2 * Copyright (c) 2016 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 #include <vnet/lisp-gpe/lisp_gpe.h>
18 /* avoids calling route callbacks for src fib */
20 ip4_sd_fib_set_adj_index (lisp_gpe_main_t * lgm, ip4_fib_t * fib, u32 flags,
21 u32 dst_address_u32, u32 dst_address_length,
24 ip_lookup_main_t * lm = lgm->lm4;
27 if (vec_bytes(fib->old_hash_values))
28 memset (fib->old_hash_values, ~0, vec_bytes (fib->old_hash_values));
29 if (vec_bytes(fib->new_hash_values))
30 memset (fib->new_hash_values, ~0, vec_bytes (fib->new_hash_values));
31 fib->new_hash_values[0] = adj_index;
33 /* Make sure adj index is valid. */
35 (void) ip_get_adjacency (lm, adj_index);
37 hash = fib->adj_index_by_dst_address[dst_address_length];
39 hash = _hash_set3 (hash, dst_address_u32,
41 fib->old_hash_values);
43 fib->adj_index_by_dst_address[dst_address_length] = hash;
46 /* copied from ip4_forward since it's static */
48 ip4_fib_init_adj_index_by_dst_address (ip_lookup_main_t * lm,
55 ASSERT (lm->fib_result_n_bytes >= sizeof (uword));
56 lm->fib_result_n_words = round_pow2 (lm->fib_result_n_bytes, sizeof(uword))
59 fib->adj_index_by_dst_address[address_length] =
60 hash_create (32 /* elts */, lm->fib_result_n_words * sizeof (uword));
62 hash_set_flags (fib->adj_index_by_dst_address[address_length],
63 HASH_FLAG_NO_AUTO_SHRINK);
65 h = hash_header (fib->adj_index_by_dst_address[address_length]);
66 max_index = (hash_value_bytes (h) / sizeof (fib->new_hash_values[0])) - 1;
68 /* Initialize new/old hash value vectors. */
69 vec_validate_init_empty (fib->new_hash_values, max_index, ~0);
70 vec_validate_init_empty (fib->old_hash_values, max_index, ~0);
74 ip4_sd_fib_add_del_src_route (lisp_gpe_main_t * lgm,
75 ip4_add_del_route_args_t * a)
77 ip_lookup_main_t * lm = lgm->lm4;
79 u32 dst_address, dst_address_length, adj_index, old_adj_index;
82 /* Either create new adjacency or use given one depending on arguments. */
84 ip_add_adjacency (lm, a->add_adj, a->n_add_adj, &adj_index);
86 adj_index = a->adj_index;
88 dst_address = a->dst_address.data_u32;
89 dst_address_length = a->dst_address_length;
91 fib = pool_elt_at_index(lgm->ip4_src_fibs, a->table_index_or_table_id);
93 if (! fib->adj_index_by_dst_address[dst_address_length])
94 ip4_fib_init_adj_index_by_dst_address (lm, fib, dst_address_length);
96 hash = fib->adj_index_by_dst_address[dst_address_length];
98 is_del = (a->flags & IP4_ROUTE_FLAG_DEL) != 0;
102 fib->old_hash_values[0] = ~0;
103 hash = _hash_unset (hash, dst_address, fib->old_hash_values);
104 fib->adj_index_by_dst_address[dst_address_length] = hash;
107 ip4_sd_fib_set_adj_index (lgm, fib, a->flags, dst_address,
108 dst_address_length, adj_index);
110 old_adj_index = fib->old_hash_values[0];
112 /* Avoid spurious reference count increments */
113 if (old_adj_index == adj_index
115 && !(a->flags & IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY))
117 ip_adjacency_t * adj = ip_get_adjacency (lm, adj_index);
118 if (adj->share_count > 0)
122 ip4_fib_mtrie_add_del_route (fib, a->dst_address, dst_address_length,
123 is_del ? old_adj_index : adj_index,
126 /* Delete old adjacency index if present and changed. */
127 if (! (a->flags & IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY)
128 && old_adj_index != ~0
129 && old_adj_index != adj_index)
130 ip_del_adjacency (lm, old_adj_index);
134 ip4_sd_get_src_route (lisp_gpe_main_t * lgm, u32 src_fib_index,
135 ip4_address_t * src, u32 address_length)
