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;
173 static clib_error_t *
174 ip_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
176 vec_validate_init_empty (ip4_main.
177 lookup_main.if_address_pool_index_by_sw_if_index,
179 vec_validate_init_empty (ip6_main.
180 lookup_main.if_address_pool_index_by_sw_if_index,
186 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip_sw_interface_add_del);
189 ip_lookup_init (ip_lookup_main_t * lm, u32 is_ip6)
191 /* Preallocate three "special" adjacencies */
192 lm->adjacency_heap = adj_pool;
194 if (!lm->fib_result_n_bytes)
195 lm->fib_result_n_bytes = sizeof (uword);
200 lm->format_address_and_length = format_ip6_address_and_length;
201 mhash_init (&lm->address_to_if_address_index, sizeof (uword),
202 sizeof (ip6_address_fib_t));
206 lm->format_address_and_length = format_ip4_address_and_length;
207 mhash_init (&lm->address_to_if_address_index, sizeof (uword),
208 sizeof (ip4_address_fib_t));
214 /* Setup all IP protocols to be punted and builtin-unknown. */
215 for (i = 0; i < 256; i++)
217 lm->local_next_by_ip_protocol[i] = IP_LOCAL_NEXT_PUNT;
218 lm->builtin_protocol_by_ip_protocol[i] = IP_BUILTIN_PROTOCOL_UNKNOWN;
221 lm->local_next_by_ip_protocol[IP_PROTOCOL_UDP] = IP_LOCAL_NEXT_UDP_LOOKUP;
222 lm->local_next_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
223 IP_PROTOCOL_ICMP] = IP_LOCAL_NEXT_ICMP;
224 lm->builtin_protocol_by_ip_protocol[IP_PROTOCOL_UDP] =
225 IP_BUILTIN_PROTOCOL_UDP;
226 lm->builtin_protocol_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
228 IP_BUILTIN_PROTOCOL_ICMP;
233 format_ip_flow_hash_config (u8 * s, va_list * args)
235 flow_hash_config_t flow_hash_config = va_arg (*args, u32);
237 #define _(n,v) if (flow_hash_config & v) s = format (s, "%s ", #n);
238 foreach_flow_hash_bit;
245 format_ip_lookup_next (u8 * s, va_list * args)
247 /* int promotion of ip_lookup_next_t */
248 ip_lookup_next_t n = va_arg (*args, int);
254 s = format (s, "unknown %d", n);
257 case IP_LOOKUP_NEXT_DROP:
260 case IP_LOOKUP_NEXT_PUNT:
263 case IP_LOOKUP_NEXT_ARP:
266 case IP_LOOKUP_NEXT_MIDCHAIN:
269 case IP_LOOKUP_NEXT_GLEAN:
272 case IP_LOOKUP_NEXT_MCAST:
275 case IP_LOOKUP_NEXT_REWRITE:
280 vec_add (s, t, strlen (t));
286 format_ip_adjacency_packet_data (u8 * s, va_list * args)
288 u32 adj_index = va_arg (*args, u32);
289 u8 *packet_data = va_arg (*args, u8 *);
290 u32 n_packet_data_bytes = va_arg (*args, u32);
291 ip_adjacency_t *adj = adj_get (adj_index);
293 switch (adj->lookup_next_index)
295 case IP_LOOKUP_NEXT_REWRITE:
296 case IP_LOOKUP_NEXT_MCAST:
298 format (s, "%U", format_hex_bytes, packet_data, n_packet_data_bytes);
309 unformat_dpo (unformat_input_t * input, va_list * args)
311 dpo_id_t *dpo = va_arg (*args, dpo_id_t *);
312 fib_protocol_t fp = va_arg (*args, int);
315 proto = fib_proto_to_dpo (fp);
317 if (unformat (input, "drop"))
318 dpo_copy (dpo, drop_dpo_get (proto));
319 else if (unformat (input, "punt"))
