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)) ||
77 (address_length == 0) ||
78 (lm->is_ip6 && address_length > 128) ||
79 (!lm->is_ip6 && address_length > 32))
81 vnm->api_errno = VNET_API_ERROR_ADDRESS_LENGTH_MISMATCH;
82 return clib_error_create
83 ("%U wrong length (expected %d) for interface %U",
84 lm->format_address_and_length, addr_fib,
85 address_length, a ? a->address_length : -1,
86 format_vnet_sw_if_index_name, vnm, sw_if_index);
93 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
94 vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
95 return clib_error_create ("%U not found for interface %U",
96 lm->format_address_and_length,
97 addr_fib, address_length,
98 format_vnet_sw_interface_name, vnm, si);
101 if (a->prev_this_sw_interface != ~0)
104 pool_elt_at_index (lm->if_address_pool,
105 a->prev_this_sw_interface);
106 prev->next_this_sw_interface = a->next_this_sw_interface;
108 if (a->next_this_sw_interface != ~0)
111 pool_elt_at_index (lm->if_address_pool,
112 a->next_this_sw_interface);
113 next->prev_this_sw_interface = a->prev_this_sw_interface;
115 if (a->prev_this_sw_interface == ~0)
116 lm->if_address_pool_index_by_sw_if_index[sw_if_index] =
117 a->next_this_sw_interface;
120 if ((a->next_this_sw_interface == ~0)
121 && (a->prev_this_sw_interface == ~0))
122 lm->if_address_pool_index_by_sw_if_index[sw_if_index] = ~0;
124 mhash_unset (&lm->address_to_if_address_index, addr_fib,
126 pool_put (lm->if_address_pool, a);
128 if (result_if_address_index)
129 *result_if_address_index = ~0;
134 u32 pi; /* previous index */
136 u32 hi; /* head index */
138 pool_get (lm->if_address_pool, a);
139 memset (a, ~0, sizeof (a[0]));
140 ai = a - lm->if_address_pool;
142 hi = pi = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
144 while (pi != (u32) ~ 0)
146 prev = pool_elt_at_index (lm->if_address_pool, pi);
147 pi = prev->next_this_sw_interface;
149 pi = prev ? prev - lm->if_address_pool : (u32) ~ 0;
151 a->address_key = mhash_set (&lm->address_to_if_address_index,
152 addr_fib, ai, /* old_value */ 0);
153 a->address_length = address_length;
154 a->sw_if_index = sw_if_index;
156 a->prev_this_sw_interface = pi;
157 a->next_this_sw_interface = ~0;
159 prev->next_this_sw_interface = ai;
161 lm->if_address_pool_index_by_sw_if_index[sw_if_index] =
162 (hi != ~0) ? hi : ai;
163 if (result_if_address_index)
164 *result_if_address_index = ai;
168 if (result_if_address_index)
169 *result_if_address_index = a - lm->if_address_pool;
173 return /* no error */ 0;
176 static clib_error_t *
177 ip_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
179 vec_validate_init_empty (ip4_main.
180 lookup_main.if_address_pool_index_by_sw_if_index,
182 vec_validate_init_empty (ip6_main.
