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 * ip/ip6_forward.c: IP v6 forwarding
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #include <vnet/vnet.h>
41 #include <vnet/ip/ip.h>
42 #include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */
43 #include <vnet/srp/srp.h> /* for srp_hw_interface_class */
44 #include <vppinfra/cache.h>
46 #include <vppinfra/bihash_template.c>
48 static void compute_prefix_lengths_in_search_order (ip6_main_t * im)
51 vec_reset_length (im->prefix_lengths_in_search_order);
52 /* Note: bitmap reversed so this is in fact a longest prefix match */
53 clib_bitmap_foreach (i, im->non_empty_dst_address_length_bitmap,
55 int dst_address_length = 128 - i;
56 vec_add1 (im->prefix_lengths_in_search_order, dst_address_length);
61 ip6_fib_lookup_with_table (ip6_main_t * im, u32 fib_index, ip6_address_t * dst)
63 ip_lookup_main_t * lm = &im->lookup_main;
66 BVT(clib_bihash_kv) kv, value;
69 len = vec_len (im->prefix_lengths_in_search_order);
71 kv.key[0] = dst->as_u64[0];
72 kv.key[1] = dst->as_u64[1];
73 fib = ((u64)((fib_index))<<32);
75 for (i = 0; i < len; i++)
77 int dst_address_length = im->prefix_lengths_in_search_order[i];
78 ip6_address_t * mask = &im->fib_masks[dst_address_length];
80 ASSERT(dst_address_length >= 0 && dst_address_length <= 128);
81 //As lengths are decreasing, masks are increasingly specific.
82 kv.key[0] &= mask->as_u64[0];
83 kv.key[1] &= mask->as_u64[1];
84 kv.key[2] = fib | dst_address_length;
86 rv = BV(clib_bihash_search_inline_2)(&im->ip6_lookup_table, &kv, &value);
91 return lm->miss_adj_index;
94 u32 ip6_fib_lookup (ip6_main_t * im, u32 sw_if_index, ip6_address_t * dst)
96 u32 fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
97 return ip6_fib_lookup_with_table (im, fib_index, dst);
101 vnet_ip6_fib_init (ip6_main_t * im, u32 fib_index)
103 ip_lookup_main_t * lm = &im->lookup_main;
104 ip6_add_del_route_args_t a;
105 ip_adjacency_t * adj;
107 memset(&a, 0x0, sizeof(ip6_add_del_route_args_t));
109 a.table_index_or_table_id = fib_index;
110 a.flags = (IP6_ROUTE_FLAG_ADD
111 | IP6_ROUTE_FLAG_FIB_INDEX
112 | IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY
113 | IP6_ROUTE_FLAG_NO_REDISTRIBUTE);
115 /* Add ff02::1:ff00:0/104 via local route for all tables.
116 This is required for neighbor discovery to work. */
117 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
119 adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
120 adj->if_address_index = ~0;
121 adj->rewrite_header.data_bytes = 0;
123 ip6_set_solicited_node_multicast_address (&a.dst_address, 0);
125 a.dst_address_length = 104;
126 ip6_add_del_route (im, &a);
128 /* Add all-routers multicast address via local route for all tables */
129 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
131 adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
132 adj->if_address_index = ~0;
133 adj->rewrite_header.data_bytes = 0;
135 ip6_set_reserved_multicast_address (&a.dst_address,
136 IP6_MULTICAST_SCOPE_link_local,
137 IP6_MULTICAST_GROUP_ID_all_routers);
139 a.dst_address_length = 128;
140 ip6_add_del_route (im, &a);
142 /* Add all-nodes multicast address via local route for all tables */
143 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
145 adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
146 adj->if_address_index = ~0;
147 adj->rewrite_header.data_bytes = 0;
149 ip6_set_reserved_multicast_address (&a.dst_address,
150 IP6_MULTICAST_SCOPE_link_local,
151 IP6_MULTICAST_GROUP_ID_all_hosts);
153 a.dst_address_length = 128;
154 ip6_add_del_route (im, &a);
156 /* Add all-mldv2 multicast address via local route for all tables */
157 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
159 adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
160 adj->if_address_index = ~0;
161 adj->rewrite_header.data_bytes = 0;
163 ip6_set_reserved_multicast_address (&a.dst_address,
164 IP6_MULTICAST_SCOPE_link_local,
165 IP6_MULTICAST_GROUP_ID_mldv2_routers);
167 a.dst_address_length = 128;
168 ip6_add_del_route (im, &a);
172 create_fib_with_table_id (ip6_main_t * im, u32 table_id)
175 hash_set (im->fib_index_by_table_id, table_id, vec_len (im->fibs));
176 vec_add2 (im->fibs, fib, 1);
177 fib->table_id = table_id;
178 fib->index = fib - im->fibs;
179 fib->flow_hash_config = IP_FLOW_HASH_DEFAULT;
180 vnet_ip6_fib_init (im, fib->index);
185 find_ip6_fib_by_table_index_or_id (ip6_main_t * im, u32 table_index_or_id, u32 flags)
187 uword * p, fib_index;
189 fib_index = table_index_or_id;
190 if (! (flags & IP6_ROUTE_FLAG_FIB_INDEX))
192 if (table_index_or_id == ~0) {
193 table_index_or_id = 0;
194 while (hash_get (im->fib_index_by_table_id, table_index_or_id)) {
197 return create_fib_with_table_id (im, table_index_or_id);
200 p = hash_get (im->fib_index_by_table_id, table_index_or_id);
202 return create_fib_with_table_id (im, table_index_or_id);
205 return vec_elt_at_index (im->fibs, fib_index);
208 void ip6_add_del_route (ip6_main_t * im, ip6_add_del_route_args_t * a)
210 ip_lookup_main_t * lm = &im->lookup_main;
212 ip6_address_t dst_address;
213 u32 dst_address_length, adj_index;
215 u32 old_adj_index = ~0;
216 BVT(clib_bihash_kv) kv, value;
218 vlib_smp_unsafe_warning();
220 is_del = (a->flags & IP6_ROUTE_FLAG_DEL) != 0;
222 /* Either create new adjacency or use given one depending on arguments. */
223 if (a->n_add_adj > 0)
225 ip_add_adjacency (lm, a->add_adj, a->n_add_adj, &adj_index);
226 ip_call_add_del_adjacency_callbacks (lm, adj_index, /* is_del */ 0);
229 adj_index = a->adj_index;
231 dst_address = a->dst_address;
232 dst_address_length = a->dst_address_length;
233 fib = find_ip6_fib_by_table_index_or_id (im, a->table_index_or_table_id,
236 ASSERT (dst_address_length < ARRAY_LEN (im->fib_masks));
237 ip6_address_mask (&dst_address, &im->fib_masks[dst_address_length]);
239 /* refcount accounting */
242 ASSERT (im->dst_address_length_refcounts[dst_address_length] > 0);
243 if (--im->dst_address_length_refcounts[dst_address_length] == 0)
245 im->non_empty_dst_address_length_bitmap =
246 clib_bitmap_set (im->non_empty_dst_address_length_bitmap,
247 128 - dst_address_length, 0);
248 compute_prefix_lengths_in_search_order (im);
253 im->dst_address_length_refcounts[dst_address_length]++;
255 im->non_empty_dst_address_length_bitmap =
256 clib_bitmap_set (im->non_empty_dst_address_length_bitmap,
257 128 - dst_address_length, 1);
258 compute_prefix_lengths_in_search_order (im);
261 kv.key[0] = dst_address.as_u64[0];
262 kv.key[1] = dst_address.as_u64[1];
263 kv.key[2] = ((u64)((fib - im->fibs))<<32) | dst_address_length;
265 if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) == 0)
266 old_adj_index = value.value;
269 BV(clib_bihash_add_del) (&im->ip6_lookup_table, &kv, 0 /* is_add */);
272 /* Make sure adj index is valid. */
274 (void) ip_get_adjacency (lm, adj_index);
276 kv.value = adj_index;
278 BV(clib_bihash_add_del) (&im->ip6_lookup_table, &kv, 1 /* is_add */);
281 /* Avoid spurious reference count increments */
282 if (old_adj_index == adj_index
284 && !(a->flags & IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY))
286 ip_adjacency_t * adj = ip_get_adjacency (lm, adj_index);
287 if (adj->share_count > 0)
291 /* Delete old adjacency index if present and changed. */
293 if (! (a->flags & IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY)
294 && old_adj_index != ~0
295 && old_adj_index != adj_index)
296 ip_del_adjacency (lm, old_adj_index);
301 ip6_route_get_next_hop_adj (ip6_main_t * im,
303 ip6_address_t *next_hop,
304 u32 next_hop_sw_if_index,
305 u32 explicit_fib_index)
307 ip_lookup_main_t * lm = &im->lookup_main;
308 vnet_main_t * vnm = vnet_get_main();
309 int is_interface_next_hop;
314 fib = vec_elt_at_index (im->fibs, fib_index);
316 is_interface_next_hop = ip6_address_is_zero (next_hop);
318 if (is_interface_next_hop)
320 nh_result = hash_get (im->interface_route_adj_index_by_sw_if_index,
321 next_hop_sw_if_index);
323 nh_adj_index = *nh_result;
326 ip_adjacency_t * adj;
327 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
329 ip6_adjacency_set_interface_route (vnm, adj,
330 next_hop_sw_if_index, ~0);
331 ip_call_add_del_adjacency_callbacks
332 (lm, next_hop_sw_if_index, /* is_del */ 0);
333 hash_set (im->interface_route_adj_index_by_sw_if_index,
334 next_hop_sw_if_index, nh_adj_index);
337 else if (next_hop_sw_if_index == ~0)
339 /* next-hop is recursive. we always need a indirect adj
340 * for recursive paths. Any LPM we perform now will give
341 * us a valid adj, but without tracking the next-hop we
342 * have no way to keep it valid.
344 ip_adjacency_t add_adj;
345 memset (&add_adj, 0, sizeof(add_adj));
347 add_adj.lookup_next_index = IP_LOOKUP_NEXT_INDIRECT;
348 add_adj.indirect.next_hop.ip6.as_u64[0] = next_hop->as_u64[0];
349 add_adj.indirect.next_hop.ip6.as_u64[1] = next_hop->as_u64[1];
350 add_adj.explicit_fib_index = explicit_fib_index;
351 ip_add_adjacency (lm, &add_adj, 1, &nh_adj_index);
355 BVT(clib_bihash_kv) kv, value;
357 /* Look for the interface /128 route */
358 kv.key[0] = next_hop->as_u64[0];
359 kv.key[1] = next_hop->as_u64[1];
360 kv.key[2] = ((u64)((fib - im->fibs))<<32) | 128;
362 if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) < 0)
364 ip_adjacency_t * adj;
365 nh_adj_index = ip6_fib_lookup_with_table (im, fib_index, next_hop);
366 adj = ip_get_adjacency (lm, nh_adj_index);
367 /* if ND interface adjacencty is present, we need to
368 install ND adjaceny for specific next hop */
369 if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP &&
370 adj->arp.next_hop.ip6.as_u64[0] == 0 &&
371 adj->arp.next_hop.ip6.as_u64[1] == 0)
373 nh_adj_index = vnet_ip6_neighbor_glean_add(fib_index, next_hop);
375 else if (next_hop->as_u8[0] == 0xfe)
377 //Next hop is link-local. No indirect in this case.
