2 * Copyright (c) 2015 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.
16 * Defines used for testing various optimisation schemes
18 #define MAP_ENCAP_DUAL 0
21 #include <vnet/ip/ip_frag.h>
22 #include <vnet/ip/ip4_to_ip6.h>
24 vlib_node_registration_t ip4_map_reass_node;
28 IP4_MAP_NEXT_IP6_LOOKUP,
29 #ifdef MAP_SKIP_IP6_LOOKUP
30 IP4_MAP_NEXT_IP6_REWRITE,
32 IP4_MAP_NEXT_IP4_FRAGMENT,
33 IP4_MAP_NEXT_IP6_FRAGMENT,
35 IP4_MAP_NEXT_ICMP_ERROR,
40 enum ip4_map_reass_next_t
42 IP4_MAP_REASS_NEXT_IP6_LOOKUP,
43 IP4_MAP_REASS_NEXT_IP4_FRAGMENT,
44 IP4_MAP_REASS_NEXT_DROP,
53 } map_ip4_map_reass_trace_t;
56 format_ip4_map_reass_trace (u8 * s, va_list * args)
58 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
59 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
60 map_ip4_map_reass_trace_t *t = va_arg (*args, map_ip4_map_reass_trace_t *);
61 return format (s, "MAP domain index: %d L4 port: %u Status: %s",
62 t->map_domain_index, t->port,
63 t->cached ? "cached" : "forwarded");
66 static_always_inline u16
67 ip4_map_port_and_security_check (map_domain_t * d, ip4_header_t * ip,
68 u32 * next, u8 * error)
72 if (d->psid_length > 0)
74 if (ip4_get_fragment_offset (ip) == 0)
77 ((ip->ip_version_and_header_length != 0x45)
78 || clib_host_to_net_u16 (ip->length) < 28))
82 port = ip4_get_port (ip, 0);
85 /* Verify that port is not among the well-known ports */
86 if ((d->psid_offset > 0)
87 && (clib_net_to_host_u16 (port) <
88 (0x1 << (16 - d->psid_offset))))
90 *error = MAP_ERROR_ENCAP_SEC_CHECK;
94 if (ip4_get_fragment_more (ip))
95 *next = IP4_MAP_NEXT_REASS;
101 *error = MAP_ERROR_BAD_PROTOCOL;
106 *next = IP4_MAP_NEXT_REASS;
115 static_always_inline u32
116 ip4_map_vtcfl (ip4_header_t * ip4, vlib_buffer_t * p)
118 map_main_t *mm = &map_main;
119 u8 tc = mm->tc_copy ? ip4->tos : mm->tc;
120 u32 vtcfl = 0x6 << 28;
122 vtcfl |= vnet_buffer (p)->ip.flow_hash & 0x000fffff;
124 return (clib_host_to_net_u32 (vtcfl));
127 static_always_inline bool
128 ip4_map_ip6_lookup_bypass (vlib_buffer_t * p0, ip4_header_t * ip)
130 #ifdef MAP_SKIP_IP6_LOOKUP
131 if (FIB_NODE_INDEX_INVALID != pre_resolved[FIB_PROTOCOL_IP6].fei)
133 vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
134 pre_resolved[FIB_PROTOCOL_IP6].dpo.dpoi_index;
145 ip4_map_decrement_ttl (ip4_header_t * ip, u8 * error)
149 /* Input node should have reject packets with ttl 0. */
150 ASSERT (ip->ttl > 0);
152 u32 checksum = ip->checksum + clib_host_to_net_u16 (0x0100);
153 checksum += checksum >= 0xffff;
154 ip->checksum = checksum;
157 *error = ttl <= 0 ? IP4_ERROR_TIME_EXPIRED : *error;
159 /* Verify checksum. */
160 ASSERT (ip->checksum == ip4_header_checksum (ip));
164 ip4_map_fragment (vlib_buffer_t * b, u16 mtu, bool df, u8 * error)
166 map_main_t *mm = &map_main;
170 // TODO: Fix inner fragmentation after removed inner support from ip-frag.