183 lookup_main.if_address_pool_index_by_sw_if_index,
189 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip_sw_interface_add_del);
192 ip_lookup_init (ip_lookup_main_t * lm, u32 is_ip6)
194 /* Preallocate three "special" adjacencies */
195 lm->adjacency_heap = adj_pool;
197 if (!lm->fib_result_n_bytes)
198 lm->fib_result_n_bytes = sizeof (uword);
203 lm->format_address_and_length = format_ip6_address_and_length;
204 mhash_init (&lm->address_to_if_address_index, sizeof (uword),
205 sizeof (ip6_address_fib_t));
209 lm->format_address_and_length = format_ip4_address_and_length;
210 mhash_init (&lm->address_to_if_address_index, sizeof (uword),
211 sizeof (ip4_address_fib_t));
217 /* Setup all IP protocols to be punted and builtin-unknown. */
218 for (i = 0; i < 256; i++)
220 lm->local_next_by_ip_protocol[i] = IP_LOCAL_NEXT_PUNT;
221 lm->builtin_protocol_by_ip_protocol[i] = IP_BUILTIN_PROTOCOL_UNKNOWN;
224 lm->local_next_by_ip_protocol[IP_PROTOCOL_UDP] = IP_LOCAL_NEXT_UDP_LOOKUP;
225 lm->local_next_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
226 IP_PROTOCOL_ICMP] = IP_LOCAL_NEXT_ICMP;
227 lm->builtin_protocol_by_ip_protocol[IP_PROTOCOL_UDP] =
228 IP_BUILTIN_PROTOCOL_UDP;
229 lm->builtin_protocol_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
231 IP_BUILTIN_PROTOCOL_ICMP;
236 format_ip_flow_hash_config (u8 * s, va_list * args)
238 flow_hash_config_t flow_hash_config = va_arg (*args, u32);
240 #define _(n,v) if (flow_hash_config & v) s = format (s, "%s ", #n);
241 foreach_flow_hash_bit;
248 format_ip_lookup_next (u8 * s, va_list * args)
250 /* int promotion of ip_lookup_next_t */
251 ip_lookup_next_t n = va_arg (*args, int);
257 s = format (s, "unknown %d", n);
260 case IP_LOOKUP_NEXT_DROP:
263 case IP_LOOKUP_NEXT_PUNT:
266 case IP_LOOKUP_NEXT_ARP:
269 case IP_LOOKUP_NEXT_MIDCHAIN:
272 case IP_LOOKUP_NEXT_GLEAN:
275 case IP_LOOKUP_NEXT_MCAST:
278 case IP_LOOKUP_NEXT_REWRITE:
283 vec_add (s, t, strlen (t));
289 format_ip_adjacency_packet_data (u8 * s, va_list * args)
291 u32 adj_index = va_arg (*args, u32);
292 u8 *packet_data = va_arg (*args, u8 *);
293 u32 n_packet_data_bytes = va_arg (*args, u32);
294 ip_adjacency_t *adj = adj_get (adj_index);
296 switch (adj->lookup_next_index)
298 case IP_LOOKUP_NEXT_REWRITE:
299 case IP_LOOKUP_NEXT_MCAST:
301 format (s, "%U", format_hex_bytes, packet_data, n_packet_data_bytes);
312 unformat_dpo (unformat_input_t * input, va_list * args)
314 dpo_id_t *dpo = va_arg (*args, dpo_id_t *);
315 fib_protocol_t fp = va_arg (*args, int);
318 proto = fib_proto_to_dpo (fp);
320 if (unformat (input, "drop"))
321 dpo_copy (dpo, drop_dpo_get (proto));
322 else if (unformat (input, "punt"))
323 dpo_copy (dpo, punt_dpo_get (proto));
324 else if (unformat (input, "local"))
325 receive_dpo_add_or_lock (proto, ~0, NULL, dpo);
326 else if (unformat (input, "null-send-unreach"))
327 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_UNREACH, dpo);
328 else if (unformat (input, "null-send-prohibit"))
329 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_PROHIBIT, dpo);
330 else if (unformat (input, "null"))
331 ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_NONE, dpo);
332 else if (unformat (input, "classify"))
334 u32 classify_table_index;
336 if (!unformat (input, "%d", &classify_table_index))
338 clib_warning ("classify adj must specify table index");
342 dpo_set (dpo, DPO_CLASSIFY, proto,