378 //Let's add it as a possible neighbor on this interface
379 ip6_address_t null_addr= {};
380 ip6_add_del_route_next_hop (im, IP6_ROUTE_FLAG_ADD,
382 &null_addr, next_hop_sw_if_index,
389 nh_adj_index = value.value;
393 return (nh_adj_index);
397 ip6_add_del_route_next_hop (ip6_main_t * im,
399 ip6_address_t * dst_address,
400 u32 dst_address_length,
401 ip6_address_t * next_hop,
402 u32 next_hop_sw_if_index,
403 u32 next_hop_weight, u32 adj_index,
404 u32 explicit_fib_index)
406 vnet_main_t * vnm = vnet_get_main();
407 ip_lookup_main_t * lm = &im->lookup_main;
410 ip6_address_t masked_dst_address;
411 u32 old_mp_adj_index, new_mp_adj_index;
412 u32 dst_adj_index, nh_adj_index;
414 ip_adjacency_t * dst_adj;
415 ip_multipath_adjacency_t * old_mp, * new_mp;
416 int is_del = (flags & IP6_ROUTE_FLAG_DEL) != 0;
417 clib_error_t * error = 0;
418 BVT(clib_bihash_kv) kv, value;
420 vlib_smp_unsafe_warning();
422 if (explicit_fib_index == (u32)~0)
423 fib_index = vec_elt (im->fib_index_by_sw_if_index, next_hop_sw_if_index);
425 fib_index = explicit_fib_index;
427 fib = vec_elt_at_index (im->fibs, fib_index);
429 /* Lookup next hop to be added or deleted. */
430 if (adj_index == (u32)~0)
432 nh_adj_index = ip6_route_get_next_hop_adj(im, fib_index,
434 next_hop_sw_if_index,
439 /* Look for the interface /128 route */
440 kv.key[0] = next_hop->as_u64[0];
441 kv.key[1] = next_hop->as_u64[1];
442 kv.key[2] = ((u64)((fib - im->fibs))<<32) | 128;
444 if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) < 0)
446 vnm->api_errno = VNET_API_ERROR_UNKNOWN_DESTINATION;
447 error = clib_error_return (0, "next-hop %U/128 not in FIB",
448 format_ip6_address, next_hop);
452 nh_adj_index = value.value;
455 ASSERT (dst_address_length < ARRAY_LEN (im->fib_masks));
456 masked_dst_address = dst_address[0];
457 ip6_address_mask (&masked_dst_address, &im->fib_masks[dst_address_length]);
459 kv.key[0] = masked_dst_address.as_u64[0];
460 kv.key[1] = masked_dst_address.as_u64[1];
461 kv.key[2] = ((u64)((fib - im->fibs))<<32) | dst_address_length;
463 rv = BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value);
467 dst_adj_index = value.value;
468 dst_adj = ip_get_adjacency (lm, dst_adj_index);
472 /* For deletes destination must be known. */
475 vnm->api_errno = VNET_API_ERROR_UNKNOWN_DESTINATION;
476 error = clib_error_return (0, "unknown destination %U/%d",
477 format_ip6_address, dst_address,
486 /* Ignore adds of X/128 with next hop of X. */
488 && dst_address_length == 128
489 && ip6_address_is_equal (dst_address, next_hop))
491 vnm->api_errno = VNET_API_ERROR_PREFIX_MATCHES_NEXT_HOP;
492 error = clib_error_return (0, "prefix matches next hop %U/%d",
493 format_ip6_address, dst_address,
498 /* Destination is not known and default weight is set so add route
499 to existing non-multipath adjacency */
500 if (dst_adj_index == ~0 && next_hop_weight == 1 && next_hop_sw_if_index == ~0)
502 /* create / delete additional mapping of existing adjacency */
503 ip6_add_del_route_args_t a;
505 a.table_index_or_table_id = fib_index;
506 a.flags = ((is_del ? IP6_ROUTE_FLAG_DEL : IP6_ROUTE_FLAG_ADD)
507 | IP6_ROUTE_FLAG_FIB_INDEX
508 | IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY
509 | (flags & (IP6_ROUTE_FLAG_NO_REDISTRIBUTE
510 | IP6_ROUTE_FLAG_NOT_LAST_IN_GROUP)));
511 a.dst_address = dst_address[0];
512 a.dst_address_length = dst_address_length;
513 a.adj_index = nh_adj_index;
517 ip6_add_del_route (im, &a);
521 old_mp_adj_index = dst_adj ? dst_adj->heap_handle : ~0;
523 if (! ip_multipath_adjacency_add_del_next_hop
525 dst_adj ? dst_adj->heap_handle : ~0,
530 vnm->api_errno = VNET_API_ERROR_NEXT_HOP_NOT_FOUND_MP;
531 error = clib_error_return
532 (0, "requested deleting next-hop %U not found in multi-path",
533 format_ip6_address, next_hop);
538 if (old_mp_adj_index != ~0)
539 old_mp = vec_elt_at_index (lm->multipath_adjacencies, old_mp_adj_index);
540 if (new_mp_adj_index != ~0)
541 new_mp = vec_elt_at_index (lm->multipath_adjacencies, new_mp_adj_index);
543 if (old_mp != new_mp)
545 ip6_add_del_route_args_t a;
546 ip_adjacency_t * adj;
548 a.table_index_or_table_id = fib_index;
549 a.flags = ((is_del ? IP6_ROUTE_FLAG_DEL : IP6_ROUTE_FLAG_ADD)
550 | IP6_ROUTE_FLAG_FIB_INDEX
551 | IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY
552 | (flags & IP6_ROUTE_FLAG_NO_REDISTRIBUTE));
553 a.dst_address = dst_address[0];
554 a.dst_address_length = dst_address_length;
555 a.adj_index = new_mp ? new_mp->adj_index : dst_adj_index;
559 ip6_add_del_route (im, &a);
561 adj = ip_get_adjacency (lm, new_mp ? new_mp->adj_index : dst_adj_index);
563 adj->share_count += is_del ? -1 : 1;
568 clib_error_report (error);
572 ip6_get_route (ip6_main_t * im,
573 u32 table_index_or_table_id,
575 ip6_address_t * address,
578 ip6_fib_t * fib = find_ip6_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
579 ip6_address_t masked_address;
580 BVT(clib_bihash_kv) kv, value;
582 ASSERT (address_length < ARRAY_LEN (im->fib_masks));
583 clib_memcpy (&masked_address, address, sizeof (masked_address));
584 ip6_address_mask (&masked_address, &im->fib_masks[address_length]);
586 kv.key[0] = masked_address.as_u64[0];
587 kv.key[1] = masked_address.as_u64[1];
588 kv.key[2] = ((u64)((fib - im->fibs))<<32) | address_length;
590 if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) == 0)
591 return (value.value);
596 ip6_foreach_matching_route (ip6_main_t * im,
597 u32 table_index_or_table_id,
599 ip6_address_t * dst_address,
601 ip6_address_t ** results,
602 u8 ** result_lengths)
605 find_ip6_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
606 BVT(clib_bihash) * h = &im->ip6_lookup_table;
607 BVT(clib_bihash_value) * v;
608 clib_bihash_bucket_t * b;
612 _vec_len (*results) = 0;
614 _vec_len (*result_lengths) = 0;
616 /* Walk the table looking for routes which match the supplied address */
617 for (i = 0; i < h->nbuckets; i++)
623 v = BV(clib_bihash_get_value) (h, b->offset);
624 for (j = 0; j < (1<<b->log2_pages); j++)
626 for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
628 if (BV(clib_bihash_is_free)(&v->kvp[k]))
631 if ((v->kvp[k].key[2]
632 == (((u64)((fib - im->fibs))<<32) | address_length))
633 && ip6_destination_matches_route
634 (im, dst_address, (ip6_address_t *) &v->kvp[k],
639 a = (ip6_address_t *)(&v->kvp[k]);
641 vec_add1 (*results, a[0]);
642 vec_add1 (*result_lengths, address_length);
650 void ip6_maybe_remap_adjacencies (ip6_main_t * im,
651 u32 table_index_or_table_id,
656 = find_ip6_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
658 ip_lookup_main_t * lm = &im->lookup_main;
660 if (lm->n_adjacency_remaps == 0)
663 clib_warning ("unimplemented, please report to vpp-dev@cisco.com");
665 /* All remaps have been performed. */
666 lm->n_adjacency_remaps = 0;
669 void ip6_delete_matching_routes (ip6_main_t * im,
670 u32 table_index_or_table_id,
672 ip6_address_t * address,
675 /* $$$$ static may be OK - this should happen only on thread 0 */
676 static ip6_address_t * matching_addresses;
677 static u8 * matching_address_lengths;
679 ip6_add_del_route_args_t a;
681 vlib_smp_unsafe_warning();
683 a.flags = IP6_ROUTE_FLAG_DEL | IP6_ROUTE_FLAG_NO_REDISTRIBUTE | flags;
684 a.table_index_or_table_id = table_index_or_table_id;
689 for (l = address_length + 1; l <= 128; l++)
691 ip6_foreach_matching_route (im, table_index_or_table_id, flags,
695 &matching_address_lengths);
696 for (i = 0; i < vec_len (matching_addresses); i++)
698 a.dst_address = matching_addresses[i];
699 a.dst_address_length = matching_address_lengths[i];
700 ip6_add_del_route (im, &a);
704 ip6_maybe_remap_adjacencies (im, table_index_or_table_id, flags);
708 ip6_forward_next_trace (vlib_main_t * vm,
709 vlib_node_runtime_t * node,
710 vlib_frame_t * frame,
711 vlib_rx_or_tx_t which_adj_index);
714 ip6_lookup_inline (vlib_main_t * vm,
715 vlib_node_runtime_t * node,
716 vlib_frame_t * frame,
719 ip6_main_t * im = &ip6_main;
720 ip_lookup_main_t * lm = &im->lookup_main;
721 vlib_combined_counter_main_t * cm = &im->lookup_main.adjacency_counters;
722 u32 n_left_from, n_left_to_next, * from, * to_next;
723 ip_lookup_next_t next;
724 u32 cpu_index = os_get_cpu_number();
726 from = vlib_frame_vector_args (frame);
727 n_left_from = frame->n_vectors;
728 next = node->cached_next_index;
730 while (n_left_from > 0)
732 vlib_get_next_frame (vm, node, next,
733 to_next, n_left_to_next);
735 while (n_left_from >= 4 && n_left_to_next >= 2)
737 vlib_buffer_t * p0, * p1;
738 u32 pi0, pi1, adj_index0, adj_index1, wrong_next;
739 ip_lookup_next_t next0, next1;
740 ip6_header_t * ip0, * ip1;
741 ip_adjacency_t * adj0, * adj1;
742 ip6_address_t * dst_addr0, * dst_addr1;
743 u32 fib_index0, fib_index1;
744 u32 flow_hash_config0, flow_hash_config1;
746 /* Prefetch next iteration. */
748 vlib_buffer_t * p2, * p3;
750 p2 = vlib_get_buffer (vm, from[2]);
751 p3 = vlib_get_buffer (vm, from[3]);
753 vlib_prefetch_buffer_header (p2, LOAD);
754 vlib_prefetch_buffer_header (p3, LOAD);
755 CLIB_PREFETCH (p2->data, sizeof (ip0[0]), LOAD);
756 CLIB_PREFETCH (p3->data, sizeof (ip0[0]), LOAD);
759 pi0 = to_next[0] = from[0];
760 pi1 = to_next[1] = from[1];
762 p0 = vlib_get_buffer (vm, pi0);
763 p1 = vlib_get_buffer (vm, pi1);
765 ip0 = vlib_buffer_get_current (p0);
766 ip1 = vlib_buffer_get_current (p1);
768 if (PREDICT_FALSE(is_indirect))
770 ip_adjacency_t * iadj0, * iadj1;
771 iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
772 iadj1 = ip_get_adjacency (lm, vnet_buffer(p1)->ip.adj_index[VLIB_TX]);
773 dst_addr0 = &iadj0->indirect.next_hop.ip6;
774 dst_addr1 = &iadj1->indirect.next_hop.ip6;
778 dst_addr0 = &ip0->dst_address;
779 dst_addr1 = &ip1->dst_address;
782 fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
783 fib_index1 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p1)->sw_if_index[VLIB_RX]);
785 fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
786 fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
787 fib_index1 = (vnet_buffer(p1)->sw_if_index[VLIB_TX] == (u32)~0) ?
788 fib_index1 : vnet_buffer(p1)->sw_if_index[VLIB_TX];
790 adj_index0 = ip6_fib_lookup_with_table (im, fib_index0, dst_addr0);
791 adj_index1 = ip6_fib_lookup_with_table (im, fib_index1, dst_addr1);
793 adj0 = ip_get_adjacency (lm, adj_index0);
794 adj1 = ip_get_adjacency (lm, adj_index1);
796 if (PREDICT_FALSE (adj0->explicit_fib_index != ~0))
798 adj_index0 = ip6_fib_lookup_with_table
799 (im, adj0->explicit_fib_index, dst_addr0);
800 adj0 = ip_get_adjacency (lm, adj_index0);
802 if (PREDICT_FALSE (adj1->explicit_fib_index != ~0))
804 adj_index1 = ip6_fib_lookup_with_table
805 (im, adj1->explicit_fib_index, dst_addr1);
806 adj1 = ip_get_adjacency (lm, adj_index1);
809 next0 = adj0->lookup_next_index;
810 next1 = adj1->lookup_next_index;
812 /* Only process the HBH Option Header if explicitly configured to do so */
813 next0 = (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) && im->hbh_enabled &&
814 adj_index0 ? (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : adj0->lookup_next_index;
815 next1 = (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) && im->hbh_enabled &&
816 adj_index1 ? (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : adj1->lookup_next_index;
818 vnet_buffer (p0)->ip.flow_hash =
819 vnet_buffer(p1)->ip.flow_hash = 0;
821 if (PREDICT_FALSE(adj0->n_adj > 1))
824 vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
825 vnet_buffer (p0)->ip.flow_hash =
826 ip6_compute_flow_hash (ip0, flow_hash_config0);
829 if (PREDICT_FALSE(adj1->n_adj > 1))
832 vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
834 vnet_buffer (p1)->ip.flow_hash =
835 ip6_compute_flow_hash (ip1, flow_hash_config1);
838 ASSERT (adj0->n_adj > 0);
839 ASSERT (adj1->n_adj > 0);
840 ASSERT (is_pow2 (adj0->n_adj));
841 ASSERT (is_pow2 (adj1->n_adj));
842 adj_index0 += (vnet_buffer (p0)->ip.flow_hash & (adj0->n_adj - 1));
843 adj_index1 += (vnet_buffer (p1)->ip.flow_hash & (adj1->n_adj - 1));
845 vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
846 vnet_buffer (p1)->ip.adj_index[VLIB_TX] = adj_index1;
848 vlib_increment_combined_counter
849 (cm, cpu_index, adj_index0, 1,
850 vlib_buffer_length_in_chain (vm, p0));
851 vlib_increment_combined_counter
852 (cm, cpu_index, adj_index1, 1,
853 vlib_buffer_length_in_chain (vm, p1));
860 wrong_next = (next0 != next) + 2*(next1 != next);
861 if (PREDICT_FALSE (wrong_next != 0))
870 vlib_set_next_frame_buffer (vm, node, next0, pi0);
877 vlib_set_next_frame_buffer (vm, node, next1, pi1);
884 vlib_set_next_frame_buffer (vm, node, next0, pi0);
885 vlib_set_next_frame_buffer (vm, node, next1, pi1);
