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>
34 #include <nat/nat44/ed_inlines.h>
36 static char *nat_in2out_ed_error_strings[] = {
37 #define _(sym,string) string,
38 foreach_nat_in2out_ed_error
48 } nat_in2out_ed_trace_t;
51 format_nat_in2out_ed_trace (u8 * s, va_list * args)
53 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
54 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
55 nat_in2out_ed_trace_t *t = va_arg (*args, nat_in2out_ed_trace_t *);
59 t->is_slow_path ? "NAT44_IN2OUT_ED_SLOW_PATH" :
60 "NAT44_IN2OUT_ED_FAST_PATH";
62 s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag,
63 t->sw_if_index, t->next_index, t->session_index);
68 #ifndef CLIB_MARCH_VARIANT
70 nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg)
72 snat_main_t *sm = &snat_main;
73 nat44_is_idle_session_ctx_t *ctx = arg;
75 u64 sess_timeout_time;
78 ip4_address_t *l_addr, *r_addr;
80 clib_bihash_kv_16_8_t ed_kv;
83 snat_session_key_t key;
84 snat_main_per_thread_data_t *tsm = vec_elt_at_index (sm->per_thread_data,
87 ASSERT (ctx->thread_index == ed_value_get_thread_index (kv));
88 s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (kv));
89 sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s);
90 if (ctx->now >= sess_timeout_time)
92 if (is_fwd_bypass_session (s))
95 l_addr = &s->out2in.addr;
96 r_addr = &s->ext_host_addr;
97 fib_index = s->out2in.fib_index;
98 if (snat_is_unk_proto_session (s))
100 proto = s->in2out.port;
106 proto = nat_proto_to_ip_proto (s->in2out.protocol);
107 l_port = s->out2in.port;
108 r_port = s->ext_host_port;
110 make_ed_kv (l_addr, r_addr, proto, fib_index, l_port, r_port, ~0, ~0,
112 if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &ed_kv, 0))
113 nat_elog_warn ("out2in_ed key del failed");
115 if (snat_is_unk_proto_session (s))
118 snat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
119 s->in2out.addr.as_u32,
120 s->out2in.addr.as_u32,
124 s->in2out.fib_index);
126 nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
127 &s->in2out.addr, s->in2out.port,
128 &s->ext_host_nat_addr, s->ext_host_nat_port,
129 &s->out2in.addr, s->out2in.port,
130 &s->ext_host_addr, s->ext_host_port,
131 s->in2out.protocol, is_twice_nat_session (s));
133 nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
134 s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
137 if (is_twice_nat_session (s))
139 for (i = 0; i < vec_len (sm->twice_nat_addresses); i++)
141 key.protocol = s->in2out.protocol;
142 key.port = s->ext_host_nat_port;
143 a = sm->twice_nat_addresses + i;
144 if (a->addr.as_u32 == s->ext_host_nat_addr.as_u32)
146 snat_free_outside_address_and_port (sm->twice_nat_addresses,
154 if (snat_is_session_static (s))
157 snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
160 nat_ed_session_delete (sm, s, ctx->thread_index, 1);
169 icmp_in2out_ed_slow_path (snat_main_t * sm, vlib_buffer_t * b0,
170 ip4_header_t * ip0, icmp46_header_t * icmp0,
171 u32 sw_if_index0, u32 rx_fib_index0,
172 vlib_node_runtime_t * node, u32 next0, f64 now,
173 u32 thread_index, snat_session_t ** p_s0)
175 vlib_main_t *vm = vlib_get_main ();
177 next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
178 next0, thread_index, p_s0, 0);
179 snat_session_t *s0 = *p_s0;
180 if (PREDICT_TRUE (next0 != NAT_NEXT_DROP && s0))
183 nat44_session_update_counters (s0, now,
184 vlib_buffer_length_in_chain
185 (vm, b0), thread_index);
186 /* Per-user LRU list maintenance */
187 nat44_session_update_lru (sm, s0, thread_index);
192 static_always_inline u16
193 snat_random_port (u16 min, u16 max)
195 snat_main_t *sm = &snat_main;
196 return min + random_u32 (&sm->random_seed) /
197 (random_u32_max () / (max - min + 1) + 1);
201 nat_ed_alloc_addr_and_port (snat_main_t * sm, u32 rx_fib_index,
202 u32 nat_proto, u32 thread_index,
203 ip4_address_t r_addr, u16 r_port, u8 proto,
204 u16 port_per_thread, u32 snat_thread_index,
206 ip4_address_t * allocated_addr,
207 u16 * allocated_port,
208 clib_bihash_kv_16_8_t * out2in_ed_kv)
211 snat_address_t *a, *ga = 0;
213 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
215 const u16 port_thread_offset = (port_per_thread * snat_thread_index) + 1024;
217 for (i = 0; i < vec_len (sm->addresses); i++)
219 a = sm->addresses + i;
222 #define _(N, j, n, unused) \
223 case NAT_PROTOCOL_##N: \
224 if (a->fib_index == rx_fib_index) \
226 u16 port = snat_random_port (1, port_per_thread); \
227 u16 attempts = port_per_thread; \
228 while (attempts > 0) \
231 portnum = port_thread_offset + port; \
232 make_ed_kv (&a->addr, &r_addr, proto, s->out2in.fib_index, \
233 clib_host_to_net_u16 (portnum), r_port, thread_index, \
234 s - tsm->sessions, out2in_ed_kv); \
235 int rv = clib_bihash_add_del_16_8 (&sm->out2in_ed, out2in_ed_kv, \
239 ++a->busy_##n##_port_refcounts[portnum]; \
