blob: acf650189dd8276b2a87acf8014eb385ad06f960 [file] [log] [blame]
Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
AkshayaNadahallied4a2fd2016-08-09 13:38:04 +05302 * Copyright (c) 2016 Cisco and/or its affiliates.
Ed Warnickecb9cada2015-12-08 15:45:58 -07003 * 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:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
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.
14 */
15/*
16 * ip/ip6_forward.c: IP v6 forwarding
17 *
18 * Copyright (c) 2008 Eliot Dresselhaus
19 *
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:
27 *
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
30 *
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.
38 */
39
40#include <vnet/vnet.h>
41#include <vnet/ip/ip.h>
Ole Troan313f7e22018-04-10 16:02:51 +020042#include <vnet/ip/ip_frag.h>
Pavel Kotucek9f5a2b62017-06-14 13:56:55 +020043#include <vnet/ip/ip6_neighbor.h>
Dave Barachd7cb1b52016-12-09 09:52:16 -050044#include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */
Ed Warnickecb9cada2015-12-08 15:45:58 -070045#include <vnet/srp/srp.h> /* for srp_hw_interface_class */
46#include <vppinfra/cache.h>
AkshayaNadahalli0f438df2017-02-10 10:54:16 +053047#include <vnet/fib/fib_urpf_list.h> /* for FIB uRPF check */
Neale Ranns0bfe5d82016-08-25 15:29:12 +010048#include <vnet/fib/ip6_fib.h>
Neale Ranns32e1c012016-11-22 17:07:28 +000049#include <vnet/mfib/ip6_mfib.h>
Neale Rannsf12a83f2017-04-18 09:09:40 -070050#include <vnet/dpo/load_balance_map.h>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010051#include <vnet/dpo/classify_dpo.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070052
Damjan Marion38173502019-02-13 19:30:09 +010053#ifndef CLIB_MARCH_VARIANT
Ed Warnickecb9cada2015-12-08 15:45:58 -070054#include <vppinfra/bihash_template.c>
Damjan Marion38173502019-02-13 19:30:09 +010055#endif
Vijayabhaskar Katamreddyacbde662018-01-23 13:39:40 -080056#include <vnet/ip/ip6_forward.h>
Neale Ranns25edf142019-03-22 08:12:48 +000057#include <vnet/interface_output.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070058
AkshayaNadahallifdd81af2016-12-01 16:33:51 +053059/* Flag used by IOAM code. Classifier sets it pop-hop-by-hop checks it */
60#define OI_DECAP 0x80000000
61
Ed Warnickecb9cada2015-12-08 15:45:58 -070062static void
Matthew Smith6c92f5b2019-08-07 11:46:30 -050063ip6_add_interface_prefix_routes (ip6_main_t * im,
64 u32 sw_if_index,
65 u32 fib_index,
66 ip6_address_t * address, u32 address_length)
67{
68 ip_lookup_main_t *lm = &im->lookup_main;
69 ip_interface_prefix_t *if_prefix;
70
Neale Ranns1ff3c152019-10-07 22:40:54 -070071 /* *INDENT-OFF* */
Matthew Smith6c92f5b2019-08-07 11:46:30 -050072 ip_interface_prefix_key_t key = {
73 .prefix = {
Neale Ranns1ff3c152019-10-07 22:40:54 -070074 .fp_len = address_length,
75 .fp_proto = FIB_PROTOCOL_IP6,
76 .fp_addr.ip6 = {
77 .as_u64 = {
78 address->as_u64[0] & im->fib_masks[address_length].as_u64[0],
79 address->as_u64[1] & im->fib_masks[address_length].as_u64[1],
80 },
81 },
82 },
Matthew Smith6c92f5b2019-08-07 11:46:30 -050083 .sw_if_index = sw_if_index,
84 };
Neale Ranns1ff3c152019-10-07 22:40:54 -070085 /* *INDENT-ON* */
Matthew Smith6c92f5b2019-08-07 11:46:30 -050086
87 /* If prefix already set on interface, just increment ref count & return */
88 if_prefix = ip_get_interface_prefix (lm, &key);
89 if (if_prefix)
90 {
91 if_prefix->ref_count += 1;
92 return;
93 }
94
95 /* New prefix - allocate a pool entry, initialize it, add to the hash */
96 pool_get (lm->if_prefix_pool, if_prefix);
97 if_prefix->ref_count = 1;
98 clib_memcpy (&if_prefix->key, &key, sizeof (key));
99 mhash_set (&lm->prefix_to_if_prefix_index, &key,
100 if_prefix - lm->if_prefix_pool, 0 /* old value */ );
101
102 /* length < 128 - add glean */
103 if (address_length < 128)
104 {
105 /* set the glean route for the prefix */
106 fib_table_entry_update_one_path (fib_index, &key.prefix,
107 FIB_SOURCE_INTERFACE,
108 (FIB_ENTRY_FLAG_CONNECTED |
109 FIB_ENTRY_FLAG_ATTACHED),
110 DPO_PROTO_IP6,
111 /* No next-hop address */
112 NULL, sw_if_index,
113 /* invalid FIB index */
114 ~0, 1,
115 /* no out-label stack */
116 NULL, FIB_ROUTE_PATH_FLAG_NONE);
117 }
118}
119
120static void
Ed Warnickecb9cada2015-12-08 15:45:58 -0700121ip6_add_interface_routes (vnet_main_t * vnm, u32 sw_if_index,
122 ip6_main_t * im, u32 fib_index,
123 ip_interface_address_t * a)
124{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500125 ip_lookup_main_t *lm = &im->lookup_main;
126 ip6_address_t *address = ip_interface_address_get_address (lm, a);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100127 fib_prefix_t pfx = {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500128 .fp_len = a->address_length,
129 .fp_proto = FIB_PROTOCOL_IP6,
130 .fp_addr.ip6 = *address,
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100131 };
Ed Warnickecb9cada2015-12-08 15:45:58 -0700132
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500133 /* set special routes for the prefix if needed */
134 ip6_add_interface_prefix_routes (im, sw_if_index, fib_index,
135 address, a->address_length);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700136
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100137 pfx.fp_len = 128;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700138 if (sw_if_index < vec_len (lm->classify_table_index_by_sw_if_index))
Dave Barachd7cb1b52016-12-09 09:52:16 -0500139 {
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100140 u32 classify_table_index =
Dave Barachd7cb1b52016-12-09 09:52:16 -0500141 lm->classify_table_index_by_sw_if_index[sw_if_index];
142 if (classify_table_index != (u32) ~ 0)
143 {
144 dpo_id_t dpo = DPO_INVALID;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100145
Dave Barachd7cb1b52016-12-09 09:52:16 -0500146 dpo_set (&dpo,
147 DPO_CLASSIFY,
148 DPO_PROTO_IP6,
149 classify_dpo_create (DPO_PROTO_IP6, classify_table_index));
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100150
Dave Barachd7cb1b52016-12-09 09:52:16 -0500151 fib_table_entry_special_dpo_add (fib_index,
152 &pfx,
153 FIB_SOURCE_CLASSIFY,
154 FIB_ENTRY_FLAG_NONE, &dpo);
155 dpo_reset (&dpo);
156 }
157 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100158
Neale Rannsf12a83f2017-04-18 09:09:40 -0700159 fib_table_entry_update_one_path (fib_index, &pfx,
160 FIB_SOURCE_INTERFACE,
161 (FIB_ENTRY_FLAG_CONNECTED |
162 FIB_ENTRY_FLAG_LOCAL),
Neale Rannsda78f952017-05-24 09:15:43 -0700163 DPO_PROTO_IP6,
Neale Rannsf12a83f2017-04-18 09:09:40 -0700164 &pfx.fp_addr,
165 sw_if_index, ~0,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500166 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700167}
168
169static void
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500170ip6_del_interface_prefix_routes (ip6_main_t * im,
171 u32 sw_if_index,
172 u32 fib_index,
173 ip6_address_t * address, u32 address_length)
174{
175 ip_lookup_main_t *lm = &im->lookup_main;
176 ip_interface_prefix_t *if_prefix;
177
Neale Ranns1ff3c152019-10-07 22:40:54 -0700178 /* *INDENT-OFF* */
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500179 ip_interface_prefix_key_t key = {
180 .prefix = {
Neale Ranns1ff3c152019-10-07 22:40:54 -0700181 .fp_len = address_length,
182 .fp_proto = FIB_PROTOCOL_IP6,
183 .fp_addr.ip6 = {
184 .as_u64 = {
185 address->as_u64[0] & im->fib_masks[address_length].as_u64[0],
186 address->as_u64[1] & im->fib_masks[address_length].as_u64[1],
187 },
188 },
189 },
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500190 .sw_if_index = sw_if_index,
191 };
Neale Ranns1ff3c152019-10-07 22:40:54 -0700192 /* *INDENT-ON* */
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500193
194 if_prefix = ip_get_interface_prefix (lm, &key);
195 if (!if_prefix)
196 {
197 clib_warning ("Prefix not found while deleting %U",
198 format_ip4_address_and_length, address, address_length);
199 return;
200 }
201
202 /* If not deleting last intf addr in prefix, decrement ref count & return */
203 if_prefix->ref_count -= 1;
204 if (if_prefix->ref_count > 0)
205 return;
206
Neale Ranns1ff3c152019-10-07 22:40:54 -0700207 /* length <= 128, delete glean route */
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500208 if (address_length <= 128)
209 {
210 /* remove glean route for prefix */
211 fib_table_entry_delete (fib_index, &key.prefix, FIB_SOURCE_INTERFACE);
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500212 }
213
214 mhash_unset (&lm->prefix_to_if_prefix_index, &key, 0 /* old_value */ );
215 pool_put (lm->if_prefix_pool, if_prefix);
216}
217
218static void
219ip6_del_interface_routes (u32 sw_if_index, ip6_main_t * im,
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100220 u32 fib_index,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500221 ip6_address_t * address, u32 address_length)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700222{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500223 fib_prefix_t pfx = {
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500224 .fp_len = 128,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500225 .fp_proto = FIB_PROTOCOL_IP6,
226 .fp_addr.ip6 = *address,
227 };
Ed Warnickecb9cada2015-12-08 15:45:58 -0700228
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500229 /* delete special routes for the prefix if needed */
230 ip6_del_interface_prefix_routes (im, sw_if_index, fib_index,
231 address, address_length);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100232
Dave Barachd7cb1b52016-12-09 09:52:16 -0500233 fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700234}
235
Damjan Marion38173502019-02-13 19:30:09 +0100236#ifndef CLIB_MARCH_VARIANT
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100237void
Dave Barachd7cb1b52016-12-09 09:52:16 -0500238ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100239{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500240 ip6_main_t *im = &ip6_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700241
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100242 vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700243
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100244 /*
245 * enable/disable only on the 1<->0 transition
246 */
247 if (is_enable)
248 {
249 if (1 != ++im->ip_enabled_by_sw_if_index[sw_if_index])
Dave Barachd7cb1b52016-12-09 09:52:16 -0500250 return;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100251 }
252 else
253 {
Neale Ranns75152282017-01-09 01:00:45 -0800254 /* The ref count is 0 when an address is removed from an interface that has
255 * no address - this is not a ciritical error */
256 if (0 == im->ip_enabled_by_sw_if_index[sw_if_index] ||
257 0 != --im->ip_enabled_by_sw_if_index[sw_if_index])
Dave Barachd7cb1b52016-12-09 09:52:16 -0500258 return;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100259 }
260
Neale Ranns8269d3d2018-01-30 09:02:20 -0800261 vnet_feature_enable_disable ("ip6-unicast", "ip6-not-enabled", sw_if_index,
Neale Ranns630198f2017-05-22 09:20:20 -0400262 !is_enable, 0, 0);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100263
Neale Ranns8269d3d2018-01-30 09:02:20 -0800264 vnet_feature_enable_disable ("ip6-multicast", "ip6-not-enabled",
265 sw_if_index, !is_enable, 0, 0);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100266}
267
Neale Rannsdf089a82016-10-02 16:39:06 +0100268/* get first interface address */
269ip6_address_t *
Neale Ranns6cfc39c2017-02-14 01:44:25 -0800270ip6_interface_first_address (ip6_main_t * im, u32 sw_if_index)
Neale Rannsdf089a82016-10-02 16:39:06 +0100271{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500272 ip_lookup_main_t *lm = &im->lookup_main;
273 ip_interface_address_t *ia = 0;
274 ip6_address_t *result = 0;
Neale Rannsdf089a82016-10-02 16:39:06 +0100275
Dave Barachd7cb1b52016-12-09 09:52:16 -0500276 /* *INDENT-OFF* */
Neale Rannsdf089a82016-10-02 16:39:06 +0100277 foreach_ip_interface_address (lm, ia, sw_if_index,
278 1 /* honor unnumbered */,
279 ({
280 ip6_address_t * a = ip_interface_address_get_address (lm, ia);
281 result = a;
282 break;
283 }));
Dave Barachd7cb1b52016-12-09 09:52:16 -0500284 /* *INDENT-ON* */
Neale Rannsdf089a82016-10-02 16:39:06 +0100285 return result;
286}
287
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100288clib_error_t *
289ip6_add_del_interface_address (vlib_main_t * vm,
290 u32 sw_if_index,
291 ip6_address_t * address,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500292 u32 address_length, u32 is_del)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700293{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500294 vnet_main_t *vnm = vnet_get_main ();
295 ip6_main_t *im = &ip6_main;
296 ip_lookup_main_t *lm = &im->lookup_main;
297 clib_error_t *error;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700298 u32 if_address_index;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500299 ip6_address_fib_t ip6_af, *addr_fib = 0;
Juraj Sloboda5bb1eca2018-10-22 09:57:13 +0200300 ip6_address_t ll_addr;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700301
Pavel Kotucek57808982017-08-02 08:20:19 +0200302 /* local0 interface doesn't support IP addressing */
303 if (sw_if_index == 0)
304 {
305 return
306 clib_error_create ("local0 interface doesn't support IP addressing");
307 }
308
Juraj Sloboda5bb1eca2018-10-22 09:57:13 +0200309 if (ip6_address_is_link_local_unicast (address))
310 {
311 if (address_length != 128)
312 {
313 vnm->api_errno = VNET_API_ERROR_ADDRESS_LENGTH_MISMATCH;
314 return
315 clib_error_create
316 ("prefix length of link-local address must be 128");
317 }
318 if (!is_del)
319 {
320 return ip6_neighbor_set_link_local_address (vm, sw_if_index,
321 address);
322 }
323 else
324 {
325 ll_addr = ip6_neighbor_get_link_local_address (sw_if_index);
326 if (ip6_address_is_equal (&ll_addr, address))
327 {
328 vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_DELETABLE;
329 return clib_error_create ("address not deletable");
330 }
331 else
332 {
333 vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
334 return clib_error_create ("address not found");
335 }
336 }
337 }
338
Ed Warnickecb9cada2015-12-08 15:45:58 -0700339 vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
Neale Ranns32e1c012016-11-22 17:07:28 +0000340 vec_validate (im->mfib_index_by_sw_if_index, sw_if_index);
341
Ed Warnickecb9cada2015-12-08 15:45:58 -0700342 ip6_addr_fib_init (&ip6_af, address,
343 vec_elt (im->fib_index_by_sw_if_index, sw_if_index));
344 vec_add1 (addr_fib, ip6_af);
345
Neale Ranns744902e2017-08-14 10:35:44 -0700346 /* *INDENT-OFF* */
347 if (!is_del)
348 {
349 /* When adding an address check that it does not conflict
350 with an existing address on any interface in this table. */
351 ip_interface_address_t *ia;
352 vnet_sw_interface_t *sif;
353
354 pool_foreach(sif, vnm->interface_main.sw_interfaces,
355 ({
356 if (im->fib_index_by_sw_if_index[sw_if_index] ==
357 im->fib_index_by_sw_if_index[sif->sw_if_index])
358 {
359 foreach_ip_interface_address
360 (&im->lookup_main, ia, sif->sw_if_index,
361 0 /* honor unnumbered */ ,
362 ({
363 ip6_address_t * x =
364 ip_interface_address_get_address
365 (&im->lookup_main, ia);
366 if (ip6_destination_matches_route
367 (im, address, x, ia->address_length) ||
368 ip6_destination_matches_route (im,
369 x,
370 address,
371 address_length))
372 {
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500373 /* an intf may have >1 addr from the same prefix */
374 if ((sw_if_index == sif->sw_if_index) &&
375 (ia->address_length == address_length) &&
376 !ip6_address_is_equal (x, address))
377 continue;
378
379 /* error if the length or intf was different */
Neale Ranns744902e2017-08-14 10:35:44 -0700380 vnm->api_errno = VNET_API_ERROR_DUPLICATE_IF_ADDRESS;
381 return
382 clib_error_create
383 ("failed to add %U which conflicts with %U for interface %U",
384 format_ip6_address_and_length, address,
385 address_length,
386 format_ip6_address_and_length, x,
387 ia->address_length,
388 format_vnet_sw_if_index_name, vnm,
389 sif->sw_if_index);
390 }
391 }));
392 }
393 }));
394 }
395 /* *INDENT-ON* */
396
Ed Warnickecb9cada2015-12-08 15:45:58 -0700397 {
398 uword elts_before = pool_elts (lm->if_address_pool);
399
400 error = ip_interface_address_add_del
Dave Barachd7cb1b52016-12-09 09:52:16 -0500401 (lm, sw_if_index, addr_fib, address_length, is_del, &if_address_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700402 if (error)
403 goto done;
404
405 /* Pool did not grow: add duplicate address. */
406 if (elts_before == pool_elts (lm->if_address_pool))
407 goto done;
408 }
409
Dave Barachd7cb1b52016-12-09 09:52:16 -0500410 ip6_sw_interface_enable_disable (sw_if_index, !is_del);
Neale Ranns177bbdc2016-11-15 09:46:51 +0000411
Neale Ranns1ff3c152019-10-07 22:40:54 -0700412 /* intf addr routes are added/deleted on admin up/down */
413 if (vnet_sw_interface_is_admin_up (vnm, sw_if_index))
414 {
415 if (is_del)
416 ip6_del_interface_routes (sw_if_index,
417 im, ip6_af.fib_index, address,
418 address_length);
419 else
420 ip6_add_interface_routes (vnm, sw_if_index,
421 im, ip6_af.fib_index,
422 pool_elt_at_index (lm->if_address_pool,
423 if_address_index));
424 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700425 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500426 ip6_add_del_interface_address_callback_t *cb;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700427 vec_foreach (cb, im->add_del_interface_address_callbacks)
428 cb->function (im, cb->function_opaque, sw_if_index,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500429 address, address_length, if_address_index, is_del);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700430 }
431
Dave Barachd7cb1b52016-12-09 09:52:16 -0500432done:
Ed Warnickecb9cada2015-12-08 15:45:58 -0700433 vec_free (addr_fib);
434 return error;
435}
436
Damjan Marion38173502019-02-13 19:30:09 +0100437#endif
438
439static clib_error_t *
Dave Barachd7cb1b52016-12-09 09:52:16 -0500440ip6_sw_interface_admin_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700441{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500442 ip6_main_t *im = &ip6_main;
443 ip_interface_address_t *ia;
