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>
35 #include <nat/lib/nat_inlines.h>
37 static char *nat_in2out_ed_error_strings[] = {
38 #define _(sym,string) string,
39 foreach_nat_in2out_ed_error
49 } nat_in2out_ed_trace_t;
52 format_nat_in2out_ed_trace (u8 * s, va_list * args)
54 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
55 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
56 nat_in2out_ed_trace_t *t = va_arg (*args, nat_in2out_ed_trace_t *);
60 t->is_slow_path ? "NAT44_IN2OUT_ED_SLOW_PATH" :
61 "NAT44_IN2OUT_ED_FAST_PATH";
63 s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag,
64 t->sw_if_index, t->next_index, t->session_index);
69 #ifndef CLIB_MARCH_VARIANT
71 nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg)
73 snat_main_t *sm = &snat_main;
74 nat44_is_idle_session_ctx_t *ctx = arg;
76 u64 sess_timeout_time;
79 ip4_address_t *l_addr, *r_addr;
81 clib_bihash_kv_16_8_t ed_kv;
84 snat_session_key_t key;
85 snat_main_per_thread_data_t *tsm = vec_elt_at_index (sm->per_thread_data,
88 ASSERT (ctx->thread_index == ed_value_get_thread_index (kv));
89 s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (kv));
90 sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s);
91 if (ctx->now >= sess_timeout_time)
93 if (is_fwd_bypass_session (s))
96 l_addr = &s->out2in.addr;
97 r_addr = &s->ext_host_addr;
98 fib_index = s->out2in.fib_index;
99 if (snat_is_unk_proto_session (s))
101 proto = s->in2out.port;
107 proto = nat_proto_to_ip_proto (s->in2out.protocol);
108 l_port = s->out2in.port;
109 r_port = s->ext_host_port;
111 make_ed_kv (l_addr, r_addr, proto, fib_index, l_port, r_port, ~0, ~0,
113 if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &ed_kv, 0))
114 nat_elog_warn ("out2in_ed key del failed");
116 if (snat_is_unk_proto_session (s))
119 snat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
120 s->in2out.addr.as_u32,
121 s->out2in.addr.as_u32,
125 s->in2out.fib_index);
127 nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
128 &s->in2out.addr, s->in2out.port,
129 &s->ext_host_nat_addr, s->ext_host_nat_port,
130 &s->out2in.addr, s->out2in.port,
131 &s->ext_host_addr, s->ext_host_port,
132 s->in2out.protocol, is_twice_nat_session (s));
134 nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
135 s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
138 if (is_twice_nat_session (s))
140 for (i = 0; i < vec_len (sm->twice_nat_addresses); i++)
142 key.protocol = s->in2out.protocol;
143 key.port = s->ext_host_nat_port;
144 a = sm->twice_nat_addresses + i;
145 if (a->addr.as_u32 == s->ext_host_nat_addr.as_u32)
147 snat_free_outside_address_and_port (sm->twice_nat_addresses,
155 if (snat_is_session_static (s))
158 snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
161 nat_ed_session_delete (sm, s, ctx->thread_index, 1);
170 icmp_in2out_ed_slow_path (snat_main_t * sm, vlib_buffer_t * b0,
171 ip4_header_t * ip0, icmp46_header_t * icmp0,
172 u32 sw_if_index0, u32 rx_fib_index0,
173 vlib_node_runtime_t * node, u32 next0, f64 now,
174 u32 thread_index, snat_session_t ** p_s0)
176 vlib_main_t *vm = vlib_get_main ();
178 next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
179 next0, thread_index, p_s0, 0);
180 snat_session_t *s0 = *p_s0;
181 if (PREDICT_TRUE (next0 != NAT_NEXT_DROP && s0))
184 nat44_session_update_counters (s0, now,
185 vlib_buffer_length_in_chain
186 (vm, b0), thread_index);
187 /* Per-user LRU list maintenance */