171 ip_frag_set_vnet_buffer (b, /*sizeof (ip6_header_t), */ mtu,
172 IP4_FRAG_NEXT_IP6_LOOKUP,
173 IP_FRAG_FLAG_IP6_HEADER);
174 return (IP4_MAP_NEXT_IP4_FRAGMENT);
178 if (df && !mm->frag_ignore_df)
180 icmp4_error_set_vnet_buffer (b, ICMP4_destination_unreachable,
181 ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set,
183 vlib_buffer_advance (b, sizeof (ip6_header_t));
184 *error = MAP_ERROR_DF_SET;
185 return (IP4_MAP_NEXT_ICMP_ERROR);
187 ip_frag_set_vnet_buffer (b, mtu, IP6_FRAG_NEXT_IP6_LOOKUP,
188 IP_FRAG_FLAG_IP6_HEADER);
189 return (IP4_MAP_NEXT_IP6_FRAGMENT);
197 ip4_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
199 u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
200 vlib_node_runtime_t *error_node =
201 vlib_node_get_runtime (vm, ip4_map_node.index);
202 from = vlib_frame_vector_args (frame);
203 n_left_from = frame->n_vectors;
204 next_index = node->cached_next_index;
205 map_main_t *mm = &map_main;
206 vlib_combined_counter_main_t *cm = mm->domain_counters;
207 u32 thread_index = vm->thread_index;
209 while (n_left_from > 0)
211 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
214 while (n_left_from >= 4 && n_left_to_next >= 2)
217 vlib_buffer_t *p0, *p1;
218 map_domain_t *d0, *d1;
219 u8 error0 = MAP_ERROR_NONE, error1 = MAP_ERROR_NONE;
220 ip4_header_t *ip40, *ip41;
221 u16 port0 = 0, port1 = 0;
222 ip6_header_t *ip6h0, *ip6h1;
223 u32 map_domain_index0 = ~0, map_domain_index1 = ~0;
224 u32 next0 = IP4_MAP_NEXT_IP6_LOOKUP, next1 =
225 IP4_MAP_NEXT_IP6_LOOKUP;
227 /* Prefetch next iteration. */
229 vlib_buffer_t *p2, *p3;
231 p2 = vlib_get_buffer (vm, from[2]);
232 p3 = vlib_get_buffer (vm, from[3]);
234 vlib_prefetch_buffer_header (p2, STORE);
235 vlib_prefetch_buffer_header (p3, STORE);
236 /* IPv4 + 8 = 28. possibly plus -40 */
237 CLIB_PREFETCH (p2->data - 40, 68, STORE);
238 CLIB_PREFETCH (p3->data - 40, 68, STORE);
241 pi0 = to_next[0] = from[0];
242 pi1 = to_next[1] = from[1];
248 p0 = vlib_get_buffer (vm, pi0);
249 p1 = vlib_get_buffer (vm, pi1);
250 ip40 = vlib_buffer_get_current (p0);
251 ip41 = vlib_buffer_get_current (p1);
252 map_domain_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
253 d0 = ip4_map_get_domain (map_domain_index0);
254 map_domain_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
255 d1 = ip4_map_get_domain (map_domain_index1);
260 * Shared IPv4 address
262 port0 = ip4_map_port_and_security_check (d0, ip40, &next0, &error0);
263 port1 = ip4_map_port_and_security_check (d1, ip41, &next1, &error1);
265 /* Decrement IPv4 TTL */
266 ip4_map_decrement_ttl (ip40, &error0);
267 ip4_map_decrement_ttl (ip41, &error1);
269 ip40->flags_and_fragment_offset &
270 clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT);
272 ip41->flags_and_fragment_offset &
273 clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT);
276 u32 da40 = clib_net_to_host_u32 (ip40->dst_address.as_u32);
277 u32 da41 = clib_net_to_host_u32 (ip41->dst_address.as_u32);
278 u16 dp40 = clib_net_to_host_u16 (port0);
279 u16 dp41 = clib_net_to_host_u16 (port1);
280 u64 dal60 = map_get_pfx (d0, da40, dp40);
281 u64 dal61 = map_get_pfx (d1, da41, dp41);
282 u64 dar60 = map_get_sfx (d0, da40, dp40);
283 u64 dar61 = map_get_sfx (d1, da41, dp41);
284 if (dal60 == 0 && dar60 == 0 && error0 == MAP_ERROR_NONE
285 && next0 != IP4_MAP_NEXT_REASS)
286 error0 = MAP_ERROR_NO_BINDING;
287 if (dal61 == 0 && dar61 == 0 && error1 == MAP_ERROR_NONE