444 ip6_address_t *a;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700445 u32 is_admin_up, fib_index;
446
447 /* Fill in lookup tables with default table (0). */
448 vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
449
Dave Barachd7cb1b52016-12-09 09:52:16 -0500450 vec_validate_init_empty (im->
451 lookup_main.if_address_pool_index_by_sw_if_index,
452 sw_if_index, ~0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700453
454 is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
455
456 fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
457
Dave Barachd7cb1b52016-12-09 09:52:16 -0500458 /* *INDENT-OFF* */
Dave Barach75fc8542016-10-11 16:16:02 -0400459 foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700460 0 /* honor unnumbered */,
461 ({
462 a = ip_interface_address_get_address (&im->lookup_main, ia);
463 if (is_admin_up)
464 ip6_add_interface_routes (vnm, sw_if_index,
465 im, fib_index,
466 ia);
467 else
Matthew Smith6c92f5b2019-08-07 11:46:30 -0500468 ip6_del_interface_routes (sw_if_index, im, fib_index,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700469 a, ia->address_length);
470 }));
Dave Barachd7cb1b52016-12-09 09:52:16 -0500471 /* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700472
473 return 0;
474}
475
476VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_sw_interface_admin_up_down);
477
Dave Barachd6534602016-06-14 18:38:02 -0400478/* Built-in ip6 unicast rx feature path definition */
Dave Barachd7cb1b52016-12-09 09:52:16 -0500479/* *INDENT-OFF* */
Damjan Marion8b3191e2016-11-09 19:54:20 +0100480VNET_FEATURE_ARC_INIT (ip6_unicast, static) =
481{
482 .arc_name = "ip6-unicast",
483 .start_nodes = VNET_FEATURES ("ip6-input"),
Dave Baracha25def72018-11-26 11:04:45 -0500484 .last_in_arc = "ip6-lookup",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100485 .arc_index_ptr = &ip6_main.lookup_main.ucast_feature_arc_index,
486};
487
Dave Barachd7cb1b52016-12-09 09:52:16 -0500488VNET_FEATURE_INIT (ip6_flow_classify, static) =
489{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100490 .arc_name = "ip6-unicast",
Juraj Sloboda506b2452016-08-07 23:45:24 -0700491 .node_name = "ip6-flow-classify",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100492 .runs_before = VNET_FEATURES ("ip6-inacl"),
Juraj Sloboda506b2452016-08-07 23:45:24 -0700493};
494
Dave Barachd7cb1b52016-12-09 09:52:16 -0500495VNET_FEATURE_INIT (ip6_inacl, static) =
496{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100497 .arc_name = "ip6-unicast",
Dave Barach75fc8542016-10-11 16:16:02 -0400498 .node_name = "ip6-inacl",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100499 .runs_before = VNET_FEATURES ("ip6-policer-classify"),
Dave Barachd6534602016-06-14 18:38:02 -0400500};
501
Dave Barachd7cb1b52016-12-09 09:52:16 -0500502VNET_FEATURE_INIT (ip6_policer_classify, static) =
503{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100504 .arc_name = "ip6-unicast",
Matus Fabian70e6a8d2016-06-20 08:10:42 -0700505 .node_name = "ip6-policer-classify",
Pierre Pfister057b3562018-12-10 17:01:01 +0100506 .runs_before = VNET_FEATURES ("ipsec6-input-feature"),
Matus Fabian70e6a8d2016-06-20 08:10:42 -0700507};
508
Dave Barachd7cb1b52016-12-09 09:52:16 -0500509VNET_FEATURE_INIT (ip6_ipsec, static) =
510{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100511 .arc_name = "ip6-unicast",
Pierre Pfister057b3562018-12-10 17:01:01 +0100512 .node_name = "ipsec6-input-feature",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100513 .runs_before = VNET_FEATURES ("l2tp-decap"),
Dave Barachd6534602016-06-14 18:38:02 -0400514};
515
Dave Barachd7cb1b52016-12-09 09:52:16 -0500516VNET_FEATURE_INIT (ip6_l2tp, static) =
517{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100518 .arc_name = "ip6-unicast",
Dave Barachd6534602016-06-14 18:38:02 -0400519 .node_name = "l2tp-decap",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100520 .runs_before = VNET_FEATURES ("vpath-input-ip6"),
Dave Barachd6534602016-06-14 18:38:02 -0400521};
522
Dave Barachd7cb1b52016-12-09 09:52:16 -0500523VNET_FEATURE_INIT (ip6_vpath, static) =
524{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100525 .arc_name = "ip6-unicast",
Dave Barachd6534602016-06-14 18:38:02 -0400526 .node_name = "vpath-input-ip6",
John Lo2b81eb82017-01-30 13:12:10 -0500527 .runs_before = VNET_FEATURES ("ip6-vxlan-bypass"),
528};
529
530VNET_FEATURE_INIT (ip6_vxlan_bypass, static) =
531{
532 .arc_name = "ip6-unicast",
533 .node_name = "ip6-vxlan-bypass",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100534 .runs_before = VNET_FEATURES ("ip6-lookup"),
Dave Barachd6534602016-06-14 18:38:02 -0400535};
536
Neale Ranns8269d3d2018-01-30 09:02:20 -0800537VNET_FEATURE_INIT (ip6_not_enabled, static) =
Dave Barachd7cb1b52016-12-09 09:52:16 -0500538{
Damjan Marion8b3191e2016-11-09 19:54:20 +0100539 .arc_name = "ip6-unicast",
Neale Ranns8269d3d2018-01-30 09:02:20 -0800540 .node_name = "ip6-not-enabled",
Neale Ranns630198f2017-05-22 09:20:20 -0400541 .runs_before = VNET_FEATURES ("ip6-lookup"),
542};
543
544VNET_FEATURE_INIT (ip6_lookup, static) =
545{
546 .arc_name = "ip6-unicast",
547 .node_name = "ip6-lookup",
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100548 .runs_before = 0, /*last feature*/
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100549};
550
Dave Barachd6534602016-06-14 18:38:02 -0400551/* Built-in ip6 multicast rx feature path definition (none now) */
Damjan Marion8b3191e2016-11-09 19:54:20 +0100552VNET_FEATURE_ARC_INIT (ip6_multicast, static) =
553{
554 .arc_name = "ip6-multicast",
555 .start_nodes = VNET_FEATURES ("ip6-input"),
Dave Baracha25def72018-11-26 11:04:45 -0500556 .last_in_arc = "ip6-mfib-forward-lookup",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100557 .arc_index_ptr = &ip6_main.lookup_main.mcast_feature_arc_index,
558};
559
560VNET_FEATURE_INIT (ip6_vpath_mc, static) = {
561 .arc_name = "ip6-multicast",
Dave Barachd6534602016-06-14 18:38:02 -0400562 .node_name = "vpath-input-ip6",
Neale Ranns32e1c012016-11-22 17:07:28 +0000563 .runs_before = VNET_FEATURES ("ip6-mfib-forward-lookup"),
Dave Barachd6534602016-06-14 18:38:02 -0400564};
565
Neale Ranns8269d3d2018-01-30 09:02:20 -0800566VNET_FEATURE_INIT (ip6_not_enabled_mc, static) = {
Damjan Marion8b3191e2016-11-09 19:54:20 +0100567 .arc_name = "ip6-multicast",
Neale Ranns8269d3d2018-01-30 09:02:20 -0800568 .node_name = "ip6-not-enabled",
Neale Ranns630198f2017-05-22 09:20:20 -0400569 .runs_before = VNET_FEATURES ("ip6-mfib-forward-lookup"),
570};
571
572VNET_FEATURE_INIT (ip6_mc_lookup, static) = {
573 .arc_name = "ip6-multicast",
574 .node_name = "ip6-mfib-forward-lookup",
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100575 .runs_before = 0, /* last feature */
Neale Ranns5e575b12016-10-03 09:40:25 +0100576};
Dave Barach5331c722016-08-17 11:54:30 -0400577
578/* Built-in ip4 tx feature path definition */
Damjan Marion8b3191e2016-11-09 19:54:20 +0100579VNET_FEATURE_ARC_INIT (ip6_output, static) =
580{
581 .arc_name = "ip6-output",
Neale Rannsf068c3e2018-01-03 04:18:48 -0800582 .start_nodes = VNET_FEATURES ("ip6-rewrite", "ip6-midchain", "ip6-dvr-dpo"),
Dave Baracha25def72018-11-26 11:04:45 -0500583 .last_in_arc = "interface-output",
Damjan Marion8b3191e2016-11-09 19:54:20 +0100584 .arc_index_ptr = &ip6_main.lookup_main.output_feature_arc_index,
Dave Barach5331c722016-08-17 11:54:30 -0400585};
586
Andrew Yourtchenko815d7d52018-02-07 11:37:02 +0100587VNET_FEATURE_INIT (ip6_outacl, static) = {
588 .arc_name = "ip6-output",
589 .node_name = "ip6-outacl",
Pierre Pfister057b3562018-12-10 17:01:01 +0100590 .runs_before = VNET_FEATURES ("ipsec6-output-feature"),
Andrew Yourtchenko815d7d52018-02-07 11:37:02 +0100591};
592
Matus Fabian08a6f012016-11-15 06:08:51 -0800593VNET_FEATURE_INIT (ip6_ipsec_output, static) = {
594 .arc_name = "ip6-output",
Pierre Pfister057b3562018-12-10 17:01:01 +0100595 .node_name = "ipsec6-output-feature",
Matus Fabian08a6f012016-11-15 06:08:51 -0800596 .runs_before = VNET_FEATURES ("interface-output"),
597};
598
Damjan Marion8b3191e2016-11-09 19:54:20 +0100599VNET_FEATURE_INIT (ip6_interface_output, static) = {
600 .arc_name = "ip6-output",
601 .node_name = "interface-output",
602 .runs_before = 0, /* not before any other features */
603};
Dave Barachd7cb1b52016-12-09 09:52:16 -0500604/* *INDENT-ON* */
Dave Barachd6534602016-06-14 18:38:02 -0400605
Damjan Marion38173502019-02-13 19:30:09 +0100606static clib_error_t *
Dave Barachd7cb1b52016-12-09 09:52:16 -0500607ip6_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700608{
Florin Corasb5c13fd2017-05-10 12:32:53 -0700609 ip6_main_t *im = &ip6_main;
610
611 vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
612 vec_validate (im->mfib_index_by_sw_if_index, sw_if_index);
613
Pavel Kotucek9f5a2b62017-06-14 13:56:55 +0200614 if (!is_add)
615 {
616 /* Ensure that IPv6 is disabled */
617 ip6_main_t *im6 = &ip6_main;
618 ip_lookup_main_t *lm6 = &im6->lookup_main;
619 ip_interface_address_t *ia = 0;
620 ip6_address_t *address;
621 vlib_main_t *vm = vlib_get_main ();
622
623 ip6_neighbor_sw_interface_add_del (vnm, sw_if_index, 0 /* is_add */ );
Neale Ranns2ae2bc52018-03-16 03:22:39 -0700624 vnet_sw_interface_update_unnumbered (sw_if_index, ~0, 0);
Pavel Kotucek9f5a2b62017-06-14 13:56:55 +0200625 /* *INDENT-OFF* */
Neale Ranns2ae2bc52018-03-16 03:22:39 -0700626 foreach_ip_interface_address (lm6, ia, sw_if_index, 0,
Pavel Kotucek9f5a2b62017-06-14 13:56:55 +0200627 ({
628 address = ip_interface_address_get_address (lm6, ia);
629 ip6_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1);
630 }));
631 /* *INDENT-ON* */
632 ip6_mfib_interface_enable_disable (sw_if_index, 0);
633 }
634
Neale Ranns8269d3d2018-01-30 09:02:20 -0800635 vnet_feature_enable_disable ("ip6-unicast", "ip6-not-enabled", sw_if_index,
Damjan Marion8b3191e2016-11-09 19:54:20 +0100636 is_add, 0, 0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700637
Neale Ranns8269d3d2018-01-30 09:02:20 -0800638 vnet_feature_enable_disable ("ip6-multicast", "ip6-not-enabled",
639 sw_if_index, is_add, 0, 0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700640
Ed Warnickecb9cada2015-12-08 15:45:58 -0700641 return /* no error */ 0;
642}
643
644VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip6_sw_interface_add_del);
645
Damjan Marion38173502019-02-13 19:30:09 +0100646VLIB_NODE_FN (ip6_lookup_node) (vlib_main_t * vm,
647 vlib_node_runtime_t * node,
648 vlib_frame_t * frame)
Damjan Marionaca64c92016-04-13 09:48:56 +0200649{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100650 return ip6_lookup_inline (vm, node, frame);
Damjan Marionaca64c92016-04-13 09:48:56 +0200651}
652
Dave Barachd7cb1b52016-12-09 09:52:16 -0500653static u8 *format_ip6_lookup_trace (u8 * s, va_list * args);
Pierre Pfister0febaf12016-06-08 12:23:21 +0100654
Dave Barachd7cb1b52016-12-09 09:52:16 -0500655/* *INDENT-OFF* */
656VLIB_REGISTER_NODE (ip6_lookup_node) =
657{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700658 .name = "ip6-lookup",
659 .vector_size = sizeof (u32),
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100660 .format_trace = format_ip6_lookup_trace,
Ole Troanf0f85222016-06-14 21:12:32 +0200661 .n_next_nodes = IP6_LOOKUP_N_NEXT,
Damjan Marionb2707892016-04-13 11:21:07 +0200662 .next_nodes = IP6_LOOKUP_NEXT_NODES,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700663};
Dave Barachd7cb1b52016-12-09 09:52:16 -0500664/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700665
Damjan Marion38173502019-02-13 19:30:09 +0100666VLIB_NODE_FN (ip6_load_balance_node) (vlib_main_t * vm,
667 vlib_node_runtime_t * node,
668 vlib_frame_t * frame)
Damjan Marionaca64c92016-04-13 09:48:56 +0200669{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500670 vlib_combined_counter_main_t *cm = &load_balance_main.lbm_via_counters;
Neale Ranns3ce72b22019-05-27 08:21:32 -0400671 u32 n_left, *from;
Damjan Marion067cd622018-07-11 12:47:43 +0200672 u32 thread_index = vm->thread_index;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500673 ip6_main_t *im = &ip6_main;
Neale Ranns3ce72b22019-05-27 08:21:32 -0400674 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
675 u16 nexts[VLIB_FRAME_SIZE], *next;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100676
677 from = vlib_frame_vector_args (frame);
Neale Ranns3ce72b22019-05-27 08:21:32 -0400678 n_left = frame->n_vectors;
679 next = nexts;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100680
Neale Ranns3ce72b22019-05-27 08:21:32 -0400681 vlib_get_buffers (vm, from, bufs, n_left);
682
683 while (n_left >= 4)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100684 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400685 const load_balance_t *lb0, *lb1;
686 const ip6_header_t *ip0, *ip1;
687 u32 lbi0, hc0, lbi1, hc1;
688 const dpo_id_t *dpo0, *dpo1;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100689
Neale Ranns3ce72b22019-05-27 08:21:32 -0400690 /* Prefetch next iteration. */
691 {
692 vlib_prefetch_buffer_header (b[2], STORE);
693 vlib_prefetch_buffer_header (b[3], STORE);
Dave Barach75fc8542016-10-11 16:16:02 -0400694
Neale Ranns3ce72b22019-05-27 08:21:32 -0400695 CLIB_PREFETCH (b[2]->data, sizeof (ip0[0]), STORE);
696 CLIB_PREFETCH (b[3]->data, sizeof (ip0[0]), STORE);
697 }
698
699 ip0 = vlib_buffer_get_current (b[0]);
700 ip1 = vlib_buffer_get_current (b[1]);
701 lbi0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX];
702 lbi1 = vnet_buffer (b[1])->ip.adj_index[VLIB_TX];
703
704 lb0 = load_balance_get (lbi0);
705 lb1 = load_balance_get (lbi1);
706
707 /*
708 * this node is for via FIBs we can re-use the hash value from the
709 * to node if present.
710 * We don't want to use the same hash value at each level in the recursion
711 * graph as that would lead to polarisation
712 */
713 hc0 = hc1 = 0;
714
715 if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
Dave Barachd7cb1b52016-12-09 09:52:16 -0500716 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400717 if (PREDICT_TRUE (vnet_buffer (b[0])->ip.flow_hash))
Dave Barachd7cb1b52016-12-09 09:52:16 -0500718 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400719 hc0 = vnet_buffer (b[0])->ip.flow_hash =
720 vnet_buffer (b[0])->ip.flow_hash >> 1;
Neale Rannsf12a83f2017-04-18 09:09:40 -0700721 }
722 else
723 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400724 hc0 = vnet_buffer (b[0])->ip.flow_hash =
725 ip6_compute_flow_hash (ip0, lb0->lb_hash_config);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500726 }
Neale Ranns3ce72b22019-05-27 08:21:32 -0400727 dpo0 = load_balance_get_fwd_bucket
728 (lb0, (hc0 & (lb0->lb_n_buckets_minus_1)));
729 }
730 else
731 {
732 dpo0 = load_balance_get_bucket_i (lb0, 0);
733 }
734 if (PREDICT_FALSE (lb1->lb_n_buckets > 1))
735 {
736 if (PREDICT_TRUE (vnet_buffer (b[1])->ip.flow_hash))
Dave Barachd7cb1b52016-12-09 09:52:16 -0500737 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400738 hc1 = vnet_buffer (b[1])->ip.flow_hash =
739 vnet_buffer (b[1])->ip.flow_hash >> 1;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500740 }
Neale Rannsf12a83f2017-04-18 09:09:40 -0700741 else
742 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400743 hc1 = vnet_buffer (b[1])->ip.flow_hash =
744 ip6_compute_flow_hash (ip1, lb1->lb_hash_config);
Neale Rannsf12a83f2017-04-18 09:09:40 -0700745 }
Neale Ranns3ce72b22019-05-27 08:21:32 -0400746 dpo1 = load_balance_get_fwd_bucket
747 (lb1, (hc1 & (lb1->lb_n_buckets_minus_1)));
748 }
749 else
750 {
751 dpo1 = load_balance_get_bucket_i (lb1, 0);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500752 }
Neale Ranns2be95c12016-11-19 13:50:04 +0000753
Neale Ranns3ce72b22019-05-27 08:21:32 -0400754 next[0] = dpo0->dpoi_next_node;
755 next[1] = dpo1->dpoi_next_node;
756
757 /* Only process the HBH Option Header if explicitly configured to do so */
758 if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
Dave Barachd7cb1b52016-12-09 09:52:16 -0500759 {
Neale Ranns3ce72b22019-05-27 08:21:32 -0400760 next[0] = (dpo_is_adj (dpo0) && im->hbh_enabled) ?
761 (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next[0];
762 }
763 /* Only process the HBH Option Header if explicitly configured to do so */
764 if (PREDICT_FALSE (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
765 {
766 next[1] = (dpo_is_adj (dpo1) && im->hbh_enabled) ?
767 (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next[1];
Dave Barachd7cb1b52016-12-09 09:52:16 -0500768 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100769
Neale Ranns3ce72b22019-05-27 08:21:32 -0400770 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
771 vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
772
773 vlib_increment_combined_counter
774 (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b[0]));
775 vlib_increment_combined_counter
776 (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, b[1]));
777
778 b += 2;
779 next += 2;
780 n_left -= 2;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100781 }
782
Neale Ranns3ce72b22019-05-27 08:21:32 -0400783 while (n_left > 0)
784 {
785 const load_balance_t *lb0;
786 const ip6_header_t *ip0;
787 const dpo_id_t *dpo0;
788 u32 lbi0, hc0;
789
790 ip0 = vlib_buffer_get_current (b[0]);
791 lbi0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX];
792
793 lb0 = load_balance_get (lbi0);
794
795 hc0 = 0;
796 if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
797 {
798 if (PREDICT_TRUE (vnet_buffer (b[0])->ip.flow_hash))
799 {
800 hc0 = vnet_buffer (b[0])->ip.flow_hash =
801 vnet_buffer (b[0])->ip.flow_hash >> 1;
802 }
803 else
804 {
805 hc0 = vnet_buffer (b[0])->ip.flow_hash =
806 ip6_compute_flow_hash (ip0, lb0->lb_hash_config);
807 }
808 dpo0 = load_balance_get_fwd_bucket
809 (lb0, (hc0 & (lb0->lb_n_buckets_minus_1)));
810 }
811 else
812 {
813 dpo0 = load_balance_get_bucket_i (lb0, 0);
814 }
815
816 next[0] = dpo0->dpoi_next_node;
817 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
818
819 /* Only process the HBH Option Header if explicitly configured to do so */
820 if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
821 {
822 next[0] = (dpo_is_adj (dpo0) && im->hbh_enabled) ?
