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/ip_lookup.c: ip4/6 adjacency and lookup table managment
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/ip/ip.h>
41 #include <vnet/adj/adj.h>
42 #include <vnet/fib/fib_table.h>
43 #include <vnet/fib/ip4_fib.h>
44 #include <vnet/fib/ip6_fib.h>
45 #include <vnet/mpls/mpls.h>
46 #include <vnet/mfib/mfib_table.h>
47 #include <vnet/dpo/drop_dpo.h>
48 #include <vnet/dpo/classify_dpo.h>
49 #include <vnet/dpo/punt_dpo.h>
50 #include <vnet/dpo/receive_dpo.h>
51 #include <vnet/dpo/ip_null_dpo.h>
52 #include <vnet/ip/ip6_neighbor.h>
56 * @brief IPv4 and IPv6 adjacency and lookup table managment.
61 ip_interface_address_add_del (ip_lookup_main_t * lm,
65 u32 is_del, u32 * result_if_address_index)
67 vnet_main_t *vnm = vnet_get_main ();
68 ip_interface_address_t *a, *prev, *next;
69 uword *p = mhash_get (&lm->address_to_if_address_index, addr_fib);
71 vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index,
73 a = p ? pool_elt_at_index (lm->if_address_pool, p[0]) : 0;
75 /* Verify given length. */
76 if ((a && (address_length != a->address_length)) || (address_length == 0))
78 vnm->api_errno = VNET_API_ERROR_ADDRESS_LENGTH_MISMATCH;
79 return clib_error_create
80 ("%U wrong length (expected %d) for interface %U",
81 lm->format_address_and_length, addr_fib,
82 address_length, a ? a->address_length : -1,
83 format_vnet_sw_if_index_name, vnm, sw_if_index);
90 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
91 vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
92 return clib_error_create ("%U not found for interface %U",
93 lm->format_address_and_length,
94 addr_fib, address_length,
95 format_vnet_sw_interface_name, vnm, si);
98 if (a->prev_this_sw_interface != ~0)
101 pool_elt_at_index (lm->if_address_pool,
102 a->prev_this_sw_interface);
103 prev->next_this_sw_interface = a->next_this_sw_interface;
105 if (a->next_this_sw_interface != ~0)
108 pool_elt_at_index (lm->if_address_pool,
109 a->next_this_sw_interface);
110 next->prev_this_sw_interface = a->prev_this_sw_interface;
112 if (a->prev_this_sw_interface == ~0)
113 lm->if_address_pool_index_by_sw_if_index[sw_if_index] =
114 a->next_this_sw_interface;
117 if ((a->next_this_sw_interface == ~0)
118 && (a->prev_this_sw_interface == ~0))
119 lm->if_address_pool_index_by_sw_if_index[sw_if_index] = ~0;
121 mhash_unset (&lm->address_to_if_address_index, addr_fib,
123 pool_put (lm->if_address_pool, a);
125 if (result_if_address_index)
126 *result_if_address_index = ~0;
131 u32 pi; /* previous index */
133 u32 hi; /* head index */
135 pool_get (lm->if_address_pool, a);
136 memset (a, ~0, sizeof (a[0]));
137 ai = a - lm->if_address_pool;
139 hi = pi = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
141 while (pi != (u32) ~ 0)
143 prev = pool_elt_at_index (lm->if_address_pool, pi);
144 pi = prev->next_this_sw_interface;
146 pi = prev ? prev - lm->if_address_pool : (u32) ~ 0;
148 a->address_key = mhash_set (&lm->address_to_if_address_index,
149 addr_fib, ai, /* old_value */ 0);
150 a->address_length = address_length;
