NAT44: nat44_del_session and nat44_user_session_details API update (VPP-1271)

[vpp.git] / src / plugins / nat / in2out.c

diff --git a/src/plugins/nat/in2out.c b/src/plugins/nat/in2out.c
index d3369b6..1659ed0 100755 (executable)
--- a/src/plugins/nat/in2out.c
+++ b/src/plugins/nat/in2out.c
@@ -498,6 +498,7 @@ nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
   udp_header_t *udp;
   snat_session_t *s = 0;
   snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+  f64 now = vlib_time_now (sm->vlib_main);
 
   if (!sm->forwarding_enabled)
     return 0;
@@ -535,12 +536,16 @@ nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
           if (ip->protocol == IP_PROTOCOL_TCP)
             {
               tcp_header_t *tcp = ip4_next_header(ip);
-              nat44_set_tcp_session_state (sm, s, tcp, thread_index);
+              if (nat44_set_tcp_session_state_i2o (sm, s, tcp, thread_index))
+                return 1;
             }
           /* Per-user LRU list maintenance */
           clib_dlist_remove (tsm->list_pool, s->per_user_index);
           clib_dlist_addtail (tsm->list_pool, s->per_user_list_head_index,
                               s->per_user_index);
+          /* Accounting */
+          s->last_heard = now;
+          s->total_pkts++;
           return 1;
         }
       else
@@ -1376,7 +1381,10 @@ snat_in2out_lb (snat_main_t *sm,
       if (is_fwd_bypass_session (s))
         {
           if (ip->protocol == IP_PROTOCOL_TCP)
-            nat44_set_tcp_session_state (sm, s, tcp, thread_index);
+            {
+              if (nat44_set_tcp_session_state_i2o (sm, s, tcp, thread_index))
+                return 0;
+            }
           /* Per-user LRU list maintenance */
           clib_dlist_remove (tsm->list_pool, s->per_user_index);
           clib_dlist_addtail (tsm->list_pool, s->per_user_list_head_index,
@@ -1450,6 +1458,9 @@ snat_in2out_lb (snat_main_t *sm,
                           s->ext_host_addr.as_u32, ip4_header_t, dst_address);
   ip->checksum = ip_csum_fold (sum);
 
+  if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
+    vnet_buffer(b)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+
   if (PREDICT_TRUE(proto == SNAT_PROTOCOL_TCP))
     {
       old_port = tcp->src_port;
@@ -1470,7 +1481,8 @@ snat_in2out_lb (snat_main_t *sm,
           ip->dst_address.as_u32 = s->ext_host_addr.as_u32;
         }
       tcp->checksum = ip_csum_fold(sum);
-      nat44_set_tcp_session_state (sm, s, tcp, thread_index);
+      if (nat44_set_tcp_session_state_i2o (sm, s, tcp, thread_index))
+        return s;
     }
   else
     {
@@ -1483,9 +1495,6 @@ snat_in2out_lb (snat_main_t *sm,
       udp->checksum = 0;
     }
 
-  if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
-    vnet_buffer(b)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
-
   /* Accounting */
   s->last_heard = now;
   s->total_pkts++;
@@ -1729,7 +1738,6 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
                                      ip4_header_t /* cheat */,
                                      length /* changed member */);
               tcp0->checksum = ip_csum_fold(sum0);
-              nat44_set_tcp_session_state (sm, s0, tcp0, thread_index);
             }
           else
             {
@@ -1922,7 +1930,6 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
                                      ip4_header_t /* cheat */,
                                      length /* changed member */);
               tcp1->checksum = ip_csum_fold(sum1);
-              nat44_set_tcp_session_state (sm, s1, tcp1, thread_index);
             }
           else
             {
@@ -2152,7 +2159,6 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
                                      ip4_header_t /* cheat */,
                                      length /* changed member */);
               tcp0->checksum = ip_csum_fold(sum0);
-              nat44_set_tcp_session_state (sm, s0, tcp0, thread_index);
             }
           else
             {
@@ -2685,7 +2691,6 @@ nat44_in2out_reass_node_fn (vlib_main_t * vm,
                                          ip4_header_t /* cheat */,
                                          length /* changed member */);
                   tcp0->checksum = ip_csum_fold(sum0);
-                  nat44_set_tcp_session_state (sm, s0, tcp0, thread_index);
                 }
               else
                 {