823 (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next[0];
824 }
825
826 vlib_increment_combined_counter
827 (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b[0]));
828
829 b += 1;
830 next += 1;
831 n_left -= 1;
832 }
833
834 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
835
Neale Rannsa71844f2018-11-08 07:31:36 -0800836 if (node->flags & VLIB_NODE_FLAG_TRACE)
837 ip6_forward_next_trace (vm, node, frame, VLIB_TX);
838
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100839 return frame->n_vectors;
Damjan Marionaca64c92016-04-13 09:48:56 +0200840}
841
Dave Barachd7cb1b52016-12-09 09:52:16 -0500842/* *INDENT-OFF* */
843VLIB_REGISTER_NODE (ip6_load_balance_node) =
844{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100845 .name = "ip6-load-balance",
Damjan Marionaca64c92016-04-13 09:48:56 +0200846 .vector_size = sizeof (u32),
Ole Troanf0f85222016-06-14 21:12:32 +0200847 .sibling_of = "ip6-lookup",
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100848 .format_trace = format_ip6_lookup_trace,
Damjan Marionaca64c92016-04-13 09:48:56 +0200849};
Dave Barachd7cb1b52016-12-09 09:52:16 -0500850/* *INDENT-ON* */
Damjan Marionaca64c92016-04-13 09:48:56 +0200851
Dave Barachd7cb1b52016-12-09 09:52:16 -0500852typedef struct
853{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700854 /* Adjacency taken. */
855 u32 adj_index;
856 u32 flow_hash;
John Lo2d343742016-01-19 17:27:17 -0500857 u32 fib_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700858
859 /* Packet data, possibly *after* rewrite. */
Dave Barachd7cb1b52016-12-09 09:52:16 -0500860 u8 packet_data[128 - 1 * sizeof (u32)];
861}
862ip6_forward_next_trace_t;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700863
Damjan Marion38173502019-02-13 19:30:09 +0100864#ifndef CLIB_MARCH_VARIANT
John Lo2b81eb82017-01-30 13:12:10 -0500865u8 *
Dave Barachd7cb1b52016-12-09 09:52:16 -0500866format_ip6_forward_next_trace (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700867{
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100868 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
869 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500870 ip6_forward_next_trace_t *t = va_arg (*args, ip6_forward_next_trace_t *);
Christophe Fontained3c008d2017-10-02 18:10:54 +0200871 u32 indent = format_get_indent (s);
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100872
Dave Barachd7cb1b52016-12-09 09:52:16 -0500873 s = format (s, "%U%U",
874 format_white_space, indent,
875 format_ip6_header, t->packet_data, sizeof (t->packet_data));
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100876 return s;
877}
Damjan Marion38173502019-02-13 19:30:09 +0100878#endif
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100879
Dave Barachd7cb1b52016-12-09 09:52:16 -0500880static u8 *
881format_ip6_lookup_trace (u8 * s, va_list * args)
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100882{
883 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
884 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500885 ip6_forward_next_trace_t *t = va_arg (*args, ip6_forward_next_trace_t *);
Christophe Fontained3c008d2017-10-02 18:10:54 +0200886 u32 indent = format_get_indent (s);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700887
John Loac8146c2016-09-27 17:44:02 -0400888 s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x",
Dave Barachd7cb1b52016-12-09 09:52:16 -0500889 t->fib_index, t->adj_index, t->flow_hash);
890 s = format (s, "\n%U%U",
891 format_white_space, indent,
892 format_ip6_header, t->packet_data, sizeof (t->packet_data));
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100893 return s;
894}
Pierre Pfister0febaf12016-06-08 12:23:21 +0100895
Ed Warnickecb9cada2015-12-08 15:45:58 -0700896
Dave Barachd7cb1b52016-12-09 09:52:16 -0500897static u8 *
898format_ip6_rewrite_trace (u8 * s, va_list * args)
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100899{
900 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
901 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500902 ip6_forward_next_trace_t *t = va_arg (*args, ip6_forward_next_trace_t *);
Christophe Fontained3c008d2017-10-02 18:10:54 +0200903 u32 indent = format_get_indent (s);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700904
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100905 s = format (s, "tx_sw_if_index %d adj-idx %d : %U flow hash: 0x%08x",
Dave Barachd7cb1b52016-12-09 09:52:16 -0500906 t->fib_index, t->adj_index, format_ip_adjacency,
907 t->adj_index, FORMAT_IP_ADJACENCY_NONE, t->flow_hash);
Pierre Pfistera38c3df2016-06-13 10:28:09 +0100908 s = format (s, "\n%U%U",
Dave Barachd7cb1b52016-12-09 09:52:16 -0500909 format_white_space, indent,
910 format_ip_adjacency_packet_data,
Neale Ranns0b6a8572019-10-30 17:34:14 +0000911 t->packet_data, sizeof (t->packet_data));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700912 return s;
913}
914
915/* Common trace function for all ip6-forward next nodes. */
Damjan Marion38173502019-02-13 19:30:09 +0100916#ifndef CLIB_MARCH_VARIANT
Ed Warnickecb9cada2015-12-08 15:45:58 -0700917void
918ip6_forward_next_trace (vlib_main_t * vm,
919 vlib_node_runtime_t * node,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500920 vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700921{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500922 u32 *from, n_left;
923 ip6_main_t *im = &ip6_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700924
925 n_left = frame->n_vectors;
926 from = vlib_frame_vector_args (frame);
Pierre Pfister0febaf12016-06-08 12:23:21 +0100927
Ed Warnickecb9cada2015-12-08 15:45:58 -0700928 while (n_left >= 4)
929 {
930 u32 bi0, bi1;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500931 vlib_buffer_t *b0, *b1;
932 ip6_forward_next_trace_t *t0, *t1;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700933
934 /* Prefetch next iteration. */
935 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
936 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
937
938 bi0 = from[0];
939 bi1 = from[1];
940
941 b0 = vlib_get_buffer (vm, bi0);
942 b1 = vlib_get_buffer (vm, bi1);
943
944 if (b0->flags & VLIB_BUFFER_IS_TRACED)
945 {
946 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
947 t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
Dave Barachd7cb1b52016-12-09 09:52:16 -0500948 t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
949 t0->fib_index =
950 (vnet_buffer (b0)->sw_if_index[VLIB_TX] !=
951 (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] :
952 vec_elt (im->fib_index_by_sw_if_index,
953 vnet_buffer (b0)->sw_if_index[VLIB_RX]);
Pierre Pfister0febaf12016-06-08 12:23:21 +0100954
Dave Barach178cf492018-11-13 16:34:13 -0500955 clib_memcpy_fast (t0->packet_data,
956 vlib_buffer_get_current (b0),
957 sizeof (t0->packet_data));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700958 }
959 if (b1->flags & VLIB_BUFFER_IS_TRACED)
960 {
961 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
962 t1->adj_index = vnet_buffer (b1)->ip.adj_index[which_adj_index];
Dave Barachd7cb1b52016-12-09 09:52:16 -0500963 t1->flow_hash = vnet_buffer (b1)->ip.flow_hash;
964 t1->fib_index =
965 (vnet_buffer (b1)->sw_if_index[VLIB_TX] !=
966 (u32) ~ 0) ? vnet_buffer (b1)->sw_if_index[VLIB_TX] :
967 vec_elt (im->fib_index_by_sw_if_index,
968 vnet_buffer (b1)->sw_if_index[VLIB_RX]);
Pierre Pfister0febaf12016-06-08 12:23:21 +0100969
Dave Barach178cf492018-11-13 16:34:13 -0500970 clib_memcpy_fast (t1->packet_data,
971 vlib_buffer_get_current (b1),
972 sizeof (t1->packet_data));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700973 }
974 from += 2;
975 n_left -= 2;
976 }
977
978 while (n_left >= 1)
979 {
980 u32 bi0;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500981 vlib_buffer_t *b0;
982 ip6_forward_next_trace_t *t0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700983
984 bi0 = from[0];
985
986 b0 = vlib_get_buffer (vm, bi0);
987
988 if (b0->flags & VLIB_BUFFER_IS_TRACED)
989 {
990 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
991 t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
Dave Barachd7cb1b52016-12-09 09:52:16 -0500992 t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
993 t0->fib_index =
994 (vnet_buffer (b0)->sw_if_index[VLIB_TX] !=
995 (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] :
996 vec_elt (im->fib_index_by_sw_if_index,
997 vnet_buffer (b0)->sw_if_index[VLIB_RX]);
Pierre Pfister0febaf12016-06-08 12:23:21 +0100998
Dave Barach178cf492018-11-13 16:34:13 -0500999 clib_memcpy_fast (t0->packet_data,
1000 vlib_buffer_get_current (b0),
1001 sizeof (t0->packet_data));
Ed Warnickecb9cada2015-12-08 15:45:58 -07001002 }
1003 from += 1;
1004 n_left -= 1;
1005 }
1006}
1007
Ed Warnickecb9cada2015-12-08 15:45:58 -07001008/* Compute TCP/UDP/ICMP6 checksum in software. */
Dave Barachd7cb1b52016-12-09 09:52:16 -05001009u16
1010ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0,
1011 ip6_header_t * ip0, int *bogus_lengthp)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001012{
1013 ip_csum_t sum0;
Srikanth A02833ff2019-10-02 17:48:58 -07001014 u16 payload_length_host_byte_order;
1015 u32 i;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001016 u32 headers_size = sizeof (ip0[0]);
Dave Barachc4abafd2019-09-04 12:09:32 -04001017 u8 *data_this_buffer;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001018
Dave Barachd7cb1b52016-12-09 09:52:16 -05001019 ASSERT (bogus_lengthp);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001020 *bogus_lengthp = 0;
1021
1022 /* Initialize checksum with ip header. */
1023 sum0 = ip0->payload_length + clib_host_to_net_u16 (ip0->protocol);
1024 payload_length_host_byte_order = clib_net_to_host_u16 (ip0->payload_length);
Dave Barachc4abafd2019-09-04 12:09:32 -04001025 data_this_buffer = (u8 *) (ip0 + 1);
Dave Barach75fc8542016-10-11 16:16:02 -04001026
Ed Warnickecb9cada2015-12-08 15:45:58 -07001027 for (i = 0; i < ARRAY_LEN (ip0->src_address.as_uword); i++)
1028 {
Srikanth A02833ff2019-10-02 17:48:58 -07001029 sum0 = ip_csum_with_carry
1030 (sum0, clib_mem_unaligned (&ip0->src_address.as_uword[i], uword));
1031 sum0 = ip_csum_with_carry
1032 (sum0, clib_mem_unaligned (&ip0->dst_address.as_uword[i], uword));
Ed Warnickecb9cada2015-12-08 15:45:58 -07001033 }
1034
AkshayaNadahalli1b563522017-01-23 22:05:35 +05301035 /* some icmp packets may come with a "router alert" hop-by-hop extension header (e.g., mldv2 packets)
1036 * or UDP-Ping packets */
Dave Barachd7cb1b52016-12-09 09:52:16 -05001037 if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
Ed Warnickecb9cada2015-12-08 15:45:58 -07001038 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05001039 u32 skip_bytes;
1040 ip6_hop_by_hop_ext_t *ext_hdr =
1041 (ip6_hop_by_hop_ext_t *) data_this_buffer;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001042
1043 /* validate really icmp6 next */
AkshayaNadahalli1b563522017-01-23 22:05:35 +05301044 ASSERT ((ext_hdr->next_hdr == IP_PROTOCOL_ICMP6)
1045 || (ext_hdr->next_hdr == IP_PROTOCOL_UDP));
Ed Warnickecb9cada2015-12-08 15:45:58 -07001046
Dave Barachd7cb1b52016-12-09 09:52:16 -05001047 skip_bytes = 8 * (1 + ext_hdr->n_data_u64s);
1048 data_this_buffer = (void *) ((u8 *) data_this_buffer + skip_bytes);
Dave Barach75fc8542016-10-11 16:16:02 -04001049
Dave Barachd7cb1b52016-12-09 09:52:16 -05001050 payload_length_host_byte_order -= skip_bytes;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001051 headers_size += skip_bytes;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001052 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07001053
John Lo3bc6bc22019-08-03 14:36:39 -04001054 if (p0)
Srikanth A02833ff2019-10-02 17:48:58 -07001055 return ip_calculate_l4_checksum (vm, p0, sum0,
1056 payload_length_host_byte_order,
1057 (u8 *) ip0, headers_size, NULL);
1058 else
1059 return ip_calculate_l4_checksum (vm, 0, sum0,
1060 payload_length_host_byte_order, NULL, 0,
1061 data_this_buffer);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001062}
1063
Dave Barachd7cb1b52016-12-09 09:52:16 -05001064u32
1065ip6_tcp_udp_icmp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001066{
Dave Barachd7cb1b52016-12-09 09:52:16 -05001067 ip6_header_t *ip0 = vlib_buffer_get_current (p0);
1068 udp_header_t *udp0;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001069 u16 sum16;
1070 int bogus_length;
1071
1072 /* some icmp packets may come with a "router alert" hop-by-hop extension header (e.g., mldv2 packets) */
1073 ASSERT (ip0->protocol == IP_PROTOCOL_TCP
1074 || ip0->protocol == IP_PROTOCOL_ICMP6
1075 || ip0->protocol == IP_PROTOCOL_UDP
Dave Barachd7cb1b52016-12-09 09:52:16 -05001076 || ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001077
1078 udp0 = (void *) (ip0 + 1);
1079 if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0)
1080 {
Damjan Marion213b5aa2017-07-13 21:19:27 +02001081 p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED
1082 | VNET_BUFFER_F_L4_CHECKSUM_CORRECT);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001083 return p0->flags;
1084 }
1085
1086 sum16 = ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0, &bogus_length);
1087
Damjan Marion213b5aa2017-07-13 21:19:27 +02001088 p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED
1089 | ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT));
Ed Warnickecb9cada2015-12-08 15:45:58 -07001090
1091 return p0->flags;
1092}
Damjan Marion38173502019-02-13 19:30:09 +01001093#endif
Ed Warnickecb9cada2015-12-08 15:45:58 -07001094
AkshayaNadahalli0f438df2017-02-10 10:54:16 +05301095/**
1096 * @brief returns number of links on which src is reachable.
1097 */
1098always_inline int
1099ip6_urpf_loose_check (ip6_main_t * im, vlib_buffer_t * b, ip6_header_t * i)
1100{
1101 const load_balance_t *lb0;
1102 index_t lbi;
Florin Corasf3a3bad2018-03-28 02:18:29 -07001103 u32 fib_index;
AkshayaNadahalli0f438df2017-02-10 10:54:16 +05301104
Florin Corasf3a3bad2018-03-28 02:18:29 -07001105 fib_index = vec_elt (im->fib_index_by_sw_if_index,
1106 vnet_buffer (b)->sw_if_index[VLIB_RX]);
1107 fib_index =
1108 (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
1109 fib_index : vnet_buffer (b)->sw_if_index[VLIB_TX];
AkshayaNadahalli0f438df2017-02-10 10:54:16 +05301110
Simon Zhange7eba482019-08-25 15:30:45 +08001111 lbi = ip6_fib_table_fwding_lookup (fib_index, &i->src_address);
AkshayaNadahalli0f438df2017-02-10 10:54:16 +05301112 lb0 = load_balance_get (lbi);
1113
1114 return (fib_urpf_check_size (lb0->lb_urpf));
1115}
1116
rootc9d1c5b2017-08-15 12:58:31 -04001117always_inline u8
1118ip6_next_proto_is_tcp_udp (vlib_buffer_t * p0, ip6_header_t * ip0,
1119 u32 * udp_offset0)
1120{
1121 u32 proto0;
1122 proto0 = ip6_locate_header (p0, ip0, IP_PROTOCOL_UDP, udp_offset0);
1123 if (proto0 != IP_PROTOCOL_UDP)
1124 {
1125 proto0 = ip6_locate_header (p0, ip0, IP_PROTOCOL_TCP, udp_offset0);
1126 proto0 = (proto0 == IP_PROTOCOL_TCP) ? proto0 : 0;
1127 }
1128 return proto0;
1129}
1130
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001131/* *INDENT-OFF* */
1132VNET_FEATURE_ARC_INIT (ip6_local) =
1133{
1134 .arc_name = "ip6-local",
1135 .start_nodes = VNET_FEATURES ("ip6-local"),
1136};
1137/* *INDENT-ON* */
1138
Benoît Ganne26a10192019-02-14 15:32:45 +01001139always_inline uword
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001140ip6_local_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1141 vlib_frame_t * frame, int head_of_feature_arc)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001142{
Dave Barachd7cb1b52016-12-09 09:52:16 -05001143 ip6_main_t *im = &ip6_main;
1144 ip_lookup_main_t *lm = &im->lookup_main;
Benoît Ganne26a10192019-02-14 15:32:45 +01001145 u32 *from, n_left_from;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001146 vlib_node_runtime_t *error_node =
1147 vlib_node_get_runtime (vm, ip6_input_node.index);
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001148 u8 arc_index = vnet_feat_arc_ip6_local.feature_arc_index;
Benoît Ganne26a10192019-02-14 15:32:45 +01001149 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
1150 u16 nexts[VLIB_FRAME_SIZE], *next;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001151
1152 from = vlib_frame_vector_args (frame);
1153 n_left_from = frame->n_vectors;
Dave Barach75fc8542016-10-11 16:16:02 -04001154
Ed Warnickecb9cada2015-12-08 15:45:58 -07001155 if (node->flags & VLIB_NODE_FLAG_TRACE)
1156 ip6_forward_next_trace (vm, node, frame, VLIB_TX);
1157
Benoît Ganne26a10192019-02-14 15:32:45 +01001158 vlib_get_buffers (vm, from, bufs, n_left_from);
1159 b = bufs;
1160 next = nexts;
1161
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001162 while (n_left_from > 2)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001163 {
Benoît Ganne26a10192019-02-14 15:32:45 +01001164 /* Prefetch next iteration. */
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001165 if (n_left_from >= 6)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001166 {
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001167 vlib_prefetch_buffer_header (b[4], STORE);
1168 vlib_prefetch_buffer_header (b[5], STORE);
1169 vlib_prefetch_buffer_data (b[2], LOAD);
1170 vlib_prefetch_buffer_data (b[3], LOAD);
Benoît Ganne26a10192019-02-14 15:32:45 +01001171 }
Dave Barach75fc8542016-10-11 16:16:02 -04001172
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001173 u8 error[2];
1174 error[0] = IP6_ERROR_UNKNOWN_PROTOCOL;
1175 error[1] = IP6_ERROR_UNKNOWN_PROTOCOL;
Dave Barach75fc8542016-10-11 16:16:02 -04001176
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001177 ip6_header_t *ip[2];
1178 ip[0] = vlib_buffer_get_current (b[0]);
1179 ip[1] = vlib_buffer_get_current (b[1]);
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001180
Benoît Ganne26a10192019-02-14 15:32:45 +01001181 if (head_of_feature_arc)
1182 {
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001183 vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data;
1184 vnet_buffer (b[1])->l3_hdr_offset = b[1]->current_data;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001185
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001186 u8 type[2];
1187 type[0] = lm->builtin_protocol_by_ip_protocol[ip[0]->protocol];
1188 type[1] = lm->builtin_protocol_by_ip_protocol[ip[1]->protocol];
Ed Warnickecb9cada2015-12-08 15:45:58 -07001189
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001190 u32 flags[2];
1191 flags[0] = b[0]->flags;
1192 flags[1] = b[1]->flags;
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001193
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001194 u32 good_l4_csum[2];
1195 good_l4_csum[0] =
1196 flags[0] & (VNET_BUFFER_F_L4_CHECKSUM_CORRECT |
1197 VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
1198 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM);
1199 good_l4_csum[1] =
1200 flags[1] & (VNET_BUFFER_F_L4_CHECKSUM_CORRECT |
Benoît Ganne26a10192019-02-14 15:32:45 +01001201 VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
1202 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM);
Filip Tehlarb601f222017-01-02 10:22:56 +01001203
Damjan Marion34e823f2019-02-19 08:55:18 +01001204 u32 udp_offset[2] = { };
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001205 u8 is_tcp_udp[2];
1206 is_tcp_udp[0] =
1207 ip6_next_proto_is_tcp_udp (b[0], ip[0], &udp_offset[0]);
1208 is_tcp_udp[1] =
1209 ip6_next_proto_is_tcp_udp (b[1], ip[1], &udp_offset[1]);
1210 i16 len_diff[2] = { 0 };
1211 if (PREDICT_TRUE (is_tcp_udp[0]))
Shwethab78292e2016-09-13 11:51:00 +01001212 {
Benoît Ganne26a10192019-02-14 15:32:45 +01001213 udp_header_t *udp =
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001214 (udp_header_t *) ((u8 *) ip[0] + udp_offset[0]);
1215 good_l4_csum[0] |= type[0] == IP_BUILTIN_PROTOCOL_UDP
Benoît Ganne26a10192019-02-14 15:32:45 +01001216 && udp->checksum == 0;
1217 /* optimistically verify UDP length. */
1218 u16 ip_len, udp_len;
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001219 ip_len = clib_net_to_host_u16 (ip[0]->payload_length);
Benoît Ganne26a10192019-02-14 15:32:45 +01001220 udp_len = clib_net_to_host_u16 (udp->length);
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001221 len_diff[0] = ip_len - udp_len;
Shwethab78292e2016-09-13 11:51:00 +01001222 }
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001223 if (PREDICT_TRUE (is_tcp_udp[1]))
Ed Warnickecb9cada2015-12-08 15:45:58 -07001224 {
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001225 udp_header_t *udp =
1226 (udp_header_t *) ((u8 *) ip[1] + udp_offset[1]);
1227 good_l4_csum[1] |= type[1] == IP_BUILTIN_PROTOCOL_UDP
1228 && udp->checksum == 0;
1229 /* optimistically verify UDP length. */
1230 u16 ip_len, udp_len;
1231 ip_len = clib_net_to_host_u16 (ip[1]->payload_length);
1232 udp_len = clib_net_to_host_u16 (udp->length);
1233 len_diff[1] = ip_len - udp_len;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001234 }
1235
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001236 good_l4_csum[0] |= type[0] == IP_BUILTIN_PROTOCOL_UNKNOWN;
1237 good_l4_csum[1] |= type[1] == IP_BUILTIN_PROTOCOL_UNKNOWN;
1238
1239 len_diff[0] = type[0] == IP_BUILTIN_PROTOCOL_UDP ? len_diff[0] : 0;
1240 len_diff[1] = type[1] == IP_BUILTIN_PROTOCOL_UDP ? len_diff[1] : 0;
1241
1242 u8 need_csum[2];
1243 need_csum[0] = type[0] != IP_BUILTIN_PROTOCOL_UNKNOWN
1244 && !good_l4_csum[0]
1245 && !(flags[0] & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED);
1246 need_csum[1] = type[1] != IP_BUILTIN_PROTOCOL_UNKNOWN
1247 && !good_l4_csum[1]
1248 && !(flags[1] & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED);
1249 if (PREDICT_FALSE (need_csum[0]))
1250 {
1251 flags[0] = ip6_tcp_udp_icmp_validate_checksum (vm, b[0]);
1252 good_l4_csum[0] = flags[0] & VNET_BUFFER_F_L4_CHECKSUM_CORRECT;
1253 }
1254 if (PREDICT_FALSE (need_csum[1]))
1255 {
1256 flags[1] = ip6_tcp_udp_icmp_validate_checksum (vm, b[1]);
1257 good_l4_csum[1] = flags[1] & VNET_BUFFER_F_L4_CHECKSUM_CORRECT;
1258 }
1259
1260 error[0] = IP6_ERROR_UNKNOWN_PROTOCOL;
1261 error[0] = len_diff[0] < 0 ? IP6_ERROR_UDP_LENGTH : error[0];
1262 error[1] = IP6_ERROR_UNKNOWN_PROTOCOL;
1263 error[1] = len_diff[1] < 0 ? IP6_ERROR_UDP_LENGTH : error[1];
Ed Warnickecb9cada2015-12-08 15:45:58 -07001264
Benoît Ganne26a10192019-02-14 15:32:45 +01001265 STATIC_ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP ==
1266 IP6_ERROR_UDP_CHECKSUM,
1267 "Wrong IP6 errors constants");
1268 STATIC_ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP ==
1269 IP6_ERROR_ICMP_CHECKSUM,
1270 "Wrong IP6 errors constants");
1271
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001272 error[0] =
1273 !good_l4_csum[0] ? IP6_ERROR_UDP_CHECKSUM + type[0] : error[0];
1274 error[1] =
1275 !good_l4_csum[1] ? IP6_ERROR_UDP_CHECKSUM + type[1] : error[1];
Ed Warnickecb9cada2015-12-08 15:45:58 -07001276
1277 /* Drop packets from unroutable hosts. */
Dave Barachd7cb1b52016-12-09 09:52:16 -05001278 /* If this is a neighbor solicitation (ICMP), skip source RPF check */
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001279 u8 unroutable[2];
1280 unroutable[0] = error[0] == IP6_ERROR_UNKNOWN_PROTOCOL
1281 && type[0] != IP_BUILTIN_PROTOCOL_ICMP
1282 && !ip6_address_is_link_local_unicast (&ip[0]->src_address);
1283 unroutable[1] = error[1] == IP6_ERROR_UNKNOWN_PROTOCOL
1284 && type[1] != IP_BUILTIN_PROTOCOL_ICMP
1285 && !ip6_address_is_link_local_unicast (&ip[1]->src_address);
1286 if (PREDICT_FALSE (unroutable[0]))
Ed Warnickecb9cada2015-12-08 15:45:58 -07001287 {
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001288 error[0] =
1289 !ip6_urpf_loose_check (im, b[0],
1290 ip[0]) ? IP6_ERROR_SRC_LOOKUP_MISS
1291 : error[0];
1292 }
1293 if (PREDICT_FALSE (unroutable[1]))
1294 {
1295 error[1] =
1296 !ip6_urpf_loose_check (im, b[1],
1297 ip[1]) ? IP6_ERROR_SRC_LOOKUP_MISS
1298 : error[1];
Ed Warnickecb9cada2015-12-08 15:45:58 -07001299 }
1300
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001301 vnet_buffer (b[0])->ip.fib_index =
1302 vnet_buffer (b[0])->sw_if_index[VLIB_TX] != ~0 ?
