Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1 | /* |
| 2 | * sr_policy_rewrite.c: ipv6 sr policy creation |
| 3 | * |
| 4 | * Copyright (c) 2016 Cisco and/or its affiliates. |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | /** |
| 19 | * @file |
| 20 | * @brief SR policy creation and application |
| 21 | * |
| 22 | * Create an SR policy. |
| 23 | * An SR policy can be either of 'default' type or 'spray' type |
| 24 | * An SR policy has attached a list of SID lists. |
| 25 | * In case the SR policy is a default one it will load balance among them. |
| 26 | * An SR policy has associated a BindingSID. |
| 27 | * In case any packet arrives with IPv6 DA == BindingSID then the SR policy |
| 28 | * associated to such bindingSID will be applied to such packet. |
| 29 | * |
| 30 | * SR policies can be applied either by using IPv6 encapsulation or |
| 31 | * SRH insertion. Both methods can be found on this file. |
| 32 | * |
| 33 | * Traffic input usually is IPv6 packets. However it is possible to have |
| 34 | * IPv4 packets or L2 frames. (that are encapsulated into IPv6 with SRH) |
| 35 | * |
| 36 | * This file provides the appropiates VPP graph nodes to do any of these |
| 37 | * methods. |
| 38 | * |
| 39 | */ |
| 40 | |
| 41 | #include <vlib/vlib.h> |
| 42 | #include <vnet/vnet.h> |
Pablo Camarillo | 5d73eec | 2017-04-24 17:51:56 +0200 | [diff] [blame] | 43 | #include <vnet/srv6/sr.h> |
Neale Ranns | e403113 | 2020-10-26 13:00:06 +0000 | [diff] [blame] | 44 | #include <vnet/ip/ip4_inlines.h> |
| 45 | #include <vnet/ip/ip6_inlines.h> |
Pablo Camarillo | 5d73eec | 2017-04-24 17:51:56 +0200 | [diff] [blame] | 46 | #include <vnet/srv6/sr_packet.h> |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 47 | #include <vnet/fib/ip6_fib.h> |
| 48 | #include <vnet/dpo/dpo.h> |
| 49 | #include <vnet/dpo/replicate_dpo.h> |
| 50 | |
| 51 | #include <vppinfra/error.h> |
| 52 | #include <vppinfra/elog.h> |
| 53 | |
| 54 | /** |
| 55 | * @brief SR policy rewrite trace |
| 56 | */ |
| 57 | typedef struct |
| 58 | { |
| 59 | ip6_address_t src, dst; |
| 60 | } sr_policy_rewrite_trace_t; |
| 61 | |
| 62 | /* Graph arcs */ |
| 63 | #define foreach_sr_policy_rewrite_next \ |
| 64 | _(IP6_LOOKUP, "ip6-lookup") \ |
| 65 | _(ERROR, "error-drop") |
| 66 | |
| 67 | typedef enum |
| 68 | { |
| 69 | #define _(s,n) SR_POLICY_REWRITE_NEXT_##s, |
| 70 | foreach_sr_policy_rewrite_next |
| 71 | #undef _ |
| 72 | SR_POLICY_REWRITE_N_NEXT, |
| 73 | } sr_policy_rewrite_next_t; |
| 74 | |
| 75 | /* SR rewrite errors */ |
| 76 | #define foreach_sr_policy_rewrite_error \ |
| 77 | _(INTERNAL_ERROR, "Segment Routing undefined error") \ |
| 78 | _(BSID_ZERO, "BSID with SL = 0") \ |
| 79 | _(COUNTER_TOTAL, "SR steered IPv6 packets") \ |
| 80 | _(COUNTER_ENCAP, "SR: Encaps packets") \ |
| 81 | _(COUNTER_INSERT, "SR: SRH inserted packets") \ |
| 82 | _(COUNTER_BSID, "SR: BindingSID steered packets") |
| 83 | |
| 84 | typedef enum |
| 85 | { |
| 86 | #define _(sym,str) SR_POLICY_REWRITE_ERROR_##sym, |
| 87 | foreach_sr_policy_rewrite_error |
| 88 | #undef _ |
| 89 | SR_POLICY_REWRITE_N_ERROR, |
| 90 | } sr_policy_rewrite_error_t; |
| 91 | |
| 92 | static char *sr_policy_rewrite_error_strings[] = { |
| 93 | #define _(sym,string) string, |
| 94 | foreach_sr_policy_rewrite_error |
| 95 | #undef _ |
| 96 | }; |
| 97 | |
| 98 | /** |
| 99 | * @brief Dynamically added SR SL DPO type |
| 100 | */ |
| 101 | static dpo_type_t sr_pr_encaps_dpo_type; |
| 102 | static dpo_type_t sr_pr_insert_dpo_type; |
| 103 | static dpo_type_t sr_pr_bsid_encaps_dpo_type; |
| 104 | static dpo_type_t sr_pr_bsid_insert_dpo_type; |
| 105 | |
| 106 | /** |
| 107 | * @brief IPv6 SA for encapsulated packets |
| 108 | */ |
| 109 | static ip6_address_t sr_pr_encaps_src; |
Ignas Bačius | eeb5fb3 | 2019-10-03 17:15:38 +0300 | [diff] [blame] | 110 | static u8 sr_pr_encaps_hop_limit = IPv6_DEFAULT_HOP_LIMIT; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 111 | |
| 112 | /******************* SR rewrite set encaps IPv6 source addr *******************/ |
| 113 | /* Note: This is temporal. We don't know whether to follow this path or |
| 114 | take the ip address of a loopback interface or even the OIF */ |
| 115 | |
Pablo Camarillo | 1a5e301 | 2017-11-16 16:02:50 +0100 | [diff] [blame] | 116 | void |
| 117 | sr_set_source (ip6_address_t * address) |
| 118 | { |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 119 | clib_memcpy_fast (&sr_pr_encaps_src, address, sizeof (sr_pr_encaps_src)); |
Pablo Camarillo | 1a5e301 | 2017-11-16 16:02:50 +0100 | [diff] [blame] | 120 | } |
| 121 | |
Ahmed Abdelsalam | 448bc81 | 2020-11-09 14:04:07 +0000 | [diff] [blame] | 122 | ip6_address_t * |
| 123 | sr_get_encaps_source () |
| 124 | { |
| 125 | return &sr_pr_encaps_src; |
| 126 | } |
| 127 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 128 | static clib_error_t * |
| 129 | set_sr_src_command_fn (vlib_main_t * vm, unformat_input_t * input, |
| 130 | vlib_cli_command_t * cmd) |
| 131 | { |
| 132 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 133 | { |
| 134 | if (unformat |
| 135 | (input, "addr %U", unformat_ip6_address, &sr_pr_encaps_src)) |
| 136 | return 0; |
| 137 | else |
| 138 | return clib_error_return (0, "No address specified"); |
| 139 | } |
| 140 | return clib_error_return (0, "No address specified"); |
| 141 | } |
| 142 | |
| 143 | /* *INDENT-OFF* */ |
| 144 | VLIB_CLI_COMMAND (set_sr_src_command, static) = { |
| 145 | .path = "set sr encaps source", |
| 146 | .short_help = "set sr encaps source addr <ip6_addr>", |
| 147 | .function = set_sr_src_command_fn, |
| 148 | }; |
| 149 | /* *INDENT-ON* */ |
| 150 | |
Ignas Bačius | eeb5fb3 | 2019-10-03 17:15:38 +0300 | [diff] [blame] | 151 | /******************** SR rewrite set encaps IPv6 hop-limit ********************/ |
| 152 | |
| 153 | void |
| 154 | sr_set_hop_limit (u8 hop_limit) |
| 155 | { |
| 156 | sr_pr_encaps_hop_limit = hop_limit; |
| 157 | } |
| 158 | |
| 159 | u8 |
| 160 | sr_get_hop_limit (void) |
| 161 | { |
| 162 | return sr_pr_encaps_hop_limit; |
| 163 | } |
| 164 | |
| 165 | static clib_error_t * |
| 166 | set_sr_hop_limit_command_fn (vlib_main_t * vm, unformat_input_t * input, |
| 167 | vlib_cli_command_t * cmd) |
| 168 | { |
| 169 | int hop_limit = sr_get_hop_limit (); |
| 170 | |
| 171 | if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT) |
| 172 | return clib_error_return (0, "No value specified"); |
| 173 | if (!unformat (input, "%d", &hop_limit)) |
| 174 | return clib_error_return (0, "Invalid value"); |
| 175 | if (hop_limit <= 0 || hop_limit > 255) |
| 176 | return clib_error_return (0, "Value out of range [1-255]"); |
| 177 | sr_pr_encaps_hop_limit = (u8) hop_limit; |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | /* *INDENT-OFF* */ |
| 182 | VLIB_CLI_COMMAND (set_sr_hop_limit_command, static) = { |
| 183 | .path = "set sr encaps hop-limit", |
| 184 | .short_help = "set sr encaps hop-limit <value>", |
| 185 | .function = set_sr_hop_limit_command_fn, |
| 186 | }; |
| 187 | /* *INDENT-ON* */ |
| 188 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 189 | /*********************** SR rewrite string computation ************************/ |
| 190 | /** |
| 191 | * @brief SR rewrite string computation for IPv6 encapsulation (inline) |
| 192 | * |
| 193 | * @param sl is a vector of IPv6 addresses composing the Segment List |
| 194 | * |
| 195 | * @return precomputed rewrite string for encapsulation |
| 196 | */ |
| 197 | static inline u8 * |
| 198 | compute_rewrite_encaps (ip6_address_t * sl) |
| 199 | { |
| 200 | ip6_header_t *iph; |
| 201 | ip6_sr_header_t *srh; |
| 202 | ip6_address_t *addrp, *this_address; |
| 203 | u32 header_length = 0; |
| 204 | u8 *rs = NULL; |
| 205 | |
| 206 | header_length = 0; |
| 207 | header_length += IPv6_DEFAULT_HEADER_LENGTH; |
| 208 | if (vec_len (sl) > 1) |
| 209 | { |
| 210 | header_length += sizeof (ip6_sr_header_t); |
| 211 | header_length += vec_len (sl) * sizeof (ip6_address_t); |
| 212 | } |
| 213 | |
| 214 | vec_validate (rs, header_length - 1); |
| 215 | |
| 216 | iph = (ip6_header_t *) rs; |
| 217 | iph->ip_version_traffic_class_and_flow_label = |
| 218 | clib_host_to_net_u32 (0 | ((6 & 0xF) << 28)); |
| 219 | iph->src_address.as_u64[0] = sr_pr_encaps_src.as_u64[0]; |
| 220 | iph->src_address.as_u64[1] = sr_pr_encaps_src.as_u64[1]; |
| 221 | iph->payload_length = header_length - IPv6_DEFAULT_HEADER_LENGTH; |
| 222 | iph->protocol = IP_PROTOCOL_IPV6; |
Ignas Bačius | eeb5fb3 | 2019-10-03 17:15:38 +0300 | [diff] [blame] | 223 | iph->hop_limit = sr_pr_encaps_hop_limit; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 224 | |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 225 | if (vec_len (sl) > 1) |
| 226 | { |
| 227 | srh = (ip6_sr_header_t *) (iph + 1); |
| 228 | iph->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 229 | srh->protocol = IP_PROTOCOL_IPV6; |
| 230 | srh->type = ROUTING_HEADER_TYPE_SR; |
| 231 | srh->segments_left = vec_len (sl) - 1; |
Ahmed Abdelsalam | be83704 | 2019-06-20 11:18:57 +0000 | [diff] [blame] | 232 | srh->last_entry = vec_len (sl) - 1; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 233 | srh->length = ((sizeof (ip6_sr_header_t) + |
| 234 | (vec_len (sl) * sizeof (ip6_address_t))) / 8) - 1; |
| 235 | srh->flags = 0x00; |
Ahmed Abdelsalam | be83704 | 2019-06-20 11:18:57 +0000 | [diff] [blame] | 236 | srh->tag = 0x0000; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 237 | addrp = srh->segments + vec_len (sl) - 1; |
| 238 | vec_foreach (this_address, sl) |
| 239 | { |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 240 | clib_memcpy_fast (addrp->as_u8, this_address->as_u8, |
| 241 | sizeof (ip6_address_t)); |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 242 | addrp--; |
| 243 | } |
| 244 | } |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 245 | iph->dst_address.as_u64[0] = sl->as_u64[0]; |
| 246 | iph->dst_address.as_u64[1] = sl->as_u64[1]; |
| 247 | return rs; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * @brief SR rewrite string computation for SRH insertion (inline) |
| 252 | * |
| 253 | * @param sl is a vector of IPv6 addresses composing the Segment List |
| 254 | * |
| 255 | * @return precomputed rewrite string for SRH insertion |
| 256 | */ |
| 257 | static inline u8 * |
| 258 | compute_rewrite_insert (ip6_address_t * sl) |
| 259 | { |
| 260 | ip6_sr_header_t *srh; |
| 261 | ip6_address_t *addrp, *this_address; |
| 262 | u32 header_length = 0; |
| 263 | u8 *rs = NULL; |
| 264 | |
| 265 | header_length = 0; |
| 266 | header_length += sizeof (ip6_sr_header_t); |
| 267 | header_length += (vec_len (sl) + 1) * sizeof (ip6_address_t); |
| 268 | |
| 269 | vec_validate (rs, header_length - 1); |
| 270 | |
| 271 | srh = (ip6_sr_header_t *) rs; |
| 272 | srh->type = ROUTING_HEADER_TYPE_SR; |
| 273 | srh->segments_left = vec_len (sl); |
Ahmed Abdelsalam | be83704 | 2019-06-20 11:18:57 +0000 | [diff] [blame] | 274 | srh->last_entry = vec_len (sl); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 275 | srh->length = ((sizeof (ip6_sr_header_t) + |
| 276 | ((vec_len (sl) + 1) * sizeof (ip6_address_t))) / 8) - 1; |
| 277 | srh->flags = 0x00; |
Ahmed Abdelsalam | be83704 | 2019-06-20 11:18:57 +0000 | [diff] [blame] | 278 | srh->tag = 0x0000; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 279 | addrp = srh->segments + vec_len (sl); |
| 280 | vec_foreach (this_address, sl) |
| 281 | { |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 282 | clib_memcpy_fast (addrp->as_u8, this_address->as_u8, |
| 283 | sizeof (ip6_address_t)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 284 | addrp--; |
| 285 | } |
| 286 | return rs; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * @brief SR rewrite string computation for SRH insertion with BSID (inline) |
| 291 | * |
| 292 | * @param sl is a vector of IPv6 addresses composing the Segment List |
| 293 | * |
| 294 | * @return precomputed rewrite string for SRH insertion with BSID |
| 295 | */ |
| 296 | static inline u8 * |
| 297 | compute_rewrite_bsid (ip6_address_t * sl) |
| 298 | { |
| 299 | ip6_sr_header_t *srh; |
| 300 | ip6_address_t *addrp, *this_address; |
| 301 | u32 header_length = 0; |
| 302 | u8 *rs = NULL; |
| 303 | |
| 304 | header_length = 0; |
| 305 | header_length += sizeof (ip6_sr_header_t); |
| 306 | header_length += vec_len (sl) * sizeof (ip6_address_t); |
| 307 | |
| 308 | vec_validate (rs, header_length - 1); |
| 309 | |
| 310 | srh = (ip6_sr_header_t *) rs; |
| 311 | srh->type = ROUTING_HEADER_TYPE_SR; |
| 312 | srh->segments_left = vec_len (sl) - 1; |
Ahmed Abdelsalam | be83704 | 2019-06-20 11:18:57 +0000 | [diff] [blame] | 313 | srh->last_entry = vec_len (sl) - 1; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 314 | srh->length = ((sizeof (ip6_sr_header_t) + |
| 315 | (vec_len (sl) * sizeof (ip6_address_t))) / 8) - 1; |
| 316 | srh->flags = 0x00; |
Ahmed Abdelsalam | be83704 | 2019-06-20 11:18:57 +0000 | [diff] [blame] | 317 | srh->tag = 0x0000; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 318 | addrp = srh->segments + vec_len (sl) - 1; |
| 319 | vec_foreach (this_address, sl) |
| 320 | { |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 321 | clib_memcpy_fast (addrp->as_u8, this_address->as_u8, |
| 322 | sizeof (ip6_address_t)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 323 | addrp--; |
| 324 | } |
| 325 | return rs; |
| 326 | } |
| 327 | |
| 328 | /*************************** SR LB helper functions **************************/ |
| 329 | /** |
| 330 | * @brief Creates a Segment List and adds it to an SR policy |
| 331 | * |
| 332 | * Creates a Segment List and adds it to the SR policy. Notice that the SL are |
| 333 | * not necessarily unique. Hence there might be two Segment List within the |
| 334 | * same SR Policy with exactly the same segments and same weight. |
| 335 | * |
| 336 | * @param sr_policy is the SR policy where the SL will be added |
| 337 | * @param sl is a vector of IPv6 addresses composing the Segment List |
| 338 | * @param weight is the weight of the SegmentList (for load-balancing purposes) |
| 339 | * @param is_encap represents the mode (SRH insertion vs Encapsulation) |
| 340 | * |
| 341 | * @return pointer to the just created segment list |
| 342 | */ |
| 343 | static inline ip6_sr_sl_t * |
| 344 | create_sl (ip6_sr_policy_t * sr_policy, ip6_address_t * sl, u32 weight, |
| 345 | u8 is_encap) |
| 346 | { |
| 347 | ip6_sr_main_t *sm = &sr_main; |
| 348 | ip6_sr_sl_t *segment_list; |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 349 | sr_policy_fn_registration_t *plugin = 0; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 350 | |
| 351 | pool_get (sm->sid_lists, segment_list); |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 352 | clib_memset (segment_list, 0, sizeof (*segment_list)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 353 | |
| 354 | vec_add1 (sr_policy->segments_lists, segment_list - sm->sid_lists); |
| 355 | |
| 356 | /* Fill in segment list */ |
| 357 | segment_list->weight = |
| 358 | (weight != (u32) ~ 0 ? weight : SR_SEGMENT_LIST_WEIGHT_DEFAULT); |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 359 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 360 | segment_list->segments = vec_dup (sl); |
| 361 | |
| 362 | if (is_encap) |
| 363 | { |
| 364 | segment_list->rewrite = compute_rewrite_encaps (sl); |
| 365 | segment_list->rewrite_bsid = segment_list->rewrite; |
| 366 | } |
| 367 | else |
| 368 | { |
| 369 | segment_list->rewrite = compute_rewrite_insert (sl); |
| 370 | segment_list->rewrite_bsid = compute_rewrite_bsid (sl); |
| 371 | } |
| 372 | |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 373 | if (sr_policy->plugin) |
| 374 | { |
| 375 | plugin = |
| 376 | pool_elt_at_index (sm->policy_plugin_functions, |
| 377 | sr_policy->plugin - SR_BEHAVIOR_LAST); |
| 378 | |
| 379 | segment_list->plugin = sr_policy->plugin; |
| 380 | segment_list->plugin_mem = sr_policy->plugin_mem; |
| 381 | |
| 382 | plugin->creation (sr_policy); |
| 383 | } |
| 384 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 385 | /* Create DPO */ |
| 386 | dpo_reset (&segment_list->bsid_dpo); |
| 387 | dpo_reset (&segment_list->ip6_dpo); |
| 388 | dpo_reset (&segment_list->ip4_dpo); |
| 389 | |
| 390 | if (is_encap) |
| 391 | { |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 392 | if (!sr_policy->plugin) |
| 393 | { |
| 394 | dpo_set (&segment_list->ip6_dpo, sr_pr_encaps_dpo_type, |
| 395 | DPO_PROTO_IP6, segment_list - sm->sid_lists); |
| 396 | dpo_set (&segment_list->ip4_dpo, sr_pr_encaps_dpo_type, |
| 397 | DPO_PROTO_IP4, segment_list - sm->sid_lists); |
| 398 | dpo_set (&segment_list->bsid_dpo, sr_pr_bsid_encaps_dpo_type, |
| 399 | DPO_PROTO_IP6, segment_list - sm->sid_lists); |
| 400 | } |
| 401 | else |
| 402 | { |
| 403 | dpo_set (&segment_list->ip6_dpo, plugin->dpo, DPO_PROTO_IP6, |
| 404 | segment_list - sm->sid_lists); |
| 405 | dpo_set (&segment_list->ip4_dpo, plugin->dpo, DPO_PROTO_IP4, |
| 406 | segment_list - sm->sid_lists); |
| 407 | dpo_set (&segment_list->bsid_dpo, plugin->dpo, DPO_PROTO_IP6, |
| 408 | segment_list - sm->sid_lists); |
| 409 | } |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 410 | } |
| 411 | else |
| 412 | { |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 413 | if (!sr_policy->plugin) |
| 414 | { |
| 415 | dpo_set (&segment_list->ip6_dpo, sr_pr_insert_dpo_type, |
| 416 | DPO_PROTO_IP6, segment_list - sm->sid_lists); |
| 417 | dpo_set (&segment_list->bsid_dpo, sr_pr_bsid_insert_dpo_type, |
| 418 | DPO_PROTO_IP6, segment_list - sm->sid_lists); |
| 419 | } |
| 420 | else |
| 421 | { |
| 422 | dpo_set (&segment_list->ip6_dpo, plugin->dpo, DPO_PROTO_IP6, |
| 423 | segment_list - sm->sid_lists); |
| 424 | dpo_set (&segment_list->bsid_dpo, plugin->dpo, DPO_PROTO_IP6, |
| 425 | segment_list - sm->sid_lists); |
| 426 | } |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | return segment_list; |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * @brief Updates the Load Balancer after an SR Policy change |
