +792,22 @@ nat44_show_interfaces_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_output (vm, "NAT44 interfaces:");
pool_foreach (i, sm->interfaces)
{
- vlib_cli_output (vm, " %U %s", format_vnet_sw_if_index_name, vnm,
- i->sw_if_index,
- (nat_interface_is_inside(i) &&
- nat_interface_is_outside(i)) ? "in out" :
- (nat_interface_is_inside(i) ? "in" : "out"));
+ vlib_cli_output (vm, " %U %s", format_vnet_sw_if_index_name, vnm,
+ i->sw_if_index,
+ (nat44_ed_is_interface_inside (i) &&
+ nat44_ed_is_interface_outside (i)) ?
+ "in out" :
+ (nat44_ed_is_interface_inside (i) ? "in" : "out"));
}
pool_foreach (i, sm->output_feature_interfaces)
{
- vlib_cli_output (vm, " %U output-feature %s",
- format_vnet_sw_if_index_name, vnm,
- i->sw_if_index,
- (nat_interface_is_inside(i) &&
- nat_interface_is_outside(i)) ? "in out" :
- (nat_interface_is_inside(i) ? "in" : "out"));
+ vlib_cli_output (vm, " %U output-feature %s",
+ format_vnet_sw_if_index_name, vnm, i->sw_if_index,
+ (nat44_ed_is_interface_inside (i) &&
+ nat44_ed_is_interface_outside (i)) ?
+ "in out" :
+ (nat44_ed_is_interface_inside (i) ? "in" : "out"));
}
return 0;
@@ -832,14 +821,13 @@ add_static_mapping_command_fn (vlib_main_t * vm,
unformat_input_t _line_input, *line_input = &_line_input;
vnet_main_t *vnm = vnet_get_main ();
clib_error_t *error = 0;
- int rv;
-
- nat_protocol_t proto = NAT_PROTOCOL_OTHER;
ip4_address_t l_addr, e_addr, pool_addr;
u32 l_port = 0, e_port = 0, vrf_id = ~0;
u8 l_port_set = 0, e_port_set = 0;
- u32 sw_if_index, flags = 0;
- int is_add = 1;
+ int is_add = 1, rv;
+ u32 flags = 0;
+ u32 sw_if_index = ~0;
+ ip_protocol_t proto = 0;
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -881,7 +869,7 @@ add_static_mapping_command_fn (vlib_main_t * vm,
}
else if (unformat (line_input, "vrf %u", &vrf_id))
;
- else if (unformat (line_input, "%U", unformat_nat_protocol, &proto))
+ else if (unformat (line_input, "%U", unformat_ip_protocol, &proto))
;
else if (unformat (line_input, "self-twice-nat"))
{
@@ -923,8 +911,6 @@ add_static_mapping_command_fn (vlib_main_t * vm,
e_port = clib_host_to_net_u16 (e_port);
}
- // TODO: specific pool_addr for both pool & twice nat pool ?
-
if (is_add)
{
rv =
@@ -937,25 +923,17 @@ add_static_mapping_command_fn (vlib_main_t * vm,
vrf_id, sw_if_index, flags);
}
- // TODO: fix returns
-
switch (rv)
{
- case VNET_API_ERROR_INVALID_VALUE:
- error = clib_error_return (0, "External port already in use.");
- goto done;
+ case VNET_API_ERROR_UNSUPPORTED:
+ error = clib_error_return (0, "Plugin disabled.");
+ break;
case VNET_API_ERROR_NO_SUCH_ENTRY:
- if (is_add)
- error = clib_error_return (0, "External address must be allocated.");
- else
- error = clib_error_return (0, "Mapping not exist.");
- goto done;
- case VNET_API_ERROR_NO_SUCH_FIB:
- error = clib_error_return (0, "No such VRF id.");
- goto done;
+ error = clib_error_return (0, "Mapping not exist.");
+ break;
case VNET_API_ERROR_VALUE_EXIST:
error = clib_error_return (0, "Mapping already exist.");
- goto done;
+ break;
default:
break;
}
@@ -966,7 +944,6 @@ done:
return error;
}
-// TODO: either delete this bullshit or update it
static clib_error_t *
add_identity_mapping_command_fn (vlib_main_t * vm,
unformat_input_t * input,
@@ -978,12 +955,11 @@ add_identity_mapping_command_fn (vlib_main_t * vm,
int rv, is_add = 1, port_set = 0;
u32 sw_if_index, port, flags, vrf_id = ~0;
- nat_protocol_t proto;
+ ip_protocol_t proto = 0;
ip4_address_t addr;
flags = NAT_SM_FLAG_IDENTITY_NAT;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -998,7 +974,7 @@ add_identity_mapping_command_fn (vlib_main_t * vm,
}
else if (unformat (line_input, "vrf %u", &vrf_id))
;
- else if (unformat (line_input, "%U %u", unformat_nat_protocol, &proto,
+ else if (unformat (line_input, "%U %u", unformat_ip_protocol, &proto,
&port))
{
port_set = 1;
@@ -1036,25 +1012,17 @@ add_identity_mapping_command_fn (vlib_main_t * vm,
sw_if_index, flags);
}
- // TODO: fix returns
-
switch (rv)
{
- case VNET_API_ERROR_INVALID_VALUE:
- error = clib_error_return (0, "External port already in use.");
- goto done;
+ case VNET_API_ERROR_UNSUPPORTED:
+ error = clib_error_return (0, "Plugin disabled.");
+ break;
case VNET_API_ERROR_NO_SUCH_ENTRY:
- if (is_add)
- error = clib_error_return (0, "External address must be allocated.");
- else
- error = clib_error_return (0, "Mapping not exist.");
- goto done;
- case VNET_API_ERROR_NO_SUCH_FIB:
- error = clib_error_return (0, "No such VRF id.");
- goto done;
+ error = clib_error_return (0, "Mapping not exist.");
+ break;
case VNET_API_ERROR_VALUE_EXIST:
error = clib_error_return (0, "Mapping already exist.");
- goto done;
+ break;
default:
break;
}
@@ -1075,12 +1043,11 @@ add_lb_static_mapping_command_fn (vlib_main_t * vm,
ip4_address_t l_addr, e_addr;
u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0, affinity = 0;
u8 proto_set = 0;
- nat_protocol_t proto;
+ ip_protocol_t proto;
nat44_lb_addr_port_t *locals = 0, local;
int rv, is_add = 1;
u32 flags = 0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -1091,6 +1058,7 @@ add_lb_static_mapping_command_fn (vlib_main_t * vm,
{
clib_memset (&local, 0, sizeof (local));
local.addr = l_addr;
+ l_port = clib_host_to_net_u16 (l_port);
local.port = (u16) l_port;
local.probability = (u8) probability;
vec_add1 (locals, local);
@@ -1101,6 +1069,7 @@ add_lb_static_mapping_command_fn (vlib_main_t * vm,
{
clib_memset (&local, 0, sizeof (local));
local.addr = l_addr;
+ l_port = clib_host_to_net_u16 (l_port);
local.port = (u16) l_port;
local.probability = (u8) probability;
local.vrf_id = vrf_id;
@@ -1108,8 +1077,10 @@ add_lb_static_mapping_command_fn (vlib_main_t * vm,
}
else if (unformat (line_input, "external %U:%u", unformat_ip4_address,
&e_addr, &e_port))
- ;
- else if (unformat (line_input, "protocol %U", unformat_nat_protocol,
+ {
+ e_port = clib_host_to_net_u16 (e_port);
+ }
+ else if (unformat (line_input, "protocol %U", unformat_ip_protocol,
&proto))
{
proto_set = 1;
@@ -1197,10 +1168,9 @@ add_lb_backend_command_fn (vlib_main_t * vm,
u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0;
int is_add = 1;
int rv;
- nat_protocol_t proto;
+ ip_protocol_t proto;
u8 proto_set = 0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
@@ -1216,7 +1186,7 @@ add_lb_backend_command_fn (vlib_main_t * vm,
else if (unformat (line_input, "external %U:%u", unformat_ip4_address,
&e_addr, &e_port))
;
- else if (unformat (line_input, "protocol %U", unformat_nat_protocol,
+ else if (unformat (line_input, "protocol %U", unformat_ip_protocol,
&proto))
proto_set = 1;
else if (unformat (line_input, "del"))
@@ -1276,14 +1246,14 @@ nat44_show_static_mappings_command_fn (vlib_main_t * vm,
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
- snat_static_map_resolve_t *rp;
+ snat_static_mapping_resolve_t *rp;
vlib_cli_output (vm, "NAT44 static mappings:");
pool_foreach (m, sm->static_mappings)
{
vlib_cli_output (vm, " %U", format_snat_static_mapping, m);
}
- vec_foreach (rp, sm->to_resolve)
+ vec_foreach (rp, sm->sm_to_resolve)
vlib_cli_output (vm, " %U", format_snat_static_map_to_resolve, rp);
return 0;
@@ -1294,27 +1264,31 @@ snat_add_interface_address_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
- snat_main_t *sm = &snat_main;
unformat_input_t _line_input, *line_input = &_line_input;
- u32 sw_if_index;
- int rv;
- int is_del = 0;
+ vnet_main_t *vnm = vnet_get_main ();
clib_error_t *error = 0;
+ int rv, is_del = 0;
u8 twice_nat = 0;
+ u32 sw_if_index;
+
+ sw_if_index = ~0;
- /* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (line_input, "%U", unformat_vnet_sw_interface,
- sm->vnet_main, &sw_if_index))
+ if (unformat (line_input, "%U", unformat_vnet_sw_interface, vnm,
+ &sw_if_index))
;
else if (unformat (line_input, "twice-nat"))
- twice_nat = 1;
+ {
+ twice_nat = 1;
+ }
else if (unformat (line_input, "del"))
- is_del = 1;
+ {
+ is_del = 1;
+ }
else
{
error = clib_error_return (0, "unknown input '%U'",
@@ -1323,19 +1297,86 @@ snat_add_interface_address_command_fn (vlib_main_t * vm,
}
}
- rv = snat_add_interface_address (sm, sw_if_index, is_del, twice_nat);
+ if (is_del)
+ {
+ rv = nat44_ed_del_interface_address (sw_if_index, twice_nat);
+ }
+ else
+ {
+ rv = nat44_ed_add_interface_address (sw_if_index, twice_nat);
+ }
- switch (rv)
+ if (0 != rv)
{
- case 0:
- break;
+ error =
+ clib_error_return (0, "%s %U address failed", is_del ? "del" : "add",
+ format_vnet_sw_if_index_name, vnm, sw_if_index);
+ goto done;
+ }
- default:
- error = clib_error_return (0, "snat_add_interface_address returned %d",
- rv);
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+nat44_ed_add_del_vrf_table_command_fn (vlib_main_t *vm,
+ unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ bool is_add = true, not_set = true;
+ u32 vrf_id = ~0;
+ int rv;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%u", &vrf_id))
+ ;
+ else if (not_set)
+ {
+ if (unformat (line_input, "add"))
+ {
+ is_add = true;
+ }
+ else if (unformat (line_input, "del"))
+ {
+ is_add = false;
+ }
+ not_set = false;
+ }
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ if (not_set)
+ {
+ error = clib_error_return (0, "missing required parameter");
+ goto done;
+ }
+
+ if (~0 == vrf_id)
+ {
+ error = clib_error_return (0, "missing vrf id");
goto done;
}
+ rv = nat44_ed_add_del_vrf_table (vrf_id, is_add);
+ if (rv)
+ {
+ error = clib_error_return (0, "%s vrf table returned %d",
+ is_add ? "add" : "del", rv);
+ }
+
done:
unformat_free (line_input);
@@ -1343,27 +1384,107 @@ done:
}
static clib_error_t *
+nat44_ed_add_del_vrf_route_command_fn (vlib_main_t *vm,
+ unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ bool is_add = true, not_set = true;
+ u32 vrf_id = ~0, table_vrf_id = ~0;
+ int rv;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT);
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "table %u", &table_vrf_id))
+ ;
+ else if (unformat (line_input, "%u", &vrf_id))
+ ;
+ else if (not_set)
+ {
+ if (unformat (line_input, "add"))
+ {
+ is_add = true;
+ }
+ else if (unformat (line_input, "del"))
+ {
+ is_add = false;
+ }
+ not_set = false;
+ }
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ if (not_set)
+ {
+ error = clib_error_return (0, "missing required parameter");
+ goto done;
+ }
+
+ if ((~0 == vrf_id) || (~0 == table_vrf_id))
+ {
+ error = clib_error_return (0, "missing vrf id");
+ goto done;
+ }
+
+ rv = nat44_ed_add_del_vrf_route (table_vrf_id, vrf_id, is_add);
+ if (rv)
+ {
+ error = clib_error_return (0, "%s vrf table returned %d",
+ is_add ? "add" : "del", rv);
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+nat44_ed_show_vrf_tables_command_fn (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t;
+ vrf_route_t *r;
+ int i = 0;
+
+ pool_foreach (t, sm->vrf_tables)
+ {
+ vlib_cli_output (vm, "table %u:", t->table_vrf_id);
+ pool_foreach (r, t->routes)
+ {
+ vlib_cli_output (vm, "[%u] vrf-id %u", i, r->vrf_id);
+ i++;
+ }
+ }
+
+ return 0;
+}
+
+static clib_error_t *
nat44_show_interface_address_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
snat_main_t *sm = &snat_main;
vnet_main_t *vnm = vnet_get_main ();
- u32 *sw_if_index;
+ snat_address_resolve_t *ap;
vlib_cli_output (vm, "NAT44 pool address interfaces:");
- vec_foreach (sw_if_index, sm->auto_add_sw_if_indices)
- {
- vlib_cli_output (vm, " %U", format_vnet_sw_if_index_name, vnm,
- *sw_if_index);
- }
- vlib_cli_output (vm, "NAT44 twice-nat pool address interfaces:");
- vec_foreach (sw_if_index, sm->auto_add_sw_if_indices_twice_nat)
+ vec_foreach (ap, sm->addr_to_resolve)
{
- vlib_cli_output (vm, " %U", format_vnet_sw_if_index_name, vnm,
- *sw_if_index);
+ vlib_cli_output (vm, " %U%s", format_vnet_sw_if_index_name, vnm,
+ ap->sw_if_index, ap->is_twice_nat ? " twice-nat" : "");
}
-
return 0;
}
@@ -1375,22 +1496,61 @@ nat44_show_sessions_command_fn (vlib_main_t * vm, unformat_input_t * input,
clib_error_t *error = 0;
snat_main_per_thread_data_t *tsm;
snat_main_t *sm = &snat_main;
-
- int i = 0;
+ ip4_address_t i2o_sa, i2o_da, o2i_sa, o2i_da;
+ u8 filter_i2o_sa = 0, filter_i2o_da = 0;
+ u8 filter_o2i_sa = 0, filter_o2i_da = 0;
+ u16 i2o_sp, i2o_dp, o2i_sp, o2i_dp;
+ u8 filter_i2o_sp = 0, filter_i2o_dp = 0;
+ u8 filter_o2i_sp = 0, filter_o2i_dp = 0;
+ ip_protocol_t proto;
+ u8 filter_proto = 0;
+ u8 had_input = 1, filtering = 0;
+ int i = 0, showed_sessions;
if (!unformat_user (input, unformat_line_input, line_input))
- goto print;
+ {
+ had_input = 0;
+ goto print;
+ }
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- break;
+ if (unformat (line_input, "filter i2o saddr %U", unformat_ip4_address,
+ &i2o_sa))
+ filter_i2o_sa = filtering = 1;
+ else if (unformat (line_input, "filter i2o daddr %U",
+ unformat_ip4_address, &i2o_da))
+ filter_i2o_da = filtering = 1;
+ else if (unformat (line_input, "filter o2i saddr %U",
+ unformat_ip4_address, &o2i_sa))
+ filter_o2i_sa = filtering = 1;
+ else if (unformat (line_input, "filter o2i daddr %U",
+ unformat_ip4_address, &o2i_da))
+ filter_o2i_da = filtering = 1;
+ else if (unformat (line_input, "filter i2o sport %u", &i2o_sp))
+ filter_i2o_sp = filtering = 1;
+ else if (unformat (line_input, "filter i2o dport %u", &i2o_dp))
+ filter_i2o_dp = filtering = 1;
+ else if (unformat (line_input, "filter o2i sport %u", &o2i_sp))
+ filter_o2i_sp = filtering = 1;
+ else if (unformat (line_input, "filter o2i dport %u", &o2i_dp))
+ filter_o2i_dp = filtering = 1;
+ else if (unformat (line_input, "filter i2o proto %U",
+ unformat_ip_protocol, &proto))
+ filter_proto = filtering = 1;
+ else if (unformat (line_input, "filter o2i proto %U",
+ unformat_ip_protocol, &proto))
+ filter_proto = filtering = 1;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
}
- unformat_free (line_input);
print:
- vlib_cli_output (vm, "NAT44 ED sessions:");
+ vlib_cli_output (vm, "NAT44 ED sessions:");
vec_foreach_index (i, sm->per_thread_data)
{
@@ -1400,12 +1560,53 @@ print:
i, vlib_worker_threads[i].name,
pool_elts (tsm->sessions));
- snat_session_t *s;
- pool_foreach (s, tsm->sessions)
- {
- vlib_cli_output (vm, " %U\n", format_snat_session, tsm, s);
- }
+ showed_sessions = 0;
+ snat_session_t *s;
+ pool_foreach (s, tsm->sessions)
+ {
+ if (filtering)
+ {
+ if (filter_i2o_sa && i2o_sa.as_u32 != s->i2o.match.saddr.as_u32)
+ continue;
+ if (filter_i2o_da && i2o_da.as_u32 != s->i2o.match.daddr.as_u32)
+ continue;
+ if (filter_o2i_sa && o2i_sa.as_u32 != s->o2i.match.saddr.as_u32)
+ continue;
+ if (filter_o2i_da && o2i_da.as_u32 != s->o2i.match.daddr.as_u32)
+ continue;
+ if (filter_i2o_sp &&
+ i2o_sp != clib_net_to_host_u16 (s->i2o.match.sport))
+ continue;
+ if (filter_i2o_dp &&
+ i2o_dp != clib_net_to_host_u16 (s->i2o.match.dport))
+ continue;
+ if (filter_o2i_sp &&
+ o2i_sp != clib_net_to_host_u16 (s->o2i.match.sport))
+ continue;
+ if (filter_o2i_dp &&
+ o2i_dp != clib_net_to_host_u16 (s->o2i.match.dport))
+ continue;
+ if (filter_proto && proto != s->proto)
+ continue;
+ showed_sessions++;
+ }
+ vlib_cli_output (vm, " %U\n", format_snat_session, sm, tsm, s,
+ vlib_time_now (vm));
+ }
+ if (filtering)
+ {
+ vlib_cli_output (vm,
+ "Showed: %d, Filtered: %d of total %d "
+ "sessions of thread %d\n\n",
+ showed_sessions,
+ pool_elts (tsm->sessions) - showed_sessions,
+ pool_elts (tsm->sessions), i);
+ }
}
+
+done:
+ if (had_input)
+ unformat_free (line_input);
return error;
}
@@ -1457,7 +1658,7 @@ nat44_del_session_command_fn (vlib_main_t * vm,
u32 port = 0, eh_port = 0, vrf_id = sm->outside_vrf_id;
clib_error_t *error = 0;
ip4_address_t addr, eh_addr;
- nat_protocol_t proto;
+ ip_protocol_t proto;
int is_in = 0;
int rv;
@@ -1466,9 +1667,8 @@ nat44_del_session_command_fn (vlib_main_t * vm,
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat
- (line_input, "%U:%u %U", unformat_ip4_address, &addr, &port,
- unformat_nat_protocol, &proto))
+ if (unformat (line_input, "%U:%u %U", unformat_ip4_address, &addr, &port,
+ unformat_ip_protocol, &proto))
;
else if (unformat (line_input, "in"))
{
@@ -1493,10 +1693,9 @@ nat44_del_session_command_fn (vlib_main_t * vm,
}
}
- rv =
- nat44_del_ed_session (sm, &addr, clib_host_to_net_u16 (port), &eh_addr,
- clib_host_to_net_u16 (eh_port),
- nat_proto_to_ip_proto (proto), vrf_id, is_in);
+ rv = nat44_ed_del_session (sm, &addr, clib_host_to_net_u16 (port), &eh_addr,
+ clib_host_to_net_u16 (eh_port), proto, vrf_id,
+ is_in);
switch (rv)
{
@@ -1648,21 +1847,19 @@ done:
* @cliexstart{nat44}
* Enable nat44 plugin
* To enable nat44-ed, use:
- * vpp# nat44 enable
+ * vpp# nat44 plugin enable
* To disable nat44-ed, use:
- * vpp# nat44 disable
- * To enable nat44-ed static mapping with connection tracking, use:
- * vpp# nat44-ed enable static-mapping connection-tracking
+ * vpp# nat44 plugin disable
* To set inside-vrf outside-vrf, use:
- * vpp# nat44 enable inside-vrf <id> outside-vrf <id>
+ * vpp# nat44 plugin enable inside-vrf <id> outside-vrf <id>
* @cliexend
?*/
VLIB_CLI_COMMAND (nat44_ed_enable_disable_command, static) = {
- .path = "nat44",
- .short_help = "nat44 <enable [sessions <max-number>] [static-mapping-only "
- "connection-tracking] [inside-vrf <vrf-id>] "
- "[outside-vrf <vrf-id>]>|disable",
+ .path = "nat44 plugin",
.function = nat44_ed_enable_disable_command_fn,
+ .short_help =
+ "nat44 plugin <enable [sessions <max-number>] [inside-vrf <vrf-id>] "
+ "[outside-vrf <vrf-id>]>|disable",
};
/*?