151 a->sw_if_index = sw_if_index;
153 a->prev_this_sw_interface = pi;
154 a->next_this_sw_interface = ~0;
156 prev->next_this_sw_interface = ai;
158 lm->if_address_pool_index_by_sw_if_index[sw_if_index] =
159 (hi != ~0) ? hi : ai;
160 if (result_if_address_index)
161 *result_if_address_index = ai;
165 if (result_if_address_index)
166 *result_if_address_index = a - lm->if_address_pool;
170 return /* no error */ 0;
174 ip_lookup_init (ip_lookup_main_t * lm, u32 is_ip6)
176 /* ensure that adjacency is cacheline aligned and sized */
177 STATIC_ASSERT (STRUCT_OFFSET_OF (ip_adjacency_t, cacheline0) == 0,
178 "Cache line marker must be 1st element in struct");
179 STATIC_ASSERT (STRUCT_OFFSET_OF (ip_adjacency_t, cacheline1) ==
180 CLIB_CACHE_LINE_BYTES,
181 "Data in cache line 0 is bigger than cache line size");
183 /* Preallocate three "special" adjacencies */
184 lm->adjacency_heap = adj_pool;
186 if (!lm->fib_result_n_bytes)
187 lm->fib_result_n_bytes = sizeof (uword);
192 lm->format_address_and_length = format_ip6_address_and_length;
193 mhash_init (&lm->address_to_if_address_index, sizeof (uword),
194 sizeof (ip6_address_fib_t));
198 lm->format_address_and_length = format_ip4_address_and_length;
199 mhash_init (&lm->address_to_if_address_index, sizeof (uword),
200 sizeof (ip4_address_fib_t));
206 /* Setup all IP protocols to be punted and builtin-unknown. */
207 for (i = 0; i < 256; i++)
209 lm->local_next_by_ip_protocol[i] = IP_LOCAL_NEXT_PUNT;
210 lm->builtin_protocol_by_ip_protocol[i] = IP_BUILTIN_PROTOCOL_UNKNOWN;
213 lm->local_next_by_ip_protocol[IP_PROTOCOL_UDP] = IP_LOCAL_NEXT_UDP_LOOKUP;
214 lm->local_next_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
215 IP_PROTOCOL_ICMP] = IP_LOCAL_NEXT_ICMP;
216 lm->builtin_protocol_by_ip_protocol[IP_PROTOCOL_UDP] =
217 IP_BUILTIN_PROTOCOL_UDP;
218 lm->builtin_protocol_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
220 IP_BUILTIN_PROTOCOL_ICMP;
225 format_ip_flow_hash_config (u8 * s, va_list * args)
227 flow_hash_config_t flow_hash_config = va_arg (*args, u32);
229 #define _(n,v) if (flow_hash_config & v) s = format (s, "%s ", #n);
230 foreach_flow_hash_bit;
237 format_ip_lookup_next (u8 * s, va_list * args)
239 ip_lookup_next_t n = va_arg (*args, ip_lookup_next_t);
245 s = format (s, "unknown %d", n);
248 case IP_LOOKUP_NEXT_DROP:
251 case IP_LOOKUP_NEXT_PUNT:
254 case IP_LOOKUP_NEXT_ARP:
257 case IP_LOOKUP_NEXT_MIDCHAIN:
260 case IP_LOOKUP_NEXT_GLEAN:
263 case IP_LOOKUP_NEXT_MCAST:
266 case IP_LOOKUP_NEXT_REWRITE:
271 vec_add (s, t, strlen (t));
277 format_ip_adjacency_packet_data (u8 * s, va_list * args)
279 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
280 u32 adj_index = va_arg (*args, u32);
281 u8 *packet_data = va_arg (*args, u8 *);
282 u32 n_packet_data_bytes = va_arg (*args, u32);
283 ip_adjacency_t *adj = adj_get (adj_index);
285 switch (adj->lookup_next_index)
287 case IP_LOOKUP_NEXT_REWRITE:
289 format_vnet_rewrite_header,
290 vnm->vlib_main, &adj->rewrite_header, packet_data,
291 n_packet_data_bytes);