188 nat44_session_update_lru (sm, s0, thread_index);
193 static_always_inline u16
194 snat_random_port (u16 min, u16 max)
196 snat_main_t *sm = &snat_main;
197 return min + random_u32 (&sm->random_seed) /
198 (random_u32_max () / (max - min + 1) + 1);
202 nat_ed_alloc_addr_and_port (snat_main_t * sm, u32 rx_fib_index,
203 u32 nat_proto, u32 thread_index,
204 ip4_address_t r_addr, u16 r_port, u8 proto,
205 u16 port_per_thread, u32 snat_thread_index,
207 ip4_address_t * allocated_addr,
208 u16 * allocated_port,
209 clib_bihash_kv_16_8_t * out2in_ed_kv)
212 snat_address_t *a, *ga = 0;
214 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
216 const u16 port_thread_offset = (port_per_thread * snat_thread_index) + 1024;
218 for (i = 0; i < vec_len (sm->addresses); i++)
220 a = sm->addresses + i;
223 #define _(N, j, n, unused) \
224 case NAT_PROTOCOL_##N: \
225 if (a->fib_index == rx_fib_index) \
227 u16 port = snat_random_port (1, port_per_thread); \
228 u16 attempts = port_per_thread; \
229 while (attempts > 0) \
232 portnum = port_thread_offset + port; \
233 make_ed_kv (&a->addr, &r_addr, proto, s->out2in.fib_index, \
234 clib_host_to_net_u16 (portnum), r_port, thread_index, \
235 s - tsm->sessions, out2in_ed_kv); \
236 int rv = clib_bihash_add_del_16_8 (&sm->out2in_ed, out2in_ed_kv, \
240 ++a->busy_##n##_port_refcounts[portnum]; \
241 a->busy_##n##_ports_per_thread[thread_index]++; \
242 a->busy_##n##_ports++; \
243 *allocated_addr = a->addr; \
244 *allocated_port = clib_host_to_net_u16 (portnum); \
247 port = (port + 1) % port_per_thread; \
250 else if (a->fib_index == ~0) \
256 foreach_nat_protocol;
258 nat_elog_info ("unknown protocol");
265 /* fake fib_index to reuse macro */
270 foreach_nat_protocol;
272 nat_elog_info ("unknown protocol");
279 /* Totally out of translations to use... */
280 snat_ipfix_logging_addresses_exhausted (thread_index, 0);
284 static_always_inline u32
285 nat_outside_fib_index_lookup (snat_main_t * sm, ip4_address_t addr)
287 fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
288 nat_outside_fib_t *outside_fib;
290 .fp_proto = FIB_PROTOCOL_IP4,
292 .fp_addr = {.ip4.as_u32 = addr.as_u32,}
295 // TODO: multiple vrfs none can resolve addr
297 vec_foreach (outside_fib, sm->outside_fibs)
299 fei = fib_table_lookup (outside_fib->fib_index, &pfx);
300 if (FIB_NODE_INDEX_INVALID != fei)
302 if (fib_entry_get_resolving_interface (fei) != ~0)
304 return outside_fib->fib_index;
313 slow_path_ed (snat_main_t * sm,
315 ip4_address_t l_addr,
316 ip4_address_t r_addr,
321 snat_session_t ** sessionp,
322 vlib_node_runtime_t * node, u32 next, u32 thread_index, f64 now)
325 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
326 clib_bihash_kv_16_8_t out2in_ed_kv;
327 nat44_is_idle_session_ctx_t ctx;
328 snat_session_key_t key0, key1;
329 ip4_address_t allocated_addr;
334 u32 nat_proto = ip_proto_to_nat_proto (proto);
335 snat_session_t *s = NULL;
336 lb_nat_type_t lb = 0;
338 if (PREDICT_TRUE (nat_proto == NAT_PROTOCOL_TCP))
342 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
344 b->error = node->errors[NAT_IN2OUT_ED_ERROR_NON_SYN];
345 return NAT_NEXT_DROP;
350 (nat44_ed_maximum_sessions_exceeded (sm, rx_fib_index, thread_index)))
352 if (!nat_lru_free_one (sm, thread_index, now))
354 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
355 nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
356 nat_elog_notice ("maximum sessions exceeded");
357 return NAT_NEXT_DROP;