@@ -1691,7 +1888,7 @@ VLIB_CLI_COMMAND (set_workers_command, static) = {
VLIB_CLI_COMMAND (nat_show_workers_command, static) = {
.path = "show nat workers",
.short_help = "show nat workers",
- .function = nat_show_workers_commnad_fn,
+ .function = nat_show_workers_command_fn,
};
/*?
@@ -2019,9 +2216,48 @@ VLIB_CLI_COMMAND (nat44_show_static_mappings_command, static) = {
* @cliexend
?*/
VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = {
- .path = "nat44 add interface address",
- .short_help = "nat44 add interface address <interface> [twice-nat] [del]",
- .function = snat_add_interface_address_command_fn,
+ .path = "nat44 add interface address",
+ .function = snat_add_interface_address_command_fn,
+ .short_help = "nat44 add interface address <interface> [twice-nat] [del]",
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{nat44 vrf table}
+ * Add empty inter VRF routing table
+ * vpp# nat44 vrf table add 10
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (nat44_ed_add_del_vrf_table_command, static) = {
+ .path = "nat44 vrf table",
+ .short_help = "nat44 vrf table [add|del] <vrf-id>",
+ .function = nat44_ed_add_del_vrf_table_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{nat44 vrf route}
+ * Add inter VRF route record to VRF routing table
+ * vpp# nat44 vrf route add table 10 20
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (nat44_ed_add_del_vrf_route_command, static) = {
+ .path = "nat44 vrf route",
+ .short_help = "nat44 vrf route [add|del] table <vrf-id> <vrf-id>",
+ .function = nat44_ed_add_del_vrf_route_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{show nat44 vrf tables}
+ * Show inter VRF route tables
+ * vpp# show nat44 vrf tables
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (nat44_ed_show_vrf_tables_command, static) = {
+ .path = "show nat44 vrf tables",
+ .short_help = "show nat44 vrf tables",
+ .function = nat44_ed_show_vrf_tables_command_fn,
};
/*?
@@ -2049,7 +2285,9 @@ VLIB_CLI_COMMAND (nat44_show_interface_address_command, static) = {
?*/
VLIB_CLI_COMMAND (nat44_show_sessions_command, static) = {
.path = "show nat44 sessions",
- .short_help = "show nat44 sessions",
+ .short_help = "show nat44 sessions [filter {i2o | o2i} {saddr <ip4-addr> "
+ "| sport <n> | daddr <ip4-addr> | dport <n> | proto <proto>} "
+ "[filter .. [..]]]",
.function = nat44_show_sessions_command_fn,
};
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_doc.rst b/src/plugins/nat/nat44-ed/nat44_ed_doc.rst
new file mode 100644
index 00000000000..a6c461d4260
--- /dev/null
+++ b/src/plugins/nat/nat44-ed/nat44_ed_doc.rst
@@ -0,0 +1,729 @@
+.. _NAT44_Endpoint_Dependent:
+
+.. toctree::
+
+NAT44-ED: NAT44 Endpoint Dependent
+==================================
+
+Introduction
+------------
+
+NAT44-ED is the IPv4 endpoint dependent network address translation
+plugin. The component implements an address and port-dependent mapping
+and address and port-dependent filtering NAT as described in
+`RFC4787 <https://tools.ietf.org/html/rfc4787>`__.
+
+The outside address and port (X1’:x1’) is reused for internal hosts
+(X:x) for different values of Y:y. A flow is matched by {source address,
+destination address, protocol, transport source port, transport
+destination port, fib index}. As long as all these are unique the
+mapping is valid. While a single outside address in theory allows for
+2^16 source ports \* 2^32 destination IP addresses \* 2^16 destination
+ports = 2^64 sessions, this number is much smaller in practice. Few
+destination ports are generally used (80, 443) and a fraction of the IP
+address space is available. The limitation is 2^16 bindings per outside
+IP address to a single destination address and port (Y:y).
+
+The implementation is split, a control-plane / slow-path and a
+data-plane / fast-path. Essentially acting as a flow router. The
+data-plane does a 6-tuple flow lookup (SA, DA, P, SP, DP, FIB) and on a
+match runs the per-flow packet handling instructions on the packet. On a
+flow lookup miss, the packet is punted to the slow-path, where depending
+on policy new sessions are created.
+
+The support set of packet handling instructions is ever-increasing.
+Currently, the implementation supports rewrite of SA, DA, SP, DP and TCP
+MSS. The fast-path also does connection tracking and expiry of older
+sessions.
+
+NAT44-ED uses 6
+tuple\ ``(src address, src port, dst address, dst port, protocol and fib)``\ for
+matching communication.
+
+Structure
+~~~~~~~~~
+
+1) Dynamic NAT
+
+- also called PAT (Port Address Translation)
+- supports port overloading
+
+2) Static NAT
+
+- types of Static NAT:
+
+ a) identity mapping
+
+ - exceptions to translations
+
+ b) static mapping
+
+ - supported features:
+
+ 1. address only mapping
+
+ - one to one translation without ports
+
+ 2. twice-nat
+
+ - double-nat, translation of source and destination
+
+ 3. self-twice-nat
+
+ - double nat, translation of source and destination, where
+ external host address is the same as local host address
+
+ 4. out2in-only mapping
+
+ - session is created only from outside interface (out2in feature)
+
+ c) load balanced static mapping
+
+ - translates one frontend (``addr``:``port``) to multiple backends
+ (``addr``:``port``)
+
+3) Interfaces
+
+a) inside interface (in2out feature) - local to external network
+ translation - feature is before ip4-lookup
+b) outside interface (out2in feature) - external to local network
+ translation - feature is before ip4-lookup
+c) inside & outside interface (classify feature) - local or external
+ network translation - correct type of translation is determined per
+ communication - feature is before ip4-lookup
+d) output interface (output feature) - used for post routing translation
+ - feature is after ip4-lookup
+
+4) Addresses
+
+a) interface address - automatically managed external address - first
+ address of VPP interface
+b) pool address - range of external addresses
+
+5) Logging and Accounting
+
+a) ipfix logging
+b) syslog
+
+6) Miscellaneous Features
+
+a) inter-vrf translation control 1. basic
+
+ - nat44 plugin enable inside-vrf / outside-vrf
+ - inside/outside interface vrf’s
+
+ 2. advanced
+
+ - vrf table routing feature
+
+b) udp/tcp/icmp timeouts - configurable timeouts for these protocols
+c) session limiting 1. basic (plugin enable [sessions ] 2. advanced
+ (per vrf table / global limiting)
+d) mss-clamping - MSS (maximum segment size) is by default determined by
+ egress interface MTU (maximum transmission unit) size - used to lower
+ MSS value in VPN tunnel scenarios where additional headers can
+ enlarge the packet beyond MTU causing drops
+e) hairpinning - hosts on the same lan segment communicating via
+ external address
+f) forwarding - if enabled translation only occurs if active session or
+ static configuration exist, rest of the traffic is passed without
+ being translated
+
+Session Table
+-------------
+
+Session table exists per thread and contains pool of sessions that can
+be either expired or not expired. NAT44-ED plugin doesn’t use scavenging
+for clearing expired sessions. Rather then using scavenging plugin uses
+LRU doubly-linked list. LRU contains ordered list of sessions indices.
+Head of the list contains last updated session. Each session holds
+record of the LRU head (tcp transitory, tcp established, udp, icmp or
+unknown lru head). Because of this plugin can reach maximum number of
+sessions without requirement to clear old sessions. During session
+creation if a maximum number of sessions was reached LRU head is
+checked. Expired head record gets deleted and a new session gets
+created. For better performance LRU head records exist. Each time a new
+packet is received session index gets moved to the tail of LRU list.
+
+Terminology
+-----------
+
+IN2OUT (inside to outside translation) OUT2IN (outside to inside
+translation)
+
+NAT (network address translation) PAT (port address translation) MSS
+(maximum segment size) MTU (maximum transmission unit) VRF (virtual
+routing and forwarding)
+
+HAIRPINNING
+
+Dynamic NAT (Minimal Required Configuration)
+--------------------------------------------
+
+::
+
+ +-------------+
+ | 10.0.0.0/24 |
+ +-------------+
+ |
+ +----------------------+
+ | GigabitEthernet0/8/0 |
+ +----------------------+
+ +----------------------+
+ | GigabitEthernet0/a/0 |
+ +----------------------+
+ |
+ +-------------+
+ | 10.0.1.0/24 |
+ +-------------+
+
+1) enable nat plugin
+
+..
+
+ nat44 plugin enable sessions 10000
+
+2) configure NAT interfaces, two options:
+
+a) add inside NAT interface on local VPP interface, add outside NAT
+ interface on external VPP interface
+
+..
+
+ set interface nat44 in GigabitEthernet0/8/0 out GigabitEthernet0/a/0
+
+b) add output NAT interface on external VPP interface
+
+..
+
+ set interface nat44 in GigabitEthernet0/a/0 output-feature
+
+3) configure NAT address
+
+a) add external address range
+
+..
+
+ nat44 add address 10.0.1.1
+
+b) add external VPP interface address
+
+..
+
+ nat44 add interface address GigabitEthernet0/a/0
+
+Static NAT
+----------
+
+Identity Mapping
+~~~~~~~~~~~~~~~~
+
+ nat44 add identity mapping ``ip4-addr``\ \|external ``interface``
+ [``protocol`` ``port``] [vrf ``table-id``] [del]
+
+Static Mapping
+~~~~~~~~~~~~~~
+
+ nat44 add static mapping tcp|udp|icmp local ``addr``
+ [``port|icmp-echo-id``] external ``addr`` [``port|icmp-echo-id``]
+ [vrf ``table-id``] [twice-nat|self-twice-nat] [out2in-only] [exact
+ ``pool-addr``] [del]
+
+Load Balanced Static Mapping
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+ nat44 add load-balancing back-end protocol tcp|udp external
+ ``addr``:``port`` local ``addr``:``port`` [vrf ``table-id``]
+ probability ``n`` [del]
+
+..
+
+ nat44 add load-balancing static mapping protocol tcp|udp external
+ ``addr``:``port`` local ``addr``:``port`` [vrf ``table-id``]
+ probability ``n`` [twice-nat|self-twice-nat] [out2in-only] [affinity
+ ``timeout-seconds``] [del]
+
+Interfaces
+----------
+
+Inside Interface
+~~~~~~~~~~~~~~~~
+
+::
+
+ NAT INSIDE IF
+ +----------------------+
+ | GigabitEthernet0/8/0 |
+ +----------------------+
+
+..
+
+ set interface nat44 in GigabitEthernet0/8/0 [del]
+
+NAT inside interface is used for translating local to external
+communication. Translates Dynamic and Static NAT traffic. If no matching
+session is found a new session is created for both Dynamic NAT and
+Static NAT. Dynamic NAT sessions can get created only on inside
+interface.
+
+Outside Interface
+~~~~~~~~~~~~~~~~~
+
+::
+
+ NAT OUTSIDE IF
+ +----------------------+
+ | GigabitEthernet0/a/0 |
+ +----------------------+
+
+..
+
+ set interface nat44 out GigabitEthernet0/a/0 [del]
+
+NAT outside interface is used for translating external to local
+communication. Translates Dynamic and Static NAT traffic. New session
+gets created only if no matching session is found and matching Static
+NAT configuration exists.
+
+Inside & Outside Interface
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+::
+
+ NAT IN AND OUT IF
+ +----------------------+
+ | GigabitEthernet0/8/0 |
+ +----------------------+
+ NAT IN AND OUT IF
+ +----------------------+
+ | GigabitEthernet0/a/0 |
+ +----------------------+
+
+..
+
+ set interface nat44 in GigabitEthernet0/8/0 out GigabitEthernet0/8/0
+ [del]
+
+ set interface nat44 in GigabitEthernet0/a/0 out GigabitEthernet0/a/0
+ [del]
+
+If one VPP interface is configured both as inside and outside NAT
+interface then classification feature is used. By default NAT inside
+interface uses in2out feature and NAT outside uses out2in feature.
+Classification feature determines if the communication should be passed
+to in2out feature or to out2in feature. Traffic will get passed to
+out2in feature if destination address is one of NAT addresses or a
+static mapping in out2in direction flow matches this communication. By
+default all traffic is passed to in2out feature.
+
+Output Interface
+~~~~~~~~~~~~~~~~
+
+::
+
+ +-------------+ +-------------+
+ | 10.0.2.0/24 | | 10.0.3.0/24 |
+ +-------------+ +-------------+
+ | |
+ +----------------------+ +----------------------+
+ | GigabitEthernet0/7/0 | | GigabitEthernet0/8/0 |
+ +----------------------+ +----------------------+
+ NAT OUTPUT IF
+ +----------------------+
+ | GigabitEthernet0/a/0 |
+ +----------------------+
+ +----------+
+ | 10.0.1.1 |
+ +----------+
+ |
+ +-------------+
+ | 10.0.1.0/24 |
+ +-------------+
+
+..
+
+ set interface nat44 in GigabitEthernet0/a/0 output-feature [del]
+
+NAT output interface acts as both inside and outside interfaces. Inside
+rules apply for all egress communication on VPP interface and outside
+rules apply for all ingress communication. Compared to inside/outside
+NAT configuration method non of the local interfaces require to be
+configured as inside NAT interfaces. Translation only occurs after
+routing decision has been made and just before leaving NAT output
+interface. In above example all traffic destined for 10.0.1.0/24 from
+10.0.2.0/24 or 10.0.3.0/24 will get translated. NAT output interface
+acts as post-routing feature.
+
+Addresses
+---------
+
+Interface Address
+~~~~~~~~~~~~~~~~~
+
+ nat44 add interface address ``interface`` `twice-nat <#twice-nat>`__
+ [del]
+
+NAT interface address is a standard external pool address that gets auto
+added upon resolving first VPP interface address. Supports both standard
+address and twice-nat address. Twice-nat address is used in conjunction
+with static mapping twice-nat and self-twice-nat feature.
+
+Pool Address
+~~~~~~~~~~~~
+
+ nat44 add address ``ip4-range-start`` [- ``ip4-range-end``]
+ [tenant-vrf ``vrf-id``] `twice-nat <#twice-nat>`__ [del]
+
+Statically configured address or range of addresses that supports both
+standard and twice-nat address. Specifying vrf-id lets user assign
+address/addresses to specific NAT inside interfaces that belong to the
+same vrf table.
+
+Logging
+-------
+
+ nat set logging level ``level``
+
+Configuration of logging level is used only for internal VPP logging.
+
+ nat ipfix logging [domain ``domain-id``] [src-port ``port``]
+ [disable]
+
+Both syslog and ipfix support connection tracking capabilities. Session
+creation, session deletion, maximum sessions exceeded among other things
+are logged by syslog and ipfix.
+
+Miscellaneous
+-------------
+
+VRFs
+~~~~
+
+::
+
+ VRF 0 VRF 1
+ +-------------+ +-------------+
+ | 10.0.2.0/24 | | 10.0.3.0/24 |
+ +-------------+ +-------------+
+ | |
+ NAT INSIDE IF NAT INSIDE IF
+ +----------------------+ +----------------------+
+ | GigabitEthernet0/7/0 | | GigabitEthernet0/8/0 |
+ +----------------------+ +----------------------+
+ NAT OUTSIDE IF NAT OUTSIDE IF
+ +----------------------+ +----------------------+
+ | GigabitEthernet0/a/0 | | GigabitEthernet0/b/0 |
+ +----------------------+ +----------------------+
+ VRF 2 VRF 3
+ | |
+ +--------------------------+
+ |
+ +------------+------------+------------+
+ | | | |
+ +----------+ +----------+ +----------+ +----------+
+ | 10.0.0.1 | | 10.0.0.2 | | 10.0.1.1 | | 10.0.1.2 |
+ +----------+ +----------+ +----------+ +----------+
+ VRF 0 POOL VRF 1 POOL VRF 0 POOL VRF 1 POOL
+
+..
+
+ nat44 add address ``ip4-addr`` [tenant-vrf ``vrf-id``] [del]
+
+ nat44 plugin enable inside-vrf ``vrf-id`` outside-vrf ``vrf-id``
+ [disable]",
+
+Default behavior
+^^^^^^^^^^^^^^^^
+
+By design NAT supports passing communication between VRFs. Passing
+communication between multiple different VRFs is also supported (GE0/7/0
+-> GE0/b/0, GE0/8/0 -> GE0/a/0).
+
+NAT pool address tenant-vrf configuration parameter is used to constrain
+pool address to specific inside VRF. Example communication (in the above
+diagram): 1) from GE0/7/0 -> GE0/b/0 would choose 10.0.1.1 pool address
+2) from GE0/8/0 -> GE0/b/0 would choose 10.0.1.2 pool address
+
+Plugin enable parameters inside-vrf and outside-vrf are used as follows:
+
+Both ``inside-vrf`` and ``outside-vrf`` configuration parameters are
+used in conjunction with Static NAT, inside-vrf is only used for Static
+NAT.
+
+inside VRF: - used only in conjunction with static mappings - default
+inside VRF parameter is used in in2out feature to lookup static mapping
+if mapping can’t be found by inside interface VRF - used as default when
+adding static mappings as in2out vrf
+
+outside VRF: - used in conjunction with static mappings - secondary
+option for looking up static mappings in in2out feature based on outside
+VRF - used as default destination vrf in in2out feature during session
+creation if non of outside interfaces can resolve destination IP address
+
+Session creation default behavior (in2out only): - ingress interface fib
+is used as inside fib - Outside fib is chosen based on ability to
+resolve destination address in one of the outside interface networks. if
+there is no such network that is able to resolve destination a default
+outside fib (outside vrf index) is used.
+
+Default behavior enables use of multiple outside and inside fibs with
+some limitations. The limitation in the default behavior is that if each
+interface belonging to different fib contains default gateway every time
+first interface network fib gets used as outside fib index during
+session creation.
+
+VRF tables
+^^^^^^^^^^
+
+ nat44 vrf table [add|del] ``vrf-id``
+
+..
+
+ nat44 vrf route [add|del] table ``vrf-id`` ``vrf-id``
+
+VRF tables change the default behavior of working with inter-vrf
+communication. Adding empty VRF table disables passing communication
+between VRFs. Adding additional routes to the table makes destination
+VRF decision making algorithm do lookups into these tables. During
+session creation destination VRF in in2out feature is resolved by
+traversing VRF routes in the matching VRF table. If VRF route resolves
+destination IPv4 address then this VRF gets used. If non VRF route can
+resolve destination IPv4 address If VRF route can’t be found source VRF
+will be used. Priority of VRF routes is based on order of configuration.
+
+Timeouts
+~~~~~~~~
+
+ set nat timeout [udp ``sec`` \| tcp-established ``sec``
+ tcp-transitory ``sec`` \| icmp ``sec`` \| reset]
+
+Session Limiting
+~~~~~~~~~~~~~~~~
+
+ nat44 plugin enable sessions ``max-number``
+
+Maximum number of sessions value is used on per-thread (per-worker)
+basis.
+
+ set nat44 session limit ``limit`` [vrf ``table-id``]
+
+Per-vrf session limiting makes it possible to split maximum number of
+sessions between different VRFs.
+
+MSS Clamping
+~~~~~~~~~~~~
+
+ nat mss-clamping ``mss-value``\ \|disable
+
+Forwarding
+~~~~~~~~~~
+
+ nat44 forwarding enable|disable
+
+Additional Configuration Commands
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+ | set nat frame-queue-nelts ``number``
+ | set nat workers ``workers-list``
+ | nat44 del session in|out ``addr``:``port`` tcp|udp|icmp [vrf
+ ``id``] [external-host ``addr``:``port``]
+
+Show commands
+^^^^^^^^^^^^^
+
+::
+
+ show nat workers
+ show nat timeouts
+ show nat44 summary
+ show nat44 sessions
+ show nat44 addresses
+ show nat mss-clamping
+ show nat44 interfaces
+ show nat44 vrf tables
+ show nat44 hash tables
+ nat44 show static mappings
+ show nat44 interface address
+
+Configuration Examples
+----------------------
+
+TWICE-NAT
+~~~~~~~~~
+
+Twice NAT lets you translate both the source and destination address in
+a single rule. Currently, twice NAT44 is supported only for local
+network service session initiated from outside network. Twice NAT static
+mappings can only get initiated (create sessions) from outside network.
+
+Topology
+^^^^^^^^
+
+::
+
+ +--------------------------+
+ | 10.0.0.2/24 (local host) |
+ +--------------------------+
+ |
+ +---------------------------------+
+ | 10.0.0.1/24 (eth0) (nat inside) |
+ | 20.0.0.1/24 (eth1) (nat outside)|
+ +---------------------------------+
+ |
+ +---------------------------+
+ | 20.0.0.2/24 (remote host) |
+ +---------------------------+
+
+In this example traffic will be initiated from remote host. Remote host
+will be accessing local host via twice-nat mapping.