| 434 | * |
| 435 | * @param sr_policy is the modified SR Policy |
| 436 | */ |
| 437 | static inline void |
| 438 | update_lb (ip6_sr_policy_t * sr_policy) |
| 439 | { |
| 440 | flow_hash_config_t fhc; |
| 441 | u32 *sl_index; |
| 442 | ip6_sr_sl_t *segment_list; |
| 443 | ip6_sr_main_t *sm = &sr_main; |
| 444 | load_balance_path_t path; |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 445 | path.path_index = FIB_NODE_INDEX_INVALID; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 446 | load_balance_path_t *ip4_path_vector = 0; |
| 447 | load_balance_path_t *ip6_path_vector = 0; |
| 448 | load_balance_path_t *b_path_vector = 0; |
| 449 | |
| 450 | /* In case LB does not exist, create it */ |
| 451 | if (!dpo_id_is_valid (&sr_policy->bsid_dpo)) |
| 452 | { |
| 453 | fib_prefix_t pfx = { |
| 454 | .fp_proto = FIB_PROTOCOL_IP6, |
| 455 | .fp_len = 128, |
| 456 | .fp_addr = { |
| 457 | .ip6 = sr_policy->bsid, |
| 458 | } |
| 459 | }; |
| 460 | |
| 461 | /* Add FIB entry for BSID */ |
| 462 | fhc = fib_table_get_flow_hash_config (sr_policy->fib_table, |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 463 | FIB_PROTOCOL_IP6); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 464 | |
| 465 | dpo_set (&sr_policy->bsid_dpo, DPO_LOAD_BALANCE, DPO_PROTO_IP6, |
| 466 | load_balance_create (0, DPO_PROTO_IP6, fhc)); |
| 467 | |
| 468 | dpo_set (&sr_policy->ip6_dpo, DPO_LOAD_BALANCE, DPO_PROTO_IP6, |
| 469 | load_balance_create (0, DPO_PROTO_IP6, fhc)); |
| 470 | |
| 471 | /* Update FIB entry's to point to the LB DPO in the main FIB and hidden one */ |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 472 | fib_table_entry_special_dpo_update (fib_table_find (FIB_PROTOCOL_IP6, |
| 473 | sr_policy->fib_table), |
| 474 | &pfx, FIB_SOURCE_SR, |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 475 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 476 | &sr_policy->bsid_dpo); |
| 477 | |
| 478 | fib_table_entry_special_dpo_update (sm->fib_table_ip6, |
| 479 | &pfx, |
| 480 | FIB_SOURCE_SR, |
| 481 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 482 | &sr_policy->ip6_dpo); |
| 483 | |
| 484 | if (sr_policy->is_encap) |
| 485 | { |
| 486 | dpo_set (&sr_policy->ip4_dpo, DPO_LOAD_BALANCE, DPO_PROTO_IP4, |
| 487 | load_balance_create (0, DPO_PROTO_IP4, fhc)); |
| 488 | |
| 489 | fib_table_entry_special_dpo_update (sm->fib_table_ip4, |
| 490 | &pfx, |
| 491 | FIB_SOURCE_SR, |
| 492 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 493 | &sr_policy->ip4_dpo); |
| 494 | } |
| 495 | |
| 496 | } |
| 497 | |
| 498 | /* Create the LB path vector */ |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 499 | vec_foreach (sl_index, sr_policy->segments_lists) |
| 500 | { |
| 501 | segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); |
| 502 | path.path_dpo = segment_list->bsid_dpo; |
| 503 | path.path_weight = segment_list->weight; |
| 504 | vec_add1 (b_path_vector, path); |
| 505 | path.path_dpo = segment_list->ip6_dpo; |
| 506 | vec_add1 (ip6_path_vector, path); |
| 507 | if (sr_policy->is_encap) |
| 508 | { |
| 509 | path.path_dpo = segment_list->ip4_dpo; |
| 510 | vec_add1 (ip4_path_vector, path); |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | /* Update LB multipath */ |
| 515 | load_balance_multipath_update (&sr_policy->bsid_dpo, b_path_vector, |
| 516 | LOAD_BALANCE_FLAG_NONE); |
| 517 | load_balance_multipath_update (&sr_policy->ip6_dpo, ip6_path_vector, |
| 518 | LOAD_BALANCE_FLAG_NONE); |
| 519 | if (sr_policy->is_encap) |
| 520 | load_balance_multipath_update (&sr_policy->ip4_dpo, ip4_path_vector, |
| 521 | LOAD_BALANCE_FLAG_NONE); |
| 522 | |
| 523 | /* Cleanup */ |
| 524 | vec_free (b_path_vector); |
| 525 | vec_free (ip6_path_vector); |
| 526 | vec_free (ip4_path_vector); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | /** |
| 530 | * @brief Updates the Replicate DPO after an SR Policy change |
| 531 | * |
| 532 | * @param sr_policy is the modified SR Policy (type spray) |
| 533 | */ |
| 534 | static inline void |
| 535 | update_replicate (ip6_sr_policy_t * sr_policy) |
| 536 | { |
| 537 | u32 *sl_index; |
| 538 | ip6_sr_sl_t *segment_list; |
| 539 | ip6_sr_main_t *sm = &sr_main; |
| 540 | load_balance_path_t path; |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 541 | path.path_index = FIB_NODE_INDEX_INVALID; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 542 | load_balance_path_t *b_path_vector = 0; |
| 543 | load_balance_path_t *ip6_path_vector = 0; |
| 544 | load_balance_path_t *ip4_path_vector = 0; |
| 545 | |
| 546 | /* In case LB does not exist, create it */ |
| 547 | if (!dpo_id_is_valid (&sr_policy->bsid_dpo)) |
| 548 | { |
| 549 | dpo_set (&sr_policy->bsid_dpo, DPO_REPLICATE, |
| 550 | DPO_PROTO_IP6, replicate_create (0, DPO_PROTO_IP6)); |
| 551 | |
| 552 | dpo_set (&sr_policy->ip6_dpo, DPO_REPLICATE, |
| 553 | DPO_PROTO_IP6, replicate_create (0, DPO_PROTO_IP6)); |
| 554 | |
| 555 | /* Update FIB entry's DPO to point to SR without LB */ |
| 556 | fib_prefix_t pfx = { |
| 557 | .fp_proto = FIB_PROTOCOL_IP6, |
| 558 | .fp_len = 128, |
| 559 | .fp_addr = { |
| 560 | .ip6 = sr_policy->bsid, |
| 561 | } |
| 562 | }; |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 563 | fib_table_entry_special_dpo_update (fib_table_find (FIB_PROTOCOL_IP6, |
| 564 | sr_policy->fib_table), |
| 565 | &pfx, FIB_SOURCE_SR, |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 566 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 567 | &sr_policy->bsid_dpo); |
| 568 | |
| 569 | fib_table_entry_special_dpo_update (sm->fib_table_ip6, |
| 570 | &pfx, |
| 571 | FIB_SOURCE_SR, |
| 572 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 573 | &sr_policy->ip6_dpo); |
| 574 | |
| 575 | if (sr_policy->is_encap) |
| 576 | { |
| 577 | dpo_set (&sr_policy->ip4_dpo, DPO_REPLICATE, DPO_PROTO_IP4, |
| 578 | replicate_create (0, DPO_PROTO_IP4)); |
| 579 | |
| 580 | fib_table_entry_special_dpo_update (sm->fib_table_ip4, |
| 581 | &pfx, |
| 582 | FIB_SOURCE_SR, |
| 583 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 584 | &sr_policy->ip4_dpo); |
| 585 | } |
| 586 | |
| 587 | } |
| 588 | |
| 589 | /* Create the replicate path vector */ |
| 590 | path.path_weight = 1; |
| 591 | vec_foreach (sl_index, sr_policy->segments_lists) |
| 592 | { |
| 593 | segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); |
| 594 | path.path_dpo = segment_list->bsid_dpo; |
| 595 | vec_add1 (b_path_vector, path); |
| 596 | path.path_dpo = segment_list->ip6_dpo; |
| 597 | vec_add1 (ip6_path_vector, path); |
| 598 | if (sr_policy->is_encap) |
| 599 | { |
| 600 | path.path_dpo = segment_list->ip4_dpo; |
| 601 | vec_add1 (ip4_path_vector, path); |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | /* Update replicate multipath */ |
| 606 | replicate_multipath_update (&sr_policy->bsid_dpo, b_path_vector); |
| 607 | replicate_multipath_update (&sr_policy->ip6_dpo, ip6_path_vector); |
| 608 | if (sr_policy->is_encap) |
| 609 | replicate_multipath_update (&sr_policy->ip4_dpo, ip4_path_vector); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | /******************************* SR rewrite API *******************************/ |
| 613 | /* Three functions for handling sr policies: |
| 614 | * -> sr_policy_add |
| 615 | * -> sr_policy_del |
| 616 | * -> sr_policy_mod |
| 617 | * All of them are API. CLI function on sr_policy_command_fn */ |
| 618 | |
| 619 | /** |
| 620 | * @brief Create a new SR policy |
| 621 | * |
| 622 | * @param bsid is the bindingSID of the SR Policy |
| 623 | * @param segments is a vector of IPv6 address composing the segment list |
| 624 | * @param weight is the weight of the sid list. optional. |
| 625 | * @param behavior is the behavior of the SR policy. (default//spray) |
| 626 | * @param fib_table is the VRF where to install the FIB entry for the BSID |
| 627 | * @param is_encap (bool) whether SR policy should behave as Encap/SRH Insertion |
| 628 | * |
| 629 | * @return 0 if correct, else error |
| 630 | */ |
| 631 | int |
| 632 | sr_policy_add (ip6_address_t * bsid, ip6_address_t * segments, |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 633 | u32 weight, u8 behavior, u32 fib_table, u8 is_encap, |
| 634 | u16 plugin, void *ls_plugin_mem) |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 635 | { |
| 636 | ip6_sr_main_t *sm = &sr_main; |
| 637 | ip6_sr_policy_t *sr_policy = 0; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 638 | uword *p; |
| 639 | |
| 640 | /* Search for existing keys (BSID) */ |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 641 | p = mhash_get (&sm->sr_policies_index_hash, bsid); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 642 | if (p) |
| 643 | { |
| 644 | /* Add SR policy that already exists; complain */ |
| 645 | return -12; |
| 646 | } |
| 647 | |
| 648 | /* Search collision in FIB entries */ |
| 649 | /* Explanation: It might be possible that some other entity has already |
| 650 | * created a route for the BSID. This in theory is impossible, but in |
| 651 | * practise we could see it. Assert it and scream if needed */ |
| 652 | fib_prefix_t pfx = { |
| 653 | .fp_proto = FIB_PROTOCOL_IP6, |
| 654 | .fp_len = 128, |
| 655 | .fp_addr = { |
| 656 | .ip6 = *bsid, |
| 657 | } |
| 658 | }; |
| 659 | |
| 660 | /* Lookup the FIB index associated to the table selected */ |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 661 | u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, |
| 662 | (fib_table != (u32) ~ 0 ? fib_table : 0)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 663 | if (fib_index == ~0) |
| 664 | return -13; |
| 665 | |
| 666 | /* Lookup whether there exists an entry for the BSID */ |
| 667 | fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx); |
| 668 | if (FIB_NODE_INDEX_INVALID != fei) |
| 669 | return -12; //There is an entry for such lookup |
| 670 | |
| 671 | /* Add an SR policy object */ |
| 672 | pool_get (sm->sr_policies, sr_policy); |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 673 | clib_memset (sr_policy, 0, sizeof (*sr_policy)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 674 | clib_memcpy_fast (&sr_policy->bsid, bsid, sizeof (ip6_address_t)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 675 | sr_policy->type = behavior; |
| 676 | sr_policy->fib_table = (fib_table != (u32) ~ 0 ? fib_table : 0); //Is default FIB 0 ? |
| 677 | sr_policy->is_encap = is_encap; |
| 678 | |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 679 | if (plugin) |
| 680 | { |
| 681 | sr_policy->plugin = plugin; |
| 682 | sr_policy->plugin_mem = ls_plugin_mem; |
| 683 | } |
| 684 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 685 | /* Copy the key */ |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 686 | mhash_set (&sm->sr_policies_index_hash, bsid, sr_policy - sm->sr_policies, |
| 687 | NULL); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 688 | |
| 689 | /* Create a segment list and add the index to the SR policy */ |
| 690 | create_sl (sr_policy, segments, weight, is_encap); |
| 691 | |
| 692 | /* If FIB doesnt exist, create them */ |
| 693 | if (sm->fib_table_ip6 == (u32) ~ 0) |
| 694 | { |
| 695 | sm->fib_table_ip6 = fib_table_create_and_lock (FIB_PROTOCOL_IP6, |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 696 | FIB_SOURCE_SR, |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 697 | "SRv6 steering of IP6 prefixes through BSIDs"); |
| 698 | sm->fib_table_ip4 = fib_table_create_and_lock (FIB_PROTOCOL_IP6, |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 699 | FIB_SOURCE_SR, |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 700 | "SRv6 steering of IP4 prefixes through BSIDs"); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 701 | } |
| 702 | |
| 703 | /* Create IPv6 FIB for the BindingSID attached to the DPO of the only SL */ |
| 704 | if (sr_policy->type == SR_POLICY_TYPE_DEFAULT) |
| 705 | update_lb (sr_policy); |
| 706 | else if (sr_policy->type == SR_POLICY_TYPE_SPRAY) |
| 707 | update_replicate (sr_policy); |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | /** |
| 712 | * @brief Delete a SR policy |
| 713 | * |
| 714 | * @param bsid is the bindingSID of the SR Policy |
| 715 | * @param index is the index of the SR policy |
| 716 | * |
| 717 | * @return 0 if correct, else error |
| 718 | */ |
| 719 | int |
| 720 | sr_policy_del (ip6_address_t * bsid, u32 index) |
| 721 | { |
| 722 | ip6_sr_main_t *sm = &sr_main; |
| 723 | ip6_sr_policy_t *sr_policy = 0; |
| 724 | ip6_sr_sl_t *segment_list; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 725 | u32 *sl_index; |
| 726 | uword *p; |
| 727 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 728 | if (bsid) |
| 729 | { |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 730 | p = mhash_get (&sm->sr_policies_index_hash, bsid); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 731 | if (p) |
| 732 | sr_policy = pool_elt_at_index (sm->sr_policies, p[0]); |
| 733 | else |
| 734 | return -1; |
| 735 | } |
| 736 | else |
| 737 | { |
| 738 | sr_policy = pool_elt_at_index (sm->sr_policies, index); |
| 739 | if (!sr_policy) |
| 740 | return -1; |
| 741 | } |
| 742 | |
| 743 | /* Remove BindingSID FIB entry */ |
| 744 | fib_prefix_t pfx = { |
| 745 | .fp_proto = FIB_PROTOCOL_IP6, |
| 746 | .fp_len = 128, |
| 747 | .fp_addr = { |
| 748 | .ip6 = sr_policy->bsid, |
| 749 | } |
| 750 | , |
| 751 | }; |
| 752 | |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 753 | fib_table_entry_special_remove (fib_table_find (FIB_PROTOCOL_IP6, |
| 754 | sr_policy->fib_table), |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 755 | &pfx, FIB_SOURCE_SR); |
| 756 | |
| 757 | fib_table_entry_special_remove (sm->fib_table_ip6, &pfx, FIB_SOURCE_SR); |
| 758 | |
| 759 | if (sr_policy->is_encap) |
| 760 | fib_table_entry_special_remove (sm->fib_table_ip4, &pfx, FIB_SOURCE_SR); |
| 761 | |
| 762 | if (dpo_id_is_valid (&sr_policy->bsid_dpo)) |
| 763 | { |
| 764 | dpo_reset (&sr_policy->bsid_dpo); |
| 765 | dpo_reset (&sr_policy->ip4_dpo); |
| 766 | dpo_reset (&sr_policy->ip6_dpo); |
| 767 | } |
| 768 | |
| 769 | /* Clean SID Lists */ |
| 770 | vec_foreach (sl_index, sr_policy->segments_lists) |
| 771 | { |
| 772 | segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); |
| 773 | vec_free (segment_list->segments); |
| 774 | vec_free (segment_list->rewrite); |
Kris Michielsen | 9107443 | 2017-06-22 13:00:20 +0200 | [diff] [blame] | 775 | if (!sr_policy->is_encap) |
| 776 | vec_free (segment_list->rewrite_bsid); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 777 | pool_put_index (sm->sid_lists, *sl_index); |
| 778 | } |
| 779 | |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 780 | if (sr_policy->plugin) |
| 781 | { |
| 782 | sr_policy_fn_registration_t *plugin = 0; |
| 783 | |
| 784 | plugin = |
| 785 | pool_elt_at_index (sm->policy_plugin_functions, |
| 786 | sr_policy->plugin - SR_BEHAVIOR_LAST); |
| 787 | |
| 788 | plugin->removal (sr_policy); |
| 789 | sr_policy->plugin = 0; |
| 790 | sr_policy->plugin_mem = NULL; |
| 791 | } |
| 792 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 793 | /* Remove SR policy entry */ |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 794 | mhash_unset (&sm->sr_policies_index_hash, &sr_policy->bsid, NULL); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 795 | pool_put (sm->sr_policies, sr_policy); |
| 796 | |
| 797 | /* If FIB empty unlock it */ |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 798 | if (!pool_elts (sm->sr_policies) && !pool_elts (sm->steer_policies)) |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 799 | { |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 800 | fib_table_unlock (sm->fib_table_ip6, FIB_PROTOCOL_IP6, FIB_SOURCE_SR); |
| 801 | fib_table_unlock (sm->fib_table_ip4, FIB_PROTOCOL_IP6, FIB_SOURCE_SR); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 802 | sm->fib_table_ip6 = (u32) ~ 0; |
| 803 | sm->fib_table_ip4 = (u32) ~ 0; |
| 804 | } |
| 805 | |
| 806 | return 0; |
| 807 | } |
| 808 | |
| 809 | /** |
| 810 | * @brief Modify an existing SR policy |
| 811 | * |
| 812 | * The possible modifications are adding a new Segment List, modifying an |
| 813 | * existing Segment List (modify the weight only) and delete a given |
| 814 | * Segment List from the SR Policy. |
| 815 | * |
| 816 | * @param bsid is the bindingSID of the SR Policy |
| 817 | * @param index is the index of the SR policy |
| 818 | * @param fib_table is the VRF where to install the FIB entry for the BSID |
| 819 | * @param operation is the operation to perform (among the top ones) |
| 820 | * @param segments is a vector of IPv6 address composing the segment list |
| 821 | * @param sl_index is the index of the Segment List to modify/delete |
| 822 | * @param weight is the weight of the sid list. optional. |
| 823 | * @param is_encap Mode. Encapsulation or SRH insertion. |
| 824 | * |
| 825 | * @return 0 if correct, else error |
| 826 | */ |
| 827 | int |
| 828 | sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table, |
| 829 | u8 operation, ip6_address_t * segments, u32 sl_index, |
| 830 | u32 weight) |
| 831 | { |
| 832 | ip6_sr_main_t *sm = &sr_main; |
| 833 | ip6_sr_policy_t *sr_policy = 0; |
| 834 | ip6_sr_sl_t *segment_list; |
| 835 | u32 *sl_index_iterate; |
| 836 | uword *p; |
| 837 | |
| 838 | if (bsid) |
| 839 | { |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 840 | p = mhash_get (&sm->sr_policies_index_hash, bsid); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 841 | if (p) |
| 842 | sr_policy = pool_elt_at_index (sm->sr_policies, p[0]); |
| 843 | else |
| 844 | return -1; |
| 845 | } |
| 846 | else |
| 847 | { |
| 848 | sr_policy = pool_elt_at_index (sm->sr_policies, index); |
| 849 | if (!sr_policy) |
| 850 | return -1; |
| 851 | } |
| 852 | |
| 853 | if (operation == 1) /* Add SR List to an existing SR policy */ |
| 854 | { |
| 855 | /* Create the new SL */ |
| 856 | segment_list = |