363 key1.protocol = key0.protocol = nat_proto;
364 key0.fib_index = rx_fib_index;
365 key1.fib_index = sm->outside_fib_index;
366 tx_fib_index = sm->outside_fib_index;
368 /* First try to match static mapping by local address and port */
369 if (snat_static_mapping_match
370 (sm, key0, &key1, 0, 0, 0, &lb, 0, &identity_nat))
372 s = nat_ed_session_alloc (sm, thread_index, now, proto);
375 nat_elog_warn ("create NAT session failed");
376 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
377 return NAT_NEXT_DROP;
379 switch (vec_len (sm->outside_fibs))
382 tx_fib_index = sm->outside_fib_index;
385 tx_fib_index = sm->outside_fibs[0].fib_index;
388 tx_fib_index = nat_outside_fib_index_lookup (sm, r_addr);
392 s->out2in.fib_index = tx_fib_index;
393 /* Try to create dynamic translation */
394 if (nat_ed_alloc_addr_and_port (sm, rx_fib_index, nat_proto,
395 thread_index, r_addr, r_port, proto,
397 tsm->snat_thread_index, s,
399 &allocated_port, &out2in_ed_kv))
401 nat_elog_notice ("addresses exhausted");
402 b->error = node->errors[NAT_IN2OUT_ED_ERROR_OUT_OF_PORTS];
403 nat_ed_session_delete (sm, s, thread_index, 1);
404 return NAT_NEXT_DROP;
406 key1.addr = allocated_addr;
407 key1.port = allocated_port;
411 if (PREDICT_FALSE (identity_nat))
416 s = nat_ed_session_alloc (sm, thread_index, now, proto);
419 nat_elog_warn ("create NAT session failed");
420 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
421 return NAT_NEXT_DROP;
423 switch (vec_len (sm->outside_fibs))
426 tx_fib_index = sm->outside_fib_index;
429 tx_fib_index = sm->outside_fibs[0].fib_index;
432 tx_fib_index = nat_outside_fib_index_lookup (sm, r_addr);
436 s->out2in.fib_index = tx_fib_index;
437 s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
439 make_ed_kv (&key1.addr, &r_addr, proto,
440 s->out2in.fib_index, key1.port, r_port, thread_index,
441 s - tsm->sessions, &out2in_ed_kv);
442 if (clib_bihash_add_or_overwrite_stale_16_8
443 (&sm->out2in_ed, &out2in_ed_kv, nat44_o2i_ed_is_idle_session_cb,
445 nat_elog_notice ("out2in-ed key add failed");
449 s->flags |= SNAT_SESSION_FLAG_LOAD_BALANCING;
450 s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
451 s->ext_host_addr = r_addr;
452 s->ext_host_port = r_port;
455 s->out2in.fib_index = tx_fib_index;
456 s->out2in.protocol = key0.protocol;
458 clib_bihash_kv_16_8_t in2out_ed_kv;
459 make_ed_kv (&l_addr, &r_addr, proto, rx_fib_index, l_port, r_port,
460 thread_index, s - tsm->sessions, &in2out_ed_kv);
462 ctx.thread_index = thread_index;
463 if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->in2out_ed, &in2out_ed_kv,
464 nat44_i2o_ed_is_idle_session_cb,
466 nat_elog_notice ("in2out-ed key add failed");
471 snat_ipfix_logging_nat44_ses_create (thread_index,
472 s->in2out.addr.as_u32,
473 s->out2in.addr.as_u32,
476 s->out2in.port, s->in2out.fib_index);
478 nat_syslog_nat44_sadd (s->user_index, s->in2out.fib_index,
479 &s->in2out.addr, s->in2out.port,
480 &s->ext_host_nat_addr, s->ext_host_nat_port,
481 &s->out2in.addr, s->out2in.port,
482 &s->ext_host_addr, s->ext_host_port,
483 s->in2out.protocol, 0);
485 nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
486 s->out2in.port, &s->ext_host_addr, s->ext_host_port,
487 &s->ext_host_nat_addr, s->ext_host_nat_port,
488 s->in2out.protocol, s->in2out.fib_index, s->flags,
494 static_always_inline int
495 nat44_ed_not_translate (snat_main_t * sm, vlib_node_runtime_t * node,
496 u32 sw_if_index, ip4_header_t * ip, u32 proto,