1303 vnet_buffer (b[0])->sw_if_index[VLIB_TX] :
1304 vnet_buffer (b[0])->ip.fib_index;
1305 vnet_buffer (b[1])->ip.fib_index =
1306 vnet_buffer (b[1])->sw_if_index[VLIB_TX] != ~0 ?
1307 vnet_buffer (b[1])->sw_if_index[VLIB_TX] :
1308 vnet_buffer (b[1])->ip.fib_index;
Benoît Ganne26a10192019-02-14 15:32:45 +01001309 } /* head_of_feature_arc */
Florin Corascea194d2017-10-02 00:18:51 -07001310
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001311 next[0] = lm->local_next_by_ip_protocol[ip[0]->protocol];
1312 next[0] =
1313 error[0] != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next[0];
1314 next[1] = lm->local_next_by_ip_protocol[ip[1]->protocol];
1315 next[1] =
1316 error[1] != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next[1];
Florin Corascea194d2017-10-02 00:18:51 -07001317
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001318 b[0]->error = error_node->errors[0];
1319 b[1]->error = error_node->errors[1];
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001320
Benoît Ganne26a10192019-02-14 15:32:45 +01001321 if (head_of_feature_arc)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001322 {
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001323 u8 ip6_unknown[2];
1324 ip6_unknown[0] = error[0] == (u8) IP6_ERROR_UNKNOWN_PROTOCOL;
1325 ip6_unknown[1] = error[1] == (u8) IP6_ERROR_UNKNOWN_PROTOCOL;
1326 if (PREDICT_TRUE (ip6_unknown[0]))
Shwethab78292e2016-09-13 11:51:00 +01001327 {
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001328 u32 next32 = next[0];
Benoît Ganne26a10192019-02-14 15:32:45 +01001329 vnet_feature_arc_start (arc_index,
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001330 vnet_buffer (b[0])->sw_if_index
1331 [VLIB_RX], &next32, b[0]);
1332 next[0] = next32;
1333 }
1334 if (PREDICT_TRUE (ip6_unknown[1]))
1335 {
1336 u32 next32 = next[1];
1337 vnet_feature_arc_start (arc_index,
1338 vnet_buffer (b[1])->sw_if_index
1339 [VLIB_RX], &next32, b[1]);
1340 next[1] = next32;
Shwethab78292e2016-09-13 11:51:00 +01001341 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07001342 }
Dave Barach75fc8542016-10-11 16:16:02 -04001343
Benoît Ganne26a10192019-02-14 15:32:45 +01001344 /* next */
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001345 b += 2;
1346 next += 2;
1347 n_left_from -= 2;
Benoît Ganne26a10192019-02-14 15:32:45 +01001348 }
Benoît Ganne7dcb80a2019-02-14 15:32:45 +01001349
Benoît Ganne26a10192019-02-14 15:32:45 +01001350 while (n_left_from)
1351 {
1352 u8 error;
1353 error = IP6_ERROR_UNKNOWN_PROTOCOL;
1354
1355 ip6_header_t *ip;
1356 ip = vlib_buffer_get_current (b[0]);
1357
1358 if (head_of_feature_arc)
1359 {
1360 vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data;
1361 u8 type = lm->builtin_protocol_by_ip_protocol[ip->protocol];
1362
1363 u32 flags = b[0]->flags;
1364 u32 good_l4_csum =
1365 flags & (VNET_BUFFER_F_L4_CHECKSUM_CORRECT |
1366 VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
1367 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM);
1368
1369 u32 udp_offset;
1370 i16 len_diff = 0;
1371 u8 is_tcp_udp = ip6_next_proto_is_tcp_udp (b[0], ip, &udp_offset);
1372 if (PREDICT_TRUE (is_tcp_udp))
1373 {
1374 udp_header_t *udp = (udp_header_t *) ((u8 *) ip + udp_offset);
1375 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1376 good_l4_csum |= type == IP_BUILTIN_PROTOCOL_UDP
1377 && udp->checksum == 0;
1378 /* optimistically verify UDP length. */
1379 u16 ip_len, udp_len;
1380 ip_len = clib_net_to_host_u16 (ip->payload_length);
1381 udp_len = clib_net_to_host_u16 (udp->length);
1382 len_diff = ip_len - udp_len;
1383 }
1384
1385 good_l4_csum |= type == IP_BUILTIN_PROTOCOL_UNKNOWN;
1386 len_diff = type == IP_BUILTIN_PROTOCOL_UDP ? len_diff : 0;
1387
1388 u8 need_csum = type != IP_BUILTIN_PROTOCOL_UNKNOWN && !good_l4_csum
1389 && !(flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED);
1390 if (PREDICT_FALSE (need_csum))
1391 {
1392 flags = ip6_tcp_udp_icmp_validate_checksum (vm, b[0]);
1393 good_l4_csum = flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT;
1394 }
1395
1396 error = IP6_ERROR_UNKNOWN_PROTOCOL;
1397 error = len_diff < 0 ? IP6_ERROR_UDP_LENGTH : error;
1398
1399 STATIC_ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP ==
1400 IP6_ERROR_UDP_CHECKSUM,
1401 "Wrong IP6 errors constants");
1402 STATIC_ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP ==
1403 IP6_ERROR_ICMP_CHECKSUM,
1404 "Wrong IP6 errors constants");
1405
1406 error = !good_l4_csum ? IP6_ERROR_UDP_CHECKSUM + type : error;
1407
1408 /* Drop packets from unroutable hosts. */
1409 /* If this is a neighbor solicitation (ICMP), skip source RPF check */
1410 u8 unroutable = error == IP6_ERROR_UNKNOWN_PROTOCOL
1411 && type != IP_BUILTIN_PROTOCOL_ICMP
1412 && !ip6_address_is_link_local_unicast (&ip->src_address);
1413 if (PREDICT_FALSE (unroutable))
1414 {
1415 error =
1416 !ip6_urpf_loose_check (im, b[0],
1417 ip) ? IP6_ERROR_SRC_LOOKUP_MISS :
1418 error;
1419 }
1420
1421 vnet_buffer (b[0])->ip.fib_index =
1422 vnet_buffer (b[0])->sw_if_index[VLIB_TX] != ~0 ?
1423 vnet_buffer (b[0])->sw_if_index[VLIB_TX] :
1424 vnet_buffer (b[0])->ip.fib_index;
1425 } /* head_of_feature_arc */
1426
1427 next[0] = lm->local_next_by_ip_protocol[ip->protocol];
1428 next[0] =
1429 error != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next[0];
1430
1431 b[0]->error = error_node->errors[0];
1432
1433 if (head_of_feature_arc)
1434 {
1435 if (PREDICT_TRUE (error == (u8) IP6_ERROR_UNKNOWN_PROTOCOL))
1436 {
1437 u32 next32 = next[0];
1438 vnet_feature_arc_start (arc_index,
1439 vnet_buffer (b[0])->sw_if_index
1440 [VLIB_RX], &next32, b[0]);
1441 next[0] = next32;
1442 }
1443 }
1444
1445 /* next */
1446 b += 1;
1447 next += 1;
1448 n_left_from -= 1;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001449 }
1450
Benoît Ganne26a10192019-02-14 15:32:45 +01001451 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001452 return frame->n_vectors;
1453}
1454
Damjan Marion38173502019-02-13 19:30:09 +01001455VLIB_NODE_FN (ip6_local_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
1456 vlib_frame_t * frame)
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001457{
1458 return ip6_local_inline (vm, node, frame, 1 /* head of feature arc */ );
1459}
1460
Dave Barachd7cb1b52016-12-09 09:52:16 -05001461/* *INDENT-OFF* */
Damjan Marion38173502019-02-13 19:30:09 +01001462VLIB_REGISTER_NODE (ip6_local_node) =
Dave Barachd7cb1b52016-12-09 09:52:16 -05001463{
Ed Warnickecb9cada2015-12-08 15:45:58 -07001464 .name = "ip6-local",
1465 .vector_size = sizeof (u32),
Ed Warnickecb9cada2015-12-08 15:45:58 -07001466 .format_trace = format_ip6_forward_next_trace,
Ed Warnickecb9cada2015-12-08 15:45:58 -07001467 .n_next_nodes = IP_LOCAL_N_NEXT,
Dave Barachd7cb1b52016-12-09 09:52:16 -05001468 .next_nodes =
1469 {
Neale Rannsd91c1db2017-07-31 02:30:50 -07001470 [IP_LOCAL_NEXT_DROP] = "ip6-drop",
1471 [IP_LOCAL_NEXT_PUNT] = "ip6-punt",
Ed Warnickecb9cada2015-12-08 15:45:58 -07001472 [IP_LOCAL_NEXT_UDP_LOOKUP] = "ip6-udp-lookup",
1473 [IP_LOCAL_NEXT_ICMP] = "ip6-icmp-input",
Klement Sekera896c8962019-06-24 11:52:49 +00001474 [IP_LOCAL_NEXT_REASSEMBLY] = "ip6-full-reassembly",
Ed Warnickecb9cada2015-12-08 15:45:58 -07001475 },
1476};
Dave Barachd7cb1b52016-12-09 09:52:16 -05001477/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -07001478
Damjan Marion38173502019-02-13 19:30:09 +01001479VLIB_NODE_FN (ip6_local_end_of_arc_node) (vlib_main_t * vm,
1480 vlib_node_runtime_t * node,
1481 vlib_frame_t * frame)
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001482{
1483 return ip6_local_inline (vm, node, frame, 0 /* head of feature arc */ );
1484}
1485
1486/* *INDENT-OFF* */
Damjan Marion38173502019-02-13 19:30:09 +01001487VLIB_REGISTER_NODE (ip6_local_end_of_arc_node) = {
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001488 .name = "ip6-local-end-of-arc",
1489 .vector_size = sizeof (u32),
1490
1491 .format_trace = format_ip6_forward_next_trace,
1492 .sibling_of = "ip6-local",
1493};
1494
Pierre Pfister1bfd3722017-09-18 11:40:32 +02001495VNET_FEATURE_INIT (ip6_local_end_of_arc, static) = {
1496 .arc_name = "ip6-local",
1497 .node_name = "ip6-local-end-of-arc",
1498 .runs_before = 0, /* not before any other features */
1499};
1500/* *INDENT-ON* */
1501
Damjan Marion38173502019-02-13 19:30:09 +01001502#ifdef CLIB_MARCH_VARIANT
1503extern vlib_node_registration_t ip6_local_node;
1504
1505#else
1506
Dave Barachd7cb1b52016-12-09 09:52:16 -05001507void
1508ip6_register_protocol (u32 protocol, u32 node_index)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001509{
Dave Barachd7cb1b52016-12-09 09:52:16 -05001510 vlib_main_t *vm = vlib_get_main ();
1511 ip6_main_t *im = &ip6_main;
1512 ip_lookup_main_t *lm = &im->lookup_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001513
1514 ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol));
Dave Barachd7cb1b52016-12-09 09:52:16 -05001515 lm->local_next_by_ip_protocol[protocol] =
1516 vlib_node_add_next (vm, ip6_local_node.index, node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001517}
1518
Neale Rannsb538dd82019-05-21 06:54:54 -07001519void
1520ip6_unregister_protocol (u32 protocol)
1521{
1522 ip6_main_t *im = &ip6_main;
1523 ip_lookup_main_t *lm = &im->lookup_main;
1524
1525 ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol));
1526 lm->local_next_by_ip_protocol[protocol] = IP_LOCAL_NEXT_PUNT;
1527}
1528
Ed Warnickecb9cada2015-12-08 15:45:58 -07001529clib_error_t *
John Lo86376342018-06-11 20:14:49 -04001530ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, u32 sw_if_index,
1531 u8 refresh)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001532{
Dave Barachd7cb1b52016-12-09 09:52:16 -05001533 vnet_main_t *vnm = vnet_get_main ();
1534 ip6_main_t *im = &ip6_main;
1535 icmp6_neighbor_solicitation_header_t *h;
1536 ip6_address_t *src;
1537 ip_interface_address_t *ia;
1538 ip_adjacency_t *adj;
1539 vnet_hw_interface_t *hi;
1540 vnet_sw_interface_t *si;
1541 vlib_buffer_t *b;
Neale Ranns7a272742017-05-30 02:08:14 -07001542 adj_index_t ai;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001543 u32 bi = 0;
1544 int bogus_length;
1545
1546 si = vnet_get_sw_interface (vnm, sw_if_index);
1547
1548 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
1549 {
1550 return clib_error_return (0, "%U: interface %U down",
Dave Barachd7cb1b52016-12-09 09:52:16 -05001551 format_ip6_address, dst,
1552 format_vnet_sw_if_index_name, vnm,
1553 sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001554 }
1555
Dave Barachd7cb1b52016-12-09 09:52:16 -05001556 src =
1557 ip6_interface_address_matching_destination (im, dst, sw_if_index, &ia);
1558 if (!src)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001559 {
1560 vnm->api_errno = VNET_API_ERROR_NO_MATCHING_INTERFACE;
Dave Barach75fc8542016-10-11 16:16:02 -04001561 return clib_error_return
Dave Barachd7cb1b52016-12-09 09:52:16 -05001562 (0, "no matching interface address for destination %U (interface %U)",
1563 format_ip6_address, dst,
1564 format_vnet_sw_if_index_name, vnm, sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001565 }
1566
Dave Barachd7cb1b52016-12-09 09:52:16 -05001567 h =
1568 vlib_packet_template_get_packet (vm,
1569 &im->discover_neighbor_packet_template,
1570 &bi);
John Lo084606b2018-06-19 15:27:48 -04001571 if (!h)
1572 return clib_error_return (0, "ICMP6 NS packet allocation failed");
Ed Warnickecb9cada2015-12-08 15:45:58 -07001573
1574 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1575
1576 /* Destination address is a solicited node multicast address. We need to fill in
1577 the low 24 bits with low 24 bits of target's address. */
1578 h->ip.dst_address.as_u8[13] = dst->as_u8[13];
1579 h->ip.dst_address.as_u8[14] = dst->as_u8[14];
1580 h->ip.dst_address.as_u8[15] = dst->as_u8[15];
1581
1582 h->ip.src_address = src[0];
1583 h->neighbor.target_address = dst[0];
1584
Pavel Kotucek57808982017-08-02 08:20:19 +02001585 if (PREDICT_FALSE (!hi->hw_address))
1586 {
1587 return clib_error_return (0, "%U: interface %U do not support ip probe",
1588 format_ip6_address, dst,
1589 format_vnet_sw_if_index_name, vnm,
1590 sw_if_index);
1591 }
1592
Dave Barach178cf492018-11-13 16:34:13 -05001593 clib_memcpy_fast (h->link_layer_option.ethernet_address, hi->hw_address,
1594 vec_len (hi->hw_address));
Ed Warnickecb9cada2015-12-08 15:45:58 -07001595
Dave Barach75fc8542016-10-11 16:16:02 -04001596 h->neighbor.icmp.checksum =
Ed Warnickecb9cada2015-12-08 15:45:58 -07001597 ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
Dave Barachd7cb1b52016-12-09 09:52:16 -05001598 ASSERT (bogus_length == 0);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001599
1600 b = vlib_get_buffer (vm, bi);
Dave Barachd7cb1b52016-12-09 09:52:16 -05001601 vnet_buffer (b)->sw_if_index[VLIB_RX] =
1602 vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001603
1604 /* Add encapsulation string for software interface (e.g. ethernet header). */
Neale Ranns7a272742017-05-30 02:08:14 -07001605 ip46_address_t nh = {
1606 .ip6 = *dst,
1607 };
1608
1609 ai = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6,
1610 VNET_LINK_IP6, &nh, sw_if_index);
1611 adj = adj_get (ai);
1612
Dave Barach59b25652017-09-10 15:04:27 -04001613 /* Peer has been previously resolved, retrieve glean adj instead */
John Lo86376342018-06-11 20:14:49 -04001614 if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE && refresh == 0)
Dave Barach59b25652017-09-10 15:04:27 -04001615 {
1616 adj_unlock (ai);
Ole Troan6ee40512018-02-12 18:14:39 +01001617 ai = adj_glean_add_or_lock (FIB_PROTOCOL_IP6,
1618 VNET_LINK_IP6, sw_if_index, &nh);
Dave Barach59b25652017-09-10 15:04:27 -04001619 adj = adj_get (ai);
1620 }
1621
Ed Warnickecb9cada2015-12-08 15:45:58 -07001622 vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
1623 vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
1624
1625 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05001626 vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
1627 u32 *to_next = vlib_frame_vector_args (f);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001628 to_next[0] = bi;
1629 f->n_vectors = 1;
1630 vlib_put_frame_to_node (vm, hi->output_node_index, f);
1631 }
1632
Neale Ranns7a272742017-05-30 02:08:14 -07001633 adj_unlock (ai);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001634 return /* no error */ 0;
1635}
Damjan Marion38173502019-02-13 19:30:09 +01001636#endif
Ed Warnickecb9cada2015-12-08 15:45:58 -07001637
Dave Barachd7cb1b52016-12-09 09:52:16 -05001638typedef enum
1639{
Ed Warnickecb9cada2015-12-08 15:45:58 -07001640 IP6_REWRITE_NEXT_DROP,
Chris Luke816f3e12016-06-14 16:24:47 -04001641 IP6_REWRITE_NEXT_ICMP_ERROR,
Ole Troan313f7e22018-04-10 16:02:51 +02001642 IP6_REWRITE_NEXT_FRAGMENT,
1643 IP6_REWRITE_N_NEXT /* Last */
Ed Warnickecb9cada2015-12-08 15:45:58 -07001644} ip6_rewrite_next_t;
1645
Neale Ranns889fe942017-06-01 05:43:19 -04001646/**
1647 * This bits of an IPv6 address to mask to construct a multicast
1648 * MAC address
1649 */
1650#define IP6_MCAST_ADDR_MASK 0xffffffff
1651
Ole Troanda6e11b2018-05-23 11:21:42 +02001652always_inline void
1653ip6_mtu_check (vlib_buffer_t * b, u16 packet_bytes,
Ole Troan313f7e22018-04-10 16:02:51 +02001654 u16 adj_packet_bytes, bool is_locally_generated,
Ole Troaneb284a12019-10-09 13:33:19 +02001655 u32 * next, u8 is_midchain, u32 * error)
Ole Troanda6e11b2018-05-23 11:21:42 +02001656{
1657 if (adj_packet_bytes >= 1280 && packet_bytes > adj_packet_bytes)
1658 {
Ole Troan313f7e22018-04-10 16:02:51 +02001659 if (is_locally_generated)
1660 {
1661 /* IP fragmentation */
Ole Troan282093f2018-09-19 12:38:51 +02001662 ip_frag_set_vnet_buffer (b, adj_packet_bytes,
Ole Troaneb284a12019-10-09 13:33:19 +02001663 (is_midchain ?
