diff options
| author |   Neale Ranns <nranns@cisco.com> | 2018-07-11 10:31:26 -0700 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2018-07-20 13:21:03 +0000 |
| commit | 1855b8e48d95289cc9f0a6e339f2148d64ac705c (patch) | |
| tree | 71e888d9aabc16a388c07a5f3c3089ade0fdadab /src/vnet/adj | |
| parent | 631de0dffebf2633e32b55c5c9b4663867a50371 (diff) | |
IP directed broadcast
with ip direct broadcast enable a packet to the interface's
subnet broadcast address with be sent L2 broadcast on the
interface. dissabled, it will be dropped. it is disabled by
default, which preserves current behaviour
Change-Id: If154cb92e64834e97a541b32624354348a0eafb3
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/adj')
| -rw-r--r-- | src/vnet/adj/adj.c | 8 | ||||
| -rw-r--r-- | src/vnet/adj/adj.h | 10 | ||||
| -rw-r--r-- | src/vnet/adj/adj_nbr.c | 5 |
3 files changed, 23 insertions, 0 deletions
diff --git a/src/vnet/adj/adj.c b/src/vnet/adj/adj.c index 0de3fc8b775..80a5d05aaf4 100644 --- a/src/vnet/adj/adj.c +++ b/src/vnet/adj/adj.c @@ -35,6 +35,13 @@ ip_adjacency_t *adj_pool; */ int adj_per_adj_counters; +const ip46_address_t ADJ_BCAST_ADDR = { + .ip6 = { + .as_u64[0] = 0xffffffffffffffff, + .as_u64[1] = 0xffffffffffffffff, + }, +}; + always_inline void adj_poison (ip_adjacency_t * adj) { @@ -172,6 +179,7 @@ adj_last_lock_gone (ip_adjacency_t *adj) /* FALL THROUGH */ case IP_LOOKUP_NEXT_ARP: case IP_LOOKUP_NEXT_REWRITE: + case IP_LOOKUP_NEXT_BCAST: /* * complete and incomplete nbr adjs */ diff --git a/src/vnet/adj/adj.h b/src/vnet/adj/adj.h index fe77d1634e0..18a2e1ddbbb 100644 --- a/src/vnet/adj/adj.h +++ b/src/vnet/adj/adj.h @@ -81,6 +81,9 @@ typedef enum /** Multicast Adjacency. */ IP_LOOKUP_NEXT_MCAST, + /** Broadcasr Adjacency. */ + IP_LOOKUP_NEXT_BCAST, + /** Multicast Midchain Adjacency. An Adjacency for sending macst packets * on a tunnel/virtual interface */ IP_LOOKUP_NEXT_MCAST_MIDCHAIN, @@ -110,6 +113,7 @@ typedef enum [IP_LOOKUP_NEXT_GLEAN] = "ip4-glean", \ [IP_LOOKUP_NEXT_REWRITE] = "ip4-rewrite", \ [IP_LOOKUP_NEXT_MCAST] = "ip4-rewrite-mcast", \ + [IP_LOOKUP_NEXT_BCAST] = "ip4-rewrite-bcast", \ [IP_LOOKUP_NEXT_MIDCHAIN] = "ip4-midchain", \ [IP_LOOKUP_NEXT_MCAST_MIDCHAIN] = "ip4-mcast-midchain", \ [IP_LOOKUP_NEXT_ICMP_ERROR] = "ip4-icmp-error", \ @@ -122,6 +126,7 @@ typedef enum [IP_LOOKUP_NEXT_ARP] = "ip6-discover-neighbor", \ [IP_LOOKUP_NEXT_GLEAN] = "ip6-glean", \ [IP_LOOKUP_NEXT_REWRITE] = "ip6-rewrite", \ + [IP_LOOKUP_NEXT_BCAST] = "ip6-rewrite-bcast", \ [IP_LOOKUP_NEXT_MCAST] = "ip6-rewrite-mcast", \ [IP_LOOKUP_NEXT_MIDCHAIN] = "ip6-midchain", \ [IP_LOOKUP_NEXT_MCAST_MIDCHAIN] = "ip6-mcast-midchain", \ @@ -132,6 +137,11 @@ typedef enum } /** + * The special broadcast address (to construct a broadcast adjacency + */ +extern const ip46_address_t ADJ_BCAST_ADDR; + +/** * Forward delcartion */ struct ip_adjacency_t_; diff --git a/src/vnet/adj/adj_nbr.c b/src/vnet/adj/adj_nbr.c index 3f66acbb5c5..3a474a8e199 100644 --- a/src/vnet/adj/adj_nbr.c +++ b/src/vnet/adj/adj_nbr.c @@ -230,6 +230,11 @@ adj_nbr_add_or_lock (fib_protocol_t nh_proto, adj_index = adj_get_index(adj); adj_lock(adj_index); + if (ip46_address_is_equal(&ADJ_BCAST_ADDR, nh_addr)) + { + adj->lookup_next_index = IP_LOOKUP_NEXT_BCAST; + } + vnet_rewrite_init(vnm, sw_if_index, link_type, adj_get_nd_node(nh_proto), vnet_tx_node_index_for_sw_interface(vnm, sw_if_index), |