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authorMatus Fabian <matfabia@cisco.com>2016-08-26 05:45:27 -0700
committerOle Trøan <otroan@employees.org>2016-10-05 11:41:51 +0000
commitdb6498848126839010eaad0bc79571a9ccbfc1bc (patch)
treeed1ad922173bc6187bc7da77b8596f7164272ed2 /plugins/snat-plugin/snat/snat.h
parentb8602b595fc89fe8b8fb00cef4820eedf225a93e (diff)
VPP-339: SNAT static mapping
1:1 NAT 1:1 NAT with ports 1:1 NAT static mapping only - add "static mapping only [connection tracking]" to snat startup config Change-Id: I37cd06a9d71d1943eb6618034d7c547c4a9348c4 Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'plugins/snat-plugin/snat/snat.h')
-rw-r--r--plugins/snat-plugin/snat/snat.h56
1 files changed, 55 insertions, 1 deletions
diff --git a/plugins/snat-plugin/snat/snat.h b/plugins/snat-plugin/snat/snat.h
index e3aa56276fb..823b8608b1a 100644
--- a/plugins/snat-plugin/snat/snat.h
+++ b/plugins/snat-plugin/snat/snat.h
@@ -55,6 +55,19 @@ typedef struct {
};
} snat_user_key_t;
+typedef struct {
+ union
+ {
+ struct
+ {
+ ip4_address_t addr;
+ u16 port;
+ u16 pad;
+ };
+ u64 as_u64;
+ };
+} snat_static_mapping_key_t;
+
typedef enum {
SNAT_PROTOCOL_UDP = 0,
@@ -63,6 +76,8 @@ typedef enum {
} snat_protocol_t;
+#define SNAT_SESSION_FLAG_STATIC_MAPPING 1
+
typedef CLIB_PACKED(struct {
snat_session_key_t out2in; /* 0-15 */
@@ -87,12 +102,12 @@ typedef CLIB_PACKED(struct {
}) snat_session_t;
-#define SNAT_SESSION_STATIC (1<<0)
typedef struct {
ip4_address_t addr;
u32 sessions_per_user_list_head_index;
u32 nsessions;
+ u32 nstaticsessions;
} snat_user_t;
typedef struct {
@@ -102,6 +117,16 @@ typedef struct {
} snat_address_t;
typedef struct {
+ ip4_address_t local_addr;
+ ip4_address_t external_addr;
+ u16 local_port;
+ u16 external_port;
+ u8 addr_only;
+ u32 vrf_id;
+ u32 fib_index;
+} snat_static_mapping_t;
+
+typedef struct {
/* Main lookup tables */
clib_bihash_8_8_t out2in;
clib_bihash_8_8_t in2out;
@@ -109,12 +134,21 @@ typedef struct {
/* Find-a-user => src address lookup */
clib_bihash_8_8_t user_hash;
+ /* 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;
+
/* User pool */
snat_user_t * users;
/* Session pool */
snat_session_t * sessions;
+ /* Static mapping pool */
+ snat_static_mapping_t * static_mappings;
+
/* Vector of outside addresses */
snat_address_t * addresses;
@@ -127,8 +161,12 @@ typedef struct {
/* ip4 feature path indices */
u32 rx_feature_in2out;
u32 rx_feature_out2in;
+ u32 rx_feature_in2out_fast;
+ u32 rx_feature_out2in_fast;
/* Config parameters */
+ u8 static_mapping_only;
+ u8 static_mapping_connection_tracking;
u32 translation_buckets;
u32 translation_memory_size;
u32 user_buckets;
@@ -136,6 +174,8 @@ typedef struct {
u32 max_translations_per_user;
u32 outside_vrf_id;
u32 outside_fib_index;
+ u32 inside_vrf_id;
+ u32 inside_fib_index;
/* API message ID base */
u16 msg_id_base;
@@ -152,6 +192,8 @@ typedef struct {
extern snat_main_t snat_main;
extern vlib_node_registration_t snat_in2out_node;
extern vlib_node_registration_t snat_out2in_node;
+extern vlib_node_registration_t snat_in2out_fast_node;
+extern vlib_node_registration_t snat_out2in_fast_node;
void snat_free_outside_address_and_port (snat_main_t * sm,
snat_session_key_t * k,
@@ -160,6 +202,12 @@ void snat_free_outside_address_and_port (snat_main_t * sm,
int snat_alloc_outside_address_and_port (snat_main_t * sm,
snat_session_key_t * k,
u32 * address_indexp);
+
+int snat_static_mapping_match (snat_main_t * sm,
+ snat_session_key_t match,
+ snat_session_key_t * mapping,
+ u8 by_external);
+
format_function_t format_snat_user;
typedef struct {
@@ -167,6 +215,12 @@ typedef struct {
u32 cached_ip4_address;
} snat_runtime_t;
+/** \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
+
/*
* 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