240 a->busy_##n##_ports_per_thread[thread_index]++; \
241 a->busy_##n##_ports++; \
242 *allocated_addr = a->addr; \
243 *allocated_port = clib_host_to_net_u16 (portnum); \
246 port = (port + 1) % port_per_thread; \
249 else if (a->fib_index == ~0) \
255 foreach_nat_protocol;
257 nat_elog_info ("unknown protocol");
264 /* fake fib_index to reuse macro */
269 foreach_nat_protocol;
271 nat_elog_info ("unknown protocol");
278 /* Totally out of translations to use... */
279 snat_ipfix_logging_addresses_exhausted (thread_index, 0);
283 static_always_inline u32
284 nat_outside_fib_index_lookup (snat_main_t * sm, ip4_address_t addr)
286 fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
287 nat_outside_fib_t *outside_fib;
289 .fp_proto = FIB_PROTOCOL_IP4,
291 .fp_addr = {.ip4.as_u32 = addr.as_u32,}
294 // TODO: multiple vrfs none can resolve addr
296 vec_foreach (outside_fib, sm->outside_fibs)
298 fei = fib_table_lookup (outside_fib->fib_index, &pfx);
299 if (FIB_NODE_INDEX_INVALID != fei)
301 if (fib_entry_get_resolving_interface (fei) != ~0)
303 return outside_fib->fib_index;
312 slow_path_ed (snat_main_t * sm,
314 ip4_address_t l_addr,
315 ip4_address_t r_addr,
320 snat_session_t ** sessionp,
321 vlib_node_runtime_t * node, u32 next, u32 thread_index, f64 now)
324 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
325 clib_bihash_kv_16_8_t out2in_ed_kv;
326 nat44_is_idle_session_ctx_t ctx;
327 snat_session_key_t key0, key1;
328 ip4_address_t allocated_addr;
333 u32 nat_proto = ip_proto_to_nat_proto (proto);
334 snat_session_t *s = NULL;
335 lb_nat_type_t lb = 0;
337 if (PREDICT_TRUE (nat_proto == NAT_PROTOCOL_TCP))
341 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
343 b->error = node->errors[NAT_IN2OUT_ED_ERROR_NON_SYN];
344 return NAT_NEXT_DROP;
349 (nat44_ed_maximum_sessions_exceeded (sm, rx_fib_index, thread_index)))
351 if (!nat_lru_free_one (sm, thread_index, now))
353 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
354 nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
355 nat_elog_notice ("maximum sessions exceeded");
356 return NAT_NEXT_DROP;
362 key1.protocol = key0.protocol = nat_proto;
363 key0.fib_index = rx_fib_index;
364 key1.fib_index = sm->outside_fib_index;
365 tx_fib_index = sm->outside_fib_index;
367 /* First try to match static mapping by local address and port */
368 if (snat_static_mapping_match
369 (sm, key0, &key1, 0, 0, 0, &lb, 0, &identity_nat))
371 s = nat_ed_session_alloc (sm, thread_index, now, proto);
374 nat_elog_warn ("create NAT session failed");
375 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
376 return NAT_NEXT_DROP;
378 switch (vec_len (sm->outside_fibs))
381 tx_fib_index = sm->outside_fib_index;
384 tx_fib_index = sm->outside_fibs[0].fib_index;
387 tx_fib_index = nat_outside_fib_index_lookup (sm, r_addr);
391 s->out2in.fib_index = tx_fib_index;
392 /* Try to create dynamic translation */
393 if (nat_ed_alloc_addr_and_port (sm, rx_fib_index, nat_proto,
394 thread_index, r_addr, r_port, proto,
396 tsm->snat_thread_index, s,
398 &allocated_port, &out2in_ed_kv))
400 nat_elog_notice ("addresses exhausted");
401 b->error = node->errors[NAT_IN2OUT_ED_ERROR_OUT_OF_PORTS];
402 nat_ed_session_delete (sm, s, thread_index, 1);
403 return NAT_NEXT_DROP;
405 key1.addr = allocated_addr;
406 key1.port = allocated_port;
410 if (PREDICT_FALSE (identity_nat))
415 s = nat_ed_session_alloc (sm, thread_index, now, proto);
418 nat_elog_warn ("create NAT session failed");
419 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
420 return NAT_NEXT_DROP;
422 switch (vec_len (sm->outside_fibs))
425 tx_fib_index = sm->outside_fib_index;
428 tx_fib_index = sm->outside_fibs[0].fib_index;
431 tx_fib_index = nat_outside_fib_index_lookup (sm, r_addr);
435 s->out2in.fib_index = tx_fib_index;
436 s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
438 make_ed_kv (&key1.addr, &r_addr, proto,
439 s->out2in.fib_index, key1.port, r_port, thread_index,
440 s - tsm->sessions, &out2in_ed_kv);
441 if (clib_bihash_add_or_overwrite_stale_16_8
442 (&sm->out2in_ed, &out2in_ed_kv, nat44_o2i_ed_is_idle_session_cb,
444 nat_elog_notice ("out2in-ed key add failed");
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.fib_index = tx_fib_index;
455 s->out2in.protocol = key0.protocol;
457 clib_bihash_kv_16_8_t in2out_ed_kv;
458 make_ed_kv (&l_addr, &r_addr, proto, rx_fib_index, l_port, r_port,
459 thread_index, s - tsm->sessions, &in2out_ed_kv);
461 ctx.thread_index = thread_index;
462 if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->in2out_ed, &in2out_ed_kv,
463 nat44_i2o_ed_is_idle_session_cb,
465 nat_elog_notice ("in2out-ed key add failed");
470 snat_ipfix_logging_nat44_ses_create (thread_index,
471 s->in2out.addr.as_u32,
472 s->out2in.addr.as_u32,
475 s->out2in.port, s->in2out.fib_index);