| 857 | create_sl (sr_policy, segments, weight, sr_policy->is_encap); |
| 858 | |
| 859 | /* Create a new LB DPO */ |
| 860 | if (sr_policy->type == SR_POLICY_TYPE_DEFAULT) |
| 861 | update_lb (sr_policy); |
| 862 | else if (sr_policy->type == SR_POLICY_TYPE_SPRAY) |
| 863 | update_replicate (sr_policy); |
| 864 | } |
| 865 | else if (operation == 2) /* Delete SR List from an existing SR policy */ |
| 866 | { |
| 867 | /* Check that currently there are more than one SID list */ |
| 868 | if (vec_len (sr_policy->segments_lists) == 1) |
| 869 | return -21; |
| 870 | |
| 871 | /* Check that the SR list does exist and is assigned to the sr policy */ |
| 872 | vec_foreach (sl_index_iterate, sr_policy->segments_lists) |
| 873 | if (*sl_index_iterate == sl_index) |
| 874 | break; |
| 875 | |
| 876 | if (*sl_index_iterate != sl_index) |
| 877 | return -22; |
| 878 | |
| 879 | /* Remove the lucky SR list that is being kicked out */ |
| 880 | segment_list = pool_elt_at_index (sm->sid_lists, sl_index); |
| 881 | vec_free (segment_list->segments); |
| 882 | vec_free (segment_list->rewrite); |
Kris Michielsen | 9107443 | 2017-06-22 13:00:20 +0200 | [diff] [blame] | 883 | if (!sr_policy->is_encap) |
| 884 | vec_free (segment_list->rewrite_bsid); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 885 | pool_put_index (sm->sid_lists, sl_index); |
| 886 | vec_del1 (sr_policy->segments_lists, |
| 887 | sl_index_iterate - sr_policy->segments_lists); |
| 888 | |
| 889 | /* Create a new LB DPO */ |
| 890 | if (sr_policy->type == SR_POLICY_TYPE_DEFAULT) |
| 891 | update_lb (sr_policy); |
| 892 | else if (sr_policy->type == SR_POLICY_TYPE_SPRAY) |
| 893 | update_replicate (sr_policy); |
| 894 | } |
| 895 | else if (operation == 3) /* Modify the weight of an existing SR List */ |
| 896 | { |
| 897 | /* Find the corresponding SL */ |
| 898 | vec_foreach (sl_index_iterate, sr_policy->segments_lists) |
| 899 | if (*sl_index_iterate == sl_index) |
| 900 | break; |
| 901 | |
| 902 | if (*sl_index_iterate != sl_index) |
| 903 | return -32; |
| 904 | |
| 905 | /* Change the weight */ |
| 906 | segment_list = pool_elt_at_index (sm->sid_lists, sl_index); |
| 907 | segment_list->weight = weight; |
| 908 | |
| 909 | /* Update LB */ |
| 910 | if (sr_policy->type == SR_POLICY_TYPE_DEFAULT) |
| 911 | update_lb (sr_policy); |
| 912 | } |
| 913 | else /* Incorrect op. */ |
| 914 | return -1; |
| 915 | |
| 916 | return 0; |
| 917 | } |
| 918 | |
| 919 | /** |
| 920 | * @brief CLI for 'sr policies' command family |
| 921 | */ |
| 922 | static clib_error_t * |
| 923 | sr_policy_command_fn (vlib_main_t * vm, unformat_input_t * input, |
| 924 | vlib_cli_command_t * cmd) |
| 925 | { |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 926 | ip6_sr_main_t *sm = &sr_main; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 927 | int rv = -1; |
| 928 | char is_del = 0, is_add = 0, is_mod = 0; |
| 929 | char policy_set = 0; |
| 930 | ip6_address_t bsid, next_address; |
| 931 | u32 sr_policy_index = (u32) ~ 0, sl_index = (u32) ~ 0; |
| 932 | u32 weight = (u32) ~ 0, fib_table = (u32) ~ 0; |
| 933 | ip6_address_t *segments = 0, *this_seg; |
| 934 | u8 operation = 0; |
| 935 | char is_encap = 1; |
| 936 | char is_spray = 0; |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 937 | u16 behavior = 0; |
| 938 | void *ls_plugin_mem = 0; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 939 | |
| 940 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 941 | { |
| 942 | if (!is_add && !is_mod && !is_del && unformat (input, "add")) |
| 943 | is_add = 1; |
| 944 | else if (!is_add && !is_mod && !is_del && unformat (input, "del")) |
| 945 | is_del = 1; |
| 946 | else if (!is_add && !is_mod && !is_del && unformat (input, "mod")) |
| 947 | is_mod = 1; |
| 948 | else if (!policy_set |
| 949 | && unformat (input, "bsid %U", unformat_ip6_address, &bsid)) |
| 950 | policy_set = 1; |
| 951 | else if (!is_add && !policy_set |
| 952 | && unformat (input, "index %d", &sr_policy_index)) |
| 953 | policy_set = 1; |
| 954 | else if (unformat (input, "weight %d", &weight)); |
| 955 | else |
| 956 | if (unformat (input, "next %U", unformat_ip6_address, &next_address)) |
| 957 | { |
| 958 | vec_add2 (segments, this_seg, 1); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 959 | clib_memcpy_fast (this_seg->as_u8, next_address.as_u8, |
| 960 | sizeof (*this_seg)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 961 | } |
| 962 | else if (unformat (input, "add sl")) |
| 963 | operation = 1; |
| 964 | else if (unformat (input, "del sl index %d", &sl_index)) |
| 965 | operation = 2; |
| 966 | else if (unformat (input, "mod sl index %d", &sl_index)) |
| 967 | operation = 3; |
| 968 | else if (fib_table == (u32) ~ 0 |
| 969 | && unformat (input, "fib-table %d", &fib_table)); |
| 970 | else if (unformat (input, "encap")) |
| 971 | is_encap = 1; |
| 972 | else if (unformat (input, "insert")) |
| 973 | is_encap = 0; |
| 974 | else if (unformat (input, "spray")) |
| 975 | is_spray = 1; |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 976 | else if (!behavior && unformat (input, "behavior")) |
| 977 | { |
| 978 | sr_policy_fn_registration_t *plugin = 0, **vec_plugins = 0; |
| 979 | sr_policy_fn_registration_t **plugin_it = 0; |
| 980 | |
| 981 | /* *INDENT-OFF* */ |
Damjan Marion | b2c31b6 | 2020-12-13 21:47:40 +0100 | [diff] [blame] | 982 | pool_foreach (plugin, sm->policy_plugin_functions) |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 983 | { |
| 984 | vec_add1 (vec_plugins, plugin); |
Damjan Marion | b2c31b6 | 2020-12-13 21:47:40 +0100 | [diff] [blame] | 985 | } |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 986 | /* *INDENT-ON* */ |
| 987 | |
| 988 | vec_foreach (plugin_it, vec_plugins) |
| 989 | { |
| 990 | if (unformat |
| 991 | (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem)) |
| 992 | { |
| 993 | behavior = (*plugin_it)->sr_policy_function_number; |
| 994 | break; |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | if (!behavior) |
| 999 | { |
| 1000 | return clib_error_return (0, "Invalid behavior"); |
| 1001 | } |
| 1002 | } |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1003 | else |
| 1004 | break; |
| 1005 | } |
| 1006 | |
| 1007 | if (!is_add && !is_mod && !is_del) |
| 1008 | return clib_error_return (0, "Incorrect CLI"); |
| 1009 | |
| 1010 | if (!policy_set) |
| 1011 | return clib_error_return (0, "No SR policy BSID or index specified"); |
| 1012 | |
| 1013 | if (is_add) |
| 1014 | { |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 1015 | if (behavior && vec_len (segments) == 0) |
| 1016 | { |
| 1017 | vec_add2 (segments, this_seg, 1); |
| 1018 | clib_memset (this_seg, 0, sizeof (*this_seg)); |
| 1019 | } |
| 1020 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1021 | if (vec_len (segments) == 0) |
| 1022 | return clib_error_return (0, "No Segment List specified"); |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 1023 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1024 | rv = sr_policy_add (&bsid, segments, weight, |
| 1025 | (is_spray ? SR_POLICY_TYPE_SPRAY : |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 1026 | SR_POLICY_TYPE_DEFAULT), fib_table, is_encap, |
| 1027 | behavior, ls_plugin_mem); |
| 1028 | |
John Lo | d23d39c | 2018-09-13 15:08:08 -0400 | [diff] [blame] | 1029 | vec_free (segments); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1030 | } |
| 1031 | else if (is_del) |
| 1032 | rv = sr_policy_del ((sr_policy_index != (u32) ~ 0 ? NULL : &bsid), |
| 1033 | sr_policy_index); |
| 1034 | else if (is_mod) |
| 1035 | { |
| 1036 | if (!operation) |
| 1037 | return clib_error_return (0, "No SL modification specified"); |
| 1038 | if (operation != 1 && sl_index == (u32) ~ 0) |
| 1039 | return clib_error_return (0, "No Segment List index specified"); |
| 1040 | if (operation == 1 && vec_len (segments) == 0) |
| 1041 | return clib_error_return (0, "No Segment List specified"); |
| 1042 | if (operation == 3 && weight == (u32) ~ 0) |
| 1043 | return clib_error_return (0, "No new weight for the SL specified"); |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 1044 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1045 | rv = sr_policy_mod ((sr_policy_index != (u32) ~ 0 ? NULL : &bsid), |
| 1046 | sr_policy_index, fib_table, operation, segments, |
| 1047 | sl_index, weight); |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 1048 | |
| 1049 | if (segments) |
| 1050 | vec_free (segments); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1051 | } |
| 1052 | |
| 1053 | switch (rv) |
| 1054 | { |
| 1055 | case 0: |
| 1056 | break; |
| 1057 | case 1: |
| 1058 | return 0; |
| 1059 | case -12: |
| 1060 | return clib_error_return (0, |
| 1061 | "There is already a FIB entry for the BindingSID address.\n" |
| 1062 | "The SR policy could not be created."); |
| 1063 | case -13: |
| 1064 | return clib_error_return (0, "The specified FIB table does not exist."); |
| 1065 | case -21: |
| 1066 | return clib_error_return (0, |
| 1067 | "The selected SR policy only contains ONE segment list. " |
| 1068 | "Please remove the SR policy instead"); |
| 1069 | case -22: |
| 1070 | return clib_error_return (0, |
| 1071 | "Could not delete the segment list. " |
| 1072 | "It is not associated with that SR policy."); |
| 1073 | case -32: |
| 1074 | return clib_error_return (0, |
| 1075 | "Could not modify the segment list. " |
| 1076 | "The given SL is not associated with such SR policy."); |
| 1077 | default: |
| 1078 | return clib_error_return (0, "BUG: sr policy returns %d", rv); |
| 1079 | } |
| 1080 | return 0; |
| 1081 | } |
| 1082 | |
| 1083 | /* *INDENT-OFF* */ |
| 1084 | VLIB_CLI_COMMAND (sr_policy_command, static) = { |
| 1085 | .path = "sr policy", |
| 1086 | .short_help = "sr policy [add||del||mod] [bsid 2001::1||index 5] " |
| 1087 | "next A:: next B:: next C:: (weight 1) (fib-table 2) (encap|insert)", |
| 1088 | .long_help = |
| 1089 | "Manipulation of SR policies.\n" |
| 1090 | "A Segment Routing policy may contain several SID lists. Each SID list has\n" |
| 1091 | "an associated weight (default 1), which will result in wECMP (uECMP).\n" |
| 1092 | "Segment Routing policies might be of type encapsulation or srh insertion\n" |
| 1093 | "Each SR policy will be associated with a unique BindingSID.\n" |
| 1094 | "A BindingSID is a locally allocated SegmentID. For every packet that arrives\n" |
| 1095 | "with IPv6_DA:BSID such traffic will be steered into the SR policy.\n" |
| 1096 | "The add command will create a SR policy with its first segment list (sl)\n" |
| 1097 | "The mod command allows you to add, remove, or modify the existing segment lists\n" |
| 1098 | "within an SR policy.\n" |
| 1099 | "The del command allows you to delete a SR policy along with all its associated\n" |
| 1100 | "SID lists.\n", |
| 1101 | .function = sr_policy_command_fn, |
| 1102 | }; |
| 1103 | /* *INDENT-ON* */ |
| 1104 | |
| 1105 | /** |
| 1106 | * @brief CLI to display onscreen all the SR policies |
| 1107 | */ |
| 1108 | static clib_error_t * |
| 1109 | show_sr_policies_command_fn (vlib_main_t * vm, unformat_input_t * input, |
| 1110 | vlib_cli_command_t * cmd) |
| 1111 | { |
| 1112 | ip6_sr_main_t *sm = &sr_main; |
| 1113 | u32 *sl_index; |
| 1114 | ip6_sr_sl_t *segment_list = 0; |
| 1115 | ip6_sr_policy_t *sr_policy = 0; |
| 1116 | ip6_sr_policy_t **vec_policies = 0; |
| 1117 | ip6_address_t *addr; |
| 1118 | u8 *s; |
| 1119 | int i = 0; |
| 1120 | |
| 1121 | vlib_cli_output (vm, "SR policies:"); |
| 1122 | |
| 1123 | /* *INDENT-OFF* */ |
Damjan Marion | b2c31b6 | 2020-12-13 21:47:40 +0100 | [diff] [blame] | 1124 | pool_foreach (sr_policy, sm->sr_policies) |
| 1125 | {vec_add1 (vec_policies, sr_policy); } |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1126 | /* *INDENT-ON* */ |
| 1127 | |
| 1128 | vec_foreach_index (i, vec_policies) |
| 1129 | { |
| 1130 | sr_policy = vec_policies[i]; |
| 1131 | vlib_cli_output (vm, "[%u].-\tBSID: %U", |
| 1132 | (u32) (sr_policy - sm->sr_policies), |
| 1133 | format_ip6_address, &sr_policy->bsid); |
| 1134 | vlib_cli_output (vm, "\tBehavior: %s", |
| 1135 | (sr_policy->is_encap ? "Encapsulation" : |
| 1136 | "SRH insertion")); |
| 1137 | vlib_cli_output (vm, "\tType: %s", |
| 1138 | (sr_policy->type == |
| 1139 | SR_POLICY_TYPE_DEFAULT ? "Default" : "Spray")); |
| 1140 | vlib_cli_output (vm, "\tFIB table: %u", |
| 1141 | (sr_policy->fib_table != |
| 1142 | (u32) ~ 0 ? sr_policy->fib_table : 0)); |
| 1143 | vlib_cli_output (vm, "\tSegment Lists:"); |
| 1144 | vec_foreach (sl_index, sr_policy->segments_lists) |
| 1145 | { |
| 1146 | s = NULL; |
| 1147 | s = format (s, "\t[%u].- ", *sl_index); |
| 1148 | segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); |
| 1149 | s = format (s, "< "); |
| 1150 | vec_foreach (addr, segment_list->segments) |
| 1151 | { |
| 1152 | s = format (s, "%U, ", format_ip6_address, addr); |
| 1153 | } |
| 1154 | s = format (s, "\b\b > "); |
| 1155 | s = format (s, "weight: %u", segment_list->weight); |
Benoît Ganne | b975354 | 2020-04-17 12:11:26 +0200 | [diff] [blame] | 1156 | vlib_cli_output (vm, " %v", s); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1157 | } |
| 1158 | vlib_cli_output (vm, "-----------"); |
| 1159 | } |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | /* *INDENT-OFF* */ |
| 1164 | VLIB_CLI_COMMAND (show_sr_policies_command, static) = { |
| 1165 | .path = "show sr policies", |
| 1166 | .short_help = "show sr policies", |
| 1167 | .function = show_sr_policies_command_fn, |
| 1168 | }; |
| 1169 | /* *INDENT-ON* */ |
| 1170 | |
Ahmed Abdelsalam | 448bc81 | 2020-11-09 14:04:07 +0000 | [diff] [blame] | 1171 | /** |
| 1172 | * @brief CLI to display onscreen the SR encaps source addr |
| 1173 | */ |
| 1174 | static clib_error_t * |
| 1175 | show_sr_encaps_source_command_fn (vlib_main_t * vm, unformat_input_t * input, |
| 1176 | vlib_cli_command_t * cmd) |
| 1177 | { |
| 1178 | vlib_cli_output (vm, "SR encaps source addr = %U", format_ip6_address, |
| 1179 | sr_get_encaps_source ()); |
| 1180 | |
| 1181 | return 0; |
| 1182 | } |
| 1183 | |
| 1184 | /* *INDENT-OFF* */ |
| 1185 | VLIB_CLI_COMMAND (show_sr_encaps_source_command, static) = { |
| 1186 | .path = "show sr encaps source addr", |
| 1187 | .short_help = "show sr encaps source addr", |
| 1188 | .function = show_sr_encaps_source_command_fn, |
| 1189 | }; |
| 1190 | /* *INDENT-ON* */ |
| 1191 | |
Ahmed Abdelsalam | 80f0b88 | 2020-11-10 17:19:12 +0000 | [diff] [blame] | 1192 | /** |
| 1193 | * @brief CLI to display onscreen the hop-limit value used for SRv6 encapsulation |
| 1194 | */ |
| 1195 | static clib_error_t * |
| 1196 | show_sr_encaps_hop_limit_command_fn (vlib_main_t * vm, |
| 1197 | unformat_input_t * input, |
| 1198 | vlib_cli_command_t * cmd) |
| 1199 | { |
| 1200 | vlib_cli_output (vm, "SR encaps hop-limit = %u", sr_get_hop_limit ()); |
| 1201 | |
| 1202 | return 0; |
| 1203 | } |
| 1204 | |
| 1205 | /* *INDENT-OFF* */ |
| 1206 | VLIB_CLI_COMMAND (show_sr_encaps_hop_limit_command, static) = { |
| 1207 | .path = "show sr encaps hop-limit", |
| 1208 | .short_help = "show sr encaps hop-limit", |
| 1209 | .function = show_sr_encaps_hop_limit_command_fn, |
| 1210 | }; |
| 1211 | /* *INDENT-ON* */ |
| 1212 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1213 | /*************************** SR rewrite graph node ****************************/ |
| 1214 | /** |
| 1215 | * @brief Trace for the SR Policy Rewrite graph node |
| 1216 | */ |
| 1217 | static u8 * |
| 1218 | format_sr_policy_rewrite_trace (u8 * s, va_list * args) |
| 1219 | { |
| 1220 | //TODO |
| 1221 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1222 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
| 1223 | sr_policy_rewrite_trace_t *t = va_arg (*args, sr_policy_rewrite_trace_t *); |
| 1224 | |
| 1225 | s = format |
| 1226 | (s, "SR-policy-rewrite: src %U dst %U", |
| 1227 | format_ip6_address, &t->src, format_ip6_address, &t->dst); |
| 1228 | |
| 1229 | return s; |
| 1230 | } |
| 1231 | |
| 1232 | /** |
| 1233 | * @brief IPv6 encapsulation processing as per RFC2473 |
| 1234 | */ |
| 1235 | static_always_inline void |
| 1236 | encaps_processing_v6 (vlib_node_runtime_t * node, |
| 1237 | vlib_buffer_t * b0, |
| 1238 | ip6_header_t * ip0, ip6_header_t * ip0_encap) |
| 1239 | { |
| 1240 | u32 new_l0; |
| 1241 | |
| 1242 | ip0_encap->hop_limit -= 1; |
| 1243 | new_l0 = |
| 1244 | ip0->payload_length + sizeof (ip6_header_t) + |
| 1245 | clib_net_to_host_u16 (ip0_encap->payload_length); |
| 1246 | ip0->payload_length = clib_host_to_net_u16 (new_l0); |
| 1247 | ip0->ip_version_traffic_class_and_flow_label = |
| 1248 | ip0_encap->ip_version_traffic_class_and_flow_label; |
| 1249 | } |
| 1250 | |
| 1251 | /** |
| 1252 | * @brief Graph node for applying a SR policy into an IPv6 packet. Encapsulation |
| 1253 | */ |
| 1254 | static uword |
| 1255 | sr_policy_rewrite_encaps (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1256 | vlib_frame_t * from_frame) |
| 1257 | { |
| 1258 | ip6_sr_main_t *sm = &sr_main; |
| 1259 | u32 n_left_from, next_index, *from, *to_next; |
| 1260 | |
| 1261 | from = vlib_frame_vector_args (from_frame); |
| 1262 | n_left_from = from_frame->n_vectors; |
| 1263 | |
| 1264 | next_index = node->cached_next_index; |
| 1265 | |
| 1266 | int encap_pkts = 0, bsid_pkts = 0; |
| 1267 | |
| 1268 | while (n_left_from > 0) |
| 1269 | { |
| 1270 | u32 n_left_to_next; |
| 1271 | |
| 1272 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 1273 | |
| 1274 | /* Quad - Loop */ |
| 1275 | while (n_left_from >= 8 && n_left_to_next >= 4) |
| 1276 | { |
| 1277 | u32 bi0, bi1, bi2, bi3; |
| 1278 | vlib_buffer_t *b0, *b1, *b2, *b3; |
| 1279 | u32 next0, next1, next2, next3; |
| 1280 | next0 = next1 = next2 = next3 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 1281 | ip6_header_t *ip0, *ip1, *ip2, *ip3; |
| 1282 | ip6_header_t *ip0_encap, *ip1_encap, *ip2_encap, *ip3_encap; |
| 1283 | ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; |