1664 IP_FRAG_NEXT_IP_REWRITE_MIDCHAIN :
1665 IP_FRAG_NEXT_IP_REWRITE), 0);
Ole Troan313f7e22018-04-10 16:02:51 +02001666 *next = IP6_REWRITE_NEXT_FRAGMENT;
Ole Troan282093f2018-09-19 12:38:51 +02001667 *error = IP6_ERROR_MTU_EXCEEDED;
Ole Troan313f7e22018-04-10 16:02:51 +02001668 }
1669 else
1670 {
1671 *error = IP6_ERROR_MTU_EXCEEDED;
1672 icmp6_error_set_vnet_buffer (b, ICMP6_packet_too_big, 0,
1673 adj_packet_bytes);
1674 *next = IP6_REWRITE_NEXT_ICMP_ERROR;
1675 }
Ole Troanda6e11b2018-05-23 11:21:42 +02001676 }
1677}
1678
Ed Warnickecb9cada2015-12-08 15:45:58 -07001679always_inline uword
Andrew Yourtchenko6a7cff72018-10-12 16:09:22 +02001680ip6_rewrite_inline_with_gso (vlib_main_t * vm,
1681 vlib_node_runtime_t * node,
1682 vlib_frame_t * frame,
1683 int do_counters, int is_midchain, int is_mcast,
1684 int do_gso)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001685{
Dave Barachd7cb1b52016-12-09 09:52:16 -05001686 ip_lookup_main_t *lm = &ip6_main.lookup_main;
1687 u32 *from = vlib_frame_vector_args (frame);
1688 u32 n_left_from, n_left_to_next, *to_next, next_index;
1689 vlib_node_runtime_t *error_node =
1690 vlib_node_get_runtime (vm, ip6_input_node.index);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001691
1692 n_left_from = frame->n_vectors;
1693 next_index = node->cached_next_index;
Damjan Marion067cd622018-07-11 12:47:43 +02001694 u32 thread_index = vm->thread_index;
Dave Barach75fc8542016-10-11 16:16:02 -04001695
Ed Warnickecb9cada2015-12-08 15:45:58 -07001696 while (n_left_from > 0)
1697 {
1698 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1699
1700 while (n_left_from >= 4 && n_left_to_next >= 2)
1701 {
Neale Ranns960eeea2019-12-02 23:28:50 +00001702 const ip_adjacency_t *adj0, *adj1;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001703 vlib_buffer_t *p0, *p1;
1704 ip6_header_t *ip0, *ip1;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001705 u32 pi0, rw_len0, next0, error0, adj_index0;
1706 u32 pi1, rw_len1, next1, error1, adj_index1;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001707 u32 tx_sw_if_index0, tx_sw_if_index1;
Ole Troan313f7e22018-04-10 16:02:51 +02001708 bool is_locally_originated0, is_locally_originated1;
Dave Barach75fc8542016-10-11 16:16:02 -04001709
Ed Warnickecb9cada2015-12-08 15:45:58 -07001710 /* Prefetch next iteration. */
1711 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05001712 vlib_buffer_t *p2, *p3;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001713
1714 p2 = vlib_get_buffer (vm, from[2]);
1715 p3 = vlib_get_buffer (vm, from[3]);
1716
1717 vlib_prefetch_buffer_header (p2, LOAD);
1718 vlib_prefetch_buffer_header (p3, LOAD);
1719
1720 CLIB_PREFETCH (p2->pre_data, 32, STORE);
1721 CLIB_PREFETCH (p3->pre_data, 32, STORE);
1722
1723 CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE);
1724 CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE);
1725 }
1726
1727 pi0 = to_next[0] = from[0];
1728 pi1 = to_next[1] = from[1];
1729
1730 from += 2;
1731 n_left_from -= 2;
1732 to_next += 2;
1733 n_left_to_next -= 2;
Dave Barach75fc8542016-10-11 16:16:02 -04001734
Ed Warnickecb9cada2015-12-08 15:45:58 -07001735 p0 = vlib_get_buffer (vm, pi0);
1736 p1 = vlib_get_buffer (vm, pi1);
1737
Neale Rannsf06aea52016-11-29 06:51:37 -08001738 adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
1739 adj_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
Ed Warnickecb9cada2015-12-08 15:45:58 -07001740
Ed Warnickecb9cada2015-12-08 15:45:58 -07001741 ip0 = vlib_buffer_get_current (p0);
1742 ip1 = vlib_buffer_get_current (p1);
1743
1744 error0 = error1 = IP6_ERROR_NONE;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001745 next0 = next1 = IP6_REWRITE_NEXT_DROP;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001746
Ole Troan313f7e22018-04-10 16:02:51 +02001747 is_locally_originated0 =
1748 p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED;
1749 if (PREDICT_TRUE (!is_locally_originated0))
Ed Warnickecb9cada2015-12-08 15:45:58 -07001750 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05001751 i32 hop_limit0 = ip0->hop_limit;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001752
1753 /* Input node should have reject packets with hop limit 0. */
1754 ASSERT (ip0->hop_limit > 0);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001755
1756 hop_limit0 -= 1;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001757
1758 ip0->hop_limit = hop_limit0;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001759
Dave Barachd7cb1b52016-12-09 09:52:16 -05001760 /*
1761 * If the hop count drops below 1 when forwarding, generate
1762 * an ICMP response.
1763 */
1764 if (PREDICT_FALSE (hop_limit0 <= 0))
1765 {
1766 error0 = IP6_ERROR_TIME_EXPIRED;
1767 next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
1768 vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
1769 icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded,
1770 ICMP6_time_exceeded_ttl_exceeded_in_transit,
1771 0);
1772 }
Neale Rannsf06aea52016-11-29 06:51:37 -08001773 }
Dave Barachd7cb1b52016-12-09 09:52:16 -05001774 else
1775 {
Damjan Marion213b5aa2017-07-13 21:19:27 +02001776 p0->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001777 }
Ole Troan313f7e22018-04-10 16:02:51 +02001778 is_locally_originated1 =
1779 p1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED;
1780 if (PREDICT_TRUE (!is_locally_originated1))
Dave Barachd7cb1b52016-12-09 09:52:16 -05001781 {
Neale Rannsf06aea52016-11-29 06:51:37 -08001782 i32 hop_limit1 = ip1->hop_limit;
1783
1784 /* Input node should have reject packets with hop limit 0. */
1785 ASSERT (ip1->hop_limit > 0);
1786
1787 hop_limit1 -= 1;
1788
1789 ip1->hop_limit = hop_limit1;
1790
Dave Barachd7cb1b52016-12-09 09:52:16 -05001791 /*
1792 * If the hop count drops below 1 when forwarding, generate
1793 * an ICMP response.
1794 */
1795 if (PREDICT_FALSE (hop_limit1 <= 0))
1796 {
1797 error1 = IP6_ERROR_TIME_EXPIRED;
1798 next1 = IP6_REWRITE_NEXT_ICMP_ERROR;
1799 vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
1800 icmp6_error_set_vnet_buffer (p1, ICMP6_time_exceeded,
1801 ICMP6_time_exceeded_ttl_exceeded_in_transit,
1802 0);
1803 }
1804 }
1805 else
1806 {
Damjan Marion213b5aa2017-07-13 21:19:27 +02001807 p1->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001808 }
Neale Ranns107e7d42017-04-11 09:55:19 -07001809 adj0 = adj_get (adj_index0);
1810 adj1 = adj_get (adj_index1);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001811
Ed Warnickecb9cada2015-12-08 15:45:58 -07001812 rw_len0 = adj0[0].rewrite_header.data_bytes;
1813 rw_len1 = adj1[0].rewrite_header.data_bytes;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001814 vnet_buffer (p0)->ip.save_rewrite_length = rw_len0;
1815 vnet_buffer (p1)->ip.save_rewrite_length = rw_len1;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001816
Neale Ranns9c6a6132017-02-21 05:33:14 -08001817 if (do_counters)
1818 {
1819 vlib_increment_combined_counter
1820 (&adjacency_counters,
Damjan Marion586afd72017-04-05 19:18:20 +02001821 thread_index, adj_index0, 1,
Neale Ranns9c6a6132017-02-21 05:33:14 -08001822 vlib_buffer_length_in_chain (vm, p0) + rw_len0);
1823 vlib_increment_combined_counter
1824 (&adjacency_counters,
Damjan Marion586afd72017-04-05 19:18:20 +02001825 thread_index, adj_index1, 1,
Neale Ranns9c6a6132017-02-21 05:33:14 -08001826 vlib_buffer_length_in_chain (vm, p1) + rw_len1);
1827 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07001828
1829 /* Check MTU of outgoing interface. */
Andrew Yourtchenko6a7cff72018-10-12 16:09:22 +02001830 u16 ip0_len =
1831 clib_net_to_host_u16 (ip0->payload_length) +
1832 sizeof (ip6_header_t);
1833 u16 ip1_len =
1834 clib_net_to_host_u16 (ip1->payload_length) +
1835 sizeof (ip6_header_t);
1836 if (do_gso && (p0->flags & VNET_BUFFER_F_GSO))
1837 ip0_len = gso_mtu_sz (p0);
1838 if (do_gso && (p1->flags & VNET_BUFFER_F_GSO))
1839 ip1_len = gso_mtu_sz (p1);
1840
1841
1842
1843 ip6_mtu_check (p0, ip0_len,
Ole Troanda6e11b2018-05-23 11:21:42 +02001844 adj0[0].rewrite_header.max_l3_packet_bytes,
Ole Troaneb284a12019-10-09 13:33:19 +02001845 is_locally_originated0, &next0, is_midchain,
1846 &error0);
Andrew Yourtchenko6a7cff72018-10-12 16:09:22 +02001847 ip6_mtu_check (p1, ip1_len,
Ole Troanda6e11b2018-05-23 11:21:42 +02001848 adj1[0].rewrite_header.max_l3_packet_bytes,
Ole Troaneb284a12019-10-09 13:33:19 +02001849 is_locally_originated1, &next1, is_midchain,
1850 &error1);
Ed Warnickecb9cada2015-12-08 15:45:58 -07001851
Dave Barachd7cb1b52016-12-09 09:52:16 -05001852 /* Don't adjust the buffer for hop count issue; icmp-error node
Jim Thompsonf324dec2019-04-08 03:22:21 -05001853 * wants to see the IP header */
Dave Barachd7cb1b52016-12-09 09:52:16 -05001854 if (PREDICT_TRUE (error0 == IP6_ERROR_NONE))
1855 {
1856 p0->current_data -= rw_len0;
1857 p0->current_length += rw_len0;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001858
Dave Barachd7cb1b52016-12-09 09:52:16 -05001859 tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
1860 vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0;
1861 next0 = adj0[0].rewrite_header.next_index;
Dave Barach5331c722016-08-17 11:54:30 -04001862
Neale Rannsb069a692017-03-15 12:34:25 -04001863 if (PREDICT_FALSE
1864 (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES))
1865 vnet_feature_arc_start (lm->output_feature_arc_index,
1866 tx_sw_if_index0, &next0, p0);
Dave Barachd7cb1b52016-12-09 09:52:16 -05001867 }
Kingwel Xiecb36a1d2019-03-20 03:45:47 -04001868 else
1869 {
1870 p0->error = error_node->errors[error0];
1871 }
Dave Barachd7cb1b52016-12-09 09:52:16 -05001872 if (PREDICT_TRUE (error1 == IP6_ERROR_NONE))
1873 {
1874 p1->current_data -= rw_len1;
1875 p1->current_length += rw_len1;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001876
Dave Barachd7cb1b52016-12-09 09:52:16 -05001877 tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index;
1878 vnet_buffer (p1)->sw_if_index[VLIB_TX] = tx_sw_if_index1;
1879 next1 = adj1[0].rewrite_header.next_index;
Dave Barach5331c722016-08-17 11:54:30 -04001880
Neale Rannsb069a692017-03-15 12:34:25 -04001881 if (PREDICT_FALSE
1882 (adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES))
1883 vnet_feature_arc_start (lm->output_feature_arc_index,
1884 tx_sw_if_index1, &next1, p1);
Damjan Marionfe7d4a22018-04-13 19:43:39 +02001885 }
Kingwel Xiecb36a1d2019-03-20 03:45:47 -04001886 else
1887 {
1888 p1->error = error_node->errors[error1];
1889 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07001890
Neale Ranns25edf142019-03-22 08:12:48 +00001891 if (is_midchain)
1892 {
1893 /* before we paint on the next header, update the L4
1894 * checksums if required, since there's no offload on a tunnel */
1895 calc_checksums (vm, p0);
1896 calc_checksums (vm, p1);
1897 }
1898
Damjan Marionfe7d4a22018-04-13 19:43:39 +02001899 /* Guess we are only writing on simple Ethernet header. */
1900 vnet_rewrite_two_headers (adj0[0], adj1[0],
1901 ip0, ip1, sizeof (ethernet_header_t));
1902
1903 if (is_midchain)
1904 {
Neale Ranns25edf142019-03-22 08:12:48 +00001905 if (adj0->sub_type.midchain.fixup_func)
1906 adj0->sub_type.midchain.fixup_func
1907 (vm, adj0, p0, adj0->sub_type.midchain.fixup_data);
1908 if (adj1->sub_type.midchain.fixup_func)
1909 adj1->sub_type.midchain.fixup_func
1910 (vm, adj1, p1, adj1->sub_type.midchain.fixup_data);
Damjan Marionfe7d4a22018-04-13 19:43:39 +02001911 }
1912 if (is_mcast)
1913 {
1914 /*
1915 * copy bytes from the IP address into the MAC rewrite
1916 */
Neale Ranns889fe942017-06-01 05:43:19 -04001917 vnet_ip_mcast_fixup_header (IP6_MCAST_ADDR_MASK,
1918 adj0->
1919 rewrite_header.dst_mcast_offset,
1920 &ip0->dst_address.as_u32[3],
1921 (u8 *) ip0);
1922 vnet_ip_mcast_fixup_header (IP6_MCAST_ADDR_MASK,
1923 adj1->
1924 rewrite_header.dst_mcast_offset,
1925 &ip1->dst_address.as_u32[3],
1926 (u8 *) ip1);
Neale Ranns32e1c012016-11-22 17:07:28 +00001927 }
Neale Ranns5e575b12016-10-03 09:40:25 +01001928
Ed Warnickecb9cada2015-12-08 15:45:58 -07001929 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1930 to_next, n_left_to_next,
1931 pi0, pi1, next0, next1);
1932 }
1933
1934 while (n_left_from > 0 && n_left_to_next > 0)
1935 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05001936 ip_adjacency_t *adj0;
1937 vlib_buffer_t *p0;
1938 ip6_header_t *ip0;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001939 u32 pi0, rw_len0;
1940 u32 adj_index0, next0, error0;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001941 u32 tx_sw_if_index0;
Ole Troan313f7e22018-04-10 16:02:51 +02001942 bool is_locally_originated0;
Dave Barach75fc8542016-10-11 16:16:02 -04001943
Ed Warnickecb9cada2015-12-08 15:45:58 -07001944 pi0 = to_next[0] = from[0];
1945
1946 p0 = vlib_get_buffer (vm, pi0);
1947
Neale Rannsf06aea52016-11-29 06:51:37 -08001948 adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
Ed Warnickecb9cada2015-12-08 15:45:58 -07001949
Neale Ranns107e7d42017-04-11 09:55:19 -07001950 adj0 = adj_get (adj_index0);
Dave Barach75fc8542016-10-11 16:16:02 -04001951
Ed Warnickecb9cada2015-12-08 15:45:58 -07001952 ip0 = vlib_buffer_get_current (p0);
1953
1954 error0 = IP6_ERROR_NONE;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001955 next0 = IP6_REWRITE_NEXT_DROP;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001956
1957 /* Check hop limit */
Ole Troan313f7e22018-04-10 16:02:51 +02001958 is_locally_originated0 =
1959 p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED;
1960 if (PREDICT_TRUE (!is_locally_originated0))
Ed Warnickecb9cada2015-12-08 15:45:58 -07001961 {
1962 i32 hop_limit0 = ip0->hop_limit;
1963
1964 ASSERT (ip0->hop_limit > 0);
1965
1966 hop_limit0 -= 1;
1967
1968 ip0->hop_limit = hop_limit0;
1969
Dave Barachd7cb1b52016-12-09 09:52:16 -05001970 if (PREDICT_FALSE (hop_limit0 <= 0))
1971 {
1972 /*
1973 * If the hop count drops below 1 when forwarding, generate
1974 * an ICMP response.