477 nat_syslog_nat44_sadd (s->user_index, s->in2out.fib_index,
478 &s->in2out.addr, s->in2out.port,
479 &s->ext_host_nat_addr, s->ext_host_nat_port,
480 &s->out2in.addr, s->out2in.port,
481 &s->ext_host_addr, s->ext_host_port,
482 s->in2out.protocol, 0);
484 nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
485 s->out2in.port, &s->ext_host_addr, s->ext_host_port,
486 &s->ext_host_nat_addr, s->ext_host_nat_port,
487 s->in2out.protocol, s->in2out.fib_index, s->flags,
493 static_always_inline int
494 nat44_ed_not_translate (snat_main_t * sm, vlib_node_runtime_t * node,
495 u32 sw_if_index, ip4_header_t * ip, u32 proto,
496 u32 rx_fib_index, u32 thread_index)
498 udp_header_t *udp = ip4_next_header (ip);
499 clib_bihash_kv_16_8_t kv, value;
500 snat_session_key_t key0, key1;
502 make_ed_kv (&ip->dst_address, &ip->src_address, ip->protocol,
503 sm->outside_fib_index, udp->dst_port, udp->src_port, ~0, ~0,
506 /* NAT packet aimed at external address if has active sessions */
507 if (clib_bihash_search_16_8 (&sm->out2in_ed, &kv, &value))
509 key0.addr = ip->dst_address;
510 key0.port = udp->dst_port;
511 key0.protocol = proto;
512 key0.fib_index = sm->outside_fib_index;
513 /* or is static mappings */
514 if (!snat_static_mapping_match (sm, key0, &key1, 1, 0, 0, 0, 0, 0))
520 if (sm->forwarding_enabled)
523 return snat_not_translate_fast (sm, node, sw_if_index, ip, proto,
527 static_always_inline int
528 nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
529 u32 thread_index, f64 now,
530 vlib_main_t * vm, vlib_buffer_t * b)
532 clib_bihash_kv_16_8_t kv, value;
533 snat_session_t *s = 0;
534 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
536 if (!sm->forwarding_enabled)
539 if (ip->protocol == IP_PROTOCOL_ICMP)
541 if (get_icmp_i2o_ed_key (b, ip, 0, ~0, ~0, 0, 0, 0, &kv))
544 else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
546 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol, 0,
547 vnet_buffer (b)->ip.reass.l4_src_port,
548 vnet_buffer (b)->ip.reass.l4_dst_port, ~0, ~0, &kv);
552 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol, 0, 0,
556 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
558 ASSERT (thread_index == ed_value_get_thread_index (&value));
560 pool_elt_at_index (tsm->sessions,
561 ed_value_get_session_index (&value));
562 if (is_fwd_bypass_session (s))
564 if (ip->protocol == IP_PROTOCOL_TCP)
566 if (nat44_set_tcp_session_state_i2o
567 (sm, now, s, b, thread_index))
571 nat44_session_update_counters (s, now,
572 vlib_buffer_length_in_chain (vm, b),
574 /* Per-user LRU list maintenance */
575 nat44_session_update_lru (sm, s, thread_index);
585 static_always_inline int
586 nat44_ed_not_translate_output_feature (snat_main_t * sm, ip4_header_t * ip,
587 u16 src_port, u16 dst_port,
588 u32 thread_index, u32 rx_sw_if_index,
591 clib_bihash_kv_16_8_t kv, value;
592 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
595 u32 rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (rx_sw_if_index);
596 u32 tx_fib_index = ip4_fib_table_get_index_for_sw_if_index (tx_sw_if_index);
599 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol,
600 tx_fib_index, src_port, dst_port, ~0, ~0, &kv);
601 if (!clib_bihash_search_16_8 (&sm->out2in_ed, &kv, &value))
603 ASSERT (thread_index == ed_value_get_thread_index (&value));
605 pool_elt_at_index (tsm->sessions,
606 ed_value_get_session_index (&value));
607 if (nat44_is_ses_closed (s))
609 nat_free_session_data (sm, s, thread_index, 0);
610 nat_ed_session_delete (sm, s, thread_index, 1);
613 s->flags |= SNAT_SESSION_FLAG_OUTPUT_FEATURE;
618 make_ed_kv (&ip->dst_address, &ip->src_address, ip->protocol,
619 rx_fib_index, dst_port, src_port, ~0, ~0, &kv);
620 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
622 ASSERT (thread_index == ed_value_get_thread_index (&value));
624 pool_elt_at_index (tsm->sessions,
625 ed_value_get_session_index (&value));
626 if (is_fwd_bypass_session (s))
631 pool_foreach (i, sm->output_feature_interfaces,
633 if ((nat_interface_is_inside (i)) && (rx_sw_if_index == i->sw_if_index))
643 #ifndef CLIB_MARCH_VARIANT
645 icmp_match_in2out_ed (snat_main_t * sm, vlib_node_runtime_t * node,
646 u32 thread_index, vlib_buffer_t * b, ip4_header_t * ip,
647 u8 * p_proto, snat_session_key_t * p_value,
648 u8 * p_dont_translate, void *d, void *e)
652 snat_session_t *s = 0;
653 u8 dont_translate = 0;
654 clib_bihash_kv_16_8_t kv, value;
657 u16 l_port = 0, r_port = 0; // initialize to workaround gcc warning
658 vlib_main_t *vm = vlib_get_main ();
659 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
661 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
662 rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
665 get_icmp_i2o_ed_key (b, ip, rx_fib_index, ~0, ~0, p_proto, &l_port,
669 b->error = node->errors[err];