| 1284 | |
| 1285 | /* Prefetch next iteration. */ |
| 1286 | { |
| 1287 | vlib_buffer_t *p4, *p5, *p6, *p7; |
| 1288 | |
| 1289 | p4 = vlib_get_buffer (vm, from[4]); |
| 1290 | p5 = vlib_get_buffer (vm, from[5]); |
| 1291 | p6 = vlib_get_buffer (vm, from[6]); |
| 1292 | p7 = vlib_get_buffer (vm, from[7]); |
| 1293 | |
| 1294 | /* Prefetch the buffer header and packet for the N+2 loop iteration */ |
| 1295 | vlib_prefetch_buffer_header (p4, LOAD); |
| 1296 | vlib_prefetch_buffer_header (p5, LOAD); |
| 1297 | vlib_prefetch_buffer_header (p6, LOAD); |
| 1298 | vlib_prefetch_buffer_header (p7, LOAD); |
| 1299 | |
| 1300 | CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1301 | CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1302 | CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1303 | CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1304 | } |
| 1305 | |
| 1306 | to_next[0] = bi0 = from[0]; |
| 1307 | to_next[1] = bi1 = from[1]; |
| 1308 | to_next[2] = bi2 = from[2]; |
| 1309 | to_next[3] = bi3 = from[3]; |
| 1310 | from += 4; |
| 1311 | to_next += 4; |
| 1312 | n_left_from -= 4; |
| 1313 | n_left_to_next -= 4; |
| 1314 | |
| 1315 | b0 = vlib_get_buffer (vm, bi0); |
| 1316 | b1 = vlib_get_buffer (vm, bi1); |
| 1317 | b2 = vlib_get_buffer (vm, bi2); |
| 1318 | b3 = vlib_get_buffer (vm, bi3); |
| 1319 | |
| 1320 | sl0 = |
| 1321 | pool_elt_at_index (sm->sid_lists, |
| 1322 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
| 1323 | sl1 = |
| 1324 | pool_elt_at_index (sm->sid_lists, |
| 1325 | vnet_buffer (b1)->ip.adj_index[VLIB_TX]); |
| 1326 | sl2 = |
| 1327 | pool_elt_at_index (sm->sid_lists, |
| 1328 | vnet_buffer (b2)->ip.adj_index[VLIB_TX]); |
| 1329 | sl3 = |
| 1330 | pool_elt_at_index (sm->sid_lists, |
| 1331 | vnet_buffer (b3)->ip.adj_index[VLIB_TX]); |
| 1332 | |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 1333 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1334 | vec_len (sl0->rewrite)); |
| 1335 | ASSERT (b1->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1336 | vec_len (sl1->rewrite)); |
| 1337 | ASSERT (b2->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1338 | vec_len (sl2->rewrite)); |
| 1339 | ASSERT (b3->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1340 | vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1341 | |
| 1342 | ip0_encap = vlib_buffer_get_current (b0); |
| 1343 | ip1_encap = vlib_buffer_get_current (b1); |
| 1344 | ip2_encap = vlib_buffer_get_current (b2); |
| 1345 | ip3_encap = vlib_buffer_get_current (b3); |
| 1346 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1347 | clib_memcpy_fast (((u8 *) ip0_encap) - vec_len (sl0->rewrite), |
| 1348 | sl0->rewrite, vec_len (sl0->rewrite)); |
| 1349 | clib_memcpy_fast (((u8 *) ip1_encap) - vec_len (sl1->rewrite), |
| 1350 | sl1->rewrite, vec_len (sl1->rewrite)); |
| 1351 | clib_memcpy_fast (((u8 *) ip2_encap) - vec_len (sl2->rewrite), |
| 1352 | sl2->rewrite, vec_len (sl2->rewrite)); |
| 1353 | clib_memcpy_fast (((u8 *) ip3_encap) - vec_len (sl3->rewrite), |
| 1354 | sl3->rewrite, vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1355 | |
| 1356 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 1357 | vlib_buffer_advance (b1, -(word) vec_len (sl1->rewrite)); |
| 1358 | vlib_buffer_advance (b2, -(word) vec_len (sl2->rewrite)); |
| 1359 | vlib_buffer_advance (b3, -(word) vec_len (sl3->rewrite)); |
| 1360 | |
| 1361 | ip0 = vlib_buffer_get_current (b0); |
| 1362 | ip1 = vlib_buffer_get_current (b1); |
| 1363 | ip2 = vlib_buffer_get_current (b2); |
| 1364 | ip3 = vlib_buffer_get_current (b3); |
| 1365 | |
| 1366 | encaps_processing_v6 (node, b0, ip0, ip0_encap); |
| 1367 | encaps_processing_v6 (node, b1, ip1, ip1_encap); |
| 1368 | encaps_processing_v6 (node, b2, ip2, ip2_encap); |
| 1369 | encaps_processing_v6 (node, b3, ip3, ip3_encap); |
| 1370 | |
| 1371 | if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) |
| 1372 | { |
| 1373 | if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 1374 | { |
| 1375 | sr_policy_rewrite_trace_t *tr = |
| 1376 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1377 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 1378 | sizeof (tr->src.as_u8)); |
| 1379 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 1380 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1381 | } |
| 1382 | |
| 1383 | if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) |
| 1384 | { |
| 1385 | sr_policy_rewrite_trace_t *tr = |
| 1386 | vlib_add_trace (vm, node, b1, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1387 | clib_memcpy_fast (tr->src.as_u8, ip1->src_address.as_u8, |
| 1388 | sizeof (tr->src.as_u8)); |
| 1389 | clib_memcpy_fast (tr->dst.as_u8, ip1->dst_address.as_u8, |
| 1390 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1391 | } |
| 1392 | |
| 1393 | if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED)) |
| 1394 | { |
| 1395 | sr_policy_rewrite_trace_t *tr = |
| 1396 | vlib_add_trace (vm, node, b2, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1397 | clib_memcpy_fast (tr->src.as_u8, ip2->src_address.as_u8, |
| 1398 | sizeof (tr->src.as_u8)); |
| 1399 | clib_memcpy_fast (tr->dst.as_u8, ip2->dst_address.as_u8, |
| 1400 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1401 | } |
| 1402 | |
| 1403 | if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED)) |
| 1404 | { |
| 1405 | sr_policy_rewrite_trace_t *tr = |
| 1406 | vlib_add_trace (vm, node, b3, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1407 | clib_memcpy_fast (tr->src.as_u8, ip3->src_address.as_u8, |
| 1408 | sizeof (tr->src.as_u8)); |
| 1409 | clib_memcpy_fast (tr->dst.as_u8, ip3->dst_address.as_u8, |
| 1410 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | encap_pkts += 4; |
| 1415 | vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, |
| 1416 | n_left_to_next, bi0, bi1, bi2, bi3, |
| 1417 | next0, next1, next2, next3); |
| 1418 | } |
| 1419 | |
| 1420 | /* Single loop for potentially the last three packets */ |
| 1421 | while (n_left_from > 0 && n_left_to_next > 0) |
| 1422 | { |
| 1423 | u32 bi0; |
| 1424 | vlib_buffer_t *b0; |
| 1425 | ip6_header_t *ip0 = 0, *ip0_encap = 0; |
| 1426 | ip6_sr_sl_t *sl0; |
| 1427 | u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 1428 | |
| 1429 | bi0 = from[0]; |
| 1430 | to_next[0] = bi0; |
| 1431 | from += 1; |
| 1432 | to_next += 1; |
| 1433 | n_left_from -= 1; |
| 1434 | n_left_to_next -= 1; |
| 1435 | b0 = vlib_get_buffer (vm, bi0); |
| 1436 | |
| 1437 | sl0 = |
| 1438 | pool_elt_at_index (sm->sid_lists, |
| 1439 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 1440 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1441 | vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1442 | |
| 1443 | ip0_encap = vlib_buffer_get_current (b0); |
| 1444 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1445 | clib_memcpy_fast (((u8 *) ip0_encap) - vec_len (sl0->rewrite), |
| 1446 | sl0->rewrite, vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1447 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 1448 | |
| 1449 | ip0 = vlib_buffer_get_current (b0); |
| 1450 | |
| 1451 | encaps_processing_v6 (node, b0, ip0, ip0_encap); |
| 1452 | |
| 1453 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && |
| 1454 | PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 1455 | { |
| 1456 | sr_policy_rewrite_trace_t *tr = |
| 1457 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1458 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 1459 | sizeof (tr->src.as_u8)); |
| 1460 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 1461 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1462 | } |
| 1463 | |
| 1464 | encap_pkts++; |
| 1465 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 1466 | n_left_to_next, bi0, next0); |
| 1467 | } |
| 1468 | |
| 1469 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 1470 | } |
| 1471 | |
| 1472 | /* Update counters */ |
| 1473 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 1474 | SR_POLICY_REWRITE_ERROR_COUNTER_TOTAL, |
| 1475 | encap_pkts); |
| 1476 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 1477 | SR_POLICY_REWRITE_ERROR_COUNTER_BSID, |
| 1478 | bsid_pkts); |
| 1479 | |
| 1480 | return from_frame->n_vectors; |
| 1481 | } |
| 1482 | |
| 1483 | /* *INDENT-OFF* */ |
| 1484 | VLIB_REGISTER_NODE (sr_policy_rewrite_encaps_node) = { |
| 1485 | .function = sr_policy_rewrite_encaps, |
| 1486 | .name = "sr-pl-rewrite-encaps", |
| 1487 | .vector_size = sizeof (u32), |
| 1488 | .format_trace = format_sr_policy_rewrite_trace, |
| 1489 | .type = VLIB_NODE_TYPE_INTERNAL, |
| 1490 | .n_errors = SR_POLICY_REWRITE_N_ERROR, |
| 1491 | .error_strings = sr_policy_rewrite_error_strings, |
| 1492 | .n_next_nodes = SR_POLICY_REWRITE_N_NEXT, |
| 1493 | .next_nodes = { |
| 1494 | #define _(s,n) [SR_POLICY_REWRITE_NEXT_##s] = n, |
| 1495 | foreach_sr_policy_rewrite_next |
| 1496 | #undef _ |
| 1497 | }, |
| 1498 | }; |
| 1499 | /* *INDENT-ON* */ |
| 1500 | |
| 1501 | /** |
| 1502 | * @brief IPv4 encapsulation processing as per RFC2473 |
| 1503 | */ |
| 1504 | static_always_inline void |
| 1505 | encaps_processing_v4 (vlib_node_runtime_t * node, |
| 1506 | vlib_buffer_t * b0, |
| 1507 | ip6_header_t * ip0, ip4_header_t * ip0_encap) |
| 1508 | { |
| 1509 | u32 new_l0; |
| 1510 | ip6_sr_header_t *sr0; |
| 1511 | |
| 1512 | u32 checksum0; |
| 1513 | |
| 1514 | /* Inner IPv4: Decrement TTL & update checksum */ |
| 1515 | ip0_encap->ttl -= 1; |
| 1516 | checksum0 = ip0_encap->checksum + clib_host_to_net_u16 (0x0100); |
| 1517 | checksum0 += checksum0 >= 0xffff; |
| 1518 | ip0_encap->checksum = checksum0; |
| 1519 | |
| 1520 | /* Outer IPv6: Update length, FL, proto */ |
| 1521 | new_l0 = ip0->payload_length + clib_net_to_host_u16 (ip0_encap->length); |
| 1522 | ip0->payload_length = clib_host_to_net_u16 (new_l0); |
| 1523 | ip0->ip_version_traffic_class_and_flow_label = |
| 1524 | clib_host_to_net_u32 (0 | ((6 & 0xF) << 28) | |
| 1525 | ((ip0_encap->tos & 0xFF) << 20)); |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 1526 | if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE) |
| 1527 | { |
| 1528 | sr0 = (void *) (ip0 + 1); |
| 1529 | sr0->protocol = IP_PROTOCOL_IP_IN_IP; |
| 1530 | } |
| 1531 | else |
| 1532 | ip0->protocol = IP_PROTOCOL_IP_IN_IP; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1533 | } |
| 1534 | |
| 1535 | /** |
| 1536 | * @brief Graph node for applying a SR policy into an IPv4 packet. Encapsulation |
| 1537 | */ |
| 1538 | static uword |
| 1539 | sr_policy_rewrite_encaps_v4 (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1540 | vlib_frame_t * from_frame) |
| 1541 | { |
| 1542 | ip6_sr_main_t *sm = &sr_main; |
| 1543 | u32 n_left_from, next_index, *from, *to_next; |
| 1544 | |
| 1545 | from = vlib_frame_vector_args (from_frame); |
| 1546 | n_left_from = from_frame->n_vectors; |
| 1547 | |
| 1548 | next_index = node->cached_next_index; |
| 1549 | |
| 1550 | int encap_pkts = 0, bsid_pkts = 0; |
| 1551 | |
| 1552 | while (n_left_from > 0) |
| 1553 | { |
| 1554 | u32 n_left_to_next; |
| 1555 | |
| 1556 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 1557 | |
| 1558 | /* Quad - Loop */ |
| 1559 | while (n_left_from >= 8 && n_left_to_next >= 4) |
| 1560 | { |
| 1561 | u32 bi0, bi1, bi2, bi3; |
| 1562 | vlib_buffer_t *b0, *b1, *b2, *b3; |
| 1563 | u32 next0, next1, next2, next3; |
| 1564 | next0 = next1 = next2 = next3 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 1565 | ip6_header_t *ip0, *ip1, *ip2, *ip3; |
| 1566 | ip4_header_t *ip0_encap, *ip1_encap, *ip2_encap, *ip3_encap; |
| 1567 | ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; |
| 1568 | |
| 1569 | /* Prefetch next iteration. */ |
| 1570 | { |
| 1571 | vlib_buffer_t *p4, *p5, *p6, *p7; |
| 1572 | |
| 1573 | p4 = vlib_get_buffer (vm, from[4]); |
| 1574 | p5 = vlib_get_buffer (vm, from[5]); |
| 1575 | p6 = vlib_get_buffer (vm, from[6]); |
| 1576 | p7 = vlib_get_buffer (vm, from[7]); |
| 1577 | |
| 1578 | /* Prefetch the buffer header and packet for the N+2 loop iteration */ |
| 1579 | vlib_prefetch_buffer_header (p4, LOAD); |
| 1580 | vlib_prefetch_buffer_header (p5, LOAD); |
| 1581 | vlib_prefetch_buffer_header (p6, LOAD); |
| 1582 | vlib_prefetch_buffer_header (p7, LOAD); |
| 1583 | |
| 1584 | CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1585 | CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1586 | CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1587 | CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1588 | } |
| 1589 | |
| 1590 | to_next[0] = bi0 = from[0]; |
| 1591 | to_next[1] = bi1 = from[1]; |
| 1592 | to_next[2] = bi2 = from[2]; |
| 1593 | to_next[3] = bi3 = from[3]; |
| 1594 | from += 4; |
| 1595 | to_next += 4; |
| 1596 | n_left_from -= 4; |
| 1597 | n_left_to_next -= 4; |
| 1598 | |
| 1599 | b0 = vlib_get_buffer (vm, bi0); |
| 1600 | b1 = vlib_get_buffer (vm, bi1); |
| 1601 | b2 = vlib_get_buffer (vm, bi2); |
| 1602 | b3 = vlib_get_buffer (vm, bi3); |
| 1603 | |
| 1604 | sl0 = |
| 1605 | pool_elt_at_index (sm->sid_lists, |
| 1606 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
| 1607 | sl1 = |
| 1608 | pool_elt_at_index (sm->sid_lists, |
| 1609 | vnet_buffer (b1)->ip.adj_index[VLIB_TX]); |
| 1610 | sl2 = |
| 1611 | pool_elt_at_index (sm->sid_lists, |
| 1612 | vnet_buffer (b2)->ip.adj_index[VLIB_TX]); |
| 1613 | sl3 = |
| 1614 | pool_elt_at_index (sm->sid_lists, |
| 1615 | vnet_buffer (b3)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 1616 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1617 | vec_len (sl0->rewrite)); |
| 1618 | ASSERT (b1->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1619 | vec_len (sl1->rewrite)); |
| 1620 | ASSERT (b2->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1621 | vec_len (sl2->rewrite)); |
| 1622 | ASSERT (b3->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1623 | vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1624 | |
| 1625 | ip0_encap = vlib_buffer_get_current (b0); |
| 1626 | ip1_encap = vlib_buffer_get_current (b1); |
| 1627 | ip2_encap = vlib_buffer_get_current (b2); |
| 1628 | ip3_encap = vlib_buffer_get_current (b3); |
| 1629 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1630 | clib_memcpy_fast (((u8 *) ip0_encap) - vec_len (sl0->rewrite), |
| 1631 | sl0->rewrite, vec_len (sl0->rewrite)); |
| 1632 | clib_memcpy_fast (((u8 *) ip1_encap) - vec_len (sl1->rewrite), |
| 1633 | sl1->rewrite, vec_len (sl1->rewrite)); |
| 1634 | clib_memcpy_fast (((u8 *) ip2_encap) - vec_len (sl2->rewrite), |
| 1635 | sl2->rewrite, vec_len (sl2->rewrite)); |
| 1636 | clib_memcpy_fast (((u8 *) ip3_encap) - vec_len (sl3->rewrite), |
| 1637 | sl3->rewrite, vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1638 | |
| 1639 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 1640 | vlib_buffer_advance (b1, -(word) vec_len (sl1->rewrite)); |
| 1641 | vlib_buffer_advance (b2, -(word) vec_len (sl2->rewrite)); |
| 1642 | vlib_buffer_advance (b3, -(word) vec_len (sl3->rewrite)); |
| 1643 | |
| 1644 | ip0 = vlib_buffer_get_current (b0); |
| 1645 | ip1 = vlib_buffer_get_current (b1); |
| 1646 | ip2 = vlib_buffer_get_current (b2); |
| 1647 | ip3 = vlib_buffer_get_current (b3); |
| 1648 | |
| 1649 | encaps_processing_v4 (node, b0, ip0, ip0_encap); |
| 1650 | encaps_processing_v4 (node, b1, ip1, ip1_encap); |
| 1651 | encaps_processing_v4 (node, b2, ip2, ip2_encap); |
| 1652 | encaps_processing_v4 (node, b3, ip3, ip3_encap); |
| 1653 | |
| 1654 | if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) |
| 1655 | { |
| 1656 | if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 1657 | { |
| 1658 | sr_policy_rewrite_trace_t *tr = |
| 1659 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1660 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 1661 | sizeof (tr->src.as_u8)); |
| 1662 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 1663 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1664 | } |
| 1665 | |
| 1666 | if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) |
| 1667 | { |
| 1668 | sr_policy_rewrite_trace_t *tr = |
| 1669 | vlib_add_trace (vm, node, b1, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1670 | clib_memcpy_fast (tr->src.as_u8, ip1->src_address.as_u8, |
| 1671 | sizeof (tr->src.as_u8)); |
| 1672 | clib_memcpy_fast (tr->dst.as_u8, ip1->dst_address.as_u8, |
| 1673 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1674 | } |
| 1675 | |
| 1676 | if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED)) |
| 1677 | { |
| 1678 | sr_policy_rewrite_trace_t *tr = |
| 1679 | vlib_add_trace (vm, node, b2, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1680 | clib_memcpy_fast (tr->src.as_u8, ip2->src_address.as_u8, |
| 1681 | sizeof (tr->src.as_u8)); |
| 1682 | clib_memcpy_fast (tr->dst.as_u8, ip2->dst_address.as_u8, |
| 1683 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1684 | } |
| 1685 | |
| 1686 | if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED)) |
| 1687 | { |
| 1688 | sr_policy_rewrite_trace_t *tr = |
| 1689 | vlib_add_trace (vm, node, b3, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1690 | clib_memcpy_fast (tr->src.as_u8, ip3->src_address.as_u8, |
| 1691 | sizeof (tr->src.as_u8)); |
| 1692 | clib_memcpy_fast (tr->dst.as_u8, ip3->dst_address.as_u8, |
| 1693 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1694 | } |
| 1695 | } |
| 1696 | |
| 1697 | encap_pkts += 4; |
| 1698 | vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, |
| 1699 | n_left_to_next, bi0, bi1, bi2, bi3, |
| 1700 | next0, next1, next2, next3); |
| 1701 | } |
| 1702 | |
| 1703 | /* Single loop for potentially the last three packets */ |
| 1704 | while (n_left_from > 0 && n_left_to_next > 0) |
| 1705 | { |
| 1706 | u32 bi0; |
| 1707 | vlib_buffer_t *b0; |
| 1708 | ip6_header_t *ip0 = 0; |
| 1709 | ip4_header_t *ip0_encap = 0; |
| 1710 | ip6_sr_sl_t *sl0; |
| 1711 | u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 1712 | |
| 1713 | bi0 = from[0]; |
