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.
17 #include <vnet/plugin/plugin.h>
18 #include <vnet/ip/lookup.h>
19 #include <vnet/dpo/dpo.h>
20 #include <vnet/fib/fib_table.h>
21 #include <vpp/app/version.h>
23 static ila_main_t ila_main;
25 #define ILA_TABLE_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
26 #define ILA_TABLE_DEFAULT_HASH_MEMORY_SIZE (32<<20)
28 #define foreach_ila_error \
29 _(NONE, "valid ILA packets")
32 #define _(sym,str) ILA_ERROR_##sym,
38 static char *ila_error_strings[] = {
39 #define _(sym,string) string,
45 ILA_ILA2SIR_NEXT_DROP,
51 ip6_address_t initial_dst;
53 } ila_ila2sir_trace_t;
55 static ila_entry_t ila_sir2ila_default_entry = {
56 .csum_mode = ILA_CSUM_MODE_NO_ACTION,
58 .dir = ILA_DIR_ILA2SIR, //Will pass the packet with no
62 * @brief Dynamically registered DPO Type for ILA
64 static dpo_type_t ila_dpo_type;
67 * @brief Dynamically registered FIB node type for ILA
69 static fib_node_type_t ila_fib_node_type;
72 * FIB source for adding entries
74 static fib_source_t ila_fib_src;
77 format_half_ip6_address (u8 * s, va_list * va)
79 u64 v = clib_net_to_host_u64 (va_arg (*va, u64));
81 return format (s, "%04x:%04x:%04x:%04x",
82 v >> 48, (v >> 32) & 0xffff, (v >> 16) & 0xffff, v & 0xffff);
87 format_ila_direction (u8 * s, va_list * args)
89 ila_direction_t t = va_arg (*args, ila_direction_t);
91 if (t == ILA_DIR_##i) \
95 return format (s, "invalid_ila_direction");
99 format_csum_mode (u8 * s, va_list * va)
101 ila_csum_mode_t csum_mode = va_arg (*va, ila_csum_mode_t);
107 case ILA_CSUM_MODE_##i: \
110 ila_csum_foreach_type
113 txt = "invalid_ila_csum_mode";
116 return format (s, txt);
120 format_ila_type (u8 * s, va_list * args)
122 ila_type_t t = va_arg (*args, ila_type_t);
124 if (t == ILA_TYPE_##i) \
125 return format(s, st);
128 return format (s, "invalid_ila_type");
132 format_ila_entry (u8 * s, va_list * va)
134 vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
135 ila_entry_t *e = va_arg (*va, ila_entry_t *);
139 return format (s, "%-15s%=40s%=40s%+16s%+18s%+11s", "Type", "SIR Address",
140 "ILA Address", "Checksum Mode", "Direction", "Next DPO");
144 if (ip6_address_is_zero(&e->next_hop))
146 return format (s, "%-15U%=40U%=40U%18U%11U%s",
147 format_ila_type, e->type,
148 format_ip6_address, &e->sir_address,
149 format_ip6_address, &e->ila_address,
150 format_csum_mode, e->csum_mode,
151 format_ila_direction, e->dir,
156 return format (s, "%-15U%=40U%=40U%18U%11U%U",
157 format_ila_type, e->type,
158 format_ip6_address, &e->sir_address,
159 format_ip6_address, &e->ila_address,
160 format_csum_mode, e->csum_mode,
161 format_ila_direction, e->dir,
162 format_dpo_id, &e->ila_dpo, 0);
170 format_ila_ila2sir_trace (u8 * s, va_list * args)
172 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
173 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
174 ila_ila2sir_trace_t *t = va_arg (*args, ila_ila2sir_trace_t *);
176 "ILA -> SIR adj index: %d entry index: %d initial_dst: %U",
177 t->adj_index, t->ila_index, format_ip6_address,