889 vlib_put_next_frame (vm, node, next, n_left_to_next);
891 vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
897 while (n_left_from > 0 && n_left_to_next > 0)
902 ip_lookup_next_t next0;
903 ip_adjacency_t * adj0;
904 ip6_address_t * dst_addr0;
905 u32 fib_index0, flow_hash_config0;
910 p0 = vlib_get_buffer (vm, pi0);
912 ip0 = vlib_buffer_get_current (p0);
914 if (PREDICT_FALSE(is_indirect))
916 ip_adjacency_t * iadj0;
917 iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
918 dst_addr0 = &iadj0->indirect.next_hop.ip6;
922 dst_addr0 = &ip0->dst_address;
925 fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
926 fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
927 fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
930 vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
932 adj_index0 = ip6_fib_lookup_with_table (im, fib_index0, dst_addr0);
934 adj0 = ip_get_adjacency (lm, adj_index0);
936 if (PREDICT_FALSE (adj0->explicit_fib_index != ~0))
938 adj_index0 = ip6_fib_lookup_with_table
939 (im, adj0->explicit_fib_index, dst_addr0);
940 adj0 = ip_get_adjacency (lm, adj_index0);
943 /* Only process the HBH Option Header if explicitly configured to do so */
944 next0 = (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) && im->hbh_enabled &&
945 adj_index0 ? (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : adj0->lookup_next_index;
947 vnet_buffer (p0)->ip.flow_hash = 0;
949 if (PREDICT_FALSE(adj0->n_adj > 1))
952 vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
953 vnet_buffer (p0)->ip.flow_hash =
954 ip6_compute_flow_hash (ip0, flow_hash_config0);
957 ASSERT (adj0->n_adj > 0);
958 ASSERT (is_pow2 (adj0->n_adj));
959 adj_index0 += (vnet_buffer (p0)->ip.flow_hash & (adj0->n_adj - 1));
961 vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
963 vlib_increment_combined_counter
964 (cm, cpu_index, adj_index0, 1,
965 vlib_buffer_length_in_chain (vm, p0));
972 if (PREDICT_FALSE (next0 != next))
975 vlib_put_next_frame (vm, node, next, n_left_to_next);
977 vlib_get_next_frame (vm, node, next,
978 to_next, n_left_to_next);
985 vlib_put_next_frame (vm, node, next, n_left_to_next);
988 if (node->flags & VLIB_NODE_FLAG_TRACE)
989 ip6_forward_next_trace(vm, node, frame, VLIB_TX);
991 return frame->n_vectors;
994 void ip6_adjacency_set_interface_route (vnet_main_t * vnm,
995 ip_adjacency_t * adj,
997 u32 if_address_index)
999 vnet_hw_interface_t * hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1003 if (hw->hw_class_index == ethernet_hw_interface_class.index
1004 || hw->hw_class_index == srp_hw_interface_class.index)
1006 n = IP_LOOKUP_NEXT_ARP;
1007 node_index = ip6_discover_neighbor_node.index;
1008 adj->if_address_index = if_address_index;
1009 adj->arp.next_hop.ip6.as_u64[0] = 0;
1010 adj->arp.next_hop.ip6.as_u64[1] = 0;
1014 n = IP_LOOKUP_NEXT_REWRITE;
1015 node_index = ip6_rewrite_node.index;
1018 adj->lookup_next_index = n;
1019 adj->explicit_fib_index = ~0;
1021 vnet_rewrite_for_sw_interface
1023 VNET_L3_PACKET_TYPE_IP6,
1026 VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST,
1027 &adj->rewrite_header,
1028 sizeof (adj->rewrite_data));
1032 ip6_add_interface_routes (vnet_main_t * vnm, u32 sw_if_index,
1033 ip6_main_t * im, u32 fib_index,
1034 ip_interface_address_t * a)
1036 ip_lookup_main_t * lm = &im->lookup_main;
1037 ip_adjacency_t * adj;
1038 ip6_address_t * address = ip_interface_address_get_address (lm, a);
1039 ip6_add_del_route_args_t x;
1040 vnet_hw_interface_t * hw_if = vnet_get_sup_hw_interface (vnm, sw_if_index);
1041 u32 classify_table_index;
1043 /* Add e.g. 1.0.0.0/8 as interface route (arp for Ethernet). */
1044 x.table_index_or_table_id = fib_index;
1045 x.flags = (IP6_ROUTE_FLAG_ADD
1046 | IP6_ROUTE_FLAG_FIB_INDEX
1047 | IP6_ROUTE_FLAG_NO_REDISTRIBUTE);
1048 x.dst_address = address[0];
1049 x.dst_address_length = a->address_length;
1053 a->neighbor_probe_adj_index = ~0;
1054 if (a->address_length < 128)
1056 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
1058 ip6_adjacency_set_interface_route (vnm, adj, sw_if_index, a - lm->if_address_pool);
1059 ip_call_add_del_adjacency_callbacks (lm, x.adj_index, /* is_del */ 0);
1060 ip6_add_del_route (im, &x);
1061 a->neighbor_probe_adj_index = x.adj_index;
1064 /* Add e.g. ::1/128 as local to this host. */
1065 adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
1068 classify_table_index = ~0;
1069 if (sw_if_index < vec_len (lm->classify_table_index_by_sw_if_index))
1070 classify_table_index = lm->classify_table_index_by_sw_if_index [sw_if_index];
1071 if (classify_table_index != (u32) ~0)
1073 adj->lookup_next_index = IP_LOOKUP_NEXT_CLASSIFY;
1074 adj->classify.table_index = classify_table_index;
1077 adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
1079 adj->if_address_index = a - lm->if_address_pool;
1080 adj->rewrite_header.sw_if_index = sw_if_index;
1081 adj->rewrite_header.max_l3_packet_bytes = hw_if->max_l3_packet_bytes[VLIB_RX];
1082 adj->rewrite_header.data_bytes = 0;
1083 ip_call_add_del_adjacency_callbacks (lm, x.adj_index, /* is_del */ 0);
1084 x.dst_address_length = 128;
1085 ip6_add_del_route (im, &x);
1089 ip6_del_interface_routes (ip6_main_t * im, u32 fib_index,
1090 ip6_address_t * address, u32 address_length)
1092 ip6_add_del_route_args_t x;
1094 /* Add e.g. 1.0.0.0/8 as interface route (arp for Ethernet). */
1095 x.table_index_or_table_id = fib_index;
1096 x.flags = (IP6_ROUTE_FLAG_DEL
1097 | IP6_ROUTE_FLAG_FIB_INDEX
1098 | IP6_ROUTE_FLAG_NO_REDISTRIBUTE);
1099 x.dst_address = address[0];
1100 x.dst_address_length = address_length;
1105 if (address_length < 128)
1107 /* Don't wipe out fe80::0/64 */
1108 if (address_length != 64 ||
1109 address[0].as_u64[0] != clib_net_to_host_u64(0xfe80000000000000ULL))
1110 ip6_add_del_route (im, &x);
1113 x.dst_address_length = 128;
1114 ip6_add_del_route (im, &x);
1116 ip6_delete_matching_routes (im,
1118 IP6_ROUTE_FLAG_FIB_INDEX,
1125 ip6_address_t address;
1127 } ip6_interface_address_t;
1129 static clib_error_t *
1130 ip6_add_del_interface_address_internal (vlib_main_t * vm,
1132 ip6_address_t * new_address,
1138 static clib_error_t *
1139 ip6_add_del_interface_address_internal (vlib_main_t * vm,
1141 ip6_address_t * address,
1147 vnet_main_t * vnm = vnet_get_main();
1148 ip6_main_t * im = &ip6_main;
1149 ip_lookup_main_t * lm = &im->lookup_main;
1150 clib_error_t * error;
1151 u32 if_address_index;
1152 ip6_address_fib_t ip6_af, * addr_fib = 0;
1154 vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
1155 ip6_addr_fib_init (&ip6_af, address,
1156 vec_elt (im->fib_index_by_sw_if_index, sw_if_index));
1157 vec_add1 (addr_fib, ip6_af);
1160 uword elts_before = pool_elts (lm->if_address_pool);
1162 error = ip_interface_address_add_del
1172 /* Pool did not grow: add duplicate address. */
1173 if (elts_before == pool_elts (lm->if_address_pool))
1177 if (vnet_sw_interface_is_admin_up (vnm, sw_if_index) && insert_routes)
1180 ip6_del_interface_routes (im, ip6_af.fib_index, address,
1184 ip6_add_interface_routes (vnm, sw_if_index,
1185 im, ip6_af.fib_index,
1186 pool_elt_at_index (lm->if_address_pool, if_address_index));
1190 ip6_add_del_interface_address_callback_t * cb;
1191 vec_foreach (cb, im->add_del_interface_address_callbacks)
1192 cb->function (im, cb->function_opaque, sw_if_index,
1193 address, address_length,
1199 vec_free (addr_fib);
1204 ip6_add_del_interface_address (vlib_main_t * vm, u32 sw_if_index,
1205 ip6_address_t * address, u32 address_length,
1208 return ip6_add_del_interface_address_internal
1209 (vm, sw_if_index, address, address_length,
1210 /* redistribute */ 1,
1211 /* insert_routes */ 1,
1216 ip6_sw_interface_admin_up_down (vnet_main_t * vnm,
1220 ip6_main_t * im = &ip6_main;
1221 ip_interface_address_t * ia;
1223 u32 is_admin_up, fib_index;
1225 /* Fill in lookup tables with default table (0). */
1226 vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
1228 vec_validate_init_empty (im->lookup_main.if_address_pool_index_by_sw_if_index, sw_if_index, ~0);
1230 is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
1232 fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
1234 foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index,
1235 0 /* honor unnumbered */,
1237 a = ip_interface_address_get_address (&im->lookup_main, ia);
1239 ip6_add_interface_routes (vnm, sw_if_index,
1243 ip6_del_interface_routes (im, fib_index,
1244 a, ia->address_length);
1250 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_sw_interface_admin_up_down);
1252 /* Built-in ip6 unicast rx feature path definition */
1253 VNET_IP6_UNICAST_FEATURE_INIT (ip6_inacl, static) = {
1254 .node_name = "ip6-inacl",
1255 .runs_before = ORDER_CONSTRAINTS {"ip6-policer-classify", 0},
1256 .feature_index = &ip6_main.ip6_unicast_rx_feature_check_access,
1259 VNET_IP6_UNICAST_FEATURE_INIT (ip6_policer_classify, static) = {
1260 .node_name = "ip6-policer-classify",
1261 .runs_before = ORDER_CONSTRAINTS {"ipsec-input-ip6", 0},
1262 .feature_index = &ip6_main.ip6_unicast_rx_feature_policer_classify,
1265 VNET_IP6_UNICAST_FEATURE_INIT (ip6_ipsec, static) = {
1266 .node_name = "ipsec-input-ip6",
1267 .runs_before = ORDER_CONSTRAINTS {"l2tp-decap", 0},
1268 .feature_index = &ip6_main.ip6_unicast_rx_feature_ipsec,
1271 VNET_IP6_UNICAST_FEATURE_INIT (ip6_l2tp, static) = {
1272 .node_name = "l2tp-decap",
1273 .runs_before = ORDER_CONSTRAINTS {"vpath-input-ip6", 0},
1274 .feature_index = &ip6_main.ip6_unicast_rx_feature_l2tp_decap,
1277 VNET_IP6_UNICAST_FEATURE_INIT (ip6_vpath, static) = {
1278 .node_name = "vpath-input-ip6",
1279 .runs_before = ORDER_CONSTRAINTS {"ip6-lookup", 0},
1280 .feature_index = &ip6_main.ip6_unicast_rx_feature_vpath,
1283 VNET_IP6_UNICAST_FEATURE_INIT (ip6_lookup, static) = {
1284 .node_name = "ip6-lookup",
1285 .runs_before = 0, /* not before any other features */
1286 .feature_index = &ip6_main.ip6_unicast_rx_feature_lookup,
1289 /* Built-in ip6 multicast rx feature path definition (none now) */
1290 VNET_IP6_MULTICAST_FEATURE_INIT (ip6_vpath_mc, static) = {
1291 .node_name = "vpath-input-ip6",
1292 .runs_before = ORDER_CONSTRAINTS {"ip6-lookup", 0},
1293 .feature_index = &ip6_main.ip6_multicast_rx_feature_vpath,
1296 VNET_IP6_MULTICAST_FEATURE_INIT (ip6_lookup, static) = {
1297 .node_name = "ip6-lookup",
1298 .runs_before = 0, /* not before any other features */
1299 .feature_index = &ip6_main.ip6_multicast_rx_feature_lookup,
1302 static char * rx_feature_start_nodes[] =
1305 static char * tx_feature_start_nodes[] =
1308 /* Built-in ip4 tx feature path definition */
1309 VNET_IP6_TX_FEATURE_INIT (interface_output, static) = {
1310 .node_name = "interface-output",
1311 .runs_before = 0, /* not before any other features */
1312 .feature_index = &ip6_main.ip6_tx_feature_interface_output,
1315 static clib_error_t *
1316 ip6_feature_init (vlib_main_t * vm, ip6_main_t * im)
1318 ip_lookup_main_t * lm = &im->lookup_main;
1319 clib_error_t * error;
1321 ip_config_main_t * cm;
1322 vnet_config_main_t * vcm;
1323 char **feature_start_nodes;
1324 int feature_start_len;
1326 for (cast = 0; cast < VNET_N_IP_FEAT; cast++)
1328 cm = &lm->feature_config_mains[cast];
1329 vcm = &cm->config_main;
1331 if (cast < VNET_IP_TX_FEAT)
1333 feature_start_nodes = rx_feature_start_nodes;
1334 feature_start_len = ARRAY_LEN(rx_feature_start_nodes);
1338 feature_start_nodes = tx_feature_start_nodes;
1339 feature_start_len = ARRAY_LEN(tx_feature_start_nodes);
1342 if ((error = ip_feature_init_cast (vm, cm, vcm,
1343 feature_start_nodes,
1353 ip6_sw_interface_add_del (vnet_main_t * vnm,
1357 vlib_main_t * vm = vnm->vlib_main;
1358 ip6_main_t * im = &ip6_main;
1359 ip_lookup_main_t * lm = &im->lookup_main;
1363 for (cast = 0; cast < VNET_N_IP_FEAT; cast++)
1365 ip_config_main_t * cm = &lm->feature_config_mains[cast];
1366 vnet_config_main_t * vcm = &cm->config_main;
1368 vec_validate_init_empty (cm->config_index_by_sw_if_index, sw_if_index, ~0);
1369 ci = cm->config_index_by_sw_if_index[sw_if_index];
1371 if (cast == VNET_IP_RX_UNICAST_FEAT)
1372 feature_index = im->ip6_unicast_rx_feature_lookup;
1373 else if (cast == VNET_IP_RX_MULTICAST_FEAT)
1374 feature_index = im->ip6_multicast_rx_feature_lookup;
1376 feature_index = im->ip6_tx_feature_interface_output;
1379 ci = vnet_config_add_feature (vm, vcm,
1382 /* config data */ 0,
1383 /* # bytes of config data */ 0);
1385 ci = vnet_config_del_feature (vm, vcm,
1388 /* config data */ 0,
1389 /* # bytes of config data */ 0);
1391 cm->config_index_by_sw_if_index[sw_if_index] = ci;
1393 * note: do not update the tx feature count here.