| 1714 | to_next[0] = bi0; |
| 1715 | from += 1; |
| 1716 | to_next += 1; |
| 1717 | n_left_from -= 1; |
| 1718 | n_left_to_next -= 1; |
| 1719 | b0 = vlib_get_buffer (vm, bi0); |
| 1720 | |
| 1721 | sl0 = |
| 1722 | pool_elt_at_index (sm->sid_lists, |
| 1723 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 1724 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1725 | vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1726 | |
| 1727 | ip0_encap = vlib_buffer_get_current (b0); |
| 1728 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1729 | clib_memcpy_fast (((u8 *) ip0_encap) - vec_len (sl0->rewrite), |
| 1730 | sl0->rewrite, vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1731 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 1732 | |
| 1733 | ip0 = vlib_buffer_get_current (b0); |
| 1734 | |
| 1735 | encaps_processing_v4 (node, b0, ip0, ip0_encap); |
| 1736 | |
| 1737 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && |
| 1738 | PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 1739 | { |
| 1740 | sr_policy_rewrite_trace_t *tr = |
| 1741 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1742 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 1743 | sizeof (tr->src.as_u8)); |
| 1744 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 1745 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1746 | } |
| 1747 | |
| 1748 | encap_pkts++; |
| 1749 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 1750 | n_left_to_next, bi0, next0); |
| 1751 | } |
| 1752 | |
| 1753 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 1754 | } |
| 1755 | |
| 1756 | /* Update counters */ |
| 1757 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 1758 | SR_POLICY_REWRITE_ERROR_COUNTER_TOTAL, |
| 1759 | encap_pkts); |
| 1760 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 1761 | SR_POLICY_REWRITE_ERROR_COUNTER_BSID, |
| 1762 | bsid_pkts); |
| 1763 | |
| 1764 | return from_frame->n_vectors; |
| 1765 | } |
| 1766 | |
| 1767 | /* *INDENT-OFF* */ |
| 1768 | VLIB_REGISTER_NODE (sr_policy_rewrite_encaps_v4_node) = { |
| 1769 | .function = sr_policy_rewrite_encaps_v4, |
| 1770 | .name = "sr-pl-rewrite-encaps-v4", |
| 1771 | .vector_size = sizeof (u32), |
| 1772 | .format_trace = format_sr_policy_rewrite_trace, |
| 1773 | .type = VLIB_NODE_TYPE_INTERNAL, |
| 1774 | .n_errors = SR_POLICY_REWRITE_N_ERROR, |
| 1775 | .error_strings = sr_policy_rewrite_error_strings, |
| 1776 | .n_next_nodes = SR_POLICY_REWRITE_N_NEXT, |
| 1777 | .next_nodes = { |
| 1778 | #define _(s,n) [SR_POLICY_REWRITE_NEXT_##s] = n, |
| 1779 | foreach_sr_policy_rewrite_next |
| 1780 | #undef _ |
| 1781 | }, |
| 1782 | }; |
| 1783 | /* *INDENT-ON* */ |
| 1784 | |
| 1785 | always_inline u32 |
| 1786 | ip_flow_hash (void *data) |
| 1787 | { |
| 1788 | ip4_header_t *iph = (ip4_header_t *) data; |
| 1789 | |
| 1790 | if ((iph->ip_version_and_header_length & 0xF0) == 0x40) |
| 1791 | return ip4_compute_flow_hash (iph, IP_FLOW_HASH_DEFAULT); |
| 1792 | else |
| 1793 | return ip6_compute_flow_hash ((ip6_header_t *) iph, IP_FLOW_HASH_DEFAULT); |
| 1794 | } |
| 1795 | |
| 1796 | always_inline u64 |
| 1797 | mac_to_u64 (u8 * m) |
| 1798 | { |
| 1799 | return (*((u64 *) m) & 0xffffffffffff); |
| 1800 | } |
| 1801 | |
| 1802 | always_inline u32 |
| 1803 | l2_flow_hash (vlib_buffer_t * b0) |
| 1804 | { |
| 1805 | ethernet_header_t *eh; |
| 1806 | u64 a, b, c; |
| 1807 | uword is_ip, eh_size; |
| 1808 | u16 eh_type; |
| 1809 | |
| 1810 | eh = vlib_buffer_get_current (b0); |
| 1811 | eh_type = clib_net_to_host_u16 (eh->type); |
| 1812 | eh_size = ethernet_buffer_header_size (b0); |
| 1813 | |
| 1814 | is_ip = (eh_type == ETHERNET_TYPE_IP4 || eh_type == ETHERNET_TYPE_IP6); |
| 1815 | |
| 1816 | /* since we have 2 cache lines, use them */ |
| 1817 | if (is_ip) |
| 1818 | a = ip_flow_hash ((u8 *) vlib_buffer_get_current (b0) + eh_size); |
| 1819 | else |
| 1820 | a = eh->type; |
| 1821 | |
| 1822 | b = mac_to_u64 ((u8 *) eh->dst_address); |
| 1823 | c = mac_to_u64 ((u8 *) eh->src_address); |
| 1824 | hash_mix64 (a, b, c); |
| 1825 | |
| 1826 | return (u32) c; |
| 1827 | } |
| 1828 | |
| 1829 | /** |
| 1830 | * @brief Graph node for applying a SR policy into a L2 frame |
| 1831 | */ |
| 1832 | static uword |
| 1833 | sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1834 | vlib_frame_t * from_frame) |
| 1835 | { |
| 1836 | ip6_sr_main_t *sm = &sr_main; |
| 1837 | u32 n_left_from, next_index, *from, *to_next; |
| 1838 | |
| 1839 | from = vlib_frame_vector_args (from_frame); |
| 1840 | n_left_from = from_frame->n_vectors; |
| 1841 | |
| 1842 | next_index = node->cached_next_index; |
| 1843 | |
| 1844 | int encap_pkts = 0, bsid_pkts = 0; |
| 1845 | |
| 1846 | while (n_left_from > 0) |
| 1847 | { |
| 1848 | u32 n_left_to_next; |
| 1849 | |
| 1850 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 1851 | |
| 1852 | /* Quad - Loop */ |
| 1853 | while (n_left_from >= 8 && n_left_to_next >= 4) |
| 1854 | { |
| 1855 | u32 bi0, bi1, bi2, bi3; |
| 1856 | vlib_buffer_t *b0, *b1, *b2, *b3; |
| 1857 | u32 next0, next1, next2, next3; |
| 1858 | next0 = next1 = next2 = next3 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 1859 | ethernet_header_t *en0, *en1, *en2, *en3; |
| 1860 | ip6_header_t *ip0, *ip1, *ip2, *ip3; |
| 1861 | ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; |
| 1862 | ip6_sr_policy_t *sp0, *sp1, *sp2, *sp3; |
| 1863 | ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; |
| 1864 | |
| 1865 | /* Prefetch next iteration. */ |
| 1866 | { |
| 1867 | vlib_buffer_t *p4, *p5, *p6, *p7; |
| 1868 | |
| 1869 | p4 = vlib_get_buffer (vm, from[4]); |
| 1870 | p5 = vlib_get_buffer (vm, from[5]); |
| 1871 | p6 = vlib_get_buffer (vm, from[6]); |
| 1872 | p7 = vlib_get_buffer (vm, from[7]); |
| 1873 | |
| 1874 | /* Prefetch the buffer header and packet for the N+2 loop iteration */ |
| 1875 | vlib_prefetch_buffer_header (p4, LOAD); |
| 1876 | vlib_prefetch_buffer_header (p5, LOAD); |
| 1877 | vlib_prefetch_buffer_header (p6, LOAD); |
| 1878 | vlib_prefetch_buffer_header (p7, LOAD); |
| 1879 | |
| 1880 | CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1881 | CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1882 | CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1883 | CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 1884 | } |
| 1885 | |
| 1886 | to_next[0] = bi0 = from[0]; |
| 1887 | to_next[1] = bi1 = from[1]; |
| 1888 | to_next[2] = bi2 = from[2]; |
| 1889 | to_next[3] = bi3 = from[3]; |
| 1890 | from += 4; |
| 1891 | to_next += 4; |
| 1892 | n_left_from -= 4; |
| 1893 | n_left_to_next -= 4; |
| 1894 | |
| 1895 | b0 = vlib_get_buffer (vm, bi0); |
| 1896 | b1 = vlib_get_buffer (vm, bi1); |
| 1897 | b2 = vlib_get_buffer (vm, bi2); |
| 1898 | b3 = vlib_get_buffer (vm, bi3); |
| 1899 | |
| 1900 | sp0 = pool_elt_at_index (sm->sr_policies, |
| 1901 | sm->sw_iface_sr_policies[vnet_buffer |
| 1902 | (b0)->sw_if_index |
| 1903 | [VLIB_RX]]); |
| 1904 | |
| 1905 | sp1 = pool_elt_at_index (sm->sr_policies, |
| 1906 | sm->sw_iface_sr_policies[vnet_buffer |
| 1907 | (b1)->sw_if_index |
| 1908 | [VLIB_RX]]); |
| 1909 | |
| 1910 | sp2 = pool_elt_at_index (sm->sr_policies, |
| 1911 | sm->sw_iface_sr_policies[vnet_buffer |
| 1912 | (b2)->sw_if_index |
| 1913 | [VLIB_RX]]); |
| 1914 | |
| 1915 | sp3 = pool_elt_at_index (sm->sr_policies, |
| 1916 | sm->sw_iface_sr_policies[vnet_buffer |
| 1917 | (b3)->sw_if_index |
| 1918 | [VLIB_RX]]); |
| 1919 | |
| 1920 | if (vec_len (sp0->segments_lists) == 1) |
| 1921 | vnet_buffer (b0)->ip.adj_index[VLIB_TX] = sp0->segments_lists[0]; |
| 1922 | else |
| 1923 | { |
| 1924 | vnet_buffer (b0)->ip.flow_hash = l2_flow_hash (b0); |
| 1925 | vnet_buffer (b0)->ip.adj_index[VLIB_TX] = |
| 1926 | sp0->segments_lists[(vnet_buffer (b0)->ip.flow_hash & |
| 1927 | (vec_len (sp0->segments_lists) - 1))]; |
| 1928 | } |
| 1929 | |
| 1930 | if (vec_len (sp1->segments_lists) == 1) |
| 1931 | vnet_buffer (b1)->ip.adj_index[VLIB_TX] = sp1->segments_lists[1]; |
| 1932 | else |
| 1933 | { |
| 1934 | vnet_buffer (b1)->ip.flow_hash = l2_flow_hash (b1); |
| 1935 | vnet_buffer (b1)->ip.adj_index[VLIB_TX] = |
| 1936 | sp1->segments_lists[(vnet_buffer (b1)->ip.flow_hash & |
| 1937 | (vec_len (sp1->segments_lists) - 1))]; |
| 1938 | } |
| 1939 | |
| 1940 | if (vec_len (sp2->segments_lists) == 1) |
| 1941 | vnet_buffer (b2)->ip.adj_index[VLIB_TX] = sp2->segments_lists[2]; |
| 1942 | else |
| 1943 | { |
| 1944 | vnet_buffer (b2)->ip.flow_hash = l2_flow_hash (b2); |
| 1945 | vnet_buffer (b2)->ip.adj_index[VLIB_TX] = |
| 1946 | sp2->segments_lists[(vnet_buffer (b2)->ip.flow_hash & |
| 1947 | (vec_len (sp2->segments_lists) - 1))]; |
| 1948 | } |
| 1949 | |
| 1950 | if (vec_len (sp3->segments_lists) == 1) |
| 1951 | vnet_buffer (b3)->ip.adj_index[VLIB_TX] = sp3->segments_lists[3]; |
| 1952 | else |
| 1953 | { |
| 1954 | vnet_buffer (b3)->ip.flow_hash = l2_flow_hash (b3); |
| 1955 | vnet_buffer (b3)->ip.adj_index[VLIB_TX] = |
| 1956 | sp3->segments_lists[(vnet_buffer (b3)->ip.flow_hash & |
| 1957 | (vec_len (sp3->segments_lists) - 1))]; |
| 1958 | } |
| 1959 | |
| 1960 | sl0 = |
| 1961 | pool_elt_at_index (sm->sid_lists, |
| 1962 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
| 1963 | sl1 = |
| 1964 | pool_elt_at_index (sm->sid_lists, |
| 1965 | vnet_buffer (b1)->ip.adj_index[VLIB_TX]); |
| 1966 | sl2 = |
| 1967 | pool_elt_at_index (sm->sid_lists, |
| 1968 | vnet_buffer (b2)->ip.adj_index[VLIB_TX]); |
| 1969 | sl3 = |
| 1970 | pool_elt_at_index (sm->sid_lists, |
| 1971 | vnet_buffer (b3)->ip.adj_index[VLIB_TX]); |
| 1972 | |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 1973 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1974 | vec_len (sl0->rewrite)); |
| 1975 | ASSERT (b1->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1976 | vec_len (sl1->rewrite)); |
| 1977 | ASSERT (b2->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1978 | vec_len (sl2->rewrite)); |
| 1979 | ASSERT (b3->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 1980 | vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1981 | |
| 1982 | en0 = vlib_buffer_get_current (b0); |
| 1983 | en1 = vlib_buffer_get_current (b1); |
| 1984 | en2 = vlib_buffer_get_current (b2); |
| 1985 | en3 = vlib_buffer_get_current (b3); |
| 1986 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1987 | clib_memcpy_fast (((u8 *) en0) - vec_len (sl0->rewrite), |
| 1988 | sl0->rewrite, vec_len (sl0->rewrite)); |
| 1989 | clib_memcpy_fast (((u8 *) en1) - vec_len (sl1->rewrite), |
| 1990 | sl1->rewrite, vec_len (sl1->rewrite)); |
| 1991 | clib_memcpy_fast (((u8 *) en2) - vec_len (sl2->rewrite), |
| 1992 | sl2->rewrite, vec_len (sl2->rewrite)); |
| 1993 | clib_memcpy_fast (((u8 *) en3) - vec_len (sl3->rewrite), |
| 1994 | sl3->rewrite, vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 1995 | |
| 1996 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 1997 | vlib_buffer_advance (b1, -(word) vec_len (sl1->rewrite)); |
| 1998 | vlib_buffer_advance (b2, -(word) vec_len (sl2->rewrite)); |
| 1999 | vlib_buffer_advance (b3, -(word) vec_len (sl3->rewrite)); |
| 2000 | |
| 2001 | ip0 = vlib_buffer_get_current (b0); |
| 2002 | ip1 = vlib_buffer_get_current (b1); |
| 2003 | ip2 = vlib_buffer_get_current (b2); |
| 2004 | ip3 = vlib_buffer_get_current (b3); |
| 2005 | |
| 2006 | ip0->payload_length = |
| 2007 | clib_host_to_net_u16 (b0->current_length - sizeof (ip6_header_t)); |
| 2008 | ip1->payload_length = |
| 2009 | clib_host_to_net_u16 (b1->current_length - sizeof (ip6_header_t)); |
| 2010 | ip2->payload_length = |
| 2011 | clib_host_to_net_u16 (b2->current_length - sizeof (ip6_header_t)); |
| 2012 | ip3->payload_length = |
| 2013 | clib_host_to_net_u16 (b3->current_length - sizeof (ip6_header_t)); |
| 2014 | |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2015 | if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE) |
| 2016 | { |
| 2017 | sr0 = (void *) (ip0 + 1); |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2018 | sr0->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2019 | } |
| 2020 | else |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2021 | ip0->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2022 | |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2023 | if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE) |
| 2024 | { |
| 2025 | sr1 = (void *) (ip1 + 1); |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2026 | sr1->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2027 | } |
| 2028 | else |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2029 | ip1->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2030 | |
| 2031 | if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE) |
| 2032 | { |
| 2033 | sr2 = (void *) (ip2 + 1); |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2034 | sr2->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2035 | } |
| 2036 | else |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2037 | ip2->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2038 | |
| 2039 | if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE) |
| 2040 | { |
| 2041 | sr3 = (void *) (ip3 + 1); |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2042 | sr3->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2043 | } |
| 2044 | else |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2045 | ip3->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2046 | |
| 2047 | /* Which Traffic class and flow label do I set ? */ |
| 2048 | //ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(0|((6&0xF)<<28)|((ip0_encap->tos&0xFF)<<20)); |
| 2049 | |
| 2050 | if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) |
| 2051 | { |
| 2052 | if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 2053 | { |
| 2054 | sr_policy_rewrite_trace_t *tr = |
| 2055 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2056 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 2057 | sizeof (tr->src.as_u8)); |
| 2058 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 2059 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2060 | } |
| 2061 | |
| 2062 | if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) |
| 2063 | { |
| 2064 | sr_policy_rewrite_trace_t *tr = |
| 2065 | vlib_add_trace (vm, node, b1, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2066 | clib_memcpy_fast (tr->src.as_u8, ip1->src_address.as_u8, |
| 2067 | sizeof (tr->src.as_u8)); |
| 2068 | clib_memcpy_fast (tr->dst.as_u8, ip1->dst_address.as_u8, |
| 2069 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2070 | } |
| 2071 | |
| 2072 | if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED)) |
| 2073 | { |
| 2074 | sr_policy_rewrite_trace_t *tr = |
| 2075 | vlib_add_trace (vm, node, b2, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2076 | clib_memcpy_fast (tr->src.as_u8, ip2->src_address.as_u8, |
| 2077 | sizeof (tr->src.as_u8)); |
| 2078 | clib_memcpy_fast (tr->dst.as_u8, ip2->dst_address.as_u8, |
| 2079 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2080 | } |
| 2081 | |
| 2082 | if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED)) |
| 2083 | { |
| 2084 | sr_policy_rewrite_trace_t *tr = |
| 2085 | vlib_add_trace (vm, node, b3, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2086 | clib_memcpy_fast (tr->src.as_u8, ip3->src_address.as_u8, |
| 2087 | sizeof (tr->src.as_u8)); |
| 2088 | clib_memcpy_fast (tr->dst.as_u8, ip3->dst_address.as_u8, |
| 2089 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2090 | } |
| 2091 | } |
| 2092 | |
| 2093 | encap_pkts += 4; |
| 2094 | vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, |
| 2095 | n_left_to_next, bi0, bi1, bi2, bi3, |
| 2096 | next0, next1, next2, next3); |
| 2097 | } |
| 2098 | |
| 2099 | /* Single loop for potentially the last three packets */ |
| 2100 | while (n_left_from > 0 && n_left_to_next > 0) |
| 2101 | { |
| 2102 | u32 bi0; |
| 2103 | vlib_buffer_t *b0; |
| 2104 | ip6_header_t *ip0 = 0; |
| 2105 | ip6_sr_header_t *sr0; |
| 2106 | ethernet_header_t *en0; |
| 2107 | ip6_sr_policy_t *sp0; |
| 2108 | ip6_sr_sl_t *sl0; |
| 2109 | u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 2110 | |
| 2111 | bi0 = from[0]; |
| 2112 | to_next[0] = bi0; |
| 2113 | from += 1; |
| 2114 | to_next += 1; |
| 2115 | n_left_from -= 1; |
| 2116 | n_left_to_next -= 1; |
| 2117 | b0 = vlib_get_buffer (vm, bi0); |
| 2118 | |
| 2119 | /* Find the SR policy */ |
| 2120 | sp0 = pool_elt_at_index (sm->sr_policies, |
| 2121 | sm->sw_iface_sr_policies[vnet_buffer |
| 2122 | (b0)->sw_if_index |
| 2123 | [VLIB_RX]]); |
| 2124 | |
| 2125 | /* In case there is more than one SL, LB among them */ |
| 2126 | if (vec_len (sp0->segments_lists) == 1) |
| 2127 | vnet_buffer (b0)->ip.adj_index[VLIB_TX] = sp0->segments_lists[0]; |
| 2128 | else |
| 2129 | { |
| 2130 | vnet_buffer (b0)->ip.flow_hash = l2_flow_hash (b0); |
| 2131 | vnet_buffer (b0)->ip.adj_index[VLIB_TX] = |
| 2132 | sp0->segments_lists[(vnet_buffer (b0)->ip.flow_hash & |
| 2133 | (vec_len (sp0->segments_lists) - 1))]; |
| 2134 | } |
| 2135 | sl0 = |
| 2136 | pool_elt_at_index (sm->sid_lists, |
| 2137 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 2138 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2139 | vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2140 | |
| 2141 | en0 = vlib_buffer_get_current (b0); |
| 2142 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2143 | clib_memcpy_fast (((u8 *) en0) - vec_len (sl0->rewrite), |
| 2144 | sl0->rewrite, vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2145 | |
| 2146 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 2147 | |
| 2148 | ip0 = vlib_buffer_get_current (b0); |
| 2149 | |
| 2150 | ip0->payload_length = |
| 2151 | clib_host_to_net_u16 (b0->current_length - sizeof (ip6_header_t)); |
| 2152 | |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2153 | if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE) |
| 2154 | { |