+
+Translation will occur as follows:
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+outside to inside translation:
+
+
+ | src address: 20.0.0.2 -> 192.168.160.101
+ | dst address: 20.0.0.1 -> 10.0.0.2
+
+inside to outside translation:
+
+
+ | src address: 10.0.0.2 -> 20.0.0.1
+ | dst address: 192.168.160.101 -> 20.0.0.2
+
+Configuration
+^^^^^^^^^^^^^
+
+Enable nat44-ed plugin:
+
+
+::
+
+ nat44 plugin enable sessions 1000
+
+Configure inside interface:
+
+
+::
+
+ set int state eth0 up
+ set int ip address eth0 10.0.0.1/24
+ set int nat44 in eth0
+
+Configure outside interface:
+
+
+::
+
+ set int state eth1 up
+ set int ip address eth1 20.0.0.1/24
+ set int nat44 out eth1
+
+Configure nat address pools:
+
+
+::
+
+ nat44 add address 20.0.0.1
+ nat44 add address 192.168.160.101 twice-nat
+
+- alternatively we could use ``nat44 add interface address eth1``
+- both pools are required
+- pool ``20.0.0.1`` is used for out2in incoming traffic
+- special twice-nat pool ``192.168.160.101`` is used for secondary
+ translation
+
+Finally, add twice-nat mapping:
+
+
+ nat44 add static mapping tcp local 10.0.0.2 5201 external 20.0.0.1
+ 5201 twice-nat
+
+SELF TWICE-NAT
+~~~~~~~~~~~~~~
+
+Self twice NAT works similar to twice NAT with few exceptions. Self
+twice NAT is a feature that lets client and service running on the same
+host to communicate via NAT device. This means that external address is
+the same address as local address. Self twice NAT static mappings can
+only get initiated (create sessions) from outside network.
+
+.. _topology-self-twice-nat:
+
+Topology
+^^^^^^^^
+
+::
+
+ +--------------------------+
+ | 10.0.0.2/24 (local host) |
+ +--------------------------+
+ |
+ +-------------------------------------------+
+ | 10.0.0.1/24 (eth0) (nat inside & outside) |
+ +-------------------------------------------+
+
+In this example traffic will be initiated from local host. Local host
+will be accessing itself via self-twice-nat mapping.
+
+.. _translation-will-occur-as-follows-1:
+
+Translation will occur as follows:
+''''''''''''''''''''''''''''''''''
+
+.. _outside-to-inside-translation-1:
+
+outside to inside translation:
+
+
+ | src address: 10.0.0.2 -> 192.168.160.101
+ | dst address: 10.0.0.1 -> 10.0.0.2
+
+.. _inside-to-outside-translation-1:
+
+inside to outside translation:
+
+
+ | src address: 10.0.0.2 -> 10.0.0.1
+ | dst address: 192.168.160.101 -> 10.0.0.2
+
+.. _configuration-1:
+
+Configuration
+^^^^^^^^^^^^^
+
+.. _enable-nat44-ed-plugin-1:
+
+Enable nat44-ed plugin:
+
+
+::
+
+ nat44 plugin enable sessions 1000
+
+Configure NAT interface:
+
+
+::
+
+ set int state eth0 up
+ set int ip address eth0 10.0.0.1/24
+ set int nat44 in eth0
+ set int nat44 out eth0
+
+.. _configure-nat-address-pools-1:
+
+Configure nat address pools:
+
+
+::
+
+ nat44 add address 10.0.0.1
+ nat44 add address 192.168.160.101 twice-nat
+
+Finally, add self-twice-nat mapping:
+
+
+ nat44 add static mapping tcp local 10.0.0.2 5201 external 10.0.0.1
+ 5201 self-twice-nat
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_format.c b/src/plugins/nat/nat44-ed/nat44_ed_format.c
index 597bc2b4d0b..ee3e925e529 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_format.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_format.c
@@ -12,111 +12,42 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT formatting
- */
#include <nat/nat44-ed/nat44_ed.h>
#include <nat/nat44-ed/nat44_ed_inlines.h>
-uword
-unformat_nat_protocol (unformat_input_t * input, va_list * args)
-{
- u32 *r = va_arg (*args, u32 *);
-
- if (0);
-#define _(N, i, n, s) else if (unformat (input, s)) *r = NAT_PROTOCOL_##N;
- foreach_nat_protocol
-#undef _
- else
- return 0;
- return 1;
-}
-
-u8 *
-format_nat_protocol (u8 * s, va_list * args)
-{
- u32 i = va_arg (*args, u32);
- u8 *t = 0;
-
- switch (i)
- {
-#define _(N, j, n, str) case NAT_PROTOCOL_##N: t = (u8 *) str; break;
- foreach_nat_protocol
-#undef _
- default:
- s = format (s, "unknown");
- return s;
- }
- s = format (s, "%s", t);
- return s;
-}
-
-u8 *
-format_nat_addr_and_port_alloc_alg (u8 * s, va_list * args)
-{
- u32 i = va_arg (*args, u32);
- u8 *t = 0;
-
- switch (i)
- {
-#define _(v, N, s) case NAT_ADDR_AND_PORT_ALLOC_ALG_##N: t = (u8 *) s; break;
- foreach_nat_addr_and_port_alloc_alg
-#undef _
- default:
- s = format (s, "unknown");
- return s;
- }
- s = format (s, "%s", t);
- return s;
-}
-
u8 *
-format_snat_key (u8 * s, va_list * args)
+format_ed_session_kvp (u8 *s, va_list *args)
{
- u64 key = va_arg (*args, u64);
+ clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
- ip4_address_t addr;
- u16 port;
- nat_protocol_t protocol;
+ u8 proto;
+ u16 r_port, l_port;
+ ip4_address_t l_addr, r_addr;
u32 fib_index;
- split_nat_key (key, &addr, &port, &fib_index, &protocol);
+ split_ed_kv (v, &l_addr, &r_addr, &proto, &fib_index, &l_port, &r_port);
+ s = format (s,
+ "local %U:%d remote %U:%d proto %U fib %d thread-index %u "
+ "session-index %u",
+ format_ip4_address, &l_addr, clib_net_to_host_u16 (l_port),
+ format_ip4_address, &r_addr, clib_net_to_host_u16 (r_port),
+ format_ip_protocol, proto, fib_index,
+ ed_value_get_thread_index (v), ed_value_get_session_index (v));
- s = format (s, "%U proto %U port %d fib %d",
- format_ip4_address, &addr,
- format_nat_protocol, protocol,
- clib_net_to_host_u16 (port), fib_index);
- return s;
-}
-
-u8 *
-format_snat_session_state (u8 * s, va_list * args)
-{
- u32 i = va_arg (*args, u32);
- u8 *t = 0;
-
- switch (i)
- {
-#define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break;
- foreach_snat_session_state
-#undef _
- default:
- t = format (t, "unknown");
- }
- s = format (s, "%s", t);
return s;
}
u8 *
format_snat_session (u8 * s, va_list * args)
{
+ snat_main_t *sm = va_arg (*args, snat_main_t *);
snat_main_per_thread_data_t *tsm =
va_arg (*args, snat_main_per_thread_data_t *);
snat_session_t *sess = va_arg (*args, snat_session_t *);
+ f64 now = va_arg (*args, f64);
- if (snat_is_unk_proto_session (sess))
+ if (nat44_ed_is_unk_proto (sess->proto))
{
s = format (s, " i2o %U proto %u fib %u\n",
format_ip4_address, &sess->in2out.addr,
@@ -127,26 +58,23 @@ format_snat_session (u8 * s, va_list * args)
}
else
{
- s = format (s, " i2o %U proto %U port %d fib %d\n",
- format_ip4_address, &sess->in2out.addr,
- format_nat_protocol, sess->nat_proto,
+ s = format (s, " i2o %U proto %U port %d fib %d\n", format_ip4_address,
+ &sess->in2out.addr, format_ip_protocol, sess->proto,
clib_net_to_host_u16 (sess->in2out.port),
sess->in2out.fib_index);
s = format (s, " o2i %U proto %U port %d fib %d\n",
- format_ip4_address, &sess->out2in.addr, format_nat_protocol,
- sess->nat_proto, clib_net_to_host_u16 (sess->out2in.port),
+ format_ip4_address, &sess->out2in.addr, format_ip_protocol,
+ sess->proto, clib_net_to_host_u16 (sess->out2in.port),
sess->out2in.fib_index);
}
- if (is_ed_session (sess) || is_fwd_bypass_session (sess))
+ if (nat44_ed_is_twice_nat_session (sess))
{
- if (is_twice_nat_session (sess))
- {
- s = format (s, " external host o2i %U:%d i2o %U:%d\n",
- format_ip4_address, &sess->ext_host_addr,
- clib_net_to_host_u16 (sess->ext_host_port),
- format_ip4_address, &sess->ext_host_nat_addr,
- clib_net_to_host_u16 (sess->ext_host_nat_port));
- }
+ s = format (s, " external host o2i %U:%d i2o %U:%d\n",
+ format_ip4_address, &sess->ext_host_addr,
+ clib_net_to_host_u16 (sess->ext_host_port),
+ format_ip4_address, &sess->ext_host_nat_addr,
+ clib_net_to_host_u16 (sess->ext_host_nat_port));
+ }
else
{
if (sess->ext_host_addr.as_u32)
@@ -156,20 +84,21 @@ format_snat_session (u8 * s, va_list * args)
}
s = format (s, " i2o flow: %U\n", format_nat_6t_flow, &sess->i2o);
s = format (s, " o2i flow: %U\n", format_nat_6t_flow, &sess->o2i);
- }
s = format (s, " index %llu\n", sess - tsm->sessions);
s = format (s, " last heard %.2f\n", sess->last_heard);
- s = format (s, " total pkts %d, total bytes %lld\n",
- sess->total_pkts, sess->total_bytes);
- if (snat_is_session_static (sess))
+ s = format (s, " timeout in %.2f\n",
+ nat44_session_get_timeout (sm, sess) - (now - sess->last_heard));
+ s = format (s, " total pkts %d, total bytes %lld\n", sess->total_pkts,
+ sess->total_bytes);
+ if (nat44_ed_is_session_static (sess))
s = format (s, " static translation\n");
else
s = format (s, " dynamic translation\n");
- if (is_fwd_bypass_session (sess))
+ if (na44_ed_is_fwd_bypass_session (sess))
s = format (s, " forwarding-bypass\n");
- if (is_lb_session (sess))
+ if (nat44_ed_is_lb_session (sess))
s = format (s, " load-balancing\n");
- if (is_twice_nat_session (sess))
+ if (nat44_ed_is_twice_nat_session (sess))
s = format (s, " twice-nat\n");
return s;
}
@@ -186,9 +115,8 @@ format_snat_static_mapping (u8 * s, va_list * args)
s = format (s, "identity mapping %U",
format_ip4_address, &m->local_addr);
else
- s = format (s, "identity mapping %U %U:%d",
- format_nat_protocol, m->proto,
- format_ip4_address, &m->local_addr,
+ s = format (s, "identity mapping %U %U:%d", format_ip_protocol,
+ m->proto, format_ip4_address, &m->local_addr,
clib_net_to_host_u16 (m->local_port));
pool_foreach (local, m->locals)
@@ -212,8 +140,8 @@ format_snat_static_mapping (u8 * s, va_list * args)
if (is_sm_lb (m->flags))
{
s =
- format (s, "%U external %U:%d %s %s", format_nat_protocol,
- m->proto, format_ip4_address, &m->external_addr,
+ format (s, "%U external %U:%d %s %s", format_ip_protocol, m->proto,
+ format_ip4_address, &m->external_addr,
clib_net_to_host_u16 (m->external_port),
is_sm_twice_nat (m->flags) ?
"twice-nat" :
@@ -230,7 +158,7 @@ format_snat_static_mapping (u8 * s, va_list * args)
}
else
s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s",
- format_nat_protocol, m->proto, format_ip4_address,
+ format_ip_protocol, m->proto, format_ip4_address,
&m->local_addr, clib_net_to_host_u16 (m->local_port),
format_ip4_address, &m->external_addr,
clib_net_to_host_u16 (m->external_port), m->vrf_id,
@@ -245,21 +173,146 @@ format_snat_static_mapping (u8 * s, va_list * args)
u8 *
format_snat_static_map_to_resolve (u8 * s, va_list * args)
{
- snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *);
+ snat_static_mapping_resolve_t *m =
+ va_arg (*args, snat_static_mapping_resolve_t *);
vnet_main_t *vnm = vnet_get_main ();
- if (m->addr_only)
+ if (is_sm_addr_only (m->flags))
s = format (s, "local %U external %U vrf %d",
format_ip4_address, &m->l_addr,
format_vnet_sw_if_index_name, vnm, m->sw_if_index, m->vrf_id);
else
- s = format (s, "%U local %U:%d external %U:%d vrf %d",
- format_nat_protocol, m->proto,
- format_ip4_address, &m->l_addr,
- clib_net_to_host_u16 (m->l_port),
- format_vnet_sw_if_index_name, vnm, m->sw_if_index,
- clib_net_to_host_u16 (m->e_port), m->vrf_id);
+ s = format (s, "%U local %U:%d external %U:%d vrf %d", format_ip_protocol,
+ m->proto, format_ip4_address, &m->l_addr,
+ clib_net_to_host_u16 (m->l_port), format_vnet_sw_if_index_name,
+ vnm, m->sw_if_index, clib_net_to_host_u16 (m->e_port),
+ m->vrf_id);
+
+ return s;
+}
+
+u8 *
+format_nat_ed_translation_error (u8 *s, va_list *args)
+{
+ nat_translation_error_e e = va_arg (*args, nat_translation_error_e);
+
+ switch (e)
+ {
+ case NAT_ED_TRNSL_ERR_SUCCESS:
+ s = format (s, "success");
+ break;
+ case NAT_ED_TRNSL_ERR_TRANSLATION_FAILED:
+ s = format (s, "translation-failed");
+ break;
+ case NAT_ED_TRNSL_ERR_FLOW_MISMATCH:
+ s = format (s, "flow-mismatch");
+ break;
+ case NAT_ED_TRNSL_ERR_PACKET_TRUNCATED:
+ s = format (s, "packet-truncated");
+ break;
+ case NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT:
+ s = format (s, "inner-ip-corrupted");
+ break;
+ case NAT_ED_TRNSL_ERR_INVALID_CSUM:
+ s = format (s, "invalid-checksum");
+ break;
+ }
+ return s;
+}
+
+u8 *
+format_nat_6t_flow (u8 *s, va_list *args)
+{
+ nat_6t_flow_t *f = va_arg (*args, nat_6t_flow_t *);
+
+ s = format (s, "match: %U ", format_nat_6t, &f->match);
+ int r = 0;
+ if (f->ops & NAT_FLOW_OP_SADDR_REWRITE)
+ {
+ s = format (s, "rewrite: saddr %U ", format_ip4_address,
+ f->rewrite.saddr.as_u8);
+ r = 1;
+ }
+ if (f->ops & NAT_FLOW_OP_SPORT_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "sport %u ", clib_net_to_host_u16 (f->rewrite.sport));
+ }
+ if (f->ops & NAT_FLOW_OP_DADDR_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "daddr %U ", format_ip4_address, f->rewrite.daddr.as_u8);
+ }
+ if (f->ops & NAT_FLOW_OP_DPORT_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "dport %u ", clib_net_to_host_u16 (f->rewrite.dport));
+ }
+ if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "icmp-id %u ", clib_net_to_host_u16 (f->rewrite.icmp_id));
+ }
+ if (f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "txfib %u ", f->rewrite.fib_index);
+ }
+ return s;
+}
+
+u8 *
+format_nat_6t (u8 *s, va_list *args)
+{
+ nat_6t_t *t = va_arg (*args, nat_6t_t *);
+ s = format (s, "saddr %U sport %u daddr %U dport %u proto %U fib_idx %u",
+ format_ip4_address, t->saddr.as_u8,
+ clib_net_to_host_u16 (t->sport), format_ip4_address,
+ t->daddr.as_u8, clib_net_to_host_u16 (t->dport),
+ format_ip_protocol, t->proto, t->fib_index);
+ return s;
+}
+
+u8 *
+format_nat44_ed_tcp_state (u8 *s, va_list *args)
+{
+ nat44_ed_tcp_state_e e = va_arg (*args, nat44_ed_tcp_state_e);
+ switch (e)
+ {
+ case NAT44_ED_TCP_STATE_CLOSED:
+ s = format (s, "closed");
+ break;
+ case NAT44_ED_TCP_STATE_ESTABLISHED:
+ s = format (s, "established");
+ break;
+ case NAT44_ED_TCP_STATE_CLOSING:
+ s = format (s, "closing");
+ break;
+ case NAT44_ED_TCP_N_STATE:
+ s = format (s, "BUG! unexpected N_STATE! BUG!");
+ break;
+ }
return s;
}
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_handoff.c b/src/plugins/nat/nat44-ed/nat44_ed_handoff.c
index c5ceff4e454..5cb4effb6c4 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_handoff.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_handoff.c
@@ -19,7 +19,6 @@
#include <vlib/vlib.h>
#include <vnet/vnet.h>
-#include <vnet/handoff.h>
#include <vnet/fib/ip4_fib.h>
#include <vppinfra/error.h>
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_in2out.c b/src/plugins/nat/nat44-ed/nat44_ed_in2out.c
index 0065d7703b1..9b4dac3b356 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_in2out.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_in2out.c
@@ -25,18 +25,12 @@
#include <vnet/udp/udp_local.h>
#include <vppinfra/error.h>
-#include <nat/lib/nat_syslog.h>
#include <nat/lib/nat_inlines.h>
#include <nat/lib/ipfix_logging.h>
#include <nat/nat44-ed/nat44_ed.h>
#include <nat/nat44-ed/nat44_ed_inlines.h>
-/* number of attempts to get a port for ED overloading algorithm, if rolling
- * a dice this many times doesn't produce a free port, it's treated
- * as if there were no free ports available to conserve resources */
-#define ED_PORT_ALLOC_ATTEMPTS (10)
-
static char *nat_in2out_ed_error_strings[] = {
#define _(sym,string) string,
foreach_nat_in2out_ed_error
@@ -55,6 +49,7 @@ typedef struct
u8 is_slow_path;
u8 translation_via_i2of;
u8 lookup_skipped;
+ u8 tcp_state;
} nat_in2out_ed_trace_t;
static u8 *
@@ -84,7 +79,7 @@ format_nat_in2out_ed_trace (u8 * s, va_list * args)
{
if (t->lookup_skipped)
{
- s = format (s, "\n lookup skipped - cached session index used");
+ s = format (s, "\n lookup skipped - cached session index used");
}
else
{
@@ -92,93 +87,33 @@ format_nat_in2out_ed_trace (u8 * s, va_list * args)
&t->search_key);
}
}
-
- return s;
-}
-
-/**
- * @brief Check if packet should be translated
- *
- * Packets aimed at outside interface and external address with active session
- * should be translated.