137 ip4_fib_t * fib = pool_elt_at_index (lgm->ip4_src_fibs, src_fib_index);
140 hash = fib->adj_index_by_dst_address[address_length];
141 p = hash_get (hash, src->as_u32);
145 typedef CLIB_PACKED (struct ip4_route {
146 ip4_address_t address;
147 u32 address_length : 6;
152 ip4_sd_fib_clear_src_fib (lisp_gpe_main_t * lgm, ip4_fib_t * fib)
154 ip4_route_t * routes = 0, * r;
157 vec_reset_length (routes);
159 for (i = 0; i < ARRAY_LEN (fib->adj_index_by_dst_address); i++) {
160 uword * hash = fib->adj_index_by_dst_address[i];
164 x.address_length = i;
166 hash_foreach_pair (p, hash,
168 x.address.data_u32 = p->key;
169 vec_add1 (routes, x);
173 vec_foreach (r, routes) {
174 ip4_add_del_route_args_t a;
176 memset (&a, 0, sizeof (a));
177 a.flags = IP4_ROUTE_FLAG_FIB_INDEX | IP4_ROUTE_FLAG_DEL;
178 a.table_index_or_table_id = fib - lgm->ip4_src_fibs;
179 a.dst_address = r->address;
180 a.dst_address_length = r->address_length;
183 ip4_sd_fib_add_del_src_route (lgm, &a);
188 ip4_fib_is_empty (ip4_fib_t * fib)
194 for (i = ARRAY_LEN (fib->adj_index_by_dst_address) - 1; i >= 0; i--)
196 uword * hash = fib->adj_index_by_dst_address[i];
197 uword n_elts = hash_elts (hash);
208 ip4_sd_fib_add_del_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
209 ip_prefix_t * src_prefix, u32 table_id,
210 ip_adjacency_t * add_adj, u8 is_add)
213 ip4_add_del_route_args_t a;
214 ip_adjacency_t * dst_adjp, dst_adj;
215 ip4_address_t dst = ip_prefix_v4(dst_prefix), src;
216 u32 dst_address_length = ip_prefix_len(dst_prefix), src_address_length = 0;
221 src = ip_prefix_v4(src_prefix);
222 src_address_length = ip_prefix_len(src_prefix);
225 memset(&src, 0, sizeof(src));
228 p = ip4_get_route (lgm->im4, table_id, 0, dst.as_u8, dst_address_length);
232 /* insert dst prefix to ip4 fib, if it's not in yet */
235 /* allocate and init src ip4 fib */
236 pool_get(lgm->ip4_src_fibs, src_fib);
237 ip4_mtrie_init (&src_fib->mtrie);
239 /* configure adjacency */
240 memset(&dst_adj, 0, sizeof(dst_adj));
242 /* reuse rewrite header to store pointer to src fib */
243 dst_adj.rewrite_header.sw_if_index = src_fib - lgm->ip4_src_fibs;
245 /* dst adj should point to lisp gpe lookup */
246 dst_adj.lookup_next_index = lgm->ip4_lookup_next_lgpe_ip4_lookup;
248 /* explicit_fib_index is used in IP6 FIB lookup, don't reuse it */
249 dst_adj.explicit_fib_index = ~0;
252 /* make sure we have different signatures for adj in different tables
253 * but with the same lookup_next_index and for adj in the same table
254 * but associated to different destinations */
255 dst_adj.if_address_index = table_id;
256 dst_adj.indirect.next_hop.ip4 = dst;
258 memset(&a, 0, sizeof(a));
259 a.flags = IP4_ROUTE_FLAG_TABLE_ID;
260 a.table_index_or_table_id = table_id; /* vrf */
262 a.dst_address_length = dst_address_length;
264 a.flags |= IP4_ROUTE_FLAG_ADD;
265 a.add_adj = &dst_adj;
268 ip4_add_del_route (lgm->im4, &a);
270 /* lookup dst adj to obtain the adj index */
271 p = ip4_get_route (lgm->im4, table_id, 0, dst.as_u8,
274 /* make sure insertion succeeded */
278 dst_adjp = ip_get_adjacency (lgm->lm4, p[0]);
279 ASSERT(dst_adjp->rewrite_header.sw_if_index
280 == dst_adj.rewrite_header.sw_if_index);
288 clib_warning("Trying to delete inexistent dst route for %U. Aborting",
289 format_ip4_address_and_length, dst.as_u8,
295 dst_adjp = ip_get_adjacency (lgm->lm4, p[0]);
297 /* add/del src prefix to src fib */
298 memset(&a, 0, sizeof(a));
299 a.flags = IP4_ROUTE_FLAG_TABLE_ID;