| 2155 | sr0 = (void *) (ip0 + 1); |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2156 | sr0->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | d327c87 | 2018-01-08 14:25:55 +0100 | [diff] [blame] | 2157 | } |
| 2158 | else |
pcamaril | 30e7671 | 2020-02-04 08:36:51 +0100 | [diff] [blame] | 2159 | ip0->protocol = IP_PROTOCOL_IP6_ETHERNET; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2160 | |
| 2161 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && |
| 2162 | PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 2163 | { |
| 2164 | sr_policy_rewrite_trace_t *tr = |
| 2165 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2166 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 2167 | sizeof (tr->src.as_u8)); |
| 2168 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 2169 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2170 | } |
| 2171 | |
| 2172 | encap_pkts++; |
| 2173 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 2174 | n_left_to_next, bi0, next0); |
| 2175 | } |
| 2176 | |
| 2177 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 2178 | } |
| 2179 | |
| 2180 | /* Update counters */ |
| 2181 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 2182 | SR_POLICY_REWRITE_ERROR_COUNTER_TOTAL, |
| 2183 | encap_pkts); |
| 2184 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 2185 | SR_POLICY_REWRITE_ERROR_COUNTER_BSID, |
| 2186 | bsid_pkts); |
| 2187 | |
| 2188 | return from_frame->n_vectors; |
| 2189 | } |
| 2190 | |
| 2191 | /* *INDENT-OFF* */ |
| 2192 | VLIB_REGISTER_NODE (sr_policy_rewrite_encaps_l2_node) = { |
| 2193 | .function = sr_policy_rewrite_encaps_l2, |
| 2194 | .name = "sr-pl-rewrite-encaps-l2", |
| 2195 | .vector_size = sizeof (u32), |
| 2196 | .format_trace = format_sr_policy_rewrite_trace, |
| 2197 | .type = VLIB_NODE_TYPE_INTERNAL, |
| 2198 | .n_errors = SR_POLICY_REWRITE_N_ERROR, |
| 2199 | .error_strings = sr_policy_rewrite_error_strings, |
| 2200 | .n_next_nodes = SR_POLICY_REWRITE_N_NEXT, |
| 2201 | .next_nodes = { |
| 2202 | #define _(s,n) [SR_POLICY_REWRITE_NEXT_##s] = n, |
| 2203 | foreach_sr_policy_rewrite_next |
| 2204 | #undef _ |
| 2205 | }, |
| 2206 | }; |
| 2207 | /* *INDENT-ON* */ |
| 2208 | |
| 2209 | /** |
| 2210 | * @brief Graph node for applying a SR policy into a packet. SRH insertion. |
| 2211 | */ |
| 2212 | static uword |
| 2213 | sr_policy_rewrite_insert (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2214 | vlib_frame_t * from_frame) |
| 2215 | { |
| 2216 | ip6_sr_main_t *sm = &sr_main; |
| 2217 | u32 n_left_from, next_index, *from, *to_next; |
| 2218 | |
| 2219 | from = vlib_frame_vector_args (from_frame); |
| 2220 | n_left_from = from_frame->n_vectors; |
| 2221 | |
| 2222 | next_index = node->cached_next_index; |
| 2223 | |
| 2224 | int insert_pkts = 0, bsid_pkts = 0; |
| 2225 | |
| 2226 | while (n_left_from > 0) |
| 2227 | { |
| 2228 | u32 n_left_to_next; |
| 2229 | |
| 2230 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 2231 | |
| 2232 | /* Quad - Loop */ |
| 2233 | while (n_left_from >= 8 && n_left_to_next >= 4) |
| 2234 | { |
| 2235 | u32 bi0, bi1, bi2, bi3; |
| 2236 | vlib_buffer_t *b0, *b1, *b2, *b3; |
| 2237 | u32 next0, next1, next2, next3; |
| 2238 | next0 = next1 = next2 = next3 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 2239 | ip6_header_t *ip0, *ip1, *ip2, *ip3; |
| 2240 | ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; |
| 2241 | ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; |
| 2242 | u16 new_l0, new_l1, new_l2, new_l3; |
| 2243 | |
| 2244 | /* Prefetch next iteration. */ |
| 2245 | { |
| 2246 | vlib_buffer_t *p4, *p5, *p6, *p7; |
| 2247 | |
| 2248 | p4 = vlib_get_buffer (vm, from[4]); |
| 2249 | p5 = vlib_get_buffer (vm, from[5]); |
| 2250 | p6 = vlib_get_buffer (vm, from[6]); |
| 2251 | p7 = vlib_get_buffer (vm, from[7]); |
| 2252 | |
| 2253 | /* Prefetch the buffer header and packet for the N+2 loop iteration */ |
| 2254 | vlib_prefetch_buffer_header (p4, LOAD); |
| 2255 | vlib_prefetch_buffer_header (p5, LOAD); |
| 2256 | vlib_prefetch_buffer_header (p6, LOAD); |
| 2257 | vlib_prefetch_buffer_header (p7, LOAD); |
| 2258 | |
| 2259 | CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2260 | CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2261 | CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2262 | CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2263 | } |
| 2264 | |
| 2265 | to_next[0] = bi0 = from[0]; |
| 2266 | to_next[1] = bi1 = from[1]; |
| 2267 | to_next[2] = bi2 = from[2]; |
| 2268 | to_next[3] = bi3 = from[3]; |
| 2269 | from += 4; |
| 2270 | to_next += 4; |
| 2271 | n_left_from -= 4; |
| 2272 | n_left_to_next -= 4; |
| 2273 | |
| 2274 | b0 = vlib_get_buffer (vm, bi0); |
| 2275 | b1 = vlib_get_buffer (vm, bi1); |
| 2276 | b2 = vlib_get_buffer (vm, bi2); |
| 2277 | b3 = vlib_get_buffer (vm, bi3); |
| 2278 | |
| 2279 | sl0 = |
| 2280 | pool_elt_at_index (sm->sid_lists, |
| 2281 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
| 2282 | sl1 = |
| 2283 | pool_elt_at_index (sm->sid_lists, |
| 2284 | vnet_buffer (b1)->ip.adj_index[VLIB_TX]); |
| 2285 | sl2 = |
| 2286 | pool_elt_at_index (sm->sid_lists, |
| 2287 | vnet_buffer (b2)->ip.adj_index[VLIB_TX]); |
| 2288 | sl3 = |
| 2289 | pool_elt_at_index (sm->sid_lists, |
| 2290 | vnet_buffer (b3)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 2291 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2292 | vec_len (sl0->rewrite)); |
| 2293 | ASSERT (b1->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2294 | vec_len (sl1->rewrite)); |
| 2295 | ASSERT (b2->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2296 | vec_len (sl2->rewrite)); |
| 2297 | ASSERT (b3->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2298 | vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2299 | |
| 2300 | ip0 = vlib_buffer_get_current (b0); |
| 2301 | ip1 = vlib_buffer_get_current (b1); |
| 2302 | ip2 = vlib_buffer_get_current (b2); |
| 2303 | ip3 = vlib_buffer_get_current (b3); |
| 2304 | |
| 2305 | if (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2306 | sr0 = |
| 2307 | (ip6_sr_header_t *) (((void *) (ip0 + 1)) + |
| 2308 | ip6_ext_header_len (ip0 + 1)); |
| 2309 | else |
| 2310 | sr0 = (ip6_sr_header_t *) (ip0 + 1); |
| 2311 | |
| 2312 | if (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2313 | sr1 = |
| 2314 | (ip6_sr_header_t *) (((void *) (ip1 + 1)) + |
| 2315 | ip6_ext_header_len (ip1 + 1)); |
| 2316 | else |
| 2317 | sr1 = (ip6_sr_header_t *) (ip1 + 1); |
| 2318 | |
| 2319 | if (ip2->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2320 | sr2 = |
| 2321 | (ip6_sr_header_t *) (((void *) (ip2 + 1)) + |
| 2322 | ip6_ext_header_len (ip2 + 1)); |
| 2323 | else |
| 2324 | sr2 = (ip6_sr_header_t *) (ip2 + 1); |
| 2325 | |
| 2326 | if (ip3->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2327 | sr3 = |
| 2328 | (ip6_sr_header_t *) (((void *) (ip3 + 1)) + |
| 2329 | ip6_ext_header_len (ip3 + 1)); |
| 2330 | else |
| 2331 | sr3 = (ip6_sr_header_t *) (ip3 + 1); |
| 2332 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2333 | clib_memcpy_fast ((u8 *) ip0 - vec_len (sl0->rewrite), (u8 *) ip0, |
| 2334 | (void *) sr0 - (void *) ip0); |
| 2335 | clib_memcpy_fast ((u8 *) ip1 - vec_len (sl1->rewrite), (u8 *) ip1, |
| 2336 | (void *) sr1 - (void *) ip1); |
| 2337 | clib_memcpy_fast ((u8 *) ip2 - vec_len (sl2->rewrite), (u8 *) ip2, |
| 2338 | (void *) sr2 - (void *) ip2); |
| 2339 | clib_memcpy_fast ((u8 *) ip3 - vec_len (sl3->rewrite), (u8 *) ip3, |
| 2340 | (void *) sr3 - (void *) ip3); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2341 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2342 | clib_memcpy_fast (((u8 *) sr0 - vec_len (sl0->rewrite)), |
| 2343 | sl0->rewrite, vec_len (sl0->rewrite)); |
| 2344 | clib_memcpy_fast (((u8 *) sr1 - vec_len (sl1->rewrite)), |
| 2345 | sl1->rewrite, vec_len (sl1->rewrite)); |
| 2346 | clib_memcpy_fast (((u8 *) sr2 - vec_len (sl2->rewrite)), |
| 2347 | sl2->rewrite, vec_len (sl2->rewrite)); |
| 2348 | clib_memcpy_fast (((u8 *) sr3 - vec_len (sl3->rewrite)), |
| 2349 | sl3->rewrite, vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2350 | |
| 2351 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 2352 | vlib_buffer_advance (b1, -(word) vec_len (sl1->rewrite)); |
| 2353 | vlib_buffer_advance (b2, -(word) vec_len (sl2->rewrite)); |
| 2354 | vlib_buffer_advance (b3, -(word) vec_len (sl3->rewrite)); |
| 2355 | |
| 2356 | ip0 = ((void *) ip0) - vec_len (sl0->rewrite); |
| 2357 | ip1 = ((void *) ip1) - vec_len (sl1->rewrite); |
| 2358 | ip2 = ((void *) ip2) - vec_len (sl2->rewrite); |
| 2359 | ip3 = ((void *) ip3) - vec_len (sl3->rewrite); |
| 2360 | |
| 2361 | ip0->hop_limit -= 1; |
| 2362 | ip1->hop_limit -= 1; |
| 2363 | ip2->hop_limit -= 1; |
| 2364 | ip3->hop_limit -= 1; |
| 2365 | |
| 2366 | new_l0 = |
| 2367 | clib_net_to_host_u16 (ip0->payload_length) + |
| 2368 | vec_len (sl0->rewrite); |
| 2369 | new_l1 = |
| 2370 | clib_net_to_host_u16 (ip1->payload_length) + |
| 2371 | vec_len (sl1->rewrite); |
| 2372 | new_l2 = |
| 2373 | clib_net_to_host_u16 (ip2->payload_length) + |
| 2374 | vec_len (sl2->rewrite); |
| 2375 | new_l3 = |
| 2376 | clib_net_to_host_u16 (ip3->payload_length) + |
| 2377 | vec_len (sl3->rewrite); |
| 2378 | |
| 2379 | ip0->payload_length = clib_host_to_net_u16 (new_l0); |
| 2380 | ip1->payload_length = clib_host_to_net_u16 (new_l1); |
| 2381 | ip2->payload_length = clib_host_to_net_u16 (new_l2); |
| 2382 | ip3->payload_length = clib_host_to_net_u16 (new_l3); |
| 2383 | |
| 2384 | sr0 = ((void *) sr0) - vec_len (sl0->rewrite); |
| 2385 | sr1 = ((void *) sr1) - vec_len (sl1->rewrite); |
| 2386 | sr2 = ((void *) sr2) - vec_len (sl2->rewrite); |
| 2387 | sr3 = ((void *) sr3) - vec_len (sl3->rewrite); |
| 2388 | |
| 2389 | sr0->segments->as_u64[0] = ip0->dst_address.as_u64[0]; |
| 2390 | sr0->segments->as_u64[1] = ip0->dst_address.as_u64[1]; |
| 2391 | sr1->segments->as_u64[0] = ip1->dst_address.as_u64[0]; |
| 2392 | sr1->segments->as_u64[1] = ip1->dst_address.as_u64[1]; |
| 2393 | sr2->segments->as_u64[0] = ip2->dst_address.as_u64[0]; |
| 2394 | sr2->segments->as_u64[1] = ip2->dst_address.as_u64[1]; |
| 2395 | sr3->segments->as_u64[0] = ip3->dst_address.as_u64[0]; |
| 2396 | sr3->segments->as_u64[1] = ip3->dst_address.as_u64[1]; |
| 2397 | |
| 2398 | ip0->dst_address.as_u64[0] = |
| 2399 | (sr0->segments + sr0->segments_left)->as_u64[0]; |
| 2400 | ip0->dst_address.as_u64[1] = |
| 2401 | (sr0->segments + sr0->segments_left)->as_u64[1]; |
| 2402 | ip1->dst_address.as_u64[0] = |
| 2403 | (sr1->segments + sr1->segments_left)->as_u64[0]; |
| 2404 | ip1->dst_address.as_u64[1] = |
| 2405 | (sr1->segments + sr1->segments_left)->as_u64[1]; |
| 2406 | ip2->dst_address.as_u64[0] = |
| 2407 | (sr2->segments + sr2->segments_left)->as_u64[0]; |
| 2408 | ip2->dst_address.as_u64[1] = |
| 2409 | (sr2->segments + sr2->segments_left)->as_u64[1]; |
| 2410 | ip3->dst_address.as_u64[0] = |
| 2411 | (sr3->segments + sr3->segments_left)->as_u64[0]; |
| 2412 | ip3->dst_address.as_u64[1] = |
| 2413 | (sr3->segments + sr3->segments_left)->as_u64[1]; |
| 2414 | |
| 2415 | ip6_ext_header_t *ip_ext; |
| 2416 | if (ip0 + 1 == (void *) sr0) |
| 2417 | { |
| 2418 | sr0->protocol = ip0->protocol; |
| 2419 | ip0->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2420 | } |
| 2421 | else |
| 2422 | { |
| 2423 | ip_ext = (void *) (ip0 + 1); |
| 2424 | sr0->protocol = ip_ext->next_hdr; |
| 2425 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2426 | } |
| 2427 | |
| 2428 | if (ip1 + 1 == (void *) sr1) |
| 2429 | { |
| 2430 | sr1->protocol = ip1->protocol; |
| 2431 | ip1->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2432 | } |
| 2433 | else |
| 2434 | { |
| 2435 | ip_ext = (void *) (ip2 + 1); |
| 2436 | sr2->protocol = ip_ext->next_hdr; |
| 2437 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2438 | } |
| 2439 | |
| 2440 | if (ip2 + 1 == (void *) sr2) |
| 2441 | { |
| 2442 | sr2->protocol = ip2->protocol; |
| 2443 | ip2->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2444 | } |
| 2445 | else |
| 2446 | { |
| 2447 | ip_ext = (void *) (ip2 + 1); |
| 2448 | sr2->protocol = ip_ext->next_hdr; |
| 2449 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2450 | } |
| 2451 | |
| 2452 | if (ip3 + 1 == (void *) sr3) |
| 2453 | { |
| 2454 | sr3->protocol = ip3->protocol; |
| 2455 | ip3->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2456 | } |
| 2457 | else |
| 2458 | { |
| 2459 | ip_ext = (void *) (ip3 + 1); |
| 2460 | sr3->protocol = ip_ext->next_hdr; |
| 2461 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2462 | } |
| 2463 | |
| 2464 | insert_pkts += 4; |
| 2465 | |
| 2466 | if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) |
| 2467 | { |
| 2468 | if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 2469 | { |
| 2470 | sr_policy_rewrite_trace_t *tr = |
| 2471 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2472 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 2473 | sizeof (tr->src.as_u8)); |
| 2474 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 2475 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2476 | } |
| 2477 | |
| 2478 | if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) |
| 2479 | { |
| 2480 | sr_policy_rewrite_trace_t *tr = |
| 2481 | vlib_add_trace (vm, node, b1, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2482 | clib_memcpy_fast (tr->src.as_u8, ip1->src_address.as_u8, |
| 2483 | sizeof (tr->src.as_u8)); |
| 2484 | clib_memcpy_fast (tr->dst.as_u8, ip1->dst_address.as_u8, |
| 2485 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2486 | } |
| 2487 | |
| 2488 | if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED)) |
| 2489 | { |
| 2490 | sr_policy_rewrite_trace_t *tr = |
| 2491 | vlib_add_trace (vm, node, b2, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2492 | clib_memcpy_fast (tr->src.as_u8, ip2->src_address.as_u8, |
| 2493 | sizeof (tr->src.as_u8)); |
| 2494 | clib_memcpy_fast (tr->dst.as_u8, ip2->dst_address.as_u8, |
| 2495 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2496 | } |
| 2497 | |
| 2498 | if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED)) |
| 2499 | { |
| 2500 | sr_policy_rewrite_trace_t *tr = |
| 2501 | vlib_add_trace (vm, node, b3, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2502 | clib_memcpy_fast (tr->src.as_u8, ip3->src_address.as_u8, |
| 2503 | sizeof (tr->src.as_u8)); |
| 2504 | clib_memcpy_fast (tr->dst.as_u8, ip3->dst_address.as_u8, |
| 2505 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2506 | } |
| 2507 | } |
| 2508 | |
| 2509 | vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, |
| 2510 | n_left_to_next, bi0, bi1, bi2, bi3, |
| 2511 | next0, next1, next2, next3); |
| 2512 | } |
| 2513 | |
| 2514 | /* Single loop for potentially the last three packets */ |
| 2515 | while (n_left_from > 0 && n_left_to_next > 0) |
| 2516 | { |
| 2517 | u32 bi0; |
| 2518 | vlib_buffer_t *b0; |
| 2519 | ip6_header_t *ip0 = 0; |
| 2520 | ip6_sr_header_t *sr0 = 0; |
| 2521 | ip6_sr_sl_t *sl0; |
| 2522 | u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 2523 | u16 new_l0 = 0; |
| 2524 | |
| 2525 | bi0 = from[0]; |
| 2526 | to_next[0] = bi0; |
| 2527 | from += 1; |
| 2528 | to_next += 1; |
| 2529 | n_left_from -= 1; |
| 2530 | n_left_to_next -= 1; |
| 2531 | |
| 2532 | b0 = vlib_get_buffer (vm, bi0); |
| 2533 | sl0 = |
| 2534 | pool_elt_at_index (sm->sid_lists, |
| 2535 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 2536 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2537 | vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2538 | |
| 2539 | ip0 = vlib_buffer_get_current (b0); |
| 2540 | |
| 2541 | if (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2542 | sr0 = |
| 2543 | (ip6_sr_header_t *) (((void *) (ip0 + 1)) + |
| 2544 | ip6_ext_header_len (ip0 + 1)); |
| 2545 | else |
| 2546 | sr0 = (ip6_sr_header_t *) (ip0 + 1); |
| 2547 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2548 | clib_memcpy_fast ((u8 *) ip0 - vec_len (sl0->rewrite), (u8 *) ip0, |
| 2549 | (void *) sr0 - (void *) ip0); |
| 2550 | clib_memcpy_fast (((u8 *) sr0 - vec_len (sl0->rewrite)), |
| 2551 | sl0->rewrite, vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2552 | |
| 2553 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 2554 | |
| 2555 | ip0 = ((void *) ip0) - vec_len (sl0->rewrite); |
| 2556 | ip0->hop_limit -= 1; |
| 2557 | new_l0 = |
| 2558 | clib_net_to_host_u16 (ip0->payload_length) + |
| 2559 | vec_len (sl0->rewrite); |
| 2560 | ip0->payload_length = clib_host_to_net_u16 (new_l0); |
| 2561 | |
| 2562 | sr0 = ((void *) sr0) - vec_len (sl0->rewrite); |
| 2563 | sr0->segments->as_u64[0] = ip0->dst_address.as_u64[0]; |
| 2564 | sr0->segments->as_u64[1] = ip0->dst_address.as_u64[1]; |
| 2565 | |
| 2566 | ip0->dst_address.as_u64[0] = |
| 2567 | (sr0->segments + sr0->segments_left)->as_u64[0]; |
| 2568 | ip0->dst_address.as_u64[1] = |
| 2569 | (sr0->segments + sr0->segments_left)->as_u64[1]; |
| 2570 | |
| 2571 | if (ip0 + 1 == (void *) sr0) |
| 2572 | { |
| 2573 | sr0->protocol = ip0->protocol; |
| 2574 | ip0->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2575 | } |
| 2576 | else |
| 2577 | { |
| 2578 | ip6_ext_header_t *ip_ext = (void *) (ip0 + 1); |
| 2579 | sr0->protocol = ip_ext->next_hdr; |
| 2580 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2581 | } |
| 2582 | |
| 2583 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && |
| 2584 | PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 2585 | { |
| 2586 | sr_policy_rewrite_trace_t *tr = |
| 2587 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2588 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 2589 | sizeof (tr->src.as_u8)); |
| 2590 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 2591 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2592 | } |
| 2593 | |
| 2594 | insert_pkts++; |
| 2595 | |
| 2596 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 2597 | n_left_to_next, bi0, next0); |
| 2598 | } |
| 2599 | |