- *
- * @param sm NAT main
- * @param rt NAT runtime data
- * @param sw_if_index0 index of the inside interface
- * @param ip0 IPv4 header
- * @param proto0 NAT protocol
- * @param rx_fib_index0 RX FIB index
- *
- * @returns 0 if packet should be translated otherwise 1
- */
-static inline int
-snat_not_translate_fast (snat_main_t *sm, vlib_node_runtime_t *node,
- u32 sw_if_index0, ip4_header_t *ip0, u32 proto0,
- u32 rx_fib_index0)
-{
- fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
- nat_outside_fib_t *outside_fib;
- fib_prefix_t pfx = {
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_len = 32,
- .fp_addr = {
- .ip4.as_u32 = ip0->dst_address.as_u32,
- }
- ,
- };
-
- /* Don't NAT packet aimed at the intfc address */
- if (PREDICT_FALSE (
- is_interface_addr (sm, node, sw_if_index0, ip0->dst_address.as_u32)))
- return 1;
-
- fei = fib_table_lookup (rx_fib_index0, &pfx);
- if (FIB_NODE_INDEX_INVALID != fei)
+ if (IP_PROTOCOL_TCP == t->i2of.match.proto)
{
- u32 sw_if_index = fib_entry_get_resolving_interface (fei);
- if (sw_if_index == ~0)
- {
- vec_foreach (outside_fib, sm->outside_fibs)
- {
- fei = fib_table_lookup (outside_fib->fib_index, &pfx);
- if (FIB_NODE_INDEX_INVALID != fei)
- {
- sw_if_index = fib_entry_get_resolving_interface (fei);
- if (sw_if_index != ~0)
- break;
- }
- }
- }
- if (sw_if_index == ~0)
- return 1;
-
- snat_interface_t *i;
- pool_foreach (i, sm->interfaces)
- {
- /* NAT packet aimed at outside interface */
- if ((nat_interface_is_outside (i)) &&
- (sw_if_index == i->sw_if_index))
- return 0;
- }
+ s = format (s, "\n TCP state: %U", format_nat44_ed_tcp_state,
+ t->tcp_state);
}
- return 1;
+ return s;
}
static int
nat_ed_alloc_addr_and_port_with_snat_address (
- snat_main_t *sm, u32 nat_proto, u32 thread_index, snat_address_t *a,
+ snat_main_t *sm, u8 proto, u32 thread_index, snat_address_t *a,
u16 port_per_thread, u32 snat_thread_index, snat_session_t *s,
ip4_address_t *outside_addr, u16 *outside_port)
{
- const u16 port_thread_offset = (port_per_thread * snat_thread_index) + 1024;
+ const u16 port_thread_offset =
+ (port_per_thread * snat_thread_index) + ED_USER_PORT_OFFSET;
+
+ /* Backup original match in case of failure */
+ const nat_6t_t match = s->o2i.match;
s->o2i.match.daddr = a->addr;
/* first try port suggested by caller */
u16 port = clib_net_to_host_u16 (*outside_port);
u16 port_offset = port - port_thread_offset;
- if (port <= port_thread_offset ||
- port > port_thread_offset + port_per_thread)
+ if (port < port_thread_offset ||
+ port >= port_thread_offset + port_per_thread)
{
/* need to pick a different port, suggested port doesn't fit in
* this thread's port range */
@@ -188,27 +123,13 @@ nat_ed_alloc_addr_and_port_with_snat_address (
u16 attempts = ED_PORT_ALLOC_ATTEMPTS;
do
{
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
s->o2i.match.sport = clib_host_to_net_u16 (port);
}
s->o2i.match.dport = clib_host_to_net_u16 (port);
if (0 == nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 2))
{
-#define _(N, i, n, s) \
- case NAT_PROTOCOL_##N: \
- ++a->busy_##n##_port_refcounts[port]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- break;
- switch (nat_proto)
- {
- foreach_nat_protocol;
- default:
- nat_elog_info (sm, "unknown protocol");
- return 1;
- }
-#undef _
*outside_addr = a->addr;
*outside_port = clib_host_to_net_u16 (port);
return 0;
@@ -218,58 +139,141 @@ nat_ed_alloc_addr_and_port_with_snat_address (
--attempts;
}
while (attempts > 0);
+
+ /* Revert match */
+ s->o2i.match = match;
return 1;
}
static int
-nat_ed_alloc_addr_and_port (snat_main_t *sm, u32 rx_fib_index, u32 nat_proto,
+nat_ed_alloc_addr_and_port (snat_main_t *sm, u32 rx_fib_index,
+ u32 tx_sw_if_index, u32 nat_proto,
u32 thread_index, ip4_address_t s_addr,
- u16 port_per_thread, u32 snat_thread_index,
+ ip4_address_t d_addr, u32 snat_thread_index,
snat_session_t *s, ip4_address_t *outside_addr,
u16 *outside_port)
{
- int i;
- snat_address_t *a, *ga = 0;
-
if (vec_len (sm->addresses) > 0)
{
- int s_addr_offset = s_addr.as_u32 % vec_len (sm->addresses);
-
- for (i = s_addr_offset; i < vec_len (sm->addresses); ++i)
+ u32 s_addr_offset = (s_addr.as_u32 + (s_addr.as_u32 >> 8) +
+ (s_addr.as_u32 >> 16) + (s_addr.as_u32 >> 24)) %
+ vec_len (sm->addresses);
+ snat_address_t *a, *ja = 0, *ra = 0, *ba = 0;
+ int i;
+
+ // output feature
+ if (tx_sw_if_index != ~0)
{
- a = sm->addresses + i;
- if (a->fib_index == rx_fib_index)
+ for (i = s_addr_offset; i < vec_len (sm->addresses); ++i)
{
- return nat_ed_alloc_addr_and_port_with_snat_address (
- sm, nat_proto, thread_index, a, port_per_thread,
- snat_thread_index, s, outside_addr, outside_port);
+ a = sm->addresses + i;
+ if (a->fib_index == rx_fib_index)
+ {
+ if (a->sw_if_index == tx_sw_if_index)
+ {
+ if ((a->addr_len != ~0) &&
+ (a->net.as_u32 ==
+ (d_addr.as_u32 & ip4_main.fib_masks[a->addr_len])))
+
+ {
+ return nat_ed_alloc_addr_and_port_with_snat_address (
+ sm, nat_proto, thread_index, a,
+ sm->port_per_thread, snat_thread_index, s,
+ outside_addr, outside_port);
+ }
+ ra = a;
+ }
+ ja = a;
+ }
+ else if (a->fib_index == ~0)
+ {
+ ba = a;
+ }
}
- else if (a->fib_index == ~0)
+ for (i = 0; i < s_addr_offset; ++i)
{
- ga = a;
+ a = sm->addresses + i;
+ if (a->fib_index == rx_fib_index)
+ {
+ if (a->sw_if_index == tx_sw_if_index)
+ {
+ if ((a->addr_len != ~0) &&
+ (a->net.as_u32 ==
+ (d_addr.as_u32 & ip4_main.fib_masks[a->addr_len])))
+
+ {
+ return nat_ed_alloc_addr_and_port_with_snat_address (
+ sm, nat_proto, thread_index, a,
+ sm->port_per_thread, snat_thread_index, s,
+ outside_addr, outside_port);
+ }
+ ra = a;
+ }
+ ja = a;
+ }
+ else if (a->fib_index == ~0)
+ {
+ ba = a;
+ }
}
- }
-
- for (i = 0; i < s_addr_offset; ++i)
- {
- a = sm->addresses + i;
- if (a->fib_index == rx_fib_index)
+ if (ra)
{
return nat_ed_alloc_addr_and_port_with_snat_address (
- sm, nat_proto, thread_index, a, port_per_thread,
+ sm, nat_proto, thread_index, ra, sm->port_per_thread,
snat_thread_index, s, outside_addr, outside_port);
}
- else if (a->fib_index == ~0)
+ }
+ else
+ {
+ // first try nat pool addresses to sw interface addreses mappings
+ for (i = s_addr_offset; i < vec_len (sm->addresses); ++i)
{
- ga = a;
+ a = sm->addresses + i;
+ if (a->fib_index == rx_fib_index)
+ {
+ if ((a->addr_len != ~0) &&
+ (a->net.as_u32 ==
+ (d_addr.as_u32 & ip4_main.fib_masks[a->addr_len])))
+ {
+ return nat_ed_alloc_addr_and_port_with_snat_address (
+ sm, nat_proto, thread_index, a, sm->port_per_thread,
+ snat_thread_index, s, outside_addr, outside_port);
+ }
+ ja = a;
+ }
+ else if (a->fib_index == ~0)
+ {
+ ba = a;
+ }
+ }
+ for (i = 0; i < s_addr_offset; ++i)
+ {
+ a = sm->addresses + i;
+ if (a->fib_index == rx_fib_index)
+ {
+ if ((a->addr_len != ~0) &&
+ (a->net.as_u32 ==
+ (d_addr.as_u32 & ip4_main.fib_masks[a->addr_len])))
+ {
+ return nat_ed_alloc_addr_and_port_with_snat_address (
+ sm, nat_proto, thread_index, a, sm->port_per_thread,
+ snat_thread_index, s, outside_addr, outside_port);
+ }
+ ja = a;
+ }
+ else if (a->fib_index == ~0)
+ {
+ ba = a;
+ }
}
}
- if (ga)
+ if (ja || ba)
{
+ a = ja ? ja : ba;
return nat_ed_alloc_addr_and_port_with_snat_address (
- sm, nat_proto, thread_index, a, port_per_thread, snat_thread_index,
- s, outside_addr, outside_port);
+ sm, nat_proto, thread_index, a, sm->port_per_thread,
+ snat_thread_index, s, outside_addr, outside_port);
}
}
/* Totally out of translations to use... */
@@ -277,74 +281,167 @@ nat_ed_alloc_addr_and_port (snat_main_t *sm, u32 rx_fib_index, u32 nat_proto,
return 1;
}
+static_always_inline int
+nat44_ed_external_sm_lookup (snat_main_t *sm, ip4_address_t match_addr,
+ u16 match_port, ip_protocol_t match_protocol,
+ ip4_address_t *daddr, u16 *dport)
+{
+ snat_static_mapping_t *m =
+ nat44_ed_sm_o2i_lookup (sm, match_addr, match_port, 0, match_protocol);
+ if (!m)
+ {
+ /* Try address only mapping */
+ m = nat44_ed_sm_o2i_lookup (sm, match_addr, 0, 0, 0);
+ if (!m)
+ return 0;
+ }
+ *daddr = m->local_addr;
+ if (dport)
+ {
+ /* Address only mapping doesn't change port */
+ *dport = is_sm_addr_only (m->flags) ? match_port : m->local_port;
+ }
+ return 1;
+}
+
+static_always_inline vrf_table_t *
+get_vrf_table_by_fib (u32 fib_index)
+{
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t;
+
+ pool_foreach (t, sm->vrf_tables)
+ {
+ if (fib_index == t->table_fib_index)
+ {
+ return t;
+ }
+ }
+
+ return 0;
+}
+
static_always_inline u32
-nat_outside_fib_index_lookup (snat_main_t * sm, ip4_address_t addr)
+get_tx_fib_index (u32 rx_fib_index, ip4_address_t addr)
{
fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
- nat_outside_fib_t *outside_fib;
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP4,
.fp_len = 32,
.fp_addr = {.ip4.as_u32 = addr.as_u32,}
,
};
- // TODO: multiple vrfs none can resolve addr
- vec_foreach (outside_fib, sm->outside_fibs)
+
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t = get_vrf_table_by_fib (rx_fib_index);
+ // default to rx fib
+ u32 tx_fib_index = rx_fib_index;
+
+ if (0 != t)
{
- fei = fib_table_lookup (outside_fib->fib_index, &pfx);
- if (FIB_NODE_INDEX_INVALID != fei)
- {
- if (fib_entry_get_resolving_interface (fei) != ~0)
- {
- return outside_fib->fib_index;
- }
- }
+ // managed routes to other fibs
+ vrf_route_t *r;
+ pool_foreach (r, t->routes)
+ {
+ fei = fib_table_lookup (r->fib_index, &pfx);
+ if ((FIB_NODE_INDEX_INVALID != fei) &&
+ (~0 != fib_entry_get_resolving_interface (fei)))
+ {
+ tx_fib_index = r->fib_index;
+ break;
+ }
+ }
}
- return ~0;
+ else
+ {
+ // default to configured fib
+ tx_fib_index = sm->outside_fib_index;
+
+ // default routes to other fibs
+ nat_fib_t *f;
+ vec_foreach (f, sm->outside_fibs)
+ {
+ fei = fib_table_lookup (f->fib_index, &pfx);
+ if ((FIB_NODE_INDEX_INVALID != fei) &&
+ (~0 != fib_entry_get_resolving_interface (fei)))
+ {
+ tx_fib_index = f->fib_index;
+ break;
+ }
+ }
+ }
+
+ return tx_fib_index;
}
static_always_inline int
-nat44_ed_external_sm_lookup (snat_main_t *sm, ip4_address_t match_addr,
- u16 match_port, nat_protocol_t match_protocol,
- u32 match_fib_index, ip4_address_t *daddr,
- u16 *dport)
+is_destination_resolvable (u32 rx_fib_index, ip4_address_t addr)
{
- clib_bihash_kv_8_8_t kv, value;
- init_nat_k (&kv, match_addr, match_port, match_fib_index, match_protocol);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr = {.ip4.as_u32 = addr.as_u32,}
+ ,
+ };
+
+ snat_main_t *sm = &snat_main;
+ vrf_table_t *t = get_vrf_table_by_fib (rx_fib_index);
+ u32 ii;
+
+ if (0 != t)
{
- /* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, 0, 0);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv,
- &value))
- return 0;
+ // managed routes to other fibs
+ vrf_route_t *r;
+ pool_foreach (r, t->routes)
+ {
+ fei = fib_table_lookup (r->fib_index, &pfx);
+ if ((FIB_NODE_INDEX_INVALID != fei) &&
+ (~0 != (ii = fib_entry_get_resolving_interface (fei))))
+ {
+ return 1;
+ }
+ }
}
-
- snat_static_mapping_t *m =
- pool_elt_at_index (sm->static_mappings, value.value);
- *daddr = m->local_addr;
- if (dport)
+ else
{
- /* Address only mapping doesn't change port */
- *dport = is_sm_addr_only (m->flags) ? match_port : m->local_port;
+ // default routes to other fibs
+ nat_fib_t *f;
+ vec_foreach (f, sm->outside_fibs)
+ {
+ fei = fib_table_lookup (f->fib_index, &pfx);
+ if ((FIB_NODE_INDEX_INVALID != fei) &&
+ (~0 != (ii = fib_entry_get_resolving_interface (fei))))
+ {
+ snat_interface_t *i;
+ pool_foreach (i, sm->interfaces)
+ {
+ if ((nat44_ed_is_interface_outside (i)) &&
+ (ii == i->sw_if_index))
+ {
+ return 1;
+ }
+ }
+ }
+ }
}
- return 1;
+
+ return 0;
}
static u32
slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
ip4_address_t l_addr, ip4_address_t r_addr, u16 l_port,
- u16 r_port, u8 proto, u32 rx_fib_index,
+ u16 r_port, u8 proto, u32 rx_fib_index, u32 tx_sw_if_index,
snat_session_t **sessionp, vlib_node_runtime_t *node, u32 next,
u32 thread_index, f64 now)
{
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
ip4_address_t outside_addr;
u16 outside_port;
- u32 outside_fib_index;
+ u32 tx_fib_index;
u8 is_identity_nat = 0;
- u32 nat_proto = ip_proto_to_nat_proto (proto);
snat_session_t *s = NULL;
lb_nat_type_t lb = 0;
ip4_address_t daddr = r_addr;
@@ -363,33 +460,14 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
}
}
- outside_fib_index = sm->outside_fib_index;
-
- switch (vec_len (sm->outside_fibs))
- {
- case 0:
- outside_fib_index = sm->outside_fib_index;
- break;
- case 1:
- outside_fib_index = sm->outside_fibs[0].fib_index;
- break;
- default:
- outside_fib_index = nat_outside_fib_index_lookup (sm, r_addr);
- break;
- }
-
ip4_address_t sm_addr;
u16 sm_port;
u32 sm_fib_index;
- /* First try to match static mapping by local address and port */
- int is_sm;
- if (snat_static_mapping_match (vm, sm, l_addr, l_port, rx_fib_index,
- nat_proto, &sm_addr, &sm_port, &sm_fib_index,
- 0, 0, 0, &lb, 0, &is_identity_nat, 0))
- {
- is_sm = 0;
- }
- else
+ int is_sm = 0;
+ // First try to match static mapping by local address and port
+ if (!snat_static_mapping_match (vm, l_addr, l_port, rx_fib_index, proto,
+ &sm_addr, &sm_port, &sm_fib_index, 0, 0, 0,
+ &lb, 0, &is_identity_nat, 0))
{
if (PREDICT_FALSE (is_identity_nat))
{
@@ -399,7 +477,7 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
is_sm = 1;
}
- if (PREDICT_TRUE (nat_proto == NAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto == IP_PROTOCOL_TCP))
{
if (PREDICT_FALSE (!tcp_flags_is_init (
vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
@@ -412,28 +490,31 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
s = nat_ed_session_alloc (sm, thread_index, now, proto);
ASSERT (s);
+ tx_fib_index = get_tx_fib_index (rx_fib_index, r_addr);
+
if (!is_sm)
{
s->in2out.addr = l_addr;
s->in2out.port = l_port;
- s->nat_proto = nat_proto;
+ s->proto = proto;
s->in2out.fib_index = rx_fib_index;
- s->out2in.fib_index = outside_fib_index;
+ s->out2in.fib_index = tx_fib_index;
// suggest using local port to allocation function
outside_port = l_port;
- // hairpinning?
- int is_hairpinning = nat44_ed_external_sm_lookup (
- sm, r_addr, r_port, nat_proto, outside_fib_index, &daddr, &dport);
- s->flags |= is_hairpinning * SNAT_SESSION_FLAG_HAIRPINNING;
+ if (PREDICT_FALSE (nat44_ed_external_sm_lookup (sm, r_addr, r_port,
+ proto, &daddr, &dport)))
+ {
+ s->flags |= SNAT_SESSION_FLAG_HAIRPINNING;
+ }
// destination addr/port updated with real values in
// nat_ed_alloc_addr_and_port
nat_6t_o2i_flow_init (sm, thread_index, s, daddr, dport, daddr, 0,
s->out2in.fib_index, proto);
nat_6t_flow_daddr_rewrite_set (&s->o2i, l_addr.as_u32);
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_flow_icmp_id_rewrite_set (&s->o2i, l_port);
}
@@ -442,11 +523,11 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
nat_6t_flow_dport_rewrite_set (&s->o2i, l_port);
}
nat_6t_flow_txfib_rewrite_set (&s->o2i, rx_fib_index);
+ nat_6t_flow_saddr_rewrite_set (&s->o2i, r_addr.as_u32);
if (nat_ed_alloc_addr_and_port (
- sm, rx_fib_index, nat_proto, thread_index, l_addr,
- sm->port_per_thread, tsm->snat_thread_index, s, &outside_addr,
- &outside_port))
+ sm, rx_fib_index, tx_sw_if_index, proto, thread_index, l_addr,
+ r_addr, tsm->snat_thread_index, s, &outside_addr, &outside_port))
{
nat_elog_notice (sm, "addresses exhausted");
b->error = node->errors[NAT_IN2OUT_ED_ERROR_OUT_OF_PORTS];
@@ -463,17 +544,17 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
s->out2in.port = outside_port = sm_port;
s->in2out.addr = l_addr;
s->in2out.port = l_port;
- s->nat_proto = nat_proto;
+ s->proto = proto;
s->in2out.fib_index = rx_fib_index;
- s->out2in.fib_index = outside_fib_index;
+ s->out2in.fib_index = tx_fib_index;
s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
// hairpinning?