300 a.table_index_or_table_id = dst_adjp->rewrite_header.sw_if_index;
302 a.flags |= is_add ? IP4_ROUTE_FLAG_ADD : IP4_ROUTE_FLAG_DEL;
304 a.n_add_adj = is_add ? 1 : 0;
305 /* if src prefix is null, add 0/0 */
306 a.dst_address_length = src_address_length;
308 ip4_sd_fib_add_del_src_route (lgm, &a);
310 /* make sure insertion succeeded */
311 if (CLIB_DEBUG && is_add)
314 ip_adjacency_t * src_adjp;
315 sai = ip4_sd_get_src_route (lgm, dst_adjp->rewrite_header.sw_if_index,
316 &src, src_address_length);
318 src_adjp = ip_get_adjacency(lgm->lm4, sai[0]);
319 ASSERT(src_adjp->if_address_index == add_adj->if_address_index);
322 /* if a delete, check if there are elements left in the src fib */
325 src_fib = pool_elt_at_index(lgm->ip4_src_fibs,
326 dst_adjp->rewrite_header.sw_if_index);
330 /* if there's nothing left */
331 if (ip4_fib_is_empty(src_fib))
333 /* remove the src fib .. */
334 pool_put(lgm->ip4_src_fibs, src_fib);
336 /* .. and remove dst route */
337 memset(&a, 0, sizeof(a));
338 a.flags = IP4_ROUTE_FLAG_TABLE_ID;
339 a.table_index_or_table_id = table_id; /* vrf */
341 a.dst_address_length = dst_address_length;
343 a.flags |= IP4_ROUTE_FLAG_DEL;
345 ip4_add_del_route (lgm->im4, &a);
353 ip4_sd_fib_get_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
354 ip_prefix_t * src_prefix, u32 table_id)
357 ip4_address_t dst = ip_prefix_v4(dst_prefix), src;
358 u32 dst_address_length = ip_prefix_len(dst_prefix), src_address_length = 0;
359 ip_adjacency_t * dst_adj;
363 src = ip_prefix_v4(src_prefix);
364 src_address_length = ip_prefix_len(src_prefix);
367 memset(&src, 0, sizeof(src));
370 p = ip4_get_route (lgm->im4, table_id, 0, dst.as_u8, dst_address_length);
374 dst_adj = ip_get_adjacency (lgm->lm4, p[0]);
375 return ip4_sd_get_src_route (lgm, dst_adj->rewrite_header.sw_if_index, &src,
380 ip6_sd_get_src_route (lisp_gpe_main_t * lgm, u32 src_fib_index,
381 ip6_address_t * src, u32 address_length)
384 BVT(clib_bihash_kv) kv, value;
385 ip6_src_fib_t * fib = pool_elt_at_index (lgm->ip6_src_fibs, src_fib_index);
387 ip6_address_t * mask;
389 ASSERT(address_length <= 128);
391 mask = &fib->fib_masks[address_length];
393 kv.key[0] = src->as_u64[0] & mask->as_u64[0];
394 kv.key[1] = src->as_u64[1] & mask->as_u64[1];
395 kv.key[2] = address_length;
397 rv = BV(clib_bihash_search_inline_2)(&fib->ip6_lookup_table, &kv, &value);
405 compute_prefix_lengths_in_search_order (ip6_src_fib_t * fib)
408 vec_reset_length(fib->prefix_lengths_in_search_order);
409 /* Note: bitmap reversed so this is in fact a longest prefix match */
410 clib_bitmap_foreach(i, fib->non_empty_dst_address_length_bitmap, ({
411 int dst_address_length = 128 - i;
412 vec_add1 (fib->prefix_lengths_in_search_order, dst_address_length);
416 /* Rewrite of ip6_add_del_route() because it uses im6 to find the fib */
418 ip6_sd_fib_add_del_src_route (lisp_gpe_main_t * lgm,
419 ip6_add_del_route_args_t * a)
421 ip_lookup_main_t * lm = lgm->lm6;
423 ip6_address_t dst_address;
424 u32 dst_address_length, adj_index;
426 u32 old_adj_index = ~0;
427 BVT(clib_bihash_kv) kv, value;
429 vlib_smp_unsafe_warning();
431 is_del = (a->flags & IP6_ROUTE_FLAG_DEL) != 0;
433 /* Either create new adjacency or use given one depending on arguments. */
434 if (a->n_add_adj > 0)
436 ip_add_adjacency (lm, a->add_adj, a->n_add_adj, &adj_index);
439 adj_index = a->adj_index;
441 dst_address = a->dst_address;
442 dst_address_length = a->dst_address_length;
443 fib = pool_elt_at_index(lgm->ip6_src_fibs, a->table_index_or_table_id);