320 dpo_copy (dpo, punt_dpo_get (proto));
321 else if (unformat (input, "local"))
322 receive_dpo_add_or_lock (proto, ~0, NULL, dpo);
323 else if (unformat (input, "null-send-unreach"))
324 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_UNREACH, dpo);
325 else if (unformat (input, "null-send-prohibit"))
326 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_PROHIBIT, dpo);
327 else if (unformat (input, "null"))
328 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_NONE, dpo);
329 else if (unformat (input, "classify"))
331 u32 classify_table_index;
333 if (!unformat (input, "%d", &classify_table_index))
335 clib_warning ("classify adj must specify table index");
339 dpo_set (dpo, DPO_CLASSIFY, proto,
340 classify_dpo_create (proto, classify_table_index));
348 const ip46_address_t zero_addr = {
354 fib_table_id_find_fib_index (fib_protocol_t proto, u32 table_id)
356 ip4_main_t *im4 = &ip4_main;
357 ip6_main_t *im6 = &ip6_main;
362 case FIB_PROTOCOL_IP4:
363 p = hash_get (im4->fib_index_by_table_id, table_id);
365 case FIB_PROTOCOL_IP6:
366 p = hash_get (im6->fib_index_by_table_id, table_id);
380 vnet_ip_route_cmd (vlib_main_t * vm,
381 unformat_input_t * main_input, vlib_cli_command_t * cmd)
383 unformat_input_t _line_input, *line_input = &_line_input;
384 fib_route_path_t *rpaths = NULL, rpath;
385 dpo_id_t dpo = DPO_INVALID, *dpos = NULL;
386 fib_prefix_t *prefixs = NULL, pfx;
387 mpls_label_t out_label, via_label;
388 clib_error_t *error = NULL;
389 u32 table_id, is_del;
395 vnm = vnet_get_main ();
399 memset (&pfx, 0, sizeof (pfx));
400 out_label = via_label = MPLS_LABEL_INVALID;
402 /* Get a line of input. */
403 if (!unformat_user (main_input, unformat_line_input, line_input))
406 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
408 memset (&rpath, 0, sizeof (rpath));
410 if (unformat (line_input, "table %d", &table_id))
412 else if (unformat (line_input, "del"))
414 else if (unformat (line_input, "add"))
416 else if (unformat (line_input, "resolve-via-host"))
418 if (vec_len (rpaths) == 0)
420 error = clib_error_return (0, "Paths then flags");
423 rpaths[vec_len (rpaths) - 1].frp_flags |=
424 FIB_ROUTE_PATH_RESOLVE_VIA_HOST;
426 else if (unformat (line_input, "resolve-via-attached"))
428 if (vec_len (rpaths) == 0)
430 error = clib_error_return (0, "Paths then flags");
433 rpaths[vec_len (rpaths) - 1].frp_flags |=
434 FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
436 else if (unformat (line_input, "out-label %U",
437 unformat_mpls_unicast_label, &out_label))
439 if (vec_len (rpaths) == 0)
441 error = clib_error_return (0, "Paths then labels");
444 vec_add1 (rpaths[vec_len (rpaths) - 1].frp_label_stack, out_label);
446 else if (unformat (line_input, "via-label %U",
447 unformat_mpls_unicast_label, &rpath.frp_local_label))
449 rpath.frp_weight = 1;
450 rpath.frp_proto = FIB_PROTOCOL_MPLS;
451 rpath.frp_sw_if_index = ~0;
452 vec_add1 (rpaths, rpath);
454 else if (unformat (line_input, "count %f", &count))
