2 * snat.c - simple nat plugin
4 * Copyright (c) 2016 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/ip/ip.h>
20 #include <vnet/ip/ip4.h>
21 #include <vnet/plugin/plugin.h>
22 #include <vlibapi/api.h>
23 #include <snat/snat.h>
24 #include <snat/snat_ipfix_logging.h>
25 #include <vnet/fib/fib_table.h>
26 #include <vnet/fib/ip4_fib.h>
28 #include <vlibapi/api.h>
29 #include <vlibmemory/api.h>
30 #include <vlibsocket/api.h>
31 #include <vpp/app/version.h>
33 snat_main_t snat_main;
35 /* define message IDs */
36 #include <snat/snat_msg_enum.h>
38 /* define message structures */
40 #include <snat/snat_all_api_h.h>
43 /* define generated endian-swappers */
45 #include <snat/snat_all_api_h.h>
48 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
50 /* Get the API version number */
51 #define vl_api_version(n,v) static u32 api_version=(v);
52 #include <snat/snat_all_api_h.h>
55 /* Macro to finish up custom dump fns */
58 vl_print (handle, (char *)s); \
63 * A handy macro to set up a message reply.
64 * Assumes that the following variables are available:
65 * mp - pointer to request message
66 * rmp - pointer to reply message type
70 #define REPLY_MACRO(t) \
72 unix_shared_memory_queue_t * q = \
73 vl_api_client_index_to_input_queue (mp->client_index); \
77 rmp = vl_msg_api_alloc (sizeof (*rmp)); \
78 rmp->_vl_msg_id = ntohs((t)+sm->msg_id_base); \
79 rmp->context = mp->context; \
80 rmp->retval = ntohl(rv); \
82 vl_msg_api_send_shmem (q, (u8 *)&rmp); \
85 #define REPLY_MACRO2(t, body) \
87 unix_shared_memory_queue_t * q = \
88 vl_api_client_index_to_input_queue (mp->client_index); \
92 rmp = vl_msg_api_alloc (sizeof (*rmp)); \
93 rmp->_vl_msg_id = ntohs((t)+sm->msg_id_base); \
94 rmp->context = mp->context; \
95 rmp->retval = ntohl(rv); \
96 do {body;} while (0); \
97 vl_msg_api_send_shmem (q, (u8 *)&rmp); \
101 /* Hook up input features */
102 VNET_FEATURE_INIT (ip4_snat_in2out, static) = {
103 .arc_name = "ip4-unicast",
104 .node_name = "snat-in2out",
105 .runs_before = VNET_FEATURES ("snat-out2in"),
107 VNET_FEATURE_INIT (ip4_snat_out2in, static) = {
108 .arc_name = "ip4-unicast",
109 .node_name = "snat-out2in",
110 .runs_before = VNET_FEATURES ("ip4-lookup"),
112 VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = {
113 .arc_name = "ip4-unicast",
114 .node_name = "snat-in2out-worker-handoff",
115 .runs_before = VNET_FEATURES ("snat-out2in-worker-handoff"),
117 VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = {
118 .arc_name = "ip4-unicast",
119 .node_name = "snat-out2in-worker-handoff",
120 .runs_before = VNET_FEATURES ("ip4-lookup"),
122 VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = {
123 .arc_name = "ip4-unicast",
124 .node_name = "snat-in2out-fast",
125 .runs_before = VNET_FEATURES ("snat-out2in-fast"),
127 VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = {
128 .arc_name = "ip4-unicast",
129 .node_name = "snat-out2in-fast",
130 .runs_before = VNET_FEATURES ("ip4-lookup"),
134 VLIB_PLUGIN_REGISTER () = {
135 .version = VPP_BUILD_VER,
139 /*$$$$$ move to an installed header file */
140 #if (1 || CLIB_DEBUG > 0) /* "trust, but verify" */
142 #define VALIDATE_SW_IF_INDEX(mp) \
143 do { u32 __sw_if_index = ntohl(mp->sw_if_index); \
144 vnet_main_t *__vnm = vnet_get_main(); \
145 if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
147 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
148 goto bad_sw_if_index; \
152 #define BAD_SW_IF_INDEX_LABEL \
158 #define VALIDATE_RX_SW_IF_INDEX(mp) \
159 do { u32 __rx_sw_if_index = ntohl(mp->rx_sw_if_index); \
160 vnet_main_t *__vnm = vnet_get_main(); \
161 if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
162 __rx_sw_if_index)) { \
163 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
164 goto bad_rx_sw_if_index; \
168 #define BAD_RX_SW_IF_INDEX_LABEL \
170 bad_rx_sw_if_index: \
174 #define VALIDATE_TX_SW_IF_INDEX(mp) \
175 do { u32 __tx_sw_if_index = ntohl(mp->tx_sw_if_index); \
176 vnet_main_t *__vnm = vnet_get_main(); \
177 if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
178 __tx_sw_if_index)) { \
179 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
180 goto bad_tx_sw_if_index; \
184 #define BAD_TX_SW_IF_INDEX_LABEL \
186 bad_tx_sw_if_index: \
192 #define VALIDATE_SW_IF_INDEX(mp)
193 #define BAD_SW_IF_INDEX_LABEL
194 #define VALIDATE_RX_SW_IF_INDEX(mp)
195 #define BAD_RX_SW_IF_INDEX_LABEL
196 #define VALIDATE_TX_SW_IF_INDEX(mp)
197 #define BAD_TX_SW_IF_INDEX_LABEL
199 #endif /* CLIB_DEBUG > 0 */
202 * @brief Add/del NAT address to FIB.
204 * Add the external NAT address to the FIB as receive entries. This ensures
205 * that VPP will reply to ARP for this address and we don't need to enable
206 * proxy ARP on the outside interface.
208 * @param addr IPv4 address.
209 * @param sw_if_index Interface.
210 * @param is_add If 0 delete, otherwise add.
213 snat_add_del_addr_to_fib (ip4_address_t * addr, u32 sw_if_index, int is_add)
215 fib_prefix_t prefix = {
217 .fp_proto = FIB_PROTOCOL_IP4,
219 .ip4.as_u32 = addr->as_u32,
222 u32 fib_index = ip4_fib_table_get_index_for_sw_if_index(sw_if_index);
225 fib_table_entry_update_one_path(fib_index,
227 FIB_SOURCE_PLUGIN_HI,
228 (FIB_ENTRY_FLAG_CONNECTED |
229 FIB_ENTRY_FLAG_LOCAL |
230 FIB_ENTRY_FLAG_EXCLUSIVE),
237 FIB_ROUTE_PATH_FLAG_NONE);
239 fib_table_entry_delete(fib_index,
241 FIB_SOURCE_PLUGIN_HI);
244 void snat_add_address (snat_main_t *sm, ip4_address_t *addr)
249 /* Check if address already exists */
250 vec_foreach (ap, sm->addresses)
252 if (ap->addr.as_u32 == addr->as_u32)
256 vec_add2 (sm->addresses, ap, 1);
258 #define _(N, i, n, s) \
259 clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535);
260 foreach_snat_protocol
263 /* Add external address to FIB */
264 pool_foreach (i, sm->interfaces,
269 snat_add_del_addr_to_fib(addr, i->sw_if_index, 1);
274 static int is_snat_address_used_in_static_mapping (snat_main_t *sm,
277 snat_static_mapping_t *m;
278 pool_foreach (m, sm->static_mappings,
280 if (m->external_addr.as_u32 == addr.as_u32)
287 static void increment_v4_address (ip4_address_t * a)
291 v = clib_net_to_host_u32(a->as_u32) + 1;
292 a->as_u32 = clib_host_to_net_u32(v);
296 snat_add_static_mapping_when_resolved (snat_main_t * sm,
297 ip4_address_t l_addr,
302 snat_protocol_t proto,
306 snat_static_map_resolve_t *rp;
308 vec_add2 (sm->to_resolve, rp, 1);
309 rp->l_addr.as_u32 = l_addr.as_u32;
311 rp->sw_if_index = sw_if_index;
315 rp->addr_only = addr_only;
320 * @brief Add static mapping.
322 * Create static mapping between local addr+port and external addr+port.
324 * @param l_addr Local IPv4 address.
325 * @param e_addr External IPv4 address.
326 * @param l_port Local port number.
327 * @param e_port External port number.
328 * @param vrf_id VRF ID.
329 * @param addr_only If 0 address port and pair mapping, otherwise address only.
330 * @param sw_if_index External port instead of specific IP address.
331 * @param is_add If 0 delete static mapping, otherwise add.