343 classify_dpo_create (proto, classify_table_index));
351 const ip46_address_t zero_addr = {
357 fib_table_id_find_fib_index (fib_protocol_t proto, u32 table_id)
359 ip4_main_t *im4 = &ip4_main;
360 ip6_main_t *im6 = &ip6_main;
365 case FIB_PROTOCOL_IP4:
366 p = hash_get (im4->fib_index_by_table_id, table_id);
368 case FIB_PROTOCOL_IP6:
369 p = hash_get (im6->fib_index_by_table_id, table_id);
383 vnet_ip_route_cmd (vlib_main_t * vm,
384 unformat_input_t * main_input, vlib_cli_command_t * cmd)
386 unformat_input_t _line_input, *line_input = &_line_input;
387 fib_route_path_t *rpaths = NULL, rpath;
388 dpo_id_t dpo = DPO_INVALID, *dpos = NULL;
389 fib_prefix_t *prefixs = NULL, pfx;
390 mpls_label_t out_label, via_label;
391 clib_error_t *error = NULL;
392 u32 table_id, is_del;
398 vnm = vnet_get_main ();
402 memset (&pfx, 0, sizeof (pfx));
403 out_label = via_label = MPLS_LABEL_INVALID;
405 /* Get a line of input. */
406 if (!unformat_user (main_input, unformat_line_input, line_input))
409 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
411 memset (&rpath, 0, sizeof (rpath));
413 if (unformat (line_input, "table %d", &table_id))
415 else if (unformat (line_input, "del"))
417 else if (unformat (line_input, "add"))
419 else if (unformat (line_input, "resolve-via-host"))
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_HOST;
429 else if (unformat (line_input, "resolve-via-attached"))
431 if (vec_len (rpaths) == 0)
433 error = clib_error_return (0, "Paths then flags");
436 rpaths[vec_len (rpaths) - 1].frp_flags |=
437 FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
439 else if (unformat (line_input, "out-label %U",
440 unformat_mpls_unicast_label, &out_label))
442 if (vec_len (rpaths) == 0)
444 error = clib_error_return (0, "Paths then labels");
447 vec_add1 (rpaths[vec_len (rpaths) - 1].frp_label_stack, out_label);
449 else if (unformat (line_input, "via-label %U",
450 unformat_mpls_unicast_label, &rpath.frp_local_label))
452 rpath.frp_weight = 1;
453 rpath.frp_proto = FIB_PROTOCOL_MPLS;
454 rpath.frp_sw_if_index = ~0;
455 vec_add1 (rpaths, rpath);
457 else if (unformat (line_input, "count %f", &count))
460 else if (unformat (line_input, "%U/%d",
461 unformat_ip4_address, &pfx.fp_addr.ip4, &pfx.fp_len))
463 pfx.fp_proto = FIB_PROTOCOL_IP4;
464 vec_add1 (prefixs, pfx);
466 else if (unformat (line_input, "%U/%d",
467 unformat_ip6_address, &pfx.fp_addr.ip6, &pfx.fp_len))
469 pfx.fp_proto = FIB_PROTOCOL_IP6;
470 vec_add1 (prefixs, pfx);
472 else if (unformat (line_input, "via %U %U weight %u",
473 unformat_ip4_address,
475 unformat_vnet_sw_interface, vnm,
476 &rpath.frp_sw_if_index, &rpath.frp_weight))
478 rpath.frp_proto = FIB_PROTOCOL_IP4;
479 vec_add1 (rpaths, rpath);
482 else if (unformat (line_input, "via %U %U weight %u",
483 unformat_ip6_address,
485 unformat_vnet_sw_interface, vnm,
486 &rpath.frp_sw_if_index, &rpath.frp_weight))
488 rpath.frp_proto = FIB_PROTOCOL_IP6;
489 vec_add1 (rpaths, rpath);
492 else if (unformat (line_input, "via %U %U",
493 unformat_ip4_address,
495 unformat_vnet_sw_interface, vnm,
496 &rpath.frp_sw_if_index))
498 rpath.frp_weight = 1;
499 rpath.frp_proto = FIB_PROTOCOL_IP4;
500 vec_add1 (rpaths, rpath);
503 else if (unformat (line_input, "via %U %U",
504 unformat_ip6_address,
506 unformat_vnet_sw_interface, vnm,
507 &rpath.frp_sw_if_index))
509 rpath.frp_weight = 1;
510 rpath.frp_proto = FIB_PROTOCOL_IP6;
511 vec_add1 (rpaths, rpath);