457 else if (unformat (line_input, "%U/%d",
458 unformat_ip4_address, &pfx.fp_addr.ip4, &pfx.fp_len))
460 pfx.fp_proto = FIB_PROTOCOL_IP4;
461 vec_add1 (prefixs, pfx);
463 else if (unformat (line_input, "%U/%d",
464 unformat_ip6_address, &pfx.fp_addr.ip6, &pfx.fp_len))
466 pfx.fp_proto = FIB_PROTOCOL_IP6;
467 vec_add1 (prefixs, pfx);
469 else if (unformat (line_input, "via %U %U weight %u",
470 unformat_ip4_address,
472 unformat_vnet_sw_interface, vnm,
473 &rpath.frp_sw_if_index, &rpath.frp_weight))
475 rpath.frp_proto = FIB_PROTOCOL_IP4;
476 vec_add1 (rpaths, rpath);
479 else if (unformat (line_input, "via %U %U weight %u",
480 unformat_ip6_address,
482 unformat_vnet_sw_interface, vnm,
483 &rpath.frp_sw_if_index, &rpath.frp_weight))
485 rpath.frp_proto = FIB_PROTOCOL_IP6;
486 vec_add1 (rpaths, rpath);
489 else if (unformat (line_input, "via %U %U",
490 unformat_ip4_address,
492 unformat_vnet_sw_interface, vnm,
493 &rpath.frp_sw_if_index))
495 rpath.frp_weight = 1;
496 rpath.frp_proto = FIB_PROTOCOL_IP4;
497 vec_add1 (rpaths, rpath);
500 else if (unformat (line_input, "via %U %U",
501 unformat_ip6_address,
503 unformat_vnet_sw_interface, vnm,
504 &rpath.frp_sw_if_index))
506 rpath.frp_weight = 1;
507 rpath.frp_proto = FIB_PROTOCOL_IP6;
508 vec_add1 (rpaths, rpath);
510 else if (unformat (line_input, "via %U next-hop-table %d",
511 unformat_ip4_address,
512 &rpath.frp_addr.ip4, &rpath.frp_fib_index))
514 rpath.frp_weight = 1;
515 rpath.frp_sw_if_index = ~0;
516 rpath.frp_proto = FIB_PROTOCOL_IP4;
517 vec_add1 (rpaths, rpath);
519 else if (unformat (line_input, "via %U next-hop-table %d",
520 unformat_ip6_address,
521 &rpath.frp_addr.ip6, &rpath.frp_fib_index))
523 rpath.frp_weight = 1;
524 rpath.frp_sw_if_index = ~0;
525 rpath.frp_proto = FIB_PROTOCOL_IP6;
526 vec_add1 (rpaths, rpath);
528 else if (unformat (line_input, "via %U",
529 unformat_ip4_address, &rpath.frp_addr.ip4))
532 * the recursive next-hops are by default in the same table
535 rpath.frp_fib_index = table_id;
536 rpath.frp_weight = 1;
537 rpath.frp_sw_if_index = ~0;
538 rpath.frp_proto = FIB_PROTOCOL_IP4;
539 vec_add1 (rpaths, rpath);
541 else if (unformat (line_input, "via %U",
542 unformat_ip6_address, &rpath.frp_addr.ip6))
544 rpath.frp_fib_index = table_id;
545 rpath.frp_weight = 1;
546 rpath.frp_sw_if_index = ~0;
547 rpath.frp_proto = FIB_PROTOCOL_IP6;
548 vec_add1 (rpaths, rpath);
550 else if (unformat (line_input,
551 "lookup in table %d", &rpath.frp_fib_index))
553 rpath.frp_proto = pfx.fp_proto;
554 rpath.frp_sw_if_index = ~0;
555 vec_add1 (rpaths, rpath);
557 else if (vec_len (prefixs) > 0 &&
558 unformat (line_input, "via %U",
559 unformat_vnet_sw_interface, vnm,
560 &rpath.frp_sw_if_index))
562 rpath.frp_weight = 1;
563 rpath.frp_proto = prefixs[0].fp_proto;
564 vec_add1 (rpaths, rpath);
566 else if (vec_len (prefixs) > 0 &&
567 unformat (line_input, "via %U",
568 unformat_dpo, &dpo, prefixs[0].fp_proto))
570 vec_add1 (dpos, dpo);