1396 return /* no error */ 0;
1399 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip6_sw_interface_add_del);
1402 ip6_lookup (vlib_main_t * vm,
1403 vlib_node_runtime_t * node,
1404 vlib_frame_t * frame)
1406 return ip6_lookup_inline (vm, node, frame, /* is_indirect */ 0);
1409 static u8 * format_ip6_lookup_trace (u8 * s, va_list * args);
1411 VLIB_REGISTER_NODE (ip6_lookup_node) = {
1412 .function = ip6_lookup,
1413 .name = "ip6-lookup",
1414 .vector_size = sizeof (u32),
1416 .format_trace = format_ip6_lookup_trace,
1418 .n_next_nodes = IP6_LOOKUP_N_NEXT,
1419 .next_nodes = IP6_LOOKUP_NEXT_NODES,
1422 VLIB_NODE_FUNCTION_MULTIARCH (ip6_lookup_node, ip6_lookup);
1425 ip6_indirect (vlib_main_t * vm,
1426 vlib_node_runtime_t * node,
1427 vlib_frame_t * frame)
1429 return ip6_lookup_inline (vm, node, frame, /* is_indirect */ 1);
1433 VLIB_REGISTER_NODE (ip6_indirect_node) = {
1434 .function = ip6_indirect,
1435 .name = "ip6-indirect",
1436 .vector_size = sizeof (u32),
1437 .sibling_of = "ip6-lookup",
1438 .format_trace = format_ip6_lookup_trace,
1442 VLIB_NODE_FUNCTION_MULTIARCH (ip6_indirect_node, ip6_indirect);
1445 /* Adjacency taken. */
1450 /* Packet data, possibly *after* rewrite. */
1451 u8 packet_data[128 - 1*sizeof(u32)];
1452 } ip6_forward_next_trace_t;
1454 static u8 * format_ip6_forward_next_trace (u8 * s, va_list * args)
1456 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1457 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1458 ip6_forward_next_trace_t * t = va_arg (*args, ip6_forward_next_trace_t *);
1459 uword indent = format_get_indent (s);
1461 s = format(s, "%U%U",
1462 format_white_space, indent,
1463 format_ip6_header, t->packet_data);
1467 static u8 * format_ip6_lookup_trace (u8 * s, va_list * args)
1469 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1470 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1471 ip6_forward_next_trace_t * t = va_arg (*args, ip6_forward_next_trace_t *);
1472 vnet_main_t * vnm = vnet_get_main();
1473 ip6_main_t * im = &ip6_main;
1474 uword indent = format_get_indent (s);
1476 s = format (s, "fib %d adj-idx %d : %U flow hash: 0x%08x",
1477 t->fib_index, t->adj_index, format_ip_adjacency,
1478 vnm, &im->lookup_main, t->adj_index, t->flow_hash);
1479 s = format(s, "\n%U%U",
1480 format_white_space, indent,
1481 format_ip6_header, t->packet_data);
1486 static u8 * format_ip6_rewrite_trace (u8 * s, va_list * args)
1488 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1489 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1490 ip6_forward_next_trace_t * t = va_arg (*args, ip6_forward_next_trace_t *);
1491 vnet_main_t * vnm = vnet_get_main();
1492 ip6_main_t * im = &ip6_main;
1493 uword indent = format_get_indent (s);
1495 s = format (s, "tx_sw_if_index %d adj-idx %d : %U flow hash: 0x%08x",
1496 t->fib_index, t->adj_index, format_ip_adjacency,
1497 vnm, &im->lookup_main, t->adj_index, t->flow_hash);
1498 s = format (s, "\n%U%U",
1499 format_white_space, indent,
1500 format_ip_adjacency_packet_data,
1501 vnm, &im->lookup_main, t->adj_index,
1502 t->packet_data, sizeof (t->packet_data));
1506 /* Common trace function for all ip6-forward next nodes. */
1508 ip6_forward_next_trace (vlib_main_t * vm,
1509 vlib_node_runtime_t * node,
1510 vlib_frame_t * frame,
1511 vlib_rx_or_tx_t which_adj_index)
1514 ip6_main_t * im = &ip6_main;
1516 n_left = frame->n_vectors;
1517 from = vlib_frame_vector_args (frame);
1522 vlib_buffer_t * b0, * b1;
1523 ip6_forward_next_trace_t * t0, * t1;
1525 /* Prefetch next iteration. */
1526 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
1527 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
1532 b0 = vlib_get_buffer (vm, bi0);
1533 b1 = vlib_get_buffer (vm, bi1);
1535 if (b0->flags & VLIB_BUFFER_IS_TRACED)
1537 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
1538 t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
1539 t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
1540 t0->fib_index = (vnet_buffer(b0)->sw_if_index[VLIB_TX] != (u32)~0) ?
1541 vnet_buffer(b0)->sw_if_index[VLIB_TX] :
1542 vec_elt (im->fib_index_by_sw_if_index,
1543 vnet_buffer(b0)->sw_if_index[VLIB_RX]);
1545 clib_memcpy (t0->packet_data,
1546 vlib_buffer_get_current (b0),
1547 sizeof (t0->packet_data));
1549 if (b1->flags & VLIB_BUFFER_IS_TRACED)
1551 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
1552 t1->adj_index = vnet_buffer (b1)->ip.adj_index[which_adj_index];
1553 t1->flow_hash = vnet_buffer (b1)->ip.flow_hash;
1554 t1->fib_index = (vnet_buffer(b1)->sw_if_index[VLIB_TX] != (u32)~0) ?
1555 vnet_buffer(b1)->sw_if_index[VLIB_TX] :
1556 vec_elt (im->fib_index_by_sw_if_index,
1557 vnet_buffer(b1)->sw_if_index[VLIB_RX]);
1559 clib_memcpy (t1->packet_data,
1560 vlib_buffer_get_current (b1),
1561 sizeof (t1->packet_data));
1571 ip6_forward_next_trace_t * t0;
1575 b0 = vlib_get_buffer (vm, bi0);
1577 if (b0->flags & VLIB_BUFFER_IS_TRACED)
1579 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
1580 t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
1581 t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
1582 t0->fib_index = (vnet_buffer(b0)->sw_if_index[VLIB_TX] != (u32)~0) ?
1583 vnet_buffer(b0)->sw_if_index[VLIB_TX] :
1584 vec_elt (im->fib_index_by_sw_if_index,
1585 vnet_buffer(b0)->sw_if_index[VLIB_RX]);
1587 clib_memcpy (t0->packet_data,
1588 vlib_buffer_get_current (b0),
1589 sizeof (t0->packet_data));
1597 ip6_drop_or_punt (vlib_main_t * vm,
1598 vlib_node_runtime_t * node,
1599 vlib_frame_t * frame,
1600 ip6_error_t error_code)
1602 u32 * buffers = vlib_frame_vector_args (frame);
1603 uword n_packets = frame->n_vectors;
1605 vlib_error_drop_buffers (vm, node,
1610 ip6_input_node.index,
1613 if (node->flags & VLIB_NODE_FLAG_TRACE)
1614 ip6_forward_next_trace (vm, node, frame, VLIB_TX);
1620 ip6_drop (vlib_main_t * vm,
1621 vlib_node_runtime_t * node,
1622 vlib_frame_t * frame)
1623 { return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_ADJACENCY_DROP); }
1626 ip6_punt (vlib_main_t * vm,
1627 vlib_node_runtime_t * node,
1628 vlib_frame_t * frame)
1629 { return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_ADJACENCY_PUNT); }
1632 ip6_miss (vlib_main_t * vm,
1633 vlib_node_runtime_t * node,
1634 vlib_frame_t * frame)
1635 { return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_DST_LOOKUP_MISS); }
1637 VLIB_REGISTER_NODE (ip6_drop_node,static) = {
1638 .function = ip6_drop,
1640 .vector_size = sizeof (u32),
1642 .format_trace = format_ip6_forward_next_trace,
1650 VLIB_NODE_FUNCTION_MULTIARCH (ip6_drop_node, ip6_drop);
1652 VLIB_REGISTER_NODE (ip6_punt_node,static) = {
1653 .function = ip6_punt,
1655 .vector_size = sizeof (u32),
1657 .format_trace = format_ip6_forward_next_trace,
1665 VLIB_NODE_FUNCTION_MULTIARCH (ip6_punt_node, ip6_punt);
1667 VLIB_REGISTER_NODE (ip6_miss_node,static) = {
1668 .function = ip6_miss,
1670 .vector_size = sizeof (u32),
1672 .format_trace = format_ip6_forward_next_trace,
1680 VLIB_NODE_FUNCTION_MULTIARCH (ip6_miss_node, ip6_miss);
1682 VLIB_REGISTER_NODE (ip6_multicast_node,static) = {
1683 .function = ip6_drop,
1684 .name = "ip6-multicast",
1685 .vector_size = sizeof (u32),
1687 .format_trace = format_ip6_forward_next_trace,
1695 /* Compute TCP/UDP/ICMP6 checksum in software. */
1696 u16 ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, ip6_header_t * ip0, int *bogus_lengthp)
1699 u16 sum16, payload_length_host_byte_order;
1700 u32 i, n_this_buffer, n_bytes_left;
1701 u32 headers_size = sizeof(ip0[0]);
1702 void * data_this_buffer;
1704 ASSERT(bogus_lengthp);
1707 /* Initialize checksum with ip header. */
1708 sum0 = ip0->payload_length + clib_host_to_net_u16 (ip0->protocol);
1709 payload_length_host_byte_order = clib_net_to_host_u16 (ip0->payload_length);
1710 data_this_buffer = (void *) (ip0 + 1);
1712 for (i = 0; i < ARRAY_LEN (ip0->src_address.as_uword); i++)
1714 sum0 = ip_csum_with_carry (sum0,
1715 clib_mem_unaligned (&ip0->src_address.as_uword[i], uword));
1716 sum0 = ip_csum_with_carry (sum0,
1717 clib_mem_unaligned (&ip0->dst_address.as_uword[i], uword));
1720 /* some icmp packets may come with a "router alert" hop-by-hop extension header (e.g., mldv2 packets) */
1721 if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
1724 ip6_hop_by_hop_ext_t *ext_hdr = (ip6_hop_by_hop_ext_t *)data_this_buffer;
1726 /* validate really icmp6 next */
1727 ASSERT(ext_hdr->next_hdr == IP_PROTOCOL_ICMP6);
1729 skip_bytes = 8* (1 + ext_hdr->n_data_u64s);
1730 data_this_buffer = (void *)((u8 *)data_this_buffer + skip_bytes);
1732 payload_length_host_byte_order -= skip_bytes;
1733 headers_size += skip_bytes;
1736 n_bytes_left = n_this_buffer = payload_length_host_byte_order;
1738 if (p0 && n_this_buffer + headers_size > p0->current_length)
1740 struct rte_mbuf *mb = rte_mbuf_from_vlib_buffer(p0);
1741 u8 nb_segs = mb->nb_segs;
1743 n_this_buffer = (p0->current_length > headers_size ?