670 next = NAT_NEXT_DROP;
674 if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
676 if (vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0)
679 (nat44_ed_not_translate_output_feature
680 (sm, ip, l_port, r_port, thread_index,
681 sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_TX])))
689 if (PREDICT_FALSE (nat44_ed_not_translate (sm, node, sw_if_index,
690 ip, NAT_PROTOCOL_ICMP,
700 (icmp_type_is_error_message
701 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
703 b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
704 next = NAT_NEXT_DROP;
709 slow_path_ed (sm, b, ip->src_address, ip->dst_address, l_port, r_port,
710 ip->protocol, rx_fib_index, &s, node, next,
711 thread_index, vlib_time_now (vm));
713 if (PREDICT_FALSE (next == NAT_NEXT_DROP))
725 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
727 && vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
729 && !icmp_type_is_error_message (vnet_buffer (b)->ip.
730 reass.icmp_type_or_tcp_flags)))
732 b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
733 next = NAT_NEXT_DROP;
737 ASSERT (thread_index == ed_value_get_thread_index (&value));
739 pool_elt_at_index (tsm->sessions,
740 ed_value_get_session_index (&value));
744 *p_value = s->out2in;
745 *p_dont_translate = dont_translate;
747 *(snat_session_t **) d = s;
752 static snat_session_t *
753 nat44_ed_in2out_unknown_proto (snat_main_t * sm,
759 vlib_main_t * vm, vlib_node_runtime_t * node)
761 clib_bihash_kv_8_8_t kv, value;
762 clib_bihash_kv_16_8_t s_kv, s_value;
763 snat_static_mapping_t *m;
764 u32 old_addr, new_addr = 0;
766 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
768 u32 outside_fib_index = sm->outside_fib_index;
772 switch (vec_len (sm->outside_fibs))
775 outside_fib_index = sm->outside_fib_index;
778 outside_fib_index = sm->outside_fibs[0].fib_index;
781 outside_fib_index = nat_outside_fib_index_lookup (sm, ip->dst_address);
784 old_addr = ip->src_address.as_u32;
786 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol,
787 rx_fib_index, 0, 0, ~0, ~0, &s_kv);
789 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &s_kv, &s_value))
791 ASSERT (thread_index == ed_value_get_thread_index (&s_value));
793 pool_elt_at_index (tsm->sessions,
794 ed_value_get_session_index (&s_value));
795 new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
800 (nat44_ed_maximum_sessions_exceeded
801 (sm, rx_fib_index, thread_index)))
803 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
804 nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
805 nat_elog_notice ("maximum sessions exceeded");
809 make_sm_kv (&kv, &ip->src_address, 0, rx_fib_index, 0);
811 /* Try to find static mapping first */
812 if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
814 m = pool_elt_at_index (sm->static_mappings, value.value);
815 new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
822 pool_foreach (s, tsm->sessions, {
823 if (s->ext_host_addr.as_u32 == ip->dst_address.as_u32)
825 new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
827 make_ed_kv (&s->out2in.addr, &ip->dst_address, ip->protocol,
828 outside_fib_index, 0, 0, ~0, ~0, &s_kv);
829 if (clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value))
837 for (i = 0; i < vec_len (sm->addresses); i++)
839 make_ed_kv (&sm->addresses[i].addr, &ip->dst_address,
840 ip->protocol, outside_fib_index, 0, 0, ~0, ~0,
842 if (clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value))
844 new_addr = ip->src_address.as_u32 =
845 sm->addresses[i].addr.as_u32;
853 s = nat_ed_session_alloc (sm, thread_index, now, ip->protocol);
856 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
857 nat_elog_warn ("create NAT session failed");
861 s->ext_host_addr.as_u32 = ip->dst_address.as_u32;
862 s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
863 s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
864 s->out2in.addr.as_u32 = new_addr;
865 s->out2in.fib_index = outside_fib_index;
866 s->in2out.addr.as_u32 = old_addr;
867 s->in2out.fib_index = rx_fib_index;
868 s->in2out.port = s->out2in.port = ip->protocol;
870 s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
872 /* Add to lookup tables */
873 make_ed_kv (&s->in2out.addr, &ip->dst_address, ip->protocol,
874 rx_fib_index, 0, 0, thread_index, s - tsm->sessions, &s_kv);
875 if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &s_kv, 1))
876 nat_elog_notice ("in2out key add failed");
878 make_ed_kv (&s->out2in.addr, &ip->dst_address, ip->protocol,
879 outside_fib_index, 0, 0, thread_index, s - tsm->sessions,
881 if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &s_kv, 1))
882 nat_elog_notice ("out2in key add failed");
885 /* Update IP checksum */
887 sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, src_address);