- int is_hairpinning = nat44_ed_external_sm_lookup (
- sm, r_addr, r_port, nat_proto, outside_fib_index, &daddr, &dport);
+ int is_hairpinning = nat44_ed_external_sm_lookup (sm, r_addr, r_port,
+ proto, &daddr, &dport);
s->flags |= is_hairpinning * SNAT_SESSION_FLAG_HAIRPINNING;
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_o2i_flow_init (sm, thread_index, s, daddr, sm_port, sm_addr,
sm_port, s->out2in.fib_index, proto);
@@ -487,6 +568,7 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
}
nat_6t_flow_daddr_rewrite_set (&s->o2i, l_addr.as_u32);
nat_6t_flow_txfib_rewrite_set (&s->o2i, rx_fib_index);
+ nat_6t_flow_saddr_rewrite_set (&s->o2i, r_addr.as_u32);
if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 2))
{
nat_elog_notice (sm, "out2in key add failed");
@@ -496,7 +578,6 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
if (lb)
s->flags |= SNAT_SESSION_FLAG_LOAD_BALANCING;
- s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
s->ext_host_addr = r_addr;
s->ext_host_port = r_port;
@@ -505,7 +586,7 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
nat_6t_flow_saddr_rewrite_set (&s->i2o, outside_addr.as_u32);
nat_6t_flow_daddr_rewrite_set (&s->i2o, daddr.as_u32);
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_flow_icmp_id_rewrite_set (&s->i2o, outside_port);
}
@@ -514,7 +595,7 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
nat_6t_flow_sport_rewrite_set (&s->i2o, outside_port);
nat_6t_flow_dport_rewrite_set (&s->i2o, dport);
}
- nat_6t_flow_txfib_rewrite_set (&s->i2o, outside_fib_index);
+ nat_6t_flow_txfib_rewrite_set (&s->i2o, tx_fib_index);
if (nat_ed_ses_i2o_flow_hash_add_del (sm, thread_index, s, 1))
{
@@ -523,17 +604,14 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
}
/* log NAT event */
- nat_ipfix_logging_nat44_ses_create (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port, s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_create (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32, s->proto,
+ s->in2out.port, s->out2in.port, s->in2out.fib_index);
nat_syslog_nat44_sadd (0, s->in2out.fib_index, &s->in2out.addr,
s->in2out.port, &s->ext_host_nat_addr,
s->ext_host_nat_port, &s->out2in.addr, s->out2in.port,
- &s->ext_host_addr, s->ext_host_port, s->nat_proto, 0);
+ &s->ext_host_addr, s->ext_host_port, s->proto, 0);
per_vrf_sessions_register_session (s, thread_index);
@@ -542,12 +620,6 @@ slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
error:
if (s)
{
- if (!is_sm)
- {
- snat_free_outside_address_and_port (sm->addresses, thread_index,
- &outside_addr, outside_port,
- nat_proto);
- }
nat_ed_session_delete (sm, s, thread_index, 1);
}
*sessionp = s = NULL;
@@ -555,38 +627,55 @@ error:
}
static_always_inline int
-nat44_ed_not_translate (vlib_main_t *vm, snat_main_t *sm,
- vlib_node_runtime_t *node, u32 sw_if_index,
- vlib_buffer_t *b, ip4_header_t *ip, u32 proto,
- u32 rx_fib_index, u32 thread_index)
+nat44_ed_not_translate (vlib_main_t *vm, vlib_node_runtime_t *node,
+ u32 sw_if_index, vlib_buffer_t *b, ip4_header_t *ip,
+ u32 proto, u32 rx_fib_index)
{
+ snat_main_t *sm = &snat_main;
+
clib_bihash_kv_16_8_t kv, value;
+ ip4_address_t placeholder_addr;
+ u32 placeholder_fib_index;
+ u16 placeholder_port;
+
+ init_ed_k (&kv, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, sm->outside_fib_index,
+ ip->protocol);
+
+ // do nat if active session or is static mapping
+ if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value) ||
+ !snat_static_mapping_match (
+ vm, ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
+ sm->outside_fib_index, proto, &placeholder_addr, &placeholder_port,
+ &placeholder_fib_index, 1, 0, 0, 0, 0, 0, 0))
+ {
+ return 0;
+ }
- init_ed_k (&kv, ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- sm->outside_fib_index, ip->protocol);
+ // do not nat if forwarding enabled
+ if (sm->forwarding_enabled)
+ {
+ return 1;
+ }
- /* NAT packet aimed at external address if has active sessions */
- if (clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
+ // do not nat packet aimed at the interface address
+ if (PREDICT_FALSE (
+ is_interface_addr (sm, node, sw_if_index, ip->dst_address.as_u32)))
{
- /* or is static mappings */
- ip4_address_t placeholder_addr;
- u16 placeholder_port;
- u32 placeholder_fib_index;
- if (!snat_static_mapping_match (
- vm, sm, ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- sm->outside_fib_index, proto, &placeholder_addr, &placeholder_port,
- &placeholder_fib_index, 1, 0, 0, 0, 0, 0, 0))
- return 0;
+ return 1;
}
- else
- return 0;
- if (sm->forwarding_enabled)
- return 1;
+ // do nat packets with resolvable destination
+ // destination can be resolved either by:
+ // a) vrf routing table entry
+ // b) (non output feature) outside interface fib
+ if (is_destination_resolvable (rx_fib_index, ip->dst_address))
+ {
+ return 0;
+ }
- return snat_not_translate_fast (sm, node, sw_if_index, ip, proto,
- rx_fib_index);
+ return 1;
}
static_always_inline int
@@ -610,18 +699,18 @@ nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
&lookup_sport, &lookup_daddr,
&lookup_dport, &lookup_protocol))
return 0;
- init_ed_k (&kv, lookup_saddr, lookup_sport, lookup_daddr, lookup_dport,
- 0, lookup_protocol);
+ init_ed_k (&kv, lookup_saddr.as_u32, lookup_sport, lookup_daddr.as_u32,
+ lookup_dport, 0, lookup_protocol);
}
else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
{
- init_ed_k (&kv, ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port, 0,
- ip->protocol);
+ init_ed_k (&kv, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, 0, ip->protocol);
}
else
{
- init_ed_k (&kv, ip->src_address, 0, ip->dst_address, 0, 0,
+ init_ed_k (&kv, ip->src_address.as_u32, 0, ip->dst_address.as_u32, 0, 0,
ip->protocol);
}
@@ -632,11 +721,13 @@ nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
pool_elt_at_index (tsm->sessions,
ed_value_get_session_index (&value));
- if (is_fwd_bypass_session (s))
+ if (na44_ed_is_fwd_bypass_session (s))
{
if (ip->protocol == IP_PROTOCOL_TCP)
{
- nat44_set_tcp_session_state_i2o (sm, now, s, b, thread_index);
+ nat44_set_tcp_session_state_i2o (
+ sm, now, s, vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags,
+ thread_index);
}
/* Accounting */
nat44_session_update_counters (s, now,
@@ -658,7 +749,7 @@ nat44_ed_not_translate_output_feature (snat_main_t *sm, vlib_buffer_t *b,
ip4_header_t *ip, u16 src_port,
u16 dst_port, u32 thread_index,
u32 rx_sw_if_index, u32 tx_sw_if_index,
- f64 now, int is_multi_worker)
+ int is_multi_worker)
{
clib_bihash_kv_16_8_t kv, value;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
@@ -668,20 +759,14 @@ nat44_ed_not_translate_output_feature (snat_main_t *sm, vlib_buffer_t *b,
u32 tx_fib_index = ip4_fib_table_get_index_for_sw_if_index (tx_sw_if_index);
/* src NAT check */
- init_ed_k (&kv, ip->src_address, src_port, ip->dst_address, dst_port,
- tx_fib_index, ip->protocol);
+ init_ed_k (&kv, ip->src_address.as_u32, src_port, ip->dst_address.as_u32,
+ dst_port, tx_fib_index, ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
{
ASSERT (thread_index == ed_value_get_thread_index (&value));
s =
pool_elt_at_index (tsm->sessions,
ed_value_get_session_index (&value));
- if (nat44_is_ses_closed (s)
- && (!s->tcp_closed_timestamp || now >= s->tcp_closed_timestamp))
- {
- nat_free_session_data (sm, s, thread_index, 0);
- nat_ed_session_delete (sm, s, thread_index, 1);
- }
return 1;
}
@@ -706,8 +791,8 @@ nat44_ed_not_translate_output_feature (snat_main_t *sm, vlib_buffer_t *b,
s = NULL;
}
- init_ed_k (&kv, ip->dst_address, dst_port, ip->src_address, src_port,
- rx_fib_index, ip->protocol);
+ init_ed_k (&kv, ip->dst_address.as_u32, dst_port, ip->src_address.as_u32,
+ src_port, rx_fib_index, ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
{
ASSERT (thread_index == ed_value_get_thread_index (&value));
@@ -716,15 +801,16 @@ nat44_ed_not_translate_output_feature (snat_main_t *sm, vlib_buffer_t *b,
ed_value_get_session_index (&value));
skip_dst_nat_lookup:
- if (is_fwd_bypass_session (s))
+ if (na44_ed_is_fwd_bypass_session (s))
return 0;
/* hairpinning */
pool_foreach (i, sm->output_feature_interfaces)
- {
- if ((nat_interface_is_inside (i)) && (rx_sw_if_index == i->sw_if_index))
- return 0;
- }
+ {
+ if ((nat44_ed_is_interface_inside (i)) &&
+ (rx_sw_if_index == i->sw_if_index))
+ return 0;
+ }
return 1;
}
@@ -734,9 +820,9 @@ nat44_ed_not_translate_output_feature (snat_main_t *sm, vlib_buffer_t *b,
static inline u32
icmp_in2out_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
icmp46_header_t *icmp, u32 sw_if_index,
- u32 rx_fib_index, vlib_node_runtime_t *node,
- u32 next, f64 now, u32 thread_index,
- nat_protocol_t nat_proto, snat_session_t **s_p,
+ u32 tx_sw_if_index, u32 rx_fib_index,
+ vlib_node_runtime_t *node, u32 next, f64 now,
+ u32 thread_index, snat_session_t **s_p,
int is_multi_worker)
{
vlib_main_t *vm = vlib_get_main ();
@@ -756,20 +842,19 @@ icmp_in2out_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
return NAT_NEXT_DROP;
}
- if (vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0)
+ if (tx_sw_if_index != ~0)
{
if (PREDICT_FALSE (nat44_ed_not_translate_output_feature (
sm, b, ip, lookup_sport, lookup_dport, thread_index, sw_if_index,
- vnet_buffer (b)->sw_if_index[VLIB_TX], now, is_multi_worker)))
+ tx_sw_if_index, is_multi_worker)))
{
return next;
}
}
else
{
- if (PREDICT_FALSE (nat44_ed_not_translate (vm, sm, node, sw_if_index, b,
- ip, NAT_PROTOCOL_ICMP,
- rx_fib_index, thread_index)))
+ if (PREDICT_FALSE (nat44_ed_not_translate (
+ vm, node, sw_if_index, b, ip, IP_PROTOCOL_ICMP, rx_fib_index)))
{
return next;
}
@@ -782,9 +867,10 @@ icmp_in2out_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
return NAT_NEXT_DROP;
}
- next = slow_path_ed (vm, sm, b, ip->src_address, ip->dst_address,
- lookup_sport, lookup_dport, ip->protocol, rx_fib_index,
- &s, node, next, thread_index, vlib_time_now (vm));
+ next =
+ slow_path_ed (vm, sm, b, ip->src_address, ip->dst_address, lookup_sport,
+ lookup_dport, ip->protocol, rx_fib_index, tx_sw_if_index, &s,
+ node, next, thread_index, vlib_time_now (vm));
if (NAT_NEXT_DROP == next)
goto out;
@@ -822,12 +908,11 @@ nat44_ed_in2out_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
vlib_main_t *vm,
vlib_node_runtime_t *node)
{
- clib_bihash_kv_8_8_t kv, value;
clib_bihash_kv_16_8_t s_kv, s_value;
snat_static_mapping_t *m = NULL;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
snat_session_t *s = NULL;
- u32 outside_fib_index = sm->outside_fib_index;
+ u32 tx_fib_index;
int i;
ip4_address_t new_src_addr = { 0 };
ip4_address_t new_dst_addr = ip->dst_address;
@@ -842,25 +927,13 @@ nat44_ed_in2out_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
return 0;
}
- switch (vec_len (sm->outside_fibs))
- {
- case 0:
- outside_fib_index = sm->outside_fib_index;
- break;
- case 1:
- outside_fib_index = sm->outside_fibs[0].fib_index;
- break;
- default:
- outside_fib_index = nat_outside_fib_index_lookup (sm, ip->dst_address);
- break;
- }
+ tx_fib_index = get_tx_fib_index (rx_fib_index, ip->dst_address);
- init_nat_k (&kv, ip->src_address, 0, rx_fib_index, 0);
-
- /* Try to find static mapping first */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ // Try to find static mapping first
+ m = nat44_ed_sm_i2o_lookup (sm, ip->src_address, 0, rx_fib_index,
+ ip->protocol);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
new_src_addr = m->external_addr;
}
else
@@ -869,8 +942,9 @@ nat44_ed_in2out_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
{
if (s->ext_host_addr.as_u32 == ip->dst_address.as_u32)
{
- init_ed_k (&s_kv, s->out2in.addr, 0, ip->dst_address, 0,
- outside_fib_index, ip->protocol);
+ init_ed_k (&s_kv, s->out2in.addr.as_u32, 0,
+ ip->dst_address.as_u32, 0, tx_fib_index,
+ ip->protocol);
if (clib_bihash_search_16_8 (&sm->flow_hash, &s_kv, &s_value))
{
new_src_addr = s->out2in.addr;
@@ -883,8 +957,9 @@ nat44_ed_in2out_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
{
for (i = 0; i < vec_len (sm->addresses); i++)
{
- init_ed_k (&s_kv, sm->addresses[i].addr, 0, ip->dst_address, 0,
- outside_fib_index, ip->protocol);
+ init_ed_k (&s_kv, sm->addresses[i].addr.as_u32, 0,
+ ip->dst_address.as_u32, 0, tx_fib_index,
+ ip->protocol);
if (clib_bihash_search_16_8 (&sm->flow_hash, &s_kv, &s_value))
{
new_src_addr = sm->addresses[i].addr;
@@ -910,28 +985,25 @@ nat44_ed_in2out_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
nat_6t_i2o_flow_init (sm, thread_index, s, ip->src_address, 0,
ip->dst_address, 0, rx_fib_index, ip->protocol);
nat_6t_flow_saddr_rewrite_set (&s->i2o, new_src_addr.as_u32);
- nat_6t_flow_txfib_rewrite_set (&s->i2o, outside_fib_index);
+ nat_6t_flow_txfib_rewrite_set (&s->i2o, tx_fib_index);
// hairpinning?
- int is_hairpinning =
- nat44_ed_external_sm_lookup (sm, ip->dst_address, 0, NAT_PROTOCOL_OTHER,
- outside_fib_index, &new_dst_addr, NULL);
+ int is_hairpinning = nat44_ed_external_sm_lookup (
+ sm, ip->dst_address, 0, ip->protocol, &new_dst_addr, NULL);
s->flags |= is_hairpinning * SNAT_SESSION_FLAG_HAIRPINNING;
nat_6t_flow_daddr_rewrite_set (&s->i2o, new_dst_addr.as_u32);
- nat_6t_flow_txfib_rewrite_set (&s->i2o, outside_fib_index);
+ nat_6t_flow_txfib_rewrite_set (&s->i2o, tx_fib_index);
nat_6t_o2i_flow_init (sm, thread_index, s, new_dst_addr, 0, new_src_addr, 0,
- outside_fib_index, ip->protocol);
+ tx_fib_index, ip->protocol);
nat_6t_flow_saddr_rewrite_set (&s->o2i, ip->dst_address.as_u32);
nat_6t_flow_daddr_rewrite_set (&s->o2i, ip->src_address.as_u32);
nat_6t_flow_txfib_rewrite_set (&s->o2i, rx_fib_index);
s->ext_host_addr.as_u32 = ip->dst_address.as_u32;
- s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
- s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
s->out2in.addr.as_u32 = new_src_addr.as_u32;
- s->out2in.fib_index = outside_fib_index;
+ s->out2in.fib_index = tx_fib_index;
s->in2out.addr.as_u32 = ip->src_address.as_u32;
s->in2out.fib_index = rx_fib_index;
s->in2out.port = s->out2in.port = ip->protocol;
@@ -988,11 +1060,13 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
while (n_left_from > 0)
{
vlib_buffer_t *b0;
- u32 sw_if_index0, rx_fib_index0, iph_offset0 = 0;
- nat_protocol_t proto0;
+ u32 rx_sw_if_index0, rx_fib_index0, iph_offset0 = 0;
+ u32 tx_sw_if_index0;
+ u32 cntr_sw_if_index0;
+ ip_protocol_t proto0;
ip4_header_t *ip0;
snat_session_t *s0 = 0;
- clib_bihash_kv_16_8_t kv0, value0;
+ clib_bihash_kv_16_8_t kv0 = { 0 }, value0;
nat_translation_error_e translation_error = NAT_ED_TRNSL_ERR_SUCCESS;
nat_6t_flow_t *f = 0;
nat_6t_t lookup;
@@ -1023,9 +1097,12 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
ip0 =
(ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) + iph_offset0);
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 =
- fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index0);
+ rx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ tx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ cntr_sw_if_index0 =
+ is_output_feature ? tx_sw_if_index0 : rx_sw_if_index0;
+ rx_fib_index0 = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ rx_sw_if_index0);
lookup.fib_index = rx_fib_index0;
if (PREDICT_FALSE (!is_output_feature && ip0->ttl == 1))
@@ -1038,7 +1115,7 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
goto trace0;
}
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip0->protocol;
if (is_output_feature)
{
@@ -1048,7 +1125,7 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
goto trace0;
}
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == IP_PROTOCOL_ICMP))
{
if (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags !=
ICMP4_echo_request &&
@@ -1102,8 +1179,8 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
s0 = NULL;
}
- init_ed_k (&kv0, lookup.saddr, lookup.sport, lookup.daddr, lookup.dport,
- lookup.fib_index, lookup.proto);
+ init_ed_k (&kv0, lookup.saddr.as_u32, lookup.sport, lookup.daddr.as_u32,
+ lookup.dport, lookup.fib_index, lookup.proto);
// lookup flow
if (clib_bihash_search_16_8 (&sm->flow_hash, &kv0, &value0))
@@ -1125,25 +1202,10 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
if (PREDICT_FALSE (per_vrf_sessions_is_expired (s0, thread_index)))
{
// session is closed, go slow path
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
- next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- goto trace0;
- }
-
- if (s0->tcp_closed_timestamp)
- {
- if (now >= s0->tcp_closed_timestamp)
- {
- // session is closed, go slow path, freed in slow path
- next[0] = def_slow;
- }
- else
- {
- // session in transitory timeout, drop
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TCP_CLOSED];
- next[0] = NAT_NEXT_DROP;
- }
+ s0 = 0;
+ next[0] = def_slow;
goto trace0;
}
@@ -1153,8 +1215,9 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
s0->last_heard + (f64) nat44_session_get_timeout (sm, s0);
if (now >= sess_timeout_time)
{
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
// session is closed, go slow path
next[0] = def_slow;
goto trace0;
@@ -1174,8 +1237,9 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
else
{
translation_error = NAT_ED_TRNSL_ERR_FLOW_MISMATCH;
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
next[0] = NAT_NEXT_DROP;
b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TRNSL_FAILED];
goto trace0;
@@ -1185,8 +1249,9 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
(translation_error = nat_6t_flow_buf_translate_i2o (
vm, sm, b0, ip0, f, proto0, is_output_feature)))
{
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
next[0] = NAT_NEXT_DROP;
b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TRNSL_FAILED];
goto trace0;
@@ -1194,22 +1259,24 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
switch (proto0)
{
- case NAT_PROTOCOL_TCP:
+ case IP_PROTOCOL_TCP:
vlib_increment_simple_counter (&sm->counters.fastpath.in2out.tcp,
- thread_index, sw_if_index0, 1);
- nat44_set_tcp_session_state_i2o (sm, now, s0, b0, thread_index);
+ thread_index, cntr_sw_if_index0, 1);
+ nat44_set_tcp_session_state_i2o (
+ sm, now, s0, vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags,
+ thread_index);
break;
- case NAT_PROTOCOL_UDP:
+ case IP_PROTOCOL_UDP:
vlib_increment_simple_counter (&sm->counters.fastpath.in2out.udp,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
break;
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
vlib_increment_simple_counter (&sm->counters.fastpath.in2out.icmp,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
break;
- case NAT_PROTOCOL_OTHER:
+ default:
vlib_increment_simple_counter (&sm->counters.fastpath.in2out.other,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
break;
}
@@ -1227,7 +1294,7 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
{
nat_in2out_ed_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
+ t->sw_if_index = rx_sw_if_index0;
t->next_index = next[0];
t->is_slow_path = 0;
t->translation_error = translation_error;
@@ -1240,6 +1307,7 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
clib_memcpy (&t->i2of, &s0->i2o, sizeof (t->i2of));
clib_memcpy (&t->o2if, &s0->o2i, sizeof (t->o2if));
t->translation_via_i2of = (&s0->i2o == f);
+ t->tcp_state = s0->tcp_state;
}
else
{
@@ -1250,7 +1318,7 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
if (next[0] == NAT_NEXT_DROP)
{
vlib_increment_simple_counter (&sm->counters.fastpath.in2out.drops,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
}
n_left_from--;
@@ -1285,13 +1353,15 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
while (n_left_from > 0)
{
vlib_buffer_t *b0;
- u32 sw_if_index0, rx_fib_index0, iph_offset0 = 0;
- nat_protocol_t proto0;
+ u32 rx_sw_if_index0, rx_fib_index0, iph_offset0 = 0;
+ u32 tx_sw_if_index0;
+ u32 cntr_sw_if_index0;
+ ip_protocol_t proto0;
ip4_header_t *ip0;