497 u32 rx_fib_index, u32 thread_index)
499 udp_header_t *udp = ip4_next_header (ip);
500 clib_bihash_kv_16_8_t kv, value;
501 snat_session_key_t key0, key1;
503 make_ed_kv (&ip->dst_address, &ip->src_address, ip->protocol,
504 sm->outside_fib_index, udp->dst_port, udp->src_port, ~0, ~0,
507 /* NAT packet aimed at external address if has active sessions */
508 if (clib_bihash_search_16_8 (&sm->out2in_ed, &kv, &value))
510 key0.addr = ip->dst_address;
511 key0.port = udp->dst_port;
512 key0.protocol = proto;
513 key0.fib_index = sm->outside_fib_index;
514 /* or is static mappings */
515 if (!snat_static_mapping_match (sm, key0, &key1, 1, 0, 0, 0, 0, 0))
521 if (sm->forwarding_enabled)
524 return snat_not_translate_fast (sm, node, sw_if_index, ip, proto,
528 static_always_inline int
529 nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
530 u32 thread_index, f64 now,
531 vlib_main_t * vm, vlib_buffer_t * b)
533 clib_bihash_kv_16_8_t kv, value;
534 snat_session_t *s = 0;
535 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
537 if (!sm->forwarding_enabled)
540 if (ip->protocol == IP_PROTOCOL_ICMP)
542 if (get_icmp_i2o_ed_key (b, ip, 0, ~0, ~0, 0, 0, 0, &kv))
545 else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
547 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol, 0,
548 vnet_buffer (b)->ip.reass.l4_src_port,
549 vnet_buffer (b)->ip.reass.l4_dst_port, ~0, ~0, &kv);
553 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol, 0, 0,
557 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
559 ASSERT (thread_index == ed_value_get_thread_index (&value));
561 pool_elt_at_index (tsm->sessions,
562 ed_value_get_session_index (&value));
563 if (is_fwd_bypass_session (s))
565 if (ip->protocol == IP_PROTOCOL_TCP)
567 if (nat44_set_tcp_session_state_i2o
568 (sm, now, s, b, thread_index))
572 nat44_session_update_counters (s, now,
573 vlib_buffer_length_in_chain (vm, b),
575 /* Per-user LRU list maintenance */
576 nat44_session_update_lru (sm, s, thread_index);
586 static_always_inline int
587 nat44_ed_not_translate_output_feature (snat_main_t * sm, ip4_header_t * ip,
588 u16 src_port, u16 dst_port,
589 u32 thread_index, u32 rx_sw_if_index,
592 clib_bihash_kv_16_8_t kv, value;
593 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
596 u32 rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (rx_sw_if_index);
597 u32 tx_fib_index = ip4_fib_table_get_index_for_sw_if_index (tx_sw_if_index);
600 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol,
601 tx_fib_index, src_port, dst_port, ~0, ~0, &kv);
602 if (!clib_bihash_search_16_8 (&sm->out2in_ed, &kv, &value))
604 ASSERT (thread_index == ed_value_get_thread_index (&value));
606 pool_elt_at_index (tsm->sessions,
607 ed_value_get_session_index (&value));
608 if (nat44_is_ses_closed (s))
610 nat_free_session_data (sm, s, thread_index, 0);
611 nat_ed_session_delete (sm, s, thread_index, 1);
614 s->flags |= SNAT_SESSION_FLAG_OUTPUT_FEATURE;
619 make_ed_kv (&ip->dst_address, &ip->src_address, ip->protocol,
620 rx_fib_index, dst_port, src_port, ~0, ~0, &kv);
621 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
623 ASSERT (thread_index == ed_value_get_thread_index (&value));
625 pool_elt_at_index (tsm->sessions,
626 ed_value_get_session_index (&value));
627 if (is_fwd_bypass_session (s))
632 pool_foreach (i, sm->output_feature_interfaces,
634 if ((nat_interface_is_inside (i)) && (rx_sw_if_index == i->sw_if_index))
