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authorNeale Ranns <nranns@cisco.com>2019-10-07 22:44:54 -0700
committerNeale Ranns <nranns@cisco.com>2019-10-09 05:20:20 +0000
commitda0e7497ca972f3219352d884b5c51e455503dbb (patch)
tree3781471bebefa8062878c59e76031cf331c9eb69
parent82fc5fd447ec2b140f1d6a8641106361176f1b80 (diff)
fib: P2P interfaces do not need specific multicast adjacencies
they can use the 'auto' adj for all traffic Type: fix Change-Id: Id2b9557683252a94badc8f9dfab5f7b2ae26f1ee Signed-off-by: Neale Ranns <nranns@cisco.com>
-rw-r--r--src/vnet/fib/fib_path.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/src/vnet/fib/fib_path.c b/src/vnet/fib/fib_path.c
index 17aa77feee8..60ba92bf6cc 100644
--- a/src/vnet/fib/fib_path.c
+++ b/src/vnet/fib/fib_path.c
@@ -2571,9 +2571,24 @@ fib_path_contribute_forwarding (fib_node_index_t path_index,
/*
* Create the adj needed for sending IP multicast traffic
*/
- ai = adj_mcast_add_or_lock(dpo_proto_to_fib(path->fp_nh_proto),
- fib_forw_chain_type_to_link_type(fct),
- path->attached.fp_interface);
+ if (vnet_sw_interface_is_p2p(vnet_get_main(),
+ path->attached.fp_interface))
+ {
+ /*
+ * point-2-point interfaces do not require a glean, since
+ * there is nothing to ARP. Install a rewrite/nbr adj instead
+ */
+ ai = adj_nbr_add_or_lock(dpo_proto_to_fib(path->fp_nh_proto),
+ fib_forw_chain_type_to_link_type(fct),
+ &zero_addr,
+ path->attached.fp_interface);
+ }
+ else
+ {
+ ai = adj_mcast_add_or_lock(dpo_proto_to_fib(path->fp_nh_proto),
+ fib_forw_chain_type_to_link_type(fct),
+ path->attached.fp_interface);
+ }
dpo_set(dpo, DPO_ADJACENCY,
fib_forw_chain_type_to_dpo_proto(fct),
ai);