udp_header_t *udp0;
icmp46_header_t *icmp0;
snat_session_t *s0 = 0;
- clib_bihash_kv_16_8_t kv0, value0;
+ clib_bihash_kv_16_8_t kv0 = { 0 }, value0;
int translation_error = NAT_ED_TRNSL_ERR_SUCCESS;
b0 = *b;
@@ -1304,9 +1374,12 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
iph_offset0);
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 =
- fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index0);
+ rx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ tx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ cntr_sw_if_index0 =
+ is_output_feature ? tx_sw_if_index0 : rx_sw_if_index0;
+ rx_fib_index0 = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ rx_sw_if_index0);
if (PREDICT_FALSE (!is_output_feature && ip0->ttl == 1))
{
@@ -1320,9 +1393,9 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
udp0 = ip4_next_header (ip0);
icmp0 = (icmp46_header_t *) udp0;
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip0->protocol;
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
+ if (PREDICT_FALSE (nat44_ed_is_unk_proto (proto0)))
{
s0 = nat44_ed_in2out_slowpath_unknown_proto (
sm, b0, ip0, rx_fib_index0, thread_index, now, vm, node);
@@ -1334,57 +1407,57 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
(translation_error = nat_6t_flow_buf_translate_i2o (
vm, sm, b0, ip0, &s0->i2o, proto0, is_output_feature)))
{
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
next[0] = NAT_NEXT_DROP;
b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TRNSL_FAILED];
goto trace0;
}
vlib_increment_simple_counter (&sm->counters.slowpath.in2out.other,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
goto trace0;
}
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == IP_PROTOCOL_ICMP))
{
next[0] = icmp_in2out_ed_slow_path (
- sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, next[0],
- now, thread_index, proto0, &s0, is_multi_worker);
+ sm, b0, ip0, icmp0, rx_sw_if_index0, tx_sw_if_index0,
+ rx_fib_index0, node, next[0], now, thread_index, &s0,
+ is_multi_worker);
if (NAT_NEXT_DROP != next[0] && s0 &&
NAT_ED_TRNSL_ERR_SUCCESS !=
(translation_error = nat_6t_flow_buf_translate_i2o (
vm, sm, b0, ip0, &s0->i2o, proto0, is_output_feature)))
{
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
next[0] = NAT_NEXT_DROP;
b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TRNSL_FAILED];
goto trace0;
}
- vlib_increment_simple_counter (&sm->counters.slowpath.in2out.icmp,
- thread_index, sw_if_index0, 1);
+ if (NAT_NEXT_DROP != next[0])
+ {
+ vlib_increment_simple_counter (
+ &sm->counters.slowpath.in2out.icmp, thread_index,
+ cntr_sw_if_index0, 1);
+ }
goto trace0;
}
- init_ed_k (&kv0, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0,
- ip0->protocol);
+ init_ed_k (
+ &kv0, ip0->src_address.as_u32, vnet_buffer (b0)->ip.reass.l4_src_port,
+ ip0->dst_address.as_u32, vnet_buffer (b0)->ip.reass.l4_dst_port,
+ rx_fib_index0, ip0->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv0, &value0))
{
ASSERT (thread_index == ed_value_get_thread_index (&value0));
s0 =
pool_elt_at_index (tsm->sessions,
ed_value_get_session_index (&value0));
-
- if (s0->tcp_closed_timestamp && now >= s0->tcp_closed_timestamp)
- {
- nat_free_session_data (sm, s0, thread_index, 0);
- nat_ed_session_delete (sm, s0, thread_index, 1);
- s0 = NULL;
- }
}
if (!s0)
@@ -1394,34 +1467,34 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
if (PREDICT_FALSE (nat44_ed_not_translate_output_feature (
sm, b0, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
vnet_buffer (b0)->ip.reass.l4_dst_port, thread_index,
- sw_if_index0, vnet_buffer (b0)->sw_if_index[VLIB_TX], now,
- is_multi_worker)))
+ rx_sw_if_index0, tx_sw_if_index0, is_multi_worker)))
goto trace0;
/*
* Send DHCP packets to the ipv4 stack, or we won't
* be able to use dhcp client on the outside interface
*/
- if (PREDICT_FALSE
- (proto0 == NAT_PROTOCOL_UDP
- && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
- clib_host_to_net_u16 (UDP_DST_PORT_dhcp_to_server))
- && ip0->dst_address.as_u32 == 0xffffffff))
+ if (PREDICT_FALSE (
+ proto0 == IP_PROTOCOL_UDP &&
+ (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16 (UDP_DST_PORT_dhcp_to_server)) &&
+ ip0->dst_address.as_u32 == 0xffffffff))
goto trace0;
}
else
{
- if (PREDICT_FALSE (nat44_ed_not_translate (
- vm, sm, node, sw_if_index0, b0, ip0, proto0, rx_fib_index0,
- thread_index)))
+ if (PREDICT_FALSE (
+ nat44_ed_not_translate (vm, node, rx_sw_if_index0, b0, ip0,
+ proto0, rx_fib_index0)))
goto trace0;
}
- next[0] = slow_path_ed (
- vm, sm, b0, ip0->src_address, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port, ip0->protocol,
- rx_fib_index0, &s0, node, next[0], thread_index, now);
+ next[0] =
+ slow_path_ed (vm, sm, b0, ip0->src_address, ip0->dst_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ ip0->protocol, rx_fib_index0, tx_sw_if_index0, &s0,
+ node, next[0], thread_index, now);
if (PREDICT_FALSE (next[0] == NAT_NEXT_DROP))
goto trace0;
@@ -1437,23 +1510,26 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
(translation_error = nat_6t_flow_buf_translate_i2o (
vm, sm, b0, ip0, &s0->i2o, proto0, is_output_feature)))
{
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
next[0] = NAT_NEXT_DROP;
b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TRNSL_FAILED];
goto trace0;
}
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == IP_PROTOCOL_TCP))
{
vlib_increment_simple_counter (&sm->counters.slowpath.in2out.tcp,
- thread_index, sw_if_index0, 1);
- nat44_set_tcp_session_state_i2o (sm, now, s0, b0, thread_index);
+ thread_index, cntr_sw_if_index0, 1);
+ nat44_set_tcp_session_state_i2o (
+ sm, now, s0, vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags,
+ thread_index);
}
else
{
vlib_increment_simple_counter (&sm->counters.slowpath.in2out.udp,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
}
/* Accounting */
@@ -1469,7 +1545,7 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
{
nat_in2out_ed_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
+ t->sw_if_index = rx_sw_if_index0;
t->next_index = next[0];
t->is_slow_path = 1;
t->translation_error = translation_error;
@@ -1481,6 +1557,7 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
clib_memcpy (&t->i2of, &s0->i2o, sizeof (t->i2of));
clib_memcpy (&t->o2if, &s0->o2i, sizeof (t->o2if));
t->translation_via_i2of = 1;
+ t->tcp_state = s0->tcp_state;
}
else
@@ -1492,7 +1569,7 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
if (next[0] == NAT_NEXT_DROP)
{
vlib_increment_simple_counter (&sm->counters.slowpath.in2out.drops,
- thread_index, sw_if_index0, 1);
+ thread_index, cntr_sw_if_index0, 1);
}
n_left_from--;
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_inlines.h b/src/plugins/nat/nat44-ed/nat44_ed_inlines.h
index 0d75e736849..04e5236b7f9 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_inlines.h
+++ b/src/plugins/nat/nat44-ed/nat44_ed_inlines.h
@@ -12,6 +12,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+
/**
* @brief The NAT inline functions
*/
@@ -24,116 +25,53 @@
#include <vnet/fib/ip4_fib.h>
#include <nat/lib/log.h>
+#include <nat/lib/ipfix_logging.h>
#include <nat/nat44-ed/nat44_ed.h>
-always_inline u64
-calc_nat_key (ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
-{
- ASSERT (fib_index <= (1 << 14) - 1);
- ASSERT (proto <= (1 << 3) - 1);
- return (u64) addr.as_u32 << 32 | (u64) port << 16 | fib_index << 3 |
- (proto & 0x7);
-}
-
-always_inline void
-split_nat_key (u64 key, ip4_address_t *addr, u16 *port, u32 *fib_index,
- nat_protocol_t *proto)
-{
- if (addr)
- {
- addr->as_u32 = key >> 32;
- }
- if (port)
- {
- *port = (key >> 16) & (u16) ~0;
- }
- if (fib_index)
- {
- *fib_index = key >> 3 & ((1 << 13) - 1);
- }
- if (proto)
- {
- *proto = key & 0x7;
- }
-}
-
always_inline void
-init_nat_k (clib_bihash_kv_8_8_t *kv, ip4_address_t addr, u16 port,
- u32 fib_index, nat_protocol_t proto)
+init_ed_k (clib_bihash_kv_16_8_t *kv, u32 l_addr, u16 l_port, u32 r_addr,
+ u16 r_port, u32 fib_index, ip_protocol_t proto)
{
- kv->key = calc_nat_key (addr, port, fib_index, proto);
- kv->value = ~0ULL;
+ kv->key[0] = (u64) r_addr << 32 | l_addr;
+ kv->key[1] =
+ (u64) r_port << 48 | (u64) l_port << 32 | fib_index << 8 | proto;
}
always_inline void
-init_nat_kv (clib_bihash_kv_8_8_t *kv, ip4_address_t addr, u16 port,
- u32 fib_index, nat_protocol_t proto, u32 thread_index,
- u32 session_index)
+init_ed_kv (clib_bihash_kv_16_8_t *kv, u32 l_addr, u16 l_port, u32 r_addr,
+ u16 r_port, u32 fib_index, u8 proto, u32 thread_index,
+ u32 session_index)
{
- init_nat_k (kv, addr, port, fib_index, proto);
+ init_ed_k (kv, l_addr, l_port, r_addr, r_port, fib_index, proto);
kv->value = (u64) thread_index << 32 | session_index;
}
always_inline void
-init_nat_i2o_k (clib_bihash_kv_8_8_t *kv, snat_session_t *s)
+nat44_ed_sm_init_i2o_kv (clib_bihash_kv_16_8_t *kv, u32 addr, u16 port,
+ u32 fib_index, u8 proto, u32 sm_index)
{
- return init_nat_k (kv, s->in2out.addr, s->in2out.port, s->in2out.fib_index,
- s->nat_proto);
+ return init_ed_kv (kv, addr, port, 0, 0, fib_index, proto, 0, sm_index);
}
always_inline void
-init_nat_i2o_kv (clib_bihash_kv_8_8_t *kv, snat_session_t *s, u32 thread_index,
- u32 session_index)
+nat44_ed_sm_init_o2i_kv (clib_bihash_kv_16_8_t *kv, u32 e_addr, u16 e_port,
+ u32 fib_index, u8 proto, u32 sm_index)
{
- init_nat_k (kv, s->in2out.addr, s->in2out.port, s->in2out.fib_index,
- s->nat_proto);
- kv->value = (u64) thread_index << 32 | session_index;
+ return init_ed_kv (kv, 0, 0, e_addr, e_port, fib_index, proto, 0, sm_index);
}
always_inline void
-init_nat_o2i_k (clib_bihash_kv_8_8_t *kv, snat_session_t *s)
+nat44_ed_sm_init_i2o_k (clib_bihash_kv_16_8_t *kv, u32 addr, u16 port,
+ u32 fib_index, u8 proto)
{
- return init_nat_k (kv, s->out2in.addr, s->out2in.port, s->out2in.fib_index,
- s->nat_proto);
+ return nat44_ed_sm_init_i2o_kv (kv, addr, port, fib_index, proto, 0);
}
always_inline void
-init_nat_o2i_kv (clib_bihash_kv_8_8_t *kv, snat_session_t *s, u32 thread_index,
- u32 session_index)
+nat44_ed_sm_init_o2i_k (clib_bihash_kv_16_8_t *kv, u32 e_addr, u16 e_port,
+ u32 fib_index, u8 proto)
{
- init_nat_k (kv, s->out2in.addr, s->out2in.port, s->out2in.fib_index,
- s->nat_proto);
- kv->value = (u64) thread_index << 32 | session_index;
-}
-
-always_inline u32
-nat_value_get_thread_index (clib_bihash_kv_8_8_t *value)
-{
- return value->value >> 32;
-}
-
-always_inline u32
-nat_value_get_session_index (clib_bihash_kv_8_8_t *value)
-{
- return value->value & ~(u32) 0;
-}
-
-always_inline void
-init_ed_k (clib_bihash_kv_16_8_t *kv, ip4_address_t l_addr, u16 l_port,
- ip4_address_t r_addr, u16 r_port, u32 fib_index, u8 proto)
-{
- kv->key[0] = (u64) r_addr.as_u32 << 32 | l_addr.as_u32;
- kv->key[1] =
- (u64) r_port << 48 | (u64) l_port << 32 | fib_index << 8 | proto;
-}
-
-always_inline void
-init_ed_kv (clib_bihash_kv_16_8_t *kv, ip4_address_t l_addr, u16 l_port,
- ip4_address_t r_addr, u16 r_port, u32 fib_index, u8 proto,
- u32 thread_index, u32 session_index)
-{
- init_ed_k (kv, l_addr, l_port, r_addr, r_port, fib_index, proto);
- kv->value = (u64) thread_index << 32 | session_index;
+ return nat44_ed_sm_init_o2i_kv (kv, e_addr, e_port, fib_index, proto, 0);
}
always_inline u32
@@ -187,13 +125,13 @@ nat_get_icmp_session_lookup_values (vlib_buffer_t *b, ip4_header_t *ip0,
u16 *lookup_dport, u8 *lookup_protocol)
{
icmp46_header_t *icmp0;
- icmp_echo_header_t *echo0, *inner_echo0 = 0;
+ nat_icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0 = 0;
void *l4_header = 0;
icmp46_header_t *inner_icmp0;
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
- echo0 = (icmp_echo_header_t *) (icmp0 + 1);
+ echo0 = (nat_icmp_echo_header_t *) (icmp0 + 1);
// avoid warning about unused variables in caller by setting to bogus values
*lookup_sport = 0;
@@ -215,18 +153,18 @@ nat_get_icmp_session_lookup_values (vlib_buffer_t *b, ip4_header_t *ip0,
*lookup_protocol = inner_ip0->protocol;
lookup_saddr->as_u32 = inner_ip0->dst_address.as_u32;
lookup_daddr->as_u32 = inner_ip0->src_address.as_u32;
- switch (ip_proto_to_nat_proto (inner_ip0->protocol))
+ switch (inner_ip0->protocol)
{
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
inner_icmp0 = (icmp46_header_t *) l4_header;
- inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
+ inner_echo0 = (nat_icmp_echo_header_t *) (inner_icmp0 + 1);
*lookup_sport = inner_echo0->identifier;
*lookup_dport = inner_echo0->identifier;
break;
- case NAT_PROTOCOL_UDP:
- case NAT_PROTOCOL_TCP:
- *lookup_sport = ((tcp_udp_header_t *) l4_header)->dst_port;
- *lookup_dport = ((tcp_udp_header_t *) l4_header)->src_port;
+ case IP_PROTOCOL_UDP:
+ case IP_PROTOCOL_TCP:
+ *lookup_sport = ((nat_tcp_udp_header_t *) l4_header)->dst_port;
+ *lookup_dport = ((nat_tcp_udp_header_t *) l4_header)->src_port;
break;
default:
return NAT_IN2OUT_ED_ERROR_UNSUPPORTED_PROTOCOL;
@@ -235,21 +173,29 @@ nat_get_icmp_session_lookup_values (vlib_buffer_t *b, ip4_header_t *ip0,
return 0;
}
+always_inline int
+nat44_ed_tcp_is_established (nat44_ed_tcp_state_e state)
+{
+ return state == NAT44_ED_TCP_STATE_ESTABLISHED ? 1 : 0;
+}
+
always_inline u32
nat44_session_get_timeout (snat_main_t *sm, snat_session_t *s)
{
- switch (s->nat_proto)
+ switch (s->proto)
{
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
+ /* fallthrough */
+ case IP_PROTOCOL_ICMP6:
return sm->timeouts.icmp;
- case NAT_PROTOCOL_UDP:
+ case IP_PROTOCOL_UDP:
return sm->timeouts.udp;
- case NAT_PROTOCOL_TCP:
+ case IP_PROTOCOL_TCP:
{
- if (s->state)
- return sm->timeouts.tcp.transitory;
- else
+ if (nat44_ed_tcp_is_established (s->tcp_state))
return sm->timeouts.tcp.established;
+ else
+ return sm->timeouts.tcp.transitory;
}
default:
return sm->timeouts.udp;
@@ -300,7 +246,7 @@ nat_ed_lru_insert (snat_main_per_thread_data_t *tsm, snat_session_t *s,
static_always_inline void
nat_6t_flow_to_ed_k (clib_bihash_kv_16_8_t *kv, nat_6t_flow_t *f)
{
- init_ed_k (kv, f->match.saddr, f->match.sport, f->match.daddr,
+ init_ed_k (kv, f->match.saddr.as_u32, f->match.sport, f->match.daddr.as_u32,
f->match.dport, f->match.fib_index, f->match.proto);
}
@@ -308,7 +254,7 @@ static_always_inline void
nat_6t_flow_to_ed_kv (clib_bihash_kv_16_8_t *kv, nat_6t_flow_t *f,
u32 thread_idx, u32 session_idx)
{
- init_ed_kv (kv, f->match.saddr, f->match.sport, f->match.daddr,
+ init_ed_kv (kv, f->match.saddr.as_u32, f->match.sport, f->match.daddr.as_u32,
f->match.dport, f->match.fib_index, f->match.proto, thread_idx,
session_idx);
}
@@ -348,6 +294,15 @@ nat_ed_ses_o2i_flow_hash_add_del (snat_main_t *sm, u32 thread_idx,
else
{
nat_6t_flow_to_ed_kv (&kv, &s->o2i, thread_idx, s - tsm->sessions);
+ if (!(s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING))
+ {
+ if (nat44_ed_sm_o2i_lookup (sm, s->o2i.match.daddr,
+ s->o2i.match.dport, 0,
+ s->o2i.match.proto))
+ {
+ return -1;
+ }
+ }
nat_6t_l3_l4_csum_calc (&s->o2i);
}
ASSERT (thread_idx == s->thread_index);
@@ -393,10 +348,9 @@ nat_lru_free_one_with_head (snat_main_t *sm, int thread_index, f64 now,
sess_timeout_time =
s->last_heard + (f64) nat44_session_get_timeout (sm, s);
- if (now >= sess_timeout_time ||
- (s->tcp_closed_timestamp && now >= s->tcp_closed_timestamp))
+ if (now >= sess_timeout_time)
{
- nat_free_session_data (sm, s, thread_index, 0);
+ nat44_ed_free_session_data (sm, s, thread_index, 0);
nat_ed_session_delete (sm, s, thread_index, 0);
return 1;
}
@@ -460,23 +414,16 @@ per_vrf_sessions_cleanup (u32 thread_index)
per_vrf_sessions_t *per_vrf_sessions;
u32 *to_free = 0, *i;
- vec_foreach (per_vrf_sessions, tsm->per_vrf_sessions_vec)
+ pool_foreach (per_vrf_sessions, tsm->per_vrf_sessions_pool)
{
- if (per_vrf_sessions->expired)
- {
- if (per_vrf_sessions->ses_count == 0)
- {
- vec_add1 (to_free, per_vrf_sessions - tsm->per_vrf_sessions_vec);
- }
- }
+ if (per_vrf_sessions->expired && per_vrf_sessions->ses_count == 0)
+ vec_add1 (to_free, per_vrf_sessions - tsm->per_vrf_sessions_pool);
}
- if (vec_len (to_free))
+ vec_foreach (i, to_free)
{
- vec_foreach (i, to_free)
- {
- vec_del1 (tsm->per_vrf_sessions_vec, *i);
- }
+ per_vrf_sessions = pool_elt_at_index (tsm->per_vrf_sessions_pool, *i);
+ pool_put (tsm->per_vrf_sessions_pool, per_vrf_sessions);
}
vec_free (to_free);
@@ -495,7 +442,7 @@ per_vrf_sessions_register_session (snat_session_t *s, u32 thread_index)
// s->per_vrf_sessions_index == ~0 ... reuse of old session
- vec_foreach (per_vrf_sessions, tsm->per_vrf_sessions_vec)
+ pool_foreach (per_vrf_sessions, tsm->per_vrf_sessions_pool)
{
// ignore already expired registrations
if (per_vrf_sessions->expired)
@@ -514,14 +461,13 @@ per_vrf_sessions_register_session (snat_session_t *s, u32 thread_index)
}
// create a new registration
- vec_add2 (tsm->per_vrf_sessions_vec, per_vrf_sessions, 1);
+ pool_get (tsm->per_vrf_sessions_pool, per_vrf_sessions);
clib_memset (per_vrf_sessions, 0, sizeof (*per_vrf_sessions));
-
per_vrf_sessions->rx_fib_index = s->in2out.fib_index;
per_vrf_sessions->tx_fib_index = s->out2in.fib_index;
done:
- s->per_vrf_sessions_index = per_vrf_sessions - tsm->per_vrf_sessions_vec;
+ s->per_vrf_sessions_index = per_vrf_sessions - tsm->per_vrf_sessions_pool;
per_vrf_sessions->ses_count++;
}
@@ -537,7 +483,7 @@ per_vrf_sessions_unregister_session (snat_session_t *s, u32 thread_index)
tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
per_vrf_sessions =
- vec_elt_at_index (tsm->per_vrf_sessions_vec, s->per_vrf_sessions_index);
+ pool_elt_at_index (tsm->per_vrf_sessions_pool, s->per_vrf_sessions_index);
ASSERT (per_vrf_sessions->ses_count != 0);
@@ -557,7 +503,7 @@ per_vrf_sessions_is_expired (snat_session_t *s, u32 thread_index)
tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
per_vrf_sessions =
- vec_elt_at_index (tsm->per_vrf_sessions_vec, s->per_vrf_sessions_index);
+ pool_elt_at_index (tsm->per_vrf_sessions_pool, s->per_vrf_sessions_index);
return per_vrf_sessions->expired;
}
@@ -754,100 +700,120 @@ is_interface_addr (snat_main_t *sm, vlib_node_runtime_t *node,
}
always_inline void
-nat44_set_tcp_session_state_i2o (snat_main_t *sm, f64 now, snat_session_t *ses,
- vlib_buffer_t *b, u32 thread_index)
+nat44_ed_session_reopen (u32 thread_index, snat_session_t *s)
+{
+ nat_syslog_nat44_sdel (0, s->in2out.fib_index, &s->in2out.addr,
+ s->in2out.port, &s->ext_host_nat_addr,
+ s->ext_host_nat_port, &s->out2in.addr, s->out2in.port,
+ &s->ext_host_addr, s->ext_host_port, s->proto,
+ nat44_ed_is_twice_nat_session (s));
+
+ nat_ipfix_logging_nat44_ses_delete (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32, s->proto,
+ s->in2out.port, s->out2in.port, s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_create (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32, s->proto,
+ s->in2out.port, s->out2in.port, s->in2out.fib_index);
+
+ nat_syslog_nat44_sadd (0, s->in2out.fib_index, &s->in2out.addr,
+ s->in2out.port, &s->ext_host_nat_addr,
+ s->ext_host_nat_port, &s->out2in.addr, s->out2in.port,
+ &s->ext_host_addr, s->ext_host_port, s->proto, 0);
+ s->total_pkts = 0;
+ s->total_bytes = 0;
+}
+
+/*
+ * "Some rise by SYN, and some by virtue FIN" - William Shakespeare
+ * TCP state tracking patterned after RFC 7857 (and RFC 6146, which is
+ * referenced by RFC 7857). In contrast to the state machine in RFC7857 we only
+ * transition to ESTABLISHED state after seeing a full 3-way handshake (SYNs
+ * and ACKs in both directions). RFC7857 as a means of protecting against
+ * spurious RSTs closing a session, goes back to ESTABLISHED if a data packet
+ * is received after the RST. This state machine will leave the state in
+ * transitory if RST is seen. Our implementation also goes beyond by supporting
+ * creation of a new session while old session is in transitory timeout after
+ * seeing FIN packets from both sides.