1744 p0->current_length - headers_size : 0);
1745 while (n_bytes_left)
1747 sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
1748 n_bytes_left -= n_this_buffer;
1752 if ((nb_segs == 0) || (mb == 0))
1755 data_this_buffer = rte_ctrlmbuf_data(mb);
1756 n_this_buffer = mb->data_len;
1758 if (n_bytes_left || nb_segs)
1764 else sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
1766 if (p0 && n_this_buffer + headers_size > p0->current_length)
1767 n_this_buffer = p0->current_length > headers_size ? p0->current_length - headers_size : 0;
1770 sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
1771 n_bytes_left -= n_this_buffer;
1772 if (n_bytes_left == 0)
1775 if (!(p0->flags & VLIB_BUFFER_NEXT_PRESENT))
1780 p0 = vlib_get_buffer (vm, p0->next_buffer);
1781 data_this_buffer = vlib_buffer_get_current (p0);
1782 n_this_buffer = p0->current_length;
1786 sum16 = ~ ip_csum_fold (sum0);
1791 u32 ip6_tcp_udp_icmp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0)
1793 ip6_header_t * ip0 = vlib_buffer_get_current (p0);
1794 udp_header_t * udp0;
1798 /* some icmp packets may come with a "router alert" hop-by-hop extension header (e.g., mldv2 packets) */
1799 ASSERT (ip0->protocol == IP_PROTOCOL_TCP
1800 || ip0->protocol == IP_PROTOCOL_ICMP6
1801 || ip0->protocol == IP_PROTOCOL_UDP
1802 || ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS);
1804 udp0 = (void *) (ip0 + 1);
1805 if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0)
1807 p0->flags |= (IP_BUFFER_L4_CHECKSUM_COMPUTED
1808 | IP_BUFFER_L4_CHECKSUM_CORRECT);
1812 sum16 = ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0, &bogus_length);
1814 p0->flags |= (IP_BUFFER_L4_CHECKSUM_COMPUTED
1815 | ((sum16 == 0) << LOG2_IP_BUFFER_L4_CHECKSUM_CORRECT));
1821 ip6_local (vlib_main_t * vm,
1822 vlib_node_runtime_t * node,
1823 vlib_frame_t * frame)
1825 ip6_main_t * im = &ip6_main;
1826 ip_lookup_main_t * lm = &im->lookup_main;
1827 ip_local_next_t next_index;
1828 u32 * from, * to_next, n_left_from, n_left_to_next;
1829 vlib_node_runtime_t * error_node = vlib_node_get_runtime (vm, ip6_input_node.index);
1831 from = vlib_frame_vector_args (frame);
1832 n_left_from = frame->n_vectors;
1833 next_index = node->cached_next_index;
1835 if (node->flags & VLIB_NODE_FLAG_TRACE)
1836 ip6_forward_next_trace (vm, node, frame, VLIB_TX);
1838 while (n_left_from > 0)
1840 vlib_get_next_frame (vm, node, next_index,
1841 to_next, n_left_to_next);
1843 while (n_left_from >= 4 && n_left_to_next >= 2)
1845 vlib_buffer_t * p0, * p1;
1846 ip6_header_t * ip0, * ip1;
1847 udp_header_t * udp0, * udp1;
1848 u32 pi0, ip_len0, udp_len0, flags0, next0;
1849 u32 pi1, ip_len1, udp_len1, flags1, next1;
1850 i32 len_diff0, len_diff1;
1851 u8 error0, type0, good_l4_checksum0;
1852 u8 error1, type1, good_l4_checksum1;
1854 pi0 = to_next[0] = from[0];
1855 pi1 = to_next[1] = from[1];
1859 n_left_to_next -= 2;
1861 p0 = vlib_get_buffer (vm, pi0);
1862 p1 = vlib_get_buffer (vm, pi1);
1864 ip0 = vlib_buffer_get_current (p0);
1865 ip1 = vlib_buffer_get_current (p1);
1867 type0 = lm->builtin_protocol_by_ip_protocol[ip0->protocol];
1868 type1 = lm->builtin_protocol_by_ip_protocol[ip1->protocol];
1870 next0 = lm->local_next_by_ip_protocol[ip0->protocol];
1871 next1 = lm->local_next_by_ip_protocol[ip1->protocol];
1876 good_l4_checksum0 = (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
1877 good_l4_checksum1 = (flags1 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
1879 udp0 = ip6_next_header (ip0);
1880 udp1 = ip6_next_header (ip1);
1882 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1883 good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UDP && udp0->checksum == 0;
1884 good_l4_checksum1 |= type1 == IP_BUILTIN_PROTOCOL_UDP && udp1->checksum == 0;
1886 good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UNKNOWN;
1887 good_l4_checksum1 |= type1 == IP_BUILTIN_PROTOCOL_UNKNOWN;
1889 /* Verify UDP length. */
1890 ip_len0 = clib_net_to_host_u16 (ip0->payload_length);
1891 ip_len1 = clib_net_to_host_u16 (ip1->payload_length);
1892 udp_len0 = clib_net_to_host_u16 (udp0->length);
1893 udp_len1 = clib_net_to_host_u16 (udp1->length);
1895 len_diff0 = ip_len0 - udp_len0;
1896 len_diff1 = ip_len1 - udp_len1;
1898 len_diff0 = type0 == IP_BUILTIN_PROTOCOL_UDP ? len_diff0 : 0;
1899 len_diff1 = type1 == IP_BUILTIN_PROTOCOL_UDP ? len_diff1 : 0;
1901 if (PREDICT_FALSE (type0 != IP_BUILTIN_PROTOCOL_UNKNOWN
1902 && ! good_l4_checksum0
1903 && ! (flags0 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
1905 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, p0);
1907 (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
1909 if (PREDICT_FALSE (type1 != IP_BUILTIN_PROTOCOL_UNKNOWN
1910 && ! good_l4_checksum1
1911 && ! (flags1 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
1913 flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, p1);
1915 (flags1 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
1918 error0 = error1 = IP6_ERROR_UNKNOWN_PROTOCOL;
1920 error0 = len_diff0 < 0 ? IP6_ERROR_UDP_LENGTH : error0;
1921 error1 = len_diff1 < 0 ? IP6_ERROR_UDP_LENGTH : error1;
1923 ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP == IP6_ERROR_UDP_CHECKSUM);
1924 ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP == IP6_ERROR_ICMP_CHECKSUM);
1925 error0 = (! good_l4_checksum0
1926 ? IP6_ERROR_UDP_CHECKSUM + type0
1928 error1 = (! good_l4_checksum1
1929 ? IP6_ERROR_UDP_CHECKSUM + type1
1932 /* Drop packets from unroutable hosts. */
1933 /* If this is a neighbor solicitation (ICMP), skip source RPF check */
1934 if (error0 == IP6_ERROR_UNKNOWN_PROTOCOL && type0 != IP_BUILTIN_PROTOCOL_ICMP)
1936 u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1937 error0 = (lm->miss_adj_index == src_adj_index0
1938 ? IP6_ERROR_SRC_LOOKUP_MISS
1941 if (error1 == IP6_ERROR_UNKNOWN_PROTOCOL && type1 != IP_BUILTIN_PROTOCOL_ICMP)
1943 u32 src_adj_index1 = ip6_src_lookup_for_packet (im, p1, ip1);
1944 error1 = (lm->miss_adj_index == src_adj_index1
1945 ? IP6_ERROR_SRC_LOOKUP_MISS
1949 next0 = error0 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0;
1950 next1 = error1 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next1;
1952 p0->error = error_node->errors[error0];
1953 p1->error = error_node->errors[error1];
1955 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1956 to_next, n_left_to_next,
1957 pi0, pi1, next0, next1);
1960 while (n_left_from > 0 && n_left_to_next > 0)
1964 udp_header_t * udp0;
1965 u32 pi0, ip_len0, udp_len0, flags0, next0;
1967 u8 error0, type0, good_l4_checksum0;
1969 pi0 = to_next[0] = from[0];
1973 n_left_to_next -= 1;
1975 p0 = vlib_get_buffer (vm, pi0);
1977 ip0 = vlib_buffer_get_current (p0);
1979 type0 = lm->builtin_protocol_by_ip_protocol[ip0->protocol];
1980 next0 = lm->local_next_by_ip_protocol[ip0->protocol];
1984 good_l4_checksum0 = (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
1986 udp0 = ip6_next_header (ip0);
1988 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1989 good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UDP && udp0->checksum == 0;
1991 good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UNKNOWN;
1993 /* Verify UDP length. */
1994 ip_len0 = clib_net_to_host_u16 (ip0->payload_length);
1995 udp_len0 = clib_net_to_host_u16 (udp0->length);
1997 len_diff0 = ip_len0 - udp_len0;
1999 len_diff0 = type0 == IP_BUILTIN_PROTOCOL_UDP ? len_diff0 : 0;
2001 if (PREDICT_FALSE (type0 != IP_BUILTIN_PROTOCOL_UNKNOWN
2002 && ! good_l4_checksum0
2003 && ! (flags0 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
2005 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, p0);
2007 (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
2010 error0 = IP6_ERROR_UNKNOWN_PROTOCOL;
2012 error0 = len_diff0 < 0 ? IP6_ERROR_UDP_LENGTH : error0;
2014 ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP == IP6_ERROR_UDP_CHECKSUM);
2015 ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP == IP6_ERROR_ICMP_CHECKSUM);
2016 error0 = (! good_l4_checksum0
2017 ? IP6_ERROR_UDP_CHECKSUM + type0
2020 /* If this is a neighbor solicitation (ICMP), skip source RPF check */
2021 if (error0 == IP6_ERROR_UNKNOWN_PROTOCOL && type0 != IP_BUILTIN_PROTOCOL_ICMP)
2023 u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
2024 error0 = (lm->miss_adj_index == src_adj_index0
2025 ? IP6_ERROR_SRC_LOOKUP_MISS
2029 next0 = error0 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0;
2031 p0->error = error_node->errors[error0];
2033 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2034 to_next, n_left_to_next,
2038 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2041 return frame->n_vectors;
2044 VLIB_REGISTER_NODE (ip6_local_node,static) = {
2045 .function = ip6_local,
2046 .name = "ip6-local",
2047 .vector_size = sizeof (u32),
2049 .format_trace = format_ip6_forward_next_trace,
2051 .n_next_nodes = IP_LOCAL_N_NEXT,
2053 [IP_LOCAL_NEXT_DROP] = "error-drop",
2054 [IP_LOCAL_NEXT_PUNT] = "error-punt",
2055 [IP_LOCAL_NEXT_UDP_LOOKUP] = "ip6-udp-lookup",
2056 [IP_LOCAL_NEXT_ICMP] = "ip6-icmp-input",
2060 VLIB_NODE_FUNCTION_MULTIARCH (ip6_local_node, ip6_local);
2062 void ip6_register_protocol (u32 protocol, u32 node_index)
2064 vlib_main_t * vm = vlib_get_main();
2065 ip6_main_t * im = &ip6_main;
2066 ip_lookup_main_t * lm = &im->lookup_main;
2068 ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol));
2069 lm->local_next_by_ip_protocol[protocol] = vlib_node_add_next (vm, ip6_local_node.index, node_index);
2073 IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
2074 IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX,
2075 IP6_DISCOVER_NEIGHBOR_N_NEXT,
2076 } ip6_discover_neighbor_next_t;
2079 IP6_DISCOVER_NEIGHBOR_ERROR_DROP,
2080 IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT,
2081 IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS,
2082 } ip6_discover_neighbor_error_t;
2085 ip6_discover_neighbor (vlib_main_t * vm,
2086 vlib_node_runtime_t * node,
2087 vlib_frame_t * frame)
2089 vnet_main_t * vnm = vnet_get_main();
2090 ip6_main_t * im = &ip6_main;
2091 ip_lookup_main_t * lm = &im->lookup_main;
2092 u32 * from, * to_next_drop;
2093 uword n_left_from, n_left_to_next_drop;
2094 static f64 time_last_seed_change = -1e100;
2095 static u32 hash_seeds[3];
2096 static uword hash_bitmap[256 / BITS (uword)];
2100 if (node->flags & VLIB_NODE_FLAG_TRACE)
2101 ip6_forward_next_trace (vm, node, frame, VLIB_TX);
2103 time_now = vlib_time_now (vm);
2104 if (time_now - time_last_seed_change > 1e-3)
2107 u32 * r = clib_random_buffer_get_data (&vm->random_buffer,
2108 sizeof (hash_seeds));
2109 for (i = 0; i < ARRAY_LEN (hash_seeds); i++)
2110 hash_seeds[i] = r[i];
2112 /* Mark all hash keys as been not-seen before. */
2113 for (i = 0; i < ARRAY_LEN (hash_bitmap); i++)
2116 time_last_seed_change = time_now;
2119 from = vlib_frame_vector_args (frame);
2120 n_left_from = frame->n_vectors;
2122 while (n_left_from > 0)
2124 vlib_get_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
2125 to_next_drop, n_left_to_next_drop);
2127 while (n_left_from > 0 && n_left_to_next_drop > 0)
2131 u32 pi0, adj_index0, a0, b0, c0, m0, sw_if_index0, drop0;
2133 ip_adjacency_t * adj0;
2134 vnet_hw_interface_t * hw_if0;
2139 p0 = vlib_get_buffer (vm, pi0);
2141 adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
2143 ip0 = vlib_buffer_get_current (p0);
2145 adj0 = ip_get_adjacency (lm, adj_index0);
2147 if (adj0->arp.next_hop.ip6.as_u64[0] ||
2148 adj0->arp.next_hop.ip6.as_u64[1]) {
2149 ip0->dst_address.as_u64[0] = adj0->arp.next_hop.ip6.as_u64[0];
2150 ip0->dst_address.as_u64[1] = adj0->arp.next_hop.ip6.as_u64[1];
2157 sw_if_index0 = adj0->rewrite_header.sw_if_index;
2158 vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
2161 b0 ^= ip0->dst_address.as_u32[0];
2162 c0 ^= ip0->dst_address.as_u32[1];
2164 hash_v3_mix32 (a0, b0, c0);
2166 b0 ^= ip0->dst_address.as_u32[2];
2167 c0 ^= ip0->dst_address.as_u32[3];
2169 hash_v3_finalize32 (a0, b0, c0);
2171 c0 &= BITS (hash_bitmap) - 1;
2172 c0 = c0 / BITS (uword);
2173 m0 = (uword) 1 << (c0 % BITS (uword));
2175 bm0 = hash_bitmap[c0];
2176 drop0 = (bm0 & m0) != 0;
2178 /* Mark it as seen. */
2179 hash_bitmap[c0] = bm0 | m0;
2183 to_next_drop[0] = pi0;
2185 n_left_to_next_drop -= 1;
2187 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
2189 /* If the interface is link-down, drop the pkt */
2190 if (!(hw_if0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
2194 node->errors[drop0 ? IP6_DISCOVER_NEIGHBOR_ERROR_DROP
2195 : IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT];
2201 icmp6_neighbor_solicitation_header_t * h0;
2204 h0 = vlib_packet_template_get_packet
2205 (vm, &im->discover_neighbor_packet_template, &bi0);
2208 * Build ethernet header.
2209 * Choose source address based on destination lookup
2212 if (ip6_src_address_for_packet (im, p0, &h0->ip.src_address,
2214 //There is no address on the interface
2215 p0->error = node->errors[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS];
2216 vlib_buffer_free(vm, &bi0, 1);
2221 * Destination address is a solicited node multicast address.
2222 * We need to fill in
2223 * the low 24 bits with low 24 bits of target's address.