335 int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr,
336 u16 l_port, u16 e_port, u32 vrf_id, int addr_only,
337 u32 sw_if_index, snat_protocol_t proto, int is_add)
339 snat_main_t * sm = &snat_main;
340 snat_static_mapping_t *m;
341 snat_session_key_t m_key;
342 clib_bihash_kv_8_8_t kv, value;
343 snat_address_t *a = 0;
346 snat_interface_t *interface;
349 /* If the external address is a specific interface address */
350 if (sw_if_index != ~0)
352 ip4_address_t * first_int_addr;
354 /* Might be already set... */
355 first_int_addr = ip4_interface_first_address
356 (sm->ip4_main, sw_if_index, 0 /* just want the address*/);
358 /* DHCP resolution required? */
359 if (first_int_addr == 0)
361 snat_add_static_mapping_when_resolved
362 (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto,
367 e_addr.as_u32 = first_int_addr->as_u32;
371 m_key.port = addr_only ? 0 : e_port;
372 m_key.protocol = addr_only ? 0 : proto;
373 m_key.fib_index = sm->outside_fib_index;
374 kv.key = m_key.as_u64;
375 if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
378 m = pool_elt_at_index (sm->static_mappings, value.value);
383 return VNET_API_ERROR_VALUE_EXIST;
385 /* Convert VRF id to FIB index */
388 p = hash_get (sm->ip4_main->fib_index_by_table_id, vrf_id);
390 return VNET_API_ERROR_NO_SUCH_FIB;
393 /* If not specified use inside VRF id from SNAT plugin startup config */
396 fib_index = sm->inside_fib_index;
397 vrf_id = sm->inside_vrf_id;
400 /* Find external address in allocated addresses and reserve port for
401 address and port pair mapping when dynamic translations enabled */
402 if (!addr_only && !(sm->static_mapping_only))
404 for (i = 0; i < vec_len (sm->addresses); i++)
406 if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
408 a = sm->addresses + i;
409 /* External port must be unused */
412 #define _(N, j, n, s) \
413 case SNAT_PROTOCOL_##N: \
414 if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, e_port)) \
415 return VNET_API_ERROR_INVALID_VALUE; \
416 clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 1); \
418 a->busy_##n##_ports++; \
420 foreach_snat_protocol
423 clib_warning("unknown_protocol");
424 return VNET_API_ERROR_INVALID_VALUE_2;
429 /* External address must be allocated */
431 return VNET_API_ERROR_NO_SUCH_ENTRY;
434 pool_get (sm->static_mappings, m);
435 memset (m, 0, sizeof (*m));
436 m->local_addr = l_addr;
437 m->external_addr = e_addr;
438 m->addr_only = addr_only;
440 m->fib_index = fib_index;
443 m->local_port = l_port;
444 m->external_port = e_port;
448 m_key.addr = m->local_addr;
449 m_key.port = m->local_port;
450 m_key.protocol = m->proto;
451 m_key.fib_index = m->fib_index;
452 kv.key = m_key.as_u64;
453 kv.value = m - sm->static_mappings;
454 clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 1);
456 m_key.addr = m->external_addr;
457 m_key.port = m->external_port;
458 m_key.fib_index = sm->outside_fib_index;
459 kv.key = m_key.as_u64;
460 kv.value = m - sm->static_mappings;
461 clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1);
466 snat_user_key_t w_key0;
467 snat_worker_key_t w_key1;
469 w_key0.addr = m->local_addr;
470 w_key0.fib_index = m->fib_index;
471 kv.key = w_key0.as_u64;
473 if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value))
475 kv.value = sm->first_worker_index +
476 sm->workers[sm->next_worker++ % vec_len (sm->workers)];
478 clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv, 1);
482 kv.value = value.value;
485 w_key1.addr = m->external_addr;
486 w_key1.port = clib_host_to_net_u16 (m->external_port);
487 w_key1.fib_index = sm->outside_fib_index;
488 kv.key = w_key1.as_u64;
489 clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv, 1);
495 return VNET_API_ERROR_NO_SUCH_ENTRY;
497 /* Free external address port */
498 if (!addr_only && !(sm->static_mapping_only))
500 for (i = 0; i < vec_len (sm->addresses); i++)
502 if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
504 a = sm->addresses + i;
507 #define _(N, j, n, s) \
508 case SNAT_PROTOCOL_##N: \
509 clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 0); \
511 a->busy_##n##_ports--; \
513 foreach_snat_protocol
516 clib_warning("unknown_protocol");
517 return VNET_API_ERROR_INVALID_VALUE_2;
524 m_key.addr = m->local_addr;
525 m_key.port = m->local_port;
526 m_key.protocol = m->proto;
527 m_key.fib_index = m->fib_index;
528 kv.key = m_key.as_u64;
529 clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0);
531 m_key.addr = m->external_addr;
532 m_key.port = m->external_port;
533 m_key.fib_index = sm->outside_fib_index;
534 kv.key = m_key.as_u64;
535 clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0);
537 /* Delete session(s) for static mapping if exist */
538 if (!(sm->static_mapping_only) ||
539 (sm->static_mapping_only && sm->static_mapping_connection_tracking))
541 snat_user_key_t u_key;
543 dlist_elt_t * head, * elt;
544 u32 elt_index, head_index, del_elt_index;
548 snat_main_per_thread_data_t *tsm;
550 u_key.addr = m->local_addr;
551 u_key.fib_index = m->fib_index;
552 kv.key = u_key.as_u64;
553 if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
555 user_index = value.value;
556 if (!clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value))
557 tsm = vec_elt_at_index (sm->per_thread_data, value.value);
559 tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
560 u = pool_elt_at_index (tsm->users, user_index);
561 if (u->nstaticsessions)
563 head_index = u->sessions_per_user_list_head_index;
564 head = pool_elt_at_index (tsm->list_pool, head_index);
565 elt_index = head->next;
566 elt = pool_elt_at_index (tsm->list_pool, elt_index);
567 ses_index = elt->value;
568 while (ses_index != ~0)
570 s = pool_elt_at_index (tsm->sessions, ses_index);
571 del_elt_index = elt_index;
572 elt_index = elt->next;
573 elt = pool_elt_at_index (tsm->list_pool, elt_index);
574 ses_index = elt->value;
578 if ((s->out2in.addr.as_u32 != e_addr.as_u32) &&
579 (clib_net_to_host_u16 (s->out2in.port) != e_port))
584 snat_ipfix_logging_nat44_ses_delete(s->in2out.addr.as_u32,
585 s->out2in.addr.as_u32,
589 s->in2out.fib_index);
591 value.key = s->in2out.as_u64;
592 clib_bihash_add_del_8_8 (&sm->in2out, &value, 0);
593 value.key = s->out2in.as_u64;
594 clib_bihash_add_del_8_8 (&sm->out2in, &value, 0);
595 pool_put (tsm->sessions, s);
597 clib_dlist_remove (tsm->list_pool, del_elt_index);
598 pool_put_index (tsm->list_pool, del_elt_index);
599 u->nstaticsessions--;
606 pool_put (tsm->users, u);
607 clib_bihash_add_del_8_8 (&sm->user_hash, &kv, 0);
613 /* Delete static mapping from pool */
614 pool_put (sm->static_mappings, m);
620 /* Add/delete external address to FIB */
621 pool_foreach (interface, sm->interfaces,
623 if (interface->is_inside)
626 snat_add_del_addr_to_fib(&e_addr, interface->sw_if_index, is_add);
633 int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm)
635 snat_address_t *a = 0;
637 u32 *ses_to_be_removed = 0, *ses_index;
638 clib_bihash_kv_8_8_t kv, value;
639 snat_user_key_t user_key;
641 snat_main_per_thread_data_t *tsm;
642 snat_static_mapping_t *m;
643 snat_interface_t *interface;