+ */
+always_inline void
+nat44_set_tcp_session_state (snat_main_t *sm, f64 now, snat_session_t *ses,
+ u8 tcp_flags, u32 thread_index,
+ nat44_ed_dir_e dir)
{
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- u8 tcp_flags = vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags;
- u32 tcp_ack_number = vnet_buffer (b)->ip.reass.tcp_ack_number;
- u32 tcp_seq_number = vnet_buffer (b)->ip.reass.tcp_seq_number;
- if ((ses->state == 0) && (tcp_flags & TCP_FLAG_RST))
- ses->state = NAT44_SES_RST;
- if ((ses->state == NAT44_SES_RST) && !(tcp_flags & TCP_FLAG_RST))
- ses->state = 0;
- if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) &&
- (ses->state & NAT44_SES_O2I_SYN))
- ses->state = 0;
- if (tcp_flags & TCP_FLAG_SYN)
- ses->state |= NAT44_SES_I2O_SYN;
- if (tcp_flags & TCP_FLAG_FIN)
- {
- ses->i2o_fin_seq = clib_net_to_host_u32 (tcp_seq_number);
- ses->state |= NAT44_SES_I2O_FIN;
- }
- if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_O2I_FIN))
+ u8 old_flags = ses->tcp_flags[dir];
+ ses->tcp_flags[dir] |=
+ tcp_flags & (TCP_FLAG_FIN | TCP_FLAG_SYN | TCP_FLAG_RST | TCP_FLAG_ACK);
+ if (old_flags == ses->tcp_flags[dir])
+ return;
+
+ u8 old_state = ses->tcp_state;
+
+ switch (old_state)
{
- if (clib_net_to_host_u32 (tcp_ack_number) > ses->o2i_fin_seq)
+ case NAT44_ED_TCP_STATE_CLOSED:
+ // ESTABLISHED when a SYN and ACK is seen from both sides
+ if ((ses->tcp_flags[NAT44_ED_DIR_I2O] &
+ ses->tcp_flags[NAT44_ED_DIR_O2I]) == (TCP_FLAG_SYN | TCP_FLAG_ACK))
{
- ses->state |= NAT44_SES_O2I_FIN_ACK;
- if (nat44_is_ses_closed (ses))
- { // if session is now closed, save the timestamp
- ses->tcp_closed_timestamp = now + sm->timeouts.tcp.transitory;
- ses->last_lru_update = now;
- }
+ ses->tcp_state = NAT44_ED_TCP_STATE_ESTABLISHED;
+ ses->lru_head_index = tsm->tcp_estab_lru_head_index;
}
+ break;
+ case NAT44_ED_TCP_STATE_ESTABLISHED:
+ // CLOSING when a FIN is seen from either side or session has been RST
+ if ((ses->tcp_flags[dir] & TCP_FLAG_FIN) ||
+ (ses->tcp_flags[dir] & TCP_FLAG_RST))
+ {
+ ses->tcp_state = NAT44_ED_TCP_STATE_CLOSING;
+ ses->tcp_flags[NAT44_ED_DIR_I2O] = 0;
+ ses->tcp_flags[NAT44_ED_DIR_O2I] = 0;
+ // need to update last heard otherwise session might get
+ // immediately timed out if it has been idle longer than
+ // transitory timeout
+ ses->last_heard = now;
+ ses->lru_head_index = tsm->tcp_trans_lru_head_index;
+ }
+ break;
+ case NAT44_ED_TCP_STATE_CLOSING:
+ // Allow a transitory session to reopen
+ if ((ses->tcp_flags[NAT44_ED_DIR_I2O] &
+ ses->tcp_flags[NAT44_ED_DIR_O2I]) == (TCP_FLAG_SYN | TCP_FLAG_ACK))
+ {
+ nat44_ed_session_reopen (thread_index, ses);
+ ses->tcp_state = NAT44_ED_TCP_STATE_ESTABLISHED;
+ ses->lru_head_index = tsm->tcp_estab_lru_head_index;
+ }
+ break;
}
-
- // move the session to proper LRU
- if (ses->state)
- {
- ses->lru_head_index = tsm->tcp_trans_lru_head_index;
- }
- else
- {
- ses->lru_head_index = tsm->tcp_estab_lru_head_index;
- }
+ if (old_state == ses->tcp_state)
+ return;
+ ses->last_lru_update = now;
clib_dlist_remove (tsm->lru_pool, ses->lru_index);
clib_dlist_addtail (tsm->lru_pool, ses->lru_head_index, ses->lru_index);
}
always_inline void
+nat44_set_tcp_session_state_i2o (snat_main_t *sm, f64 now, snat_session_t *ses,
+ u8 tcp_flags, u32 thread_index)
+{
+ return nat44_set_tcp_session_state (sm, now, ses, tcp_flags, thread_index,
+ NAT44_ED_DIR_I2O);
+}
+
+always_inline void
nat44_set_tcp_session_state_o2i (snat_main_t *sm, f64 now, snat_session_t *ses,
- u8 tcp_flags, u32 tcp_ack_number,
- u32 tcp_seq_number, u32 thread_index)
+ u8 tcp_flags, u32 thread_index)
{
- snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- if ((ses->state == 0) && (tcp_flags & TCP_FLAG_RST))
- ses->state = NAT44_SES_RST;
- if ((ses->state == NAT44_SES_RST) && !(tcp_flags & TCP_FLAG_RST))
- ses->state = 0;
- if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) &&
- (ses->state & NAT44_SES_O2I_SYN))
- ses->state = 0;
- if (tcp_flags & TCP_FLAG_SYN)
- ses->state |= NAT44_SES_O2I_SYN;
- if (tcp_flags & TCP_FLAG_FIN)
- {
- ses->o2i_fin_seq = clib_net_to_host_u32 (tcp_seq_number);
- ses->state |= NAT44_SES_O2I_FIN;
- }
- if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_FIN))
- {
- if (clib_net_to_host_u32 (tcp_ack_number) > ses->i2o_fin_seq)
- ses->state |= NAT44_SES_I2O_FIN_ACK;
- if (nat44_is_ses_closed (ses))
- { // if session is now closed, save the timestamp
- ses->tcp_closed_timestamp = now + sm->timeouts.tcp.transitory;
- ses->last_lru_update = now;
- }
- }
- // move the session to proper LRU
- if (ses->state)
- {
- ses->lru_head_index = tsm->tcp_trans_lru_head_index;
- }
- else
- {
- ses->lru_head_index = tsm->tcp_estab_lru_head_index;
- }
- clib_dlist_remove (tsm->lru_pool, ses->lru_index);
- clib_dlist_addtail (tsm->lru_pool, ses->lru_head_index, ses->lru_index);
+ return nat44_set_tcp_session_state (sm, now, ses, tcp_flags, thread_index,
+ NAT44_ED_DIR_O2I);
}
always_inline void
nat44_session_update_counters (snat_session_t *s, f64 now, uword bytes,
u32 thread_index)
{
+ // regardless of TCP state, reset the timer if data packet is seen.
s->last_heard = now;
s->total_pkts++;
s->total_bytes += bytes;
@@ -868,6 +834,19 @@ nat44_session_update_lru (snat_main_t *sm, snat_session_t *s, u32 thread_index)
}
}
+static_always_inline int
+nat44_ed_is_unk_proto (u8 proto)
+{
+ static const int lookup_table[256] = {
+ [IP_PROTOCOL_TCP] = 1,
+ [IP_PROTOCOL_UDP] = 1,
+ [IP_PROTOCOL_ICMP] = 1,
+ [IP_PROTOCOL_ICMP6] = 1,
+ };
+
+ return 1 - lookup_table[proto];
+}
+
#endif /* __included_nat44_ed_inlines_h__ */
/*
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_out2in.c b/src/plugins/nat/nat44-ed/nat44_ed_out2in.c
index 186d1d6c004..fe4a41c5e08 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_out2in.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_out2in.c
@@ -25,7 +25,6 @@
#include <vnet/udp/udp_local.h>
#include <vppinfra/error.h>
-#include <nat/lib/nat_syslog.h>
#include <nat/lib/ipfix_logging.h>
#include <nat/nat44-ed/nat44_ed.h>
@@ -42,7 +41,6 @@ typedef enum
NAT_ED_SP_REASON_NO_REASON,
NAT_ED_SP_REASON_LOOKUP_FAILED,
NAT_ED_SP_REASON_VRF_EXPIRED,
- NAT_ED_SP_TCP_CLOSED,
NAT_ED_SP_SESS_EXPIRED,
} nat_slow_path_reason_e;
@@ -58,6 +56,7 @@ typedef struct
u8 is_slow_path;
u8 translation_via_i2of;
u8 lookup_skipped;
+ u8 tcp_state;
nat_slow_path_reason_e slow_path_reason;
} nat44_ed_out2in_trace_t;
@@ -73,8 +72,6 @@ format_slow_path_reason (u8 *s, va_list *args)
return format (s, "slow path because lookup failed");
case NAT_ED_SP_REASON_VRF_EXPIRED:
return format (s, "slow path because vrf expired");
- case NAT_ED_SP_TCP_CLOSED:
- return format (s, "slow path because tcp closed");
case NAT_ED_SP_SESS_EXPIRED:
return format (s, "slow path because session expired");
}
@@ -108,14 +105,19 @@ format_nat44_ed_out2in_trace (u8 * s, va_list * args)
{
if (t->lookup_skipped)
{
- s = format (s, "\n lookup skipped - cached session index used");
+ s = format (s, "\n lookup skipped - cached session index used");
}
else
{
s = format (s, "\n search key %U", format_ed_session_kvp,
&t->search_key);
}
- s = format (s, "\n %U", format_slow_path_reason, t->slow_path_reason);
+ s = format (s, "\n %U", format_slow_path_reason, t->slow_path_reason);
+ }
+ if (IP_PROTOCOL_TCP == t->i2of.match.proto)
+ {
+ s = format (s, "\n TCP state: %U", format_nat44_ed_tcp_state,
+ t->tcp_state);
}
return s;
@@ -123,12 +125,12 @@ format_nat44_ed_out2in_trace (u8 * s, va_list * args)
static int
next_src_nat (snat_main_t *sm, ip4_header_t *ip, u16 src_port, u16 dst_port,
- u32 thread_index, u32 rx_fib_index)
+ u32 rx_fib_index)
{
clib_bihash_kv_16_8_t kv, value;
- init_ed_k (&kv, ip->src_address, src_port, ip->dst_address, dst_port,
- rx_fib_index, ip->protocol);
+ init_ed_k (&kv, ip->src_address.as_u32, src_port, ip->dst_address.as_u32,
+ dst_port, rx_fib_index, ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
return 1;
@@ -142,8 +144,8 @@ static void create_bypass_for_fwd (snat_main_t *sm, vlib_buffer_t *b,
static snat_session_t *create_session_for_static_mapping_ed (
snat_main_t *sm, vlib_buffer_t *b, ip4_address_t i2o_addr, u16 i2o_port,
u32 i2o_fib_index, ip4_address_t o2i_addr, u16 o2i_port, u32 o2i_fib_index,
- nat_protocol_t nat_proto, vlib_node_runtime_t *node, u32 rx_fib_index,
- u32 thread_index, twice_nat_type_t twice_nat, lb_nat_type_t lb_nat, f64 now,
+ ip_protocol_t proto, vlib_node_runtime_t *node, u32 thread_index,
+ twice_nat_type_t twice_nat, lb_nat_type_t lb_nat, f64 now,
snat_static_mapping_t *mapping);
static inline u32
@@ -180,10 +182,10 @@ icmp_out2in_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
goto out;
}
- if (snat_static_mapping_match (
- vm, sm, ip->dst_address, lookup_sport, rx_fib_index,
- ip_proto_to_nat_proto (ip->protocol), &sm_addr, &sm_port,
- &sm_fib_index, 1, &is_addr_only, 0, 0, 0, &identity_nat, &m))
+ if (snat_static_mapping_match (vm, ip->dst_address, lookup_sport,
+ rx_fib_index, ip->protocol, &sm_addr,
+ &sm_port, &sm_fib_index, 1, &is_addr_only, 0,
+ 0, 0, &identity_nat, &m))
{
// static mapping not matched
if (!sm->forwarding_enabled)
@@ -198,8 +200,7 @@ icmp_out2in_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
}
else
{
- if (next_src_nat (sm, ip, lookup_sport, lookup_dport, thread_index,
- rx_fib_index))
+ if (next_src_nat (sm, ip, lookup_sport, lookup_dport, rx_fib_index))
{
next = NAT_NEXT_IN2OUT_ED_FAST_PATH;
}
@@ -230,8 +231,8 @@ icmp_out2in_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
/* Create session initiated by host from external network */
s = create_session_for_static_mapping_ed (
sm, b, sm_addr, sm_port, sm_fib_index, ip->dst_address, lookup_sport,
- rx_fib_index, ip_proto_to_nat_proto (lookup_protocol), node, rx_fib_index,
- thread_index, 0, 0, vlib_time_now (vm), m);
+ rx_fib_index, lookup_protocol, node, thread_index, 0, 0,
+ vlib_time_now (vm), m);
if (!s)
next = NAT_NEXT_DROP;
@@ -266,44 +267,30 @@ out:
return next;
}
-// allocate exact address based on preference
static_always_inline int
-nat_alloc_addr_and_port_exact (snat_address_t * a,
- u32 thread_index,
- nat_protocol_t proto,
- ip4_address_t * addr,
- u16 * port,
- u16 port_per_thread, u32 snat_thread_index)
+nat44_ed_alloc_i2o_port (snat_main_t *sm, snat_address_t *a, snat_session_t *s,
+ ip4_address_t i2o_addr, u16 i2o_port,
+ u32 i2o_fib_index, ip_protocol_t proto,
+ u32 thread_index, u32 snat_thread_index,
+ ip4_address_t *outside_addr, u16 *outside_port)
{
- snat_main_t *sm = &snat_main;
u32 portnum;
- switch (proto)
+ for (int i = 0; i < ED_PORT_ALLOC_ATTEMPTS; ++i)
{
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
- { \
- while (1) \
- { \
- portnum = (port_per_thread * \
- snat_thread_index) + \
- snat_random_port(0, port_per_thread - 1) + 1024; \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- --a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16(portnum); \
- return 0; \
- } \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return 1;
+ portnum = (sm->port_per_thread * snat_thread_index) +
+ snat_random_port (0, sm->port_per_thread - 1) +
+ ED_USER_PORT_OFFSET;
+ portnum = clib_host_to_net_u16 (portnum);
+ nat_6t_i2o_flow_init (sm, thread_index, s, i2o_addr, i2o_port, a->addr,
+ portnum, i2o_fib_index, proto);
+ if (!nat_ed_ses_i2o_flow_hash_add_del (sm, thread_index, s,
+ 1 /* is_add */))
+ {
+ *outside_addr = a->addr;
+ *outside_port = portnum;
+ return 0;
+ }
}
/* Totally out of translations to use... */
@@ -312,80 +299,56 @@ nat_alloc_addr_and_port_exact (snat_address_t * a,
}
static_always_inline int
-nat44_ed_alloc_outside_addr_and_port (snat_address_t *addresses, u32 fib_index,
- u32 thread_index, nat_protocol_t proto,
- ip4_address_t *addr, u16 *port,
- u16 port_per_thread,
- u32 snat_thread_index)
+nat44_ed_alloc_i2o_addr_and_port (snat_main_t *sm, snat_address_t *addresses,
+ snat_session_t *s, ip4_address_t i2o_addr,
+ u16 i2o_port, u32 i2o_fib_index,
+ ip_protocol_t proto, u32 thread_index,
+ u32 snat_thread_index,
+ ip4_address_t *outside_addr,
+ u16 *outside_port)
{
- snat_main_t *sm = &snat_main;
snat_address_t *a, *ga = 0;
- u32 portnum;
int i;
- for (i = 0; i < vec_len (addresses); i++)
+ if (vec_len (addresses) > 0)
{
- a = addresses + i;
- switch (proto)
+ int s_addr_offset = i2o_addr.as_u32 % vec_len (addresses);
+
+ for (i = s_addr_offset; i < vec_len (addresses); ++i)
{
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
- { \
- if (a->fib_index == fib_index) \
- { \
- while (1) \
- { \
- portnum = (port_per_thread * snat_thread_index) + \
- snat_random_port (0, port_per_thread - 1) + 1024; \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- --a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16 (portnum); \
- return 0; \
- } \
- } \
- else if (a->fib_index == ~0) \
- { \
- ga = a; \
- } \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return 1;
+ a = addresses + i;
+ if (a->fib_index == i2o_fib_index)
+ {
+ return nat44_ed_alloc_i2o_port (
+ sm, a, s, i2o_addr, i2o_port, i2o_fib_index, proto,
+ thread_index, snat_thread_index, outside_addr, outside_port);
+ }
+ else if (a->fib_index == ~0)
+ {
+ ga = a;
+ }
}
- }
- if (ga)
- {
- a = ga;
- switch (proto)
+ for (i = 0; i < s_addr_offset; ++i)
{
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- while (1) \
- { \
- portnum = (port_per_thread * snat_thread_index) + \
- snat_random_port (0, port_per_thread - 1) + 1024; \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- ++a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16 (portnum); \
- return 0; \
- }
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return 1;
+ a = addresses + i;
+ if (a->fib_index == i2o_fib_index)
+ {
+ return nat44_ed_alloc_i2o_port (
+ sm, a, s, i2o_addr, i2o_port, i2o_fib_index, proto,
+ thread_index, snat_thread_index, outside_addr, outside_port);
+ }
+ else if (a->fib_index == ~0)
+ {
+ ga = a;
+ }
+ }
+
+ if (ga)
+ {
+ return nat44_ed_alloc_i2o_port (
+ sm, a, s, i2o_addr, i2o_port, i2o_fib_index, proto, thread_index,
+ snat_thread_index, outside_addr, outside_port);
}
}
@@ -398,23 +361,23 @@ static snat_session_t *
create_session_for_static_mapping_ed (
snat_main_t *sm, vlib_buffer_t *b, ip4_address_t i2o_addr, u16 i2o_port,
u32 i2o_fib_index, ip4_address_t o2i_addr, u16 o2i_port, u32 o2i_fib_index,
- nat_protocol_t nat_proto, vlib_node_runtime_t *node, u32 rx_fib_index,
- u32 thread_index, twice_nat_type_t twice_nat, lb_nat_type_t lb_nat, f64 now,
+ ip_protocol_t proto, vlib_node_runtime_t *node, u32 thread_index,
+ twice_nat_type_t twice_nat, lb_nat_type_t lb_nat, f64 now,
snat_static_mapping_t *mapping)
{
snat_session_t *s;
ip4_header_t *ip;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- if (PREDICT_FALSE
- (nat44_ed_maximum_sessions_exceeded (sm, rx_fib_index, thread_index)))
+ if (PREDICT_FALSE (
+ nat44_ed_maximum_sessions_exceeded (sm, o2i_fib_index, thread_index)))
{
b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED];
nat_elog_notice (sm, "maximum sessions exceeded");
return 0;
}
- s = nat_ed_session_alloc (sm, thread_index, now, nat_proto);
+ s = nat_ed_session_alloc (sm, thread_index, now, proto);
if (!s)
{
b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED];
@@ -426,22 +389,21 @@ create_session_for_static_mapping_ed (
s->ext_host_addr.as_u32 = ip->src_address.as_u32;
s->ext_host_port =
- nat_proto == NAT_PROTOCOL_ICMP ? 0 : vnet_buffer (b)->ip.reass.l4_src_port;
+ proto == IP_PROTOCOL_ICMP ? 0 : vnet_buffer (b)->ip.reass.l4_src_port;
s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
if (lb_nat)
s->flags |= SNAT_SESSION_FLAG_LOAD_BALANCING;
if (lb_nat == AFFINITY_LB_NAT)
s->flags |= SNAT_SESSION_FLAG_AFFINITY;
- s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
s->out2in.addr = o2i_addr;
s->out2in.port = o2i_port;
s->out2in.fib_index = o2i_fib_index;
s->in2out.addr = i2o_addr;
s->in2out.port = i2o_port;
s->in2out.fib_index = i2o_fib_index;
- s->nat_proto = nat_proto;
+ s->proto = proto;
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_o2i_flow_init (sm, thread_index, s, s->ext_host_addr, o2i_port,
o2i_addr, o2i_port, o2i_fib_index, ip->protocol);
@@ -487,33 +449,23 @@ create_session_for_static_mapping_ed (
if (filter)
{
- rc = nat_alloc_addr_and_port_exact (filter,
- thread_index,
- nat_proto,
- &s->ext_host_nat_addr,
- &s->ext_host_nat_port,
- sm->port_per_thread,
- tsm->snat_thread_index);
+ rc = nat44_ed_alloc_i2o_port (
+ sm, filter, s, i2o_addr, i2o_port, i2o_fib_index, proto,
+ thread_index, tsm->snat_thread_index, &s->ext_host_nat_addr,
+ &s->ext_host_nat_port);
s->flags |= SNAT_SESSION_FLAG_EXACT_ADDRESS;
}
else
{
- rc = nat44_ed_alloc_outside_addr_and_port (
- sm->twice_nat_addresses, 0, thread_index, nat_proto,
- &s->ext_host_nat_addr, &s->ext_host_nat_port, sm->port_per_thread,
- tsm->snat_thread_index);
+ rc = nat44_ed_alloc_i2o_addr_and_port (
+ sm, sm->twice_nat_addresses, s, i2o_addr, i2o_port, i2o_fib_index,
+ proto, thread_index, tsm->snat_thread_index, &s->ext_host_nat_addr,
+ &s->ext_host_nat_port);
}
if (rc)
{
b->error = node->errors[NAT_OUT2IN_ED_ERROR_OUT_OF_PORTS];
- if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 0))
- {
- nat_elog_warn (sm, "out2in flow hash del failed");
- }
- snat_free_outside_address_and_port (
- sm->twice_nat_addresses, thread_index, &s->ext_host_nat_addr,
- s->ext_host_nat_port, s->nat_proto);