445 ASSERT (dst_address_length < ARRAY_LEN (fib->fib_masks));
446 ip6_address_mask (&dst_address, &fib->fib_masks[dst_address_length]);
448 /* refcount accounting */
451 ASSERT(fib->dst_address_length_refcounts[dst_address_length] > 0);
452 if (--fib->dst_address_length_refcounts[dst_address_length] == 0)
454 fib->non_empty_dst_address_length_bitmap = clib_bitmap_set (
455 fib->non_empty_dst_address_length_bitmap,
456 128 - dst_address_length, 0);
457 compute_prefix_lengths_in_search_order (fib);
462 fib->dst_address_length_refcounts[dst_address_length]++;
464 fib->non_empty_dst_address_length_bitmap =
465 clib_bitmap_set (fib->non_empty_dst_address_length_bitmap,
466 128 - dst_address_length, 1);
467 compute_prefix_lengths_in_search_order (fib);
470 kv.key[0] = dst_address.as_u64[0];
471 kv.key[1] = dst_address.as_u64[1];
472 kv.key[2] = dst_address_length;
474 if (BV(clib_bihash_search)(&fib->ip6_lookup_table, &kv, &value) == 0)
475 old_adj_index = value.value;
478 BV(clib_bihash_add_del) (&fib->ip6_lookup_table, &kv, 0 /* is_add */);
481 /* Make sure adj index is valid. */
483 (void) ip_get_adjacency (lm, adj_index);
485 kv.value = adj_index;
487 BV(clib_bihash_add_del) (&fib->ip6_lookup_table, &kv, 1 /* is_add */);
490 /* Avoid spurious reference count increments */
491 if (old_adj_index == adj_index
492 && !(a->flags & IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY))
494 ip_adjacency_t * adj = ip_get_adjacency (lm, adj_index);
495 if (adj->share_count > 0)
499 /* Delete old adjacency index if present and changed. */
501 if (! (a->flags & IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY)
502 && old_adj_index != ~0
503 && old_adj_index != adj_index)
504 ip_del_adjacency (lm, old_adj_index);
509 ip6_src_fib_init (ip6_src_fib_t * fib)
513 for (i = 0; i < ARRAY_LEN (fib->fib_masks); i++)
520 for (j = 0; j < i0; j++)
521 fib->fib_masks[i].as_u32[j] = ~0;
524 fib->fib_masks[i].as_u32[i0] = clib_host_to_net_u32 (
525 pow2_mask (i1) << (32 - i1));
528 if (fib->lookup_table_nbuckets == 0)
529 fib->lookup_table_nbuckets = IP6_FIB_DEFAULT_HASH_NUM_BUCKETS;
531 fib->lookup_table_nbuckets = 1 << max_log2 (fib->lookup_table_nbuckets);
533 if (fib->lookup_table_size == 0)
534 fib->lookup_table_size = IP6_FIB_DEFAULT_HASH_MEMORY_SIZE;
536 BV(clib_bihash_init) (&fib->ip6_lookup_table, "ip6 lookup table",
537 fib->lookup_table_nbuckets,
538 fib->lookup_table_size);
543 ip6_sd_fib_add_del_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
544 ip_prefix_t * src_prefix, u32 table_id,
545 ip_adjacency_t * add_adj, u8 is_add)
548 ip6_add_del_route_args_t a;
549 ip_adjacency_t * dst_adjp, dst_adj;
550 ip6_address_t dst = ip_prefix_v6(dst_prefix), src;
551 u32 dst_address_length = ip_prefix_len(dst_prefix), src_address_length = 0;
552 ip6_src_fib_t * src_fib;
556 src = ip_prefix_v6(src_prefix);
557 src_address_length = ip_prefix_len(src_prefix);
560 memset(&src, 0, sizeof(src));
562 /* lookup dst adj and create it if it doesn't exist */
563 adj_index = ip6_get_route (lgm->im6, table_id, 0, &dst, dst_address_length);
567 /* insert dst prefix to ip6 fib, if it's not in yet */
570 /* allocate and init src ip6 fib */
571 pool_get(lgm->ip6_src_fibs, src_fib);
572 memset(src_fib, 0, sizeof(src_fib[0]));
573 ip6_src_fib_init (src_fib);
575 memset(&dst_adj, 0, sizeof(dst_adj));
577 /* reuse rewrite header to store pointer to src fib */
578 dst_adj.rewrite_header.sw_if_index = src_fib - lgm->ip6_src_fibs;
