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 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 vnet_ip_route_cmd (vlib_main_t * vm,
355 unformat_input_t * main_input, vlib_cli_command_t * cmd)
357 unformat_input_t _line_input, *line_input = &_line_input;
358 fib_route_path_t *rpaths = NULL, rpath;
359 dpo_id_t dpo = DPO_INVALID, *dpos = NULL;
360 fib_prefix_t *prefixs = NULL, pfx;
361 mpls_label_t out_label, via_label;
362 clib_error_t *error = NULL;
363 u32 weight, preference;
364 u32 table_id, is_del;
370 vnm = vnet_get_main ();
374 memset (&pfx, 0, sizeof (pfx));
375 out_label = via_label = MPLS_LABEL_INVALID;
377 /* Get a line of input. */
378 if (!unformat_user (main_input, unformat_line_input, line_input))
381 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
383 memset (&rpath, 0, sizeof (rpath));
385 if (unformat (line_input, "table %d", &table_id))
387 else if (unformat (line_input, "del"))
389 else if (unformat (line_input, "add"))
391 else if (unformat (line_input, "resolve-via-host"))
393 if (vec_len (rpaths) == 0)
395 error = clib_error_return (0, "Paths then flags");
398 rpaths[vec_len (rpaths) - 1].frp_flags |=
399 FIB_ROUTE_PATH_RESOLVE_VIA_HOST;
401 else if (unformat (line_input, "resolve-via-attached"))
403 if (vec_len (rpaths) == 0)
405 error = clib_error_return (0, "Paths then flags");
408 rpaths[vec_len (rpaths) - 1].frp_flags |=
409 FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
411 else if (unformat (line_input, "out-label %U",
412 unformat_mpls_unicast_label, &out_label))
414 if (vec_len (rpaths) == 0)
416 error = clib_error_return (0, "Paths then labels");
419 vec_add1 (rpaths[vec_len (rpaths) - 1].frp_label_stack, out_label);
421 else if (unformat (line_input, "via-label %U",
422 unformat_mpls_unicast_label, &rpath.frp_local_label))
424 rpath.frp_weight = 1;
425 rpath.frp_eos = MPLS_NON_EOS;
426 rpath.frp_proto = FIB_PROTOCOL_MPLS;
427 rpath.frp_sw_if_index = ~0;
428 vec_add1 (rpaths, rpath);
430 else if (unformat (line_input, "count %f", &count))
433 else if (unformat (line_input, "%U/%d",
434 unformat_ip4_address, &pfx.fp_addr.ip4, &pfx.fp_len))
436 pfx.fp_proto = FIB_PROTOCOL_IP4;
437 vec_add1 (prefixs, pfx);
439 else if (unformat (line_input, "%U/%d",
440 unformat_ip6_address, &pfx.fp_addr.ip6, &pfx.fp_len))
442 pfx.fp_proto = FIB_PROTOCOL_IP6;
443 vec_add1 (prefixs, pfx);
445 else if (unformat (line_input, "via %U %U",
446 unformat_ip4_address,
448 unformat_vnet_sw_interface, vnm,
449 &rpath.frp_sw_if_index))
451 rpath.frp_weight = 1;
452 rpath.frp_proto = FIB_PROTOCOL_IP4;
453 vec_add1 (rpaths, rpath);
456 else if (unformat (line_input, "via %U %U",
457 unformat_ip6_address,
459 unformat_vnet_sw_interface, vnm,
460 &rpath.frp_sw_if_index))
462 rpath.frp_weight = 1;
463 rpath.frp_proto = FIB_PROTOCOL_IP6;
464 vec_add1 (rpaths, rpath);
466 else if (unformat (line_input, "weight %u", &weight))
468 ASSERT (vec_len (rpaths));
469 rpaths[vec_len (rpaths) - 1].frp_weight = weight;
471 else if (unformat (line_input, "preference %u", &preference))
473 ASSERT (vec_len (rpaths));
474 rpaths[vec_len (rpaths) - 1].frp_preference = preference;
476 else if (unformat (line_input, "via %U next-hop-table %d",
477 unformat_ip4_address,
478 &rpath.frp_addr.ip4, &rpath.frp_fib_index))