| 2600 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 2601 | } |
| 2602 | |
| 2603 | /* Update counters */ |
| 2604 | vlib_node_increment_counter (vm, sr_policy_rewrite_insert_node.index, |
| 2605 | SR_POLICY_REWRITE_ERROR_COUNTER_TOTAL, |
| 2606 | insert_pkts); |
| 2607 | vlib_node_increment_counter (vm, sr_policy_rewrite_insert_node.index, |
| 2608 | SR_POLICY_REWRITE_ERROR_COUNTER_BSID, |
| 2609 | bsid_pkts); |
| 2610 | return from_frame->n_vectors; |
| 2611 | } |
| 2612 | |
| 2613 | /* *INDENT-OFF* */ |
| 2614 | VLIB_REGISTER_NODE (sr_policy_rewrite_insert_node) = { |
| 2615 | .function = sr_policy_rewrite_insert, |
| 2616 | .name = "sr-pl-rewrite-insert", |
| 2617 | .vector_size = sizeof (u32), |
| 2618 | .format_trace = format_sr_policy_rewrite_trace, |
| 2619 | .type = VLIB_NODE_TYPE_INTERNAL, |
| 2620 | .n_errors = SR_POLICY_REWRITE_N_ERROR, |
| 2621 | .error_strings = sr_policy_rewrite_error_strings, |
| 2622 | .n_next_nodes = SR_POLICY_REWRITE_N_NEXT, |
| 2623 | .next_nodes = { |
| 2624 | #define _(s,n) [SR_POLICY_REWRITE_NEXT_##s] = n, |
| 2625 | foreach_sr_policy_rewrite_next |
| 2626 | #undef _ |
| 2627 | }, |
| 2628 | }; |
| 2629 | /* *INDENT-ON* */ |
| 2630 | |
| 2631 | /** |
| 2632 | * @brief Graph node for applying a SR policy into a packet. BSID - SRH insertion. |
| 2633 | */ |
| 2634 | static uword |
| 2635 | sr_policy_rewrite_b_insert (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2636 | vlib_frame_t * from_frame) |
| 2637 | { |
| 2638 | ip6_sr_main_t *sm = &sr_main; |
| 2639 | u32 n_left_from, next_index, *from, *to_next; |
| 2640 | |
| 2641 | from = vlib_frame_vector_args (from_frame); |
| 2642 | n_left_from = from_frame->n_vectors; |
| 2643 | |
| 2644 | next_index = node->cached_next_index; |
| 2645 | |
| 2646 | int insert_pkts = 0, bsid_pkts = 0; |
| 2647 | |
| 2648 | while (n_left_from > 0) |
| 2649 | { |
| 2650 | u32 n_left_to_next; |
| 2651 | |
| 2652 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 2653 | |
| 2654 | /* Quad - Loop */ |
| 2655 | while (n_left_from >= 8 && n_left_to_next >= 4) |
| 2656 | { |
| 2657 | u32 bi0, bi1, bi2, bi3; |
| 2658 | vlib_buffer_t *b0, *b1, *b2, *b3; |
| 2659 | u32 next0, next1, next2, next3; |
| 2660 | next0 = next1 = next2 = next3 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 2661 | ip6_header_t *ip0, *ip1, *ip2, *ip3; |
| 2662 | ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; |
| 2663 | ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; |
| 2664 | u16 new_l0, new_l1, new_l2, new_l3; |
| 2665 | |
| 2666 | /* Prefetch next iteration. */ |
| 2667 | { |
| 2668 | vlib_buffer_t *p4, *p5, *p6, *p7; |
| 2669 | |
| 2670 | p4 = vlib_get_buffer (vm, from[4]); |
| 2671 | p5 = vlib_get_buffer (vm, from[5]); |
| 2672 | p6 = vlib_get_buffer (vm, from[6]); |
| 2673 | p7 = vlib_get_buffer (vm, from[7]); |
| 2674 | |
| 2675 | /* Prefetch the buffer header and packet for the N+2 loop iteration */ |
| 2676 | vlib_prefetch_buffer_header (p4, LOAD); |
| 2677 | vlib_prefetch_buffer_header (p5, LOAD); |
| 2678 | vlib_prefetch_buffer_header (p6, LOAD); |
| 2679 | vlib_prefetch_buffer_header (p7, LOAD); |
| 2680 | |
| 2681 | CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2682 | CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2683 | CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2684 | CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 2685 | } |
| 2686 | |
| 2687 | to_next[0] = bi0 = from[0]; |
| 2688 | to_next[1] = bi1 = from[1]; |
| 2689 | to_next[2] = bi2 = from[2]; |
| 2690 | to_next[3] = bi3 = from[3]; |
| 2691 | from += 4; |
| 2692 | to_next += 4; |
| 2693 | n_left_from -= 4; |
| 2694 | n_left_to_next -= 4; |
| 2695 | |
| 2696 | b0 = vlib_get_buffer (vm, bi0); |
| 2697 | b1 = vlib_get_buffer (vm, bi1); |
| 2698 | b2 = vlib_get_buffer (vm, bi2); |
| 2699 | b3 = vlib_get_buffer (vm, bi3); |
| 2700 | |
| 2701 | sl0 = |
| 2702 | pool_elt_at_index (sm->sid_lists, |
| 2703 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
| 2704 | sl1 = |
| 2705 | pool_elt_at_index (sm->sid_lists, |
| 2706 | vnet_buffer (b1)->ip.adj_index[VLIB_TX]); |
| 2707 | sl2 = |
| 2708 | pool_elt_at_index (sm->sid_lists, |
| 2709 | vnet_buffer (b2)->ip.adj_index[VLIB_TX]); |
| 2710 | sl3 = |
| 2711 | pool_elt_at_index (sm->sid_lists, |
| 2712 | vnet_buffer (b3)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 2713 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2714 | vec_len (sl0->rewrite_bsid)); |
| 2715 | ASSERT (b1->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2716 | vec_len (sl1->rewrite_bsid)); |
| 2717 | ASSERT (b2->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2718 | vec_len (sl2->rewrite_bsid)); |
| 2719 | ASSERT (b3->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2720 | vec_len (sl3->rewrite_bsid)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2721 | |
| 2722 | ip0 = vlib_buffer_get_current (b0); |
| 2723 | ip1 = vlib_buffer_get_current (b1); |
| 2724 | ip2 = vlib_buffer_get_current (b2); |
| 2725 | ip3 = vlib_buffer_get_current (b3); |
| 2726 | |
| 2727 | if (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2728 | sr0 = |
| 2729 | (ip6_sr_header_t *) (((void *) (ip0 + 1)) + |
| 2730 | ip6_ext_header_len (ip0 + 1)); |
| 2731 | else |
| 2732 | sr0 = (ip6_sr_header_t *) (ip0 + 1); |
| 2733 | |
| 2734 | if (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2735 | sr1 = |
| 2736 | (ip6_sr_header_t *) (((void *) (ip1 + 1)) + |
| 2737 | ip6_ext_header_len (ip1 + 1)); |
| 2738 | else |
| 2739 | sr1 = (ip6_sr_header_t *) (ip1 + 1); |
| 2740 | |
| 2741 | if (ip2->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2742 | sr2 = |
| 2743 | (ip6_sr_header_t *) (((void *) (ip2 + 1)) + |
| 2744 | ip6_ext_header_len (ip2 + 1)); |
| 2745 | else |
| 2746 | sr2 = (ip6_sr_header_t *) (ip2 + 1); |
| 2747 | |
| 2748 | if (ip3->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2749 | sr3 = |
| 2750 | (ip6_sr_header_t *) (((void *) (ip3 + 1)) + |
| 2751 | ip6_ext_header_len (ip3 + 1)); |
| 2752 | else |
| 2753 | sr3 = (ip6_sr_header_t *) (ip3 + 1); |
| 2754 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2755 | clib_memcpy_fast ((u8 *) ip0 - vec_len (sl0->rewrite_bsid), |
| 2756 | (u8 *) ip0, (void *) sr0 - (void *) ip0); |
| 2757 | clib_memcpy_fast ((u8 *) ip1 - vec_len (sl1->rewrite_bsid), |
| 2758 | (u8 *) ip1, (void *) sr1 - (void *) ip1); |
| 2759 | clib_memcpy_fast ((u8 *) ip2 - vec_len (sl2->rewrite_bsid), |
| 2760 | (u8 *) ip2, (void *) sr2 - (void *) ip2); |
| 2761 | clib_memcpy_fast ((u8 *) ip3 - vec_len (sl3->rewrite_bsid), |
| 2762 | (u8 *) ip3, (void *) sr3 - (void *) ip3); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2763 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2764 | clib_memcpy_fast (((u8 *) sr0 - vec_len (sl0->rewrite_bsid)), |
| 2765 | sl0->rewrite_bsid, vec_len (sl0->rewrite_bsid)); |
| 2766 | clib_memcpy_fast (((u8 *) sr1 - vec_len (sl1->rewrite_bsid)), |
| 2767 | sl1->rewrite_bsid, vec_len (sl1->rewrite_bsid)); |
| 2768 | clib_memcpy_fast (((u8 *) sr2 - vec_len (sl2->rewrite_bsid)), |
| 2769 | sl2->rewrite_bsid, vec_len (sl2->rewrite_bsid)); |
| 2770 | clib_memcpy_fast (((u8 *) sr3 - vec_len (sl3->rewrite_bsid)), |
| 2771 | sl3->rewrite_bsid, vec_len (sl3->rewrite_bsid)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2772 | |
| 2773 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite_bsid)); |
| 2774 | vlib_buffer_advance (b1, -(word) vec_len (sl1->rewrite_bsid)); |
| 2775 | vlib_buffer_advance (b2, -(word) vec_len (sl2->rewrite_bsid)); |
| 2776 | vlib_buffer_advance (b3, -(word) vec_len (sl3->rewrite_bsid)); |
| 2777 | |
| 2778 | ip0 = ((void *) ip0) - vec_len (sl0->rewrite_bsid); |
| 2779 | ip1 = ((void *) ip1) - vec_len (sl1->rewrite_bsid); |
| 2780 | ip2 = ((void *) ip2) - vec_len (sl2->rewrite_bsid); |
| 2781 | ip3 = ((void *) ip3) - vec_len (sl3->rewrite_bsid); |
| 2782 | |
| 2783 | ip0->hop_limit -= 1; |
| 2784 | ip1->hop_limit -= 1; |
| 2785 | ip2->hop_limit -= 1; |
| 2786 | ip3->hop_limit -= 1; |
| 2787 | |
| 2788 | new_l0 = |
| 2789 | clib_net_to_host_u16 (ip0->payload_length) + |
| 2790 | vec_len (sl0->rewrite_bsid); |
| 2791 | new_l1 = |
| 2792 | clib_net_to_host_u16 (ip1->payload_length) + |
| 2793 | vec_len (sl1->rewrite_bsid); |
| 2794 | new_l2 = |
| 2795 | clib_net_to_host_u16 (ip2->payload_length) + |
| 2796 | vec_len (sl2->rewrite_bsid); |
| 2797 | new_l3 = |
| 2798 | clib_net_to_host_u16 (ip3->payload_length) + |
| 2799 | vec_len (sl3->rewrite_bsid); |
| 2800 | |
| 2801 | ip0->payload_length = clib_host_to_net_u16 (new_l0); |
| 2802 | ip1->payload_length = clib_host_to_net_u16 (new_l1); |
| 2803 | ip2->payload_length = clib_host_to_net_u16 (new_l2); |
| 2804 | ip3->payload_length = clib_host_to_net_u16 (new_l3); |
| 2805 | |
| 2806 | sr0 = ((void *) sr0) - vec_len (sl0->rewrite_bsid); |
| 2807 | sr1 = ((void *) sr1) - vec_len (sl1->rewrite_bsid); |
| 2808 | sr2 = ((void *) sr2) - vec_len (sl2->rewrite_bsid); |
| 2809 | sr3 = ((void *) sr3) - vec_len (sl3->rewrite_bsid); |
| 2810 | |
| 2811 | ip0->dst_address.as_u64[0] = |
| 2812 | (sr0->segments + sr0->segments_left)->as_u64[0]; |
| 2813 | ip0->dst_address.as_u64[1] = |
| 2814 | (sr0->segments + sr0->segments_left)->as_u64[1]; |
| 2815 | ip1->dst_address.as_u64[0] = |
| 2816 | (sr1->segments + sr1->segments_left)->as_u64[0]; |
| 2817 | ip1->dst_address.as_u64[1] = |
| 2818 | (sr1->segments + sr1->segments_left)->as_u64[1]; |
| 2819 | ip2->dst_address.as_u64[0] = |
| 2820 | (sr2->segments + sr2->segments_left)->as_u64[0]; |
| 2821 | ip2->dst_address.as_u64[1] = |
| 2822 | (sr2->segments + sr2->segments_left)->as_u64[1]; |
| 2823 | ip3->dst_address.as_u64[0] = |
| 2824 | (sr3->segments + sr3->segments_left)->as_u64[0]; |
| 2825 | ip3->dst_address.as_u64[1] = |
| 2826 | (sr3->segments + sr3->segments_left)->as_u64[1]; |
| 2827 | |
| 2828 | ip6_ext_header_t *ip_ext; |
| 2829 | if (ip0 + 1 == (void *) sr0) |
| 2830 | { |
| 2831 | sr0->protocol = ip0->protocol; |
| 2832 | ip0->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2833 | } |
| 2834 | else |
| 2835 | { |
| 2836 | ip_ext = (void *) (ip0 + 1); |
| 2837 | sr0->protocol = ip_ext->next_hdr; |
| 2838 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2839 | } |
| 2840 | |
| 2841 | if (ip1 + 1 == (void *) sr1) |
| 2842 | { |
| 2843 | sr1->protocol = ip1->protocol; |
| 2844 | ip1->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2845 | } |
| 2846 | else |
| 2847 | { |
| 2848 | ip_ext = (void *) (ip2 + 1); |
| 2849 | sr2->protocol = ip_ext->next_hdr; |
| 2850 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2851 | } |
| 2852 | |
| 2853 | if (ip2 + 1 == (void *) sr2) |
| 2854 | { |
| 2855 | sr2->protocol = ip2->protocol; |
| 2856 | ip2->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2857 | } |
| 2858 | else |
| 2859 | { |
| 2860 | ip_ext = (void *) (ip2 + 1); |
| 2861 | sr2->protocol = ip_ext->next_hdr; |
| 2862 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2863 | } |
| 2864 | |
| 2865 | if (ip3 + 1 == (void *) sr3) |
| 2866 | { |
| 2867 | sr3->protocol = ip3->protocol; |
| 2868 | ip3->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2869 | } |
| 2870 | else |
| 2871 | { |
| 2872 | ip_ext = (void *) (ip3 + 1); |
| 2873 | sr3->protocol = ip_ext->next_hdr; |
| 2874 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2875 | } |
| 2876 | |
| 2877 | insert_pkts += 4; |
| 2878 | |
| 2879 | if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) |
| 2880 | { |
| 2881 | if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 2882 | { |
| 2883 | sr_policy_rewrite_trace_t *tr = |
| 2884 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2885 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 2886 | sizeof (tr->src.as_u8)); |
| 2887 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 2888 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2889 | } |
| 2890 | |
| 2891 | if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) |
| 2892 | { |
| 2893 | sr_policy_rewrite_trace_t *tr = |
| 2894 | vlib_add_trace (vm, node, b1, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2895 | clib_memcpy_fast (tr->src.as_u8, ip1->src_address.as_u8, |
| 2896 | sizeof (tr->src.as_u8)); |
| 2897 | clib_memcpy_fast (tr->dst.as_u8, ip1->dst_address.as_u8, |
| 2898 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2899 | } |
| 2900 | |
| 2901 | if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED)) |
| 2902 | { |
| 2903 | sr_policy_rewrite_trace_t *tr = |
| 2904 | vlib_add_trace (vm, node, b2, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2905 | clib_memcpy_fast (tr->src.as_u8, ip2->src_address.as_u8, |
| 2906 | sizeof (tr->src.as_u8)); |
| 2907 | clib_memcpy_fast (tr->dst.as_u8, ip2->dst_address.as_u8, |
| 2908 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2909 | } |
| 2910 | |
| 2911 | if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED)) |
| 2912 | { |
| 2913 | sr_policy_rewrite_trace_t *tr = |
| 2914 | vlib_add_trace (vm, node, b3, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2915 | clib_memcpy_fast (tr->src.as_u8, ip3->src_address.as_u8, |
| 2916 | sizeof (tr->src.as_u8)); |
| 2917 | clib_memcpy_fast (tr->dst.as_u8, ip3->dst_address.as_u8, |
| 2918 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2919 | } |
| 2920 | } |
| 2921 | |
| 2922 | vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, |
| 2923 | n_left_to_next, bi0, bi1, bi2, bi3, |
| 2924 | next0, next1, next2, next3); |
| 2925 | } |
| 2926 | |
| 2927 | /* Single loop for potentially the last three packets */ |
| 2928 | while (n_left_from > 0 && n_left_to_next > 0) |
| 2929 | { |
| 2930 | u32 bi0; |
| 2931 | vlib_buffer_t *b0; |
| 2932 | ip6_header_t *ip0 = 0; |
| 2933 | ip6_sr_header_t *sr0 = 0; |
| 2934 | ip6_sr_sl_t *sl0; |
| 2935 | u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 2936 | u16 new_l0 = 0; |
| 2937 | |
| 2938 | bi0 = from[0]; |
| 2939 | to_next[0] = bi0; |
| 2940 | from += 1; |
| 2941 | to_next += 1; |
| 2942 | n_left_from -= 1; |
| 2943 | n_left_to_next -= 1; |
| 2944 | |
| 2945 | b0 = vlib_get_buffer (vm, bi0); |
| 2946 | sl0 = |
| 2947 | pool_elt_at_index (sm->sid_lists, |
| 2948 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 2949 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 2950 | vec_len (sl0->rewrite_bsid)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2951 | |
| 2952 | ip0 = vlib_buffer_get_current (b0); |
| 2953 | |
| 2954 | if (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 2955 | sr0 = |
| 2956 | (ip6_sr_header_t *) (((void *) (ip0 + 1)) + |
| 2957 | ip6_ext_header_len (ip0 + 1)); |
| 2958 | else |
| 2959 | sr0 = (ip6_sr_header_t *) (ip0 + 1); |
| 2960 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2961 | clib_memcpy_fast ((u8 *) ip0 - vec_len (sl0->rewrite_bsid), |
| 2962 | (u8 *) ip0, (void *) sr0 - (void *) ip0); |
| 2963 | clib_memcpy_fast (((u8 *) sr0 - vec_len (sl0->rewrite_bsid)), |
| 2964 | sl0->rewrite_bsid, vec_len (sl0->rewrite_bsid)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 2965 | |
| 2966 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite_bsid)); |
| 2967 | |
| 2968 | ip0 = ((void *) ip0) - vec_len (sl0->rewrite_bsid); |
| 2969 | ip0->hop_limit -= 1; |
| 2970 | new_l0 = |
| 2971 | clib_net_to_host_u16 (ip0->payload_length) + |
| 2972 | vec_len (sl0->rewrite_bsid); |
| 2973 | ip0->payload_length = clib_host_to_net_u16 (new_l0); |
| 2974 | |
| 2975 | sr0 = ((void *) sr0) - vec_len (sl0->rewrite_bsid); |
| 2976 | |
| 2977 | ip0->dst_address.as_u64[0] = |
| 2978 | (sr0->segments + sr0->segments_left)->as_u64[0]; |
| 2979 | ip0->dst_address.as_u64[1] = |
| 2980 | (sr0->segments + sr0->segments_left)->as_u64[1]; |
| 2981 | |
| 2982 | if (ip0 + 1 == (void *) sr0) |
| 2983 | { |
| 2984 | sr0->protocol = ip0->protocol; |
| 2985 | ip0->protocol = IP_PROTOCOL_IPV6_ROUTE; |
| 2986 | } |
| 2987 | else |
| 2988 | { |
| 2989 | ip6_ext_header_t *ip_ext = (void *) (ip0 + 1); |
| 2990 | sr0->protocol = ip_ext->next_hdr; |
| 2991 | ip_ext->next_hdr = IP_PROTOCOL_IPV6_ROUTE; |
| 2992 | } |
| 2993 | |
| 2994 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && |
| 2995 | PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 2996 | { |
| 2997 | sr_policy_rewrite_trace_t *tr = |
| 2998 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 2999 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 3000 | sizeof (tr->src.as_u8)); |
| 3001 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 3002 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3003 | } |
| 3004 | |
| 3005 | insert_pkts++; |
| 3006 | |
| 3007 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 3008 | n_left_to_next, bi0, next0); |
| 3009 | } |
| 3010 | |
| 3011 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 3012 | } |
| 3013 | |
| 3014 | /* Update counters */ |
| 3015 | vlib_node_increment_counter (vm, sr_policy_rewrite_insert_node.index, |
| 3016 | SR_POLICY_REWRITE_ERROR_COUNTER_TOTAL, |
| 3017 | insert_pkts); |
| 3018 | vlib_node_increment_counter (vm, sr_policy_rewrite_insert_node.index, |
| 3019 | SR_POLICY_REWRITE_ERROR_COUNTER_BSID, |
| 3020 | bsid_pkts); |
| 3021 | return from_frame->n_vectors; |
| 3022 | } |
| 3023 | |
| 3024 | /* *INDENT-OFF* */ |
| 3025 | VLIB_REGISTER_NODE (sr_policy_rewrite_b_insert_node) = { |
| 3026 | .function = sr_policy_rewrite_b_insert, |
| 3027 | .name = "sr-pl-rewrite-b-insert", |
| 3028 | .vector_size = sizeof (u32), |
| 3029 | .format_trace = format_sr_policy_rewrite_trace, |
| 3030 | .type = VLIB_NODE_TYPE_INTERNAL, |
| 3031 | .n_errors = SR_POLICY_REWRITE_N_ERROR, |
| 3032 | .error_strings = sr_policy_rewrite_error_strings, |
| 3033 | .n_next_nodes = SR_POLICY_REWRITE_N_NEXT, |
| 3034 | .next_nodes = { |
| 3035 | #define _(s,n) [SR_POLICY_REWRITE_NEXT_##s] = n, |
| 3036 | foreach_sr_policy_rewrite_next |
| 3037 | #undef _ |
| 3038 | }, |
| 3039 | }; |
| 3040 | /* *INDENT-ON* */ |
| 3041 | |
| 3042 | /** |
| 3043 | * @brief Function BSID encapsulation |
| 3044 | */ |
| 3045 | static_always_inline void |
