diff options
| author |   John Lo <loj@cisco.com> | 2018-07-13 17:29:58 -0400 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2018-07-14 15:47:08 +0000 |
| commit | 0e6f4d6af4191340a5f542c9eeb0f34dda32e745 (patch) | |
| tree | 9c67e0fb9cc5db439e5388cb0886a1b679d6dce5 /src/vnet/ip/ip6_neighbor.c | |
| parent | 29b32c2ae3e3cbe5ceaa607c8f4b31a2ac2faaa3 (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/ip6_neighbor.c')
| -rw-r--r-- | src/vnet/ip/ip6_neighbor.c | 8 |
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; } |