1975 */
1976 error0 = IP6_ERROR_TIME_EXPIRED;
1977 next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
1978 vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
1979 icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded,
1980 ICMP6_time_exceeded_ttl_exceeded_in_transit,
1981 0);
1982 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07001983 }
Dave Barachd7cb1b52016-12-09 09:52:16 -05001984 else
1985 {
Damjan Marion213b5aa2017-07-13 21:19:27 +02001986 p0->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001987 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07001988
Neale Ranns25edf142019-03-22 08:12:48 +00001989 if (is_midchain)
1990 {
1991 calc_checksums (vm, p0);
1992 }
1993
Ed Warnickecb9cada2015-12-08 15:45:58 -07001994 /* Guess we are only writing on simple Ethernet header. */
1995 vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t));
Dave Barach75fc8542016-10-11 16:16:02 -04001996
Ed Warnickecb9cada2015-12-08 15:45:58 -07001997 /* Update packet buffer attributes/set output interface. */
1998 rw_len0 = adj0[0].rewrite_header.data_bytes;
Dave Barachd7cb1b52016-12-09 09:52:16 -05001999 vnet_buffer (p0)->ip.save_rewrite_length = rw_len0;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002000
Neale Ranns9c6a6132017-02-21 05:33:14 -08002001 if (do_counters)
2002 {
2003 vlib_increment_combined_counter
2004 (&adjacency_counters,
Damjan Marion586afd72017-04-05 19:18:20 +02002005 thread_index, adj_index0, 1,
Neale Ranns9c6a6132017-02-21 05:33:14 -08002006 vlib_buffer_length_in_chain (vm, p0) + rw_len0);
2007 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07002008
2009 /* Check MTU of outgoing interface. */
Andrew Yourtchenko6a7cff72018-10-12 16:09:22 +02002010 u16 ip0_len =
2011 clib_net_to_host_u16 (ip0->payload_length) +
2012 sizeof (ip6_header_t);
2013 if (do_gso && (p0->flags & VNET_BUFFER_F_GSO))
2014 ip0_len = gso_mtu_sz (p0);
2015
2016 ip6_mtu_check (p0, ip0_len,
Ole Troanda6e11b2018-05-23 11:21:42 +02002017 adj0[0].rewrite_header.max_l3_packet_bytes,
Ole Troaneb284a12019-10-09 13:33:19 +02002018 is_locally_originated0, &next0, is_midchain,
2019 &error0);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002020
Dave Barachd7cb1b52016-12-09 09:52:16 -05002021 /* Don't adjust the buffer for hop count issue; icmp-error node
Ole Troanda6e11b2018-05-23 11:21:42 +02002022 * wants to see the IP header */
Dave Barachd7cb1b52016-12-09 09:52:16 -05002023 if (PREDICT_TRUE (error0 == IP6_ERROR_NONE))
2024 {
Chris Luke816f3e12016-06-14 16:24:47 -04002025 p0->current_data -= rw_len0;
2026 p0->current_length += rw_len0;
2027
Dave Barachd7cb1b52016-12-09 09:52:16 -05002028 tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
Dave Barach5331c722016-08-17 11:54:30 -04002029
Dave Barachd7cb1b52016-12-09 09:52:16 -05002030 vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0;
2031 next0 = adj0[0].rewrite_header.next_index;
Dave Barach5331c722016-08-17 11:54:30 -04002032
Neale Rannsb069a692017-03-15 12:34:25 -04002033 if (PREDICT_FALSE
2034 (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES))
2035 vnet_feature_arc_start (lm->output_feature_arc_index,
2036 tx_sw_if_index0, &next0, p0);
Damjan Marionfe7d4a22018-04-13 19:43:39 +02002037 }
Kingwel Xiecb36a1d2019-03-20 03:45:47 -04002038 else
2039 {
2040 p0->error = error_node->errors[error0];
2041 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07002042
Damjan Marionfe7d4a22018-04-13 19:43:39 +02002043 if (is_midchain)
2044 {
Neale Ranns25edf142019-03-22 08:12:48 +00002045 if (adj0->sub_type.midchain.fixup_func)
2046 adj0->sub_type.midchain.fixup_func
2047 (vm, adj0, p0, adj0->sub_type.midchain.fixup_data);
Damjan Marionfe7d4a22018-04-13 19:43:39 +02002048 }
2049 if (is_mcast)
2050 {
Neale Ranns889fe942017-06-01 05:43:19 -04002051 vnet_ip_mcast_fixup_header (IP6_MCAST_ADDR_MASK,
2052 adj0->
2053 rewrite_header.dst_mcast_offset,
2054 &ip0->dst_address.as_u32[3],
2055 (u8 *) ip0);
Neale Ranns32e1c012016-11-22 17:07:28 +00002056 }
Neale Ranns5e575b12016-10-03 09:40:25 +01002057
Ed Warnickecb9cada2015-12-08 15:45:58 -07002058 from += 1;
2059 n_left_from -= 1;
2060 to_next += 1;
2061 n_left_to_next -= 1;
Dave Barach75fc8542016-10-11 16:16:02 -04002062
Ed Warnickecb9cada2015-12-08 15:45:58 -07002063 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2064 to_next, n_left_to_next,
2065 pi0, next0);
2066 }
2067
2068 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2069 }
2070
2071 /* Need to do trace after rewrites to pick up new packet data. */
2072 if (node->flags & VLIB_NODE_FLAG_TRACE)
Neale Rannsf06aea52016-11-29 06:51:37 -08002073 ip6_forward_next_trace (vm, node, frame, VLIB_TX);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002074
2075 return frame->n_vectors;
2076}
2077
Andrew Yourtchenko6a7cff72018-10-12 16:09:22 +02002078always_inline uword
2079ip6_rewrite_inline (vlib_main_t * vm,
2080 vlib_node_runtime_t * node,
2081 vlib_frame_t * frame,
2082 int do_counters, int is_midchain, int is_mcast)
2083{
2084 vnet_main_t *vnm = vnet_get_main ();
2085 if (PREDICT_FALSE (vnm->interface_main.gso_interface_count > 0))
2086 return ip6_rewrite_inline_with_gso (vm, node, frame, do_counters,
2087 is_midchain, is_mcast,
2088 1 /* do_gso */ );
2089 else
2090 return ip6_rewrite_inline_with_gso (vm, node, frame, do_counters,
2091 is_midchain, is_mcast,
2092 0 /* no do_gso */ );
2093}
2094
Damjan Marion38173502019-02-13 19:30:09 +01002095VLIB_NODE_FN (ip6_rewrite_node) (vlib_main_t * vm,
2096 vlib_node_runtime_t * node,
2097 vlib_frame_t * frame)
Ed Warnickecb9cada2015-12-08 15:45:58 -07002098{
Neale Ranns9c6a6132017-02-21 05:33:14 -08002099 if (adj_are_counters_enabled ())
2100 return ip6_rewrite_inline (vm, node, frame, 1, 0, 0);
2101 else
2102 return ip6_rewrite_inline (vm, node, frame, 0, 0, 0);
Neale Ranns32e1c012016-11-22 17:07:28 +00002103}
2104
Damjan Marion38173502019-02-13 19:30:09 +01002105VLIB_NODE_FN (ip6_rewrite_bcast_node) (vlib_main_t * vm,
2106 vlib_node_runtime_t * node,
2107 vlib_frame_t * frame)
Neale Ranns1855b8e2018-07-11 10:31:26 -07002108{
2109 if (adj_are_counters_enabled ())
2110 return ip6_rewrite_inline (vm, node, frame, 1, 0, 0);
2111 else
2112 return ip6_rewrite_inline (vm, node, frame, 0, 0, 0);
2113}
2114
Damjan Marion38173502019-02-13 19:30:09 +01002115VLIB_NODE_FN (ip6_rewrite_mcast_node) (vlib_main_t * vm,
2116 vlib_node_runtime_t * node,
2117 vlib_frame_t * frame)
Neale Ranns32e1c012016-11-22 17:07:28 +00002118{
Neale Ranns9c6a6132017-02-21 05:33:14 -08002119 if (adj_are_counters_enabled ())
2120 return ip6_rewrite_inline (vm, node, frame, 1, 0, 1);
2121 else
2122 return ip6_rewrite_inline (vm, node, frame, 0, 0, 1);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002123}
2124
Damjan Marion38173502019-02-13 19:30:09 +01002125VLIB_NODE_FN (ip6_midchain_node) (vlib_main_t * vm,
2126 vlib_node_runtime_t * node,
2127 vlib_frame_t * frame)
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002128{
Neale Ranns9c6a6132017-02-21 05:33:14 -08002129 if (adj_are_counters_enabled ())
2130 return ip6_rewrite_inline (vm, node, frame, 1, 1, 0);
2131 else
2132 return ip6_rewrite_inline (vm, node, frame, 0, 1, 0);
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002133}
2134
Damjan Marion38173502019-02-13 19:30:09 +01002135VLIB_NODE_FN (ip6_mcast_midchain_node) (vlib_main_t * vm,
2136 vlib_node_runtime_t * node,
2137 vlib_frame_t * frame)
Neale Ranns0f26c5a2017-03-01 15:12:11 -08002138{
2139 if (adj_are_counters_enabled ())
2140 return ip6_rewrite_inline (vm, node, frame, 1, 1, 1);
2141 else
Neale Ranns9f171f52017-04-11 08:56:53 -07002142 return ip6_rewrite_inline (vm, node, frame, 0, 1, 1);
Neale Ranns0f26c5a2017-03-01 15:12:11 -08002143}
2144
Dave Barachd7cb1b52016-12-09 09:52:16 -05002145/* *INDENT-OFF* */
2146VLIB_REGISTER_NODE (ip6_midchain_node) =
2147{
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002148 .name = "ip6-midchain",
2149 .vector_size = sizeof (u32),
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002150 .format_trace = format_ip6_forward_next_trace,
Neale Ranns5e575b12016-10-03 09:40:25 +01002151 .sibling_of = "ip6-rewrite",
Dave Barachd7cb1b52016-12-09 09:52:16 -05002152 };
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002153
Dave Barachd7cb1b52016-12-09 09:52:16 -05002154VLIB_REGISTER_NODE (ip6_rewrite_node) =
2155{
Ed Warnickecb9cada2015-12-08 15:45:58 -07002156 .name = "ip6-rewrite",
2157 .vector_size = sizeof (u32),
Pierre Pfistera38c3df2016-06-13 10:28:09 +01002158 .format_trace = format_ip6_rewrite_trace,
Ole Troan313f7e22018-04-10 16:02:51 +02002159 .n_next_nodes = IP6_REWRITE_N_NEXT,
Dave Barachd7cb1b52016-12-09 09:52:16 -05002160 .next_nodes =
2161 {
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -08002162 [IP6_REWRITE_NEXT_DROP] = "ip6-drop",
Chris Luke816f3e12016-06-14 16:24:47 -04002163 [IP6_REWRITE_NEXT_ICMP_ERROR] = "ip6-icmp-error",
Ole Troan313f7e22018-04-10 16:02:51 +02002164 [IP6_REWRITE_NEXT_FRAGMENT] = "ip6-frag",
Ed Warnickecb9cada2015-12-08 15:45:58 -07002165 },
2166};
2167
Neale Ranns1855b8e2018-07-11 10:31:26 -07002168VLIB_REGISTER_NODE (ip6_rewrite_bcast_node) = {
Neale Ranns1855b8e2018-07-11 10:31:26 -07002169 .name = "ip6-rewrite-bcast",
2170 .vector_size = sizeof (u32),
2171
2172 .format_trace = format_ip6_rewrite_trace,
2173 .sibling_of = "ip6-rewrite",
2174};
Neale Ranns1855b8e2018-07-11 10:31:26 -07002175
Neale Ranns32e1c012016-11-22 17:07:28 +00002176VLIB_REGISTER_NODE (ip6_rewrite_mcast_node) =
2177{
Neale Ranns32e1c012016-11-22 17:07:28 +00002178 .name = "ip6-rewrite-mcast",
2179 .vector_size = sizeof (u32),
2180 .format_trace = format_ip6_rewrite_trace,
2181 .sibling_of = "ip6-rewrite",
2182};
Neale Ranns32e1c012016-11-22 17:07:28 +00002183
Neale Ranns32e1c012016-11-22 17:07:28 +00002184
Damjan Marion38173502019-02-13 19:30:09 +01002185VLIB_REGISTER_NODE (ip6_mcast_midchain_node) =
Neale Ranns0f26c5a2017-03-01 15:12:11 -08002186{
Neale Ranns0f26c5a2017-03-01 15:12:11 -08002187 .name = "ip6-mcast-midchain",
2188 .vector_size = sizeof (u32),
2189 .format_trace = format_ip6_rewrite_trace,
2190 .sibling_of = "ip6-rewrite",
2191};
Neale Ranns0f26c5a2017-03-01 15:12:11 -08002192
Neale Ranns1855b8e2018-07-11 10:31:26 -07002193/* *INDENT-ON* */
Neale Ranns0f26c5a2017-03-01 15:12:11 -08002194
Ole Troan944f5482016-05-24 11:56:58 +02002195/*
2196 * Hop-by-Hop handling
2197 */
Benoît Ganne47727c02019-02-12 13:35:08 +01002198#ifndef CLIB_MARCH_VARIANT
Ole Troan944f5482016-05-24 11:56:58 +02002199ip6_hop_by_hop_main_t ip6_hop_by_hop_main;
Benoît Ganne47727c02019-02-12 13:35:08 +01002200#endif /* CLIB_MARCH_VARIANT */
Ole Troan944f5482016-05-24 11:56:58 +02002201
2202#define foreach_ip6_hop_by_hop_error \
2203_(PROCESSED, "pkts with ip6 hop-by-hop options") \
2204_(FORMAT, "incorrectly formatted hop-by-hop options") \
2205_(UNKNOWN_OPTION, "unknown ip6 hop-by-hop options")
2206
Neale Ranns32e1c012016-11-22 17:07:28 +00002207/* *INDENT-OFF* */
Dave Barachd7cb1b52016-12-09 09:52:16 -05002208typedef enum
2209{
Ole Troan944f5482016-05-24 11:56:58 +02002210#define _(sym,str) IP6_HOP_BY_HOP_ERROR_##sym,
2211 foreach_ip6_hop_by_hop_error
2212#undef _
Neale Ranns32e1c012016-11-22 17:07:28 +00002213 IP6_HOP_BY_HOP_N_ERROR,
Ole Troan944f5482016-05-24 11:56:58 +02002214} ip6_hop_by_hop_error_t;
Neale Ranns32e1c012016-11-22 17:07:28 +00002215/* *INDENT-ON* */
Ole Troan944f5482016-05-24 11:56:58 +02002216
2217/*
2218 * Primary h-b-h handler trace support
2219 * We work pretty hard on the problem for obvious reasons
2220 */
Dave Barachd7cb1b52016-12-09 09:52:16 -05002221typedef struct
2222{
Ole Troan944f5482016-05-24 11:56:58 +02002223 u32 next_index;
2224 u32 trace_len;
2225 u8 option_data[256];
2226} ip6_hop_by_hop_trace_t;
2227
Benoît Ganne47727c02019-02-12 13:35:08 +01002228extern vlib_node_registration_t ip6_hop_by_hop_node;
Ole Troan944f5482016-05-24 11:56:58 +02002229
Dave Barachd7cb1b52016-12-09 09:52:16 -05002230static char *ip6_hop_by_hop_error_strings[] = {
Ole Troan944f5482016-05-24 11:56:58 +02002231#define _(sym,string) string,
2232 foreach_ip6_hop_by_hop_error
2233#undef _
2234};
2235
Damjan Marion38173502019-02-13 19:30:09 +01002236#ifndef CLIB_MARCH_VARIANT
Shwetha Bhandari78372a92017-01-18 12:43:54 +05302237u8 *
2238format_ip6_hop_by_hop_ext_hdr (u8 * s, va_list * args)
2239{
2240 ip6_hop_by_hop_header_t *hbh0 = va_arg (*args, ip6_hop_by_hop_header_t *);
2241 int total_len = va_arg (*args, int);
2242 ip6_hop_by_hop_option_t *opt0, *limit0;
2243 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2244 u8 type0;
2245
2246 s = format (s, "IP6_HOP_BY_HOP: next protocol %d len %d total %d",
2247 hbh0->protocol, (hbh0->length + 1) << 3, total_len);
2248
2249 opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
2250 limit0 = (ip6_hop_by_hop_option_t *) ((u8 *) hbh0 + total_len);
2251
2252 while (opt0 < limit0)
2253 {
2254 type0 = opt0->type;
2255 switch (type0)
2256 {
2257 case 0: /* Pad, just stop */
2258 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0 + 1);
2259 break;
2260
2261 default:
2262 if (hm->trace[type0])
2263 {
2264 s = (*hm->trace[type0]) (s, opt0);
2265 }
2266 else
2267 {
2268 s =
2269 format (s, "\n unrecognized option %d length %d", type0,
2270 opt0->length);
2271 }
2272 opt0 =
2273 (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
2274 sizeof (ip6_hop_by_hop_option_t));
2275 break;
2276 }
2277 }
2278 return s;
2279}
Damjan Marion38173502019-02-13 19:30:09 +01002280#endif
Shwetha Bhandari78372a92017-01-18 12:43:54 +05302281
Ole Troan944f5482016-05-24 11:56:58 +02002282static u8 *
2283format_ip6_hop_by_hop_trace (u8 * s, va_list * args)
2284{
2285 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2286 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002287 ip6_hop_by_hop_trace_t *t = va_arg (*args, ip6_hop_by_hop_trace_t *);
Ole Troan944f5482016-05-24 11:56:58 +02002288 ip6_hop_by_hop_header_t *hbh0;
2289 ip6_hop_by_hop_option_t *opt0, *limit0;
2290 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2291
2292 u8 type0;
2293
Dave Barachd7cb1b52016-12-09 09:52:16 -05002294 hbh0 = (ip6_hop_by_hop_header_t *) t->option_data;
Ole Troan944f5482016-05-24 11:56:58 +02002295
2296 s = format (s, "IP6_HOP_BY_HOP: next index %d len %d traced %d",
Dave Barachd7cb1b52016-12-09 09:52:16 -05002297 t->next_index, (hbh0->length + 1) << 3, t->trace_len);
Ole Troan944f5482016-05-24 11:56:58 +02002298
Dave Barachd7cb1b52016-12-09 09:52:16 -05002299 opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
2300 limit0 = (ip6_hop_by_hop_option_t *) ((u8 *) hbh0) + t->trace_len;
Ole Troan944f5482016-05-24 11:56:58 +02002301
Dave Barachd7cb1b52016-12-09 09:52:16 -05002302 while (opt0 < limit0)
2303 {
2304 type0 = opt0->type;
2305 switch (type0)
2306 {
2307 case 0: /* Pad, just stop */
2308 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
2309 break;
Ole Troan944f5482016-05-24 11:56:58 +02002310
Dave Barachd7cb1b52016-12-09 09:52:16 -05002311 default:
2312 if (hm->trace[type0])
2313 {
2314 s = (*hm->trace[type0]) (s, opt0);
2315 }
2316 else
2317 {
2318 s =
2319 format (s, "\n unrecognized option %d length %d", type0,
2320 opt0->length);
2321 }
2322 opt0 =
2323 (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
2324 sizeof (ip6_hop_by_hop_option_t));
2325 break;
2326 }
Ole Troan944f5482016-05-24 11:56:58 +02002327 }
Ole Troan944f5482016-05-24 11:56:58 +02002328 return s;
2329}
2330
Dave Barachd7cb1b52016-12-09 09:52:16 -05002331always_inline u8
2332ip6_scan_hbh_options (vlib_buffer_t * b0,
2333 ip6_header_t * ip0,
2334 ip6_hop_by_hop_header_t * hbh0,
2335 ip6_hop_by_hop_option_t * opt0,
2336 ip6_hop_by_hop_option_t * limit0, u32 * next0)
Shwethaa91cbe62016-08-08 15:51:04 +01002337{
2338 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2339 u8 type0;
2340 u8 error0 = 0;
2341
2342 while (opt0 < limit0)
2343 {
2344 type0 = opt0->type;
2345 switch (type0)
2346 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05002347 case 0: /* Pad1 */
2348 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
Shwethaa91cbe62016-08-08 15:51:04 +01002349 continue;
Dave Barachd7cb1b52016-12-09 09:52:16 -05002350 case 1: /* PadN */
Shwethaa91cbe62016-08-08 15:51:04 +01002351 break;
2352 default:
2353 if (hm->options[type0])
2354 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05002355 if ((*hm->options[type0]) (b0, ip0, opt0) < 0)
2356 {
Shwethaa91cbe62016-08-08 15:51:04 +01002357 error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
Dave Barachd7cb1b52016-12-09 09:52:16 -05002358 return (error0);
2359 }
Shwethaa91cbe62016-08-08 15:51:04 +01002360 }
2361 else
2362 {
2363 /* Unrecognized mandatory option, check the two high order bits */
2364 switch (opt0->type & HBH_OPTION_TYPE_HIGH_ORDER_BITS)
2365 {
2366 case HBH_OPTION_TYPE_SKIP_UNKNOWN:
2367 break;
2368 case HBH_OPTION_TYPE_DISCARD_UNKNOWN:
2369 error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
2370 *next0 = IP_LOOKUP_NEXT_DROP;
2371 break;
2372 case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP:
2373 error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
2374 *next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -05002375 icmp6_error_set_vnet_buffer (b0, ICMP6_parameter_problem,
2376 ICMP6_parameter_problem_unrecognized_option,
2377 (u8 *) opt0 - (u8 *) ip0);
Shwethaa91cbe62016-08-08 15:51:04 +01002378 break;
2379 case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP_NOT_MCAST:
2380 error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
Dave Barachd7cb1b52016-12-09 09:52:16 -05002381 if (!ip6_address_is_multicast (&ip0->dst_address))
Shwethaa91cbe62016-08-08 15:51:04 +01002382 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05002383 *next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
2384 icmp6_error_set_vnet_buffer (b0,
2385 ICMP6_parameter_problem,
2386 ICMP6_parameter_problem_unrecognized_option,
2387 (u8 *) opt0 - (u8 *) ip0);
Shwethaa91cbe62016-08-08 15:51:04 +01002388 }
2389 else
2390 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05002391 *next0 = IP_LOOKUP_NEXT_DROP;
Shwethaa91cbe62016-08-08 15:51:04 +01002392 }
2393 break;
2394 }
Dave Barachd7cb1b52016-12-09 09:52:16 -05002395 return (error0);
Shwethaa91cbe62016-08-08 15:51:04 +01002396 }
2397 }
Dave Barachd7cb1b52016-12-09 09:52:16 -05002398 opt0 =
2399 (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
2400 sizeof (ip6_hop_by_hop_option_t));
Shwethaa91cbe62016-08-08 15:51:04 +01002401 }
