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authorMatus Fabian <matfabia@cisco.com>2019-02-18 01:54:16 -0800
committerMatus Fabian <matfabia@cisco.com>2019-02-18 01:56:18 -0800
commit684586786e98bc779e269c0d879a2a4d3f1f4bce (patch)
tree6493da7899397a8bd14b832586757570440ba386 /src/plugins/nat/nat.c
parent830fe7370af7ac9e28e9be04b5b5712b22ad9c31 (diff)
NAT44: fix snat_get_worker_out2in_cb (VPP-1536)
Change-Id: I9c562f8e3407ca60a4412a162015fa505b7590b6 Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/nat/nat.c')
-rwxr-xr-xsrc/plugins/nat/nat.c45
1 files changed, 36 insertions, 9 deletions
diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c
index dabb8122adf..4e9d5023b3f 100755
--- a/src/plugins/nat/nat.c
+++ b/src/plugins/nat/nat.c
@@ -2862,20 +2862,47 @@ snat_get_worker_out2in_cb (ip4_header_t * ip0, u32 rx_fib_index0)
if (PREDICT_FALSE (nat_reass_is_drop_frag (0)))
return vlib_get_thread_index ();
- if (PREDICT_TRUE (!ip4_is_first_fragment (ip0)))
- {
- nat_reass_ip4_t *reass;
+ nat_reass_ip4_t *reass;
+ reass = nat_ip4_reass_find (ip0->src_address, ip0->dst_address,
+ ip0->fragment_id, ip0->protocol);
- reass = nat_ip4_reass_find (ip0->src_address, ip0->dst_address,
- ip0->fragment_id, ip0->protocol);
+ if (reass && (reass->thread_index != (u32) ~ 0))
+ return reass->thread_index;
- if (reass && (reass->thread_index != (u32) ~ 0))
- return reass->thread_index;
- else
- return vlib_get_thread_index ();
+ if (ip4_is_first_fragment (ip0))
+ {
+ reass =
+ nat_ip4_reass_create (ip0->src_address, ip0->dst_address,
+ ip0->fragment_id, ip0->protocol);
+ if (!reass)
+ goto no_reass;
+
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ {
+ m_key.addr = ip0->dst_address;
+ m_key.port = clib_net_to_host_u16 (port);
+ m_key.protocol = proto;
+ m_key.fib_index = rx_fib_index0;
+ kv.key = m_key.as_u64;
+ if (!clib_bihash_search_8_8
+ (&sm->static_mapping_by_external, &kv, &value))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ reass->thread_index = m->workers[0];
+ return reass->thread_index;
+ }
+ }
+ reass->thread_index = sm->first_worker_index;
+ reass->thread_index +=
+ sm->workers[(clib_net_to_host_u16 (port) - 1024) /
+ sm->port_per_thread];
+ return reass->thread_index;
}
+ else
+ return vlib_get_thread_index ();
}
+no_reass:
/* unknown protocol */
if (PREDICT_FALSE (proto == ~0))
{