diff options
| author |   Klement Sekera <ksekera@cisco.com> | 2019-05-16 14:35:46 +0200 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2019-05-20 12:13:11 +0000 |
| commit | 3a343d42d7bd90753ea6ed48fe750a7a209b1ddf (patch) | |
| tree | ba831c36c69365d67a2d20d7a6d447b831a1b88e /src/vnet/ip/ip_api.c | |
| parent | b388e1a50603a07e20007141221ca4f4a18ab698 (diff) | |
reassembly: prevent long chain attack
limit max # of fragments to 3 per packet by default
add API option to configure the limit at runtime
Change-Id: Ie4b9507bf5c6095b9a5925972b37fe0032f4f9e8
Signed-off-by: Klement Sekera <ksekera@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip_api.c')
| -rw-r--r-- | src/vnet/ip/ip_api.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c index ce3456d77d9..5a6053d1f42 100644 --- a/src/vnet/ip/ip_api.c +++ b/src/vnet/ip/ip_api.c @@ -3328,12 +3328,14 @@ vl_api_ip_reassembly_set_t_handler (vl_api_ip_reassembly_set_t * mp) { rv = ip6_reass_set (clib_net_to_host_u32 (mp->timeout_ms), clib_net_to_host_u32 (mp->max_reassemblies), + clib_net_to_host_u32 (mp->max_reassembly_length), clib_net_to_host_u32 (mp->expire_walk_interval_ms)); } else { rv = ip4_reass_set (clib_net_to_host_u32 (mp->timeout_ms), clib_net_to_host_u32 (mp->max_reassemblies), + clib_net_to_host_u32 (mp->max_reassembly_length), clib_net_to_host_u32 (mp->expire_walk_interval_ms)); } @@ -3364,6 +3366,7 @@ vl_api_ip_reassembly_get_t_handler (vl_api_ip_reassembly_get_t * mp) { rmp->is_ip6 = 0; ip4_reass_get (&rmp->timeout_ms, &rmp->max_reassemblies, + &rmp->max_reassembly_length, &rmp->expire_walk_interval_ms); } rmp->timeout_ms = clib_host_to_net_u32 (rmp->timeout_ms); |