182 unformat_ila_direction (unformat_input_t * input, va_list * args)
184 ila_direction_t *result = va_arg (*args, ila_direction_t *);
186 if (unformat(input, s)) \
188 *result = ILA_DIR_##i; \
192 ila_foreach_direction
198 unformat_ila_type (unformat_input_t * input, va_list * args)
200 ila_type_t *result = va_arg (*args, ila_type_t *);
202 if (unformat(input, s)) \
204 *result = ILA_TYPE_##i; \
214 unformat_ila_csum_mode (unformat_input_t * input, va_list * args)
216 ila_csum_mode_t *result = va_arg (*args, ila_csum_mode_t *);
217 if (unformat (input, "none") || unformat (input, "no-action"))
219 *result = ILA_CSUM_MODE_NO_ACTION;
222 if (unformat (input, "neutral-map"))
224 *result = ILA_CSUM_MODE_NEUTRAL_MAP;
227 if (unformat (input, "adjust-transport"))
229 *result = ILA_CSUM_MODE_ADJUST_TRANSPORT;
236 unformat_half_ip6_address (unformat_input_t * input, va_list * args)
238 u64 *result = va_arg (*args, u64 *);
241 if (!unformat (input, "%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3]))
244 if (a[0] > 0xFFFF || a[1] > 0xFFFF || a[2] > 0xFFFF || a[3] > 0xFFFF)
247 *result = clib_host_to_net_u64 ((((u64) a[0]) << 48) |
248 (((u64) a[1]) << 32) |
249 (((u64) a[2]) << 16) | (((u64) a[3])));
254 static vlib_node_registration_t ila_ila2sir_node;
257 ila_ila2sir (vlib_main_t * vm,
258 vlib_node_runtime_t * node, vlib_frame_t * frame)
260 u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
261 ila_main_t *ilm = &ila_main;
263 from = vlib_frame_vector_args (frame);
264 n_left_from = frame->n_vectors;
265 next_index = node->cached_next_index;
267 while (n_left_from > 0)
269 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
271 while (n_left_from >= 4 && n_left_to_next >= 2)
274 vlib_buffer_t *p0, *p1;
275 ila_entry_t *ie0, *ie1;
276 ip6_header_t *ip60, *ip61;
277 ip6_address_t *sir_address0, *sir_address1;
280 vlib_buffer_t *p2, *p3;
282 p2 = vlib_get_buffer (vm, from[2]);
283 p3 = vlib_get_buffer (vm, from[3]);
285 vlib_prefetch_buffer_header (p2, LOAD);
286 vlib_prefetch_buffer_header (p3, LOAD);
287 CLIB_PREFETCH (p2->data, sizeof (ip6_header_t), LOAD);
288 CLIB_PREFETCH (p3->data, sizeof (ip6_header_t), LOAD);
291 pi0 = to_next[0] = from[0];
292 pi1 = to_next[1] = from[1];
298 p0 = vlib_get_buffer (vm, pi0);
299 p1 = vlib_get_buffer (vm, pi1);
300 ip60 = vlib_buffer_get_current (p0);
301 ip61 = vlib_buffer_get_current (p1);
302 sir_address0 = &ip60->dst_address;
303 sir_address1 = &ip61->dst_address;
304 ie0 = pool_elt_at_index (ilm->entries,
305 vnet_buffer (p0)->ip.adj_index[VLIB_TX]);
306 ie1 = pool_elt_at_index (ilm->entries,
307 vnet_buffer (p1)->ip.adj_index[VLIB_TX]);
309 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
311 ila_ila2sir_trace_t *tr =
312 vlib_add_trace (vm, node, p0, sizeof (*tr));
313 tr->ila_index = ie0 - ilm->entries;
314 tr->initial_dst = ip60->dst_address;
315 tr->adj_index = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
318 if (PREDICT_FALSE (p1->flags & VLIB_BUFFER_IS_TRACED))
320 ila_ila2sir_trace_t *tr =
321 vlib_add_trace (vm, node, p1, sizeof (*tr));
322 tr->ila_index = ie1 - ilm->entries;
