+ {
+ if (ip->protocol == IP_PROTOCOL_TCP)
+ {
+ 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,
+ s->per_user_index);
+ return 0;
+ }