888 ip->checksum = ip_csum_fold (sum);
891 nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b),
893 /* Per-user LRU list maintenance */
894 nat44_session_update_lru (sm, s, thread_index);
897 if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
898 nat44_ed_hairpinning_unknown_proto (sm, b, ip);
900 if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
901 vnet_buffer (b)->sw_if_index[VLIB_TX] = outside_fib_index;
907 nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t * vm,
908 vlib_node_runtime_t * node,
909 vlib_frame_t * frame,
910 int is_output_feature)
912 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
913 nat_next_t next_index;
914 snat_main_t *sm = &snat_main;
915 f64 now = vlib_time_now (vm);
916 u32 thread_index = vm->thread_index;
917 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
918 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
921 def_slow = is_output_feature ? NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH :
922 NAT_NEXT_IN2OUT_ED_SLOW_PATH;
924 stats_node_index = sm->ed_in2out_node_index;
926 from = vlib_frame_vector_args (frame);
927 n_left_from = frame->n_vectors;
928 next_index = node->cached_next_index;
930 while (n_left_from > 0)
934 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
936 while (n_left_from > 0 && n_left_to_next > 0)
940 u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
941 new_addr0, old_addr0;
942 u16 old_port0, new_port0;
946 snat_session_t *s0 = 0;
947 clib_bihash_kv_16_8_t kv0, value0;
950 /* speculatively enqueue b0 to the current next frame */
958 b0 = vlib_get_buffer (vm, bi0);
960 if (is_output_feature)
962 vnet_feature_next (&vnet_buffer2 (b0)->nat.arc_next, b0);
963 iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
966 next0 = vnet_buffer2 (b0)->nat.arc_next;
968 ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
971 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
973 fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
976 if (PREDICT_FALSE (ip0->ttl == 1))
978 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
979 icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
980 ICMP4_time_exceeded_ttl_exceeded_in_transit,
982 next0 = NAT_NEXT_ICMP_ERROR;
986 udp0 = ip4_next_header (ip0);
987 tcp0 = (tcp_header_t *) udp0;
988 proto0 = ip_proto_to_nat_proto (ip0->protocol);
990 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
996 if (is_output_feature)
998 if (PREDICT_FALSE (nat_not_translate_output_feature_fwd
999 (sm, ip0, thread_index, now, vm, b0)))
1003 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
1009 make_ed_kv (&ip0->src_address, &ip0->dst_address,
1010 ip0->protocol, rx_fib_index0,
1011 vnet_buffer (b0)->ip.reass.l4_src_port,
1012 vnet_buffer (b0)->ip.reass.l4_dst_port, ~0, ~0, &kv0);
1014 // lookup for session
1015 if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
1017 // session does not exist go slow path
1021 ASSERT (thread_index == ed_value_get_thread_index (&value0));
1023 pool_elt_at_index (tsm->sessions,
1024 ed_value_get_session_index (&value0));
1026 if (s0->tcp_closed_timestamp)
1028 if (now >= s0->tcp_closed_timestamp)
1030 // session is closed, go slow path
1035 // session in transitory timeout, drop
1036 b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TCP_CLOSED];
1037 next0 = NAT_NEXT_DROP;
1042 // drop if session expired
1043 u64 sess_timeout_time;
1044 sess_timeout_time = s0->last_heard +
1045 (f64) nat44_session_get_timeout (sm, s0);
1046 if (now >= sess_timeout_time)
1048 nat_free_session_data (sm, s0, thread_index, 0);
1049 nat_ed_session_delete (sm, s0, thread_index, 1);
1050 // session is closed, go slow path
1055 b0->flags |= VNET_BUFFER_F_IS_NATED;
1057 if (!is_output_feature)
1058 vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
1060 old_addr0 = ip0->src_address.as_u32;
1061 new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
1062 sum0 = ip0->checksum;
1063 sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1065 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1066 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1067 s0->ext_host_addr.as_u32, ip4_header_t,
1069 ip0->checksum = ip_csum_fold (sum0);
1071 old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
1073 if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
1075 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1077 new_port0 = udp0->src_port = s0->out2in.port;
1078 sum0 = tcp0->checksum;
1080 ip_csum_update (sum0, old_addr0, new_addr0,
1081 ip4_header_t, dst_address);
1083 ip_csum_update (sum0, old_port0, new_port0,
1084 ip4_header_t, length);
1085 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1088 ip_csum_update (sum0, ip0->dst_address.as_u32,
1089 s0->ext_host_addr.as_u32,
1090 ip4_header_t, dst_address);
1092 ip_csum_update (sum0,
1093 vnet_buffer (b0)->ip.
