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Diffstat (limited to 'src/plugins/cnat/cnat_session.c')
-rw-r--r--src/plugins/cnat/cnat_session.c35
1 files changed, 33 insertions, 2 deletions
diff --git a/src/plugins/cnat/cnat_session.c b/src/plugins/cnat/cnat_session.c
index 216d2575c37..fa04de602b4 100644
--- a/src/plugins/cnat/cnat_session.c
+++ b/src/plugins/cnat/cnat_session.c
@@ -172,15 +172,43 @@ cnat_session_purge (void)
return (0);
}
+void
+cnat_reverse_session_free (cnat_session_t *session)
+{
+ cnat_bihash_kv_t bkey, bvalue;
+ cnat_session_t *rsession = (cnat_session_t *) &bkey;
+ int rv;
+
+ ip46_address_copy (&rsession->key.cs_ip[VLIB_RX],
+ &session->value.cs_ip[VLIB_TX]);
+ ip46_address_copy (&rsession->key.cs_ip[VLIB_TX],
+ &session->value.cs_ip[VLIB_RX]);
+ rsession->key.cs_proto = session->key.cs_proto;
+ rsession->key.cs_loc = session->key.cs_loc == CNAT_LOCATION_OUTPUT ?
+ CNAT_LOCATION_INPUT :
+ CNAT_LOCATION_OUTPUT;
+ rsession->key.__cs_pad = 0;
+ rsession->key.cs_af = session->key.cs_af;
+ rsession->key.cs_port[VLIB_RX] = session->value.cs_port[VLIB_TX];
+ rsession->key.cs_port[VLIB_TX] = session->value.cs_port[VLIB_RX];
+
+ rv = cnat_bihash_search_i2 (&cnat_session_db, &bkey, &bvalue);
+ if (!rv)
+ {
+ /* other session is in bihash */
+ cnat_session_t *rsession = (cnat_session_t *) &bvalue;
+ cnat_session_free (rsession);
+ }
+}
+
u64
cnat_session_scan (vlib_main_t * vm, f64 start_time, int i)
{
BVT (clib_bihash) * h = &cnat_session_db;
int j, k;
- /* Don't scan the l2 fib if it hasn't been instantiated yet */
if (alloc_arena (h) == 0)
- return 0.0;
+ return 0;
for ( /* caller saves starting point */ ; i < h->nbuckets; i++)
{
@@ -219,6 +247,9 @@ cnat_session_scan (vlib_main_t * vm, f64 start_time, int i)
cnat_timestamp_exp (session->value.cs_ts_index))
{
/* age it */
+ cnat_reverse_session_free (session);
+ /* this should be last as deleting the session memset it to
+ * 0xff */
cnat_session_free (session);
/*