480 rpath.frp_weight = 1;
481 rpath.frp_sw_if_index = ~0;
482 rpath.frp_proto = FIB_PROTOCOL_IP4;
483 vec_add1 (rpaths, rpath);
485 else if (unformat (line_input, "via %U next-hop-table %d",
486 unformat_ip6_address,
487 &rpath.frp_addr.ip6, &rpath.frp_fib_index))
489 rpath.frp_weight = 1;
490 rpath.frp_sw_if_index = ~0;
491 rpath.frp_proto = FIB_PROTOCOL_IP6;
492 vec_add1 (rpaths, rpath);
494 else if (unformat (line_input, "via %U",
495 unformat_ip4_address, &rpath.frp_addr.ip4))
498 * the recursive next-hops are by default in the same table
501 rpath.frp_fib_index = table_id;
502 rpath.frp_weight = 1;
503 rpath.frp_sw_if_index = ~0;
504 rpath.frp_proto = FIB_PROTOCOL_IP4;
505 vec_add1 (rpaths, rpath);
507 else if (unformat (line_input, "via %U",
508 unformat_ip6_address, &rpath.frp_addr.ip6))
510 rpath.frp_fib_index = table_id;
511 rpath.frp_weight = 1;
512 rpath.frp_sw_if_index = ~0;
513 rpath.frp_proto = FIB_PROTOCOL_IP6;
514 vec_add1 (rpaths, rpath);
516 else if (unformat (line_input,
517 "lookup in table %d", &rpath.frp_fib_index))
519 rpath.frp_proto = pfx.fp_proto;
520 rpath.frp_sw_if_index = ~0;
521 vec_add1 (rpaths, rpath);
523 else if (vec_len (prefixs) > 0 &&
524 unformat (line_input, "via %U",
525 unformat_vnet_sw_interface, vnm,
526 &rpath.frp_sw_if_index))
528 rpath.frp_weight = 1;
529 rpath.frp_proto = prefixs[0].fp_proto;
530 vec_add1 (rpaths, rpath);
532 else if (vec_len (prefixs) > 0 &&
533 unformat (line_input, "via %U",
534 unformat_dpo, &dpo, prefixs[0].fp_proto))
536 vec_add1 (dpos, dpo);
540 error = unformat_parse_error (line_input);
545 if (vec_len (prefixs) == 0)
548 clib_error_return (0, "expected ip4/ip6 destination address/length.");
552 if (!is_del && vec_len (rpaths) + vec_len (dpos) == 0)
554 error = clib_error_return (0, "expected paths.");
561 * if no table_id is passed we will manipulate the default
567 fib_index = fib_table_find (prefixs[0].fp_proto, table_id);
571 error = clib_error_return (0, "Nonexistent table id %d", table_id);
576 for (i = 0; i < vec_len (prefixs); i++)
578 if (is_del && 0 == vec_len (rpaths))
580 fib_table_entry_delete (fib_index, &prefixs[i], FIB_SOURCE_CLI);
582 else if (!is_del && 1 == vec_len (dpos))
584 fib_table_entry_special_dpo_add (fib_index,
587 FIB_ENTRY_FLAG_EXCLUSIVE,
589 dpo_reset (&dpos[0]);
591 else if (vec_len (dpos) > 0)
594 clib_error_return (0,
595 "Load-balancing over multiple special adjacencies is unsupported");
598 else if (0 < vec_len (rpaths))
601 ip46_address_t dst = prefixs[i].fp_addr;
604 t[0] = vlib_time_now (vm);
605 incr = 1 << ((FIB_PROTOCOL_IP4 == prefixs[0].fp_proto ? 32 : 128) -
608 for (k = 0; k < n; k++)
610 for (j = 0; j < vec_len (rpaths); j++)
614 * the CLI parsing stored table Ids, swap to FIB indicies
616 fi = fib_table_find (prefixs[i].fp_proto,
617 rpaths[i].frp_fib_index);
622 clib_error_return (0, "Via table %d does not exist",
623 rpaths[i].frp_fib_index);
626 rpaths[i].frp_fib_index = fi;
628 fib_prefix_t rpfx = {
629 .fp_len = prefixs[i].fp_len,
630 .fp_proto = prefixs[i].fp_proto,
635 fib_table_entry_path_remove2 (fib_index,
637 FIB_SOURCE_CLI, &rpaths[j]);
639 fib_table_entry_path_add2 (fib_index,
646 if (FIB_PROTOCOL_IP4 == prefixs[0].fp_proto)
649 clib_host_to_net_u32 (incr +
650 clib_net_to_host_u32 (dst.