1094 reass.l4_dst_port, s0->ext_host_port,
1095 ip4_header_t, length);
1096 tcp0->dst_port = s0->ext_host_port;
1097 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1099 mss_clamping (sm, tcp0, &sum0);
1100 tcp0->checksum = ip_csum_fold (sum0);
1103 if (nat44_set_tcp_session_state_i2o
1104 (sm, now, s0, b0, thread_index))
1107 else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
1110 new_port0 = udp0->src_port = s0->out2in.port;
1111 sum0 = udp0->checksum;
1113 ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1116 ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
1118 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1120 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1121 s0->ext_host_addr.as_u32,
1122 ip4_header_t, dst_address);
1124 ip_csum_update (sum0,
1125 vnet_buffer (b0)->ip.reass.l4_dst_port,
1126 s0->ext_host_port, ip4_header_t, length);
1127 udp0->dst_port = s0->ext_host_port;
1128 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1130 udp0->checksum = ip_csum_fold (sum0);
1135 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1137 new_port0 = udp0->src_port = s0->out2in.port;
1138 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1140 udp0->dst_port = s0->ext_host_port;
1141 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1148 nat44_session_update_counters (s0, now,
1149 vlib_buffer_length_in_chain
1150 (vm, b0), thread_index);
1151 /* Per-user LRU list maintenance */
1152 nat44_session_update_lru (sm, s0, thread_index);
1155 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
1156 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
1158 nat_in2out_ed_trace_t *t =
1159 vlib_add_trace (vm, node, b0, sizeof (*t));
1160 t->sw_if_index = sw_if_index0;
1161 t->next_index = next0;
1162 t->is_slow_path = 0;
1165 t->session_index = s0 - tsm->sessions;
1167 t->session_index = ~0;
1170 pkts_processed += next0 == vnet_buffer2 (b0)->nat.arc_next;
1171 /* verify speculative enqueue, maybe switch current next frame */
1172 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1173 to_next, n_left_to_next,
1177 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1180 vlib_node_increment_counter (vm, stats_node_index,
1181 NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
1183 vlib_node_increment_counter (vm, stats_node_index,
1184 NAT_IN2OUT_ED_ERROR_TCP_PACKETS, tcp_packets);
1185 vlib_node_increment_counter (vm, stats_node_index,
1186 NAT_IN2OUT_ED_ERROR_UDP_PACKETS, udp_packets);
1187 vlib_node_increment_counter (vm, stats_node_index,
1188 NAT_IN2OUT_ED_ERROR_ICMP_PACKETS,
1190 vlib_node_increment_counter (vm, stats_node_index,
1191 NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
1193 return frame->n_vectors;
1197 nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t * vm,
1198 vlib_node_runtime_t * node,
1199 vlib_frame_t * frame,
1200 int is_output_feature)
1202 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
1203 nat_next_t next_index;
1204 snat_main_t *sm = &snat_main;
1205 f64 now = vlib_time_now (vm);
1206 u32 thread_index = vm->thread_index;
1207 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
1208 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets = 0;
1210 stats_node_index = sm->ed_in2out_slowpath_node_index;
1212 from = vlib_frame_vector_args (frame);
1213 n_left_from = frame->n_vectors;
1214 next_index = node->cached_next_index;
1216 while (n_left_from > 0)
1220 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1222 while (n_left_from > 0 && n_left_to_next > 0)
1226 u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
1227 new_addr0, old_addr0;
1228 u16 old_port0, new_port0;
1232 icmp46_header_t *icmp0;
1233 snat_session_t *s0 = 0;
1234 clib_bihash_kv_16_8_t kv0, value0;
1237 /* speculatively enqueue b0 to the current next frame */
1243 n_left_to_next -= 1;
1245 b0 = vlib_get_buffer (vm, bi0);
1247 if (is_output_feature)
1248 iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
1250 next0 = vnet_buffer2 (b0)->nat.arc_next;
1252 ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
1255 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
1257 fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
1260 if (PREDICT_FALSE (ip0->ttl == 1))
1262 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
1263 icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
1264 ICMP4_time_exceeded_ttl_exceeded_in_transit,
1266 next0 = NAT_NEXT_ICMP_ERROR;
1270 udp0 = ip4_next_header (ip0);
1271 tcp0 = (tcp_header_t *) udp0;
1272 icmp0 = (icmp46_header_t *) udp0;