302 unformat_dpo (unformat_input_t * input, va_list * args)
304 dpo_id_t *dpo = va_arg (*args, dpo_id_t *);
305 fib_protocol_t fp = va_arg (*args, int);
308 proto = fib_proto_to_dpo (fp);
310 if (unformat (input, "drop"))
311 dpo_copy (dpo, drop_dpo_get (proto));
312 else if (unformat (input, "punt"))
313 dpo_copy (dpo, punt_dpo_get (proto));
314 else if (unformat (input, "local"))
315 receive_dpo_add_or_lock (proto, ~0, NULL, dpo);
316 else if (unformat (input, "null-send-unreach"))
317 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_UNREACH, dpo);
318 else if (unformat (input, "null-send-prohibit"))
319 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_PROHIBIT, dpo);
320 else if (unformat (input, "null"))
321 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_NONE, dpo);
322 else if (unformat (input, "classify"))
324 u32 classify_table_index;
326 if (!unformat (input, "%d", &classify_table_index))
328 clib_warning ("classify adj must specify table index");
332 dpo_set (dpo, DPO_CLASSIFY, proto,
333 classify_dpo_create (proto, classify_table_index));
341 const ip46_address_t zero_addr = {
347 fib_table_id_find_fib_index (fib_protocol_t proto, u32 table_id)
349 ip4_main_t *im4 = &ip4_main;
350 ip6_main_t *im6 = &ip6_main;
355 case FIB_PROTOCOL_IP4:
356 p = hash_get (im4->fib_index_by_table_id, table_id);
358 case FIB_PROTOCOL_IP6:
359 p = hash_get (im6->fib_index_by_table_id, table_id);
373 vnet_ip_route_cmd (vlib_main_t * vm,
374 unformat_input_t * main_input, vlib_cli_command_t * cmd)
376 unformat_input_t _line_input, *line_input = &_line_input;
377 fib_route_path_t *rpaths = NULL, rpath;
378 dpo_id_t dpo = DPO_INVALID, *dpos = NULL;
379 fib_prefix_t *prefixs = NULL, pfx;
380 mpls_label_t out_label, via_label;
381 clib_error_t *error = NULL;
382 u32 table_id, is_del;
388 vnm = vnet_get_main ();
392 memset (&pfx, 0, sizeof (pfx));
393 out_label = via_label = MPLS_LABEL_INVALID;
395 /* Get a line of input. */
396 if (!unformat_user (main_input, unformat_line_input, line_input))
399 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
401 memset (&rpath, 0, sizeof (rpath));
403 if (unformat (line_input, "table %d", &table_id))
405 else if (unformat (line_input, "del"))
407 else if (unformat (line_input, "add"))
409 else if (unformat (line_input, "resolve-via-host"))
411 if (vec_len (rpaths) == 0)
413 error = clib_error_return (0, "Paths then flags");
416 rpaths[vec_len (rpaths) - 1].frp_flags |=
417 FIB_ROUTE_PATH_RESOLVE_VIA_HOST;
419 else if (unformat (line_input, "resolve-via-attached"))
421 if (vec_len (rpaths) == 0)
423 error = clib_error_return (0, "Paths then flags");
426 rpaths[vec_len (rpaths) - 1].frp_flags |=
427 FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
429 else if (unformat (line_input, "out-label %U",
430 unformat_mpls_unicast_label, &out_label))
432 if (vec_len (rpaths) == 0)
434 error = clib_error_return (0, "Paths then labels");
437 vec_add1 (rpaths[vec_len (rpaths) - 1].frp_label_stack, out_label);
439 else if (unformat (line_input, "via-label %U",
440 unformat_mpls_unicast_label, &rpath.frp_local_label))
