2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 * @brief NAT44 endpoint-dependent inside to outside network translation
20 #include <vlib/vlib.h>
21 #include <vnet/vnet.h>
22 #include <vnet/pg/pg.h>
23 #include <vnet/ip/ip.h>
24 #include <vnet/ethernet/ethernet.h>
25 #include <vnet/fib/ip4_fib.h>
26 #include <vnet/udp/udp.h>
27 #include <vppinfra/error.h>
29 #include <nat/nat_ipfix_logging.h>
30 #include <nat/nat_inlines.h>
31 #include <nat/nat44/inlines.h>
32 #include <nat/nat_syslog.h>
33 #include <nat/nat_ha.h>
35 static char *nat_in2out_ed_error_strings[] = {
36 #define _(sym,string) string,
37 foreach_nat_in2out_ed_error
47 } nat_in2out_ed_trace_t;
50 format_nat_in2out_ed_trace (u8 * s, va_list * args)
52 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
53 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
54 nat_in2out_ed_trace_t *t = va_arg (*args, nat_in2out_ed_trace_t *);
58 t->is_slow_path ? "NAT44_IN2OUT_ED_SLOW_PATH" :
59 "NAT44_IN2OUT_ED_FAST_PATH";
61 s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag,
62 t->sw_if_index, t->next_index, t->session_index);
67 #ifndef CLIB_MARCH_VARIANT
69 nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg)
71 snat_main_t *sm = &snat_main;
72 nat44_is_idle_session_ctx_t *ctx = arg;
74 u64 sess_timeout_time;
77 ip4_address_t *l_addr, *r_addr;
79 clib_bihash_kv_16_8_t ed_kv;
82 snat_session_key_t key;
83 snat_main_per_thread_data_t *tsm = vec_elt_at_index (sm->per_thread_data,
86 s = pool_elt_at_index (tsm->sessions, kv->value);
87 sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s);
88 if (ctx->now >= sess_timeout_time)
90 if (is_fwd_bypass_session (s))
93 l_addr = &s->out2in.addr;
94 r_addr = &s->ext_host_addr;
95 fib_index = s->out2in.fib_index;
96 if (snat_is_unk_proto_session (s))
98 proto = s->in2out.port;
104 proto = snat_proto_to_ip_proto (s->in2out.protocol);
105 l_port = s->out2in.port;
106 r_port = s->ext_host_port;
108 make_ed_kv (l_addr, r_addr, proto, fib_index, l_port, r_port, ~0ULL,
110 if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0))
111 nat_elog_warn ("out2in_ed key del failed");
113 if (snat_is_unk_proto_session (s))
116 snat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
117 s->in2out.addr.as_u32,
118 s->out2in.addr.as_u32,
122 s->in2out.fib_index);
124 nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
125 &s->in2out.addr, s->in2out.port,
126 &s->ext_host_nat_addr, s->ext_host_nat_port,
127 &s->out2in.addr, s->out2in.port,
128 &s->ext_host_addr, s->ext_host_port,
129 s->in2out.protocol, is_twice_nat_session (s));
131 nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
132 s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
135 if (is_twice_nat_session (s))
137 for (i = 0; i < vec_len (sm->twice_nat_addresses); i++)
139 key.protocol = s->in2out.protocol;
140 key.port = s->ext_host_nat_port;
141 a = sm->twice_nat_addresses + i;
142 if (a->addr.as_u32 == s->ext_host_nat_addr.as_u32)
144 snat_free_outside_address_and_port (sm->twice_nat_addresses,
152 if (snat_is_session_static (s))
155 snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
158 nat44_ed_delete_session (sm, s, ctx->thread_index, 1);
167 icmp_in2out_ed_slow_path (snat_main_t * sm, vlib_buffer_t * b0,
168 ip4_header_t * ip0, icmp46_header_t * icmp0,
169 u32 sw_if_index0, u32 rx_fib_index0,
170 vlib_node_runtime_t * node, u32 next0, f64 now,
171 u32 thread_index, snat_session_t ** p_s0)
173 next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
174 next0, thread_index, p_s0, 0);
175 snat_session_t *s0 = *p_s0;
176 if (PREDICT_TRUE (next0 != NAT_NEXT_DROP && s0))
179 nat44_session_update_counters (s0, now,
180 vlib_buffer_length_in_chain
181 (sm->vlib_main, b0), thread_index);
182 /* Per-user LRU list maintenance */
183 nat44_session_update_lru (sm, s0, thread_index);
188 static_always_inline u16
189 snat_random_port (u16 min, u16 max)
191 snat_main_t *sm = &snat_main;
192 return min + random_u32 (&sm->random_seed) /
193 (random_u32_max () / (max - min + 1) + 1);
197 nat_ed_alloc_addr_and_port (snat_main_t * sm, u32 rx_fib_index,
198 u32 snat_proto, u32 thread_index,
199 ip4_address_t r_addr, u16 r_port, u8 proto,
200 u16 port_per_thread, u32 snat_thread_index,
202 ip4_address_t * allocated_addr,
203 u16 * allocated_port,
204 clib_bihash_kv_16_8_t * out2in_ed_kv)
207 snat_address_t *a, *ga = 0;
209 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
211 const u16 port_thread_offset = (port_per_thread * snat_thread_index) + 1024;
213 for (i = 0; i < vec_len (sm->addresses); i++)
215 a = sm->addresses + i;
218 #define _(N, j, n, unused) \
219 case SNAT_PROTOCOL_##N: \
220 if (a->fib_index == rx_fib_index) \
222 u16 port = snat_random_port (1, port_per_thread); \
223 u16 attempts = port_per_thread; \
224 while (attempts > 0) \
227 portnum = port_thread_offset + port; \