646 /* Find SNAT address */
647 for (i=0; i < vec_len (sm->addresses); i++)
649 if (sm->addresses[i].addr.as_u32 == addr.as_u32)
651 a = sm->addresses + i;
656 return VNET_API_ERROR_NO_SUCH_ENTRY;
660 pool_foreach (m, sm->static_mappings,
662 if (m->external_addr.as_u32 == addr.as_u32)
663 (void) snat_add_static_mapping (m->local_addr, m->external_addr,
664 m->local_port, m->external_port,
665 m->vrf_id, m->addr_only, ~0,
671 /* Check if address is used in some static mapping */
672 if (is_snat_address_used_in_static_mapping(sm, addr))
674 clib_warning ("address used in static mapping");
675 return VNET_API_ERROR_UNSPECIFIED;
679 /* Delete sessions using address */
680 if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports)
682 vec_foreach (tsm, sm->per_thread_data)
684 pool_foreach (ses, tsm->sessions, ({
685 if (ses->out2in.addr.as_u32 == addr.as_u32)
688 snat_ipfix_logging_nat44_ses_delete(ses->in2out.addr.as_u32,
689 ses->out2in.addr.as_u32,
690 ses->in2out.protocol,
693 ses->in2out.fib_index);
694 vec_add1 (ses_to_be_removed, ses - tsm->sessions);
695 kv.key = ses->in2out.as_u64;
696 clib_bihash_add_del_8_8 (&sm->in2out, &kv, 0);
697 kv.key = ses->out2in.as_u64;
698 clib_bihash_add_del_8_8 (&sm->out2in, &kv, 0);
699 clib_dlist_remove (tsm->list_pool, ses->per_user_index);
700 user_key.addr = ses->in2out.addr;
701 user_key.fib_index = ses->in2out.fib_index;
702 kv.key = user_key.as_u64;
703 if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
705 u = pool_elt_at_index (tsm->users, value.value);
711 vec_foreach (ses_index, ses_to_be_removed)
712 pool_put_index (tsm->sessions, ses_index[0]);
714 vec_free (ses_to_be_removed);
718 vec_del1 (sm->addresses, i);
720 /* Delete external address from FIB */
721 pool_foreach (interface, sm->interfaces,
723 if (interface->is_inside)
726 snat_add_del_addr_to_fib(&addr, interface->sw_if_index, 0);
733 static int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
735 snat_main_t *sm = &snat_main;
737 const char * feature_name;
739 snat_static_mapping_t * m;
741 if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
742 feature_name = is_inside ? "snat-in2out-fast" : "snat-out2in-fast";
745 if (sm->num_workers > 1)
746 feature_name = is_inside ? "snat-in2out-worker-handoff" : "snat-out2in-worker-handoff";
748 feature_name = is_inside ? "snat-in2out" : "snat-out2in";
751 vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index,
754 if (sm->fq_in2out_index == ~0)
755 sm->fq_in2out_index = vlib_frame_queue_main_init (snat_in2out_node.index, 0);
757 if (sm->fq_out2in_index == ~0)
758 sm->fq_out2in_index = vlib_frame_queue_main_init (snat_out2in_node.index, 0);
760 pool_foreach (i, sm->interfaces,
762 if (i->sw_if_index == sw_if_index)
765 pool_put (sm->interfaces, i);
767 return VNET_API_ERROR_VALUE_EXIST;
774 return VNET_API_ERROR_NO_SUCH_ENTRY;
776 pool_get (sm->interfaces, i);
777 i->sw_if_index = sw_if_index;
778 i->is_inside = is_inside;
780 /* Add/delete external addresses to FIB */
785 vec_foreach (ap, sm->addresses)
786 snat_add_del_addr_to_fib(&ap->addr, sw_if_index, !is_del);
788 pool_foreach (m, sm->static_mappings,
793 snat_add_del_addr_to_fib(&m->external_addr, sw_if_index, !is_del);
799 static int snat_set_workers (uword * bitmap)
801 snat_main_t *sm = &snat_main;
804 if (sm->num_workers < 2)
805 return VNET_API_ERROR_FEATURE_DISABLED;
807 if (clib_bitmap_last_set (bitmap) >= sm->num_workers)
808 return VNET_API_ERROR_INVALID_WORKER;
810 vec_free (sm->workers);
811 clib_bitmap_foreach (i, bitmap,
813 vec_add1(sm->workers, i);
820 vl_api_snat_add_address_range_t_handler
821 (vl_api_snat_add_address_range_t * mp)
823 snat_main_t * sm = &snat_main;
824 vl_api_snat_add_address_range_reply_t * rmp;
825 ip4_address_t this_addr;
826 u32 start_host_order, end_host_order;
833 rv = VNET_API_ERROR_UNIMPLEMENTED;
837 if (sm->static_mapping_only)
839 rv = VNET_API_ERROR_FEATURE_DISABLED;
843 tmp = (u32 *) mp->first_ip_address;
844 start_host_order = clib_host_to_net_u32 (tmp[0]);
845 tmp = (u32 *) mp->last_ip_address;
846 end_host_order = clib_host_to_net_u32 (tmp[0]);
848 count = (end_host_order - start_host_order) + 1;
851 clib_warning ("%U - %U, %d addresses...",
852 format_ip4_address, mp->first_ip_address,
853 format_ip4_address, mp->last_ip_address,
856 memcpy (&this_addr.as_u8, mp->first_ip_address, 4);
858 for (i = 0; i < count; i++)
861 snat_add_address (sm, &this_addr);
863 rv = snat_del_address (sm, this_addr, 0);
868 increment_v4_address (&this_addr);
872 REPLY_MACRO (VL_API_SNAT_ADD_ADDRESS_RANGE_REPLY);
875 static void *vl_api_snat_add_address_range_t_print
876 (vl_api_snat_add_address_range_t *mp, void * handle)
880 s = format (0, "SCRIPT: snat_add_address_range ");
881 s = format (s, "%U ", format_ip4_address, mp->first_ip_address);
882 if (memcmp (mp->first_ip_address, mp->last_ip_address, 4))
884 s = format (s, " - %U ", format_ip4_address, mp->last_ip_address);
890 send_snat_address_details
891 (snat_address_t * a, unix_shared_memory_queue_t * q, u32 context)
893 vl_api_snat_address_details_t *rmp;
894 snat_main_t * sm = &snat_main;
896 rmp = vl_msg_api_alloc (sizeof (*rmp));
897 memset (rmp, 0, sizeof (*rmp));
898 rmp->_vl_msg_id = ntohs (VL_API_SNAT_ADDRESS_DETAILS+sm->msg_id_base);
900 clib_memcpy (rmp->ip_address, &(a->addr), 4);
901 rmp->context = context;
903 vl_msg_api_send_shmem (q, (u8 *) & rmp);
907 vl_api_snat_address_dump_t_handler
908 (vl_api_snat_address_dump_t * mp)
910 unix_shared_memory_queue_t *q;
911 snat_main_t * sm = &snat_main;
914 q = vl_api_client_index_to_input_queue (mp->client_index);
918 vec_foreach (a, sm->addresses)
919 send_snat_address_details (a, q, mp->context);
922 static void *vl_api_snat_address_dump_t_print
923 (vl_api_snat_address_dump_t *mp, void * handle)
927 s = format (0, "SCRIPT: snat_address_dump ");
933 vl_api_snat_interface_add_del_feature_t_handler
934 (vl_api_snat_interface_add_del_feature_t * mp)
936 snat_main_t * sm = &snat_main;
937 vl_api_snat_interface_add_del_feature_reply_t * rmp;
938 u8 is_del = mp->is_add == 0;
939 u32 sw_if_index = ntohl(mp->sw_if_index);
942 VALIDATE_SW_IF_INDEX(mp);
944 rv = snat_interface_add_del (sw_if_index, mp->is_inside, is_del);
946 BAD_SW_IF_INDEX_LABEL;
948 REPLY_MACRO(VL_API_SNAT_INTERFACE_ADD_DEL_FEATURE_REPLY);
951 static void *vl_api_snat_interface_add_del_feature_t_print
952 (vl_api_snat_interface_add_del_feature_t * mp, void *handle)
956 s = format (0, "SCRIPT: snat_interface_add_del_feature ");
957 s = format (s, "sw_if_index %d %s %s",
958 clib_host_to_net_u32(mp->sw_if_index),
959 mp->is_inside ? "in":"out",
960 mp->is_add ? "" : "del");
966 send_snat_interface_details
967 (snat_interface_t * i, unix_shared_memory_queue_t * q, u32 context)
969 vl_api_snat_interface_details_t *rmp;
970 snat_main_t * sm = &snat_main;
972 rmp = vl_msg_api_alloc (sizeof (*rmp));
973 memset (rmp, 0, sizeof (*rmp));
974 rmp->_vl_msg_id = ntohs (VL_API_SNAT_INTERFACE_DETAILS+sm->msg_id_base);
975 rmp->sw_if_index = ntohl (i->sw_if_index);
976 rmp->is_inside = i->is_inside;
977 rmp->context = context;