Dave Barachd7cb1b52016-12-09 09:52:16 -05002402 return (error0);
Shwethaa91cbe62016-08-08 15:51:04 +01002403}
2404
Ole Troan944f5482016-05-24 11:56:58 +02002405/*
2406 * Process the Hop-by-Hop Options header
2407 */
Damjan Marion38173502019-02-13 19:30:09 +01002408VLIB_NODE_FN (ip6_hop_by_hop_node) (vlib_main_t * vm,
2409 vlib_node_runtime_t * node,
2410 vlib_frame_t * frame)
Ole Troan944f5482016-05-24 11:56:58 +02002411{
Dave Barachd7cb1b52016-12-09 09:52:16 -05002412 vlib_node_runtime_t *error_node =
2413 vlib_node_get_runtime (vm, ip6_hop_by_hop_node.index);
Ole Troan944f5482016-05-24 11:56:58 +02002414 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
2415 u32 n_left_from, *from, *to_next;
2416 ip_lookup_next_t next_index;
Ole Troan944f5482016-05-24 11:56:58 +02002417
2418 from = vlib_frame_vector_args (frame);
2419 n_left_from = frame->n_vectors;
2420 next_index = node->cached_next_index;
2421
Dave Barachd7cb1b52016-12-09 09:52:16 -05002422 while (n_left_from > 0)
2423 {
2424 u32 n_left_to_next;
Ole Troan944f5482016-05-24 11:56:58 +02002425
Dave Barachd7cb1b52016-12-09 09:52:16 -05002426 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
Ole Troan944f5482016-05-24 11:56:58 +02002427
Dave Barachd7cb1b52016-12-09 09:52:16 -05002428 while (n_left_from >= 4 && n_left_to_next >= 2)
Shwethaa91cbe62016-08-08 15:51:04 +01002429 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05002430 u32 bi0, bi1;
2431 vlib_buffer_t *b0, *b1;
2432 u32 next0, next1;
2433 ip6_header_t *ip0, *ip1;
2434 ip6_hop_by_hop_header_t *hbh0, *hbh1;
2435 ip6_hop_by_hop_option_t *opt0, *limit0, *opt1, *limit1;
2436 u8 error0 = 0, error1 = 0;
2437
2438 /* Prefetch next iteration. */
2439 {
2440 vlib_buffer_t *p2, *p3;
2441
2442 p2 = vlib_get_buffer (vm, from[2]);
2443 p3 = vlib_get_buffer (vm, from[3]);
2444
2445 vlib_prefetch_buffer_header (p2, LOAD);
2446 vlib_prefetch_buffer_header (p3, LOAD);
2447
2448 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
2449 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
Shwethaa91cbe62016-08-08 15:51:04 +01002450 }
2451
Dave Barachd7cb1b52016-12-09 09:52:16 -05002452 /* Speculatively enqueue b0, b1 to the current next frame */
2453 to_next[0] = bi0 = from[0];
2454 to_next[1] = bi1 = from[1];
2455 from += 2;
2456 to_next += 2;
2457 n_left_from -= 2;
2458 n_left_to_next -= 2;
2459
2460 b0 = vlib_get_buffer (vm, bi0);
2461 b1 = vlib_get_buffer (vm, bi1);
2462
2463 /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
2464 u32 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
Neale Ranns107e7d42017-04-11 09:55:19 -07002465 ip_adjacency_t *adj0 = adj_get (adj_index0);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002466 u32 adj_index1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX];
Neale Ranns107e7d42017-04-11 09:55:19 -07002467 ip_adjacency_t *adj1 = adj_get (adj_index1);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002468
2469 /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
2470 next0 = adj0->lookup_next_index;
2471 next1 = adj1->lookup_next_index;
2472
2473 ip0 = vlib_buffer_get_current (b0);
2474 ip1 = vlib_buffer_get_current (b1);
2475 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
2476 hbh1 = (ip6_hop_by_hop_header_t *) (ip1 + 1);
2477 opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
2478 opt1 = (ip6_hop_by_hop_option_t *) (hbh1 + 1);
2479 limit0 =
2480 (ip6_hop_by_hop_option_t *) ((u8 *) hbh0 +
2481 ((hbh0->length + 1) << 3));
2482 limit1 =
2483 (ip6_hop_by_hop_option_t *) ((u8 *) hbh1 +
2484 ((hbh1->length + 1) << 3));
2485
2486 /*
2487 * Basic validity checks
2488 */
2489 if ((hbh0->length + 1) << 3 >
2490 clib_net_to_host_u16 (ip0->payload_length))
2491 {
2492 error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
2493 next0 = IP_LOOKUP_NEXT_DROP;
2494 goto outdual;
2495 }
2496 /* Scan the set of h-b-h options, process ones that we understand */
2497 error0 = ip6_scan_hbh_options (b0, ip0, hbh0, opt0, limit0, &next0);
2498
2499 if ((hbh1->length + 1) << 3 >
2500 clib_net_to_host_u16 (ip1->payload_length))
2501 {
2502 error1 = IP6_HOP_BY_HOP_ERROR_FORMAT;
2503 next1 = IP_LOOKUP_NEXT_DROP;
2504 goto outdual;
2505 }
2506 /* Scan the set of h-b-h options, process ones that we understand */
2507 error1 = ip6_scan_hbh_options (b1, ip1, hbh1, opt1, limit1, &next1);
2508
2509 outdual:
2510 /* Has the classifier flagged this buffer for special treatment? */
2511 if (PREDICT_FALSE
2512 ((error0 == 0)
2513 && (vnet_buffer (b0)->l2_classify.opaque_index & OI_DECAP)))
2514 next0 = hm->next_override;
2515
2516 /* Has the classifier flagged this buffer for special treatment? */
2517 if (PREDICT_FALSE
2518 ((error1 == 0)
2519 && (vnet_buffer (b1)->l2_classify.opaque_index & OI_DECAP)))
2520 next1 = hm->next_override;
2521
2522 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
2523 {
2524 if (b0->flags & VLIB_BUFFER_IS_TRACED)
2525 {
2526 ip6_hop_by_hop_trace_t *t =
2527 vlib_add_trace (vm, node, b0, sizeof (*t));
2528 u32 trace_len = (hbh0->length + 1) << 3;
2529 t->next_index = next0;
2530 /* Capture the h-b-h option verbatim */
2531 trace_len =
2532 trace_len <
2533 ARRAY_LEN (t->option_data) ? trace_len :
2534 ARRAY_LEN (t->option_data);
2535 t->trace_len = trace_len;
Dave Barach178cf492018-11-13 16:34:13 -05002536 clib_memcpy_fast (t->option_data, hbh0, trace_len);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002537 }
2538 if (b1->flags & VLIB_BUFFER_IS_TRACED)
2539 {
2540 ip6_hop_by_hop_trace_t *t =
2541 vlib_add_trace (vm, node, b1, sizeof (*t));
2542 u32 trace_len = (hbh1->length + 1) << 3;
2543 t->next_index = next1;
2544 /* Capture the h-b-h option verbatim */
2545 trace_len =
2546 trace_len <
2547 ARRAY_LEN (t->option_data) ? trace_len :
2548 ARRAY_LEN (t->option_data);
2549 t->trace_len = trace_len;
Dave Barach178cf492018-11-13 16:34:13 -05002550 clib_memcpy_fast (t->option_data, hbh1, trace_len);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002551 }
2552
2553 }
2554
2555 b0->error = error_node->errors[error0];
2556 b1->error = error_node->errors[error1];
2557
2558 /* verify speculative enqueue, maybe switch current next frame */
2559 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
2560 n_left_to_next, bi0, bi1, next0,
2561 next1);
Shwethaa91cbe62016-08-08 15:51:04 +01002562 }
2563
Dave Barachd7cb1b52016-12-09 09:52:16 -05002564 while (n_left_from > 0 && n_left_to_next > 0)
2565 {
2566 u32 bi0;
2567 vlib_buffer_t *b0;
2568 u32 next0;
2569 ip6_header_t *ip0;
2570 ip6_hop_by_hop_header_t *hbh0;
2571 ip6_hop_by_hop_option_t *opt0, *limit0;
2572 u8 error0 = 0;
Shwethaa91cbe62016-08-08 15:51:04 +01002573
Dave Barachd7cb1b52016-12-09 09:52:16 -05002574 /* Speculatively enqueue b0 to the current next frame */
2575 bi0 = from[0];
2576 to_next[0] = bi0;
2577 from += 1;
2578 to_next += 1;
2579 n_left_from -= 1;
2580 n_left_to_next -= 1;
2581
2582 b0 = vlib_get_buffer (vm, bi0);
2583 /*
2584 * Default use the next_index from the adjacency.
2585 * A HBH option rarely redirects to a different node
2586 */
2587 u32 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
Neale Ranns107e7d42017-04-11 09:55:19 -07002588 ip_adjacency_t *adj0 = adj_get (adj_index0);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002589 next0 = adj0->lookup_next_index;
2590
2591 ip0 = vlib_buffer_get_current (b0);
2592 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
2593 opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
2594 limit0 =
2595 (ip6_hop_by_hop_option_t *) ((u8 *) hbh0 +
2596 ((hbh0->length + 1) << 3));
2597
2598 /*
2599 * Basic validity checks
2600 */
2601 if ((hbh0->length + 1) << 3 >
2602 clib_net_to_host_u16 (ip0->payload_length))
2603 {
2604 error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
2605 next0 = IP_LOOKUP_NEXT_DROP;
2606 goto out0;
2607 }
2608
2609 /* Scan the set of h-b-h options, process ones that we understand */
2610 error0 = ip6_scan_hbh_options (b0, ip0, hbh0, opt0, limit0, &next0);
2611
2612 out0:
2613 /* Has the classifier flagged this buffer for special treatment? */
2614 if (PREDICT_FALSE
2615 ((error0 == 0)
2616 && (vnet_buffer (b0)->l2_classify.opaque_index & OI_DECAP)))
2617 next0 = hm->next_override;
2618
2619 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2620 {
2621 ip6_hop_by_hop_trace_t *t =
2622 vlib_add_trace (vm, node, b0, sizeof (*t));
2623 u32 trace_len = (hbh0->length + 1) << 3;
2624 t->next_index = next0;
2625 /* Capture the h-b-h option verbatim */
2626 trace_len =
2627 trace_len <
2628 ARRAY_LEN (t->option_data) ? trace_len :
2629 ARRAY_LEN (t->option_data);
2630 t->trace_len = trace_len;
Dave Barach178cf492018-11-13 16:34:13 -05002631 clib_memcpy_fast (t->option_data, hbh0, trace_len);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002632 }
2633
2634 b0->error = error_node->errors[error0];
2635
2636 /* verify speculative enqueue, maybe switch current next frame */
2637 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
2638 n_left_to_next, bi0, next0);
2639 }
2640 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
Shwethaa91cbe62016-08-08 15:51:04 +01002641 }
Ole Troan944f5482016-05-24 11:56:58 +02002642 return frame->n_vectors;
2643}
2644
Dave Barachd7cb1b52016-12-09 09:52:16 -05002645/* *INDENT-OFF* */
2646VLIB_REGISTER_NODE (ip6_hop_by_hop_node) =
2647{
Ole Troan944f5482016-05-24 11:56:58 +02002648 .name = "ip6-hop-by-hop",
Ole Troan964f93e2016-06-10 13:22:36 +02002649 .sibling_of = "ip6-lookup",
Ole Troan944f5482016-05-24 11:56:58 +02002650 .vector_size = sizeof (u32),
2651 .format_trace = format_ip6_hop_by_hop_trace,
2652 .type = VLIB_NODE_TYPE_INTERNAL,
Dave Barachd7cb1b52016-12-09 09:52:16 -05002653 .n_errors = ARRAY_LEN (ip6_hop_by_hop_error_strings),
Ole Troan944f5482016-05-24 11:56:58 +02002654 .error_strings = ip6_hop_by_hop_error_strings,
Ole Troan964f93e2016-06-10 13:22:36 +02002655 .n_next_nodes = 0,
Ole Troan944f5482016-05-24 11:56:58 +02002656};
Dave Barachd7cb1b52016-12-09 09:52:16 -05002657/* *INDENT-ON* */
Ole Troan944f5482016-05-24 11:56:58 +02002658
Ole Troan944f5482016-05-24 11:56:58 +02002659static clib_error_t *
2660ip6_hop_by_hop_init (vlib_main_t * vm)
2661{
Dave Barachd7cb1b52016-12-09 09:52:16 -05002662 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
Dave Barachb7b92992018-10-17 10:38:51 -04002663 clib_memset (hm->options, 0, sizeof (hm->options));
2664 clib_memset (hm->trace, 0, sizeof (hm->trace));
Shwethaa91cbe62016-08-08 15:51:04 +01002665 hm->next_override = IP6_LOOKUP_NEXT_POP_HOP_BY_HOP;
Ole Troan944f5482016-05-24 11:56:58 +02002666 return (0);
2667}
2668
2669VLIB_INIT_FUNCTION (ip6_hop_by_hop_init);
2670
Damjan Marion38173502019-02-13 19:30:09 +01002671#ifndef CLIB_MARCH_VARIANT
Dave Barachd7cb1b52016-12-09 09:52:16 -05002672void
2673ip6_hbh_set_next_override (uword next)
Shwethaa91cbe62016-08-08 15:51:04 +01002674{
Dave Barachd7cb1b52016-12-09 09:52:16 -05002675 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
Shwethaa91cbe62016-08-08 15:51:04 +01002676
2677 hm->next_override = next;
2678}
2679
Ole Troan944f5482016-05-24 11:56:58 +02002680int
2681ip6_hbh_register_option (u8 option,
Dave Barachd7cb1b52016-12-09 09:52:16 -05002682 int options (vlib_buffer_t * b, ip6_header_t * ip,
2683 ip6_hop_by_hop_option_t * opt),
2684 u8 * trace (u8 * s, ip6_hop_by_hop_option_t * opt))
Ole Troan944f5482016-05-24 11:56:58 +02002685{
Dave Barachd7cb1b52016-12-09 09:52:16 -05002686 ip6_main_t *im = &ip6_main;
2687 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
Ole Troan944f5482016-05-24 11:56:58 +02002688
Neale Ranns756cd942018-04-06 09:18:11 -07002689 ASSERT ((u32) option < ARRAY_LEN (hm->options));
Ole Troan944f5482016-05-24 11:56:58 +02002690
2691 /* Already registered */
2692 if (hm->options[option])
2693 return (-1);
2694
2695 hm->options[option] = options;
2696 hm->trace[option] = trace;
2697
2698 /* Set global variable */
2699 im->hbh_enabled = 1;
2700
2701 return (0);
2702}
2703
2704int
2705ip6_hbh_unregister_option (u8 option)
2706{
Dave Barachd7cb1b52016-12-09 09:52:16 -05002707 ip6_main_t *im = &ip6_main;
2708 ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
Ole Troan944f5482016-05-24 11:56:58 +02002709
Neale Ranns756cd942018-04-06 09:18:11 -07002710 ASSERT ((u32) option < ARRAY_LEN (hm->options));
Ole Troan944f5482016-05-24 11:56:58 +02002711
2712 /* Not registered */
2713 if (!hm->options[option])
2714 return (-1);
2715
2716 hm->options[option] = NULL;
2717 hm->trace[option] = NULL;
2718
2719 /* Disable global knob if this was the last option configured */
2720 int i;
2721 bool found = false;
Dave Barachd7cb1b52016-12-09 09:52:16 -05002722 for (i = 0; i < 256; i++)
2723 {
2724 if (hm->options[option])
2725 {
2726 found = true;
2727 break;
2728 }
Ole Troan944f5482016-05-24 11:56:58 +02002729 }
Ole Troan944f5482016-05-24 11:56:58 +02002730 if (!found)
2731 im->hbh_enabled = 0;
2732
2733 return (0);
2734}
2735
Ed Warnickecb9cada2015-12-08 15:45:58 -07002736/* Global IP6 main. */
2737ip6_main_t ip6_main;
Damjan Marion38173502019-02-13 19:30:09 +01002738#endif
Ed Warnickecb9cada2015-12-08 15:45:58 -07002739
2740static clib_error_t *
2741ip6_lookup_init (vlib_main_t * vm)
2742{
Dave Barachd7cb1b52016-12-09 09:52:16 -05002743 ip6_main_t *im = &ip6_main;
2744 clib_error_t *error;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002745 uword i;
2746
Damjan Marion8b3191e2016-11-09 19:54:20 +01002747 if ((error = vlib_call_init_function (vm, vnet_feature_init)))
2748 return error;
2749
Ed Warnickecb9cada2015-12-08 15:45:58 -07002750 for (i = 0; i < ARRAY_LEN (im->fib_masks); i++)
2751 {
2752 u32 j, i0, i1;
2753
2754 i0 = i / 32;
2755 i1 = i % 32;
2756
2757 for (j = 0; j < i0; j++)
2758 im->fib_masks[i].as_u32[j] = ~0;
2759
2760 if (i1)
Dave Barachd7cb1b52016-12-09 09:52:16 -05002761 im->fib_masks[i].as_u32[i0] =
2762 clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
Ed Warnickecb9cada2015-12-08 15:45:58 -07002763 }
2764
2765 ip_lookup_init (&im->lookup_main, /* is_ip6 */ 1);
2766
2767 if (im->lookup_table_nbuckets == 0)
2768 im->lookup_table_nbuckets = IP6_FIB_DEFAULT_HASH_NUM_BUCKETS;
2769
Dave Barachd7cb1b52016-12-09 09:52:16 -05002770 im->lookup_table_nbuckets = 1 << max_log2 (im->lookup_table_nbuckets);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002771
2772 if (im->lookup_table_size == 0)
2773 im->lookup_table_size = IP6_FIB_DEFAULT_HASH_MEMORY_SIZE;
Dave Barach75fc8542016-10-11 16:16:02 -04002774
Neale Rannsae809832018-11-23 09:00:27 -08002775 clib_bihash_init_24_8 (&(im->ip6_table[IP6_FIB_TABLE_FWDING].ip6_hash),
Dave Barachd7cb1b52016-12-09 09:52:16 -05002776 "ip6 FIB fwding table",
2777 im->lookup_table_nbuckets, im->lookup_table_size);
Neale Rannsae809832018-11-23 09:00:27 -08002778 clib_bihash_init_24_8 (&im->ip6_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash,
Dave Barachd7cb1b52016-12-09 09:52:16 -05002779 "ip6 FIB non-fwding table",
2780 im->lookup_table_nbuckets, im->lookup_table_size);
Neale Rannsae809832018-11-23 09:00:27 -08002781 clib_bihash_init_40_8 (&im->ip6_mtable.ip6_mhash,
2782 "ip6 mFIB table",
2783 im->lookup_table_nbuckets, im->lookup_table_size);
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002784
Ed Warnickecb9cada2015-12-08 15:45:58 -07002785 /* Create FIB with index 0 and table id of 0. */
Neale Ranns15002542017-09-10 04:39:11 -07002786 fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, 0,
2787 FIB_SOURCE_DEFAULT_ROUTE);
2788 mfib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, 0,
2789 MFIB_SOURCE_DEFAULT_ROUTE);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002790
2791 {
Dave Barachd7cb1b52016-12-09 09:52:16 -05002792 pg_node_t *pn;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002793 pn = pg_get_node (ip6_lookup_node.index);
2794 pn->unformat_edit = unformat_pg_ip6_header;
2795 }
2796
Ole Troan944f5482016-05-24 11:56:58 +02002797 /* Unless explicitly configured, don't process HBH options */
2798 im->hbh_enabled = 0;
2799
Ed Warnickecb9cada2015-12-08 15:45:58 -07002800 {
2801 icmp6_neighbor_solicitation_header_t p;
2802
Dave Barachb7b92992018-10-17 10:38:51 -04002803 clib_memset (&p, 0, sizeof (p));
Ed Warnickecb9cada2015-12-08 15:45:58 -07002804
Dave Barachd7cb1b52016-12-09 09:52:16 -05002805 p.ip.ip_version_traffic_class_and_flow_label =
2806 clib_host_to_net_u32 (0x6 << 28);
2807 p.ip.payload_length =
2808 clib_host_to_net_u16 (sizeof (p) -
2809 STRUCT_OFFSET_OF
2810 (icmp6_neighbor_solicitation_header_t, neighbor));
Ed Warnickecb9cada2015-12-08 15:45:58 -07002811 p.ip.protocol = IP_PROTOCOL_ICMP6;
2812 p.ip.hop_limit = 255;
2813 ip6_set_solicited_node_multicast_address (&p.ip.dst_address, 0);
2814
2815 p.neighbor.icmp.type = ICMP6_neighbor_solicitation;
2816
Dave Barachd7cb1b52016-12-09 09:52:16 -05002817 p.link_layer_option.header.type =
2818 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
2819 p.link_layer_option.header.n_data_u64s =
2820 sizeof (p.link_layer_option) / sizeof (u64);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002821
2822 vlib_packet_template_init (vm,
2823 &im->discover_neighbor_packet_template,
2824 &p, sizeof (p),
2825 /* alloc chunk size */ 8,
2826 "ip6 neighbor discovery");
2827 }
2828
Dave Barach203c6322016-06-26 10:29:03 -04002829 return error;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002830}
2831
2832VLIB_INIT_FUNCTION (ip6_lookup_init);
2833
Dave Barach75fc8542016-10-11 16:16:02 -04002834static clib_error_t *
Ed Warnickecb9cada2015-12-08 15:45:58 -07002835test_ip6_link_command_fn (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -05002836 unformat_input_t * input, vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -07002837{
2838 u8 mac[6];
2839 ip6_address_t _a, *a = &_a;
2840
2841 if (unformat (input, "%U", unformat_ethernet_address, mac))
2842 {
2843 ip6_link_local_address_from_ethernet_mac_address (a, mac);
Dave Barachd7cb1b52016-12-09 09:52:16 -05002844 vlib_cli_output (vm, "Link local address: %U", format_ip6_address, a);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002845 ip6_ethernet_mac_address_from_link_local_address (mac, a);
2846 vlib_cli_output (vm, "Original MAC address: %U",
Dave Barachd7cb1b52016-12-09 09:52:16 -05002847 format_ethernet_address, mac);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002848 }
Dave Barach75fc8542016-10-11 16:16:02 -04002849
Ed Warnickecb9cada2015-12-08 15:45:58 -07002850 return 0;
2851}
2852
Billy McFall0683c9c2016-10-13 08:27:31 -04002853/*?