442 rpath.frp_weight = 1;
443 rpath.frp_proto = FIB_PROTOCOL_MPLS;
444 rpath.frp_sw_if_index = ~0;
445 vec_add1 (rpaths, rpath);
447 else if (unformat (line_input, "count %f", &count))
450 else if (unformat (line_input, "%U/%d",
451 unformat_ip4_address, &pfx.fp_addr.ip4, &pfx.fp_len))
453 pfx.fp_proto = FIB_PROTOCOL_IP4;
454 vec_add1 (prefixs, pfx);
456 else if (unformat (line_input, "%U/%d",
457 unformat_ip6_address, &pfx.fp_addr.ip6, &pfx.fp_len))
459 pfx.fp_proto = FIB_PROTOCOL_IP6;
460 vec_add1 (prefixs, pfx);
462 else if (unformat (line_input, "via %U %U weight %u",
463 unformat_ip4_address,
465 unformat_vnet_sw_interface, vnm,
466 &rpath.frp_sw_if_index, &rpath.frp_weight))
468 rpath.frp_proto = FIB_PROTOCOL_IP4;
469 vec_add1 (rpaths, rpath);
472 else if (unformat (line_input, "via %U %U weight %u",
473 unformat_ip6_address,
475 unformat_vnet_sw_interface, vnm,
476 &rpath.frp_sw_if_index, &rpath.frp_weight))
478 rpath.frp_proto = FIB_PROTOCOL_IP6;
479 vec_add1 (rpaths, rpath);
482 else if (unformat (line_input, "via %U %U",
483 unformat_ip4_address,
485 unformat_vnet_sw_interface, vnm,
486 &rpath.frp_sw_if_index))
488 rpath.frp_weight = 1;
489 rpath.frp_proto = FIB_PROTOCOL_IP4;
490 vec_add1 (rpaths, rpath);
493 else if (unformat (line_input, "via %U %U",
494 unformat_ip6_address,
496 unformat_vnet_sw_interface, vnm,
497 &rpath.frp_sw_if_index))
499 rpath.frp_weight = 1;
500 rpath.frp_proto = FIB_PROTOCOL_IP6;
501 vec_add1 (rpaths, rpath);
503 else if (unformat (line_input, "via %U next-hop-table %d",
504 unformat_ip4_address,
505 &rpath.frp_addr.ip4, &rpath.frp_fib_index))
507 rpath.frp_weight = 1;
508 rpath.frp_sw_if_index = ~0;
509 rpath.frp_proto = FIB_PROTOCOL_IP4;
510 vec_add1 (rpaths, rpath);
512 else if (unformat (line_input, "via %U next-hop-table %d",
513 unformat_ip6_address,
514 &rpath.frp_addr.ip6, &rpath.frp_fib_index))
516 rpath.frp_weight = 1;
517 rpath.frp_sw_if_index = ~0;
518 rpath.frp_proto = FIB_PROTOCOL_IP6;
519 vec_add1 (rpaths, rpath);
521 else if (unformat (line_input, "via %U",
522 unformat_ip4_address, &rpath.frp_addr.ip4))
525 * the recursive next-hops are by default in the same table
528 rpath.frp_fib_index = table_id;
529 rpath.frp_weight = 1;
530 rpath.frp_sw_if_index = ~0;
531 rpath.frp_proto = FIB_PROTOCOL_IP4;
532 vec_add1 (rpaths, rpath);
534 else if (unformat (line_input, "via %U",
535 unformat_ip6_address, &rpath.frp_addr.ip6))
537 rpath.frp_fib_index = table_id;
538 rpath.frp_weight = 1;
539 rpath.frp_sw_if_index = ~0;
540 rpath.frp_proto = FIB_PROTOCOL_IP6;
541 vec_add1 (rpaths, rpath);
543 else if (unformat (line_input,
544 "lookup in table %d", &rpath.frp_fib_index))
546 rpath.frp_proto = pfx.fp_proto;
547 rpath.frp_sw_if_index = ~0;
548 vec_add1 (rpaths, rpath);
550 else if (vec_len (prefixs) > 0 &&
551 unformat (line_input, "via %U",
552 unformat_vnet_sw_interface, vnm,
553 &rpath.frp_sw_if_index))
555 rpath.frp_weight = 1;
556 rpath.frp_proto = prefixs[0].fp_proto;
557 vec_add1 (rpaths, rpath);
559 else if (vec_len (prefixs) > 0 &&