323 tr->initial_dst = ip61->dst_address;
324 tr->adj_index = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
327 sir_address0 = (ie0->dir != ILA_DIR_SIR2ILA) ? &ie0->sir_address : sir_address0;
328 sir_address1 = (ie1->dir != ILA_DIR_SIR2ILA) ? &ie1->sir_address : sir_address1;
329 ip60->dst_address.as_u64[0] = sir_address0->as_u64[0];
330 ip60->dst_address.as_u64[1] = sir_address0->as_u64[1];
331 ip61->dst_address.as_u64[0] = sir_address1->as_u64[0];
332 ip61->dst_address.as_u64[1] = sir_address1->as_u64[1];
334 vnet_buffer (p0)->ip.adj_index[VLIB_TX] = ie0->ila_dpo.dpoi_index;
335 vnet_buffer (p1)->ip.adj_index[VLIB_TX] = ie1->ila_dpo.dpoi_index;
337 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
338 n_left_to_next, pi0, pi1,
339 ie0->ila_dpo.dpoi_next_node,
340 ie1->ila_dpo.dpoi_next_node);
344 while (n_left_from > 0 && n_left_to_next > 0)
350 ip6_address_t *sir_address0;
352 pi0 = to_next[0] = from[0];
358 p0 = vlib_get_buffer (vm, pi0);
359 ip60 = vlib_buffer_get_current (p0);
360 sir_address0 = &ip60->dst_address;
361 ie0 = pool_elt_at_index (ilm->entries,
362 vnet_buffer (p0)->ip.adj_index[VLIB_TX]);
364 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
366 ila_ila2sir_trace_t *tr =
367 vlib_add_trace (vm, node, p0, sizeof (*tr));
368 tr->ila_index = ie0 - ilm->entries;
369 tr->initial_dst = ip60->dst_address;
370 tr->adj_index = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
373 sir_address0 = (ie0->dir != ILA_DIR_SIR2ILA) ? &ie0->sir_address : sir_address0;
374 ip60->dst_address.as_u64[0] = sir_address0->as_u64[0];
375 ip60->dst_address.as_u64[1] = sir_address0->as_u64[1];
376 vnet_buffer (p0)->ip.adj_index[VLIB_TX] = ie0->ila_dpo.dpoi_index;
378 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
380 ie0->ila_dpo.dpoi_next_node);
382 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
385 return frame->n_vectors;
388 VLIB_REGISTER_NODE (ila_ila2sir_node, static) =
390 .function = ila_ila2sir,
391 .name = "ila-to-sir",
392 .vector_size = sizeof (u32),
393 .format_trace = format_ila_ila2sir_trace,
394 .n_errors = ILA_N_ERROR,
395 .error_strings = ila_error_strings,
396 .n_next_nodes = ILA_ILA2SIR_N_NEXT,
399 [ILA_ILA2SIR_NEXT_DROP] = "error-drop"
405 ILA_SIR2ILA_NEXT_DROP,
407 } ila_sir2ila_next_t;
412 ip6_address_t initial_dst;
413 } ila_sir2ila_trace_t;
416 format_ila_sir2ila_trace (u8 * s, va_list * args)
418 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
419 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
420 ila_sir2ila_trace_t *t = va_arg (*args, ila_sir2ila_trace_t *);
422 return format (s, "SIR -> ILA entry index: %d initial_dst: %U",
423 t->ila_index, format_ip6_address, &t->initial_dst);
426 static vlib_node_registration_t ila_sir2ila_node;
429 ila_sir2ila (vlib_main_t * vm,
430 vlib_node_runtime_t * node, vlib_frame_t * frame)
432 u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
433 ila_main_t *ilm = &ila_main;
435 from = vlib_frame_vector_args (frame);
436 n_left_from = frame->n_vectors;
437 next_index = node->cached_next_index;
439 while (n_left_from > 0)
