commit c667ffd4af4bb0a0576ceefcc29e3bb086a823c2
author Neale Ranns <nranns@cisco.com> Wed Jun 27 18:59:03 2018 -0700
committer Damjan Marion <dmarion@me.com> Fri Jun 29 09:56:16 2018 +0000
tree c4b664b55de1c826bd0f8ccb583b6c7ed7dc5d53
parent 09fdf9d074430032c27aba9e12e52440c7de2006

IP4 Router Alert option handling for IGMP

and a new ip4-options node, inserted between ip4-input and ip4-punt,
that checks for IP-router-alert option + IGMP combination and sends
the packet to the ip4-local. This is required because some IGMP
packets are sent to the group address and not the all-routers address.
All IGMP packets are sent with the router alert option.

Change-Id: I01f478d4d98ac9f806e0bcba0f6da6e4e7d26e2a
Signed-off-by: Neale Ranns <nranns@cisco.com>

src/vnet/ip/ip4_input.c

diff --git a/src/vnet/ip/ip4_input.c b/src/vnet/ip/ip4_input.c
index b476f95..1ecd43b 100644
--- a/src/vnet/ip/ip4_input.c
+++ b/src/vnet/ip/ip4_input.c
@@ -324,6 +324,7 @@
   .next_nodes = {
     [IP4_INPUT_NEXT_DROP] = "error-drop",
     [IP4_INPUT_NEXT_PUNT] = "error-punt",
+    [IP4_INPUT_NEXT_OPTIONS] = "ip4-options",
     [IP4_INPUT_NEXT_LOOKUP] = "ip4-lookup",
     [IP4_INPUT_NEXT_LOOKUP_MULTICAST] = "ip4-mfib-forward-lookup",
     [IP4_INPUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
@@ -342,6 +343,7 @@
   .next_nodes = {
     [IP4_INPUT_NEXT_DROP] = "error-drop",
     [IP4_INPUT_NEXT_PUNT] = "error-punt",
+    [IP4_INPUT_NEXT_OPTIONS] = "ip4-options",
     [IP4_INPUT_NEXT_LOOKUP] = "ip4-lookup",
     [IP4_INPUT_NEXT_LOOKUP_MULTICAST] = "ip4-mfib-forward-lookup",
     [IP4_INPUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",