979 vl_msg_api_send_shmem (q, (u8 *) & rmp);
983 vl_api_snat_interface_dump_t_handler
984 (vl_api_snat_interface_dump_t * mp)
986 unix_shared_memory_queue_t *q;
987 snat_main_t * sm = &snat_main;
988 snat_interface_t * i;
990 q = vl_api_client_index_to_input_queue (mp->client_index);
994 pool_foreach (i, sm->interfaces,
996 send_snat_interface_details(i, q, mp->context);
1000 static void *vl_api_snat_interface_dump_t_print
1001 (vl_api_snat_interface_dump_t *mp, void * handle)
1005 s = format (0, "SCRIPT: snat_interface_dump ");
1010 vl_api_snat_add_static_mapping_t_handler
1011 (vl_api_snat_add_static_mapping_t * mp)
1013 snat_main_t * sm = &snat_main;
1014 vl_api_snat_add_static_mapping_reply_t * rmp;
1015 ip4_address_t local_addr, external_addr;
1016 u16 local_port = 0, external_port = 0;
1017 u32 vrf_id, external_sw_if_index;
1019 snat_protocol_t proto;
1021 if (mp->is_ip4 != 1)
1023 rv = VNET_API_ERROR_UNIMPLEMENTED;
1027 memcpy (&local_addr.as_u8, mp->local_ip_address, 4);
1028 memcpy (&external_addr.as_u8, mp->external_ip_address, 4);
1029 if (mp->addr_only == 0)
1031 local_port = clib_net_to_host_u16 (mp->local_port);
1032 external_port = clib_net_to_host_u16 (mp->external_port);
1034 vrf_id = clib_net_to_host_u32 (mp->vrf_id);
1035 external_sw_if_index = clib_net_to_host_u32 (mp->external_sw_if_index);
1036 proto = ip_proto_to_snat_proto (mp->protocol);
1038 rv = snat_add_static_mapping(local_addr, external_addr, local_port,
1039 external_port, vrf_id, mp->addr_only,
1040 external_sw_if_index, proto, mp->is_add);
1043 REPLY_MACRO (VL_API_SNAT_ADD_ADDRESS_RANGE_REPLY);
1046 static void *vl_api_snat_add_static_mapping_t_print
1047 (vl_api_snat_add_static_mapping_t *mp, void * handle)
1051 s = format (0, "SCRIPT: snat_add_static_mapping ");
1052 s = format (s, "protocol %d local_addr %U external_addr %U ",
1054 format_ip4_address, mp->local_ip_address,
1055 format_ip4_address, mp->external_ip_address);
1057 if (mp->addr_only == 0)
1058 s = format (s, "local_port %d external_port %d ",
1059 clib_net_to_host_u16 (mp->local_port),
1060 clib_net_to_host_u16 (mp->external_port));
1062 if (mp->vrf_id != ~0)
1063 s = format (s, "vrf %d", clib_net_to_host_u32 (mp->vrf_id));
1065 if (mp->external_sw_if_index != ~0)
1066 s = format (s, "external_sw_if_index %d",
1067 clib_net_to_host_u32 (mp->external_sw_if_index));
1072 send_snat_static_mapping_details
1073 (snat_static_mapping_t * m, unix_shared_memory_queue_t * q, u32 context)
1075 vl_api_snat_static_mapping_details_t *rmp;
1076 snat_main_t * sm = &snat_main;
1078 rmp = vl_msg_api_alloc (sizeof (*rmp));
1079 memset (rmp, 0, sizeof (*rmp));
1080 rmp->_vl_msg_id = ntohs (VL_API_SNAT_STATIC_MAPPING_DETAILS+sm->msg_id_base);
1082 rmp->addr_only = m->addr_only;
1083 clib_memcpy (rmp->local_ip_address, &(m->local_addr), 4);
1084 clib_memcpy (rmp->external_ip_address, &(m->external_addr), 4);
1085 rmp->local_port = htons (m->local_port);
1086 rmp->external_port = htons (m->external_port);
1087 rmp->vrf_id = htonl (m->vrf_id);
1088 rmp->protocol = snat_proto_to_ip_proto (m->proto);
1089 rmp->context = context;
1091 vl_msg_api_send_shmem (q, (u8 *) & rmp);
1095 vl_api_snat_static_mapping_dump_t_handler
1096 (vl_api_snat_static_mapping_dump_t * mp)
1098 unix_shared_memory_queue_t *q;
1099 snat_main_t * sm = &snat_main;
1100 snat_static_mapping_t * m;
1102 q = vl_api_client_index_to_input_queue (mp->client_index);
1106 pool_foreach (m, sm->static_mappings,
1108 send_snat_static_mapping_details (m, q, mp->context);
1112 static void *vl_api_snat_static_mapping_dump_t_print
1113 (vl_api_snat_static_mapping_dump_t *mp, void * handle)
1117 s = format (0, "SCRIPT: snat_static_mapping_dump ");
1123 vl_api_snat_control_ping_t_handler
1124 (vl_api_snat_control_ping_t * mp)
1126 vl_api_snat_control_ping_reply_t *rmp;
1127 snat_main_t * sm = &snat_main;
1130 REPLY_MACRO2(VL_API_SNAT_CONTROL_PING_REPLY,
1132 rmp->vpe_pid = ntohl (getpid());
1136 static void *vl_api_snat_control_ping_t_print
1137 (vl_api_snat_control_ping_t *mp, void * handle)
1141 s = format (0, "SCRIPT: snat_control_ping ");
1147 vl_api_snat_show_config_t_handler
1148 (vl_api_snat_show_config_t * mp)
1150 vl_api_snat_show_config_reply_t *rmp;
1151 snat_main_t * sm = &snat_main;
1154 REPLY_MACRO2(VL_API_SNAT_SHOW_CONFIG_REPLY,
1156 rmp->translation_buckets = htonl (sm->translation_buckets);
1157 rmp->translation_memory_size = htonl (sm->translation_memory_size);
1158 rmp->user_buckets = htonl (sm->user_buckets);
1159 rmp->user_memory_size = htonl (sm->user_memory_size);
1160 rmp->max_translations_per_user = htonl (sm->max_translations_per_user);
1161 rmp->outside_vrf_id = htonl (sm->outside_vrf_id);
1162 rmp->inside_vrf_id = htonl (sm->inside_vrf_id);
1163 rmp->static_mapping_only = sm->static_mapping_only;
1164 rmp->static_mapping_connection_tracking =
1165 sm->static_mapping_connection_tracking;
1169 static void *vl_api_snat_show_config_t_print
1170 (vl_api_snat_show_config_t *mp, void * handle)
1174 s = format (0, "SCRIPT: snat_show_config ");
1180 vl_api_snat_set_workers_t_handler
1181 (vl_api_snat_set_workers_t * mp)
1183 snat_main_t * sm = &snat_main;
1184 vl_api_snat_set_workers_reply_t * rmp;
1187 u64 mask = clib_net_to_host_u64 (mp->worker_mask);
1189 if (sm->num_workers < 2)
1191 rv = VNET_API_ERROR_FEATURE_DISABLED;
1195 bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
1196 rv = snat_set_workers(bitmap);
1197 clib_bitmap_free (bitmap);
1200 REPLY_MACRO (VL_API_SNAT_SET_WORKERS_REPLY);
1203 static void *vl_api_snat_set_workers_t_print
1204 (vl_api_snat_set_workers_t *mp, void * handle)
1210 u64 mask = clib_net_to_host_u64 (mp->worker_mask);
1212 s = format (0, "SCRIPT: snat_set_workers ");
1213 bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
1214 clib_bitmap_foreach (i, bitmap,
1217 s = format (s, "%d", i);
1219 s = format (s, ",%d", i);
1222 clib_bitmap_free (bitmap);
1227 send_snat_worker_details
1228 (u32 worker_index, unix_shared_memory_queue_t * q, u32 context)
1230 vl_api_snat_worker_details_t *rmp;
1231 snat_main_t * sm = &snat_main;
1232 vlib_worker_thread_t *w =
1233 vlib_worker_threads + worker_index + sm->first_worker_index;
1235 rmp = vl_msg_api_alloc (sizeof (*rmp));
1236 memset (rmp, 0, sizeof (*rmp));
1237 rmp->_vl_msg_id = ntohs (VL_API_SNAT_WORKER_DETAILS+sm->msg_id_base);
1238 rmp->context = context;
1239 rmp->worker_index = htonl (worker_index);
1240 rmp->lcore_id = htonl (w->lcore_id);
1241 strncpy ((char *) rmp->name, (char *) w->name, ARRAY_LEN (rmp->name) - 1);
1243 vl_msg_api_send_shmem (q, (u8 *) & rmp);
1247 vl_api_snat_worker_dump_t_handler
1248 (vl_api_snat_worker_dump_t * mp)
1250 unix_shared_memory_queue_t *q;
1251 snat_main_t * sm = &snat_main;
1254 q = vl_api_client_index_to_input_queue (mp->client_index);
1258 vec_foreach (worker_index, sm->workers)
1260 send_snat_worker_details(*worker_index, q, mp->context);
1264 static void *vl_api_snat_worker_dump_t_print
1265 (vl_api_snat_worker_dump_t *mp, void * handle)
1269 s = format (0, "SCRIPT: snat_worker_dump ");
1274 static int snat_add_interface_address(snat_main_t *sm,