574 error = unformat_parse_error (line_input);
579 if (vec_len (prefixs) == 0)
582 clib_error_return (0, "expected ip4/ip6 destination address/length.");
586 if (!is_del && vec_len (rpaths) + vec_len (dpos) == 0)
588 error = clib_error_return (0, "expected paths.");
595 * if no table_id is passed we will manipulate the default
601 fib_index = fib_table_id_find_fib_index (prefixs[0].fp_proto, table_id);
605 error = clib_error_return (0, "Nonexistent table id %d", table_id);
610 for (i = 0; i < vec_len (prefixs); i++)
612 if (is_del && 0 == vec_len (rpaths))
614 fib_table_entry_delete (fib_index, &prefixs[i], FIB_SOURCE_CLI);
616 else if (!is_del && 1 == vec_len (dpos))
618 fib_table_entry_special_dpo_add (fib_index,
621 FIB_ENTRY_FLAG_EXCLUSIVE,
623 dpo_reset (&dpos[0]);
625 else if (vec_len (dpos) > 0)
628 clib_error_return (0,
629 "Load-balancing over multiple special adjacencies is unsupported");
632 else if (0 < vec_len (rpaths))
635 ip46_address_t dst = prefixs[i].fp_addr;
638 t[0] = vlib_time_now (vm);
639 incr = 1 << ((FIB_PROTOCOL_IP4 == prefixs[0].fp_proto ? 32 : 128) -
642 for (k = 0; k < n; k++)
644 for (j = 0; j < vec_len (rpaths); j++)
648 * the CLI parsing stored table Ids, swap to FIB indicies
650 fi = fib_table_id_find_fib_index (prefixs[i].fp_proto,
651 rpaths[i].frp_fib_index);
656 clib_error_return (0, "Via table %d does not exist",
657 rpaths[i].frp_fib_index);
660 rpaths[i].frp_fib_index = fi;
662 fib_prefix_t rpfx = {
663 .fp_len = prefixs[i].fp_len,
664 .fp_proto = prefixs[i].fp_proto,
669 fib_table_entry_path_remove2 (fib_index,
671 FIB_SOURCE_CLI, &rpaths[j]);
673 fib_table_entry_path_add2 (fib_index,
680 if (FIB_PROTOCOL_IP4 == prefixs[0].fp_proto)
683 clib_host_to_net_u32 (incr +
684 clib_net_to_host_u32 (dst.
689 int bucket = (incr < 64 ? 0 : 1);
690 dst.ip6.as_u64[bucket] =
691 clib_host_to_net_u64 (incr +
692 clib_net_to_host_u64 (dst.ip6.as_u64
697 t[1] = vlib_time_now (vm);
699 vlib_cli_output (vm, "%.6e routes/sec", count / (t[1] - t[0]));
703 error = clib_error_return (0, "Don't understand what you want...");
713 unformat_free (line_input);
718 VLIB_CLI_COMMAND (vlib_cli_ip_command, static) = {
720 .short_help = "Internet protocol (IP) commands",
725 VLIB_CLI_COMMAND (vlib_cli_ip6_command, static) = {
727 .short_help = "Internet protocol version 6 (IPv6) commands",
732 VLIB_CLI_COMMAND (vlib_cli_show_ip_command, static) = {
734 .short_help = "Internet protocol (IP) show commands",
739 VLIB_CLI_COMMAND (vlib_cli_show_ip6_command, static) = {
741 .short_help = "Internet protocol version 6 (IPv6) show commands",
746 * This command is used to add or delete IPv4 or IPv6 routes. All
747 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
748 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
749 * can be IPv4 or IPv6, but all must be of the same form in a single
750 * command. To display the current set of routes, use the commands
751 * '<em>show ip fib</em>' and '<em>show ip6 fib</em>'.