441 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
443 while (n_left_from >= 4 && n_left_to_next >= 2)
446 vlib_buffer_t *p0, *p1;
447 ip6_header_t *ip60, *ip61;
448 u32 next0 = ILA_SIR2ILA_NEXT_DROP;
449 u32 next1 = ILA_SIR2ILA_NEXT_DROP;
450 BVT (clib_bihash_kv) kv0, value0;
451 BVT (clib_bihash_kv) kv1, value1;
452 ila_entry_t *ie0 = &ila_sir2ila_default_entry;
453 ila_entry_t *ie1 = &ila_sir2ila_default_entry;
454 ip6_address_t *ila_address0, *ila_address1;
457 vlib_buffer_t *p2, *p3;
459 p2 = vlib_get_buffer (vm, from[2]);
460 p3 = vlib_get_buffer (vm, from[3]);
462 vlib_prefetch_buffer_header (p2, LOAD);
463 vlib_prefetch_buffer_header (p3, LOAD);
464 CLIB_PREFETCH (p2->data, sizeof (ip6_header_t), LOAD);
465 CLIB_PREFETCH (p3->data, sizeof (ip6_header_t), LOAD);
468 pi0 = to_next[0] = from[0];
469 pi1 = to_next[1] = from[1];
475 p0 = vlib_get_buffer (vm, pi0);
476 p1 = vlib_get_buffer (vm, pi1);
477 ip60 = vlib_buffer_get_current (p0);
478 ip61 = vlib_buffer_get_current (p1);
479 ila_address0 = &ip60->dst_address;
480 ila_address1 = &ip61->dst_address;
481 kv0.key[0] = ip60->dst_address.as_u64[0];
482 kv0.key[1] = ip60->dst_address.as_u64[1];
484 kv1.key[0] = ip61->dst_address.as_u64[0];
485 kv1.key[1] = ip61->dst_address.as_u64[1];
488 if (PREDICT_TRUE((BV (clib_bihash_search)
489 (&ilm->id_to_entry_table, &kv0, &value0)) == 0)) {
490 ie0 = &ilm->entries[value0.value];
491 ila_address0 = (ie0->dir != ILA_DIR_ILA2SIR) ? &ie0->ila_address : ila_address0;
494 if ((BV (clib_bihash_search)
495 (&ilm->id_to_entry_table, &kv1, &value1)) == 0) {
496 ie1 = &ilm->entries[value1.value];
497 ila_address1 = (ie1->dir != ILA_DIR_ILA2SIR) ? &ie1->ila_address : ila_address1;
500 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
502 ila_sir2ila_trace_t *tr =
503 vlib_add_trace (vm, node, p0, sizeof (*tr));
505 (ie0 != &ila_sir2ila_default_entry) ? (ie0 - ilm->entries) : ~0;
506 tr->initial_dst = ip60->dst_address;
509 if (PREDICT_FALSE (p1->flags & VLIB_BUFFER_IS_TRACED))
511 ila_sir2ila_trace_t *tr =
512 vlib_add_trace (vm, node, p1, sizeof (*tr));
514 (ie1 != &ila_sir2ila_default_entry) ? (ie1 - ilm->entries) : ~0;
515 tr->initial_dst = ip61->dst_address;
518 ip60->dst_address.as_u64[0] = ila_address0->as_u64[0];
519 ip60->dst_address.as_u64[1] = ila_address0->as_u64[1];
520 ip61->dst_address.as_u64[0] = ila_address1->as_u64[0];
521 ip61->dst_address.as_u64[1] = ila_address1->as_u64[1];
523 vnet_feature_next (&next0, p0);
524 vnet_feature_next (&next1, p1);
526 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
527 n_left_to_next, pi0, pi1, next0,
532 while (n_left_from > 0 && n_left_to_next > 0)
537 u32 next0 = ILA_SIR2ILA_NEXT_DROP;
538 BVT (clib_bihash_kv) kv0, value0;
539 ila_entry_t *ie0 = &ila_sir2ila_default_entry;
540 ip6_address_t *ila_address0;
542 pi0 = to_next[0] = from[0];
548 p0 = vlib_get_buffer (vm, pi0);
549 ip60 = vlib_buffer_get_current (p0);
550 ila_address0 = &ip60->dst_address;
552 kv0.key[0] = ip60->dst_address.as_u64[0];
553 kv0.key[1] = ip60->dst_address.as_u64[1];
