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authorDmitry Vakhrushev <dmitry@netgate.com>2019-01-16 09:44:03 -0500
committerDmitry Vakhrushev <dmitry@netgate.com>2019-01-16 09:44:03 -0500
commitf5641398aebec2a73ac387a6327e54b43c26d158 (patch)
tree3088d0887ce13381cf800660e56afd4d8ce02cb5 /src/plugins/nat/nat.c
parentd91fa61e8ddd031c755f8feb8b8fd7198fc75f5e (diff)
NAT: Fixed issues with dropping reverse packets with output-feature.
Fixed NAT issues with dropping reverse packets in case NAT worked in 'endpoint-dependent' mode and outside interface has FIB different from 0 when the output-feature is set. In this case, the out2in_ed dynamic hash key was not being created correctly. Change-Id: I6362967f4b09a375a4606eedaa8e264795b25453 Signed-off-by: Dmitry Vakhrushev <dmitry@netgate.com>
Diffstat (limited to 'src/plugins/nat/nat.c')
-rwxr-xr-xsrc/plugins/nat/nat.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c
index 0cfcbf16ceb..4f5a8a68dd2 100755
--- a/src/plugins/nat/nat.c
+++ b/src/plugins/nat/nat.c
@@ -1968,6 +1968,10 @@ snat_interface_add_del_output_feature (u32 sw_if_index,
snat_interface_t *i;
snat_address_t *ap;
snat_static_mapping_t *m;
+ nat_outside_fib_t *outside_fib;
+ u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index);
+
if (sm->deterministic ||
(sm->static_mapping_only && !(sm->static_mapping_connection_tracking)))
@@ -1981,6 +1985,34 @@ snat_interface_add_del_output_feature (u32 sw_if_index,
}));
/* *INDENT-ON* */
+ if (!is_inside)
+ {
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ if (outside_fib->fib_index == fib_index)
+ {
+ if (is_del)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ }
+ else
+ outside_fib->refcount++;
+ goto feature_set;
+ }
+ }
+ /* *INDENT-ON* */
+ if (!is_del)
+ {
+ vec_add2 (sm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = fib_index;
+ }
+ }
+
+feature_set:
if (is_inside)
{
if (sm->endpoint_dependent)