228 make_ed_kv (&a->addr, &r_addr, proto, s->out2in.fib_index, \
229 clib_host_to_net_u16 (portnum), r_port, \
230 s - tsm->sessions, out2in_ed_kv); \
231 int rv = clib_bihash_add_del_16_8 (&tsm->out2in_ed, out2in_ed_kv, \
235 ++a->busy_##n##_port_refcounts[portnum]; \
236 a->busy_##n##_ports_per_thread[thread_index]++; \
237 a->busy_##n##_ports++; \
238 *allocated_addr = a->addr; \
239 *allocated_port = clib_host_to_net_u16 (portnum); \
242 port = (port + 1) % port_per_thread; \
245 else if (a->fib_index == ~0) \
251 foreach_snat_protocol;
253 nat_elog_info ("unknown protocol");
260 /* fake fib_index to reuse macro */
265 foreach_snat_protocol;
267 nat_elog_info ("unknown protocol");
274 /* Totally out of translations to use... */
275 snat_ipfix_logging_addresses_exhausted (thread_index, 0);
280 slow_path_ed (snat_main_t * sm,
282 ip4_address_t l_addr,
283 ip4_address_t r_addr,
288 snat_session_t ** sessionp,
289 vlib_node_runtime_t * node, u32 next, u32 thread_index, f64 now)
291 snat_session_t *s = NULL;
292 snat_session_key_t key0, key1;
293 lb_nat_type_t lb = 0;
294 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
295 u32 snat_proto = ip_proto_to_snat_proto (proto);
296 nat_outside_fib_t *outside_fib;
297 fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
298 clib_bihash_kv_16_8_t out2in_ed_kv;
299 bool out2in_ed_inserted = false;
300 ip4_address_t allocated_addr;
304 .fp_proto = FIB_PROTOCOL_IP4,
306 .fp_addr = {.ip4.as_u32 = r_addr.as_u32,},
308 nat44_is_idle_session_ctx_t ctx;
310 if (PREDICT_TRUE (snat_proto == SNAT_PROTOCOL_TCP))
314 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
316 b->error = node->errors[NAT_IN2OUT_ED_ERROR_NON_SYN];
317 return NAT_NEXT_DROP;
321 // TODO: based on fib index do a lookup
323 (nat44_ed_maximum_sessions_exceeded (sm, rx_fib_index, thread_index)))
325 if (!nat_global_lru_free_one (sm, thread_index, now))
327 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
328 nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
329 nat_elog_notice ("maximum sessions exceeded");
330 return NAT_NEXT_DROP;
336 key1.protocol = key0.protocol = snat_proto;
337 key0.fib_index = rx_fib_index;
338 key1.fib_index = sm->outside_fib_index;
340 /* First try to match static mapping by local address and port */
341 if (snat_static_mapping_match
342 (sm, key0, &key1, 0, 0, 0, &lb, 0, &identity_nat))
344 s = nat_ed_session_alloc (sm, thread_index, now);
347 nat_elog_warn ("create NAT session failed");
348 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
351 switch (vec_len (sm->outside_fibs))
354 s->out2in.fib_index = sm->outside_fib_index;
357 s->out2in.fib_index = sm->outside_fibs[0].fib_index;
361 vec_foreach (outside_fib, sm->outside_fibs)
363 fei = fib_table_lookup (outside_fib->fib_index, &pfx);
364 if (FIB_NODE_INDEX_INVALID != fei)
366 if (fib_entry_get_resolving_interface (fei) != ~0)
368 s->out2in.fib_index = outside_fib->fib_index;
377 /* Try to create dynamic translation */
378 if (nat_ed_alloc_addr_and_port (sm, rx_fib_index, snat_proto,
379 thread_index, r_addr, r_port, proto,
381 tsm->snat_thread_index, s,
383 &allocated_port, &out2in_ed_kv))
385 nat_elog_notice ("addresses exhausted");
386 b->error = node->errors[NAT_IN2OUT_ED_ERROR_OUT_OF_PORTS];
390 out2in_ed_inserted = true;
391 key1.addr = allocated_addr;
392 key1.port = allocated_port;
396 if (PREDICT_FALSE (identity_nat))
401 s = nat_ed_session_alloc (sm, thread_index, now);
404 nat_elog_warn ("create NAT session failed");
405 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
408 switch (vec_len (sm->outside_fibs))
411 s->out2in.fib_index = sm->outside_fib_index;
414 s->out2in.fib_index = sm->outside_fibs[0].fib_index;
418 vec_foreach (outside_fib, sm->outside_fibs)
420 fei = fib_table_lookup (outside_fib->fib_index, &pfx);
421 if (FIB_NODE_INDEX_INVALID != fei)
423 if (fib_entry_get_resolving_interface (fei) != ~0)
425 s->out2in.fib_index = outside_fib->fib_index;
434 s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
437 make_ed_kv (&key1.addr, &r_addr, proto,
438 s->out2in.fib_index, key1.port, r_port, s - tsm->sessions,
440 if (clib_bihash_add_or_overwrite_stale_16_8
441 (&tsm->out2in_ed, &out2in_ed_kv, nat44_o2i_ed_is_idle_session_cb,
443 nat_elog_notice ("out2in-ed key add failed");
444 out2in_ed_inserted = true;
448 s->flags |= SNAT_SESSION_FLAG_LOAD_BALANCING;
449 s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
450 s->ext_host_addr = r_addr;
451 s->ext_host_port = r_port;
454 s->out2in.protocol = key0.protocol;
456 clib_bihash_kv_16_8_t in2out_ed_kv;
457 make_ed_kv (&l_addr, &r_addr, proto, rx_fib_index, l_port, r_port,
458 s - tsm->sessions, &in2out_ed_kv);
460 ctx.thread_index = thread_index;
461 if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->in2out_ed, &in2out_ed_kv,
462 nat44_i2o_ed_is_idle_session_cb,
464 nat_elog_notice ("in2out-ed key add failed");