560 unformat (line_input, "via %U",
561 unformat_dpo, &dpo, prefixs[0].fp_proto))
563 vec_add1 (dpos, dpo);
567 error = unformat_parse_error (line_input);
572 if (vec_len (prefixs) == 0)
575 clib_error_return (0, "expected ip4/ip6 destination address/length.");
579 if (!is_del && vec_len (rpaths) + vec_len (dpos) == 0)
581 error = clib_error_return (0, "expected paths.");
588 * if no table_id is passed we will manipulate the default
594 fib_index = fib_table_id_find_fib_index (prefixs[0].fp_proto, table_id);
598 error = clib_error_return (0, "Nonexistent table id %d", table_id);
603 for (i = 0; i < vec_len (prefixs); i++)
605 if (is_del && 0 == vec_len (rpaths))
607 fib_table_entry_delete (fib_index, &prefixs[i], FIB_SOURCE_CLI);
609 else if (!is_del && 1 == vec_len (dpos))
611 fib_table_entry_special_dpo_add (fib_index,
614 FIB_ENTRY_FLAG_EXCLUSIVE,
616 dpo_reset (&dpos[0]);
618 else if (vec_len (dpos) > 0)
621 clib_error_return (0,
622 "Load-balancing over multiple special adjacencies is unsupported");
625 else if (0 < vec_len (rpaths))
628 ip46_address_t dst = prefixs[i].fp_addr;
631 t[0] = vlib_time_now (vm);
632 incr = 1 << ((FIB_PROTOCOL_IP4 == prefixs[0].fp_proto ? 32 : 128) -
635 for (k = 0; k < n; k++)
637 for (j = 0; j < vec_len (rpaths); j++)
641 * the CLI parsing stored table Ids, swap to FIB indicies
643 fi = fib_table_id_find_fib_index (prefixs[i].fp_proto,
644 rpaths[i].frp_fib_index);
649 clib_error_return (0, "Via table %d does not exist",
650 rpaths[i].frp_fib_index);
653 rpaths[i].frp_fib_index = fi;
655 fib_prefix_t rpfx = {
656 .fp_len = prefixs[i].fp_len,
657 .fp_proto = prefixs[i].fp_proto,
662 fib_table_entry_path_remove2 (fib_index,
664 FIB_SOURCE_CLI, &rpaths[j]);
666 fib_table_entry_path_add2 (fib_index,
673 if (FIB_PROTOCOL_IP4 == prefixs[0].fp_proto)
676 clib_host_to_net_u32 (incr +
677 clib_net_to_host_u32 (dst.
682 int bucket = (incr < 64 ? 0 : 1);
683 dst.ip6.as_u64[bucket] =
684 clib_host_to_net_u64 (incr +
685 clib_net_to_host_u64 (dst.ip6.as_u64
690 t[1] = vlib_time_now (vm);
692 vlib_cli_output (vm, "%.6e routes/sec", count / (t[1] - t[0]));
696 error = clib_error_return (0, "Don't understand what you want...");
706 unformat_free (line_input);
711 VLIB_CLI_COMMAND (vlib_cli_ip_command, static) = {
713 .short_help = "Internet protocol (IP) commands",
718 VLIB_CLI_COMMAND (vlib_cli_ip6_command, static) = {
720 .short_help = "Internet protocol version 6 (IPv6) commands",
725 VLIB_CLI_COMMAND (vlib_cli_show_ip_command, static) = {
727 .short_help = "Internet protocol (IP) show commands",
732 VLIB_CLI_COMMAND (vlib_cli_show_ip6_command, static) = {
734 .short_help = "Internet protocol version 6 (IPv6) show commands",
739 * This command is used to add or delete IPv4 or IPv6 routes. All
740 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
741 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
742 * can be IPv4 or IPv6, but all must be of the same form in a single
743 * command. To display the current set of routes, use the commands
744 * '<em>show ip fib</em>' and '<em>show ip6 fib</em>'.