655 int bucket = (incr < 64 ? 0 : 1);
656 dst.ip6.as_u64[bucket] =
657 clib_host_to_net_u64 (incr +
658 clib_net_to_host_u64 (dst.ip6.as_u64
663 t[1] = vlib_time_now (vm);
665 vlib_cli_output (vm, "%.6e routes/sec", count / (t[1] - t[0]));
669 error = clib_error_return (0, "Don't understand what you want...");
679 unformat_free (line_input);
684 VLIB_CLI_COMMAND (vlib_cli_ip_command, static) = {
686 .short_help = "Internet protocol (IP) commands",
691 VLIB_CLI_COMMAND (vlib_cli_ip6_command, static) = {
693 .short_help = "Internet protocol version 6 (IPv6) commands",
698 VLIB_CLI_COMMAND (vlib_cli_show_ip_command, static) = {
700 .short_help = "Internet protocol (IP) show commands",
705 VLIB_CLI_COMMAND (vlib_cli_show_ip6_command, static) = {
707 .short_help = "Internet protocol version 6 (IPv6) show commands",
712 * This command is used to add or delete IPv4 or IPv6 routes. All
713 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
714 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
715 * can be IPv4 or IPv6, but all must be of the same form in a single
716 * command. To display the current set of routes, use the commands
717 * '<em>show ip fib</em>' and '<em>show ip6 fib</em>'.
720 * Example of how to add a straight forward static route:
721 * @cliexcmd{ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
722 * Example of how to delete a straight forward static route:
723 * @cliexcmd{ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
724 * Mainly for route add/del performance testing, one can add or delete
725 * multiple routes by adding 'count N' to the previous item:
726 * @cliexcmd{ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0}
727 * Add multiple routes for the same destination to create equal-cost multipath:
728 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0}
729 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0}
730 * For unequal-cost multipath, specify the desired weights. This
731 * combination of weights results in 3/4 of the traffic following the
732 * second path, 1/4 following the first path:
733 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1}
734 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3}
735 * To add a route to a particular FIB table (VRF), use:
736 * @cliexcmd{ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0}
739 VLIB_CLI_COMMAND (ip_route_command, static) = {
741 .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>]",
742 .function = vnet_ip_route_cmd,
748 vnet_ip_mroute_cmd (vlib_main_t * vm,
749 unformat_input_t * main_input, vlib_cli_command_t * cmd)
751 unformat_input_t _line_input, *line_input = &_line_input;
752 clib_error_t *error = NULL;
753 fib_route_path_t rpath;
754 u32 table_id, is_del;
758 mfib_itf_flags_t iflags = 0;
759 mfib_entry_flags_t eflags = 0;
760 u32 gcount, scount, ss, gg, incr;
764 vnm = vnet_get_main ();
767 memset (&pfx, 0, sizeof (pfx));
768 memset (&rpath, 0, sizeof (rpath));
769 rpath.frp_sw_if_index = ~0;
771 /* Get a line of input. */
772 if (!unformat_user (main_input, unformat_line_input, line_input))
775 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
777 if (unformat (line_input, "table %d", &table_id))
779 else if (unformat (line_input, "del"))
781 else if (unformat (line_input, "add"))
783 else if (unformat (line_input, "scount %d", &scount))
785 else if (unformat (line_input, "gcount %d", &gcount))
787 else if (unformat (line_input, "%U %U",
788 unformat_ip4_address,
789 &pfx.fp_src_addr.ip4,
790 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
792 pfx.fp_proto = FIB_PROTOCOL_IP4;
795 else if (unformat (line_input, "%U %U",
796 unformat_ip6_address,
797 &pfx.fp_src_addr.ip6,
798 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
800 pfx.fp_proto = FIB_PROTOCOL_IP6;
803 else if (unformat (line_input, "%U/%d",
804 unformat_ip4_address,
805 &pfx.fp_grp_addr.ip4, &pfx.fp_len))
807 memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
808 pfx.fp_proto = FIB_PROTOCOL_IP4;
810 else if (unformat (line_input, "%U/%d",
811 unformat_ip6_address,
812 &pfx.fp_grp_addr.ip6, &pfx.fp_len))