2225 h0->ip.dst_address.as_u8[13] = ip0->dst_address.as_u8[13];
2226 h0->ip.dst_address.as_u8[14] = ip0->dst_address.as_u8[14];
2227 h0->ip.dst_address.as_u8[15] = ip0->dst_address.as_u8[15];
2229 h0->neighbor.target_address = ip0->dst_address;
2231 clib_memcpy (h0->link_layer_option.ethernet_address,
2232 hw_if0->hw_address, vec_len (hw_if0->hw_address));
2234 /* $$$$ appears we need this; why is the checksum non-zero? */
2235 h0->neighbor.icmp.checksum = 0;
2236 h0->neighbor.icmp.checksum =
2237 ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h0->ip,
2240 ASSERT (bogus_length == 0);
2242 vlib_buffer_copy_trace_flag (vm, p0, bi0);
2243 b0 = vlib_get_buffer (vm, bi0);
2244 vnet_buffer (b0)->sw_if_index[VLIB_TX]
2245 = vnet_buffer (p0)->sw_if_index[VLIB_TX];
2247 /* Add rewrite/encap string. */
2248 vnet_rewrite_one_header (adj0[0], h0,
2249 sizeof (ethernet_header_t));
2250 vlib_buffer_advance (b0, -adj0->rewrite_header.data_bytes);
2252 next0 = IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX;
2254 vlib_set_next_frame_buffer (vm, node, next0, bi0);
2258 vlib_put_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
2259 n_left_to_next_drop);
2262 return frame->n_vectors;
2265 static char * ip6_discover_neighbor_error_strings[] = {
2266 [IP6_DISCOVER_NEIGHBOR_ERROR_DROP] = "address overflow drops",
2267 [IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT]
2268 = "neighbor solicitations sent",
2269 [IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS]
2270 = "no source address for ND solicitation",
2273 VLIB_REGISTER_NODE (ip6_discover_neighbor_node) = {
2274 .function = ip6_discover_neighbor,
2275 .name = "ip6-discover-neighbor",
2276 .vector_size = sizeof (u32),
2278 .format_trace = format_ip6_forward_next_trace,
2280 .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
2281 .error_strings = ip6_discover_neighbor_error_strings,
2283 .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
2285 [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "error-drop",
2286 [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "interface-output",
2291 ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, u32 sw_if_index)
2293 vnet_main_t * vnm = vnet_get_main();
2294 ip6_main_t * im = &ip6_main;
2295 icmp6_neighbor_solicitation_header_t * h;
2296 ip6_address_t * src;
2297 ip_interface_address_t * ia;
2298 ip_adjacency_t * adj;
2299 vnet_hw_interface_t * hi;
2300 vnet_sw_interface_t * si;
2305 si = vnet_get_sw_interface (vnm, sw_if_index);
2307 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
2309 return clib_error_return (0, "%U: interface %U down",
2310 format_ip6_address, dst,
2311 format_vnet_sw_if_index_name, vnm,
2315 src = ip6_interface_address_matching_destination (im, dst, sw_if_index, &ia);
2318 vnm->api_errno = VNET_API_ERROR_NO_MATCHING_INTERFACE;
2319 return clib_error_return
2320 (0, "no matching interface address for destination %U (interface %U)",
2321 format_ip6_address, dst,
2322 format_vnet_sw_if_index_name, vnm, sw_if_index);
2325 h = vlib_packet_template_get_packet (vm, &im->discover_neighbor_packet_template, &bi);
2327 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
2329 /* Destination address is a solicited node multicast address. We need to fill in
2330 the low 24 bits with low 24 bits of target's address. */
2331 h->ip.dst_address.as_u8[13] = dst->as_u8[13];
2332 h->ip.dst_address.as_u8[14] = dst->as_u8[14];
2333 h->ip.dst_address.as_u8[15] = dst->as_u8[15];
2335 h->ip.src_address = src[0];
2336 h->neighbor.target_address = dst[0];
2338 clib_memcpy (h->link_layer_option.ethernet_address, hi->hw_address, vec_len (hi->hw_address));
2340 h->neighbor.icmp.checksum =
2341 ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
2342 ASSERT(bogus_length == 0);
2344 b = vlib_get_buffer (vm, bi);
2345 vnet_buffer (b)->sw_if_index[VLIB_RX] = vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
2347 /* Add encapsulation string for software interface (e.g. ethernet header). */
2348 adj = ip_get_adjacency (&im->lookup_main, ia->neighbor_probe_adj_index);
2349 vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
2350 vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
2353 vlib_frame_t * f = vlib_get_frame_to_node (vm, hi->output_node_index);
2354 u32 * to_next = vlib_frame_vector_args (f);
2357 vlib_put_frame_to_node (vm, hi->output_node_index, f);
2360 return /* no error */ 0;
2364 IP6_REWRITE_NEXT_DROP,
2365 IP6_REWRITE_NEXT_ICMP_ERROR,
2366 } ip6_rewrite_next_t;
2369 ip6_rewrite_inline (vlib_main_t * vm,
2370 vlib_node_runtime_t * node,
2371 vlib_frame_t * frame,
2372 int rewrite_for_locally_received_packets)
2374 ip_lookup_main_t * lm = &ip6_main.lookup_main;
2375 u32 * from = vlib_frame_vector_args (frame);
2376 u32 n_left_from, n_left_to_next, * to_next, next_index;
2377 vlib_node_runtime_t * error_node = vlib_node_get_runtime (vm, ip6_input_node.index);
2378 vlib_rx_or_tx_t adj_rx_tx = rewrite_for_locally_received_packets ? VLIB_RX : VLIB_TX;
2379 ip_config_main_t * cm = &lm->feature_config_mains[VNET_IP_TX_FEAT];
2381 n_left_from = frame->n_vectors;
2382 next_index = node->cached_next_index;
2383 u32 cpu_index = os_get_cpu_number();
2385 while (n_left_from > 0)
2387 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
2389 while (n_left_from >= 4 && n_left_to_next >= 2)
2391 ip_adjacency_t * adj0, * adj1;
2392 vlib_buffer_t * p0, * p1;
2393 ip6_header_t * ip0, * ip1;
2394 u32 pi0, rw_len0, next0, error0, adj_index0;
2395 u32 pi1, rw_len1, next1, error1, adj_index1;
2396 u32 tx_sw_if_index0, tx_sw_if_index1;
2398 /* Prefetch next iteration. */
2400 vlib_buffer_t * p2, * p3;
2402 p2 = vlib_get_buffer (vm, from[2]);
2403 p3 = vlib_get_buffer (vm, from[3]);
2405 vlib_prefetch_buffer_header (p2, LOAD);
2406 vlib_prefetch_buffer_header (p3, LOAD);
2408 CLIB_PREFETCH (p2->pre_data, 32, STORE);
2409 CLIB_PREFETCH (p3->pre_data, 32, STORE);
2411 CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE);
2412 CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE);
2415 pi0 = to_next[0] = from[0];
2416 pi1 = to_next[1] = from[1];
2421 n_left_to_next -= 2;
2423 p0 = vlib_get_buffer (vm, pi0);
2424 p1 = vlib_get_buffer (vm, pi1);
2426 adj_index0 = vnet_buffer (p0)->ip.adj_index[adj_rx_tx];
2427 adj_index1 = vnet_buffer (p1)->ip.adj_index[adj_rx_tx];
2429 /* We should never rewrite a pkt using the MISS adjacency */
2430 ASSERT(adj_index0 && adj_index1);
2432 ip0 = vlib_buffer_get_current (p0);
2433 ip1 = vlib_buffer_get_current (p1);
2435 error0 = error1 = IP6_ERROR_NONE;
2436 next0 = next1 = IP6_REWRITE_NEXT_DROP;
2438 if (! rewrite_for_locally_received_packets)
2440 i32 hop_limit0 = ip0->hop_limit, hop_limit1 = ip1->hop_limit;
2442 /* Input node should have reject packets with hop limit 0. */
2443 ASSERT (ip0->hop_limit > 0);
2444 ASSERT (ip1->hop_limit > 0);
2449 ip0->hop_limit = hop_limit0;
2450 ip1->hop_limit = hop_limit1;
2453 * If the hop count drops below 1 when forwarding, generate
2456 if (PREDICT_FALSE(hop_limit0 <= 0))
2458 error0 = IP6_ERROR_TIME_EXPIRED;
2459 next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
2460 vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32)~0;
2461 icmp6_error_set_vnet_buffer(p0, ICMP6_time_exceeded,
2462 ICMP6_time_exceeded_ttl_exceeded_in_transit, 0);
2464 if (PREDICT_FALSE(hop_limit1 <= 0))
2466 error1 = IP6_ERROR_TIME_EXPIRED;
2467 next1 = IP6_REWRITE_NEXT_ICMP_ERROR;
2468 vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32)~0;
2469 icmp6_error_set_vnet_buffer(p1, ICMP6_time_exceeded,
2470 ICMP6_time_exceeded_ttl_exceeded_in_transit, 0);
2474 adj0 = ip_get_adjacency (lm, adj_index0);
2475 adj1 = ip_get_adjacency (lm, adj_index1);
2477 if (rewrite_for_locally_received_packets)
2480 * If someone sends e.g. an icmp6 w/ src = dst = interface addr,
2481 * we end up here with a local adjacency in hand
2483 if (PREDICT_FALSE(adj0->lookup_next_index
2484 == IP_LOOKUP_NEXT_LOCAL))
2485 error0 = IP6_ERROR_SPOOFED_LOCAL_PACKETS;
2486 if (PREDICT_FALSE(adj1->lookup_next_index
2487 == IP_LOOKUP_NEXT_LOCAL))
2488 error1 = IP6_ERROR_SPOOFED_LOCAL_PACKETS;
2491 rw_len0 = adj0[0].rewrite_header.data_bytes;
2492 rw_len1 = adj1[0].rewrite_header.data_bytes;
2493 vnet_buffer(p0)->ip.save_rewrite_length = rw_len0;
2494 vnet_buffer(p1)->ip.save_rewrite_length = rw_len1;
2496 vlib_increment_combined_counter (&lm->adjacency_counters,
2499 /* packet increment */ 0,
2500 /* byte increment */ rw_len0);
2501 vlib_increment_combined_counter (&lm->adjacency_counters,
2504 /* packet increment */ 0,
2505 /* byte increment */ rw_len1);
2507 /* Check MTU of outgoing interface. */
2508 error0 = (vlib_buffer_length_in_chain (vm, p0) > adj0[0].rewrite_header.max_l3_packet_bytes
2509 ? IP6_ERROR_MTU_EXCEEDED
2511 error1 = (vlib_buffer_length_in_chain (vm, p1) > adj1[0].rewrite_header.max_l3_packet_bytes
2512 ? IP6_ERROR_MTU_EXCEEDED
2515 /* Don't adjust the buffer for hop count issue; icmp-error node
2516 * wants to see the IP headerr */
2517 if (PREDICT_TRUE(error0 == IP6_ERROR_NONE))
2519 p0->current_data -= rw_len0;
2520 p0->current_length += rw_len0;
2522 tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
2523 vnet_buffer (p0)->sw_if_index[VLIB_TX] =
2525 next0 = adj0[0].rewrite_header.next_index;
2528 (clib_bitmap_get (lm->tx_sw_if_has_ip_output_features,
2531 p0->current_config_index =
2532 vec_elt (cm->config_index_by_sw_if_index,
2534 vnet_get_config_data (&cm->config_main,
2535 &p0->current_config_index,
2537 /* # bytes of config data */ 0);
2540 if (PREDICT_TRUE(error1 == IP6_ERROR_NONE))
2542 p1->current_data -= rw_len1;
2543 p1->current_length += rw_len1;
2545 tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index;
2546 vnet_buffer (p1)->sw_if_index[VLIB_TX] =
2548 next1 = adj1[0].rewrite_header.next_index;
2551 (clib_bitmap_get (lm->tx_sw_if_has_ip_output_features,
2554 p1->current_config_index =
2555 vec_elt (cm->config_index_by_sw_if_index,
2557 vnet_get_config_data (&cm->config_main,
2558 &p1->current_config_index,
2560 /* # bytes of config data */ 0);
2564 /* Guess we are only writing on simple Ethernet header. */
2565 vnet_rewrite_two_headers (adj0[0], adj1[0],
2567 sizeof (ethernet_header_t));
2569 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
2570 to_next, n_left_to_next,
2571 pi0, pi1, next0, next1);
2574 while (n_left_from > 0 && n_left_to_next > 0)
2576 ip_adjacency_t * adj0;
2580 u32 adj_index0, next0, error0;
2581 u32 tx_sw_if_index0;
2583 pi0 = to_next[0] = from[0];
2585 p0 = vlib_get_buffer (vm, pi0);
2587 adj_index0 = vnet_buffer (p0)->ip.adj_index[adj_rx_tx];
2589 /* We should never rewrite a pkt using the MISS adjacency */
2592 adj0 = ip_get_adjacency (lm, adj_index0);
2594 ip0 = vlib_buffer_get_current (p0);
2596 error0 = IP6_ERROR_NONE;
2597 next0 = IP6_REWRITE_NEXT_DROP;
2599 /* Check hop limit */
2600 if (! rewrite_for_locally_received_packets)
2602 i32 hop_limit0 = ip0->hop_limit;
2604 ASSERT (ip0->hop_limit > 0);
2608 ip0->hop_limit = hop_limit0;
2610 if (PREDICT_FALSE(hop_limit0 <= 0))
2613 * If the hop count drops below 1 when forwarding, generate
2616 error0 = IP6_ERROR_TIME_EXPIRED;
2617 next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
2618 vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32)~0;
2619 icmp6_error_set_vnet_buffer(p0, ICMP6_time_exceeded,
2620 ICMP6_time_exceeded_ttl_exceeded_in_transit, 0);
2624 if (rewrite_for_locally_received_packets)
2626 if (PREDICT_FALSE(adj0->lookup_next_index
2627 == IP_LOOKUP_NEXT_LOCAL))
2628 error0 = IP6_ERROR_SPOOFED_LOCAL_PACKETS;
2631 /* Guess we are only writing on simple Ethernet header. */
2632 vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t));
2634 /* Update packet buffer attributes/set output interface. */
2635 rw_len0 = adj0[0].rewrite_header.data_bytes;
2636 vnet_buffer(p0)->ip.save_rewrite_length = rw_len0;
2638 vlib_increment_combined_counter (&lm->adjacency_counters,
2641 /* packet increment */ 0,
2642 /* byte increment */ rw_len0);
2644 /* Check MTU of outgoing interface. */