754 * Example of how to add a straight forward static route:
755 * @cliexcmd{ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
756 * Example of how to delete a straight forward static route:
757 * @cliexcmd{ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
758 * Mainly for route add/del performance testing, one can add or delete
759 * multiple routes by adding 'count N' to the previous item:
760 * @cliexcmd{ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0}
761 * Add multiple routes for the same destination to create equal-cost multipath:
762 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0}
763 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0}
764 * For unequal-cost multipath, specify the desired weights. This
765 * combination of weights results in 3/4 of the traffic following the
766 * second path, 1/4 following the first path:
767 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1}
768 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3}
769 * To add a route to a particular FIB table (VRF), use:
770 * @cliexcmd{ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0}
773 VLIB_CLI_COMMAND (ip_route_command, static) = {
775 .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>]",
776 .function = vnet_ip_route_cmd,
782 vnet_ip_mroute_cmd (vlib_main_t * vm,
783 unformat_input_t * main_input, vlib_cli_command_t * cmd)
785 unformat_input_t _line_input, *line_input = &_line_input;
786 clib_error_t *error = NULL;
787 fib_route_path_t rpath;
788 u32 table_id, is_del;
792 mfib_itf_flags_t iflags = 0;
793 mfib_entry_flags_t eflags = 0;
794 u32 gcount, scount, ss, gg, incr;
798 vnm = vnet_get_main ();
801 memset (&pfx, 0, sizeof (pfx));
802 memset (&rpath, 0, sizeof (rpath));
803 rpath.frp_sw_if_index = ~0;
805 /* Get a line of input. */
806 if (!unformat_user (main_input, unformat_line_input, line_input))
809 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
811 if (unformat (line_input, "table %d", &table_id))
813 else if (unformat (line_input, "del"))
815 else if (unformat (line_input, "add"))
817 else if (unformat (line_input, "scount %d", &scount))
819 else if (unformat (line_input, "gcount %d", &gcount))
821 else if (unformat (line_input, "%U %U",
822 unformat_ip4_address,
823 &pfx.fp_src_addr.ip4,
824 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
826 pfx.fp_proto = FIB_PROTOCOL_IP4;
829 else if (unformat (line_input, "%U %U",
830 unformat_ip6_address,
831 &pfx.fp_src_addr.ip6,
832 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
834 pfx.fp_proto = FIB_PROTOCOL_IP6;
837 else if (unformat (line_input, "%U/%d",
838 unformat_ip4_address,
839 &pfx.fp_grp_addr.ip4, &pfx.fp_len))
841 pfx.fp_proto = FIB_PROTOCOL_IP4;
843 else if (unformat (line_input, "%U/%d",
844 unformat_ip6_address,
845 &pfx.fp_grp_addr.ip6, &pfx.fp_len))
847 pfx.fp_proto = FIB_PROTOCOL_IP6;
849 else if (unformat (line_input, "%U",
850 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
852 memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
853 pfx.fp_proto = FIB_PROTOCOL_IP4;
856 else if (unformat (line_input, "%U",
857 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
859 memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
860 pfx.fp_proto = FIB_PROTOCOL_IP6;
863 else if (unformat (line_input, "via %U",
864 unformat_vnet_sw_interface, vnm,
865 &rpath.frp_sw_if_index))
867 rpath.frp_weight = 1;
868 rpath.frp_proto = FIB_PROTOCOL_IP4;
870 else if (unformat (line_input, "%U", unformat_mfib_itf_flags, &iflags))
872 else if (unformat (line_input, "%U",
873 unformat_mfib_entry_flags, &eflags))
877 error = unformat_parse_error (line_input);
885 * if no table_id is passed we will manipulate the default
891 fib_index = mfib_table_find (pfx.fp_proto, table_id);
895 error = clib_error_return (0, "Nonexistent table id %d", table_id);
900 timet[0] = vlib_time_now (vm);
902 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
904 incr = 1 << (32 - (pfx.fp_len % 32));
908 incr = 1 << (128 - (pfx.fp_len % 128));
911 for (ss = 0; ss < scount; ss++)
913 for (gg = 0; gg < gcount; gg++)
915 if (is_del && 0 == rpath.frp_weight)
917 /* no path provided => route delete */
918 mfib_table_entry_delete (fib_index, &pfx, MFIB_SOURCE_CLI);
922 mfib_table_entry_update (fib_index, &pfx, MFIB_SOURCE_CLI,
928 mfib_table_entry_path_remove (fib_index,
929 &pfx, MFIB_SOURCE_CLI, &rpath);
931 mfib_table_entry_path_update (fib_index,
932 &pfx, MFIB_SOURCE_CLI, &rpath,
936 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
938 pfx.fp_grp_addr.ip4.as_u32 =
939 clib_host_to_net_u32 (incr +
940 clib_net_to_host_u32 (pfx.
