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authorJohn Lo <loj@cisco.com>2018-07-13 17:29:58 -0400
committerDave Barach <openvpp@barachs.net>2018-07-14 15:47:08 +0000
commit0e6f4d6af4191340a5f542c9eeb0f34dda32e745 (patch)
tree9c67e0fb9cc5db439e5388cb0886a1b679d6dce5 /src/vnet/ip
parent29b32c2ae3e3cbe5ceaa607c8f4b31a2ac2faaa3 (diff)
Improve IP4 ARP and IP6 ND Events Notificationv18.10-rc0
For L2 ARP termination, use both brodcast ARP request and reply packets to provide MAC/IP binding events. For IP4/IP6 neighbor adress resolution, send resolution events if there is an address resolution attemp with a static neighbor entry where both IP and MAC matches. This allow probe of an IP neighbor with a static entry to confirm it is responding with a reply matching that of the static entry. Change-Id: Iffb923bb5aea3f9021436735d5ca06e7b24f966f Signed-off-by: John Lo <loj@cisco.com>
Diffstat (limited to 'src/vnet/ip')
-rw-r--r--src/vnet/ip/ip6_neighbor.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index 87bda439ae5..a6227fc413a 100644
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -794,7 +794,13 @@ vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
n = pool_elt_at_index (nm->neighbor_pool, p[0]);
/* Refuse to over-write static neighbor entry. */
if (!is_static && (n->flags & IP6_NEIGHBOR_FLAG_STATIC))
- return -2;
+ {
+ /* if MAC address match, still check to send event */
+ if (0 == memcmp (n->link_layer_address,
+ link_layer_address, n_bytes_link_layer_address))
+ goto check_customers;
+ return -2;
+ }
make_new_nd_cache_entry = 0;
}