469 snat_ipfix_logging_nat44_ses_create (thread_index,
470 s->in2out.addr.as_u32,
471 s->out2in.addr.as_u32,
474 s->out2in.port, s->in2out.fib_index);
476 nat_syslog_nat44_sadd (s->user_index, s->in2out.fib_index,
477 &s->in2out.addr, s->in2out.port,
478 &s->ext_host_nat_addr, s->ext_host_nat_port,
479 &s->out2in.addr, s->out2in.port,
480 &s->ext_host_addr, s->ext_host_port,
481 s->in2out.protocol, 0);
483 nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
484 s->out2in.port, &s->ext_host_addr, s->ext_host_port,
485 &s->ext_host_nat_addr, s->ext_host_nat_port,
486 s->in2out.protocol, s->in2out.fib_index, s->flags,
491 if (out2in_ed_inserted)
493 if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &out2in_ed_kv, 0))
494 nat_elog_notice ("out2in-ed key del failed");
498 nat_free_session_data (sm, s, thread_index, 0);
499 nat44_ed_delete_session (sm, s, thread_index, 1);
501 return NAT_NEXT_DROP;
504 static_always_inline int
505 nat44_ed_not_translate (snat_main_t * sm, vlib_node_runtime_t * node,
506 u32 sw_if_index, ip4_header_t * ip, u32 proto,
507 u32 rx_fib_index, u32 thread_index)
509 udp_header_t *udp = ip4_next_header (ip);
510 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
511 clib_bihash_kv_16_8_t kv, value;
512 snat_session_key_t key0, key1;
514 make_ed_kv (&ip->dst_address, &ip->src_address, ip->protocol,
515 sm->outside_fib_index, udp->dst_port, udp->src_port, ~0ULL,
518 /* NAT packet aimed at external address if has active sessions */
519 if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
521 key0.addr = ip->dst_address;
522 key0.port = udp->dst_port;
523 key0.protocol = proto;
524 key0.fib_index = sm->outside_fib_index;
525 /* or is static mappings */
526 if (!snat_static_mapping_match (sm, key0, &key1, 1, 0, 0, 0, 0, 0))
532 if (sm->forwarding_enabled)
535 return snat_not_translate_fast (sm, node, sw_if_index, ip, proto,
539 static_always_inline int
540 nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
541 u32 thread_index, f64 now,
542 vlib_main_t * vm, vlib_buffer_t * b)
544 clib_bihash_kv_16_8_t kv, value;
545 snat_session_t *s = 0;
546 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
548 if (!sm->forwarding_enabled)
551 if (ip->protocol == IP_PROTOCOL_ICMP)
553 if (get_icmp_i2o_ed_key (b, ip, 0, ~0ULL, 0, 0, 0, &kv))
556 else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
558 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol, 0,
559 vnet_buffer (b)->ip.reass.l4_src_port,
560 vnet_buffer (b)->ip.reass.l4_dst_port, ~0ULL, &kv);
564 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol, 0, 0,
568 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
570 s = pool_elt_at_index (tsm->sessions, value.value);
571 if (is_fwd_bypass_session (s))
573 if (ip->protocol == IP_PROTOCOL_TCP)
575 if (nat44_set_tcp_session_state_i2o
576 (sm, now, s, b, thread_index))
580 nat44_session_update_counters (s, now,
581 vlib_buffer_length_in_chain (vm, b),
583 /* Per-user LRU list maintenance */
584 nat44_session_update_lru (sm, s, thread_index);
594 static_always_inline int
595 nat44_ed_not_translate_output_feature (snat_main_t * sm, ip4_header_t * ip,
596 u16 src_port, u16 dst_port,
597 u32 thread_index, u32 rx_sw_if_index,
600 clib_bihash_kv_16_8_t kv, value;
601 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
604 u32 rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (rx_sw_if_index);
605 u32 tx_fib_index = ip4_fib_table_get_index_for_sw_if_index (tx_sw_if_index);
608 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol,
609 tx_fib_index, src_port, dst_port, ~0ULL, &kv);
610 if (!clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
612 s = pool_elt_at_index (tsm->sessions, value.value);
613 if (nat44_is_ses_closed (s))
615 nat_free_session_data (sm, s, thread_index, 0);
616 nat44_ed_delete_session (sm, s, thread_index, 1);
619 s->flags |= SNAT_SESSION_FLAG_OUTPUT_FEATURE;
624 make_ed_kv (&ip->dst_address, &ip->src_address, ip->protocol,
625 rx_fib_index, dst_port, src_port, ~0ULL, &kv);
626 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
628 s = pool_elt_at_index (tsm->sessions, value.value);
629 if (is_fwd_bypass_session (s))
634 pool_foreach (i, sm->output_feature_interfaces,
636 if ((nat_interface_is_inside (i)) && (rx_sw_if_index == i->sw_if_index))
646 #ifndef CLIB_MARCH_VARIANT
648 icmp_match_in2out_ed (snat_main_t * sm, vlib_node_runtime_t * node,
649 u32 thread_index, vlib_buffer_t * b, ip4_header_t * ip,
650 u8 * p_proto, snat_session_key_t * p_value,
651 u8 * p_dont_translate, void *d, void *e)
655 snat_session_t *s = 0;
656 u8 dont_translate = 0;
657 clib_bihash_kv_16_8_t kv, value;
660 u16 l_port = 0, r_port = 0; // initialize to workaround gcc warning
661 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
663 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
664 rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