644 #ifndef CLIB_MARCH_VARIANT
646 icmp_match_in2out_ed (snat_main_t * sm, vlib_node_runtime_t * node,
647 u32 thread_index, vlib_buffer_t * b, ip4_header_t * ip,
648 u8 * p_proto, snat_session_key_t * p_value,
649 u8 * p_dont_translate, void *d, void *e)
653 snat_session_t *s = 0;
654 u8 dont_translate = 0;
655 clib_bihash_kv_16_8_t kv, value;
658 u16 l_port = 0, r_port = 0; // initialize to workaround gcc warning
659 vlib_main_t *vm = vlib_get_main ();
660 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
662 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
663 rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
666 get_icmp_i2o_ed_key (b, ip, rx_fib_index, ~0, ~0, p_proto, &l_port,
670 b->error = node->errors[err];
671 next = NAT_NEXT_DROP;
675 if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
677 if (vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0)
680 (nat44_ed_not_translate_output_feature
681 (sm, ip, l_port, r_port, thread_index,
682 sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_TX])))
690 if (PREDICT_FALSE (nat44_ed_not_translate (sm, node, sw_if_index,
691 ip, NAT_PROTOCOL_ICMP,
701 (icmp_type_is_error_message
702 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
704 b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
705 next = NAT_NEXT_DROP;
710 slow_path_ed (sm, b, ip->src_address, ip->dst_address, l_port, r_port,
711 ip->protocol, rx_fib_index, &s, node, next,
712 thread_index, vlib_time_now (vm));
714 if (PREDICT_FALSE (next == NAT_NEXT_DROP))
726 (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
728 && vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
730 && !icmp_type_is_error_message (vnet_buffer (b)->ip.
731 reass.icmp_type_or_tcp_flags)))
733 b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
734 next = NAT_NEXT_DROP;
738 ASSERT (thread_index == ed_value_get_thread_index (&value));
740 pool_elt_at_index (tsm->sessions,
741 ed_value_get_session_index (&value));
745 *p_value = s->out2in;
746 *p_dont_translate = dont_translate;
748 *(snat_session_t **) d = s;
753 static snat_session_t *
754 nat44_ed_in2out_unknown_proto (snat_main_t * sm,
760 vlib_main_t * vm, vlib_node_runtime_t * node)
762 clib_bihash_kv_8_8_t kv, value;
763 clib_bihash_kv_16_8_t s_kv, s_value;
764 snat_static_mapping_t *m;
765 u32 old_addr, new_addr = 0;
767 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
769 u32 outside_fib_index = sm->outside_fib_index;
773 switch (vec_len (sm->outside_fibs))
776 outside_fib_index = sm->outside_fib_index;
779 outside_fib_index = sm->outside_fibs[0].fib_index;
782 outside_fib_index = nat_outside_fib_index_lookup (sm, ip->dst_address);
785 old_addr = ip->src_address.as_u32;
787 make_ed_kv (&ip->src_address, &ip->dst_address, ip->protocol,
788 rx_fib_index, 0, 0, ~0, ~0, &s_kv);
790 if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &s_kv, &s_value))
792 ASSERT (thread_index == ed_value_get_thread_index (&s_value));
794 pool_elt_at_index (tsm->sessions,
795 ed_value_get_session_index (&s_value));
796 new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
801 (nat44_ed_maximum_sessions_exceeded
802 (sm, rx_fib_index, thread_index)))
804 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
805 nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
806 nat_elog_notice ("maximum sessions exceeded");
810 make_sm_kv (&kv, &ip->src_address, 0, rx_fib_index, 0);
812 /* Try to find static mapping first */