513 else if (unformat (line_input, "via %U next-hop-table %d",
514 unformat_ip4_address,
515 &rpath.frp_addr.ip4, &rpath.frp_fib_index))
517 rpath.frp_weight = 1;
518 rpath.frp_sw_if_index = ~0;
519 rpath.frp_proto = FIB_PROTOCOL_IP4;
520 vec_add1 (rpaths, rpath);
522 else if (unformat (line_input, "via %U next-hop-table %d",
523 unformat_ip6_address,
524 &rpath.frp_addr.ip6, &rpath.frp_fib_index))
526 rpath.frp_weight = 1;
527 rpath.frp_sw_if_index = ~0;
528 rpath.frp_proto = FIB_PROTOCOL_IP6;
529 vec_add1 (rpaths, rpath);
531 else if (unformat (line_input, "via %U",
532 unformat_ip4_address, &rpath.frp_addr.ip4))
535 * the recursive next-hops are by default in the same table
538 rpath.frp_fib_index = table_id;
539 rpath.frp_weight = 1;
540 rpath.frp_sw_if_index = ~0;
541 rpath.frp_proto = FIB_PROTOCOL_IP4;
542 vec_add1 (rpaths, rpath);
544 else if (unformat (line_input, "via %U",
545 unformat_ip6_address, &rpath.frp_addr.ip6))
547 rpath.frp_fib_index = table_id;
548 rpath.frp_weight = 1;
549 rpath.frp_sw_if_index = ~0;
550 rpath.frp_proto = FIB_PROTOCOL_IP6;
551 vec_add1 (rpaths, rpath);
553 else if (unformat (line_input,
554 "lookup in table %d", &rpath.frp_fib_index))
556 rpath.frp_proto = pfx.fp_proto;
557 rpath.frp_sw_if_index = ~0;
558 vec_add1 (rpaths, rpath);
560 else if (vec_len (prefixs) > 0 &&
561 unformat (line_input, "via %U",
562 unformat_vnet_sw_interface, vnm,
563 &rpath.frp_sw_if_index))
565 rpath.frp_weight = 1;
566 rpath.frp_proto = prefixs[0].fp_proto;
567 vec_add1 (rpaths, rpath);
569 else if (vec_len (prefixs) > 0 &&
570 unformat (line_input, "via %U",
571 unformat_dpo, &dpo, prefixs[0].fp_proto))
573 vec_add1 (dpos, dpo);
577 error = unformat_parse_error (line_input);
582 if (vec_len (prefixs) == 0)
585 clib_error_return (0, "expected ip4/ip6 destination address/length.");
589 if (!is_del && vec_len (rpaths) + vec_len (dpos) == 0)
591 error = clib_error_return (0, "expected paths.");
598 * if no table_id is passed we will manipulate the default
604 fib_index = fib_table_id_find_fib_index (prefixs[0].fp_proto, table_id);
608 error = clib_error_return (0, "Nonexistent table id %d", table_id);
613 for (i = 0; i < vec_len (prefixs); i++)
615 if (is_del && 0 == vec_len (rpaths))
617 fib_table_entry_delete (fib_index, &prefixs[i], FIB_SOURCE_CLI);
619 else if (!is_del && 1 == vec_len (dpos))
621 fib_table_entry_special_dpo_add (fib_index,
624 FIB_ENTRY_FLAG_EXCLUSIVE,
626 dpo_reset (&dpos[0]);
628 else if (vec_len (dpos) > 0)
631 clib_error_return (0,
632 "Load-balancing over multiple special adjacencies is unsupported");
635 else if (0 < vec_len (rpaths))
638 ip46_address_t dst = prefixs[i].fp_addr;
641 t[0] = vlib_time_now (vm);
642 incr = 1 << ((FIB_PROTOCOL_IP4 == prefixs[0].fp_proto ? 32 : 128) -
645 for (k = 0; k < n; k++)
647 for (j = 0; j < vec_len (rpaths); j++)
651 * the CLI parsing stored table Ids, swap to FIB indicies
653 fi = fib_table_id_find_fib_index (prefixs[i].fp_proto,
654 rpaths[i].frp_fib_index);
659 clib_error_return (0, "Via table %d does not exist",
660 rpaths[i].frp_fib_index);
663 rpaths[i].frp_fib_index = fi;
665 fib_prefix_t rpfx = {
666 .fp_len = prefixs[i].fp_len,
667 .fp_proto = prefixs[i].fp_proto,
672 fib_table_entry_path_remove2 (fib_index,
674 FIB_SOURCE_CLI, &rpaths[j]);
676 fib_table_entry_path_add2 (fib_index,
683 if (FIB_PROTOCOL_IP4 == prefixs[0].fp_proto)
686 clib_host_to_net_u32 (incr +
687 clib_net_to_host_u32 (dst.