556 if (PREDICT_TRUE((BV (clib_bihash_search)
557 (&ilm->id_to_entry_table, &kv0, &value0)) == 0)) {
558 ie0 = &ilm->entries[value0.value];
559 ila_address0 = (ie0->dir != ILA_DIR_ILA2SIR) ? &ie0->ila_address : ila_address0;
562 if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
564 ila_sir2ila_trace_t *tr =
565 vlib_add_trace (vm, node, p0, sizeof (*tr));
567 (ie0 != &ila_sir2ila_default_entry) ? (ie0 - ilm->entries) : ~0;
568 tr->initial_dst = ip60->dst_address;
571 //This operation should do everything for any type (except vnid4 obviously)
572 ip60->dst_address.as_u64[0] = ila_address0->as_u64[0];
573 ip60->dst_address.as_u64[1] = ila_address0->as_u64[1];
575 vnet_feature_next (&next0, p0);
577 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
578 n_left_to_next, pi0, next0);
580 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
583 return frame->n_vectors;
586 VLIB_REGISTER_NODE (ila_sir2ila_node, static) =
588 .function = ila_sir2ila,.name = "sir-to-ila",
589 .vector_size = sizeof (u32),
590 .format_trace = format_ila_sir2ila_trace,
591 .n_errors = ILA_N_ERROR,
592 .error_strings = ila_error_strings,
593 .n_next_nodes = ILA_SIR2ILA_N_NEXT,
596 [ILA_SIR2ILA_NEXT_DROP] = "error-drop"
600 VNET_FEATURE_INIT (ila_sir2ila, static) =
602 .arc_name = "ip6-unicast",
603 .node_name = "sir-to-ila",
604 .runs_before = VNET_FEATURES ("ip6-lookup"),
608 ila_entry_stack (ila_entry_t *ie)
611 * restack on the next-hop's FIB entry
613 dpo_stack(ila_dpo_type,
616 fib_entry_contribute_ip_forwarding(
617 ie->next_hop_fib_entry_index));
621 ila_add_del_entry (ila_add_del_entry_args_t * args)
623 ila_main_t *ilm = &ila_main;
624 BVT (clib_bihash_kv) kv, value;
627 if (args->type == ILA_TYPE_IID || args->type == ILA_TYPE_LUID)
629 if ((args->sir_address.as_u8[8] >> 5) != args->type)
631 clib_warning ("Incorrect SIR address (ILA type mismatch %d %d)",
632 args->sir_address.as_u8[8] >> 1, args->type);
635 if (args->sir_address.as_u8[8] & 0x10)
637 clib_warning ("Checksum bit should not be set in SIR address");
641 else if (args->type == ILA_TYPE_VNIDM)
643 if (args->sir_address.as_u8[0] != 0xff ||
644 (args->sir_address.as_u8[1] & 0xf0) != 0xf0)
646 clib_warning ("SIR multicast address must start with fff");
649 if (args->sir_address.as_u16[1] || args->sir_address.as_u16[2] ||
650 args->sir_address.as_u16[3] || args->sir_address.as_u16[4] ||
651 args->sir_address.as_u16[5] || (args->sir_address.as_u8[12] & 0xf0))
653 clib_warning ("SIR multicast address must start with fff");
661 pool_get (ilm->entries, e);
662 e->type = args->type;
663 e->sir_address = args->sir_address;
664 e->next_hop = args->next_hop_address;
665 e->csum_mode = args->csum_mode;
668 //Construct ILA address
672 e->ila_address = e->sir_address;
675 e->ila_address.as_u64[0] = args->locator;
676 e->ila_address.as_u64[1] = args->sir_address.as_u64[1];
679 e->ila_address.as_u64[0] = args->locator;
680 e->ila_address.as_u8[8] = (ILA_TYPE_VNID6 << 1);
681 e->ila_address.as_u32[2] |= args->vnid;
682 e->ila_address.as_u32[3] = args->sir_address.as_u32[3];
685 e->ila_address.as_u64[0] = args->locator;