814 memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
815 pfx.fp_proto = FIB_PROTOCOL_IP6;
817 else if (unformat (line_input, "%U",
818 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
820 memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
821 pfx.fp_proto = FIB_PROTOCOL_IP4;
824 else if (unformat (line_input, "%U",
825 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
827 memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
828 pfx.fp_proto = FIB_PROTOCOL_IP6;
831 else if (unformat (line_input, "via %U",
832 unformat_vnet_sw_interface, vnm,
833 &rpath.frp_sw_if_index))
835 rpath.frp_weight = 1;
837 else if (unformat (line_input, "via local"))
839 rpath.frp_sw_if_index = ~0;
840 rpath.frp_weight = 1;
841 rpath.frp_flags |= FIB_ROUTE_PATH_LOCAL;
843 else if (unformat (line_input, "%U", unformat_mfib_itf_flags, &iflags))
845 else if (unformat (line_input, "%U",
846 unformat_mfib_entry_flags, &eflags))
850 error = unformat_parse_error (line_input);
858 * if no table_id is passed we will manipulate the default
864 fib_index = mfib_table_find (pfx.fp_proto, table_id);
868 error = clib_error_return (0, "Nonexistent table id %d", table_id);
873 timet[0] = vlib_time_now (vm);
875 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
877 incr = 1 << (32 - (pfx.fp_len % 32));
881 incr = 1 << (128 - (pfx.fp_len % 128));
884 for (ss = 0; ss < scount; ss++)
886 for (gg = 0; gg < gcount; gg++)
888 if (is_del && 0 == rpath.frp_weight)
890 /* no path provided => route delete */
891 mfib_table_entry_delete (fib_index, &pfx, MFIB_SOURCE_CLI);
895 mfib_table_entry_update (fib_index, &pfx, MFIB_SOURCE_CLI,
896 MFIB_RPF_ID_NONE, eflags);
901 mfib_table_entry_path_remove (fib_index,
902 &pfx, MFIB_SOURCE_CLI, &rpath);
904 mfib_table_entry_path_update (fib_index,
905 &pfx, MFIB_SOURCE_CLI, &rpath,
909 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
911 pfx.fp_grp_addr.ip4.as_u32 =
912 clib_host_to_net_u32 (incr +
913 clib_net_to_host_u32 (pfx.
919 int bucket = (incr < 64 ? 0 : 1);
920 pfx.fp_grp_addr.ip6.as_u64[bucket] =
921 clib_host_to_net_u64 (incr +
922 clib_net_to_host_u64 (pfx.
923 fp_grp_addr.ip6.as_u64
928 if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
930 pfx.fp_src_addr.ip4.as_u32 =
931 clib_host_to_net_u32 (1 +
932 clib_net_to_host_u32 (pfx.fp_src_addr.
937 pfx.fp_src_addr.ip6.as_u64[1] =
938 clib_host_to_net_u64 (1 +
939 clib_net_to_host_u64 (pfx.fp_src_addr.
944 timet[1] = vlib_time_now (vm);
946 if (scount > 1 || gcount > 1)
947 vlib_cli_output (vm, "%.6e routes/sec",
948 (scount * gcount) / (timet[1] - timet[0]));
951 unformat_free (line_input);
957 * This command is used to add or delete IPv4 or IPv6 multicastroutes. All
958 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
959 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
960 * can be IPv4 or IPv6, but all must be of the same form in a single
961 * command. To display the current set of routes, use the commands
962 * '<em>show ip mfib</em>' and '<em>show ip6 mfib</em>'.
963 * The full set of support flags for interfaces and route is shown via;
964 * '<em>show mfib route flags</em>' and '<em>show mfib itf flags</em>'
967 * Example of how to add a forwarding interface to a route (and create the
968 * route if it does not exist)
969 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/0 Forward}
970 * Example of how to add an accepting interface to a route (and create the
971 * route if it does not exist)
972 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/1 Accept}
973 * Example of changing the route's flags to send signals via the API
974 * @cliexcmd{ip mroute add 232.1.1.1 Signal}
978 VLIB_CLI_COMMAND (ip_mroute_command, static) =
981 .short_help = "ip mroute [add|del] <dst-ip-addr>/<width> [table <table-id>] [via <next-hop-ip-addr> [<interface>],",
982 .function = vnet_ip_mroute_cmd,
988 * The next two routines address a longstanding script hemorrhoid.
989 * Probing a v4 or v6 neighbor needs to appear to be synchronous,
990 * or dependent route-adds will simply fail.