2645 error0 = (vlib_buffer_length_in_chain (vm, p0) > adj0[0].rewrite_header.max_l3_packet_bytes
2646 ? IP6_ERROR_MTU_EXCEEDED
2649 /* Don't adjust the buffer for hop count issue; icmp-error node
2650 * wants to see the IP headerr */
2651 if (PREDICT_TRUE(error0 == IP6_ERROR_NONE))
2653 p0->current_data -= rw_len0;
2654 p0->current_length += rw_len0;
2656 tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
2658 vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0;
2659 next0 = adj0[0].rewrite_header.next_index;
2662 (clib_bitmap_get (lm->tx_sw_if_has_ip_output_features,
2665 p0->current_config_index =
2666 vec_elt (cm->config_index_by_sw_if_index,
2668 vnet_get_config_data (&cm->config_main,
2669 &p0->current_config_index,
2671 /* # bytes of config data */ 0);
2675 p0->error = error_node->errors[error0];
2680 n_left_to_next -= 1;
2682 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2683 to_next, n_left_to_next,
2687 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2690 /* Need to do trace after rewrites to pick up new packet data. */
2691 if (node->flags & VLIB_NODE_FLAG_TRACE)
2692 ip6_forward_next_trace (vm, node, frame, adj_rx_tx);
2694 return frame->n_vectors;
2698 ip6_rewrite_transit (vlib_main_t * vm,
2699 vlib_node_runtime_t * node,
2700 vlib_frame_t * frame)
2702 return ip6_rewrite_inline (vm, node, frame,
2703 /* rewrite_for_locally_received_packets */ 0);
2707 ip6_rewrite_local (vlib_main_t * vm,
2708 vlib_node_runtime_t * node,
2709 vlib_frame_t * frame)
2711 return ip6_rewrite_inline (vm, node, frame,
2712 /* rewrite_for_locally_received_packets */ 1);
2715 VLIB_REGISTER_NODE (ip6_rewrite_node) = {
2716 .function = ip6_rewrite_transit,
2717 .name = "ip6-rewrite",
2718 .vector_size = sizeof (u32),
2720 .format_trace = format_ip6_rewrite_trace,
2724 [IP6_REWRITE_NEXT_DROP] = "error-drop",
2725 [IP6_REWRITE_NEXT_ICMP_ERROR] = "ip6-icmp-error",
2729 VLIB_NODE_FUNCTION_MULTIARCH (ip6_rewrite_node, ip6_rewrite_transit);
2731 VLIB_REGISTER_NODE (ip6_rewrite_local_node) = {
2732 .function = ip6_rewrite_local,
2733 .name = "ip6-rewrite-local",
2734 .vector_size = sizeof (u32),
2736 .sibling_of = "ip6-rewrite",
2738 .format_trace = format_ip6_rewrite_trace,
2743 VLIB_NODE_FUNCTION_MULTIARCH (ip6_rewrite_local_node, ip6_rewrite_local);
2746 * Hop-by-Hop handling
2749 ip6_hop_by_hop_main_t ip6_hop_by_hop_main;
2751 #define foreach_ip6_hop_by_hop_error \
2752 _(PROCESSED, "pkts with ip6 hop-by-hop options") \
2753 _(FORMAT, "incorrectly formatted hop-by-hop options") \
2754 _(UNKNOWN_OPTION, "unknown ip6 hop-by-hop options")
2757 #define _(sym,str) IP6_HOP_BY_HOP_ERROR_##sym,
2758 foreach_ip6_hop_by_hop_error
2760 IP6_HOP_BY_HOP_N_ERROR,
2761 } ip6_hop_by_hop_error_t;
2764 * Primary h-b-h handler trace support
2765 * We work pretty hard on the problem for obvious reasons
2770 u8 option_data[256];
2771 } ip6_hop_by_hop_trace_t;
2773 vlib_node_registration_t ip6_hop_by_hop_node;
2775 static char * ip6_hop_by_hop_error_strings[] = {
2776 #define _(sym,string) string,
2777 foreach_ip6_hop_by_hop_error
2782 format_ip6_hop_by_hop_trace (u8 * s, va_list * args)
2784 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2785 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2786 ip6_hop_by_hop_trace_t * t = va_arg (*args, ip6_hop_by_hop_trace_t *);
2787 ip6_hop_by_hop_header_t *hbh0;
2788 ip6_hop_by_hop_option_t *opt0, *limit0;
2789 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2793 hbh0 = (ip6_hop_by_hop_header_t *)t->option_data;
2795 s = format (s, "IP6_HOP_BY_HOP: next index %d len %d traced %d",
2796 t->next_index, (hbh0->length+1)<<3, t->trace_len);
2798 opt0 = (ip6_hop_by_hop_option_t *) (hbh0+1);
2799 limit0 = (ip6_hop_by_hop_option_t *) ((u8 *)hbh0) + t->trace_len;
2801 while (opt0 < limit0) {
2804 case 0: /* Pad, just stop */
2805 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *)opt0) + 1;
2809 if (hm->trace[type0]) {
2810 s = (*hm->trace[type0])(s, opt0);
2812 s = format (s, "\n unrecognized option %d length %d", type0, opt0->length);
2814 opt0 = (ip6_hop_by_hop_option_t *) (((u8 *)opt0) + opt0->length + sizeof (ip6_hop_by_hop_option_t));
2821 always_inline u8 ip6_scan_hbh_options (
2824 ip6_hop_by_hop_header_t *hbh0,
2825 ip6_hop_by_hop_option_t *opt0,
2826 ip6_hop_by_hop_option_t *limit0,
2829 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2833 while (opt0 < limit0)
2839 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *)opt0) + 1;
2844 if (hm->options[type0])
2846 if ((*hm->options[type0])(b0, ip0, opt0) < 0)
2848 error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
2854 /* Unrecognized mandatory option, check the two high order bits */
2855 switch (opt0->type & HBH_OPTION_TYPE_HIGH_ORDER_BITS)
2857 case HBH_OPTION_TYPE_SKIP_UNKNOWN:
2859 case HBH_OPTION_TYPE_DISCARD_UNKNOWN:
2860 error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
2861 *next0 = IP_LOOKUP_NEXT_DROP;
2863 case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP:
2864 error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
2865 *next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
2866 icmp6_error_set_vnet_buffer(b0, ICMP6_parameter_problem,
2867 ICMP6_parameter_problem_unrecognized_option, (u8 *)opt0 - (u8 *)ip0);
2869 case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP_NOT_MCAST:
2870 error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
2871 if (!ip6_address_is_multicast(&ip0->dst_address))
2873 *next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
2874 icmp6_error_set_vnet_buffer(b0, ICMP6_parameter_problem,
2875 ICMP6_parameter_problem_unrecognized_option, (u8 *)opt0 - (u8 *)ip0);
2879 *next0 = IP_LOOKUP_NEXT_DROP;
2886 opt0 = (ip6_hop_by_hop_option_t *) (((u8 *)opt0) + opt0->length + sizeof (ip6_hop_by_hop_option_t));
2892 * Process the Hop-by-Hop Options header
2895 ip6_hop_by_hop (vlib_main_t * vm,
2896 vlib_node_runtime_t * node,
2897 vlib_frame_t * frame)
2899 vlib_node_runtime_t *error_node = vlib_node_get_runtime(vm, ip6_hop_by_hop_node.index);
2900 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2901 u32 n_left_from, *from, *to_next;
2902 ip_lookup_next_t next_index;
2903 ip6_main_t * im = &ip6_main;
2904 ip_lookup_main_t *lm = &im->lookup_main;
2906 from = vlib_frame_vector_args (frame);
2907 n_left_from = frame->n_vectors;
2908 next_index = node->cached_next_index;
2910 while (n_left_from > 0) {
2913 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
2915 while (n_left_from >= 4 && n_left_to_next >= 2) {
2917 vlib_buffer_t * b0, *b1;
2919 ip6_header_t * ip0, *ip1;
2920 ip6_hop_by_hop_header_t *hbh0, *hbh1;
2921 ip6_hop_by_hop_option_t *opt0, *limit0, *opt1, *limit1;
2922 u8 error0 = 0, error1 = 0;
2924 /* Prefetch next iteration. */
2926 vlib_buffer_t * p2, * p3;
2928 p2 = vlib_get_buffer (vm, from[2]);
2929 p3 = vlib_get_buffer (vm, from[3]);
2931 vlib_prefetch_buffer_header (p2, LOAD);
2932 vlib_prefetch_buffer_header (p3, LOAD);
2934 CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
2935 CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
2938 /* Speculatively enqueue b0, b1 to the current next frame */
2939 to_next[0] = bi0 = from[0];
2940 to_next[1] = bi1 = from[1];
2944 n_left_to_next -= 2;
2946 b0 = vlib_get_buffer (vm, bi0);
2947 b1 = vlib_get_buffer (vm, bi1);
2948 u32 adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
2949 ip_adjacency_t *adj0 = ip_get_adjacency(lm, adj_index0);
2950 u32 adj_index1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
2951 ip_adjacency_t *adj1 = ip_get_adjacency(lm, adj_index1);
2953 /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
2954 next0 = adj0->lookup_next_index;
2955 next1 = adj1->lookup_next_index;
2957 ip0 = vlib_buffer_get_current (b0);
2958 ip1 = vlib_buffer_get_current (b1);
2959 hbh0 = (ip6_hop_by_hop_header_t *)(ip0+1);
2960 hbh1 = (ip6_hop_by_hop_header_t *)(ip1+1);
2961 opt0 = (ip6_hop_by_hop_option_t *)(hbh0+1);
2962 opt1 = (ip6_hop_by_hop_option_t *)(hbh1+1);
2963 limit0 = (ip6_hop_by_hop_option_t *)((u8 *)hbh0 + ((hbh0->length + 1) << 3));
2964 limit1 = (ip6_hop_by_hop_option_t *)((u8 *)hbh1 + ((hbh1->length + 1) << 3));
2967 * Basic validity checks
2969 if ((hbh0->length + 1) << 3 > clib_net_to_host_u16(ip0->payload_length)) {
2970 error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
2971 next0 = IP_LOOKUP_NEXT_DROP;
2974 /* Scan the set of h-b-h options, process ones that we understand */
2975 error0 = ip6_scan_hbh_options(b0, ip0, hbh0, opt0, limit0, &next0);
2977 if ((hbh1->length + 1) << 3 > clib_net_to_host_u16(ip1->payload_length)) {
2978 error1 = IP6_HOP_BY_HOP_ERROR_FORMAT;
2979 next1 = IP_LOOKUP_NEXT_DROP;
2982 /* Scan the set of h-b-h options, process ones that we understand */
2983 error1 = ip6_scan_hbh_options(b1,ip1,hbh1,opt1,limit1, &next1);
2986 /* Has the classifier flagged this buffer for special treatment? */
2987 if ((error0 == 0) && (vnet_buffer(b0)->l2_classify.opaque_index == OI_DECAP))
2988 next0 = hm->next_override;
2990 /* Has the classifier flagged this buffer for special treatment? */
2991 if ((error1 == 0) && (vnet_buffer(b1)->l2_classify.opaque_index == OI_DECAP))
2992 next1 = hm->next_override;
2994 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)))
2996 if (b0->flags & VLIB_BUFFER_IS_TRACED) {
2997 ip6_hop_by_hop_trace_t *t = vlib_add_trace(vm, node, b0, sizeof (*t));
2998 u32 trace_len = (hbh0->length + 1) << 3;
2999 t->next_index = next0;
3000 /* Capture the h-b-h option verbatim */
3001 trace_len = trace_len < ARRAY_LEN(t->option_data) ? trace_len : ARRAY_LEN(t->option_data);
3002 t->trace_len = trace_len;
3003 clib_memcpy(t->option_data, hbh0, trace_len);
3005 if (b1->flags & VLIB_BUFFER_IS_TRACED) {
3006 ip6_hop_by_hop_trace_t *t = vlib_add_trace(vm, node, b1, sizeof (*t));
3007 u32 trace_len = (hbh1->length + 1) << 3;
3008 t->next_index = next1;
3009 /* Capture the h-b-h option verbatim */
3010 trace_len = trace_len < ARRAY_LEN(t->option_data) ? trace_len : ARRAY_LEN(t->option_data);
3011 t->trace_len = trace_len;
3012 clib_memcpy(t->option_data, hbh1, trace_len);
3017 b0->error = error_node->errors[error0];
3018 b1->error = error_node->errors[error1];
3020 /* verify speculative enqueue, maybe switch current next frame */
3021 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, bi0,
3025 while (n_left_from > 0 && n_left_to_next > 0) {
3030 ip6_hop_by_hop_header_t *hbh0;
3031 ip6_hop_by_hop_option_t *opt0, *limit0;
3034 /* Speculatively enqueue b0 to the current next frame */
3040 n_left_to_next -= 1;
3042 b0 = vlib_get_buffer (vm, bi0);
3043 u32 adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
3044 ip_adjacency_t *adj0 = ip_get_adjacency(lm, adj_index0);
3045 /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
3046 next0 = adj0->lookup_next_index;
3048 ip0 = vlib_buffer_get_current (b0);
3049 hbh0 = (ip6_hop_by_hop_header_t *)(ip0+1);
3050 opt0 = (ip6_hop_by_hop_option_t *)(hbh0+1);
3051 limit0 = (ip6_hop_by_hop_option_t *)((u8 *)hbh0 + ((hbh0->length + 1) << 3));
3054 * Basic validity checks
3056 if ((hbh0->length + 1) << 3 > clib_net_to_host_u16(ip0->payload_length)) {
3057 error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
3058 next0 = IP_LOOKUP_NEXT_DROP;
3062 /* Scan the set of h-b-h options, process ones that we understand */
3063 error0 = ip6_scan_hbh_options(b0, ip0, hbh0, opt0, limit0, &next0);
3066 /* Has the classifier flagged this buffer for special treatment? */
3067 if ((error0 == 0) && (vnet_buffer(b0)->l2_classify.opaque_index == OI_DECAP))
3068 next0 = hm->next_override;
3070 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) {
3071 ip6_hop_by_hop_trace_t *t = vlib_add_trace(vm, node, b0, sizeof (*t));
3072 u32 trace_len = (hbh0->length + 1) << 3;
3073 t->next_index = next0;
3074 /* Capture the h-b-h option verbatim */
3075 trace_len = trace_len < ARRAY_LEN(t->option_data) ? trace_len : ARRAY_LEN(t->option_data);
3076 t->trace_len = trace_len;
3077 clib_memcpy(t->option_data, hbh0, trace_len);
3080 b0->error = error_node->errors[error0];