667 get_icmp_i2o_ed_key (b, ip, rx_fib_index, ~0ULL, p_proto, &l_port,
671 b->error = node->errors[err];
672 next = NAT_NEXT_DROP;
676 if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
678 if (vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0)
681 (nat44_ed_not_translate_output_feature
682 (sm, ip, l_port, r_port, thread_index,
683 sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_TX])))
691 if (PREDICT_FALSE (nat44_ed_not_translate (sm, node, sw_if_index,
692 ip, SNAT_PROTOCOL_ICMP,
702 (icmp_type_is_error_message
703 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
705 b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
706 next = NAT_NEXT_DROP;
711 slow_path_ed (sm, b, ip->src_address, ip->dst_address, l_port, r_port,
712 ip->protocol, rx_fib_index, &s, node, next,
713 thread_index, vlib_time_now (sm->vlib_main));
715 if (PREDICT_FALSE (next == NAT_NEXT_DROP))
727 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
729 && vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
731 && !icmp_type_is_error_message (vnet_buffer (b)->ip.
732 reass.icmp_type_or_tcp_flags)))
734 b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
735 next = NAT_NEXT_DROP;
739 s = pool_elt_at_index (tsm->sessions, value.value);
743 *p_value = s->out2in;
744 *p_dont_translate = dont_translate;
746 *(snat_session_t **) d = s;
751 static snat_session_t *
752 nat44_ed_in2out_unknown_proto (snat_main_t * sm,
758 vlib_main_t * vm, vlib_node_runtime_t * node)
760 clib_bihash_kv_8_8_t kv, value;
761 clib_bihash_kv_16_8_t s_kv, s_value;
762 snat_static_mapping_t *m;
763 u32 old_addr, new_addr = 0;
765 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
767 u32 outside_fib_index = sm->outside_fib_index;
770 nat_outside_fib_t *outside_fib;
771 fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
773 .fp_proto = FIB_PROTOCOL_IP4,
776 .ip4.as_u32 = ip->dst_address.as_u32,
780 switch (vec_len (sm->outside_fibs))
783 outside_fib_index = sm->outside_fib_index;
786 outside_fib_index = sm->outside_fibs[0].fib_index;
790 vec_foreach (outside_fib, sm->outside_fibs)
792 fei = fib_table_lookup (outside_fib->fib_index, &pfx);
793 if (FIB_NODE_INDEX_INVALID != fei)
795 if (fib_entry_get_resolving_interface (fei) != ~0)
797 outside_fib_index = outside_fib->fib_index;
805 old_addr = ip->src_address.as_u32;
807 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol,
808 rx_fib_index, 0, 0, ~0ULL, &s_kv);
810 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &s_kv, &s_value))
812 s = pool_elt_at_index (tsm->sessions, s_value.value);
813 new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
818 (nat44_ed_maximum_sessions_exceeded
819 (sm, rx_fib_index, thread_index)))
821 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
822 nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
823 nat_elog_notice ("maximum sessions exceeded");
827 make_sm_kv (&kv, &ip->src_address, 0, rx_fib_index, 0);
829 /* Try to find static mapping first */
830 if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
832 m = pool_elt_at_index (sm->static_mappings, value.value);
833 new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
840 pool_foreach (s, tsm->sessions, {
841 if (s->ext_host_addr.as_u32 == ip->dst_address.as_u32)
843 new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
845 make_ed_kv (&s->out2in.addr, &ip->dst_address, ip->protocol,
846 outside_fib_index, 0, 0, ~0ULL, &s_kv);
847 if (clib_bihash_search_16_8 (&tsm->out2in_ed, &s_kv, &s_value))
855 for (i = 0; i < vec_len (sm->addresses); i++)
857 make_ed_kv (&sm->addresses[i].addr, &ip->dst_address,
858 ip->protocol, outside_fib_index, 0, 0, ~0ULL,
860 if (clib_bihash_search_16_8 (&tsm->out2in_ed, &s_kv, &s_value))
862 new_addr = ip->src_address.as_u32 =
863 sm->addresses[i].addr.as_u32;
871 s = nat_ed_session_alloc (sm, thread_index, now);
874 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
875 nat_elog_warn ("create NAT session failed");
879 s->ext_host_addr.as_u32 = ip->dst_address.as_u32;
880 s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
881 s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
882 s->out2in.addr.as_u32 = new_addr;
883 s->out2in.fib_index = outside_fib_index;
884 s->in2out.addr.as_u32 = old_addr;
885 s->in2out.fib_index = rx_fib_index;
886 s->in2out.port = s->out2in.port = ip->protocol;
888 s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
890 /* Add to lookup tables */
891 make_ed_kv (&s->in2out.addr, &ip->dst_address, ip->protocol,
892 rx_fib_index, 0, 0, s - tsm->sessions, &s_kv);
893 if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &s_kv, 1))
894 nat_elog_notice ("in2out key add failed");
896 make_ed_kv (&s->out2in.addr, &ip->dst_address, ip->protocol,
897 outside_fib_index, 0, 0, s - tsm->sessions, &s_kv);
898 if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &s_kv, 1))