1273 proto0 = ip_proto_to_nat_proto (ip0->protocol);
1275 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
1277 s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
1282 next0 = NAT_NEXT_DROP;
1288 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
1290 next0 = icmp_in2out_ed_slow_path
1291 (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
1292 node, next0, now, thread_index, &s0);
1298 make_ed_kv (&ip0->src_address, &ip0->dst_address,
1299 ip0->protocol, rx_fib_index0,
1300 vnet_buffer (b0)->ip.reass.l4_src_port,
1301 vnet_buffer (b0)->ip.reass.l4_dst_port, ~0, ~0, &kv0);
1303 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
1305 ASSERT (thread_index == ed_value_get_thread_index (&value0));
1307 pool_elt_at_index (tsm->sessions,
1308 ed_value_get_session_index (&value0));
1310 if (s0->tcp_closed_timestamp && now >= s0->tcp_closed_timestamp)
1312 nat_free_session_data (sm, s0, thread_index, 0);
1313 nat_ed_session_delete (sm, s0, thread_index, 1);
1320 if (is_output_feature)
1323 (nat44_ed_not_translate_output_feature
1324 (sm, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
1325 vnet_buffer (b0)->ip.reass.l4_dst_port, thread_index,
1327 vnet_buffer (b0)->sw_if_index[VLIB_TX])))
1331 * Send DHCP packets to the ipv4 stack, or we won't
1332 * be able to use dhcp client on the outside interface
1335 (proto0 == NAT_PROTOCOL_UDP
1336 && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
1337 clib_host_to_net_u16 (UDP_DST_PORT_dhcp_to_server))
1338 && ip0->dst_address.as_u32 == 0xffffffff))
1344 (nat44_ed_not_translate
1345 (sm, node, sw_if_index0, ip0, proto0, rx_fib_index0,
1351 slow_path_ed (sm, b0, ip0->src_address, ip0->dst_address,
1352 vnet_buffer (b0)->ip.reass.l4_src_port,
1353 vnet_buffer (b0)->ip.reass.l4_dst_port,
1354 ip0->protocol, rx_fib_index0, &s0, node, next0,
1357 if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
1360 if (PREDICT_FALSE (!s0))
1365 b0->flags |= VNET_BUFFER_F_IS_NATED;
1367 if (!is_output_feature)
1368 vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
1370 old_addr0 = ip0->src_address.as_u32;
1371 new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
1372 sum0 = ip0->checksum;
1373 sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1375 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1376 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1377 s0->ext_host_addr.as_u32, ip4_header_t,
1379 ip0->checksum = ip_csum_fold (sum0);
1381 old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
1383 if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
1385 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1387 new_port0 = udp0->src_port = s0->out2in.port;
1388 sum0 = tcp0->checksum;
1390 ip_csum_update (sum0, old_addr0, new_addr0,
1391 ip4_header_t, dst_address);
1393 ip_csum_update (sum0, old_port0, new_port0,
1394 ip4_header_t, length);
1395 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1398 ip_csum_update (sum0, ip0->dst_address.as_u32,
1399 s0->ext_host_addr.as_u32,
1400 ip4_header_t, dst_address);
1402 ip_csum_update (sum0,
1403 vnet_buffer (b0)->ip.
1404 reass.l4_dst_port, s0->ext_host_port,
1405 ip4_header_t, length);
1406 tcp0->dst_port = s0->ext_host_port;
1407 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1409 mss_clamping (sm, tcp0, &sum0);
1410 tcp0->checksum = ip_csum_fold (sum0);
1413 if (nat44_set_tcp_session_state_i2o
1414 (sm, now, s0, b0, thread_index))
1417 else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
1420 new_port0 = udp0->src_port = s0->out2in.port;
1421 sum0 = udp0->checksum;
1423 ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1426 ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
1428 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1430 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1431 s0->ext_host_addr.as_u32,
1432 ip4_header_t, dst_address);
1434 ip_csum_update (sum0,
1435 vnet_buffer (b0)->ip.reass.l4_dst_port,
1436 s0->ext_host_port, ip4_header_t, length);
1437 udp0->dst_port = s0->ext_host_port;
1438 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1440 udp0->checksum = ip_csum_fold (sum0);
1445 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1447 new_port0 = udp0->src_port = s0->out2in.port;
1448 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1450 udp0->dst_port = s0->ext_host_port;
1451 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1458 nat44_session_update_counters (s0, now,
1459 vlib_buffer_length_in_chain
1460 (vm, b0), thread_index);
1461 /* Per-user LRU list maintenance */