1279 vl_api_snat_add_del_interface_addr_t_handler
1280 (vl_api_snat_add_del_interface_addr_t * mp)
1282 snat_main_t * sm = &snat_main;
1283 vl_api_snat_add_del_interface_addr_reply_t * rmp;
1284 u8 is_del = mp->is_add == 0;
1285 u32 sw_if_index = ntohl(mp->sw_if_index);
1288 VALIDATE_SW_IF_INDEX(mp);
1290 rv = snat_add_interface_address (sm, sw_if_index, is_del);
1292 BAD_SW_IF_INDEX_LABEL;
1294 REPLY_MACRO(VL_API_SNAT_ADD_DEL_INTERFACE_ADDR_REPLY);
1297 static void *vl_api_snat_add_del_interface_addr_t_print
1298 (vl_api_snat_add_del_interface_addr_t * mp, void *handle)
1302 s = format (0, "SCRIPT: snat_add_del_interface_addr ");
1303 s = format (s, "sw_if_index %d %s",
1304 clib_host_to_net_u32(mp->sw_if_index),
1305 mp->is_add ? "" : "del");
1311 send_snat_interface_addr_details
1312 (u32 sw_if_index, unix_shared_memory_queue_t * q, u32 context)
1314 vl_api_snat_interface_addr_details_t *rmp;
1315 snat_main_t * sm = &snat_main;
1317 rmp = vl_msg_api_alloc (sizeof (*rmp));
1318 memset (rmp, 0, sizeof (*rmp));
1319 rmp->_vl_msg_id = ntohs (VL_API_SNAT_INTERFACE_ADDR_DETAILS+sm->msg_id_base);
1320 rmp->sw_if_index = ntohl (sw_if_index);
1321 rmp->context = context;
1323 vl_msg_api_send_shmem (q, (u8 *) & rmp);
1327 vl_api_snat_interface_addr_dump_t_handler
1328 (vl_api_snat_interface_addr_dump_t * mp)
1330 unix_shared_memory_queue_t *q;
1331 snat_main_t * sm = &snat_main;
1334 q = vl_api_client_index_to_input_queue (mp->client_index);
1338 vec_foreach (i, sm->auto_add_sw_if_indices)
1339 send_snat_interface_addr_details(*i, q, mp->context);
1342 static void *vl_api_snat_interface_addr_dump_t_print
1343 (vl_api_snat_interface_addr_dump_t *mp, void * handle)
1347 s = format (0, "SCRIPT: snat_interface_addr_dump ");
1353 vl_api_snat_ipfix_enable_disable_t_handler
1354 (vl_api_snat_ipfix_enable_disable_t * mp)
1356 snat_main_t * sm = &snat_main;
1357 vl_api_snat_ipfix_enable_disable_reply_t * rmp;
1360 rv = snat_ipfix_logging_enable_disable(mp->enable,
1361 clib_host_to_net_u32 (mp->domain_id),
1362 clib_host_to_net_u16 (mp->src_port));
1364 REPLY_MACRO (VL_API_SNAT_IPFIX_ENABLE_DISABLE_REPLY);
1367 static void *vl_api_snat_ipfix_enable_disable_t_print
1368 (vl_api_snat_ipfix_enable_disable_t *mp, void * handle)
1372 s = format (0, "SCRIPT: snat_ipfix_enable_disable ");
1374 s = format (s, "domain %d ", clib_net_to_host_u32 (mp->domain_id));
1376 s = format (s, "src_port %d ", clib_net_to_host_u16 (mp->src_port));
1378 s = format (s, "disable ");
1383 /* List of message types that this plugin understands */
1384 #define foreach_snat_plugin_api_msg \
1385 _(SNAT_ADD_ADDRESS_RANGE, snat_add_address_range) \
1386 _(SNAT_INTERFACE_ADD_DEL_FEATURE, snat_interface_add_del_feature) \
1387 _(SNAT_ADD_STATIC_MAPPING, snat_add_static_mapping) \
1388 _(SNAT_CONTROL_PING, snat_control_ping) \
1389 _(SNAT_STATIC_MAPPING_DUMP, snat_static_mapping_dump) \
1390 _(SNAT_SHOW_CONFIG, snat_show_config) \
1391 _(SNAT_ADDRESS_DUMP, snat_address_dump) \
1392 _(SNAT_INTERFACE_DUMP, snat_interface_dump) \
1393 _(SNAT_SET_WORKERS, snat_set_workers) \
1394 _(SNAT_WORKER_DUMP, snat_worker_dump) \
1395 _(SNAT_ADD_DEL_INTERFACE_ADDR, snat_add_del_interface_addr) \
1396 _(SNAT_INTERFACE_ADDR_DUMP, snat_interface_addr_dump) \
1397 _(SNAT_IPFIX_ENABLE_DISABLE, snat_ipfix_enable_disable)
1399 /* Set up the API message handling tables */
1400 static clib_error_t *
1401 snat_plugin_api_hookup (vlib_main_t *vm)
1403 snat_main_t * sm __attribute__ ((unused)) = &snat_main;
1405 vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base), \
1407 vl_api_##n##_t_handler, \
1409 vl_api_##n##_t_endian, \
1410 vl_api_##n##_t_print, \
1411 sizeof(vl_api_##n##_t), 1);
1412 foreach_snat_plugin_api_msg;
1418 #define vl_msg_name_crc_list
1419 #include <snat/snat_all_api_h.h>
1420 #undef vl_msg_name_crc_list
1423 setup_message_id_table (snat_main_t * sm, api_main_t * am)
1425 #define _(id,n,crc) \
1426 vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + sm->msg_id_base);
1427 foreach_vl_msg_name_crc_snat;
1431 static void plugin_custom_dump_configure (snat_main_t * sm)
1433 #define _(n,f) sm->api_main->msg_print_handlers \
1434 [VL_API_##n + sm->msg_id_base] \
1435 = (void *) vl_api_##f##_t_print;
1436 foreach_snat_plugin_api_msg;
1442 snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
1445 ip4_address_t * address,
1447 u32 if_address_index,
1450 static clib_error_t * snat_init (vlib_main_t * vm)
1452 snat_main_t * sm = &snat_main;
1453 clib_error_t * error = 0;
1454 ip4_main_t * im = &ip4_main;
1455 ip_lookup_main_t * lm = &im->lookup_main;
1458 vlib_thread_registration_t *tr;
1459 vlib_thread_main_t *tm = vlib_get_thread_main ();
1462 ip4_add_del_interface_address_callback_t cb4;
1464 name = format (0, "snat_%08x%c", api_version, 0);
1466 /* Ask for a correctly-sized block of API message decode slots */
1467 sm->msg_id_base = vl_msg_api_get_msg_ids
1468 ((char *) name, VL_MSG_FIRST_AVAILABLE);
1471 sm->vnet_main = vnet_get_main();
1473 sm->ip4_lookup_main = lm;
1474 sm->api_main = &api_main;
1475 sm->first_worker_index = 0;
1476 sm->next_worker = 0;
1477 sm->num_workers = 0;
1479 sm->fq_in2out_index = ~0;
1480 sm->fq_out2in_index = ~0;
1482 p = hash_get_mem (tm->thread_registrations_by_name, "workers");
1485 tr = (vlib_thread_registration_t *) p[0];
1488 sm->num_workers = tr->count;
1489 sm->first_worker_index = tr->first_index;
1493 /* Use all available workers by default */
1494 if (sm->num_workers > 1)
1496 for (i=0; i < sm->num_workers; i++)
1497 bitmap = clib_bitmap_set (bitmap, i, 1);
1498 snat_set_workers(bitmap);
1499 clib_bitmap_free (bitmap);
1502 error = snat_plugin_api_hookup (vm);
1504 /* Add our API messages to the global name_crc hash table */
1505 setup_message_id_table (sm, &api_main);
1507 plugin_custom_dump_configure (sm);
1510 /* Set up the interface address add/del callback */
1511 cb4.function = snat_ip4_add_del_interface_address_cb;
1512 cb4.function_opaque = 0;
1514 vec_add1 (im->add_del_interface_address_callbacks, cb4);
1516 /* Init IPFIX logging */
1517 snat_ipfix_logging_init(vm);
1522 VLIB_INIT_FUNCTION (snat_init);
1524 void snat_free_outside_address_and_port (snat_main_t * sm,
1525 snat_session_key_t * k,
1529 u16 port_host_byte_order = clib_net_to_host_u16 (k->port);
1531 ASSERT (address_index < vec_len (sm->addresses));
1533 a = sm->addresses + address_index;
1535 switch (k->protocol)
1537 #define _(N, i, n, s) \
1538 case SNAT_PROTOCOL_##N: \
1539 ASSERT (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \
1540 port_host_byte_order) == 1); \
1541 clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \
1542 port_host_byte_order, 0); \
1543 a->busy_##n##_ports--; \
1545 foreach_snat_protocol
1548 clib_warning("unknown_protocol");
1554 * @brief Match SNAT static mapping.
1556 * @param sm SNAT main.
1557 * @param match Address and port to match.
1558 * @param mapping External or local address and port of the matched mapping.
1559 * @param by_external If 0 match by local address otherwise match by external
1562 * @returns 0 if match found otherwise 1.
