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authorNeale Ranns <nranns@cisco.com>2017-02-18 00:03:54 -0800
committerOle Trøan <otroan@employees.org>2017-03-08 09:47:03 +0000
commit3f844d0bc900e5db40ba74724e2b61e7943682d3 (patch)
tree075cde94bd20f44411922c26c4fbd0cad949545c /src/vnet/ip
parent7eaf0e57415615b56904e0054bf0b856db6f9bc1 (diff)
Proxy ND (RFC4389 - or a sub-set thereof). This allows the 'emulation' of bridging. That is hosts in one sub-net reachable via differenet interfaces.
Introducate a new API command: ip6 nd proxy <host-address> <interface> this indicates 2 things; 1) that host <host-address> is reachable out of interface <interface>. VPP will thus install that route. 2) NS requests sent to <host-address> will be responeded to (i.e. proxied). Change-Id: I863f967fdb5097ab3b574769c70afdbfc8d5478a Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ip')
-rw-r--r--src/vnet/ip/ip.api50
-rw-r--r--src/vnet/ip/ip6.h55
-rw-r--r--src/vnet/ip/ip6_neighbor.c136
-rw-r--r--src/vnet/ip/ip6_neighbor.h42
-rw-r--r--src/vnet/ip/ip_api.c102
-rw-r--r--src/vnet/ip/lookup.c1
6 files changed, 324 insertions, 62 deletions
diff --git a/src/vnet/ip/ip.api b/src/vnet/ip/ip.api
index ff16e781c05..b5e730fcbea 100644
--- a/src/vnet/ip/ip.api
+++ b/src/vnet/ip/ip.api
@@ -294,6 +294,56 @@ define sw_interface_ip6nd_ra_prefix_reply
i32 retval;
};
+/** \brief IPv6 ND proxy config
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - The interface the host is on
+ @param address - The address of the host for which to proxy for
+ @param is_add - Adding or deleting
+*/
+define ip6nd_proxy_add_del
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u8 is_del;
+ u8 address[16];
+};
+
+/** \brief IPv6 ND proxy response
+ @param context - sender context, to match reply w/ request
+ @param retval - return code for the request
+*/
+define ip6nd_proxy_add_del_reply
+{
+ u32 context;
+ i32 retval;
+};
+
+/** \brief IPv6 ND proxy details returned after request
+ @param context - sender context, to match reply w/ request
+ @param retval - return code for the request
+*/
+define ip6nd_proxy_details
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u8 address[16];
+};
+
+/** \brief IPv6 ND proxy dump request
+ @param context - sender context, to match reply w/ request
+ @param retval - return code for the request
+ @param sw_if_index - The interface the host is on
+ @param address - The address of the host for which to proxy for
+*/
+define ip6nd_proxy_dump
+{
+ u32 client_index;
+ u32 context;
+};
+
/** \brief IPv6 interface enable / disable request
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
diff --git a/src/vnet/ip/ip6.h b/src/vnet/ip/ip6.h
index 535f24c05d1..f402b0117c0 100644
--- a/src/vnet/ip/ip6.h
+++ b/src/vnet/ip/ip6.h
@@ -217,24 +217,6 @@ extern vlib_node_registration_t ip6_discover_neighbor_node;
extern vlib_node_registration_t ip6_glean_node;
extern vlib_node_registration_t ip6_midchain_node;
-extern vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node;
-
-/* ipv6 neighbor discovery - timer/event types */
-typedef enum
-{
- ICMP6_ND_EVENT_INIT,
-} ip6_icmp_neighbor_discovery_event_type_t;
-
-typedef union
-{
- u32 add_del_swindex;
- struct
- {
- u32 up_down_swindex;
- u32 fib_index;
- } up_down_event;
-} ip6_icmp_neighbor_discovery_event_data_t;
-
always_inline uword
ip6_destination_matches_route (const ip6_main_t * im,
const ip6_address_t * key,
@@ -342,8 +324,6 @@ int ip6_address_compare (ip6_address_t * a1, ip6_address_t * a2);
clib_error_t *ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst,
u32 sw_if_index);
-clib_error_t *ip6_set_neighbor_limit (u32 neighbor_limit);
-
uword
ip6_udp_register_listener (vlib_main_t * vm,
u16 dst_port, u32 next_node_index);