288 && next1 != IP4_MAP_NEXT_REASS)
289 error1 = MAP_ERROR_NO_BINDING;
291 /* construct ipv6 header */
292 vlib_buffer_advance (p0, -sizeof (ip6_header_t));
293 vlib_buffer_advance (p1, -sizeof (ip6_header_t));
294 ip6h0 = vlib_buffer_get_current (p0);
295 ip6h1 = vlib_buffer_get_current (p1);
296 vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
297 vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
299 ip6h0->ip_version_traffic_class_and_flow_label =
300 ip4_map_vtcfl (ip40, p0);
301 ip6h1->ip_version_traffic_class_and_flow_label =
302 ip4_map_vtcfl (ip41, p1);
303 ip6h0->payload_length = ip40->length;
304 ip6h1->payload_length = ip41->length;
305 ip6h0->protocol = IP_PROTOCOL_IP_IN_IP;
306 ip6h1->protocol = IP_PROTOCOL_IP_IN_IP;
307 ip6h0->hop_limit = 0x40;
308 ip6h1->hop_limit = 0x40;
309 ip6h0->src_address = d0->ip6_src;
310 ip6h1->src_address = d1->ip6_src;
311 ip6h0->dst_address.as_u64[0] = clib_host_to_net_u64 (dal60);
312 ip6h0->dst_address.as_u64[1] = clib_host_to_net_u64 (dar60);
313 ip6h1->dst_address.as_u64[0] = clib_host_to_net_u64 (dal61);
314 ip6h1->dst_address.as_u64[1] = clib_host_to_net_u64 (dar61);
317 * Determine next node. Can be one of:
318 * ip6-lookup, ip6-rewrite, ip4-fragment, ip4-virtreass, error-drop
320 if (PREDICT_TRUE (error0 == MAP_ERROR_NONE))
324 && (clib_net_to_host_u16 (ip6h0->payload_length) +
325 sizeof (*ip6h0) > d0->mtu)))
327 next0 = ip4_map_fragment (p0, d0->mtu, df0, &error0);
332 ip4_map_ip6_lookup_bypass (p0,
334 IP4_MAP_NEXT_IP6_REWRITE : next0;
335 vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX,
337 map_domain_index0, 1,
339 (ip6h0->payload_length) +
345 next0 = IP4_MAP_NEXT_DROP;
349 * Determine next node. Can be one of:
350 * ip6-lookup, ip6-rewrite, ip4-fragment, ip4-virtreass, error-drop
352 if (PREDICT_TRUE (error1 == MAP_ERROR_NONE))
356 && (clib_net_to_host_u16 (ip6h1->payload_length) +
357 sizeof (*ip6h1) > d1->mtu)))
359 next1 = ip4_map_fragment (p1, d1->mtu, df1, &error1);
364 ip4_map_ip6_lookup_bypass (p1,
366 IP4_MAP_NEXT_IP6_REWRITE : next1;
367 vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX,
369 map_domain_index1, 1,
371 (ip6h1->payload_length) +
377 next1 = IP4_MAP_NEXT_DROP;
380 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
382 map_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof (*tr));
383 tr->map_domain_index = map_domain_index0;
386 if (PREDICT_FALSE (p1->flags & VLIB_BUFFER_IS_TRACED))
388 map_trace_t *tr = vlib_add_trace (vm, node, p1, sizeof (*tr));
389 tr->map_domain_index = map_domain_index1;
393 p0->error = error_node->errors[error0];
394 p1->error = error_node->errors[error1];
396 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
397 n_left_to_next, pi0, pi1, next0,
401 while (n_left_from > 0 && n_left_to_next > 0)
406 u8 error0 = MAP_ERROR_NONE;
410 u32 next0 = IP4_MAP_NEXT_IP6_LOOKUP;
411 u32 map_domain_index0 = ~0;
413 pi0 = to_next[0] = from[0];
419 p0 = vlib_get_buffer (vm, pi0);
420 ip40 = vlib_buffer_get_current (p0);
421 map_domain_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
422 d0 = ip4_map_get_domain (map_domain_index0);
426 * Shared IPv4 address
428 port0 = ip4_map_port_and_security_check (d0, ip40, &next0, &error0);
430 /* Decrement IPv4 TTL */
431 ip4_map_decrement_ttl (ip40, &error0);
433 ip40->flags_and_fragment_offset &
434 clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT);
437 u32 da40 = clib_net_to_host_u32 (ip40->dst_address.as_u32);