1564 int snat_static_mapping_match (snat_main_t * sm,
1565 snat_session_key_t match,
1566 snat_session_key_t * mapping,
1569 clib_bihash_kv_8_8_t kv, value;
1570 snat_static_mapping_t *m;
1571 snat_session_key_t m_key;
1572 clib_bihash_8_8_t *mapping_hash = &sm->static_mapping_by_local;
1575 mapping_hash = &sm->static_mapping_by_external;
1577 m_key.addr = match.addr;
1578 m_key.port = clib_net_to_host_u16 (match.port);
1579 m_key.protocol = match.protocol;
1580 m_key.fib_index = match.fib_index;
1582 kv.key = m_key.as_u64;
1584 if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
1586 /* Try address only mapping */
1589 kv.key = m_key.as_u64;
1590 if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
1594 m = pool_elt_at_index (sm->static_mappings, value.value);
1598 mapping->addr = m->local_addr;
1599 /* Address only mapping doesn't change port */
1600 mapping->port = m->addr_only ? match.port
1601 : clib_host_to_net_u16 (m->local_port);
1602 mapping->fib_index = m->fib_index;
1606 mapping->addr = m->external_addr;
1607 /* Address only mapping doesn't change port */
1608 mapping->port = m->addr_only ? match.port
1609 : clib_host_to_net_u16 (m->external_port);
1610 mapping->fib_index = sm->outside_fib_index;
1616 int snat_alloc_outside_address_and_port (snat_main_t * sm,
1617 snat_session_key_t * k,
1618 u32 * address_indexp)
1624 for (i = 0; i < vec_len (sm->addresses); i++)
1626 a = sm->addresses + i;
1627 switch (k->protocol)
1629 #define _(N, j, n, s) \
1630 case SNAT_PROTOCOL_##N: \
1631 if (a->busy_##n##_ports < (65535-1024)) \
1635 portnum = random_u32 (&sm->random_seed); \
1636 portnum &= 0xFFFF; \
1637 if (portnum < 1024) \
1639 if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, portnum)) \
1641 clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
1642 a->busy_##n##_ports++; \
1643 k->addr = a->addr; \
1644 k->port = clib_host_to_net_u16(portnum); \
1645 *address_indexp = i; \
1650 foreach_snat_protocol
1653 clib_warning("unknown protocol");
1658 /* Totally out of translations to use... */
1659 snat_ipfix_logging_addresses_exhausted(0);
1664 static clib_error_t *
1665 add_address_command_fn (vlib_main_t * vm,
1666 unformat_input_t * input,
1667 vlib_cli_command_t * cmd)
1669 unformat_input_t _line_input, *line_input = &_line_input;
1670 snat_main_t * sm = &snat_main;
1671 ip4_address_t start_addr, end_addr, this_addr;
1672 u32 start_host_order, end_host_order;
1677 /* Get a line of input. */
1678 if (!unformat_user (input, unformat_line_input, line_input))
1681 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1683 if (unformat (line_input, "%U - %U",
1684 unformat_ip4_address, &start_addr,
1685 unformat_ip4_address, &end_addr))
1687 else if (unformat (line_input, "%U", unformat_ip4_address, &start_addr))
1688 end_addr = start_addr;
1689 else if (unformat (line_input, "del"))
1692 return clib_error_return (0, "unknown input '%U'",
1693 format_unformat_error, input);
1695 unformat_free (line_input);
1697 if (sm->static_mapping_only)
1698 return clib_error_return (0, "static mapping only mode");
1700 start_host_order = clib_host_to_net_u32 (start_addr.as_u32);
1701 end_host_order = clib_host_to_net_u32 (end_addr.as_u32);
1703 if (end_host_order < start_host_order)
1704 return clib_error_return (0, "end address less than start address");
1706 count = (end_host_order - start_host_order) + 1;
1709 clib_warning ("%U - %U, %d addresses...",
1710 format_ip4_address, &start_addr,
1711 format_ip4_address, &end_addr,
1714 this_addr = start_addr;
1716 for (i = 0; i < count; i++)
1719 snat_add_address (sm, &this_addr);
1721 rv = snat_del_address (sm, this_addr, 0);
1725 case VNET_API_ERROR_NO_SUCH_ENTRY:
1726 return clib_error_return (0, "S-NAT address not exist.");
1728 case VNET_API_ERROR_UNSPECIFIED:
1729 return clib_error_return (0, "S-NAT address used in static mapping.");
1735 increment_v4_address (&this_addr);
1741 VLIB_CLI_COMMAND (add_address_command, static) = {
1742 .path = "snat add address",
1743 .short_help = "snat add addresses <ip4-range-start> [- <ip4-range-end>] [del]",
1744 .function = add_address_command_fn,
1747 static clib_error_t *
1748 snat_feature_command_fn (vlib_main_t * vm,
1749 unformat_input_t * input,
1750 vlib_cli_command_t * cmd)
1752 unformat_input_t _line_input, *line_input = &_line_input;
1753 vnet_main_t * vnm = vnet_get_main();
1754 clib_error_t * error = 0;
1756 u32 * inside_sw_if_indices = 0;
1757 u32 * outside_sw_if_indices = 0;
1763 /* Get a line of input. */
1764 if (!unformat_user (input, unformat_line_input, line_input))
1767 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1769 if (unformat (line_input, "in %U", unformat_vnet_sw_interface,
1771 vec_add1 (inside_sw_if_indices, sw_if_index);
1772 else if (unformat (line_input, "out %U", unformat_vnet_sw_interface,
1774 vec_add1 (outside_sw_if_indices, sw_if_index);
1775 else if (unformat (line_input, "del"))
1778 return clib_error_return (0, "unknown input '%U'",
1779 format_unformat_error, input);
1781 unformat_free (line_input);
1783 if (vec_len (inside_sw_if_indices))
1785 for (i = 0; i < vec_len(inside_sw_if_indices); i++)
1787 sw_if_index = inside_sw_if_indices[i];
1788 snat_interface_add_del (sw_if_index, 1, is_del);
1792 if (vec_len (outside_sw_if_indices))
1794 for (i = 0; i < vec_len(outside_sw_if_indices); i++)
1796 sw_if_index = outside_sw_if_indices[i];
1797 snat_interface_add_del (sw_if_index, 0, is_del);
1801 vec_free (inside_sw_if_indices);
1802 vec_free (outside_sw_if_indices);
1807 VLIB_CLI_COMMAND (set_interface_snat_command, static) = {
1808 .path = "set interface snat",
1809 .function = snat_feature_command_fn,
1810 .short_help = "set interface snat in <intfc> out <intfc> [del]",
1814 unformat_snat_protocol (unformat_input_t * input, va_list * args)
1816 u32 *r = va_arg (*args, u32 *);
1819 #define _(N, i, n, s) else if (unformat (input, s)) *r = SNAT_PROTOCOL_##N;
1820 foreach_snat_protocol
1828 format_snat_protocol (u8 * s, va_list * args)
1830 u32 i = va_arg (*args, u32);
1835 #define _(N, j, n, str) case SNAT_PROTOCOL_##N: t = (u8 *) str; break;
1836 foreach_snat_protocol
1839 s = format (s, "unknown");
1841 s = format (s, "%s", t);
1845 static clib_error_t *
1846 add_static_mapping_command_fn (vlib_main_t * vm,
1847 unformat_input_t * input,
1848 vlib_cli_command_t * cmd)
1850 unformat_input_t _line_input, *line_input = &_line_input;
1851 clib_error_t * error = 0;
1852 ip4_address_t l_addr, e_addr;
1853 u32 l_port = 0, e_port = 0, vrf_id = ~0;
1856 u32 sw_if_index = ~0;
1857 vnet_main_t * vnm = vnet_get_main();
1859 snat_protocol_t proto;
1861 /* Get a line of input. */
1862 if (!unformat_user (input, unformat_line_input, line_input))
1865 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1867 if (unformat (line_input, "local %U %u", unformat_ip4_address, &l_addr,
1870 else if (unformat (line_input, "local %U", unformat_ip4_address, &l_addr))
1872 else if (unformat (line_input, "external %U %u", unformat_ip4_address,
1875 else if (unformat (line_input, "external %U", unformat_ip4_address,
1878 else if (unformat (line_input, "external %U %u",
1879 unformat_vnet_sw_interface, vnm, &sw_if_index,
1883 else if (unformat (line_input, "external %U",
1884 unformat_vnet_sw_interface, vnm, &sw_if_index))
1886 else if (unformat (line_input, "vrf %u", &vrf_id))
1888 else if (unformat (line_input, "%U", unformat_snat_protocol, &proto))
1890 else if (unformat (line_input, "del"))
1893 return clib_error_return (0, "unknown input: '%U'",
1894 format_unformat_error, line_input);
1896 unformat_free (line_input);
1898 rv = snat_add_static_mapping(l_addr, e_addr, (u16) l_port, (u16) e_port,
1899 vrf_id, addr_only, sw_if_index, proto, is_add);
1903 case VNET_API_ERROR_INVALID_VALUE:
1904 return clib_error_return (0, "External port already in use.");
1906 case VNET_API_ERROR_NO_SUCH_ENTRY:
1908 return clib_error_return (0, "External addres must be allocated.");
1910 return clib_error_return (0, "Mapping not exist.");
1912 case VNET_API_ERROR_NO_SUCH_FIB:
1913 return clib_error_return (0, "No such VRF id.");
1914 case VNET_API_ERROR_VALUE_EXIST:
1915 return clib_error_return (0, "Mapping already exist.");
1925 * @cliexstart{snat add static mapping}
1926 * Static mapping allows hosts on the external network to initiate connection
1927 * to to the local network host.