692 int bucket = (incr < 64 ? 0 : 1);
693 dst.ip6.as_u64[bucket] =
694 clib_host_to_net_u64 (incr +
695 clib_net_to_host_u64 (dst.ip6.as_u64
700 t[1] = vlib_time_now (vm);
702 vlib_cli_output (vm, "%.6e routes/sec", count / (t[1] - t[0]));
706 error = clib_error_return (0, "Don't understand what you want...");
716 unformat_free (line_input);
721 VLIB_CLI_COMMAND (vlib_cli_ip_command, static) = {
723 .short_help = "Internet protocol (IP) commands",
728 VLIB_CLI_COMMAND (vlib_cli_ip6_command, static) = {
730 .short_help = "Internet protocol version 6 (IPv6) commands",
735 VLIB_CLI_COMMAND (vlib_cli_show_ip_command, static) = {
737 .short_help = "Internet protocol (IP) show commands",
742 VLIB_CLI_COMMAND (vlib_cli_show_ip6_command, static) = {
744 .short_help = "Internet protocol version 6 (IPv6) show commands",
749 * This command is used to add or delete IPv4 or IPv6 routes. All
750 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
751 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
752 * can be IPv4 or IPv6, but all must be of the same form in a single
753 * command. To display the current set of routes, use the commands
754 * '<em>show ip fib</em>' and '<em>show ip6 fib</em>'.
757 * Example of how to add a straight forward static route:
758 * @cliexcmd{ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
759 * Example of how to delete a straight forward static route:
760 * @cliexcmd{ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
761 * Mainly for route add/del performance testing, one can add or delete
762 * multiple routes by adding 'count N' to the previous item:
763 * @cliexcmd{ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0}
764 * Add multiple routes for the same destination to create equal-cost multipath:
765 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0}
766 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0}
767 * For unequal-cost multipath, specify the desired weights. This
768 * combination of weights results in 3/4 of the traffic following the
769 * second path, 1/4 following the first path:
770 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1}
771 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3}
772 * To add a route to a particular FIB table (VRF), use:
773 * @cliexcmd{ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0}
776 VLIB_CLI_COMMAND (ip_route_command, static) = {
778 .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>]",
779 .function = vnet_ip_route_cmd,
785 vnet_ip_mroute_cmd (vlib_main_t * vm,
786 unformat_input_t * main_input, vlib_cli_command_t * cmd)
788 unformat_input_t _line_input, *line_input = &_line_input;
789 clib_error_t *error = NULL;
790 fib_route_path_t rpath;
791 u32 table_id, is_del;
795 mfib_itf_flags_t iflags = 0;
796 mfib_entry_flags_t eflags = 0;
797 u32 gcount, scount, ss, gg, incr;
801 vnm = vnet_get_main ();
804 memset (&pfx, 0, sizeof (pfx));
805 memset (&rpath, 0, sizeof (rpath));
806 rpath.frp_sw_if_index = ~0;
808 /* Get a line of input. */
809 if (!unformat_user (main_input, unformat_line_input, line_input))
812 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
814 if (unformat (line_input, "table %d", &table_id))
816 else if (unformat (line_input, "del"))
818 else if (unformat (line_input, "add"))
820 else if (unformat (line_input, "scount %d", &scount))
822 else if (unformat (line_input, "gcount %d", &gcount))
824 else if (unformat (line_input, "%U %U",
825 unformat_ip4_address,
826 &pfx.fp_src_addr.ip4,
827 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
829 pfx.fp_proto = FIB_PROTOCOL_IP4;
832 else if (unformat (line_input, "%U %U",
833 unformat_ip6_address,
834 &pfx.fp_src_addr.ip6,
835 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
837 pfx.fp_proto = FIB_PROTOCOL_IP6;
840 else if (unformat (line_input, "%U/%d",
841 unformat_ip4_address,
842 &pfx.fp_grp_addr.ip4, &pfx.fp_len))
844 pfx.fp_proto = FIB_PROTOCOL_IP4;
846 else if (unformat (line_input, "%U/%d",