899 nat_elog_notice ("out2in key add failed");
902 /* Update IP checksum */
904 sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, src_address);
905 ip->checksum = ip_csum_fold (sum);
908 nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b),
910 /* Per-user LRU list maintenance */
911 nat44_session_update_lru (sm, s, thread_index);
914 if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
915 nat44_ed_hairpinning_unknown_proto (sm, b, ip);
917 if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
918 vnet_buffer (b)->sw_if_index[VLIB_TX] = outside_fib_index;
924 nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t * vm,
925 vlib_node_runtime_t * node,
926 vlib_frame_t * frame,
927 int is_output_feature)
929 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
930 nat_next_t next_index;
931 snat_main_t *sm = &snat_main;
932 f64 now = vlib_time_now (vm);
933 u32 thread_index = vm->thread_index;
934 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
935 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
938 def_slow = is_output_feature ? NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH :
939 NAT_NEXT_IN2OUT_ED_SLOW_PATH;
941 stats_node_index = sm->ed_in2out_node_index;
943 from = vlib_frame_vector_args (frame);
944 n_left_from = frame->n_vectors;
945 next_index = node->cached_next_index;
947 while (n_left_from > 0)
951 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
953 while (n_left_from > 0 && n_left_to_next > 0)
957 u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
958 new_addr0, old_addr0;
959 u16 old_port0, new_port0;
963 snat_session_t *s0 = 0;
964 clib_bihash_kv_16_8_t kv0, value0;
967 /* speculatively enqueue b0 to the current next frame */
975 b0 = vlib_get_buffer (vm, bi0);
977 if (is_output_feature)
979 vnet_feature_next (&vnet_buffer2 (b0)->nat.arc_next, b0);
980 iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
983 next0 = vnet_buffer2 (b0)->nat.arc_next;
985 ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
988 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
990 fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
993 if (PREDICT_FALSE (ip0->ttl == 1))
995 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
996 icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
997 ICMP4_time_exceeded_ttl_exceeded_in_transit,
999 next0 = NAT_NEXT_ICMP_ERROR;
1003 udp0 = ip4_next_header (ip0);
1004 tcp0 = (tcp_header_t *) udp0;
1005 proto0 = ip_proto_to_snat_proto (ip0->protocol);
1007 if (PREDICT_FALSE (proto0 == ~0))
1013 if (is_output_feature)
1015 if (PREDICT_FALSE (nat_not_translate_output_feature_fwd
1016 (sm, ip0, thread_index, now, vm, b0)))
1020 if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
1026 make_ed_kv (&ip0->src_address, &ip0->dst_address,
1027 ip0->protocol, rx_fib_index0,
1028 vnet_buffer (b0)->ip.reass.l4_src_port,
1029 vnet_buffer (b0)->ip.reass.l4_dst_port, ~0ULL, &kv0);
1031 // lookup for session
1032 if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
1034 // session does not exist go slow path
1038 s0 = pool_elt_at_index (tsm->sessions, value0.value);
1040 if (s0->tcp_close_timestamp)
1042 if (now >= s0->tcp_close_timestamp)
1044 // session is closed, go slow path
1049 // session in transitory timeout, drop
1050 b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TCP_CLOSED];
1051 next0 = NAT_NEXT_DROP;
1056 // drop if session expired
1057 u64 sess_timeout_time;
1058 sess_timeout_time = s0->last_heard +
1059 (f64) nat44_session_get_timeout (sm, s0);
1060 if (now >= sess_timeout_time)
1062 nat_free_session_data (sm, s0, thread_index, 0);
1063 nat44_ed_delete_session (sm, s0, thread_index, 1);
1064 // session is closed, go slow path
1069 b0->flags |= VNET_BUFFER_F_IS_NATED;
1071 if (!is_output_feature)
1072 vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
1074 old_addr0 = ip0->src_address.as_u32;
1075 new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
1076 sum0 = ip0->checksum;
1077 sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1079 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1080 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1081 s0->ext_host_addr.as_u32, ip4_header_t,
1083 ip0->checksum = ip_csum_fold (sum0);
1085 old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
1087 if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
1089 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1091 new_port0 = udp0->src_port = s0->out2in.port;
1092 sum0 = tcp0->checksum;
1094 ip_csum_update (sum0, old_addr0, new_addr0,
1095 ip4_header_t, dst_address);
1097 ip_csum_update (sum0, old_port0, new_port0,
1098 ip4_header_t, length);
1099 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1102 ip_csum_update (sum0, ip0->dst_address.as_u32,
1103 s0->ext_host_addr.as_u32,
1104 ip4_header_t, dst_address);
1106 ip_csum_update (sum0,
1107 vnet_buffer (b0)->ip.