438 u16 dp40 = clib_net_to_host_u16 (port0);
439 u64 dal60 = map_get_pfx (d0, da40, dp40);
440 u64 dar60 = map_get_sfx (d0, da40, dp40);
441 if (dal60 == 0 && dar60 == 0 && error0 == MAP_ERROR_NONE
442 && next0 != IP4_MAP_NEXT_REASS)
443 error0 = MAP_ERROR_NO_BINDING;
445 /* construct ipv6 header */
446 vlib_buffer_advance (p0, -(sizeof (ip6_header_t)));
447 ip6h0 = vlib_buffer_get_current (p0);
448 vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
450 ip6h0->ip_version_traffic_class_and_flow_label =
451 ip4_map_vtcfl (ip40, p0);
452 ip6h0->payload_length = ip40->length;
453 ip6h0->protocol = IP_PROTOCOL_IP_IN_IP;
454 ip6h0->hop_limit = 0x40;
455 ip6h0->src_address = d0->ip6_src;
456 ip6h0->dst_address.as_u64[0] = clib_host_to_net_u64 (dal60);
457 ip6h0->dst_address.as_u64[1] = clib_host_to_net_u64 (dar60);
460 * Determine next node. Can be one of:
461 * ip6-lookup, ip6-rewrite, ip4-fragment, ip4-virtreass, error-drop
463 if (PREDICT_TRUE (error0 == MAP_ERROR_NONE))
467 && (clib_net_to_host_u16 (ip6h0->payload_length) +
468 sizeof (*ip6h0) > d0->mtu)))
470 next0 = ip4_map_fragment (p0, d0->mtu, df0, &error0);
475 ip4_map_ip6_lookup_bypass (p0,
477 IP4_MAP_NEXT_IP6_REWRITE : next0;
478 vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX,
480 map_domain_index0, 1,
482 (ip6h0->payload_length) +
488 next0 = IP4_MAP_NEXT_DROP;
491 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
493 map_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof (*tr));
494 tr->map_domain_index = map_domain_index0;
498 p0->error = error_node->errors[error0];
499 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
500 n_left_to_next, pi0, next0);
502 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
505 return frame->n_vectors;
512 ip4_map_reass (vlib_main_t * vm,
513 vlib_node_runtime_t * node, vlib_frame_t * frame)
515 u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
516 vlib_node_runtime_t *error_node =
517 vlib_node_get_runtime (vm, ip4_map_reass_node.index);
518 from = vlib_frame_vector_args (frame);
519 n_left_from = frame->n_vectors;
520 next_index = node->cached_next_index;
521 map_main_t *mm = &map_main;
522 vlib_combined_counter_main_t *cm = mm->domain_counters;
523 u32 thread_index = vm->thread_index;
524 u32 *fragments_to_drop = NULL;
525 u32 *fragments_to_loopback = NULL;
527 while (n_left_from > 0)
529 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
531 while (n_left_from > 0 && n_left_to_next > 0)
536 u8 error0 = MAP_ERROR_NONE;
540 u32 next0 = IP4_MAP_REASS_NEXT_IP6_LOOKUP;
541 u32 map_domain_index0;
544 pi0 = to_next[0] = from[0];
550 p0 = vlib_get_buffer (vm, pi0);
551 ip60 = vlib_buffer_get_current (p0);
552 ip40 = (ip4_header_t *) (ip60 + 1);
553 map_domain_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
554 d0 = ip4_map_get_domain (map_domain_index0);
556 map_ip4_reass_lock ();
557 map_ip4_reass_t *r = map_ip4_reass_get (ip40->src_address.as_u32,
558 ip40->dst_address.as_u32,
562 if (PREDICT_FALSE (!r))
564 // Could not create a caching entry
565 error0 = MAP_ERROR_FRAGMENT_MEMORY;
567 else if (PREDICT_TRUE (ip4_get_fragment_offset (ip40)))
571 // We know the port already
574 else if (map_ip4_reass_add_fragment (r, pi0))
576 // Not enough space for caching
577 error0 = MAP_ERROR_FRAGMENT_MEMORY;
578 map_ip4_reass_free (r, &fragments_to_drop);
585 else if ((port0 = ip4_get_port (ip40, 0)) == 0)
587 // Could not find port. We'll free the reassembly.