@@ -359,19 +339,6 @@ serialize_function_t serialize_vnet_ip6_main, unserialize_vnet_ip6_main;
void ip6_ethernet_update_adjacency (vnet_main_t * vnm,
u32 sw_if_index, u32 ai);
-int
-vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t * a,
- u8 * link_layer_address,
- uword n_bytes_link_layer_address,
- int is_static);
-int
-vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t * a,
- u8 * link_layer_address,
- uword n_bytes_link_layer_address);
void
ip6_link_local_address_from_ethernet_mac_address (ip6_address_t * ip,
@@ -384,22 +351,6 @@ ip6_ethernet_mac_address_from_link_local_address (u8 * mac,
int vnet_set_ip6_flow_hash (u32 table_id,
flow_hash_config_t flow_hash_config);
-int
-ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
- u8 suppress, u8 managed, u8 other,
- u8 ll_option, u8 send_unicast, u8 cease,
- u8 use_lifetime, u32 lifetime,
- u32 initial_count, u32 initial_interval,
- u32 max_interval, u32 min_interval, u8 is_no);
-
-int
-ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
- ip6_address_t * prefix_addr, u8 prefix_len,
- u8 use_default, u32 val_lifetime, u32 pref_lifetime,
- u8 no_advertise, u8 off_link, u8 no_autoconfig,
- u8 no_onlink, u8 is_no);
-
-
clib_error_t *enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
clib_error_t *disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
@@ -410,12 +361,6 @@ clib_error_t *set_ip6_link_local_address (vlib_main_t * vm,
u32 sw_if_index,
ip6_address_t * address);
-void vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
- void *address_arg,
- uword node_index,
- uword type_opaque,
- uword data);
-
int vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
void *data_callback,
u32 pid,
diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index 43d68cd18bb..715891b8100 100644
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -197,6 +197,22 @@ typedef struct
} ip6_neighbor_main_t;
+/* ipv6 neighbor discovery - timer/event types */
+typedef enum
+{
+ ICMP6_ND_EVENT_INIT,
+} ip6_icmp_neighbor_discovery_event_type_t;
+
+typedef union
+{
+ u32 add_del_swindex;
+ struct
+ {
+ u32 up_down_swindex;
+ u32 fib_index;
+ } up_down_event;
+} ip6_icmp_neighbor_discovery_event_data_t;
+
static ip6_neighbor_main_t ip6_neighbor_main;
static ip6_address_t ip6a_zero; /* ip6 address 0 */
@@ -312,7 +328,7 @@ static void ip6_neighbor_set_unset_rpc_callback
static void set_unset_ip6_neighbor_rpc
(vlib_main_t * vm,
u32 sw_if_index,
- ip6_address_t * a, u8 * link_layer_addreess, int is_add, int is_static)
+ ip6_address_t * a, u8 * link_layer_address, int is_add, int is_static)
{
ip6_neighbor_set_unset_rpc_args_t args;
void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
@@ -321,7 +337,8 @@ static void set_unset_ip6_neighbor_rpc
args.is_add = is_add;
args.is_static = is_static;
clib_memcpy (&args.addr, a, sizeof (*a));
- clib_memcpy (args.link_layer_address, link_layer_addreess, 6);
+ if (NULL != link_layer_address)
+ clib_memcpy (args.link_layer_address, link_layer_address, 6);
vl_api_rpc_call_main_thread (ip6_neighbor_set_unset_rpc_callback,
(u8 *) & args, sizeof (args));
@@ -1028,14 +1045,35 @@ icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm,
&h0->target_address,
128);
- if (FIB_NODE_INDEX_INVALID == fei ||
- !(FIB_ENTRY_FLAG_LOCAL &
- fib_entry_get_flags_for_source (fei,
- FIB_SOURCE_INTERFACE)))
+ if (FIB_NODE_INDEX_INVALID == fei)
{
+ /* The target address is not in the FIB */
error0 =
ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
}
+ else
+ {
+ if (FIB_ENTRY_FLAG_LOCAL &
+ fib_entry_get_flags_for_source (fei,
+ FIB_SOURCE_INTERFACE))
+ {
+ /* It's an address that belongs to one of our interfaces
+ * that's good. */
+ }
+ else
+ if (fib_entry_is_sourced
+ (fei, FIB_SOURCE_IP6_ND_PROXY))
+ {
+ /* The address was added by IPv6 Proxy ND config.