1108 reass.l4_dst_port, s0->ext_host_port,
1109 ip4_header_t, length);
1110 tcp0->dst_port = s0->ext_host_port;
1111 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1113 mss_clamping (sm, tcp0, &sum0);
1114 tcp0->checksum = ip_csum_fold (sum0);
1117 if (nat44_set_tcp_session_state_i2o
1118 (sm, now, s0, b0, thread_index))
1121 else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
1124 new_port0 = udp0->src_port = s0->out2in.port;
1125 sum0 = udp0->checksum;
1127 ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1130 ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
1132 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1134 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1135 s0->ext_host_addr.as_u32,
1136 ip4_header_t, dst_address);
1138 ip_csum_update (sum0,
1139 vnet_buffer (b0)->ip.reass.l4_dst_port,
1140 s0->ext_host_port, ip4_header_t, length);
1141 udp0->dst_port = s0->ext_host_port;
1142 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1144 udp0->checksum = ip_csum_fold (sum0);
1149 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1151 new_port0 = udp0->src_port = s0->out2in.port;
1152 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1154 udp0->dst_port = s0->ext_host_port;
1155 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1162 nat44_session_update_counters (s0, now,
1163 vlib_buffer_length_in_chain
1164 (vm, b0), thread_index);
1165 /* Per-user LRU list maintenance */
1166 nat44_session_update_lru (sm, s0, thread_index);
1169 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
1170 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
1172 nat_in2out_ed_trace_t *t =
1173 vlib_add_trace (vm, node, b0, sizeof (*t));
1174 t->sw_if_index = sw_if_index0;
1175 t->next_index = next0;
1176 t->is_slow_path = 0;
1179 t->session_index = s0 - tsm->sessions;
1181 t->session_index = ~0;
1184 pkts_processed += next0 == vnet_buffer2 (b0)->nat.arc_next;
1185 /* verify speculative enqueue, maybe switch current next frame */
1186 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1187 to_next, n_left_to_next,
1191 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1194 vlib_node_increment_counter (vm, stats_node_index,
1195 NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
1197 vlib_node_increment_counter (vm, stats_node_index,
1198 NAT_IN2OUT_ED_ERROR_TCP_PACKETS, tcp_packets);
1199 vlib_node_increment_counter (vm, stats_node_index,
1200 NAT_IN2OUT_ED_ERROR_UDP_PACKETS, udp_packets);
1201 vlib_node_increment_counter (vm, stats_node_index,
1202 NAT_IN2OUT_ED_ERROR_ICMP_PACKETS,
1204 vlib_node_increment_counter (vm, stats_node_index,
1205 NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
1207 return frame->n_vectors;
1211 nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t * vm,
1212 vlib_node_runtime_t * node,
1213 vlib_frame_t * frame,
1214 int is_output_feature)
1216 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
1217 nat_next_t next_index;
1218 snat_main_t *sm = &snat_main;
1219 f64 now = vlib_time_now (vm);
1220 u32 thread_index = vm->thread_index;
1221 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
1222 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets = 0;
1224 stats_node_index = sm->ed_in2out_slowpath_node_index;
1226 from = vlib_frame_vector_args (frame);
1227 n_left_from = frame->n_vectors;
1228 next_index = node->cached_next_index;
1230 while (n_left_from > 0)
1234 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1236 while (n_left_from > 0 && n_left_to_next > 0)
1240 u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
1241 new_addr0, old_addr0;
1242 u16 old_port0, new_port0;
1246 icmp46_header_t *icmp0;
1247 snat_session_t *s0 = 0;
1248 clib_bihash_kv_16_8_t kv0, value0;
1251 /* speculatively enqueue b0 to the current next frame */
1257 n_left_to_next -= 1;
1259 b0 = vlib_get_buffer (vm, bi0);
1261 if (is_output_feature)
1262 iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
1264 next0 = vnet_buffer2 (b0)->nat.arc_next;
1266 ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
1269 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
1271 fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
1274 if (PREDICT_FALSE (ip0->ttl == 1))
1276 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
1277 icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
1278 ICMP4_time_exceeded_ttl_exceeded_in_transit,
1280 next0 = NAT_NEXT_ICMP_ERROR;
1284 udp0 = ip4_next_header (ip0);
1285 tcp0 = (tcp_header_t *) udp0;