580 /* dst adj should point to lisp gpe ip lookup */
581 dst_adj.lookup_next_index = lgm->ip6_lookup_next_lgpe_ip6_lookup;
583 /* explicit_fib_index is used in IP6 FIB lookup, don't reuse it */
584 dst_adj.explicit_fib_index = ~0;
587 /* make sure we have different signatures for adj in different tables
588 * but with the same lookup_next_index and for adj in the same table
589 * but associated to different destinations */
590 dst_adj.if_address_index = table_id;
591 dst_adj.indirect.next_hop.ip6 = dst;
593 memset(&a, 0, sizeof(a));
594 a.flags = IP6_ROUTE_FLAG_TABLE_ID;
595 a.table_index_or_table_id = table_id; /* vrf */
597 a.dst_address_length = dst_address_length;
599 a.flags |= IP6_ROUTE_FLAG_ADD;
600 a.add_adj = &dst_adj;
603 ip6_add_del_route (lgm->im6, &a);
605 /* lookup dst adj to obtain the adj index */
606 adj_index = ip6_get_route (lgm->im6, table_id, 0, &dst,
609 /* make sure insertion succeeded */
612 ASSERT(adj_index != 0);
613 dst_adjp = ip_get_adjacency (lgm->lm6, adj_index);
614 ASSERT(dst_adjp->rewrite_header.sw_if_index
615 == dst_adj.rewrite_header.sw_if_index);
623 clib_warning("Trying to delete inexistent dst route for %U. Aborting",
624 format_ip_prefix, dst_prefix);
629 dst_adjp = ip_get_adjacency (lgm->lm6, adj_index);
631 /* add/del src prefix to src fib */
632 memset(&a, 0, sizeof(a));
633 a.flags = IP6_ROUTE_FLAG_TABLE_ID;
634 a.table_index_or_table_id = dst_adjp->rewrite_header.sw_if_index;
636 a.flags |= is_add ? IP6_ROUTE_FLAG_ADD : IP6_ROUTE_FLAG_DEL;
638 a.n_add_adj = is_add ? 1 : 0;
639 /* if src prefix is null, add ::0 */
640 a.dst_address_length = src_address_length;
642 ip6_sd_fib_add_del_src_route (lgm, &a);
644 /* make sure insertion succeeded */
645 if (CLIB_DEBUG && is_add)
648 ip_adjacency_t * src_adjp;
649 sai = ip6_sd_get_src_route (lgm, dst_adjp->rewrite_header.sw_if_index,
650 &src, src_address_length);
652 src_adjp = ip_get_adjacency(lgm->lm6, sai);
653 ASSERT(src_adjp->if_address_index == add_adj->if_address_index);
656 /* if a delete, check if there are elements left in the src fib */
659 src_fib = pool_elt_at_index(lgm->ip6_src_fibs,
660 dst_adjp->rewrite_header.sw_if_index);
664 /* if there's nothing left */
665 if (clib_bitmap_count_set_bits (
666 src_fib->non_empty_dst_address_length_bitmap) == 0)
668 /* remove src fib .. */
669 pool_put(lgm->ip6_src_fibs, src_fib);
671 /* .. and remove dst route */
672 memset(&a, 0, sizeof(a));
673 a.flags = IP6_ROUTE_FLAG_TABLE_ID;
674 a.table_index_or_table_id = table_id; /* vrf */
676 a.dst_address_length = dst_address_length;
678 a.flags |= IP6_ROUTE_FLAG_DEL;
680 ip6_add_del_route (lgm->im6, &a);
688 ip6_sd_fib_get_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
689 ip_prefix_t * src_prefix, u32 table_id)
692 ip6_address_t dst = ip_prefix_v6(dst_prefix), src;
693 u32 dst_address_length = ip_prefix_len(dst_prefix), src_address_length = 0;
694 ip_adjacency_t * dst_adj;
698 src = ip_prefix_v6(src_prefix);
699 src_address_length = ip_prefix_len(src_prefix);
702 memset(&src, 0, sizeof(src));
705 adj_index = ip6_get_route (lgm->im6, table_id, 0, &dst, dst_address_length);
709 dst_adj = ip_get_adjacency (lgm->lm6, adj_index);
710 return ip6_sd_get_src_route (lgm, dst_adj->rewrite_header.sw_if_index, &src,
715 ip_sd_fib_add_del_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
716 ip_prefix_t * src_prefix, u32 table_id,
717 ip_adjacency_t * add_adj, u8 is_add)
720 ip_prefix_version(dst_prefix) == IP4 ?