3082 /* verify speculative enqueue, maybe switch current next frame */
3083 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0);
3085 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3087 return frame->n_vectors;
3090 VLIB_REGISTER_NODE (ip6_hop_by_hop_node) = {
3091 .function = ip6_hop_by_hop,
3092 .name = "ip6-hop-by-hop",
3093 .sibling_of = "ip6-lookup",
3094 .vector_size = sizeof (u32),
3095 .format_trace = format_ip6_hop_by_hop_trace,
3096 .type = VLIB_NODE_TYPE_INTERNAL,
3097 .n_errors = ARRAY_LEN(ip6_hop_by_hop_error_strings),
3098 .error_strings = ip6_hop_by_hop_error_strings,
3102 VLIB_NODE_FUNCTION_MULTIARCH (ip6_hop_by_hop_node, ip6_hop_by_hop);
3104 static clib_error_t *
3105 ip6_hop_by_hop_init (vlib_main_t * vm)
3107 ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
3108 memset(hm->options, 0, sizeof(hm->options));
3109 memset(hm->trace, 0, sizeof(hm->trace));
3110 hm->next_override = IP6_LOOKUP_NEXT_POP_HOP_BY_HOP;
3114 VLIB_INIT_FUNCTION (ip6_hop_by_hop_init);
3116 void ip6_hbh_set_next_override (uword next)
3118 ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
3120 hm->next_override = next;
3124 ip6_hbh_register_option (u8 option,
3125 int options(vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt),
3126 u8 *trace(u8 *s, ip6_hop_by_hop_option_t *opt))
3128 ip6_main_t * im = &ip6_main;
3129 ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
3131 ASSERT (option < ARRAY_LEN (hm->options));
3133 /* Already registered */
3134 if (hm->options[option])
3137 hm->options[option] = options;
3138 hm->trace[option] = trace;
3140 /* Set global variable */
3141 im->hbh_enabled = 1;
3147 ip6_hbh_unregister_option (u8 option)
3149 ip6_main_t * im = &ip6_main;
3150 ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
3152 ASSERT (option < ARRAY_LEN (hm->options));
3154 /* Not registered */
3155 if (!hm->options[option])
3158 hm->options[option] = NULL;
3159 hm->trace[option] = NULL;
3161 /* Disable global knob if this was the last option configured */
3164 for (i = 0; i < 256; i++) {
3165 if (hm->options[option]) {
3171 im->hbh_enabled = 0;
3176 /* Global IP6 main. */
3177 ip6_main_t ip6_main;
3179 static clib_error_t *
3180 ip6_lookup_init (vlib_main_t * vm)
3182 ip6_main_t * im = &ip6_main;
3183 clib_error_t * error;
3186 for (i = 0; i < ARRAY_LEN (im->fib_masks); i++)
3193 for (j = 0; j < i0; j++)
3194 im->fib_masks[i].as_u32[j] = ~0;
3197 im->fib_masks[i].as_u32[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
3200 ip_lookup_init (&im->lookup_main, /* is_ip6 */ 1);
3202 if (im->lookup_table_nbuckets == 0)
3203 im->lookup_table_nbuckets = IP6_FIB_DEFAULT_HASH_NUM_BUCKETS;
3205 im->lookup_table_nbuckets = 1<< max_log2 (im->lookup_table_nbuckets);
3207 if (im->lookup_table_size == 0)
3208 im->lookup_table_size = IP6_FIB_DEFAULT_HASH_MEMORY_SIZE;
3210 BV(clib_bihash_init) (&im->ip6_lookup_table, "ip6 lookup table",
3211 im->lookup_table_nbuckets,
3212 im->lookup_table_size);
3214 /* Create FIB with index 0 and table id of 0. */
3215 find_ip6_fib_by_table_index_or_id (im, /* table id */ 0, IP6_ROUTE_FLAG_TABLE_ID);
3219 pn = pg_get_node (ip6_lookup_node.index);
3220 pn->unformat_edit = unformat_pg_ip6_header;
3223 /* Unless explicitly configured, don't process HBH options */
3224 im->hbh_enabled = 0;
3227 icmp6_neighbor_solicitation_header_t p;
3229 memset (&p, 0, sizeof (p));
3231 p.ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
3232 p.ip.payload_length = clib_host_to_net_u16 (sizeof (p)
3233 - STRUCT_OFFSET_OF (icmp6_neighbor_solicitation_header_t, neighbor));
3234 p.ip.protocol = IP_PROTOCOL_ICMP6;
3235 p.ip.hop_limit = 255;
3236 ip6_set_solicited_node_multicast_address (&p.ip.dst_address, 0);
3238 p.neighbor.icmp.type = ICMP6_neighbor_solicitation;
3240 p.link_layer_option.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
3241 p.link_layer_option.header.n_data_u64s = sizeof (p.link_layer_option) / sizeof (u64);
3243 vlib_packet_template_init (vm,
3244 &im->discover_neighbor_packet_template,
3246 /* alloc chunk size */ 8,
3247 "ip6 neighbor discovery");
3250 error = ip6_feature_init (vm, im);
3255 VLIB_INIT_FUNCTION (ip6_lookup_init);
3257 static clib_error_t *
3258 add_del_ip6_interface_table (vlib_main_t * vm,
3259 unformat_input_t * input,
3260 vlib_cli_command_t * cmd)
3262 vnet_main_t * vnm = vnet_get_main();
3263 clib_error_t * error = 0;
3264 u32 sw_if_index, table_id;
3268 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3270 error = clib_error_return (0, "unknown interface `%U'",
3271 format_unformat_error, input);
3275 if (unformat (input, "%d", &table_id))
3279 error = clib_error_return (0, "expected table id `%U'",
3280 format_unformat_error, input);
3285 ip6_main_t * im = &ip6_main;
3287 find_ip6_fib_by_table_index_or_id (im, table_id, IP6_ROUTE_FLAG_TABLE_ID);
3291 vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
3292 im->fib_index_by_sw_if_index[sw_if_index] = fib->index;
3300 VLIB_CLI_COMMAND (set_interface_ip6_table_command, static) = {
3301 .path = "set interface ip6 table",
3302 .function = add_del_ip6_interface_table,
3303 .short_help = "set interface ip6 table <intfc> <table-id>"
3307 ip6_link_local_address_from_ethernet_mac_address (ip6_address_t *ip,
3310 ip->as_u64[0] = clib_host_to_net_u64 (0xFE80000000000000ULL);
3311 /* Invert the "u" bit */
3312 ip->as_u8 [8] = mac[0] ^ (1<<1);
3313 ip->as_u8 [9] = mac[1];
3314 ip->as_u8 [10] = mac[2];
3315 ip->as_u8 [11] = 0xFF;
3316 ip->as_u8 [12] = 0xFE;
3317 ip->as_u8 [13] = mac[3];
3318 ip->as_u8 [14] = mac[4];
3319 ip->as_u8 [15] = mac[5];
3323 ip6_ethernet_mac_address_from_link_local_address (u8 *mac,
3326 /* Invert the previously inverted "u" bit */
3327 mac[0] = ip->as_u8 [8] ^ (1<<1);
3328 mac[1] = ip->as_u8 [9];
3329 mac[2] = ip->as_u8 [10];
3330 mac[3] = ip->as_u8 [13];
3331 mac[4] = ip->as_u8 [14];
3332 mac[5] = ip->as_u8 [15];
3335 static clib_error_t *
3336 test_ip6_link_command_fn (vlib_main_t * vm,
3337 unformat_input_t * input,
3338 vlib_cli_command_t * cmd)
3341 ip6_address_t _a, *a = &_a;
3343 if (unformat (input, "%U", unformat_ethernet_address, mac))
3345 ip6_link_local_address_from_ethernet_mac_address (a, mac);
3346 vlib_cli_output (vm, "Link local address: %U",
3347 format_ip6_address, a);
3348 ip6_ethernet_mac_address_from_link_local_address (mac, a);
3349 vlib_cli_output (vm, "Original MAC address: %U",
3350 format_ethernet_address, mac);
3356 VLIB_CLI_COMMAND (test_link_command, static) = {
3357 .path = "test ip6 link",
3358 .function = test_ip6_link_command_fn,
3359 .short_help = "test ip6 link <mac-address>",
3362 int vnet_set_ip6_flow_hash (u32 table_id, u32 flow_hash_config)
3364 ip6_main_t * im6 = &ip6_main;
3366 uword * p = hash_get (im6->fib_index_by_table_id, table_id);
3371 fib = vec_elt_at_index (im6->fibs, p[0]);
3373 fib->flow_hash_config = flow_hash_config;
3377 static clib_error_t *
3378 set_ip6_flow_hash_command_fn (vlib_main_t * vm,
3379 unformat_input_t * input,
3380 vlib_cli_command_t * cmd)
3384 u32 flow_hash_config = 0;
3387 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
3388 if (unformat (input, "table %d", &table_id))
3391 else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;}
3392 foreach_flow_hash_bit
3398 return clib_error_return (0, "unknown input `%U'",
3399 format_unformat_error, input);
3401 rv = vnet_set_ip6_flow_hash (table_id, flow_hash_config);
3408 return clib_error_return (0, "no such FIB table %d", table_id);
3411 clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config);
3418 VLIB_CLI_COMMAND (set_ip6_flow_hash_command, static) = {
3419 .path = "set ip6 flow-hash",
3421 "set ip table flow-hash table <fib-id> src dst sport dport proto reverse",
3422 .function = set_ip6_flow_hash_command_fn,
3425 static clib_error_t *
3426 show_ip6_local_command_fn (vlib_main_t * vm,
3427 unformat_input_t * input,
3428 vlib_cli_command_t * cmd)
3430 ip6_main_t * im = &ip6_main;
3431 ip_lookup_main_t * lm = &im->lookup_main;
3434 vlib_cli_output (vm, "Protocols handled by ip6_local");
3435 for (i = 0; i < ARRAY_LEN(lm->local_next_by_ip_protocol); i++)
3437 if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT)
3438 vlib_cli_output (vm, "%d", i);
3445 VLIB_CLI_COMMAND (show_ip6_local, static) = {
3446 .path = "show ip6 local",
3447 .function = show_ip6_local_command_fn,
3448 .short_help = "Show ip6 local protocol table",
3451 int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
3454 vnet_main_t * vnm = vnet_get_main();
3455 vnet_interface_main_t * im = &vnm->interface_main;
3456 ip6_main_t * ipm = &ip6_main;
3457 ip_lookup_main_t * lm = &ipm->lookup_main;
3458 vnet_classify_main_t * cm = &vnet_classify_main;
3460 if (pool_is_free_index (im->sw_interfaces, sw_if_index))
3461 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
3463 if (table_index != ~0 && pool_is_free_index (cm->tables, table_index))
3464 return VNET_API_ERROR_NO_SUCH_ENTRY;
3466 vec_validate (lm->classify_table_index_by_sw_if_index, sw_if_index);
3467 lm->classify_table_index_by_sw_if_index [sw_if_index] = table_index;
3472 static clib_error_t *
3473 set_ip6_classify_command_fn (vlib_main_t * vm,
3474 unformat_input_t * input,
3475 vlib_cli_command_t * cmd)
3477 u32 table_index = ~0;
3478 int table_index_set = 0;
3479 u32 sw_if_index = ~0;
3482 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
3483 if (unformat (input, "table-index %d", &table_index))
3484 table_index_set = 1;
3485 else if (unformat (input, "intfc %U", unformat_vnet_sw_interface,
3486 vnet_get_main(), &sw_if_index))
3492 if (table_index_set == 0)
3493 return clib_error_return (0, "classify table-index must be specified");
3495 if (sw_if_index == ~0)
3496 return clib_error_return (0, "interface / subif must be specified");
3498 rv = vnet_set_ip6_classify_intfc (vm, sw_if_index, table_index);
3505 case VNET_API_ERROR_NO_MATCHING_INTERFACE:
3506 return clib_error_return (0, "No such interface");
3508 case VNET_API_ERROR_NO_SUCH_ENTRY:
3509 return clib_error_return (0, "No such classifier table");
3514 VLIB_CLI_COMMAND (set_ip6_classify_command, static) = {
3515 .path = "set ip6 classify",
3517 "set ip6 classify intfc <int> table-index <index>",
3518 .function = set_ip6_classify_command_fn,
3521 static clib_error_t *
3522 ip6_config (vlib_main_t * vm, unformat_input_t * input)
3524 ip6_main_t * im = &ip6_main;
3529 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
3530 if (unformat (input, "hash-buckets %d", &tmp))
3532 else if (unformat (input, "heap-size %dm", &tmp))
3533 heapsize = ((u64)tmp) << 20;
3534 else if (unformat (input, "heap-size %dM", &tmp))
3535 heapsize = ((u64)tmp) << 20;
3536 else if (unformat (input, "heap-size %dg", &tmp))
3537 heapsize = ((u64)tmp) << 30;
3538 else if (unformat (input, "heap-size %dG", &tmp))
3539 heapsize = ((u64)tmp) << 30;
3541 return clib_error_return (0, "unknown input '%U'",
3542 format_unformat_error, input);
3545 im->lookup_table_nbuckets = nbuckets;
3546 im->lookup_table_size = heapsize;
3551 VLIB_EARLY_CONFIG_FUNCTION (ip6_config, "ip6");
3556 static clib_error_t *
3557 set_interface_ip6_output_feature_command_fn (vlib_main_t * vm,
3558 unformat_input_t * input,
3559 vlib_cli_command_t * cmd)
3561 vnet_main_t * vnm = vnet_get_main();
3562 u32 sw_if_index = ~0;
3564 ip6_main_t * im = &ip6_main;
3565 ip_lookup_main_t * lm = &im->lookup_main;
3567 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
3569 if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
3571 else if (unformat (input, "del"))
3577 if (sw_if_index == ~0)
3578 return clib_error_return (0, "unknown interface `%U'",
3579 format_unformat_error, input);
3581 lm->tx_sw_if_has_ip_output_features =
3582 clib_bitmap_set (lm->tx_sw_if_has_ip_output_features, sw_if_index, is_add);
3587 VLIB_CLI_COMMAND (set_interface_ip6_output_feature, static) = {
3588 .path = "set interface ip6 output feature",
3589 .function = set_interface_ip6_output_feature_command_fn,
3590 .short_help = "set interface output feature <intfc>",
3592 #endif /* TEST_CODE */