diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/nat/nat.c | 96 |
1 files changed, 92 insertions, 4 deletions
diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c index e3f7fba38e1..a2b4010df0b 100644 --- a/src/plugins/nat/nat.c +++ b/src/plugins/nat/nat.c @@ -716,15 +716,16 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, if (rp_match) return VNET_API_ERROR_VALUE_EXIST; + snat_add_static_mapping_when_resolved + (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto, + addr_only, is_add, tag); + /* DHCP resolution required? */ if (first_int_addr == 0) { - snat_add_static_mapping_when_resolved - (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto, - addr_only, is_add, tag); return 0; } - else + else { e_addr.as_u32 = first_int_addr->as_u32; /* Identity mapping? */ @@ -1774,6 +1775,15 @@ snat_ip4_add_del_interface_address_cb (ip4_main_t * im, u32 if_address_index, u32 is_delete); +static void +nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im, + uword opaque, + u32 sw_if_index, + ip4_address_t * address, + u32 address_length, + u32 if_address_index, + u32 is_delete); + static int nat_alloc_addr_and_port_default (snat_address_t * addresses, u32 fib_index, @@ -1852,6 +1862,11 @@ static clib_error_t * snat_init (vlib_main_t * vm) vec_add1 (im->add_del_interface_address_callbacks, cb4); + cb4.function = nat_ip4_add_del_addr_only_sm_cb; + cb4.function_opaque = 0; + + vec_add1 (im->add_del_interface_address_callbacks, cb4); + nat_dpo_module_init (); /* Init IPFIX logging */ @@ -2733,6 +2748,77 @@ u8 * format_det_map_ses (u8 * s, va_list * args) } static void +nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im, + uword opaque, + u32 sw_if_index, + ip4_address_t * address, + u32 address_length, + u32 if_address_index, + u32 is_delete) +{ + snat_main_t *sm = &snat_main; + snat_static_map_resolve_t *rp; + snat_static_mapping_t *m; + snat_session_key_t m_key; + clib_bihash_kv_8_8_t kv, value; + int i, rv; + ip4_address_t l_addr; + + for (i = 0; i < vec_len (sm->to_resolve); i++) + { + rp = sm->to_resolve + i; + if (rp->addr_only == 0) + continue; + if (rp->sw_if_index == sw_if_index) + goto match; + } + + return; + +match: + m_key.addr.as_u32 = address->as_u32; + m_key.port = rp->addr_only ? 0 : rp->e_port; + m_key.protocol = rp->addr_only ? 0 : rp->proto; + m_key.fib_index = sm->outside_fib_index; + kv.key = m_key.as_u64; + if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) + m = 0; + else + m = pool_elt_at_index (sm->static_mappings, value.value); + + if (!is_delete) + { + /* Don't trip over lease renewal, static config */ + if (m) + return; + } + else + { + if (!m) + return; + } + + /* Indetity mapping? */ + if (rp->l_addr.as_u32 == 0) + l_addr.as_u32 = address[0].as_u32; + else + l_addr.as_u32 = rp->l_addr.as_u32; + /* Add the static mapping */ + rv = snat_add_static_mapping (l_addr, + address[0], + rp->l_port, + rp->e_port, + rp->vrf_id, + rp->addr_only, + ~0 /* sw_if_index */, + rp->proto, + !is_delete, + 0, 0, rp->tag); + if (rv) + clib_warning ("snat_add_static_mapping returned %d", rv); +} + +static void snat_ip4_add_del_interface_address_cb (ip4_main_t * im, uword opaque, u32 sw_if_index, @@ -2778,6 +2864,8 @@ match: for (j = 0; j < vec_len (sm->to_resolve); j++) { rp = sm->to_resolve + j; + if (rp->addr_only) + continue; /* On this interface? */ if (rp->sw_if_index == sw_if_index) { |