721 ip4_sd_fib_add_del_route : ip6_sd_fib_add_del_route) (lgm, dst_prefix,
728 ip_sd_fib_get_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
729 ip_prefix_t * src_prefix, u32 table_id)
731 if (ip_prefix_version(dst_prefix) == IP4)
733 u32 * adj_index = ip4_sd_fib_get_route (lgm, dst_prefix, src_prefix,
735 return (adj_index == 0) ? 0 : adj_index[0];
738 return ip6_sd_fib_get_route (lgm, dst_prefix, src_prefix, table_id);
742 ip4_src_fib_lookup_one (lisp_gpe_main_t * lgm, u32 src_fib_index0,
743 ip4_address_t * addr0, u32 * src_adj_index0)
745 ip4_fib_mtrie_leaf_t leaf0, leaf1;
746 ip4_fib_mtrie_t * mtrie0;
748 mtrie0 = &vec_elt_at_index(lgm->ip4_src_fibs, src_fib_index0)->mtrie;
750 leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
751 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 0);
752 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 1);
753 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
754 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
756 /* Handle default route. */
757 leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
758 src_adj_index0[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
762 ip4_src_fib_lookup_two (lisp_gpe_main_t * lgm, u32 src_fib_index0,
763 u32 src_fib_index1, ip4_address_t * addr0,
764 ip4_address_t * addr1, u32 * src_adj_index0,
765 u32 * src_adj_index1)
767 ip4_fib_mtrie_leaf_t leaf0, leaf1;
768 ip4_fib_mtrie_t * mtrie0, * mtrie1;
770 mtrie0 = &vec_elt_at_index(lgm->ip4_src_fibs, src_fib_index0)->mtrie;
771 mtrie1 = &vec_elt_at_index(lgm->ip4_src_fibs, src_fib_index1)->mtrie;
773 leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
775 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 0);
776 leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 0);
778 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 1);
779 leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 1);
781 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
782 leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 2);
784 leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
785 leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 3);
787 /* Handle default route. */
788 leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
789 leaf1 = (leaf1 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie1->default_leaf : leaf1);
790 src_adj_index0[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
791 src_adj_index1[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
795 lgpe_ip4_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
796 vlib_frame_t * from_frame)
798 u32 n_left_from, next_index, * from, * to_next;
799 lisp_gpe_main_t * lgm = &lisp_gpe_main;
801 from = vlib_frame_vector_args (from_frame);
802 n_left_from = from_frame->n_vectors;
804 next_index = node->cached_next_index;
806 while (n_left_from > 0)
810 vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
812 while (n_left_from >= 4 && n_left_to_next >= 2)
815 vlib_buffer_t * b0, * b1;
816 ip4_header_t * ip0, * ip1;
817 u32 dst_adj_index0, src_adj_index0, src_fib_index0, dst_adj_index1,
818 src_adj_index1, src_fib_index1;
819 ip_adjacency_t * dst_adj0, * src_adj0, * dst_adj1, * src_adj1;
822 next0 = next1 = LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP;
824 /* Prefetch next iteration. */
826 vlib_buffer_t * p2, * p3;
828 p2 = vlib_get_buffer (vm, from[2]);
829 p3 = vlib_get_buffer (vm, from[3]);
831 vlib_prefetch_buffer_header (p2, LOAD);
832 vlib_prefetch_buffer_header (p3, LOAD);
834 CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
835 CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
847 b0 = vlib_get_buffer (vm, bi0);
848 b1 = vlib_get_buffer (vm, bi1);
850 ip0 = vlib_buffer_get_current (b0);
851 ip1 = vlib_buffer_get_current (b1);
853 /* dst lookup was done by ip4 lookup */
854 dst_adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
855 dst_adj_index1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
857 dst_adj0 = ip_get_adjacency (lgm->lm4, dst_adj_index0);
858 dst_adj1 = ip_get_adjacency (lgm->lm4, dst_adj_index1);
860 src_fib_index0 = dst_adj0->rewrite_header.sw_if_index;
861 src_fib_index1 = dst_adj1->rewrite_header.sw_if_index;
863 /* if default route not hit in ip4 lookup */
864 if (PREDICT_TRUE(src_fib_index0 != (u32) ~0
865 && src_fib_index1 != (u32) ~0))