1286 icmp0 = (icmp46_header_t *) udp0;
1287 proto0 = ip_proto_to_snat_proto (ip0->protocol);
1289 if (PREDICT_FALSE (proto0 == ~0))
1291 s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
1296 next0 = NAT_NEXT_DROP;
1302 if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
1304 next0 = icmp_in2out_ed_slow_path
1305 (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
1306 node, next0, now, thread_index, &s0);
1312 make_ed_kv (&ip0->src_address, &ip0->dst_address,
1313 ip0->protocol, rx_fib_index0,
1314 vnet_buffer (b0)->ip.reass.l4_src_port,
1315 vnet_buffer (b0)->ip.reass.l4_dst_port, ~0ULL, &kv0);
1317 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
1319 s0 = pool_elt_at_index (tsm->sessions, value0.value);
1321 if (s0->tcp_close_timestamp && now >= s0->tcp_close_timestamp)
1323 nat_free_session_data (sm, s0, thread_index, 0);
1324 nat44_ed_delete_session (sm, s0, thread_index, 1);
1331 if (is_output_feature)
1334 (nat44_ed_not_translate_output_feature
1335 (sm, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
1336 vnet_buffer (b0)->ip.reass.l4_dst_port, thread_index,
1338 vnet_buffer (b0)->sw_if_index[VLIB_TX])))
1342 * Send DHCP packets to the ipv4 stack, or we won't
1343 * be able to use dhcp client on the outside interface
1346 (proto0 == SNAT_PROTOCOL_UDP
1347 && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
1348 clib_host_to_net_u16 (UDP_DST_PORT_dhcp_to_server))
1349 && ip0->dst_address.as_u32 == 0xffffffff))
1355 (nat44_ed_not_translate
1356 (sm, node, sw_if_index0, ip0, proto0, rx_fib_index0,
1362 slow_path_ed (sm, b0, ip0->src_address, ip0->dst_address,
1363 vnet_buffer (b0)->ip.reass.l4_src_port,
1364 vnet_buffer (b0)->ip.reass.l4_dst_port,
1365 ip0->protocol, rx_fib_index0, &s0, node, next0,
1368 if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
1371 if (PREDICT_FALSE (!s0))
1376 b0->flags |= VNET_BUFFER_F_IS_NATED;
1378 if (!is_output_feature)
1379 vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
1381 old_addr0 = ip0->src_address.as_u32;
1382 new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
1383 sum0 = ip0->checksum;
1384 sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1386 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1387 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1388 s0->ext_host_addr.as_u32, ip4_header_t,
1390 ip0->checksum = ip_csum_fold (sum0);
1392 old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
1394 if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
1396 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1398 new_port0 = udp0->src_port = s0->out2in.port;
1399 sum0 = tcp0->checksum;
1401 ip_csum_update (sum0, old_addr0, new_addr0,
1402 ip4_header_t, dst_address);
1404 ip_csum_update (sum0, old_port0, new_port0,
1405 ip4_header_t, length);
1406 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1409 ip_csum_update (sum0, ip0->dst_address.as_u32,
1410 s0->ext_host_addr.as_u32,
1411 ip4_header_t, dst_address);
1413 ip_csum_update (sum0,
1414 vnet_buffer (b0)->ip.
1415 reass.l4_dst_port, s0->ext_host_port,
1416 ip4_header_t, length);
1417 tcp0->dst_port = s0->ext_host_port;
1418 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1420 mss_clamping (sm, tcp0, &sum0);
1421 tcp0->checksum = ip_csum_fold (sum0);
1424 if (nat44_set_tcp_session_state_i2o
1425 (sm, now, s0, b0, thread_index))
1428 else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
1431 new_port0 = udp0->src_port = s0->out2in.port;
1432 sum0 = udp0->checksum;
1434 ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1437 ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
1439 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1441 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1442 s0->ext_host_addr.as_u32,
1443 ip4_header_t, dst_address);
1445 ip_csum_update (sum0,
1446 vnet_buffer (b0)->ip.reass.l4_dst_port,
1447 s0->ext_host_port, ip4_header_t, length);
1448 udp0->dst_port = s0->ext_host_port;
1449 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1451 udp0->checksum = ip_csum_fold (sum0);
1456 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1458 new_port0 = udp0->src_port = s0->out2in.port;
1459 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1461 udp0->dst_port = s0->ext_host_port;
1462 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1469 nat44_session_update_counters (s0, now,
1470 vlib_buffer_length_in_chain
1471 (vm, b0), thread_index);
1472 /* Per-user LRU list maintenance */