813 if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
815 m = pool_elt_at_index (sm->static_mappings, value.value);
816 new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
823 pool_foreach (s, tsm->sessions, {
824 if (s->ext_host_addr.as_u32 == ip->dst_address.as_u32)
826 new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
828 make_ed_kv (&s->out2in.addr, &ip->dst_address, ip->protocol,
829 outside_fib_index, 0, 0, ~0, ~0, &s_kv);
830 if (clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value))
838 for (i = 0; i < vec_len (sm->addresses); i++)
840 make_ed_kv (&sm->addresses[i].addr, &ip->dst_address,
841 ip->protocol, outside_fib_index, 0, 0, ~0, ~0,
843 if (clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value))
845 new_addr = ip->src_address.as_u32 =
846 sm->addresses[i].addr.as_u32;
854 s = nat_ed_session_alloc (sm, thread_index, now, ip->protocol);
857 b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_USER_SESS_EXCEEDED];
858 nat_elog_warn ("create NAT session failed");
862 s->ext_host_addr.as_u32 = ip->dst_address.as_u32;
863 s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
864 s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
865 s->out2in.addr.as_u32 = new_addr;
866 s->out2in.fib_index = outside_fib_index;
867 s->in2out.addr.as_u32 = old_addr;
868 s->in2out.fib_index = rx_fib_index;
869 s->in2out.port = s->out2in.port = ip->protocol;
871 s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
873 /* Add to lookup tables */
874 make_ed_kv (&s->in2out.addr, &ip->dst_address, ip->protocol,
875 rx_fib_index, 0, 0, thread_index, s - tsm->sessions, &s_kv);
876 if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &s_kv, 1))
877 nat_elog_notice ("in2out key add failed");
879 make_ed_kv (&s->out2in.addr, &ip->dst_address, ip->protocol,
880 outside_fib_index, 0, 0, thread_index, s - tsm->sessions,
882 if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &s_kv, 1))
883 nat_elog_notice ("out2in key add failed");
886 /* Update IP checksum */
888 sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, src_address);
889 ip->checksum = ip_csum_fold (sum);
892 nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b),
894 /* Per-user LRU list maintenance */
895 nat44_session_update_lru (sm, s, thread_index);
898 if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
899 nat44_ed_hairpinning_unknown_proto (sm, b, ip);
901 if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
902 vnet_buffer (b)->sw_if_index[VLIB_TX] = outside_fib_index;
908 nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t * vm,
909 vlib_node_runtime_t * node,
910 vlib_frame_t * frame,
911 int is_output_feature)
913 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
914 nat_next_t next_index;
915 snat_main_t *sm = &snat_main;
916 f64 now = vlib_time_now (vm);
917 u32 thread_index = vm->thread_index;
918 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
919 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
922 def_slow = is_output_feature ? NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH :
923 NAT_NEXT_IN2OUT_ED_SLOW_PATH;
925 stats_node_index = sm->ed_in2out_node_index;
927 from = vlib_frame_vector_args (frame);
928 n_left_from = frame->n_vectors;
929 next_index = node->cached_next_index;
931 while (n_left_from > 0)
935 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
937 while (n_left_from > 0 && n_left_to_next > 0)
941 u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