867 ip4_src_fib_lookup_two (lgm, src_fib_index0, src_fib_index1,
868 &ip0->src_address, &ip1->src_address,
869 &src_adj_index0, &src_adj_index1);
871 vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
872 vnet_buffer(b1)->ip.adj_index[VLIB_TX] = src_adj_index1;
874 src_adj0 = ip_get_adjacency (lgm->lm4, src_adj_index0);
875 src_adj1 = ip_get_adjacency (lgm->lm4, src_adj_index1);
877 next0 = src_adj0->explicit_fib_index;
878 next1 = src_adj1->explicit_fib_index;
880 /* prepare buffer for lisp-gpe output node */
881 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
882 src_adj0->rewrite_header.sw_if_index;
883 vnet_buffer (b1)->sw_if_index[VLIB_TX] =
884 src_adj1->rewrite_header.sw_if_index;
888 if (src_fib_index0 != (u32) ~0)
890 ip4_src_fib_lookup_one (lgm, src_fib_index0,
891 &ip0->src_address, &src_adj_index0);
892 vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
893 src_adj0 = ip_get_adjacency (lgm->lm4, src_adj_index0);
894 next0 = src_adj0->explicit_fib_index;
895 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
896 src_adj0->rewrite_header.sw_if_index;
898 if (src_fib_index1 != (u32) ~0)
900 ip4_src_fib_lookup_one (lgm, src_fib_index1,
901 &ip1->src_address, &src_adj_index1);
902 vnet_buffer(b1)->ip.adj_index[VLIB_TX] = src_adj_index1;
903 src_adj1 = ip_get_adjacency (lgm->lm4, src_adj_index1);
904 next1 = src_adj1->explicit_fib_index;
905 vnet_buffer (b1)->sw_if_index[VLIB_TX] =
906 src_adj1->rewrite_header.sw_if_index;
910 vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
911 n_left_to_next, bi0, bi1, next0,
915 while (n_left_from > 0 && n_left_to_next > 0)
919 u32 bi0, dst_adj_index0, src_adj_index0, src_fib_index0;
920 u32 next0 = LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP;
921 ip_adjacency_t * dst_adj0, * src_adj0;
930 b0 = vlib_get_buffer (vm, bi0);
931 ip0 = vlib_buffer_get_current (b0);
933 /* dst lookup was done by ip4 lookup */
934 dst_adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
935 dst_adj0 = ip_get_adjacency (lgm->lm4, dst_adj_index0);
936 src_fib_index0 = dst_adj0->rewrite_header.sw_if_index;
938 /* if default route not hit in ip4 lookup */
939 if (PREDICT_TRUE(src_fib_index0 != (u32 ) ~0))
942 ip4_src_fib_lookup_one (lgm, src_fib_index0, &ip0->src_address,
944 vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
945 src_adj0 = ip_get_adjacency (lgm->lm4, src_adj_index0);
946 next0 = src_adj0->explicit_fib_index;
948 /* prepare packet for lisp-gpe output node */
949 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
950 src_adj0->rewrite_header.sw_if_index;
953 vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
954 n_left_to_next, bi0, next0);
956 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
958 return from_frame->n_vectors;
961 VLIB_REGISTER_NODE (lgpe_ip4_lookup_node) = {
962 .function = lgpe_ip4_lookup,
963 .name = "lgpe-ip4-lookup",
964 .vector_size = sizeof (u32),
966 .type = VLIB_NODE_TYPE_INTERNAL,
968 .n_next_nodes = LGPE_IP4_LOOKUP_N_NEXT,
970 #define _(sym,str) [LGPE_IP4_LOOKUP_NEXT_##sym] = str,
971 foreach_lgpe_ip4_lookup_next
977 ip6_src_fib_lookup (lisp_gpe_main_t * lgm, u32 src_fib_index,
982 BVT(clib_bihash_kv) kv, value;
983 ip6_src_fib_t * fib = pool_elt_at_index (lgm->ip6_src_fibs, src_fib_index);
985 len = vec_len (fib->prefix_lengths_in_search_order);
987 for (i = 0; i < len; i++)
989 int dst_address_length = fib->prefix_lengths_in_search_order[i];
990 ip6_address_t * mask;
992 ASSERT(dst_address_length >= 0 && dst_address_length <= 128);
994 mask = &fib->fib_masks[dst_address_length];
996 kv.key[0] = src->as_u64[0] & mask->as_u64[0];
997 kv.key[1] = src->as_u64[1] & mask->as_u64[1];
998 kv.key[2] = dst_address_length;
1000 rv = BV(clib_bihash_search_inline_2)(&fib->ip6_lookup_table, &kv, &value);
1009 lgpe_ip6_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
1010 vlib_frame_t * from_frame)
1012 u32 n_left_from, next_index, * from, * to_next;
1013 lisp_gpe_main_t * lgm = &lisp_gpe_main;
1015 from = vlib_frame_vector_args (from_frame);
1016 n_left_from = from_frame->n_vectors;
1018 next_index = node->cached_next_index;
1020 while (n_left_from > 0)
1024 vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
1026 while (n_left_from >= 4 && n_left_to_next >= 2)
1029 vlib_buffer_t * b0, * b1;
1030 ip6_header_t * ip0, * ip1;
1031 u32 dst_adj_index0, src_adj_index0, src_fib_index0, dst_adj_index1,