588 error0 = MAP_ERROR_BAD_PROTOCOL;
590 map_ip4_reass_free (r, &fragments_to_drop);
595 map_ip4_reass_get_fragments (r, &fragments_to_loopback);
598 #ifdef MAP_IP4_REASS_COUNT_BYTES
601 r->forwarded += clib_host_to_net_u16 (ip40->length) - 20;
602 if (!ip4_get_fragment_more (ip40))
604 ip4_get_fragment_offset (ip40) * 8 +
605 clib_host_to_net_u16 (ip40->length) - 20;
606 if (r->forwarded >= r->expected_total)
607 map_ip4_reass_free (r, &fragments_to_drop);
611 map_ip4_reass_unlock ();
613 // NOTE: Most operations have already been performed by ip4_map
614 // All we need is the right destination address
615 ip60->dst_address.as_u64[0] =
616 map_get_pfx_net (d0, ip40->dst_address.as_u32, port0);
617 ip60->dst_address.as_u64[1] =
618 map_get_sfx_net (d0, ip40->dst_address.as_u32, port0);
622 && (clib_net_to_host_u16 (ip60->payload_length) +
623 sizeof (*ip60) > d0->mtu)))
625 // TODO: vnet_buffer (p0)->ip_frag.header_offset = sizeof (*ip60);
626 vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP6_LOOKUP;
627 vnet_buffer (p0)->ip_frag.mtu = d0->mtu;
628 vnet_buffer (p0)->ip_frag.flags = IP_FRAG_FLAG_IP6_HEADER;
629 next0 = IP4_MAP_REASS_NEXT_IP4_FRAGMENT;
632 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
634 map_ip4_map_reass_trace_t *tr =
635 vlib_add_trace (vm, node, p0, sizeof (*tr));
636 tr->map_domain_index = map_domain_index0;
649 if (error0 == MAP_ERROR_NONE)
650 vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX,
652 map_domain_index0, 1,
654 (ip60->payload_length) + 40);
656 (error0 == MAP_ERROR_NONE) ? next0 : IP4_MAP_REASS_NEXT_DROP;
657 p0->error = error_node->errors[error0];
658 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
659 n_left_to_next, pi0, next0);
662 //Loopback when we reach the end of the inpu vector
663 if (n_left_from == 0 && vec_len (fragments_to_loopback))
665 from = vlib_frame_vector_args (frame);
666 u32 len = vec_len (fragments_to_loopback);
667 if (len <= VLIB_FRAME_SIZE)
669 clib_memcpy (from, fragments_to_loopback,
672 vec_reset_length (fragments_to_loopback);
677 fragments_to_loopback + (len -
679 sizeof (u32) * VLIB_FRAME_SIZE);
680 n_left_from = VLIB_FRAME_SIZE;
681 _vec_len (fragments_to_loopback) = len - VLIB_FRAME_SIZE;
685 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
688 map_send_all_to_node (vm, fragments_to_drop, node,
689 &error_node->errors[MAP_ERROR_FRAGMENT_DROPPED],
690 IP4_MAP_REASS_NEXT_DROP);
692 vec_free (fragments_to_drop);
693 vec_free (fragments_to_loopback);
694 return frame->n_vectors;
697 static char *map_error_strings[] = {
698 #define _(sym,string) string,
704 VLIB_REGISTER_NODE(ip4_map_node) = {
707 .vector_size = sizeof(u32),
708 .format_trace = format_map_trace,
709 .type = VLIB_NODE_TYPE_INTERNAL,
711 .n_errors = MAP_N_ERROR,
712 .error_strings = map_error_strings,
714 .n_next_nodes = IP4_MAP_N_NEXT,
716 [IP4_MAP_NEXT_IP6_LOOKUP] = "ip6-lookup",
717 #ifdef MAP_SKIP_IP6_LOOKUP
718 [IP4_MAP_NEXT_IP6_REWRITE] = "ip6-load-balance",
720 [IP4_MAP_NEXT_IP4_FRAGMENT] = "ip4-frag",
721 [IP4_MAP_NEXT_IP6_FRAGMENT] = "ip6-frag",
722 [IP4_MAP_NEXT_REASS] = "ip4-map-reass",
723 [IP4_MAP_NEXT_ICMP_ERROR] = "ip4-icmp-error",
724 [IP4_MAP_NEXT_DROP] = "error-drop",
730 VLIB_REGISTER_NODE(ip4_map_reass_node) = {
731 .function = ip4_map_reass,
732 .name = "ip4-map-reass",
733 .vector_size = sizeof(u32),
734 .format_trace = format_ip4_map_reass_trace,
735 .type = VLIB_NODE_TYPE_INTERNAL,
737 .n_errors = MAP_N_ERROR,
738 .error_strings = map_error_strings,
740 .n_next_nodes = IP4_MAP_REASS_N_NEXT,
742 [IP4_MAP_REASS_NEXT_IP6_LOOKUP] = "ip6-lookup",
743 [IP4_MAP_REASS_NEXT_IP4_FRAGMENT] = "ip4-frag",
744 [IP4_MAP_REASS_NEXT_DROP] = "error-drop",
750 * fd.io coding-style-patch-verification: ON
753 * eval: (c-set-style "gnu")