686 e->ila_address.as_u8[8] = (ILA_TYPE_VNIDM << 1);
687 e->ila_address.as_u32[2] |= args->vnid;
688 e->ila_address.as_u32[3] = args->sir_address.as_u32[3];
689 e->ila_address.as_u8[12] |= args->sir_address.as_u8[2] << 4;
692 clib_warning ("ILA type '%U' is not supported", format_ila_type,
697 //Modify ILA checksum if necessary
698 if (e->csum_mode == ILA_CSUM_MODE_NEUTRAL_MAP)
700 ip_csum_t csum = e->ila_address.as_u16[7];
702 for (i = 0; i < 4; i++)
704 csum = ip_csum_sub_even (csum, e->sir_address.as_u32[i]);
705 csum = ip_csum_add_even (csum, e->ila_address.as_u32[i]);
707 csum = ip_csum_add_even (csum, clib_host_to_net_u16 (0x1000));
708 e->ila_address.as_u16[7] = ip_csum_fold (csum);
709 e->ila_address.as_u8[8] |= 0x10;
712 //Create entry with the sir address
713 kv.key[0] = e->sir_address.as_u64[0];
714 kv.key[1] = e->sir_address.as_u64[1];
716 kv.value = e - ilm->entries;
717 BV (clib_bihash_add_del) (&ilm->id_to_entry_table, &kv,
720 if (!ip6_address_is_zero(&e->next_hop))
723 * become a child of the FIB netry for the next-hop
724 * so we are informed when its forwarding changes
726 fib_prefix_t next_hop = {
731 .fp_proto = FIB_PROTOCOL_IP6,
734 e->next_hop_fib_entry_index =
735 fib_table_entry_special_add(0,
738 FIB_ENTRY_FLAG_NONE);
739 e->next_hop_child_index =
740 fib_entry_child_add(e->next_hop_fib_entry_index,
745 * Create a route that results in the ILA entry
747 dpo_id_t dpo = DPO_INVALID;
750 .ip6 = e->ila_address,
753 .fp_proto = FIB_PROTOCOL_IP6,
756 dpo_set(&dpo, ila_dpo_type, DPO_PROTO_IP6, e - ilm->entries);
758 fib_table_entry_special_dpo_add(0,
761 FIB_ENTRY_FLAG_EXCLUSIVE,
766 * finally stack the ILA entry so it will forward to the next-hop
774 kv.key[0] = args->sir_address.as_u64[0];
775 kv.key[1] = args->sir_address.as_u64[1];
778 if ((BV (clib_bihash_search) (&ilm->id_to_entry_table, &kv, &value) <
784 e = &ilm->entries[value.value];
786 if (!ip6_address_is_zero(&e->next_hop))
790 .ip6 = e->ila_address,
793 .fp_proto = FIB_PROTOCOL_IP6,
796 fib_table_entry_special_remove(0, &pfx, ila_fib_src);
798 * remove this ILA entry as child of the FIB netry for the next-hop
800 fib_entry_child_remove(e->next_hop_fib_entry_index,
801 e->next_hop_child_index);
802 fib_table_entry_delete_index(e->next_hop_fib_entry_index,
804 e->next_hop_fib_entry_index = FIB_NODE_INDEX_INVALID;
806 dpo_reset (&e->ila_dpo);
808 BV (clib_bihash_add_del) (&ilm->id_to_entry_table, &kv,
810 pool_put (ilm->entries, e);
816 ila_interface (u32 sw_if_index, u8 disable)
818 vnet_feature_enable_disable ("ip4-unicast", "sir-to-ila", sw_if_index,
823 VLIB_PLUGIN_REGISTER () = {
824 .version = VPP_BUILD_VER,
825 .description = "Identifier Locator Addressing (ILA) for IPv6",
828 u8 *format_ila_dpo (u8 * s, va_list * va)
830 index_t index = va_arg (*va, index_t);
831 CLIB_UNUSED(u32 indent) = va_arg (*va, u32);
832 ila_main_t *ilm = &ila_main;
833 ila_entry_t *ie = pool_elt_at_index (ilm->entries, index);
834 return format(s, "ILA: idx:%d sir:%U",
836 format_ip6_address, &ie->sir_address);
840 * @brief no-op lock function.