942 new_addr0, old_addr0;
943 u16 old_port0, new_port0;
947 snat_session_t *s0 = 0;
948 clib_bihash_kv_16_8_t kv0, value0;
951 /* speculatively enqueue b0 to the current next frame */
959 b0 = vlib_get_buffer (vm, bi0);
961 if (is_output_feature)
963 vnet_feature_next (&vnet_buffer2 (b0)->nat.arc_next, b0);
964 iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
967 next0 = vnet_buffer2 (b0)->nat.arc_next;
969 ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
972 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
974 fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
977 if (PREDICT_FALSE (ip0->ttl == 1))
979 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
980 icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
981 ICMP4_time_exceeded_ttl_exceeded_in_transit,
983 next0 = NAT_NEXT_ICMP_ERROR;
987 udp0 = ip4_next_header (ip0);
988 tcp0 = (tcp_header_t *) udp0;
989 proto0 = ip_proto_to_nat_proto (ip0->protocol);
991 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
997 if (is_output_feature)
999 if (PREDICT_FALSE (nat_not_translate_output_feature_fwd
1000 (sm, ip0, thread_index, now, vm, b0)))
1004 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
1010 make_ed_kv (&ip0->src_address, &ip0->dst_address,
1011 ip0->protocol, rx_fib_index0,
1012 vnet_buffer (b0)->ip.reass.l4_src_port,
1013 vnet_buffer (b0)->ip.reass.l4_dst_port, ~0, ~0, &kv0);
1015 // lookup for session
1016 if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
1018 // session does not exist go slow path
1022 ASSERT (thread_index == ed_value_get_thread_index (&value0));
1024 pool_elt_at_index (tsm->sessions,
1025 ed_value_get_session_index (&value0));
1027 if (s0->tcp_closed_timestamp)
1029 if (now >= s0->tcp_closed_timestamp)
1031 // session is closed, go slow path
1036 // session in transitory timeout, drop
1037 b0->error = node->errors[NAT_IN2OUT_ED_ERROR_TCP_CLOSED];
1038 next0 = NAT_NEXT_DROP;
1043 // drop if session expired
1044 u64 sess_timeout_time;
1045 sess_timeout_time = s0->last_heard +
1046 (f64) nat44_session_get_timeout (sm, s0);
1047 if (now >= sess_timeout_time)
1049 nat_free_session_data (sm, s0, thread_index, 0);
1050 nat_ed_session_delete (sm, s0, thread_index, 1);
1051 // session is closed, go slow path
1056 b0->flags |= VNET_BUFFER_F_IS_NATED;
1058 if (!is_output_feature)
1059 vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
1061 old_addr0 = ip0->src_address.as_u32;
1062 new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
1063 sum0 = ip0->checksum;
1064 sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1066 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1067 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1068 s0->ext_host_addr.as_u32, ip4_header_t,
1070 ip0->checksum = ip_csum_fold (sum0);
1072 old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
1074 if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
1076 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1078 new_port0 = udp0->src_port = s0->out2in.port;
1079 sum0 = tcp0->checksum;
1081 ip_csum_update (sum0, old_addr0, new_addr0,
1082 ip4_header_t, dst_address);
1084 ip_csum_update (sum0, old_port0, new_port0,
1085 ip4_header_t, length);
1086 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1089 ip_csum_update (sum0, ip0->dst_address.as_u32,
1090 s0->ext_host_addr.as_u32,
1091 ip4_header_t, dst_address);
1093 ip_csum_update (sum0,
1094 vnet_buffer (b0)->ip.
