From 0e6f4d6af4191340a5f542c9eeb0f34dda32e745 Mon Sep 17 00:00:00 2001 From: John Lo Date: Fri, 13 Jul 2018 17:29:58 -0400 Subject: Improve IP4 ARP and IP6 ND Events Notification 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 --- src/vnet/ip/ip6_neighbor.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'src/vnet/ip/ip6_neighbor.c') 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; } -- cgit 1.2.3-korg