+ * We should only respond to these if the NS arrived on
+ * the link that has a matching covering prefix */
+ }
+ else
+ {
+ error0 =
+ ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
+ }
+ }
}
}
@@ -4021,6 +4059,92 @@ vnet_ip6_nd_term (vlib_main_t * vm,
}
+int
+ip6_neighbor_proxy_add_del (u32 sw_if_index, ip6_address_t * addr, u8 is_del)
+{
+ u32 fib_index;
+
+ fib_prefix_t pfx = {
+ .fp_len = 128,
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_addr = {
+ .ip6 = *addr,
+ },
+ };
+ ip46_address_t nh = {
+ .ip6 = *addr,
+ };
+
+ fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ if (~0 == fib_index)
+ return VNET_API_ERROR_NO_SUCH_FIB;
+
+ if (is_del)
+ {
+ fib_table_entry_path_remove (fib_index,
+ &pfx,
+ FIB_SOURCE_IP6_ND_PROXY,
+ FIB_PROTOCOL_IP6,
+ &nh,
+ sw_if_index,
+ ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
+ /* flush the ND cache of this address if it's there */
+ vnet_unset_ip6_ethernet_neighbor (vlib_get_main (),
+ sw_if_index, addr, NULL, 0);
+ }
+ else
+ {
+ fib_table_entry_path_add (fib_index,
+ &pfx,
+ FIB_SOURCE_IP6_ND_PROXY,
+ FIB_ENTRY_FLAG_NONE,
+ FIB_PROTOCOL_IP6,
+ &nh,
+ sw_if_index,
+ ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
+ }
+ return (0);
+}
+
+static clib_error_t *
+set_ip6_nd_proxy_cmd (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ clib_error_t *error = 0;
+ ip6_address_t addr;
+ u32 sw_if_index;
+ u8 is_del = 0;
+
+ if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
+ {
+ /* get the rest of the command */
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_ip6_address, &addr))
+ break;
+ else if (unformat (input, "delete") || unformat (input, "del"))
+ is_del = 1;
+ else
+ return (unformat_parse_error (input));
+ }
+ }
+
+ ip6_neighbor_proxy_add_del (sw_if_index, &addr, is_del);
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
+{
+ .path = "set ip6 nd proxy",
+ .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
+ .function = set_ip6_nd_proxy_cmd,
+};
+/* *INDENT-ON* */
+
void
ethernet_ndp_change_mac (u32 sw_if_index)
{
diff --git a/src/vnet/ip/ip6_neighbor.h b/src/vnet/ip/ip6_neighbor.h
index b2c9f48ae8a..3d256316a47 100644
--- a/src/vnet/ip/ip6_neighbor.h
+++ b/src/vnet/ip/ip6_neighbor.h
@@ -39,7 +39,47 @@ typedef struct
fib_node_index_t fib_entry_index;
} ip6_neighbor_t;
-ip6_neighbor_t *ip6_neighbors_entries (u32 sw_if_index);
+extern ip6_neighbor_t *ip6_neighbors_entries (u32 sw_if_index);
+
+extern int ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
+ u8 suppress, u8 managed, u8 other,
+ u8 ll_option, u8 send_unicast, u8 cease,
+ u8 use_lifetime, u32 lifetime,
+ u32 initial_count, u32 initial_interval,
+ u32 max_interval, u32 min_interval,
+ u8 is_no);
+
+extern int ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
+ ip6_address_t * prefix_addr, u8 prefix_len,
+ u8 use_default, u32 val_lifetime,
+ u32 pref_lifetime, u8 no_advertise,
+ u8 off_link, u8 no_autoconfig,
+ u8 no_onlink, u8 is_no);
+
+extern clib_error_t *ip6_set_neighbor_limit (u32 neighbor_limit);
+
+extern void vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
+ void *address_arg,
+ uword node_index,
+ uword type_opaque,
+ uword data);
+
+extern int vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
+ u32 sw_if_index,
+ ip6_address_t * a,
+ u8 * link_layer_address,
+ uword n_bytes_link_layer_address,
+ int is_static);
+
+extern int vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
+ u32 sw_if_index,
+ ip6_address_t * a,