841 * The lifetime of the ILA entry is managed by the control plane
844 ila_dpo_lock (dpo_id_t *dpo)
849 * @brief no-op unlock function.
850 * The lifetime of the ILA entry is managed by the control plane
853 ila_dpo_unlock (dpo_id_t *dpo)
857 const static dpo_vft_t ila_vft = {
858 .dv_lock = ila_dpo_lock,
859 .dv_unlock = ila_dpo_unlock,
860 .dv_format = format_ila_dpo,
862 const static char* const ila_ip6_nodes[] =
867 const static char* const * const ila_nodes[DPO_PROTO_NUM] =
869 [DPO_PROTO_IP6] = ila_ip6_nodes,
873 ila_fib_node_get_node (fib_node_index_t index)
875 ila_main_t *ilm = &ila_main;
876 ila_entry_t *ie = pool_elt_at_index (ilm->entries, index);
878 return (&ie->ila_fib_node);
882 * @brief no-op unlock function.
883 * The lifetime of the ILA entry is managed by the control plane
886 ila_fib_node_last_lock_gone (fib_node_t *node)
891 ila_entry_from_fib_node (fib_node_t *node)
893 return ((ila_entry_t*)(((char*)node) -
894 STRUCT_OFFSET_OF(ila_entry_t, ila_fib_node)));
899 * Callback function invoked when the forwarding changes for the ILA next-hop
901 static fib_node_back_walk_rc_t
902 ila_fib_node_back_walk_notify (fib_node_t *node,
903 fib_node_back_walk_ctx_t *ctx)
905 ila_entry_stack(ila_entry_from_fib_node(node));
907 return (FIB_NODE_BACK_WALK_CONTINUE);
911 * ILA's FIB graph node virtual function table
913 static const fib_node_vft_t ila_fib_node_vft = {
914 .fnv_get = ila_fib_node_get_node,
915 .fnv_last_lock = ila_fib_node_last_lock_gone,
916 .fnv_back_walk = ila_fib_node_back_walk_notify,
920 ila_init (vlib_main_t * vm)
922 ila_main_t *ilm = &ila_main;
925 ilm->lookup_table_nbuckets = ILA_TABLE_DEFAULT_HASH_NUM_BUCKETS;
926 ilm->lookup_table_nbuckets = 1 << max_log2 (ilm->lookup_table_nbuckets);
927 ilm->lookup_table_size = ILA_TABLE_DEFAULT_HASH_MEMORY_SIZE;
929 BV (clib_bihash_init) (&ilm->id_to_entry_table,
930 "ila id to entry index table",
931 ilm->lookup_table_nbuckets, ilm->lookup_table_size);
933 ila_dpo_type = dpo_register_new_type(&ila_vft, ila_nodes);
934 ila_fib_node_type = fib_node_register_new_type ("ila", &ila_fib_node_vft);
935 ila_fib_src = fib_source_allocate("ila",
936 FIB_SOURCE_PRIORITY_HI,
937 FIB_SOURCE_BH_SIMPLE);
941 VLIB_INIT_FUNCTION (ila_init);
943 static clib_error_t *
944 ila_entry_command_fn (vlib_main_t * vm,
945 unformat_input_t * input, vlib_cli_command_t * cmd)
947 unformat_input_t _line_input, *line_input = &_line_input;
948 ila_add_del_entry_args_t args = { 0 };
951 clib_error_t *error = 0;
953 args.type = ILA_TYPE_IID;
954 args.csum_mode = ILA_CSUM_MODE_NO_ACTION;
955 args.local_adj_index = ~0;