nat_ed_session_delete (sm, s, thread_index, 1);
return 0;
}
@@ -521,7 +473,7 @@ create_session_for_static_mapping_ed (
s->flags |= SNAT_SESSION_FLAG_TWICE_NAT;
nat_6t_flow_saddr_rewrite_set (&s->o2i, s->ext_host_nat_addr.as_u32);
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_flow_icmp_id_rewrite_set (&s->o2i, s->ext_host_nat_port);
}
@@ -532,11 +484,8 @@ create_session_for_static_mapping_ed (
nat_6t_l3_l4_csum_calc (&s->o2i);
- nat_6t_i2o_flow_init (sm, thread_index, s, i2o_addr, i2o_port,
- s->ext_host_nat_addr, s->ext_host_nat_port,
- i2o_fib_index, ip->protocol);
nat_6t_flow_daddr_rewrite_set (&s->i2o, s->ext_host_addr.as_u32);
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_flow_icmp_id_rewrite_set (&s->i2o, s->ext_host_port);
}
@@ -544,10 +493,21 @@ create_session_for_static_mapping_ed (
{
nat_6t_flow_dport_rewrite_set (&s->i2o, s->ext_host_port);
}
+
+ nat_6t_flow_saddr_rewrite_set (&s->i2o, o2i_addr.as_u32);
+ if (IP_PROTOCOL_ICMP == proto)
+ {
+ nat_6t_flow_icmp_id_rewrite_set (&s->i2o, o2i_port);
+ }
+ else
+ {
+ nat_6t_flow_sport_rewrite_set (&s->i2o, o2i_port);
+ }
+ nat_6t_l3_l4_csum_calc (&s->i2o);
}
else
{
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_i2o_flow_init (sm, thread_index, s, i2o_addr, i2o_port,
s->ext_host_addr, i2o_port, i2o_fib_index,
@@ -559,10 +519,9 @@ create_session_for_static_mapping_ed (
s->ext_host_addr, s->ext_host_port,
i2o_fib_index, ip->protocol);
}
- }
nat_6t_flow_saddr_rewrite_set (&s->i2o, o2i_addr.as_u32);
- if (NAT_PROTOCOL_ICMP == nat_proto)
+ if (IP_PROTOCOL_ICMP == proto)
{
nat_6t_flow_icmp_id_rewrite_set (&s->i2o, o2i_port);
}
@@ -581,19 +540,16 @@ create_session_for_static_mapping_ed (
nat_ed_session_delete (sm, s, thread_index, 1);
return 0;
}
-
- nat_ipfix_logging_nat44_ses_create (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port, s->in2out.fib_index);
+ }
+ nat_ipfix_logging_nat44_ses_create (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32, s->proto,
+ s->in2out.port, s->out2in.port, s->in2out.fib_index);
nat_syslog_nat44_sadd (0, s->in2out.fib_index, &s->in2out.addr,
s->in2out.port, &s->ext_host_nat_addr,
s->ext_host_nat_port, &s->out2in.addr, s->out2in.port,
- &s->ext_host_addr, s->ext_host_port, s->nat_proto,
- is_twice_nat_session (s));
+ &s->ext_host_addr, s->ext_host_port, s->proto,
+ nat44_ed_is_twice_nat_session (s));
per_vrf_sessions_register_session (s, thread_index);
@@ -636,8 +592,8 @@ create_bypass_for_fwd (snat_main_t *sm, vlib_buffer_t *b, snat_session_t *s,
lookup_protocol = ip->protocol;
}
- init_ed_k (&kv, lookup_saddr, lookup_sport, lookup_daddr, lookup_dport,
- rx_fib_index, lookup_protocol);
+ init_ed_k (&kv, lookup_saddr.as_u32, lookup_sport, lookup_daddr.as_u32,
+ lookup_dport, rx_fib_index, lookup_protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
{
@@ -654,8 +610,6 @@ create_bypass_for_fwd (snat_main_t *sm, vlib_buffer_t *b, snat_session_t *s,
}
else
{
- u32 proto;
-
if (PREDICT_FALSE
(nat44_ed_maximum_sessions_exceeded
(sm, rx_fib_index, thread_index)))
@@ -668,19 +622,12 @@ create_bypass_for_fwd (snat_main_t *sm, vlib_buffer_t *b, snat_session_t *s,
return;
}
- proto = ip_proto_to_nat_proto (ip->protocol);
-
s->ext_host_addr = ip->src_address;
s->ext_host_port = lookup_dport;
s->flags |= SNAT_SESSION_FLAG_FWD_BYPASS;
s->out2in.addr = ip->dst_address;
s->out2in.port = lookup_sport;
- s->nat_proto = proto;
- if (proto == NAT_PROTOCOL_OTHER)
- {
- s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
- s->out2in.port = ip->protocol;
- }
+ s->proto = ip->protocol;
s->out2in.fib_index = rx_fib_index;
s->in2out.addr = s->out2in.addr;
s->in2out.port = s->out2in.port;
@@ -702,10 +649,9 @@ create_bypass_for_fwd (snat_main_t *sm, vlib_buffer_t *b, snat_session_t *s,
if (ip->protocol == IP_PROTOCOL_TCP)
{
- tcp_header_t *tcp = ip4_next_header (ip);
- nat44_set_tcp_session_state_o2i (sm, now, s, tcp->flags,
- tcp->ack_number, tcp->seq_number,
- thread_index);
+ nat44_set_tcp_session_state_o2i (
+ sm, now, s, vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags,
+ thread_index);
}
/* Accounting */
@@ -721,7 +667,6 @@ nat44_ed_out2in_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
vlib_main_t *vm,
vlib_node_runtime_t *node)
{
- clib_bihash_kv_8_8_t kv, value;
snat_static_mapping_t *m;
snat_session_t *s;
@@ -733,15 +678,13 @@ nat44_ed_out2in_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
return 0;
}
- init_nat_k (&kv, ip->dst_address, 0, 0, 0);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, ip->dst_address, 0, 0, ip->protocol);
+ if (!m)
{
b->error = node->errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
return 0;
}
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
/* Create a new session */
s = nat_ed_session_alloc (sm, thread_index, now, ip->protocol);
if (!s)
@@ -752,9 +695,7 @@ nat44_ed_out2in_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b,
}
s->ext_host_addr.as_u32 = ip->src_address.as_u32;
- s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
- s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
s->out2in.addr.as_u32 = ip->dst_address.as_u32;
s->out2in.fib_index = rx_fib_index;
s->in2out.addr.as_u32 = m->local_addr.as_u32;
@@ -816,10 +757,10 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
{
vlib_buffer_t *b0;
u32 sw_if_index0, rx_fib_index0;
- nat_protocol_t proto0;
+ ip_protocol_t proto0;
ip4_header_t *ip0;
snat_session_t *s0 = 0;
- clib_bihash_kv_16_8_t kv0, value0;
+ clib_bihash_kv_16_8_t kv0 = {}, value0;
nat_translation_error_e translation_error = NAT_ED_TRNSL_ERR_SUCCESS;
nat_slow_path_reason_e slow_path_reason = NAT_ED_SP_REASON_NO_REASON;
nat_6t_flow_t *f = 0;
@@ -865,9 +806,9 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
goto trace0;
}
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip0->protocol;
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == IP_PROTOCOL_ICMP))
{
if (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags !=
ICMP4_echo_request &&
@@ -916,8 +857,8 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
s0 = NULL;
}
- init_ed_k (&kv0, lookup.saddr, lookup.sport, lookup.daddr, lookup.dport,
- lookup.fib_index, lookup.proto);
+ init_ed_k (&kv0, lookup.saddr.as_u32, lookup.sport, lookup.daddr.as_u32,
+ lookup.dport, lookup.fib_index, lookup.proto);
// lookup flow
if (clib_bihash_search_16_8 (&sm->flow_hash, &kv0, &value0))
@@ -938,30 +879,14 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
if (PREDICT_FALSE (per_vrf_sessions_is_expired (s0, thread_index)))
{
// session is closed, go slow path
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
slow_path_reason = NAT_ED_SP_REASON_VRF_EXPIRED;
next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
goto trace0;
}
- if (s0->tcp_closed_timestamp)
- {
- if (now >= s0->tcp_closed_timestamp)
- {
- // session is closed, go slow path, freed in slow path
- slow_path_reason = NAT_ED_SP_TCP_CLOSED;
- next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- }
- else
- {
- // session in transitory timeout, drop
- b0->error = node->errors[NAT_OUT2IN_ED_ERROR_TCP_CLOSED];
- next[0] = NAT_NEXT_DROP;
- }
- goto trace0;
- }
-
// drop if session expired
u64 sess_timeout_time;
sess_timeout_time =
@@ -969,8 +894,9 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
if (now >= sess_timeout_time)
{
// session is closed, go slow path
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
slow_path_reason = NAT_ED_SP_SESS_EXPIRED;
next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
goto trace0;
@@ -992,7 +918,7 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
* be able to use dhcp client on the outside interface
*/
if (PREDICT_FALSE (
- proto0 == NAT_PROTOCOL_UDP &&
+ proto0 == IP_PROTOCOL_UDP &&
(vnet_buffer (b0)->ip.reass.l4_dst_port ==
clib_host_to_net_u16 (UDP_DST_PORT_dhcp_to_client))))
{
@@ -1017,8 +943,9 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
// create_bypass_for_fwd (sm, b0, s0, ip0, rx_fib_index0,
// thread_index);
translation_error = NAT_ED_TRNSL_ERR_FLOW_MISMATCH;
- nat_free_session_data (sm, s0, thread_index, 0);
+ nat44_ed_free_session_data (sm, s0, thread_index, 0);
nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = 0;
next[0] = NAT_NEXT_DROP;
b0->error = node->errors[NAT_OUT2IN_ED_ERROR_TRNSL_FAILED];
goto trace0;
@@ -1037,27 +964,23 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
switch (proto0)
{
- case NAT_PROTOCOL_TCP:
+ case IP_PROTOCOL_TCP:
vlib_increment_simple_counter (&sm->counters.fastpath.out2in.tcp,
thread_index, sw_if_index0, 1);
nat44_set_tcp_session_state_o2i (sm, now, s0,
vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags,
- vnet_buffer (b0)->ip.
- reass.tcp_ack_number,
- vnet_buffer (b0)->ip.
- reass.tcp_seq_number,
thread_index);
break;
- case NAT_PROTOCOL_UDP:
+ case IP_PROTOCOL_UDP:
vlib_increment_simple_counter (&sm->counters.fastpath.out2in.udp,
thread_index, sw_if_index0, 1);
break;
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
vlib_increment_simple_counter (&sm->counters.fastpath.out2in.icmp,
thread_index, sw_if_index0, 1);
break;
- case NAT_PROTOCOL_OTHER:
+ default:
vlib_increment_simple_counter (&sm->counters.fastpath.out2in.other,
thread_index, sw_if_index0, 1);
break;
@@ -1090,6 +1013,7 @@ nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm,
clib_memcpy (&t->i2of, &s0->i2o, sizeof (t->i2of));
clib_memcpy (&t->o2if, &s0->o2i, sizeof (t->o2if));
t->translation_via_i2of = (&s0->i2o == f);
+ t->tcp_state = s0->tcp_state;
}
else
{
@@ -1135,12 +1059,12 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
{
vlib_buffer_t *b0;
u32 sw_if_index0, rx_fib_index0;
- nat_protocol_t proto0;
+ ip_protocol_t proto0;
ip4_header_t *ip0;
udp_header_t *udp0;
icmp46_header_t *icmp0;
snat_session_t *s0 = 0;
- clib_bihash_kv_16_8_t kv0, value0;
+ clib_bihash_kv_16_8_t kv0 = {}, value0;
lb_nat_type_t lb_nat0;
twice_nat_type_t twice_nat0;
u8 identity_nat0;
@@ -1171,9 +1095,9 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
udp0 = ip4_next_header (ip0);
icmp0 = (icmp46_header_t *) udp0;
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip0->protocol;
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
+ if (PREDICT_FALSE (nat44_ed_is_unk_proto (proto0)))
{
s0 = nat44_ed_out2in_slowpath_unknown_proto (
sm, b0, ip0, rx_fib_index0, thread_index, now, vm, node);
@@ -1198,7 +1122,7 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
goto trace0;
}
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == IP_PROTOCOL_ICMP))
{
next[0] = icmp_out2in_ed_slow_path
(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
@@ -1215,15 +1139,19 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
goto trace0;
}
- vlib_increment_simple_counter (&sm->counters.slowpath.out2in.icmp,
- thread_index, sw_if_index0, 1);
+ if (NAT_NEXT_DROP != next[0])
+ {
+ vlib_increment_simple_counter (
+ &sm->counters.slowpath.out2in.icmp, thread_index, sw_if_index0,
+ 1);
+ }
goto trace0;
}
- init_ed_k (&kv0, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0,
- ip0->protocol);
+ init_ed_k (
+ &kv0, ip0->src_address.as_u32, vnet_buffer (b0)->ip.reass.l4_src_port,
+ ip0->dst_address.as_u32, vnet_buffer (b0)->ip.reass.l4_dst_port,
+ rx_fib_index0, ip0->protocol);
s0 = NULL;
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv0, &value0))
@@ -1232,13 +1160,6 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
s0 =
pool_elt_at_index (tsm->sessions,
ed_value_get_session_index (&value0));
-
- if (s0->tcp_closed_timestamp && now >= s0->tcp_closed_timestamp)
- {
- nat_free_session_data (sm, s0, thread_index, 0);
- nat_ed_session_delete (sm, s0, thread_index, 1);
- s0 = NULL;
- }
}
if (!s0)
@@ -1247,19 +1168,18 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
destination address and port in packet */
if (snat_static_mapping_match (
- vm, sm, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0, proto0,
- &sm_addr, &sm_port, &sm_fib_index, 1, 0, &twice_nat0, &lb_nat0,
- &ip0->src_address, &identity_nat0, &m))
+ vm, ip0->dst_address, vnet_buffer (b0)->ip.reass.l4_dst_port,
+ rx_fib_index0, proto0, &sm_addr, &sm_port, &sm_fib_index, 1, 0,
+ &twice_nat0, &lb_nat0, &ip0->src_address, &identity_nat0, &m))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
* be able to use dhcp client on the outside interface
*/
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_UDP
- && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
- clib_host_to_net_u16
- (UDP_DST_PORT_dhcp_to_client))))
+ if (PREDICT_FALSE (
+ proto0 == IP_PROTOCOL_UDP &&
+ (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16 (UDP_DST_PORT_dhcp_to_client))))
{
goto trace0;
}
@@ -1272,10 +1192,9 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
}
else
{
- if (next_src_nat
- (sm, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- thread_index, rx_fib_index0))
+ if (next_src_nat (
+ sm, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0))
{
next[0] = NAT_NEXT_IN2OUT_ED_FAST_PATH;
}
@@ -1291,9 +1210,9 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
if (PREDICT_FALSE (identity_nat0))
goto trace0;
- if ((proto0 == NAT_PROTOCOL_TCP)
- && !tcp_flags_is_init (vnet_buffer (b0)->ip.
- reass.icmp_type_or_tcp_flags))
+ if ((proto0 == IP_PROTOCOL_TCP) &&
+ !tcp_flags_is_init (
+ vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags))
{
b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN];
next[0] = NAT_NEXT_DROP;
@@ -1301,16 +1220,10 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
}
/* Create session initiated by host from external network */
- s0 = create_session_for_static_mapping_ed (sm, b0,
- sm_addr, sm_port,
- sm_fib_index,
- ip0->dst_address,
- vnet_buffer (b0)->
- ip.reass.l4_dst_port,
- rx_fib_index0, proto0,
- node, rx_fib_index0,
- thread_index, twice_nat0,
- lb_nat0, now, m);
+ s0 = create_session_for_static_mapping_ed (
+ sm, b0, sm_addr, sm_port, sm_fib_index, ip0->dst_address,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0, proto0,
+ node, thread_index, twice_nat0, lb_nat0, now, m);
if (!s0)
{
next[0] = NAT_NEXT_DROP;
@@ -1326,17 +1239,13 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
goto trace0;
}
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == IP_PROTOCOL_TCP))
{
vlib_increment_simple_counter (&sm->counters.slowpath.out2in.tcp,
thread_index, sw_if_index0, 1);
nat44_set_tcp_session_state_o2i (sm, now, s0,
vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags,
- vnet_buffer (b0)->ip.
- reass.tcp_ack_number,
- vnet_buffer (b0)->ip.
- reass.tcp_seq_number,
thread_index);
}
else
@@ -1369,6 +1278,7 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm,
t->session_index = s0 - tsm->sessions;
clib_memcpy (&t->i2of, &s0->i2o, sizeof (t->i2of));
clib_memcpy (&t->o2if, &s0->o2i, sizeof (t->o2if));
+ t->tcp_state = s0->tcp_state;
}
else
{
diff --git a/src/plugins/nat/nat44-ed/tcp_conn_track.rst b/src/plugins/nat/nat44-ed/tcp_conn_track.rst
new file mode 100644
index 00000000000..faf0dec8b06
--- /dev/null
+++ b/src/plugins/nat/nat44-ed/tcp_conn_track.rst
@@ -0,0 +1,65 @@
+NAT44ED TCP connection tracking
+===============================
+
+TCP connection tracking in endpoint-dependent NAT is based on RFC 7857
+and RFC 6146, which RFC 7857 references.
+
+See RFC 7857 for the original graph - our graph is slightly different,
+allowing creation of new session, while an old session is in transitory
+timeout after seeing FIN packets from both sides:
+
+After discussion on vpp-dev and with Andrew Yourtschenko we agreed that
+it's friendly behaviour to allow creating a new session while the old
+one is closed and in transitory timeout. The alternative means VPP is
+insisting that a 5-tuple connection cannot be created while an old one
+is finished and timing out. There is no apparent reason why our change
+would break anything and we agreed that it could only help users.
+
+::
+
+
+ +------------transitory timeout----------------+
+ | |
+ | +-------------+ |
+ | session created---->+ CLOSED | |
+ | +-------------+ |
+ | | | |
++-----+ | SYN SYN |
+| v v IN2OUT OUT2IN |
+| +->session removed | | |
+| | ^ ^ ^ ^ ^ v v |
+| | | | | | | +-------+ +-------+ |
+| | | | | | +----transitory timeout---+SYN_I2O| |SYN_O2I+--+
+| | | | | | +---------+ |-------| |-------|
+| | | | | +-transitory---+RST_TRANS| | |
+| | | | | timeout +---------+ SYN SYN
+| | | | | | ^ OUT2IN IN2OUT
+| | | | | | | | |
+| | | | | | | v v
+| | | | | | | +-----------+
+| | | | | | +--RST----+ESTABLISHED+<-SYN IN2OUT-+
+| | | | | | +-----------+ |
+| | | | | +---data pkt-----^ | | | ^ |
+| | | | | | | | | |
+| | | | +----established timeout---------------+ | | | |
+| | | | | | | |
+| | | | +-----FIN IN2OUT---------+ | | |
+| | | | v | | |
+| | | | +-------+ +--FIN OUT2IN----+ | |
+| | | +--established---+FIN_I2O| | | |
+| | | timeout +-------+ v +-SYN OUT2IN-+ |
+| | | | +-------+ | |
+| | +----established-------------+FIN_O2I| +--------------+ |
+| | timeout | +-------+ |REOPEN_SYN_I2O| +--------------+
+| | | | +--------------+ |REOPEN_SYN_O2I|
+| | FIN FIN ^ | +--------------+
+| | OUT2IN IN2OUT | | ^ |
+| | | | | | | |
+| | v v | | | |
+| | +-------------+ | | | |
+| +--transitory timeout---+ FIN_TRANS +-SYN IN2OUT-+ | | |
+| +-------------+ | | |
+| | | | |
+| +--------SYN OUT2IN----|-----------+ |
+| v |
++------------------transitory timeout-------------------+<-------------+