847 unformat_ip6_address,
848 &pfx.fp_grp_addr.ip6, &pfx.fp_len))
850 pfx.fp_proto = FIB_PROTOCOL_IP6;
852 else if (unformat (line_input, "%U",
853 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
855 memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
856 pfx.fp_proto = FIB_PROTOCOL_IP4;
859 else if (unformat (line_input, "%U",
860 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
862 memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
863 pfx.fp_proto = FIB_PROTOCOL_IP6;
866 else if (unformat (line_input, "via %U",
867 unformat_vnet_sw_interface, vnm,
868 &rpath.frp_sw_if_index))
870 rpath.frp_weight = 1;
871 rpath.frp_proto = FIB_PROTOCOL_IP4;
873 else if (unformat (line_input, "%U", unformat_mfib_itf_flags, &iflags))
875 else if (unformat (line_input, "%U",
876 unformat_mfib_entry_flags, &eflags))
880 error = unformat_parse_error (line_input);
888 * if no table_id is passed we will manipulate the default
894 fib_index = mfib_table_find (pfx.fp_proto, table_id);
898 error = clib_error_return (0, "Nonexistent table id %d", table_id);
903 timet[0] = vlib_time_now (vm);
905 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
907 incr = 1 << (32 - (pfx.fp_len % 32));
911 incr = 1 << (128 - (pfx.fp_len % 128));
914 for (ss = 0; ss < scount; ss++)
916 for (gg = 0; gg < gcount; gg++)
918 if (is_del && 0 == rpath.frp_weight)
920 /* no path provided => route delete */
921 mfib_table_entry_delete (fib_index, &pfx, MFIB_SOURCE_CLI);
925 mfib_table_entry_update (fib_index, &pfx, MFIB_SOURCE_CLI,
931 mfib_table_entry_path_remove (fib_index,
932 &pfx, MFIB_SOURCE_CLI, &rpath);
934 mfib_table_entry_path_update (fib_index,
935 &pfx, MFIB_SOURCE_CLI, &rpath,
939 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
941 pfx.fp_grp_addr.ip4.as_u32 =
942 clib_host_to_net_u32 (incr +
943 clib_net_to_host_u32 (pfx.
949 int bucket = (incr < 64 ? 0 : 1);
950 pfx.fp_grp_addr.ip6.as_u64[bucket] =
951 clib_host_to_net_u64 (incr +
952 clib_net_to_host_u64 (pfx.
953 fp_grp_addr.ip6.as_u64
958 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
960 pfx.fp_src_addr.ip4.as_u32 =
961 clib_host_to_net_u32 (1 +
962 clib_net_to_host_u32 (pfx.fp_src_addr.
967 pfx.fp_src_addr.ip6.as_u64[1] =
968 clib_host_to_net_u64 (1 +
969 clib_net_to_host_u64 (pfx.fp_src_addr.
974 timet[1] = vlib_time_now (vm);
976 if (scount > 1 || gcount > 1)
977 vlib_cli_output (vm, "%.6e routes/sec",
978 (scount * gcount) / (timet[1] - timet[0]));
981 unformat_free (line_input);
987 * This command is used to add or delete IPv4 or IPv6 multicastroutes. All
988 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
989 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
990 * can be IPv4 or IPv6, but all must be of the same form in a single
991 * command. To display the current set of routes, use the commands
992 * '<em>show ip mfib</em>' and '<em>show ip6 mfib</em>'.
993 * The full set of support flags for interfaces and route is shown via;
994 * '<em>show mfib route flags</em>' and '<em>show mfib itf flags</em>'
997 * Example of how to add a forwarding interface to a route (and create the
998 * route if it does not exist)
999 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/0 Forward}
1000 * Example of how to add an accepting interface to a route (and create the
1001 * route if it does not exist)
1002 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/1 Accept}
1003 * Example of changing the route's flags to send signals via the API
1004 * @cliexcmd{ip mroute add 232.1.1.1 Signal}
1008 VLIB_CLI_COMMAND (ip_mroute_command, static) =
1010 .path = "ip mroute",
1011 .short_help = "ip mroute [add|del] <dst-ip-addr>/<width> [table <table-id>] [via <next-hop-ip-addr> [<interface>],",
1012 .function = vnet_ip_mroute_cmd,
1018 * The next two routines address a longstanding script hemorrhoid.
1019 * Probing a v4 or v6 neighbor needs to appear to be synchronous,
1020 * or dependent route-adds will simply fail.