2854 * This command converts the given MAC Address into an IPv6 link-local
2855 * address.
2856 *
2857 * @cliexpar
2858 * Example of how to create an IPv6 link-local address:
2859 * @cliexstart{test ip6 link 16:d9:e0:91:79:86}
2860 * Link local address: fe80::14d9:e0ff:fe91:7986
2861 * Original MAC address: 16:d9:e0:91:79:86
2862 * @cliexend
2863?*/
2864/* *INDENT-OFF* */
Dave Barachd7cb1b52016-12-09 09:52:16 -05002865VLIB_CLI_COMMAND (test_link_command, static) =
2866{
Ed Warnickecb9cada2015-12-08 15:45:58 -07002867 .path = "test ip6 link",
Dave Barach75fc8542016-10-11 16:16:02 -04002868 .function = test_ip6_link_command_fn,
Ed Warnickecb9cada2015-12-08 15:45:58 -07002869 .short_help = "test ip6 link <mac-address>",
2870};
Billy McFall0683c9c2016-10-13 08:27:31 -04002871/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -07002872
Damjan Marion38173502019-02-13 19:30:09 +01002873#ifndef CLIB_MARCH_VARIANT
Dave Barachd7cb1b52016-12-09 09:52:16 -05002874int
2875vnet_set_ip6_flow_hash (u32 table_id, u32 flow_hash_config)
Ed Warnickecb9cada2015-12-08 15:45:58 -07002876{
Neale Ranns107e7d42017-04-11 09:55:19 -07002877 u32 fib_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002878
Neale Ranns107e7d42017-04-11 09:55:19 -07002879 fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002880
Neale Ranns107e7d42017-04-11 09:55:19 -07002881 if (~0 == fib_index)
2882 return VNET_API_ERROR_NO_SUCH_FIB;
2883
Neale Ranns227038a2017-04-21 01:07:59 -07002884 fib_table_set_flow_hash_config (fib_index, FIB_PROTOCOL_IP6,
2885 flow_hash_config);
Ed Warnickecb9cada2015-12-08 15:45:58 -07002886
Neale Ranns227038a2017-04-21 01:07:59 -07002887 return 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002888}
Damjan Marion38173502019-02-13 19:30:09 +01002889#endif
Ed Warnickecb9cada2015-12-08 15:45:58 -07002890
2891static clib_error_t *
2892set_ip6_flow_hash_command_fn (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -05002893 unformat_input_t * input,
2894 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -07002895{
2896 int matched = 0;
2897 u32 table_id = 0;
2898 u32 flow_hash_config = 0;
2899 int rv;
2900
Dave Barachd7cb1b52016-12-09 09:52:16 -05002901 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
2902 {
2903 if (unformat (input, "table %d", &table_id))
2904 matched = 1;
Ed Warnickecb9cada2015-12-08 15:45:58 -07002905#define _(a,v) \
2906 else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;}
Dave Barachd7cb1b52016-12-09 09:52:16 -05002907 foreach_flow_hash_bit
Ed Warnickecb9cada2015-12-08 15:45:58 -07002908#undef _
Dave Barachd7cb1b52016-12-09 09:52:16 -05002909 else
2910 break;
2911 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07002912
2913 if (matched == 0)
2914 return clib_error_return (0, "unknown input `%U'",
Dave Barachd7cb1b52016-12-09 09:52:16 -05002915 format_unformat_error, input);
Dave Barach75fc8542016-10-11 16:16:02 -04002916
Ed Warnickecb9cada2015-12-08 15:45:58 -07002917 rv = vnet_set_ip6_flow_hash (table_id, flow_hash_config);
2918 switch (rv)
2919 {
Neale Ranns227038a2017-04-21 01:07:59 -07002920 case 0:
Ed Warnickecb9cada2015-12-08 15:45:58 -07002921 break;
2922
2923 case -1:
2924 return clib_error_return (0, "no such FIB table %d", table_id);
Dave Barach75fc8542016-10-11 16:16:02 -04002925
Ed Warnickecb9cada2015-12-08 15:45:58 -07002926 default:
2927 clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config);
2928 break;
2929 }
Dave Barach75fc8542016-10-11 16:16:02 -04002930
Ed Warnickecb9cada2015-12-08 15:45:58 -07002931 return 0;
2932}
2933
Billy McFall0683c9c2016-10-13 08:27:31 -04002934/*?
2935 * Configure the set of IPv6 fields used by the flow hash.
2936 *
2937 * @cliexpar
2938 * @parblock
2939 * Example of how to set the flow hash on a given table:
Billy McFallebb9a6a2016-10-17 11:35:32 -04002940 * @cliexcmd{set ip6 flow-hash table 8 dst sport dport proto}
2941 *
Billy McFall0683c9c2016-10-13 08:27:31 -04002942 * Example of display the configured flow hash:
2943 * @cliexstart{show ip6 fib}
Billy McFallebb9a6a2016-10-17 11:35:32 -04002944 * ipv6-VRF:0, fib_index 0, flow hash: src dst sport dport proto
2945 * @::/0
2946 * unicast-ip6-chain
2947 * [@0]: dpo-load-balance: [index:5 buckets:1 uRPF:5 to:[0:0]]
2948 * [0] [@0]: dpo-drop ip6
2949 * fe80::/10
2950 * unicast-ip6-chain
2951 * [@0]: dpo-load-balance: [index:10 buckets:1 uRPF:10 to:[0:0]]
2952 * [0] [@2]: dpo-receive
2953 * ff02::1/128
2954 * unicast-ip6-chain
2955 * [@0]: dpo-load-balance: [index:8 buckets:1 uRPF:8 to:[0:0]]
2956 * [0] [@2]: dpo-receive
2957 * ff02::2/128
2958 * unicast-ip6-chain
2959 * [@0]: dpo-load-balance: [index:7 buckets:1 uRPF:7 to:[0:0]]
2960 * [0] [@2]: dpo-receive
2961 * ff02::16/128
2962 * unicast-ip6-chain
2963 * [@0]: dpo-load-balance: [index:9 buckets:1 uRPF:9 to:[0:0]]
2964 * [0] [@2]: dpo-receive
2965 * ff02::1:ff00:0/104
2966 * unicast-ip6-chain
2967 * [@0]: dpo-load-balance: [index:6 buckets:1 uRPF:6 to:[0:0]]
2968 * [0] [@2]: dpo-receive
2969 * ipv6-VRF:8, fib_index 1, flow hash: dst sport dport proto
2970 * @::/0
2971 * unicast-ip6-chain
2972 * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]]
2973 * [0] [@0]: dpo-drop ip6
2974 * @::a:1:1:0:4/126
2975 * unicast-ip6-chain
2976 * [@0]: dpo-load-balance: [index:27 buckets:1 uRPF:26 to:[0:0]]
2977 * [0] [@4]: ipv6-glean: af_packet0
2978 * @::a:1:1:0:7/128
2979 * unicast-ip6-chain
2980 * [@0]: dpo-load-balance: [index:28 buckets:1 uRPF:27 to:[0:0]]
2981 * [0] [@2]: dpo-receive: @::a:1:1:0:7 on af_packet0
2982 * fe80::/10
2983 * unicast-ip6-chain
2984 * [@0]: dpo-load-balance: [index:26 buckets:1 uRPF:25 to:[0:0]]
2985 * [0] [@2]: dpo-receive
2986 * fe80::fe:3eff:fe3e:9222/128
2987 * unicast-ip6-chain
2988 * [@0]: dpo-load-balance: [index:29 buckets:1 uRPF:28 to:[0:0]]
2989 * [0] [@2]: dpo-receive: fe80::fe:3eff:fe3e:9222 on af_packet0
2990 * ff02::1/128
2991 * unicast-ip6-chain
2992 * [@0]: dpo-load-balance: [index:24 buckets:1 uRPF:23 to:[0:0]]
2993 * [0] [@2]: dpo-receive
2994 * ff02::2/128
2995 * unicast-ip6-chain
2996 * [@0]: dpo-load-balance: [index:23 buckets:1 uRPF:22 to:[0:0]]
2997 * [0] [@2]: dpo-receive
2998 * ff02::16/128
2999 * unicast-ip6-chain
3000 * [@0]: dpo-load-balance: [index:25 buckets:1 uRPF:24 to:[0:0]]
3001 * [0] [@2]: dpo-receive
3002 * ff02::1:ff00:0/104
3003 * unicast-ip6-chain
3004 * [@0]: dpo-load-balance: [index:22 buckets:1 uRPF:21 to:[0:0]]
3005 * [0] [@2]: dpo-receive
Billy McFall0683c9c2016-10-13 08:27:31 -04003006 * @cliexend
3007 * @endparblock
3008?*/
3009/* *INDENT-OFF* */
Dave Barachd7cb1b52016-12-09 09:52:16 -05003010VLIB_CLI_COMMAND (set_ip6_flow_hash_command, static) =
3011{
3012 .path = "set ip6 flow-hash",
3013 .short_help =
3014 "set ip6 flow-hash table <table-id> [src] [dst] [sport] [dport] [proto] [reverse]",
3015 .function = set_ip6_flow_hash_command_fn,
Ed Warnickecb9cada2015-12-08 15:45:58 -07003016};
Billy McFall0683c9c2016-10-13 08:27:31 -04003017/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -07003018
3019static clib_error_t *
3020show_ip6_local_command_fn (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -05003021 unformat_input_t * input, vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -07003022{
Dave Barachd7cb1b52016-12-09 09:52:16 -05003023 ip6_main_t *im = &ip6_main;
3024 ip_lookup_main_t *lm = &im->lookup_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -07003025 int i;
Dave Barach75fc8542016-10-11 16:16:02 -04003026
Ed Warnickecb9cada2015-12-08 15:45:58 -07003027 vlib_cli_output (vm, "Protocols handled by ip6_local");
Dave Barachd7cb1b52016-12-09 09:52:16 -05003028 for (i = 0; i < ARRAY_LEN (lm->local_next_by_ip_protocol); i++)
Ed Warnickecb9cada2015-12-08 15:45:58 -07003029 {
3030 if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT)
Pierre Pfister1bfd3722017-09-18 11:40:32 +02003031 {
3032
3033 u32 node_index = vlib_get_node (vm,
3034 ip6_local_node.index)->
3035 next_nodes[lm->local_next_by_ip_protocol[i]];
3036 vlib_cli_output (vm, "%d: %U", i, format_vlib_node_name, vm,
3037 node_index);
3038 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07003039 }
3040 return 0;
3041}
3042
3043
3044
Billy McFall0683c9c2016-10-13 08:27:31 -04003045/*?
3046 * Display the set of protocols handled by the local IPv6 stack.
3047 *
3048 * @cliexpar
3049 * Example of how to display local protocol table:
3050 * @cliexstart{show ip6 local}
3051 * Protocols handled by ip6_local
3052 * 17
3053 * 43
3054 * 58
3055 * 115
3056 * @cliexend
3057?*/
3058/* *INDENT-OFF* */
Dave Barachd7cb1b52016-12-09 09:52:16 -05003059VLIB_CLI_COMMAND (show_ip6_local, static) =
3060{
Ed Warnickecb9cada2015-12-08 15:45:58 -07003061 .path = "show ip6 local",
3062 .function = show_ip6_local_command_fn,
Billy McFall0683c9c2016-10-13 08:27:31 -04003063 .short_help = "show ip6 local",
Ed Warnickecb9cada2015-12-08 15:45:58 -07003064};
Billy McFall0683c9c2016-10-13 08:27:31 -04003065/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -07003066
Damjan Marion38173502019-02-13 19:30:09 +01003067#ifndef CLIB_MARCH_VARIANT
Dave Barachd7cb1b52016-12-09 09:52:16 -05003068int
3069vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
3070 u32 table_index)
Ed Warnickecb9cada2015-12-08 15:45:58 -07003071{
Dave Barachd7cb1b52016-12-09 09:52:16 -05003072 vnet_main_t *vnm = vnet_get_main ();
3073 vnet_interface_main_t *im = &vnm->interface_main;
3074 ip6_main_t *ipm = &ip6_main;
3075 ip_lookup_main_t *lm = &ipm->lookup_main;
3076 vnet_classify_main_t *cm = &vnet_classify_main;
Neale Rannsdf089a82016-10-02 16:39:06 +01003077 ip6_address_t *if_addr;
Ed Warnickecb9cada2015-12-08 15:45:58 -07003078
3079 if (pool_is_free_index (im->sw_interfaces, sw_if_index))
3080 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
3081
3082 if (table_index != ~0 && pool_is_free_index (cm->tables, table_index))
3083 return VNET_API_ERROR_NO_SUCH_ENTRY;
3084
3085 vec_validate (lm->classify_table_index_by_sw_if_index, sw_if_index);
Dave Barachd7cb1b52016-12-09 09:52:16 -05003086 lm->classify_table_index_by_sw_if_index[sw_if_index] = table_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -07003087
Neale Ranns6cfc39c2017-02-14 01:44:25 -08003088 if_addr = ip6_interface_first_address (ipm, sw_if_index);
Neale Rannsdf089a82016-10-02 16:39:06 +01003089
3090 if (NULL != if_addr)
Dave Barachd7cb1b52016-12-09 09:52:16 -05003091 {
Neale Rannsdf089a82016-10-02 16:39:06 +01003092 fib_prefix_t pfx = {
Dave Barachd7cb1b52016-12-09 09:52:16 -05003093 .fp_len = 128,
3094 .fp_proto = FIB_PROTOCOL_IP6,
3095 .fp_addr.ip6 = *if_addr,
Neale Rannsdf089a82016-10-02 16:39:06 +01003096 };
3097 u32 fib_index;
3098
Dave Barachd7cb1b52016-12-09 09:52:16 -05003099 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
3100 sw_if_index);
Neale Rannsdf089a82016-10-02 16:39:06 +01003101
3102
Dave Barachd7cb1b52016-12-09 09:52:16 -05003103 if (table_index != (u32) ~ 0)
3104 {
3105 dpo_id_t dpo = DPO_INVALID;
Neale Rannsdf089a82016-10-02 16:39:06 +01003106
Dave Barachd7cb1b52016-12-09 09:52:16 -05003107 dpo_set (&dpo,
3108 DPO_CLASSIFY,
3109 DPO_PROTO_IP6,
3110 classify_dpo_create (DPO_PROTO_IP6, table_index));
Neale Rannsdf089a82016-10-02 16:39:06 +01003111
Dave Barachd7cb1b52016-12-09 09:52:16 -05003112 fib_table_entry_special_dpo_add (fib_index,
3113 &pfx,
3114 FIB_SOURCE_CLASSIFY,
3115 FIB_ENTRY_FLAG_NONE, &dpo);
3116 dpo_reset (&dpo);
3117 }
Neale Rannsdf089a82016-10-02 16:39:06 +01003118 else
Dave Barachd7cb1b52016-12-09 09:52:16 -05003119 {
3120 fib_table_entry_special_remove (fib_index,
3121 &pfx, FIB_SOURCE_CLASSIFY);
3122 }
3123 }
Neale Rannsdf089a82016-10-02 16:39:06 +01003124
Ed Warnickecb9cada2015-12-08 15:45:58 -07003125 return 0;
3126}
Damjan Marion38173502019-02-13 19:30:09 +01003127#endif
Ed Warnickecb9cada2015-12-08 15:45:58 -07003128
3129static clib_error_t *
3130set_ip6_classify_command_fn (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -05003131 unformat_input_t * input,
3132 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -07003133{
3134 u32 table_index = ~0;
3135 int table_index_set = 0;
3136 u32 sw_if_index = ~0;
3137 int rv;
Dave Barach75fc8542016-10-11 16:16:02 -04003138
Dave Barachd7cb1b52016-12-09 09:52:16 -05003139 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
3140 {
3141 if (unformat (input, "table-index %d", &table_index))
3142 table_index_set = 1;
3143 else if (unformat (input, "intfc %U", unformat_vnet_sw_interface,
3144 vnet_get_main (), &sw_if_index))
3145 ;
3146 else
3147 break;
3148 }
Dave Barach75fc8542016-10-11 16:16:02 -04003149
Ed Warnickecb9cada2015-12-08 15:45:58 -07003150 if (table_index_set == 0)
Dave Barachd7cb1b52016-12-09 09:52:16 -05003151 return clib_error_return (0, "classify table-index must be specified");
Dave Barach75fc8542016-10-11 16:16:02 -04003152
Ed Warnickecb9cada2015-12-08 15:45:58 -07003153 if (sw_if_index == ~0)
3154 return clib_error_return (0, "interface / subif must be specified");
3155
3156 rv = vnet_set_ip6_classify_intfc (vm, sw_if_index, table_index);
3157
3158 switch (rv)
3159 {
3160 case 0:
3161 break;
3162
3163 case VNET_API_ERROR_NO_MATCHING_INTERFACE:
3164 return clib_error_return (0, "No such interface");
3165
3166 case VNET_API_ERROR_NO_SUCH_ENTRY:
3167 return clib_error_return (0, "No such classifier table");
3168 }
3169 return 0;
3170}
3171
Billy McFall0683c9c2016-10-13 08:27:31 -04003172/*?
3173 * Assign a classification table to an interface. The classification
3174 * table is created using the '<em>classify table</em>' and '<em>classify session</em>'
3175 * commands. Once the table is create, use this command to filter packets
3176 * on an interface.
3177 *
3178 * @cliexpar
3179 * Example of how to assign a classification table to an interface:
3180 * @cliexcmd{set ip6 classify intfc GigabitEthernet2/0/0 table-index 1}
3181?*/
3182/* *INDENT-OFF* */
Dave Barachd7cb1b52016-12-09 09:52:16 -05003183VLIB_CLI_COMMAND (set_ip6_classify_command, static) =
3184{
3185 .path = "set ip6 classify",
3186 .short_help =
3187 "set ip6 classify intfc <interface> table-index <classify-idx>",
3188 .function = set_ip6_classify_command_fn,
Ed Warnickecb9cada2015-12-08 15:45:58 -07003189};
Billy McFall0683c9c2016-10-13 08:27:31 -04003190/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -07003191
3192static clib_error_t *
3193ip6_config (vlib_main_t * vm, unformat_input_t * input)
3194{
Dave Barachd7cb1b52016-12-09 09:52:16 -05003195 ip6_main_t *im = &ip6_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -07003196 uword heapsize = 0;
3197 u32 tmp;
3198 u32 nbuckets = 0;
3199
Dave Barachd7cb1b52016-12-09 09:52:16 -05003200 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
3201 {
3202 if (unformat (input, "hash-buckets %d", &tmp))
3203 nbuckets = tmp;
Neale Ranns1ec36522017-11-29 05:20:37 -08003204 else if (unformat (input, "heap-size %U",
3205 unformat_memory_size, &heapsize))
3206 ;
Dave Barachd7cb1b52016-12-09 09:52:16 -05003207 else
3208 return clib_error_return (0, "unknown input '%U'",
3209 format_unformat_error, input);
3210 }
Ed Warnickecb9cada2015-12-08 15:45:58 -07003211
3212 im->lookup_table_nbuckets = nbuckets;
3213 im->lookup_table_size = heapsize;
3214
3215 return 0;
3216}
3217
3218VLIB_EARLY_CONFIG_FUNCTION (ip6_config, "ip6");
Dave Barachd7cb1b52016-12-09 09:52:16 -05003219
3220/*
3221 * fd.io coding-style-patch-verification: ON
3222 *
3223 * Local Variables:
3224 * eval: (c-set-style "gnu")
3225 * End:
3226 */