1928 * To create static mapping between local host address 10.0.0.3 port 6303 and
1929 * external address 4.4.4.4 port 3606 use:
1930 * vpp# snat add static mapping local 10.0.0.3 6303 external 4.4.4.4 3606
1931 * If not runnig "static mapping only" S-NAT plugin mode use before:
1932 * vpp# snat add address 4.4.4.4
1933 * To create static mapping between local and external address use:
1934 * vpp# snat add static mapping local 10.0.0.3 external 4.4.4.4
1937 VLIB_CLI_COMMAND (add_static_mapping_command, static) = {
1938 .path = "snat add static mapping",
1939 .function = add_static_mapping_command_fn,
1941 "snat add static mapping local <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]",
1944 static clib_error_t *
1945 set_workers_command_fn (vlib_main_t * vm,
1946 unformat_input_t * input,
1947 vlib_cli_command_t * cmd)
1949 unformat_input_t _line_input, *line_input = &_line_input;
1953 /* Get a line of input. */
1954 if (!unformat_user (input, unformat_line_input, line_input))
1957 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1959 if (unformat (line_input, "%U", unformat_bitmap_list, &bitmap))
1962 return clib_error_return (0, "unknown input '%U'",
1963 format_unformat_error, input);
1965 unformat_free (line_input);
1968 return clib_error_return (0, "List of workers must be specified.");
1970 rv = snat_set_workers(bitmap);
1972 clib_bitmap_free (bitmap);
1976 case VNET_API_ERROR_INVALID_WORKER:
1977 return clib_error_return (0, "Invalid worker(s).");
1979 case VNET_API_ERROR_FEATURE_DISABLED:
1980 return clib_error_return (0,
1981 "Supported only if 2 or more workes available.");
1992 * @cliexstart{set snat workers}
1993 * Set SNAT workers if 2 or more workers available, use:
1994 * vpp# set snat workers 0-2,5
1997 VLIB_CLI_COMMAND (set_workers_command, static) = {
1998 .path = "set snat workers",
1999 .function = set_workers_command_fn,
2001 "set snat workers <workers-list>",
2004 static clib_error_t *
2005 snat_ipfix_logging_enable_disable_command_fn (vlib_main_t * vm,
2006 unformat_input_t * input,
2007 vlib_cli_command_t * cmd)
2009 unformat_input_t _line_input, *line_input = &_line_input;
2015 /* Get a line of input. */
2016 if (!unformat_user (input, unformat_line_input, line_input))
2019 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2021 if (unformat (line_input, "domain %d", &domain_id))
2023 else if (unformat (line_input, "src-port %d", &src_port))
2025 else if (unformat (line_input, "disable"))
2028 return clib_error_return (0, "unknown input '%U'",
2029 format_unformat_error, input);
2031 unformat_free (line_input);
2033 rv = snat_ipfix_logging_enable_disable (enable, domain_id, (u16) src_port);
2036 return clib_error_return (0, "ipfix logging enable failed");
2043 * @cliexstart{snat ipfix logging}
2044 * To enable SNAT IPFIX logging use:
2045 * vpp# snat ipfix logging
2046 * To set IPFIX exporter use:
2047 * vpp# set ipfix exporter collector 10.10.10.3 src 10.10.10.1
2050 VLIB_CLI_COMMAND (snat_ipfix_logging_enable_disable_command, static) = {
2051 .path = "snat ipfix logging",
2052 .function = snat_ipfix_logging_enable_disable_command_fn,
2053 .short_help = "snat ipfix logging [domain <domain-id>] [src-port <port>] [disable]",
2056 static clib_error_t *
2057 snat_config (vlib_main_t * vm, unformat_input_t * input)
2059 snat_main_t * sm = &snat_main;
2060 u32 translation_buckets = 1024;
2061 u32 translation_memory_size = 128<<20;
2062 u32 user_buckets = 128;
2063 u32 user_memory_size = 64<<20;
2064 u32 max_translations_per_user = 100;
2065 u32 outside_vrf_id = 0;
2066 u32 inside_vrf_id = 0;
2067 u32 static_mapping_buckets = 1024;
2068 u32 static_mapping_memory_size = 64<<20;
2069 u8 static_mapping_only = 0;
2070 u8 static_mapping_connection_tracking = 0;
2071 vlib_thread_main_t *tm = vlib_get_thread_main ();
2073 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
2075 if (unformat (input, "translation hash buckets %d", &translation_buckets))
2077 else if (unformat (input, "translation hash memory %d",
2078 &translation_memory_size));
2079 else if (unformat (input, "user hash buckets %d", &user_buckets))
2081 else if (unformat (input, "user hash memory %d",
2084 else if (unformat (input, "max translations per user %d",
2085 &max_translations_per_user))
2087 else if (unformat (input, "outside VRF id %d",
2090 else if (unformat (input, "inside VRF id %d",
2093 else if (unformat (input, "static mapping only"))
2095 static_mapping_only = 1;
2096 if (unformat (input, "connection tracking"))
2097 static_mapping_connection_tracking = 1;
2100 return clib_error_return (0, "unknown input '%U'",
2101 format_unformat_error, input);
2104 /* for show commands, etc. */
2105 sm->translation_buckets = translation_buckets;
2106 sm->translation_memory_size = translation_memory_size;
2107 sm->user_buckets = user_buckets;
2108 sm->user_memory_size = user_memory_size;
2109 sm->max_translations_per_user = max_translations_per_user;
2110 sm->outside_vrf_id = outside_vrf_id;
2111 sm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
2113 sm->inside_vrf_id = inside_vrf_id;
2114 sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
2116 sm->static_mapping_only = static_mapping_only;
2117 sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
2119 if (!static_mapping_only ||
2120 (static_mapping_only && static_mapping_connection_tracking))
2122 clib_bihash_init_8_8 (&sm->worker_by_in, "worker-by-in", user_buckets,
2125 clib_bihash_init_8_8 (&sm->worker_by_out, "worker-by-out", user_buckets,
2128 vec_validate (sm->per_thread_data, tm->n_vlib_mains - 1);
2130 clib_bihash_init_8_8 (&sm->in2out, "in2out", translation_buckets,
2131 translation_memory_size);
2133 clib_bihash_init_8_8 (&sm->out2in, "out2in", translation_buckets,
2134 translation_memory_size);
2136 clib_bihash_init_8_8 (&sm->user_hash, "users", user_buckets,
2139 clib_bihash_init_8_8 (&sm->static_mapping_by_local,
2140 "static_mapping_by_local", static_mapping_buckets,
2141 static_mapping_memory_size);
2143 clib_bihash_init_8_8 (&sm->static_mapping_by_external,
2144 "static_mapping_by_external", static_mapping_buckets,
2145 static_mapping_memory_size);
2149 VLIB_CONFIG_FUNCTION (snat_config, "snat");
2151 u8 * format_snat_key (u8 * s, va_list * args)
2153 snat_session_key_t * key = va_arg (*args, snat_session_key_t *);
2154 char * protocol_string = "unknown";
2155 static char *protocol_strings[] = {
2161 if (key->protocol < ARRAY_LEN(protocol_strings))
2162 protocol_string = protocol_strings[key->protocol];
2164 s = format (s, "%U proto %s port %d fib %d",
2165 format_ip4_address, &key->addr, protocol_string,
2166 clib_net_to_host_u16 (key->port), key->fib_index);
2170 u8 * format_snat_session (u8 * s, va_list * args)
2172 snat_main_t * sm __attribute__((unused)) = va_arg (*args, snat_main_t *);
2173 snat_session_t * sess = va_arg (*args, snat_session_t *);
2175 s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
2176 s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
2177 s = format (s, " last heard %.2f\n", sess->last_heard);
2178 s = format (s, " total pkts %d, total bytes %lld\n",
2179 sess->total_pkts, sess->total_bytes);
2180 if (snat_is_session_static (sess))
2181 s = format (s, " static translation\n");
2183 s = format (s, " dynamic translation\n");
2188 u8 * format_snat_user (u8 * s, va_list * args)
2190 snat_main_per_thread_data_t * sm = va_arg (*args, snat_main_per_thread_data_t *);
2191 snat_user_t * u = va_arg (*args, snat_user_t *);
2192 int verbose = va_arg (*args, int);
2193 dlist_elt_t * head, * elt;
2194 u32 elt_index, head_index;
2196 snat_session_t * sess;
2198 s = format (s, "%U: %d dynamic translations, %d static translations\n",
2199 format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
2204 if (u->nsessions || u->nstaticsessions)