1095 reass.l4_dst_port, s0->ext_host_port,
1096 ip4_header_t, length);
1097 tcp0->dst_port = s0->ext_host_port;
1098 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1100 mss_clamping (sm->mss_clamping, tcp0, &sum0);
1101 tcp0->checksum = ip_csum_fold (sum0);
1104 if (nat44_set_tcp_session_state_i2o
1105 (sm, now, s0, b0, thread_index))
1108 else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
1111 new_port0 = udp0->src_port = s0->out2in.port;
1112 sum0 = udp0->checksum;
1114 ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
1117 ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
1119 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1121 sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
1122 s0->ext_host_addr.as_u32,
1123 ip4_header_t, dst_address);
1125 ip_csum_update (sum0,
1126 vnet_buffer (b0)->ip.reass.l4_dst_port,
1127 s0->ext_host_port, ip4_header_t, length);
1128 udp0->dst_port = s0->ext_host_port;
1129 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1131 udp0->checksum = ip_csum_fold (sum0);
1136 if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
1138 new_port0 = udp0->src_port = s0->out2in.port;
1139 if (PREDICT_FALSE (is_twice_nat_session (s0)))
1141 udp0->dst_port = s0->ext_host_port;
1142 ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
1149 nat44_session_update_counters (s0, now,
1150 vlib_buffer_length_in_chain
1151 (vm, b0), thread_index);
1152 /* Per-user LRU list maintenance */
1153 nat44_session_update_lru (sm, s0, thread_index);
1156 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
1157 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
1159 nat_in2out_ed_trace_t *t =
1160 vlib_add_trace (vm, node, b0, sizeof (*t));
1161 t->sw_if_index = sw_if_index0;
1162 t->next_index = next0;
1163 t->is_slow_path = 0;
1166 t->session_index = s0 - tsm->sessions;
1168 t->session_index = ~0;
1171 pkts_processed += next0 == vnet_buffer2 (b0)->nat.arc_next;
1172 /* verify speculative enqueue, maybe switch current next frame */
1173 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1174 to_next, n_left_to_next,
1178 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1181 vlib_node_increment_counter (vm, stats_node_index,
1182 NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
1184 vlib_node_increment_counter (vm, stats_node_index,
1185 NAT_IN2OUT_ED_ERROR_TCP_PACKETS, tcp_packets);
1186 vlib_node_increment_counter (vm, stats_node_index,
1187 NAT_IN2OUT_ED_ERROR_UDP_PACKETS, udp_packets);
1188 vlib_node_increment_counter (vm, stats_node_index,
1189 NAT_IN2OUT_ED_ERROR_ICMP_PACKETS,
1191 vlib_node_increment_counter (vm, stats_node_index,
1192 NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
1194 return frame->n_vectors;
1198 nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t * vm,
1199 vlib_node_runtime_t * node,
1200 vlib_frame_t * frame,
1201 int is_output_feature)
1203 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
1204 nat_next_t next_index;
1205 snat_main_t *sm = &snat_main;
1206 f64 now = vlib_time_now (vm);
1207 u32 thread_index = vm->thread_index;
1208 snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
1209 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets = 0;
1211 stats_node_index = sm->ed_in2out_slowpath_node_index;
1213 from = vlib_frame_vector_args (frame);
1214 n_left_from = frame->n_vectors;
1215 next_index = node->cached_next_index;
1217 while (n_left_from > 0)
1221 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1223 while (n_left_from > 0 && n_left_to_next > 0)
1227 u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
1228 new_addr0, old_addr0;
1229 u16 old_port0, new_port0;
1233 icmp46_header_t *icmp0;
1234 snat_session_t *s0 = 0;
1235 clib_bihash_kv_16_8_t kv0, value0;
1238 /* speculatively enqueue b0 to the current next frame */
1244 n_left_to_next -= 1;
1246 b0 = vlib_get_buffer (vm, bi0);
1248 if (is_output_feature)
1249 iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
1251 next0 = vnet_buffer2 (b0)->nat.arc_next;
1253 ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
1256 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
1258 fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
1261 if (PREDICT_FALSE (ip0->ttl == 1))
1263 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
1264 icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
1265 ICMP4_time_exceeded_ttl_exceeded_in_transit,
1267 next0 = NAT_NEXT_ICMP_ERROR;
1271 udp0 = ip4_next_header (ip0);
1272 tcp0 = (tcp_header_t *) udp0;
1273 icmp0 = (icmp46_header_t *) udp0;
1274 proto0 = ip_proto_to_nat_proto (ip0->protocol);
1276 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
1278 s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
1283 next0 = NAT_NEXT_DROP;
1289 if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
1291 next0 = icmp_in2out_ed_slow_path
1292 (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
1293 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->mss_clamping, 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")