747 * Example of how to add a straight forward static route:
748 * @cliexcmd{ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
749 * Example of how to delete a straight forward static route:
750 * @cliexcmd{ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
751 * Mainly for route add/del performance testing, one can add or delete
752 * multiple routes by adding 'count N' to the previous item:
753 * @cliexcmd{ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0}
754 * Add multiple routes for the same destination to create equal-cost multipath:
755 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0}
756 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0}
757 * For unequal-cost multipath, specify the desired weights. This
758 * combination of weights results in 3/4 of the traffic following the
759 * second path, 1/4 following the first path:
760 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1}
761 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3}
762 * To add a route to a particular FIB table (VRF), use:
763 * @cliexcmd{ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0}
766 VLIB_CLI_COMMAND (ip_route_command, static) = {
768 .short_help = "ip route [add|del] [count <n>] <dst-ip-addr>/<width> [table <table-id>] [via <next-hop-ip-addr> [<interface>] [weight <weight>]] | [via arp <interface> <adj-hop-ip-addr>] | [via drop|punt|local<id>|arp|classify <classify-idx>] [lookup in table <out-table-id>]",
769 .function = vnet_ip_route_cmd,
775 vnet_ip_mroute_cmd (vlib_main_t * vm,
776 unformat_input_t * main_input, vlib_cli_command_t * cmd)
778 unformat_input_t _line_input, *line_input = &_line_input;
779 clib_error_t *error = NULL;
780 fib_route_path_t rpath;
781 u32 table_id, is_del;
785 mfib_itf_flags_t iflags = 0;
786 mfib_entry_flags_t eflags = 0;
787 u32 gcount, scount, ss, gg, incr;
791 vnm = vnet_get_main ();
794 memset (&pfx, 0, sizeof (pfx));
795 memset (&rpath, 0, sizeof (rpath));
796 rpath.frp_sw_if_index = ~0;
798 /* Get a line of input. */
799 if (!unformat_user (main_input, unformat_line_input, line_input))
802 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
804 if (unformat (line_input, "table %d", &table_id))
806 else if (unformat (line_input, "del"))
808 else if (unformat (line_input, "add"))
810 else if (unformat (line_input, "scount %d", &scount))
812 else if (unformat (line_input, "gcount %d", &gcount))
814 else if (unformat (line_input, "%U %U",
815 unformat_ip4_address,
816 &pfx.fp_src_addr.ip4,
817 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
819 pfx.fp_proto = FIB_PROTOCOL_IP4;
822 else if (unformat (line_input, "%U %U",
823 unformat_ip6_address,
824 &pfx.fp_src_addr.ip6,
825 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
827 pfx.fp_proto = FIB_PROTOCOL_IP6;
830 else if (unformat (line_input, "%U/%d",
831 unformat_ip4_address,
832 &pfx.fp_grp_addr.ip4, &pfx.fp_len))
834 pfx.fp_proto = FIB_PROTOCOL_IP4;
836 else if (unformat (line_input, "%U/%d",
837 unformat_ip6_address,
838 &pfx.fp_grp_addr.ip6, &pfx.fp_len))
840 pfx.fp_proto = FIB_PROTOCOL_IP6;
842 else if (unformat (line_input, "%U",
843 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
845 memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
846 pfx.fp_proto = FIB_PROTOCOL_IP4;
849 else if (unformat (line_input, "%U",
850 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
852 memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
853 pfx.fp_proto = FIB_PROTOCOL_IP6;
856 else if (unformat (line_input, "via %U",
857 unformat_vnet_sw_interface, vnm,
858 &rpath.frp_sw_if_index))
860 rpath.frp_weight = 1;
861 rpath.frp_proto = FIB_PROTOCOL_IP4;
863 else if (unformat (line_input, "%U", unformat_mfib_itf_flags, &iflags))
865 else if (unformat (line_input, "%U",
866 unformat_mfib_entry_flags, &eflags))
870 error = unformat_parse_error (line_input);
878 * if no table_id is passed we will manipulate the default
884 fib_index = mfib_table_find (pfx.fp_proto, table_id);
888 error = clib_error_return (0, "Nonexistent table id %d", table_id);
893 timet[0] = vlib_time_now (vm);
895 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
897 incr = 1 << (32 - (pfx.fp_len % 32));
901 incr = 1 << (128 - (pfx.fp_len % 128));
904 for (ss = 0; ss < scount; ss++)
906 for (gg = 0; gg < gcount; gg++)
908 if (is_del && 0 == rpath.frp_weight)
910 /* no path provided => route delete */
911 mfib_table_entry_delete (fib_index, &pfx, MFIB_SOURCE_CLI);
915 mfib_table_entry_update (fib_index, &pfx, MFIB_SOURCE_CLI,
921 mfib_table_entry_path_remove (fib_index,
922 &pfx, MFIB_SOURCE_CLI, &rpath);
924 mfib_table_entry_path_update (fib_index,
925 &pfx, MFIB_SOURCE_CLI, &rpath,
929 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
931 pfx.fp_grp_addr.ip4.as_u32 =
932 clib_host_to_net_u32 (incr +
933 clib_net_to_host_u32 (pfx.
