diff options
| author |   Matus Fabian <matfabia@cisco.com> | 2018-01-23 06:07:01 -0800 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2018-01-24 07:46:54 +0000 |
| commit | d95c39e87bf9d21b2a9d4c49fdf7ebca2a5eab3d (patch) | |
| tree | e2e12e4cedacd24446d8991f6de5998122c67846 /src/plugins/nat/nat.c | |
| parent | 6cd396cec3a768711d582e1df209a6e94aa4726e (diff) | |
NAT44: asymmetrical static mapping and one-armed NAT (VPP-1138)
One-armed NAT should work for asymmetrical static mappings without adding external address to the NAT44 pool.
Change-Id: Ie886b75b55c3b552d1029a50bd967625fde80f09
Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/nat/nat.c')
| -rw-r--r-- | src/plugins/nat/nat.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c index bedf4e5d386..56904ef7e04 100644 --- a/src/plugins/nat/nat.c +++ b/src/plugins/nat/nat.c @@ -387,7 +387,7 @@ nat44_classify_node_fn_inline (vlib_main_t * vm, if (ip0->dst_address.as_u32 == ap->addr.as_u32) { next0 = NAT44_CLASSIFY_NEXT_OUT2IN; - break; + goto enqueue0; } } @@ -401,8 +401,17 @@ nat44_classify_node_fn_inline (vlib_main_t * vm, if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv0, &value0)) { next0 = NAT44_CLASSIFY_NEXT_OUT2IN; + goto enqueue0; } + udp_header_t * udp0 = ip4_next_header (ip0); + m_key0.port = clib_net_to_host_u16 (udp0->dst_port); + m_key0.protocol = ip_proto_to_snat_proto (ip0->protocol); + kv0.key = m_key0.as_u64; + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv0, &value0)) + next0 = NAT44_CLASSIFY_NEXT_OUT2IN; } + + enqueue0: /* verify speculative enqueue, maybe switch current next frame */ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, |