946 int bucket = (incr < 64 ? 0 : 1);
947 pfx.fp_grp_addr.ip6.as_u64[bucket] =
948 clib_host_to_net_u64 (incr +
949 clib_net_to_host_u64 (pfx.
950 fp_grp_addr.ip6.as_u64
955 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
957 pfx.fp_src_addr.ip4.as_u32 =
958 clib_host_to_net_u32 (1 +
959 clib_net_to_host_u32 (pfx.fp_src_addr.
964 pfx.fp_src_addr.ip6.as_u64[1] =
965 clib_host_to_net_u64 (1 +
966 clib_net_to_host_u64 (pfx.fp_src_addr.
971 timet[1] = vlib_time_now (vm);
973 if (scount > 1 || gcount > 1)
974 vlib_cli_output (vm, "%.6e routes/sec",
975 (scount * gcount) / (timet[1] - timet[0]));
978 unformat_free (line_input);
984 * This command is used to add or delete IPv4 or IPv6 multicastroutes. All
985 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
986 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
987 * can be IPv4 or IPv6, but all must be of the same form in a single
988 * command. To display the current set of routes, use the commands
989 * '<em>show ip mfib</em>' and '<em>show ip6 mfib</em>'.
990 * The full set of support flags for interfaces and route is shown via;
991 * '<em>show mfib route flags</em>' and '<em>show mfib itf flags</em>'
994 * Example of how to add a forwarding interface to a route (and create the
995 * route if it does not exist)
996 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/0 Forward}
997 * Example of how to add an accepting interface to a route (and create the
998 * route if it does not exist)
999 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/1 Accept}
1000 * Example of changing the route's flags to send signals via the API
1001 * @cliexcmd{ip mroute add 232.1.1.1 Signal}
1005 VLIB_CLI_COMMAND (ip_mroute_command, static) =
1007 .path = "ip mroute",
1008 .short_help = "ip mroute [add|del] <dst-ip-addr>/<width> [table <table-id>] [via <next-hop-ip-addr> [<interface>],",
1009 .function = vnet_ip_mroute_cmd,
1015 * The next two routines address a longstanding script hemorrhoid.
1016 * Probing a v4 or v6 neighbor needs to appear to be synchronous,
1017 * or dependent route-adds will simply fail.