1032 src_adj_index1, src_fib_index1;
1033 ip_adjacency_t * dst_adj0, * src_adj0, * dst_adj1, * src_adj1;
1036 next0 = next1 = LGPE_IP6_LOOKUP_NEXT_LISP_CP_LOOKUP;
1038 /* Prefetch next iteration. */
1040 vlib_buffer_t * p2, * p3;
1042 p2 = vlib_get_buffer (vm, from[2]);
1043 p3 = vlib_get_buffer (vm, from[3]);
1045 vlib_prefetch_buffer_header (p2, LOAD);
1046 vlib_prefetch_buffer_header (p3, LOAD);
1048 CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
1049 CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
1058 n_left_to_next -= 2;
1061 b0 = vlib_get_buffer (vm, bi0);
1062 b1 = vlib_get_buffer (vm, bi1);
1064 ip0 = vlib_buffer_get_current (b0);
1065 ip1 = vlib_buffer_get_current (b1);
1067 /* dst lookup was done by ip6 lookup */
1068 dst_adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
1069 dst_adj_index1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
1071 dst_adj0 = ip_get_adjacency (lgm->lm6, dst_adj_index0);
1072 dst_adj1 = ip_get_adjacency (lgm->lm6, dst_adj_index1);
1074 src_fib_index0 = dst_adj0->rewrite_header.sw_if_index;
1075 src_fib_index1 = dst_adj1->rewrite_header.sw_if_index;
1077 /* if default route not hit in ip6 lookup */
1078 if (PREDICT_TRUE(src_fib_index0 != (u32) ~0
1079 && src_fib_index1 != (u32) ~0))
1082 src_adj_index0 = ip6_src_fib_lookup (lgm, src_fib_index0,
1084 src_adj_index1 = ip6_src_fib_lookup (lgm, src_fib_index1,
1087 vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
1088 vnet_buffer(b1)->ip.adj_index[VLIB_TX] = src_adj_index1;
1090 src_adj0 = ip_get_adjacency (lgm->lm6, src_adj_index0);
1091 src_adj1 = ip_get_adjacency (lgm->lm6, src_adj_index1);
1093 next0 = src_adj0->explicit_fib_index;
1094 next1 = src_adj1->explicit_fib_index;
1096 /* prepare buffer for lisp-gpe output node */
1097 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
1098 src_adj0->rewrite_header.sw_if_index;
1099 vnet_buffer (b1)->sw_if_index[VLIB_TX] =
1100 src_adj1->rewrite_header.sw_if_index;
1104 if (src_fib_index0 != (u32) ~0)
1106 src_adj_index0 = ip6_src_fib_lookup (lgm, src_fib_index0,
1108 vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
1109 src_adj0 = ip_get_adjacency (lgm->lm6, src_adj_index0);
1110 next0 = src_adj0->explicit_fib_index;
1111 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
1112 src_adj0->rewrite_header.sw_if_index;
1114 if (src_fib_index1 != (u32) ~0)
1116 src_adj_index1 = ip6_src_fib_lookup (lgm, src_fib_index1,
1118 vnet_buffer(b1)->ip.adj_index[VLIB_TX] = src_adj_index1;
1119 src_adj1 = ip_get_adjacency (lgm->lm6, src_adj_index1);
1120 next1 = src_adj1->explicit_fib_index;
1121 vnet_buffer (b1)->sw_if_index[VLIB_TX] =
1122 src_adj1->rewrite_header.sw_if_index;
1126 vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
1127 n_left_to_next, bi0, bi1, next0,
1131 while (n_left_from > 0 && n_left_to_next > 0)
1135 u32 bi0, dst_adj_index0, src_adj_index0, src_fib_index0;
1136 u32 next0 = LGPE_IP6_LOOKUP_NEXT_LISP_CP_LOOKUP;
1137 ip_adjacency_t * dst_adj0, * src_adj0;
1144 n_left_to_next -= 1;
1146 b0 = vlib_get_buffer (vm, bi0);
1147 ip0 = vlib_buffer_get_current (b0);
1149 /* dst lookup was done by ip6 lookup */
1150 dst_adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
1151 dst_adj0 = ip_get_adjacency (lgm->lm6, dst_adj_index0);
1152 src_fib_index0 = dst_adj0->rewrite_header.sw_if_index;
1154 /* if default route not hit in ip6 lookup */
1155 if (PREDICT_TRUE(src_fib_index0 != (u32 ) ~0))
1158 src_adj_index0 = ip6_src_fib_lookup (lgm, src_fib_index0,
1161 vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
1162 src_adj0 = ip_get_adjacency (lgm->lm6, src_adj_index0);
1163 next0 = src_adj0->explicit_fib_index;
1165 /* prepare packet for lisp-gpe output node */
1166 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
1167 src_adj0->rewrite_header.sw_if_index;
1170 vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
1171 n_left_to_next, bi0, next0);
1173 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1175 return from_frame->n_vectors;
1178 VLIB_REGISTER_NODE (lgpe_ip6_lookup_node) = {
1179 .function = lgpe_ip6_lookup,
1180 .name = "lgpe-ip6-lookup",
1181 .vector_size = sizeof (u32),
1183 .type = VLIB_NODE_TYPE_INTERNAL,
1185 .n_next_nodes = LGPE_IP6_LOOKUP_N_NEXT,
1187 #define _(sym,str) [LGPE_IP6_LOOKUP_NEXT_##sym] = str,
1188 foreach_lgpe_ip6_lookup_next