1462 nat44_session_update_lru (sm, s0, thread_index);
1465 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
1466 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
1468 nat_in2out_ed_trace_t *t =
1469 vlib_add_trace (vm, node, b0, sizeof (*t));
1470 t->sw_if_index = sw_if_index0;
1471 t->next_index = next0;
1472 t->is_slow_path = 1;
1475 t->session_index = s0 - tsm->sessions;
1477 t->session_index = ~0;
1480 pkts_processed += next0 == vnet_buffer2 (b0)->nat.arc_next;
1482 /* verify speculative enqueue, maybe switch current next frame */
1483 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1484 to_next, n_left_to_next,
1488 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1491 vlib_node_increment_counter (vm, stats_node_index,
1492 NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
1494 vlib_node_increment_counter (vm, stats_node_index,
1495 NAT_IN2OUT_ED_ERROR_TCP_PACKETS, tcp_packets);
1496 vlib_node_increment_counter (vm, stats_node_index,
1497 NAT_IN2OUT_ED_ERROR_UDP_PACKETS, udp_packets);
1498 vlib_node_increment_counter (vm, stats_node_index,
1499 NAT_IN2OUT_ED_ERROR_ICMP_PACKETS,
1501 vlib_node_increment_counter (vm, stats_node_index,
1502 NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
1504 return frame->n_vectors;
1507 VLIB_NODE_FN (nat44_ed_in2out_node) (vlib_main_t * vm,
1508 vlib_node_runtime_t * node,
1509 vlib_frame_t * frame)
1511 return nat44_ed_in2out_fast_path_node_fn_inline (vm, node, frame, 0);
1515 VLIB_REGISTER_NODE (nat44_ed_in2out_node) = {
1516 .name = "nat44-ed-in2out",
1517 .vector_size = sizeof (u32),
1518 .sibling_of = "nat-default",
1519 .format_trace = format_nat_in2out_ed_trace,
1520 .type = VLIB_NODE_TYPE_INTERNAL,
1521 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1522 .error_strings = nat_in2out_ed_error_strings,
1523 .runtime_data_bytes = sizeof (snat_runtime_t),
1527 VLIB_NODE_FN (nat44_ed_in2out_output_node) (vlib_main_t * vm,
1528 vlib_node_runtime_t * node,
1529 vlib_frame_t * frame)
1531 return nat44_ed_in2out_fast_path_node_fn_inline (vm, node, frame, 1);
1535 VLIB_REGISTER_NODE (nat44_ed_in2out_output_node) = {
1536 .name = "nat44-ed-in2out-output",
1537 .vector_size = sizeof (u32),
1538 .sibling_of = "nat-default",
1539 .format_trace = format_nat_in2out_ed_trace,
1540 .type = VLIB_NODE_TYPE_INTERNAL,
1541 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1542 .error_strings = nat_in2out_ed_error_strings,
1543 .runtime_data_bytes = sizeof (snat_runtime_t),
1547 VLIB_NODE_FN (nat44_ed_in2out_slowpath_node) (vlib_main_t * vm,
1548 vlib_node_runtime_t *
1549 node, vlib_frame_t * frame)
1551 return nat44_ed_in2out_slow_path_node_fn_inline (vm, node, frame, 0);
1555 VLIB_REGISTER_NODE (nat44_ed_in2out_slowpath_node) = {
1556 .name = "nat44-ed-in2out-slowpath",
1557 .vector_size = sizeof (u32),
1558 .sibling_of = "nat-default",
1559 .format_trace = format_nat_in2out_ed_trace,
1560 .type = VLIB_NODE_TYPE_INTERNAL,
1561 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1562 .error_strings = nat_in2out_ed_error_strings,
1563 .runtime_data_bytes = sizeof (snat_runtime_t),
1567 VLIB_NODE_FN (nat44_ed_in2out_output_slowpath_node) (vlib_main_t * vm,
1570 vlib_frame_t * frame)
1572 return nat44_ed_in2out_slow_path_node_fn_inline (vm, node, frame, 1);
1576 VLIB_REGISTER_NODE (nat44_ed_in2out_output_slowpath_node) = {
1577 .name = "nat44-ed-in2out-output-slowpath",
1578 .vector_size = sizeof (u32),
1579 .sibling_of = "nat-default",
1580 .format_trace = format_nat_in2out_ed_trace,
1581 .type = VLIB_NODE_TYPE_INTERNAL,
1582 .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
1583 .error_strings = nat_in2out_ed_error_strings,
1584 .runtime_data_bytes = sizeof (snat_runtime_t),
1589 format_nat_pre_trace (u8 * s, va_list * args)
1591 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1592 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1593 nat_pre_trace_t *t = va_arg (*args, nat_pre_trace_t *);
1594 return format (s, "in2out next_index %d arc_next_index %d", t->next_index,
1598 VLIB_NODE_FN (nat_pre_in2out_node)
1599 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
1601 return nat_pre_node_fn_inline (vm, node, frame,
1602 NAT_NEXT_IN2OUT_ED_FAST_PATH);
1606 VLIB_REGISTER_NODE (nat_pre_in2out_node) = {
1607 .name = "nat-pre-in2out",
1608 .vector_size = sizeof (u32),
1609 .sibling_of = "nat-default",
1610 .format_trace = format_nat_pre_trace,
1611 .type = VLIB_NODE_TYPE_INTERNAL,
1617 * fd.io coding-style-patch-verification: ON
1620 * eval: (c-set-style "gnu")