1019 static clib_error_t *
1020 ip6_probe_neighbor_wait (vlib_main_t * vm, ip6_address_t * a, u32 sw_if_index,
1023 vnet_main_t *vnm = vnet_get_main ();
1028 uword *event_data = 0;
1030 ASSERT (vlib_in_process_context (vm));
1032 if (retry_count > 0)
1033 vnet_register_ip6_neighbor_resolution_event
1034 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1035 1 /* event */ , 0 /* data */ );
1037 for (i = 0; i < retry_count; i++)
1039 /* The interface may be down, etc. */
1040 e = ip6_probe_neighbor (vm, a, sw_if_index);
1045 vlib_process_wait_for_event_or_clock (vm, 1.0);
1046 event_type = vlib_process_get_events (vm, &event_data);
1049 case 1: /* resolved... */
1050 vlib_cli_output (vm, "Resolved %U", format_ip6_address, a);
1054 case ~0: /* timeout */
1058 clib_warning ("unknown event_type %d", event_type);
1060 vec_reset_length (event_data);
1066 return clib_error_return (0, "Resolution failed for %U",
1067 format_ip6_address, a);
1071 static clib_error_t *
1072 ip4_probe_neighbor_wait (vlib_main_t * vm, ip4_address_t * a, u32 sw_if_index,
1075 vnet_main_t *vnm = vnet_get_main ();
1080 uword *event_data = 0;
1082 ASSERT (vlib_in_process_context (vm));
1084 if (retry_count > 0)
1085 vnet_register_ip4_arp_resolution_event
1086 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1087 1 /* event */ , 0 /* data */ );
1089 for (i = 0; i < retry_count; i++)
1091 /* The interface may be down, etc. */
1092 e = ip4_probe_neighbor (vm, a, sw_if_index);
1097 vlib_process_wait_for_event_or_clock (vm, 1.0);
1098 event_type = vlib_process_get_events (vm, &event_data);
1101 case 1: /* resolved... */
1102 vlib_cli_output (vm, "Resolved %U", format_ip4_address, a);
1106 case ~0: /* timeout */
1110 clib_warning ("unknown event_type %d", event_type);
1112 vec_reset_length (event_data);
1117 vec_reset_length (event_data);
1120 return clib_error_return (0, "Resolution failed for %U",
1121 format_ip4_address, a);
1125 static clib_error_t *
1126 probe_neighbor_address (vlib_main_t * vm,
1127 unformat_input_t * input, vlib_cli_command_t * cmd)
1129 vnet_main_t *vnm = vnet_get_main ();
1130 unformat_input_t _line_input, *line_input = &_line_input;
1133 clib_error_t *error = 0;
1134 u32 sw_if_index = ~0;
1135 int retry_count = 3;
1137 int address_set = 0;
1139 /* Get a line of input. */
1140 if (!unformat_user (input, unformat_line_input, line_input))
1143 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1145 if (unformat_user (line_input, unformat_vnet_sw_interface, vnm,
1148 else if (unformat (line_input, "retry %d", &retry_count))
1151 else if (unformat (line_input, "%U", unformat_ip4_address, &a4))
1153 else if (unformat (line_input, "%U", unformat_ip6_address, &a6))
1160 error = clib_error_return (0, "unknown input '%U'",
1161 format_unformat_error, line_input);
1166 if (sw_if_index == ~0)
1168 error = clib_error_return (0, "Interface required, not set.");
1171 if (address_set == 0)
1173 error = clib_error_return (0, "ip address required, not set.");
1176 if (address_set > 1)
1178 error = clib_error_return (0, "Multiple ip addresses not supported.");
1183 error = ip4_probe_neighbor_wait (vm, &a4, sw_if_index, retry_count);
1185 error = ip6_probe_neighbor_wait (vm, &a6, sw_if_index, retry_count);
1188 unformat_free (line_input);
1194 * The '<em>ip probe-neighbor</em>' command ARPs for IPv4 addresses or
1195 * attempts IPv6 neighbor discovery depending on the supplied IP address
1198 * @note This command will not immediately affect the indicated FIB; it
1199 * is not suitable for use in establishing a FIB entry prior to adding
1200 * recursive FIB entries. As in: don't use it in a script to probe a
1201 * gateway prior to adding a default route. It won't work. Instead,
1202 * configure a static ARP cache entry [see '<em>set ip arp</em>'], or
1203 * a static IPv6 neighbor [see '<em>set ip6 neighbor</em>'].
1206 * Example of probe for an IPv4 address:
1207 * @cliexcmd{ip probe-neighbor GigabitEthernet2/0/0 172.16.1.2}
1210 VLIB_CLI_COMMAND (ip_probe_neighbor_command, static) = {
1211 .path = "ip probe-neighbor",
1212 .function = probe_neighbor_address,
1213 .short_help = "ip probe-neighbor <interface> <ip4-addr> | <ip6-addr> [retry nn]",
1219 * fd.io coding-style-patch-verification: ON
1222 * eval: (c-set-style "gnu")