+ u8 * link_layer_address,
+ uword
+ n_bytes_link_layer_address);
+
+extern int ip6_neighbor_proxy_add_del (u32 sw_if_index,
+ ip6_address_t * addr, u8 is_add);
#endif /* included_ip6_neighbor_h */
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c
index ab164a5f467..df9ca939c24 100644
--- a/src/vnet/ip/ip_api.c
+++ b/src/vnet/ip/ip_api.c
@@ -72,6 +72,9 @@ _(IP_ADD_DEL_ROUTE, ip_add_del_route) \
_(SET_IP_FLOW_HASH,set_ip_flow_hash) \
_(SW_INTERFACE_IP6ND_RA_CONFIG, sw_interface_ip6nd_ra_config) \
_(SW_INTERFACE_IP6ND_RA_PREFIX, sw_interface_ip6nd_ra_prefix) \
+_(IP6ND_PROXY_ADD_DEL, ip6nd_proxy_add_del) \
+_(IP6ND_PROXY_DUMP, ip6nd_proxy_dump) \
+_(IP6ND_PROXY_DETAILS, ip6nd_proxy_details) \
_(SW_INTERFACE_IP6_ENABLE_DISABLE, sw_interface_ip6_enable_disable ) \
_(SW_INTERFACE_IP6_SET_LINK_LOCAL_ADDRESS, \
sw_interface_ip6_set_link_local_address)
@@ -1400,6 +1403,105 @@ static void
}
static void
+send_ip6nd_proxy_details (unix_shared_memory_queue_t * q,
+ u32 context,
+ const ip46_address_t * addr, u32 sw_if_index)
+{
+ vl_api_ip6nd_proxy_details_t *mp;
+
+ mp = vl_msg_api_alloc (sizeof (*mp));
+ memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_IP6ND_PROXY_DETAILS);
+ mp->context = context;
+ mp->sw_if_index = htonl (sw_if_index);
+ memcpy (mp->address, addr, 16);
+
+ vl_msg_api_send_shmem (q, (u8 *) & mp);
+}
+
+static void
+vl_api_ip6nd_proxy_details_t_handler (vl_api_ip_neighbor_details_t * mp)
+{
+ clib_warning ("BUG");
+}
+
+typedef struct api_ip6nd_proxy_fib_table_walk_ctx_t_
+{
+ u32 *indices;
+} api_ip6nd_proxy_fib_table_walk_ctx_t;
+
+static int
+api_ip6nd_proxy_fib_table_walk (fib_node_index_t fei, void *arg)
+{
+ api_ip6nd_proxy_fib_table_walk_ctx_t *ctx = arg;
+
+ if (fib_entry_is_sourced (fei, FIB_SOURCE_IP6_ND_PROXY))
+ {
+ vec_add1 (ctx->indices, fei);
+ }
+
+ return (1);
+}
+
+static void
+vl_api_ip6nd_proxy_dump_t_handler (vl_api_ip6nd_proxy_dump_t * mp)
+{
+ ip6_main_t *im6 = &ip6_main;
+ fib_table_t *fib_table;
+ api_ip6nd_proxy_fib_table_walk_ctx_t ctx = {
+ .indices = NULL,
+ };
+ fib_node_index_t *feip;
+ fib_prefix_t pfx;
+ unix_shared_memory_queue_t *q;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ {
+ return;
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (fib_table, im6->fibs,
+ ({
+ fib_table_walk(fib_table->ft_index,
+ FIB_PROTOCOL_IP6,
+ api_ip6nd_proxy_fib_table_walk,
+ &ctx);
+ }));
+ /* *INDENT-ON* */
+
+ vec_sort_with_function (ctx.indices, fib_entry_cmp_for_sort);
+
+ vec_foreach (feip, ctx.indices)
+ {
+ fib_entry_get_prefix (*feip, &pfx);
+
+ send_ip6nd_proxy_details (q,
+ mp->context,
+ &pfx.fp_addr,
+ fib_entry_get_resolving_interface (*feip));
+ }
+
+ vec_free (ctx.indices);
+}
+
+static void
+vl_api_ip6nd_proxy_add_del_t_handler (vl_api_ip6nd_proxy_add_del_t * mp)
+{
+ vl_api_ip6nd_proxy_add_del_reply_t *rmp;
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv = ip6_neighbor_proxy_add_del (ntohl (mp->sw_if_index),
+ (ip6_address_t *) mp->address, mp->is_del);
+
+ BAD_SW_IF_INDEX_LABEL;
+ REPLY_MACRO (VL_API_IP6ND_PROXY_ADD_DEL_REPLY);
+}
+
+static void
vl_api_sw_interface_ip6_enable_disable_t_handler
(vl_api_sw_interface_ip6_enable_disable_t * mp)
{
diff --git a/src/vnet/ip/lookup.c b/src/vnet/ip/lookup.c
index 807b87b6037..8607fa5f200 100644
--- a/src/vnet/ip/lookup.c
+++ b/src/vnet/ip/lookup.c
@@ -49,6 +49,7 @@
#include <vnet/dpo/punt_dpo.h>
#include <vnet/dpo/receive_dpo.h>
#include <vnet/dpo/ip_null_dpo.h>
+#include <vnet/ip/ip6_neighbor.h>
/**
* @file