956 args.dir = ILA_DIR_BIDIR;
958 if (!unformat_user (input, unformat_line_input, line_input))
961 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
963 if (unformat (line_input, "type %U", unformat_ila_type, &args.type))
966 (line_input, "sir-address %U", unformat_ip6_address,
970 (line_input, "locator %U", unformat_half_ip6_address,
974 (line_input, "csum-mode %U", unformat_ila_csum_mode,
977 else if (unformat (line_input, "vnid %x", &args.vnid))
980 (line_input, "next-hop %U", unformat_ip6_address,
981 &args.next_hop_address))
984 (line_input, "direction %U", unformat_ila_direction, &args.dir))
986 else if (unformat (line_input, "del"))
990 error = clib_error_return (0, "parse error: '%U'",
991 format_unformat_error, line_input);
998 error = clib_error_return (0, "Specified a next hop");
1002 if ((ret = ila_add_del_entry (&args)))
1004 error = clib_error_return (0, "ila_add_del_entry returned error %d", ret);
1009 unformat_free (line_input);
1014 VLIB_CLI_COMMAND (ila_entry_command, static) =
1016 .path = "ila entry",
1017 .short_help = "ila entry [type <type>] [sir-address <address>] [locator <locator>] [vnid <hex-vnid>]"
1018 " [adj-index <adj-index>] [next-hop <next-hop>] [direction (bidir|sir2ila|ila2sir)]"
1019 " [csum-mode (no-action|neutral-map|transport-adjust)] [del]",
1020 .function = ila_entry_command_fn,
1023 static clib_error_t *
1024 ila_interface_command_fn (vlib_main_t * vm,
1025 unformat_input_t * input, vlib_cli_command_t * cmd)
1027 vnet_main_t *vnm = vnet_get_main ();
1028 u32 sw_if_index = ~0;
1031 if (!unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1033 return clib_error_return (0, "Invalid interface name");
1036 if (unformat (input, "disable"))
1042 if ((ret = ila_interface (sw_if_index, disable)))
1043 return clib_error_return (0, "ila_interface returned error %d", ret);
1048 VLIB_CLI_COMMAND (ila_interface_command, static) =
1050 .path = "ila interface",
1051 .short_help = "ila interface <interface-name> [disable]",
1052 .function = ila_interface_command_fn,
1055 static clib_error_t *
1056 ila_show_entries_command_fn (vlib_main_t * vm,
1057 unformat_input_t * input,
1058 vlib_cli_command_t * cmd)
1060 vnet_main_t *vnm = vnet_get_main ();
1061 ila_main_t *ilm = &ila_main;
1064 vlib_cli_output (vm, " %U\n", format_ila_entry, vnm, NULL);
1065 pool_foreach (e, ilm->entries)
1067 vlib_cli_output (vm, " %U\n", format_ila_entry, vnm, e);
1073 VLIB_CLI_COMMAND (ila_show_entries_command, static) =
1075 .path = "show ila entries",
1076 .short_help = "show ila entries",
1077 .function = ila_show_entries_command_fn,