diff options
| author |   Alexander Chernavin <achernavin@netgate.com> | 2020-01-23 08:09:40 -0500 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2020-01-30 11:03:31 +0000 |
| commit | 56817e2c486a26167783676774b0dea9c103b200 (patch) | |
| tree | b88a51c9bdfcdb4ca0859e9b2ae4a4a9315c6f2d /src/plugins/map/ip4_map_t.c | |
| parent | 78b58f65f1c94d7a5efbf191b4a6e8b6cc12ae66 (diff) | |
map: handle ip4 ttl=1 packets in map-t
With this commit, ICMP Time Exceeded is sent to sender when TTL
expires at MAP BR.
Type: fix
Change-Id: I8effe163beab32596883127b819308cc355512c3
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Diffstat (limited to 'src/plugins/map/ip4_map_t.c')
| -rw-r--r-- | src/plugins/map/ip4_map_t.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/plugins/map/ip4_map_t.c b/src/plugins/map/ip4_map_t.c index d243a45cd41..bb5aa451bc5 100644 --- a/src/plugins/map/ip4_map_t.c +++ b/src/plugins/map/ip4_map_t.c @@ -578,6 +578,16 @@ ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) dst_port0 = -1; + if (PREDICT_FALSE (ip40->ttl == 1)) + { + icmp4_error_set_vnet_buffer (p0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + p0->error = error_node->errors[MAP_ERROR_TIME_EXCEEDED]; + next0 = IP4_MAPT_NEXT_ICMP_ERROR; + goto trace; + } + bool df0 = ip40->flags_and_fragment_offset & clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT); |