1473 nat44_session_update_lru (sm, s0, thread_index);
1476 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
1477 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
1479 nat_in2out_ed_trace_t *t =
1480 vlib_add_trace (vm, node, b0, sizeof (*t));
1481 t->sw_if_index = sw_if_index0;
1482 t->next_index = next0;
1483 t->is_slow_path = 1;
1486 t->session_index = s0 - tsm->sessions;
1488 t->session_index = ~0;
1491 pkts_processed += next0 == vnet_buffer2 (b0)->nat.arc_next;
1493 /* verify speculative enqueue, maybe switch current next frame */
1494 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1495 to_next, n_left_to_next,
1499 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1502 vlib_node_increment_counter (vm, stats_node_index,
1503 NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
1505 vlib_node_increment_counter (vm, stats_node_index,
1506 NAT_IN2OUT_ED_ERROR_TCP_PACKETS, tcp_packets);
1507 vlib_node_increment_counter (vm, stats_node_index,
1508 NAT_IN2OUT_ED_ERROR_UDP_PACKETS, udp_packets);
1509 vlib_node_increment_counter (vm, stats_node_index,
1510 NAT_IN2OUT_ED_ERROR_ICMP_PACKETS,
1512 vlib_node_increment_counter (vm, stats_node_index,
1513 NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
1515 return frame->n_vectors;
1518 VLIB_NODE_FN (nat44_ed_in2out_node) (vlib_main_t * vm,
1519 vlib_node_runtime_t * node,
1520 vlib_frame_t * frame)
1522 return nat44_ed_in2out_fast_path_node_fn_inline (vm, node, frame, 0);
1526 VLIB_REGISTER_NODE (nat44_ed_in2out_node) = {
1527 .name = "nat44-ed-in2out",
1528 .vector_size = sizeof (u32),
1529 .sibling_of = "nat-default",
1530 .format_trace = format_nat_in2out_ed_trace,
1531 .type = VLIB_NODE_TYPE_INTERNAL,
1532 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1533 .error_strings = nat_in2out_ed_error_strings,
1534 .runtime_data_bytes = sizeof (snat_runtime_t),
1538 VLIB_NODE_FN (nat44_ed_in2out_output_node) (vlib_main_t * vm,
1539 vlib_node_runtime_t * node,
1540 vlib_frame_t * frame)
1542 return nat44_ed_in2out_fast_path_node_fn_inline (vm, node, frame, 1);
1546 VLIB_REGISTER_NODE (nat44_ed_in2out_output_node) = {
1547 .name = "nat44-ed-in2out-output",
1548 .vector_size = sizeof (u32),
1549 .sibling_of = "nat-default",
1550 .format_trace = format_nat_in2out_ed_trace,
1551 .type = VLIB_NODE_TYPE_INTERNAL,
1552 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1553 .error_strings = nat_in2out_ed_error_strings,
1554 .runtime_data_bytes = sizeof (snat_runtime_t),
1558 VLIB_NODE_FN (nat44_ed_in2out_slowpath_node) (vlib_main_t * vm,
1559 vlib_node_runtime_t *
1560 node, vlib_frame_t * frame)
1562 return nat44_ed_in2out_slow_path_node_fn_inline (vm, node, frame, 0);
1566 VLIB_REGISTER_NODE (nat44_ed_in2out_slowpath_node) = {
1567 .name = "nat44-ed-in2out-slowpath",
1568 .vector_size = sizeof (u32),
1569 .sibling_of = "nat-default",
1570 .format_trace = format_nat_in2out_ed_trace,
1571 .type = VLIB_NODE_TYPE_INTERNAL,
1572 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1573 .error_strings = nat_in2out_ed_error_strings,
1574 .runtime_data_bytes = sizeof (snat_runtime_t),
1578 VLIB_NODE_FN (nat44_ed_in2out_output_slowpath_node) (vlib_main_t * vm,
1581 vlib_frame_t * frame)
1583 return nat44_ed_in2out_slow_path_node_fn_inline (vm, node, frame, 1);
1587 VLIB_REGISTER_NODE (nat44_ed_in2out_output_slowpath_node) = {
1588 .name = "nat44-ed-in2out-output-slowpath",
1589 .vector_size = sizeof (u32),
1590 .sibling_of = "nat-default",
1591 .format_trace = format_nat_in2out_ed_trace,
1592 .type = VLIB_NODE_TYPE_INTERNAL,
1593 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1594 .error_strings = nat_in2out_ed_error_strings,
1595 .runtime_data_bytes = sizeof (snat_runtime_t),
1600 format_nat_pre_trace (u8 * s, va_list * args)
1602 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1603 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1604 nat_pre_trace_t *t = va_arg (*args, nat_pre_trace_t *);
1605 return format (s, "in2out next_index %d", t->next_index);
1608 VLIB_NODE_FN (nat_pre_in2out_node)
1609 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
1611 return nat_pre_node_fn_inline (vm, node, frame,
1612 NAT_NEXT_IN2OUT_ED_FAST_PATH);
1616 VLIB_REGISTER_NODE (nat_pre_in2out_node) = {
1617 .name = "nat-pre-in2out",
1618 .vector_size = sizeof (u32),
1619 .sibling_of = "nat-default",
1620 .format_trace = format_nat_pre_trace,
1621 .type = VLIB_NODE_TYPE_INTERNAL,
1627 * fd.io coding-style-patch-verification: ON
1630 * eval: (c-set-style "gnu")