992 static clib_error_t *
993 ip6_probe_neighbor_wait (vlib_main_t * vm, ip6_address_t * a, u32 sw_if_index,
996 vnet_main_t *vnm = vnet_get_main ();
1001 uword *event_data = 0;
1003 ASSERT (vlib_in_process_context (vm));
1005 if (retry_count > 0)
1006 vnet_register_ip6_neighbor_resolution_event
1007 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1008 1 /* event */ , 0 /* data */ );
1010 for (i = 0; i < retry_count; i++)
1012 /* The interface may be down, etc. */
1013 e = ip6_probe_neighbor (vm, a, sw_if_index);
1018 vlib_process_wait_for_event_or_clock (vm, 1.0);
1019 event_type = vlib_process_get_events (vm, &event_data);
1022 case 1: /* resolved... */
1023 vlib_cli_output (vm, "Resolved %U", format_ip6_address, a);
1027 case ~0: /* timeout */
1031 clib_warning ("unknown event_type %d", event_type);
1033 vec_reset_length (event_data);
1039 return clib_error_return (0, "Resolution failed for %U",
1040 format_ip6_address, a);
1044 static clib_error_t *
1045 ip4_probe_neighbor_wait (vlib_main_t * vm, ip4_address_t * a, u32 sw_if_index,
1048 vnet_main_t *vnm = vnet_get_main ();
1053 uword *event_data = 0;
1055 ASSERT (vlib_in_process_context (vm));
1057 if (retry_count > 0)
1058 vnet_register_ip4_arp_resolution_event
1059 (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index,
1060 1 /* event */ , 0 /* data */ );
1062 for (i = 0; i < retry_count; i++)
1064 /* The interface may be down, etc. */
1065 e = ip4_probe_neighbor (vm, a, sw_if_index);
1070 vlib_process_wait_for_event_or_clock (vm, 1.0);
1071 event_type = vlib_process_get_events (vm, &event_data);
1074 case 1: /* resolved... */
1075 vlib_cli_output (vm, "Resolved %U", format_ip4_address, a);
1079 case ~0: /* timeout */
1083 clib_warning ("unknown event_type %d", event_type);
1085 vec_reset_length (event_data);
1090 vec_reset_length (event_data);
1093 return clib_error_return (0, "Resolution failed for %U",
1094 format_ip4_address, a);
1098 static clib_error_t *
1099 probe_neighbor_address (vlib_main_t * vm,
1100 unformat_input_t * input, vlib_cli_command_t * cmd)
1102 vnet_main_t *vnm = vnet_get_main ();
1103 unformat_input_t _line_input, *line_input = &_line_input;
1106 clib_error_t *error = 0;
1107 u32 sw_if_index = ~0;
1108 int retry_count = 3;
1110 int address_set = 0;
1112 /* Get a line of input. */
1113 if (!unformat_user (input, unformat_line_input, line_input))
1116 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1118 if (unformat_user (line_input, unformat_vnet_sw_interface, vnm,
1121 else if (unformat (line_input, "retry %d", &retry_count))
1124 else if (unformat (line_input, "%U", unformat_ip4_address, &a4))
1126 else if (unformat (line_input, "%U", unformat_ip6_address, &a6))
1133 error = clib_error_return (0, "unknown input '%U'",
1134 format_unformat_error, line_input);
1139 if (sw_if_index == ~0)
1141 error = clib_error_return (0, "Interface required, not set.");
1144 if (address_set == 0)
1146 error = clib_error_return (0, "ip address required, not set.");
1149 if (address_set > 1)
1151 error = clib_error_return (0, "Multiple ip addresses not supported.");
1156 error = ip4_probe_neighbor_wait (vm, &a4, sw_if_index, retry_count);
1158 error = ip6_probe_neighbor_wait (vm, &a6, sw_if_index, retry_count);
1161 unformat_free (line_input);
1167 * The '<em>ip probe-neighbor</em>' command ARPs for IPv4 addresses or
1168 * attempts IPv6 neighbor discovery depending on the supplied IP address
1171 * @note This command will not immediately affect the indicated FIB; it
1172 * is not suitable for use in establishing a FIB entry prior to adding
1173 * recursive FIB entries. As in: don't use it in a script to probe a
1174 * gateway prior to adding a default route. It won't work. Instead,
1175 * configure a static ARP cache entry [see '<em>set ip arp</em>'], or
1176 * a static IPv6 neighbor [see '<em>set ip6 neighbor</em>'].
1179 * Example of probe for an IPv4 address:
1180 * @cliexcmd{ip probe-neighbor GigabitEthernet2/0/0 172.16.1.2}
1183 VLIB_CLI_COMMAND (ip_probe_neighbor_command, static) = {
1184 .path = "ip probe-neighbor",
1185 .function = probe_neighbor_address,
1186 .short_help = "ip probe-neighbor <interface> <ip4-addr> | <ip6-addr> [retry nn]",
1192 * fd.io coding-style-patch-verification: ON
1195 * eval: (c-set-style "gnu")