diff options
| -rw-r--r-- | src/plugins/nat/nat.c | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c index 2ed65a13974..feeee759e1b 100644 --- a/src/plugins/nat/nat.c +++ b/src/plugins/nat/nat.c @@ -1033,6 +1033,33 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, return 0; } +static int lb_local_exists (nat44_lb_addr_port_t * local, + ip4_address_t * e_addr, u16 e_port) +{ + snat_main_t *sm = &snat_main; + snat_static_mapping_t *m; + nat44_lb_addr_port_t *ap; + + /* *INDENT-OFF* */ + pool_foreach (m, sm->static_mappings, + ({ + if (vec_len(m->locals)) + { + if (m->external_port == e_port && m->external_addr.as_u32 == e_addr->as_u32) + continue; + + vec_foreach (ap, m->locals) + { + if (ap->port == local->port && ap->addr.as_u32 == local->addr.as_u32) + return 1; + } + } + })); + /* *INDENT-ON* */ + + return 0; +} + int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, snat_protocol_t proto, u32 vrf_id, nat44_lb_addr_port_t *locals, u8 is_add, @@ -1253,12 +1280,15 @@ int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, } } - m_key.port = clib_host_to_net_u16 (local->port); - kv.key = m_key.as_u64; - if (clib_bihash_add_del_8_8(&tsm->in2out, &kv, 0)) + if (!lb_local_exists(local, &e_addr, e_port)) { - clib_warning ("in2out key del failed"); - return VNET_API_ERROR_UNSPECIFIED; + m_key.port = clib_host_to_net_u16 (local->port); + kv.key = m_key.as_u64; + if (clib_bihash_add_del_8_8(&tsm->in2out, &kv, 0)) + { + clib_warning ("in2out key del failed"); + return VNET_API_ERROR_UNSPECIFIED; + } } /* Delete sessions */ u_key.addr = local->addr; |