1022 static clib_error_t *
1023 ip6_probe_neighbor_wait (vlib_main_t * vm, ip6_address_t * a, u32 sw_if_index,
1026 vnet_main_t *vnm = vnet_get_main ();
1031 uword *event_data = 0;
1033 ASSERT (vlib_in_process_context (vm));
1035 if (retry_count > 0)
1036 vnet_register_ip6_neighbor_resolution_event
1037 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1038 1 /* event */ , 0 /* data */ );
1040 for (i = 0; i < retry_count; i++)
1042 /* The interface may be down, etc. */
1043 e = ip6_probe_neighbor (vm, a, sw_if_index);
1048 vlib_process_wait_for_event_or_clock (vm, 1.0);
1049 event_type = vlib_process_get_events (vm, &event_data);
1052 case 1: /* resolved... */
1053 vlib_cli_output (vm, "Resolved %U", format_ip6_address, a);
1057 case ~0: /* timeout */
1061 clib_warning ("unknown event_type %d", event_type);
1063 vec_reset_length (event_data);
1069 return clib_error_return (0, "Resolution failed for %U",
1070 format_ip6_address, a);
1074 static clib_error_t *
1075 ip4_probe_neighbor_wait (vlib_main_t * vm, ip4_address_t * a, u32 sw_if_index,
1078 vnet_main_t *vnm = vnet_get_main ();
1083 uword *event_data = 0;
1085 ASSERT (vlib_in_process_context (vm));
1087 if (retry_count > 0)
1088 vnet_register_ip4_arp_resolution_event
1089 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1090 1 /* event */ , 0 /* data */ );
1092 for (i = 0; i < retry_count; i++)
1094 /* The interface may be down, etc. */
1095 e = ip4_probe_neighbor (vm, a, sw_if_index);
1100 vlib_process_wait_for_event_or_clock (vm, 1.0);
1101 event_type = vlib_process_get_events (vm, &event_data);
1104 case 1: /* resolved... */
1105 vlib_cli_output (vm, "Resolved %U", format_ip4_address, a);
1109 case ~0: /* timeout */
1113 clib_warning ("unknown event_type %d", event_type);
1115 vec_reset_length (event_data);
1120 vec_reset_length (event_data);
1123 return clib_error_return (0, "Resolution failed for %U",
1124 format_ip4_address, a);
1128 static clib_error_t *
1129 probe_neighbor_address (vlib_main_t * vm,
1130 unformat_input_t * input, vlib_cli_command_t * cmd)
1132 vnet_main_t *vnm = vnet_get_main ();
1133 unformat_input_t _line_input, *line_input = &_line_input;
1136 clib_error_t *error = 0;
1137 u32 sw_if_index = ~0;
1138 int retry_count = 3;
1140 int address_set = 0;
1142 /* Get a line of input. */
1143 if (!unformat_user (input, unformat_line_input, line_input))
1146 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1148 if (unformat_user (line_input, unformat_vnet_sw_interface, vnm,
1151 else if (unformat (line_input, "retry %d", &retry_count))
1154 else if (unformat (line_input, "%U", unformat_ip4_address, &a4))
1156 else if (unformat (line_input, "%U", unformat_ip6_address, &a6))
1163 error = clib_error_return (0, "unknown input '%U'",
1164 format_unformat_error, line_input);
1169 if (sw_if_index == ~0)
1171 error = clib_error_return (0, "Interface required, not set.");
1174 if (address_set == 0)
1176 error = clib_error_return (0, "ip address required, not set.");
1179 if (address_set > 1)
1181 error = clib_error_return (0, "Multiple ip addresses not supported.");
1186 error = ip4_probe_neighbor_wait (vm, &a4, sw_if_index, retry_count);
1188 error = ip6_probe_neighbor_wait (vm, &a6, sw_if_index, retry_count);
1191 unformat_free (line_input);
1197 * The '<em>ip probe-neighbor</em>' command ARPs for IPv4 addresses or
1198 * attempts IPv6 neighbor discovery depending on the supplied IP address
1201 * @note This command will not immediately affect the indicated FIB; it
1202 * is not suitable for use in establishing a FIB entry prior to adding
1203 * recursive FIB entries. As in: don't use it in a script to probe a
1204 * gateway prior to adding a default route. It won't work. Instead,
1205 * configure a static ARP cache entry [see '<em>set ip arp</em>'], or
1206 * a static IPv6 neighbor [see '<em>set ip6 neighbor</em>'].
1209 * Example of probe for an IPv4 address:
1210 * @cliexcmd{ip probe-neighbor GigabitEthernet2/0/0 172.16.1.2}
1213 VLIB_CLI_COMMAND (ip_probe_neighbor_command, static) = {
1214 .path = "ip probe-neighbor",
1215 .function = probe_neighbor_address,
1216 .short_help = "ip probe-neighbor <interface> <ip4-addr> | <ip6-addr> [retry nn]",
1222 * fd.io coding-style-patch-verification: ON
1225 * eval: (c-set-style "gnu")