939 int bucket = (incr < 64 ? 0 : 1);
940 pfx.fp_grp_addr.ip6.as_u64[bucket] =
941 clib_host_to_net_u64 (incr +
942 clib_net_to_host_u64 (pfx.
943 fp_grp_addr.ip6.as_u64
948 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
950 pfx.fp_src_addr.ip4.as_u32 =
951 clib_host_to_net_u32 (1 +
952 clib_net_to_host_u32 (pfx.fp_src_addr.
957 pfx.fp_src_addr.ip6.as_u64[1] =
958 clib_host_to_net_u64 (1 +
959 clib_net_to_host_u64 (pfx.fp_src_addr.
964 timet[1] = vlib_time_now (vm);
966 if (scount > 1 || gcount > 1)
967 vlib_cli_output (vm, "%.6e routes/sec",
968 (scount * gcount) / (timet[1] - timet[0]));
971 unformat_free (line_input);
977 * This command is used to add or delete IPv4 or IPv6 multicastroutes. All
978 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
979 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
980 * can be IPv4 or IPv6, but all must be of the same form in a single
981 * command. To display the current set of routes, use the commands
982 * '<em>show ip mfib</em>' and '<em>show ip6 mfib</em>'.
983 * The full set of support flags for interfaces and route is shown via;
984 * '<em>show mfib route flags</em>' and '<em>show mfib itf flags</em>'
987 * Example of how to add a forwarding interface to a route (and create the
988 * route if it does not exist)
989 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/0 Forward}
990 * Example of how to add an accepting interface to a route (and create the
991 * route if it does not exist)
992 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/1 Accept}
993 * Example of changing the route's flags to send signals via the API
994 * @cliexcmd{ip mroute add 232.1.1.1 Signal}
998 VLIB_CLI_COMMAND (ip_mroute_command, static) =
1000 .path = "ip mroute",
1001 .short_help = "ip mroute [add|del] <dst-ip-addr>/<width> [table <table-id>] [via <next-hop-ip-addr> [<interface>],",
1002 .function = vnet_ip_mroute_cmd,
1008 * The next two routines address a longstanding script hemorrhoid.
1009 * Probing a v4 or v6 neighbor needs to appear to be synchronous,
1010 * or dependent route-adds will simply fail.