2206 head_index = u->sessions_per_user_list_head_index;
2207 head = pool_elt_at_index (sm->list_pool, head_index);
2209 elt_index = head->next;
2210 elt = pool_elt_at_index (sm->list_pool, elt_index);
2211 session_index = elt->value;
2213 while (session_index != ~0)
2215 sess = pool_elt_at_index (sm->sessions, session_index);
2217 s = format (s, " %U\n", format_snat_session, sm, sess);
2219 elt_index = elt->next;
2220 elt = pool_elt_at_index (sm->list_pool, elt_index);
2221 session_index = elt->value;
2228 u8 * format_snat_static_mapping (u8 * s, va_list * args)
2230 snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
2233 s = format (s, "local %U external %U vrf %d",
2234 format_ip4_address, &m->local_addr,
2235 format_ip4_address, &m->external_addr,
2238 s = format (s, "%U local %U:%d external %U:%d vrf %d",
2239 format_snat_protocol, m->proto,
2240 format_ip4_address, &m->local_addr, m->local_port,
2241 format_ip4_address, &m->external_addr, m->external_port,
2247 static clib_error_t *
2248 show_snat_command_fn (vlib_main_t * vm,
2249 unformat_input_t * input,
2250 vlib_cli_command_t * cmd)
2253 snat_main_t * sm = &snat_main;
2255 snat_static_mapping_t *m;
2256 snat_interface_t *i;
2257 snat_address_t * ap;
2258 vnet_main_t *vnm = vnet_get_main();
2259 snat_main_per_thread_data_t *tsm;
2260 u32 users_num = 0, sessions_num = 0, *worker, *sw_if_index;
2263 if (unformat (input, "detail"))
2265 else if (unformat (input, "verbose"))
2268 if (sm->static_mapping_only)
2270 if (sm->static_mapping_connection_tracking)
2271 vlib_cli_output (vm, "SNAT mode: static mapping only connection "
2274 vlib_cli_output (vm, "SNAT mode: static mapping only");
2278 vlib_cli_output (vm, "SNAT mode: dynamic translations enabled");
2283 pool_foreach (i, sm->interfaces,
2285 vlib_cli_output (vm, "%U %s", format_vnet_sw_interface_name, vnm,
2286 vnet_get_sw_interface (vnm, i->sw_if_index),
2287 i->is_inside ? "in" : "out");
2290 if (vec_len (sm->auto_add_sw_if_indices))
2292 vlib_cli_output (vm, "SNAT pool addresses interfaces:");
2293 vec_foreach (sw_if_index, sm->auto_add_sw_if_indices)
2295 vlib_cli_output (vm, "%U", format_vnet_sw_interface_name, vnm,
2296 vnet_get_sw_interface (vnm, *sw_if_index));
2300 vec_foreach (ap, sm->addresses)
2302 vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr);
2303 #define _(N, i, n, s) \
2304 vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s);
2305 foreach_snat_protocol
2310 if (sm->num_workers > 1)
2312 vlib_cli_output (vm, "%d workers", vec_len (sm->workers));
2315 vec_foreach (worker, sm->workers)
2317 vlib_worker_thread_t *w =
2318 vlib_worker_threads + *worker + sm->first_worker_index;
2319 vlib_cli_output (vm, " %s", w->name);
2324 if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
2326 vlib_cli_output (vm, "%d static mappings",
2327 pool_elts (sm->static_mappings));
2331 pool_foreach (m, sm->static_mappings,
2333 vlib_cli_output (vm, "%U", format_snat_static_mapping, m);
2339 vec_foreach (tsm, sm->per_thread_data)
2341 users_num += pool_elts (tsm->users);
2342 sessions_num += pool_elts (tsm->sessions);
2345 vlib_cli_output (vm, "%d users, %d outside addresses, %d active sessions,"
2346 " %d static mappings",
2348 vec_len (sm->addresses),
2350 pool_elts (sm->static_mappings));
2354 vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->in2out,
2356 vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->out2in,
2358 vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_in,
2360 vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_out,
2362 vec_foreach_index (j, sm->per_thread_data)
2364 tsm = vec_elt_at_index (sm->per_thread_data, j);
2366 if (pool_elts (tsm->users) == 0)
2369 vlib_worker_thread_t *w = vlib_worker_threads + j;
2370 vlib_cli_output (vm, "Thread %d (%s at lcore %u):", j, w->name,
2372 vlib_cli_output (vm, " %d list pool elements",
2373 pool_elts (tsm->list_pool));
2375 pool_foreach (u, tsm->users,
2377 vlib_cli_output (vm, " %U", format_snat_user, tsm, u,
2382 if (pool_elts (sm->static_mappings))
2384 vlib_cli_output (vm, "static mappings:");
2385 pool_foreach (m, sm->static_mappings,
2387 vlib_cli_output (vm, "%U", format_snat_static_mapping, m);
2396 VLIB_CLI_COMMAND (show_snat_command, static) = {
2397 .path = "show snat",
2398 .short_help = "show snat",
2399 .function = show_snat_command_fn,
2404 snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
2407 ip4_address_t * address,
2409 u32 if_address_index,
2412 snat_main_t *sm = &snat_main;
2413 snat_static_map_resolve_t *rp;
2414 u32 *indices_to_delete = 0;
2418 for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++)
2420 if (sw_if_index == sm->auto_add_sw_if_indices[i])
2424 /* Don't trip over lease renewal, static config */
2425 for (j = 0; j < vec_len(sm->addresses); j++)
2426 if (sm->addresses[j].addr.as_u32 == address->as_u32)
2429 snat_add_address (sm, address);
2430 /* Scan static map resolution vector */
2431 for (j = 0; j < vec_len (sm->to_resolve); j++)
2433 rp = sm->to_resolve + j;
2434 /* On this interface? */
2435 if (rp->sw_if_index == sw_if_index)
2437 /* Add the static mapping */
2438 rv = snat_add_static_mapping (rp->l_addr,
2444 ~0 /* sw_if_index */,
2448 clib_warning ("snat_add_static_mapping returned %d",
2450 vec_add1 (indices_to_delete, j);
2453 /* If we resolved any of the outstanding static mappings */
2454 if (vec_len(indices_to_delete))
2457 for (j = vec_len(indices_to_delete)-1; j >= 0; j--)
2458 vec_delete(sm->to_resolve, 1, j);
2459 vec_free(indices_to_delete);
2465 (void) snat_del_address(sm, address[0], 1);
2473 static int snat_add_interface_address (snat_main_t *sm,
2477 ip4_main_t * ip4_main = sm->ip4_main;
2478 ip4_address_t * first_int_addr;
2479 snat_static_map_resolve_t *rp;
2480 u32 *indices_to_delete = 0;
2483 first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index,
2484 0 /* just want the address*/);
2486 for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++)
2488 if (sm->auto_add_sw_if_indices[i] == sw_if_index)
2492 /* if have address remove it */
2494 (void) snat_del_address (sm, first_int_addr[0], 1);
2497 for (j = 0; j < vec_len (sm->to_resolve); j++)
2499 rp = sm->to_resolve + j;
2500 if (rp->sw_if_index == sw_if_index)
2501 vec_add1 (indices_to_delete, j);
2503 if (vec_len(indices_to_delete))
2505 for (j = vec_len(indices_to_delete)-1; j >= 0; j--)
2506 vec_del1(sm->to_resolve, j);
2507 vec_free(indices_to_delete);
2510 vec_del1(sm->auto_add_sw_if_indices, i);
2513 return VNET_API_ERROR_VALUE_EXIST;
2520 return VNET_API_ERROR_NO_SUCH_ENTRY;
2522 /* add to the auto-address list */
2523 vec_add1(sm->auto_add_sw_if_indices, sw_if_index);
2525 /* If the address is already bound - or static - add it now */
2527 snat_add_address (sm, first_int_addr);
2532 static clib_error_t *
2533 snat_add_interface_address_command_fn (vlib_main_t * vm,
2534 unformat_input_t * input,
2535 vlib_cli_command_t * cmd)
2537 snat_main_t *sm = &snat_main;
2538 unformat_input_t _line_input, *line_input = &_line_input;
2543 /* Get a line of input. */
2544 if (!unformat_user (input, unformat_line_input, line_input))
2547 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2549 if (unformat (line_input, "%U", unformat_vnet_sw_interface,
2550 sm->vnet_main, &sw_if_index))
2552 else if (unformat (line_input, "del"))
2555 return clib_error_return (0, "unknown input '%U'",
2556 format_unformat_error, line_input);
2559 rv = snat_add_interface_address (sm, sw_if_index, is_del);
2567 return clib_error_return (0, "snat_add_interface_address returned %d",
2573 VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = {
2574 .path = "snat add interface address",
2575 .short_help = "snat add interface address <interface> [del]",
2576 .function = snat_add_interface_address_command_fn,