1012 static clib_error_t *
1013 ip6_probe_neighbor_wait (vlib_main_t * vm, ip6_address_t * a, u32 sw_if_index,
1016 vnet_main_t *vnm = vnet_get_main ();
1021 uword *event_data = 0;
1023 ASSERT (vlib_in_process_context (vm));
1025 if (retry_count > 0)
1026 vnet_register_ip6_neighbor_resolution_event
1027 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1028 1 /* event */ , 0 /* data */ );
1030 for (i = 0; i < retry_count; i++)
1032 /* The interface may be down, etc. */
1033 e = ip6_probe_neighbor (vm, a, sw_if_index);
1038 vlib_process_wait_for_event_or_clock (vm, 1.0);
1039 event_type = vlib_process_get_events (vm, &event_data);
1042 case 1: /* resolved... */
1043 vlib_cli_output (vm, "Resolved %U", format_ip6_address, a);
1047 case ~0: /* timeout */
1051 clib_warning ("unknown event_type %d", event_type);
1053 vec_reset_length (event_data);
1059 return clib_error_return (0, "Resolution failed for %U",
1060 format_ip6_address, a);
1064 static clib_error_t *
1065 ip4_probe_neighbor_wait (vlib_main_t * vm, ip4_address_t * a, u32 sw_if_index,
1068 vnet_main_t *vnm = vnet_get_main ();
1073 uword *event_data = 0;
1075 ASSERT (vlib_in_process_context (vm));
1077 if (retry_count > 0)
1078 vnet_register_ip4_arp_resolution_event
1079 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1080 1 /* event */ , 0 /* data */ );
1082 for (i = 0; i < retry_count; i++)
1084 /* The interface may be down, etc. */
1085 e = ip4_probe_neighbor (vm, a, sw_if_index);
1090 vlib_process_wait_for_event_or_clock (vm, 1.0);
1091 event_type = vlib_process_get_events (vm, &event_data);
1094 case 1: /* resolved... */
1095 vlib_cli_output (vm, "Resolved %U", format_ip4_address, a);
1099 case ~0: /* timeout */
1103 clib_warning ("unknown event_type %d", event_type);
1105 vec_reset_length (event_data);
1110 vec_reset_length (event_data);
1113 return clib_error_return (0, "Resolution failed for %U",
1114 format_ip4_address, a);
1118 static clib_error_t *
1119 probe_neighbor_address (vlib_main_t * vm,
1120 unformat_input_t * input, vlib_cli_command_t * cmd)
1122 vnet_main_t *vnm = vnet_get_main ();
1123 unformat_input_t _line_input, *line_input = &_line_input;
1126 clib_error_t *error = 0;
1127 u32 sw_if_index = ~0;
1128 int retry_count = 3;
1130 int address_set = 0;
1132 /* Get a line of input. */
1133 if (!unformat_user (input, unformat_line_input, line_input))
1136 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1138 if (unformat_user (line_input, unformat_vnet_sw_interface, vnm,
1141 else if (unformat (line_input, "retry %d", &retry_count))
1144 else if (unformat (line_input, "%U", unformat_ip4_address, &a4))
1146 else if (unformat (line_input, "%U", unformat_ip6_address, &a6))
1153 error = clib_error_return (0, "unknown input '%U'",
1154 format_unformat_error, line_input);
1159 if (sw_if_index == ~0)
1161 error = clib_error_return (0, "Interface required, not set.");
1164 if (address_set == 0)
1166 error = clib_error_return (0, "ip address required, not set.");
1169 if (address_set > 1)
1171 error = clib_error_return (0, "Multiple ip addresses not supported.");
1176 error = ip4_probe_neighbor_wait (vm, &a4, sw_if_index, retry_count);
1178 error = ip6_probe_neighbor_wait (vm, &a6, sw_if_index, retry_count);
1181 unformat_free (line_input);
1187 * The '<em>ip probe-neighbor</em>' command ARPs for IPv4 addresses or
1188 * attempts IPv6 neighbor discovery depending on the supplied IP address
1191 * @note This command will not immediately affect the indicated FIB; it
1192 * is not suitable for use in establishing a FIB entry prior to adding
1193 * recursive FIB entries. As in: don't use it in a script to probe a
1194 * gateway prior to adding a default route. It won't work. Instead,
1195 * configure a static ARP cache entry [see '<em>set ip arp</em>'], or
1196 * a static IPv6 neighbor [see '<em>set ip6 neighbor</em>'].
1199 * Example of probe for an IPv4 address:
1200 * @cliexcmd{ip probe-neighbor GigabitEthernet2/0/0 172.16.1.2}
1203 VLIB_CLI_COMMAND (ip_probe_neighbor_command, static) = {
1204 .path = "ip probe-neighbor",
1205 .function = probe_neighbor_address,
1206 .short_help = "ip probe-neighbor <interface> <ip4-addr> | <ip6-addr> [retry nn]",
1212 * fd.io coding-style-patch-verification: ON
1215 * eval: (c-set-style "gnu")