| 3046 | end_bsid_encaps_srh_processing (vlib_node_runtime_t * node, |
| 3047 | vlib_buffer_t * b0, |
| 3048 | ip6_header_t * ip0, |
| 3049 | ip6_sr_header_t * sr0, u32 * next0) |
| 3050 | { |
| 3051 | ip6_address_t *new_dst0; |
| 3052 | |
| 3053 | if (PREDICT_FALSE (!sr0)) |
| 3054 | goto error_bsid_encaps; |
| 3055 | |
| 3056 | if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR)) |
| 3057 | { |
| 3058 | if (PREDICT_TRUE (sr0->segments_left != 0)) |
| 3059 | { |
| 3060 | sr0->segments_left -= 1; |
| 3061 | new_dst0 = (ip6_address_t *) (sr0->segments); |
| 3062 | new_dst0 += sr0->segments_left; |
| 3063 | ip0->dst_address.as_u64[0] = new_dst0->as_u64[0]; |
| 3064 | ip0->dst_address.as_u64[1] = new_dst0->as_u64[1]; |
| 3065 | return; |
| 3066 | } |
| 3067 | } |
| 3068 | |
| 3069 | error_bsid_encaps: |
| 3070 | *next0 = SR_POLICY_REWRITE_NEXT_ERROR; |
| 3071 | b0->error = node->errors[SR_POLICY_REWRITE_ERROR_BSID_ZERO]; |
| 3072 | } |
| 3073 | |
| 3074 | /** |
| 3075 | * @brief Graph node for applying a SR policy BSID - Encapsulation |
| 3076 | */ |
| 3077 | static uword |
| 3078 | sr_policy_rewrite_b_encaps (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 3079 | vlib_frame_t * from_frame) |
| 3080 | { |
| 3081 | ip6_sr_main_t *sm = &sr_main; |
| 3082 | u32 n_left_from, next_index, *from, *to_next; |
| 3083 | |
| 3084 | from = vlib_frame_vector_args (from_frame); |
| 3085 | n_left_from = from_frame->n_vectors; |
| 3086 | |
| 3087 | next_index = node->cached_next_index; |
| 3088 | |
| 3089 | int encap_pkts = 0, bsid_pkts = 0; |
| 3090 | |
| 3091 | while (n_left_from > 0) |
| 3092 | { |
| 3093 | u32 n_left_to_next; |
| 3094 | |
| 3095 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 3096 | |
| 3097 | /* Quad - Loop */ |
| 3098 | while (n_left_from >= 8 && n_left_to_next >= 4) |
| 3099 | { |
| 3100 | u32 bi0, bi1, bi2, bi3; |
| 3101 | vlib_buffer_t *b0, *b1, *b2, *b3; |
| 3102 | u32 next0, next1, next2, next3; |
| 3103 | next0 = next1 = next2 = next3 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 3104 | ip6_header_t *ip0, *ip1, *ip2, *ip3; |
| 3105 | ip6_header_t *ip0_encap, *ip1_encap, *ip2_encap, *ip3_encap; |
| 3106 | ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3107 | ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; |
| 3108 | |
| 3109 | /* Prefetch next iteration. */ |
| 3110 | { |
| 3111 | vlib_buffer_t *p4, *p5, *p6, *p7; |
| 3112 | |
| 3113 | p4 = vlib_get_buffer (vm, from[4]); |
| 3114 | p5 = vlib_get_buffer (vm, from[5]); |
| 3115 | p6 = vlib_get_buffer (vm, from[6]); |
| 3116 | p7 = vlib_get_buffer (vm, from[7]); |
| 3117 | |
| 3118 | /* Prefetch the buffer header and packet for the N+2 loop iteration */ |
| 3119 | vlib_prefetch_buffer_header (p4, LOAD); |
| 3120 | vlib_prefetch_buffer_header (p5, LOAD); |
| 3121 | vlib_prefetch_buffer_header (p6, LOAD); |
| 3122 | vlib_prefetch_buffer_header (p7, LOAD); |
| 3123 | |
| 3124 | CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 3125 | CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 3126 | CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 3127 | CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); |
| 3128 | } |
| 3129 | |
| 3130 | to_next[0] = bi0 = from[0]; |
| 3131 | to_next[1] = bi1 = from[1]; |
| 3132 | to_next[2] = bi2 = from[2]; |
| 3133 | to_next[3] = bi3 = from[3]; |
| 3134 | from += 4; |
| 3135 | to_next += 4; |
| 3136 | n_left_from -= 4; |
| 3137 | n_left_to_next -= 4; |
| 3138 | |
| 3139 | b0 = vlib_get_buffer (vm, bi0); |
| 3140 | b1 = vlib_get_buffer (vm, bi1); |
| 3141 | b2 = vlib_get_buffer (vm, bi2); |
| 3142 | b3 = vlib_get_buffer (vm, bi3); |
| 3143 | |
| 3144 | sl0 = |
| 3145 | pool_elt_at_index (sm->sid_lists, |
| 3146 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
| 3147 | sl1 = |
| 3148 | pool_elt_at_index (sm->sid_lists, |
| 3149 | vnet_buffer (b1)->ip.adj_index[VLIB_TX]); |
| 3150 | sl2 = |
| 3151 | pool_elt_at_index (sm->sid_lists, |
| 3152 | vnet_buffer (b2)->ip.adj_index[VLIB_TX]); |
| 3153 | sl3 = |
| 3154 | pool_elt_at_index (sm->sid_lists, |
| 3155 | vnet_buffer (b3)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 3156 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 3157 | vec_len (sl0->rewrite)); |
| 3158 | ASSERT (b1->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 3159 | vec_len (sl1->rewrite)); |
| 3160 | ASSERT (b2->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 3161 | vec_len (sl2->rewrite)); |
| 3162 | ASSERT (b3->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 3163 | vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3164 | |
| 3165 | ip0_encap = vlib_buffer_get_current (b0); |
| 3166 | ip1_encap = vlib_buffer_get_current (b1); |
| 3167 | ip2_encap = vlib_buffer_get_current (b2); |
| 3168 | ip3_encap = vlib_buffer_get_current (b3); |
| 3169 | |
Klement Sekera | 769145c | 2019-03-06 11:59:57 +0100 | [diff] [blame] | 3170 | sr0 = |
| 3171 | ip6_ext_header_find (vm, b0, ip0_encap, IP_PROTOCOL_IPV6_ROUTE, |
| 3172 | NULL); |
| 3173 | sr1 = |
| 3174 | ip6_ext_header_find (vm, b1, ip1_encap, IP_PROTOCOL_IPV6_ROUTE, |
| 3175 | NULL); |
| 3176 | sr2 = |
| 3177 | ip6_ext_header_find (vm, b2, ip2_encap, IP_PROTOCOL_IPV6_ROUTE, |
| 3178 | NULL); |
| 3179 | sr3 = |
| 3180 | ip6_ext_header_find (vm, b3, ip3_encap, IP_PROTOCOL_IPV6_ROUTE, |
| 3181 | NULL); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3182 | |
| 3183 | end_bsid_encaps_srh_processing (node, b0, ip0_encap, sr0, &next0); |
| 3184 | end_bsid_encaps_srh_processing (node, b1, ip1_encap, sr1, &next1); |
| 3185 | end_bsid_encaps_srh_processing (node, b2, ip2_encap, sr2, &next2); |
| 3186 | end_bsid_encaps_srh_processing (node, b3, ip3_encap, sr3, &next3); |
| 3187 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3188 | clib_memcpy_fast (((u8 *) ip0_encap) - vec_len (sl0->rewrite), |
| 3189 | sl0->rewrite, vec_len (sl0->rewrite)); |
| 3190 | clib_memcpy_fast (((u8 *) ip1_encap) - vec_len (sl1->rewrite), |
| 3191 | sl1->rewrite, vec_len (sl1->rewrite)); |
| 3192 | clib_memcpy_fast (((u8 *) ip2_encap) - vec_len (sl2->rewrite), |
| 3193 | sl2->rewrite, vec_len (sl2->rewrite)); |
| 3194 | clib_memcpy_fast (((u8 *) ip3_encap) - vec_len (sl3->rewrite), |
| 3195 | sl3->rewrite, vec_len (sl3->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3196 | |
| 3197 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 3198 | vlib_buffer_advance (b1, -(word) vec_len (sl1->rewrite)); |
| 3199 | vlib_buffer_advance (b2, -(word) vec_len (sl2->rewrite)); |
| 3200 | vlib_buffer_advance (b3, -(word) vec_len (sl3->rewrite)); |
| 3201 | |
| 3202 | ip0 = vlib_buffer_get_current (b0); |
| 3203 | ip1 = vlib_buffer_get_current (b1); |
| 3204 | ip2 = vlib_buffer_get_current (b2); |
| 3205 | ip3 = vlib_buffer_get_current (b3); |
| 3206 | |
| 3207 | encaps_processing_v6 (node, b0, ip0, ip0_encap); |
| 3208 | encaps_processing_v6 (node, b1, ip1, ip1_encap); |
| 3209 | encaps_processing_v6 (node, b2, ip2, ip2_encap); |
| 3210 | encaps_processing_v6 (node, b3, ip3, ip3_encap); |
| 3211 | |
| 3212 | if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) |
| 3213 | { |
| 3214 | if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 3215 | { |
| 3216 | sr_policy_rewrite_trace_t *tr = |
| 3217 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3218 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 3219 | sizeof (tr->src.as_u8)); |
| 3220 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 3221 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3222 | } |
| 3223 | |
| 3224 | if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) |
| 3225 | { |
| 3226 | sr_policy_rewrite_trace_t *tr = |
| 3227 | vlib_add_trace (vm, node, b1, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3228 | clib_memcpy_fast (tr->src.as_u8, ip1->src_address.as_u8, |
| 3229 | sizeof (tr->src.as_u8)); |
| 3230 | clib_memcpy_fast (tr->dst.as_u8, ip1->dst_address.as_u8, |
| 3231 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3232 | } |
| 3233 | |
| 3234 | if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED)) |
| 3235 | { |
| 3236 | sr_policy_rewrite_trace_t *tr = |
| 3237 | vlib_add_trace (vm, node, b2, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3238 | clib_memcpy_fast (tr->src.as_u8, ip2->src_address.as_u8, |
| 3239 | sizeof (tr->src.as_u8)); |
| 3240 | clib_memcpy_fast (tr->dst.as_u8, ip2->dst_address.as_u8, |
| 3241 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3242 | } |
| 3243 | |
| 3244 | if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED)) |
| 3245 | { |
| 3246 | sr_policy_rewrite_trace_t *tr = |
| 3247 | vlib_add_trace (vm, node, b3, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3248 | clib_memcpy_fast (tr->src.as_u8, ip3->src_address.as_u8, |
| 3249 | sizeof (tr->src.as_u8)); |
| 3250 | clib_memcpy_fast (tr->dst.as_u8, ip3->dst_address.as_u8, |
| 3251 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3252 | } |
| 3253 | } |
| 3254 | |
| 3255 | encap_pkts += 4; |
| 3256 | vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, |
| 3257 | n_left_to_next, bi0, bi1, bi2, bi3, |
| 3258 | next0, next1, next2, next3); |
| 3259 | } |
| 3260 | |
| 3261 | /* Single loop for potentially the last three packets */ |
| 3262 | while (n_left_from > 0 && n_left_to_next > 0) |
| 3263 | { |
| 3264 | u32 bi0; |
| 3265 | vlib_buffer_t *b0; |
| 3266 | ip6_header_t *ip0 = 0, *ip0_encap = 0; |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3267 | ip6_sr_header_t *sr0; |
| 3268 | ip6_sr_sl_t *sl0; |
| 3269 | u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; |
| 3270 | |
| 3271 | bi0 = from[0]; |
| 3272 | to_next[0] = bi0; |
| 3273 | from += 1; |
| 3274 | to_next += 1; |
| 3275 | n_left_from -= 1; |
| 3276 | n_left_to_next -= 1; |
| 3277 | b0 = vlib_get_buffer (vm, bi0); |
| 3278 | |
| 3279 | sl0 = |
| 3280 | pool_elt_at_index (sm->sid_lists, |
| 3281 | vnet_buffer (b0)->ip.adj_index[VLIB_TX]); |
shwethab | e146f13 | 2017-03-09 16:58:26 +0000 | [diff] [blame] | 3282 | ASSERT (b0->current_data + VLIB_BUFFER_PRE_DATA_SIZE >= |
| 3283 | vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3284 | |
| 3285 | ip0_encap = vlib_buffer_get_current (b0); |
Klement Sekera | 769145c | 2019-03-06 11:59:57 +0100 | [diff] [blame] | 3286 | sr0 = |
| 3287 | ip6_ext_header_find (vm, b0, ip0_encap, IP_PROTOCOL_IPV6_ROUTE, |
| 3288 | NULL); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3289 | end_bsid_encaps_srh_processing (node, b0, ip0_encap, sr0, &next0); |
| 3290 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3291 | clib_memcpy_fast (((u8 *) ip0_encap) - vec_len (sl0->rewrite), |
| 3292 | sl0->rewrite, vec_len (sl0->rewrite)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3293 | vlib_buffer_advance (b0, -(word) vec_len (sl0->rewrite)); |
| 3294 | |
| 3295 | ip0 = vlib_buffer_get_current (b0); |
| 3296 | |
| 3297 | encaps_processing_v6 (node, b0, ip0, ip0_encap); |
| 3298 | |
| 3299 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && |
| 3300 | PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) |
| 3301 | { |
| 3302 | sr_policy_rewrite_trace_t *tr = |
| 3303 | vlib_add_trace (vm, node, b0, sizeof (*tr)); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 3304 | clib_memcpy_fast (tr->src.as_u8, ip0->src_address.as_u8, |
| 3305 | sizeof (tr->src.as_u8)); |
| 3306 | clib_memcpy_fast (tr->dst.as_u8, ip0->dst_address.as_u8, |
| 3307 | sizeof (tr->dst.as_u8)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3308 | } |
| 3309 | |
| 3310 | encap_pkts++; |
| 3311 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 3312 | n_left_to_next, bi0, next0); |
| 3313 | } |
| 3314 | |
| 3315 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 3316 | } |
| 3317 | |
| 3318 | /* Update counters */ |
| 3319 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 3320 | SR_POLICY_REWRITE_ERROR_COUNTER_TOTAL, |
| 3321 | encap_pkts); |
| 3322 | vlib_node_increment_counter (vm, sr_policy_rewrite_encaps_node.index, |
| 3323 | SR_POLICY_REWRITE_ERROR_COUNTER_BSID, |
| 3324 | bsid_pkts); |
| 3325 | |
| 3326 | return from_frame->n_vectors; |
| 3327 | } |
| 3328 | |
| 3329 | /* *INDENT-OFF* */ |
| 3330 | VLIB_REGISTER_NODE (sr_policy_rewrite_b_encaps_node) = { |
| 3331 | .function = sr_policy_rewrite_b_encaps, |
| 3332 | .name = "sr-pl-rewrite-b-encaps", |
| 3333 | .vector_size = sizeof (u32), |
| 3334 | .format_trace = format_sr_policy_rewrite_trace, |
| 3335 | .type = VLIB_NODE_TYPE_INTERNAL, |
| 3336 | .n_errors = SR_POLICY_REWRITE_N_ERROR, |
| 3337 | .error_strings = sr_policy_rewrite_error_strings, |
| 3338 | .n_next_nodes = SR_POLICY_REWRITE_N_NEXT, |
| 3339 | .next_nodes = { |
| 3340 | #define _(s,n) [SR_POLICY_REWRITE_NEXT_##s] = n, |
| 3341 | foreach_sr_policy_rewrite_next |
| 3342 | #undef _ |
| 3343 | }, |
| 3344 | }; |
| 3345 | /* *INDENT-ON* */ |
| 3346 | |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 3347 | /*************************** SR Policy plugins ******************************/ |
| 3348 | /** |
| 3349 | * @brief SR Policy plugin registry |
| 3350 | */ |
| 3351 | int |
| 3352 | sr_policy_register_function (vlib_main_t * vm, u8 * fn_name, |
| 3353 | u8 * keyword_str, u8 * def_str, |
| 3354 | u8 * params_str, u8 prefix_length, |
| 3355 | dpo_type_t * dpo, |
| 3356 | format_function_t * ls_format, |
| 3357 | unformat_function_t * ls_unformat, |
| 3358 | sr_p_plugin_callback_t * creation_fn, |
| 3359 | sr_p_plugin_callback_t * removal_fn) |
| 3360 | { |
| 3361 | ip6_sr_main_t *sm = &sr_main; |
| 3362 | uword *p; |
| 3363 | |
| 3364 | sr_policy_fn_registration_t *plugin; |
| 3365 | |
| 3366 | /* Did this function exist? If so update it */ |
| 3367 | p = hash_get_mem (sm->policy_plugin_functions_by_key, fn_name); |
| 3368 | if (p) |
| 3369 | { |
| 3370 | plugin = pool_elt_at_index (sm->policy_plugin_functions, p[0]); |
| 3371 | } |
| 3372 | /* Else create a new one and set hash key */ |
| 3373 | else |
| 3374 | { |
| 3375 | pool_get (sm->policy_plugin_functions, plugin); |
| 3376 | hash_set_mem (sm->policy_plugin_functions_by_key, fn_name, |
| 3377 | plugin - sm->policy_plugin_functions); |
| 3378 | } |
| 3379 | |
| 3380 | clib_memset (plugin, 0, sizeof (*plugin)); |
| 3381 | |
| 3382 | plugin->sr_policy_function_number = (plugin - sm->policy_plugin_functions); |
| 3383 | plugin->sr_policy_function_number += SR_BEHAVIOR_LAST; |
| 3384 | plugin->prefix_length = prefix_length; |
| 3385 | plugin->ls_format = ls_format; |
| 3386 | plugin->ls_unformat = ls_unformat; |
| 3387 | plugin->creation = creation_fn; |
| 3388 | plugin->removal = removal_fn; |
| 3389 | clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t)); |
| 3390 | plugin->function_name = format (0, "%s%c", fn_name, 0); |
| 3391 | plugin->keyword_str = format (0, "%s%c", keyword_str, 0); |
| 3392 | plugin->def_str = format (0, "%s%c", def_str, 0); |
| 3393 | plugin->params_str = format (0, "%s%c", params_str, 0); |
| 3394 | |
| 3395 | return plugin->sr_policy_function_number; |
| 3396 | } |
| 3397 | |
| 3398 | /** |
| 3399 | * @brief CLI function to 'show' all available SR LocalSID behaviors |
| 3400 | */ |
| 3401 | static clib_error_t * |
| 3402 | show_sr_policy_behaviors_command_fn (vlib_main_t * vm, |
| 3403 | unformat_input_t * input, |
| 3404 | vlib_cli_command_t * cmd) |
| 3405 | { |
| 3406 | ip6_sr_main_t *sm = &sr_main; |
| 3407 | sr_policy_fn_registration_t *plugin; |
| 3408 | sr_policy_fn_registration_t **plugins_vec = 0; |
| 3409 | int i; |
| 3410 | |
| 3411 | vlib_cli_output (vm, "SR Policy behaviors:\n-----------------------\n\n"); |
| 3412 | |
| 3413 | /* *INDENT-OFF* */ |
Damjan Marion | b2c31b6 | 2020-12-13 21:47:40 +0100 | [diff] [blame] | 3414 | pool_foreach (plugin, sm->policy_plugin_functions) |
| 3415 | { vec_add1 (plugins_vec, plugin); } |
Tetsuya Murakami | 70d8ef8 | 2019-12-04 18:57:46 -0800 | [diff] [blame] | 3416 | /* *INDENT-ON* */ |
| 3417 | |
| 3418 | vlib_cli_output (vm, "Plugin behaviors:\n"); |
| 3419 | for (i = 0; i < vec_len (plugins_vec); i++) |
| 3420 | { |
| 3421 | plugin = plugins_vec[i]; |
| 3422 | vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str, |
| 3423 | plugin->def_str); |
| 3424 | vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str); |
| 3425 | } |
| 3426 | return 0; |
| 3427 | } |
| 3428 | |
| 3429 | /* *INDENT-OFF* */ |
| 3430 | VLIB_CLI_COMMAND (show_sr_policy_behaviors_command, static) = { |
| 3431 | .path = "show sr policy behaviors", |
| 3432 | .short_help = "show sr policy behaviors", |
| 3433 | .function = show_sr_policy_behaviors_command_fn, |
| 3434 | }; |
| 3435 | /* *INDENT-ON* */ |
| 3436 | |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3437 | /*************************** SR Segment Lists DPOs ****************************/ |
| 3438 | static u8 * |
| 3439 | format_sr_segment_list_dpo (u8 * s, va_list * args) |
| 3440 | { |
| 3441 | ip6_sr_main_t *sm = &sr_main; |
| 3442 | ip6_address_t *addr; |
| 3443 | ip6_sr_sl_t *sl; |
| 3444 | |
| 3445 | index_t index = va_arg (*args, index_t); |
| 3446 | CLIB_UNUSED (u32 indent) = va_arg (*args, u32); |
| 3447 | s = format (s, "SR: Segment List index:[%d]", index); |
| 3448 | s = format (s, "\n\tSegments:"); |
| 3449 | |
| 3450 | sl = pool_elt_at_index (sm->sid_lists, index); |
| 3451 | |
| 3452 | s = format (s, "< "); |
| 3453 | vec_foreach (addr, sl->segments) |
| 3454 | { |
| 3455 | s = format (s, "%U, ", format_ip6_address, addr); |
| 3456 | } |
| 3457 | s = format (s, "\b\b > - "); |
| 3458 | s = format (s, "Weight: %u", sl->weight); |
| 3459 | |
| 3460 | return s; |
| 3461 | } |
| 3462 | |
| 3463 | const static dpo_vft_t sr_policy_rewrite_vft = { |
| 3464 | .dv_lock = sr_dpo_lock, |
| 3465 | .dv_unlock = sr_dpo_unlock, |
| 3466 | .dv_format = format_sr_segment_list_dpo, |
| 3467 | }; |
| 3468 | |
| 3469 | const static char *const sr_pr_encaps_ip6_nodes[] = { |
| 3470 | "sr-pl-rewrite-encaps", |
| 3471 | NULL, |
| 3472 | }; |
| 3473 | |
| 3474 | const static char *const sr_pr_encaps_ip4_nodes[] = { |
| 3475 | "sr-pl-rewrite-encaps-v4", |
| 3476 | NULL, |
| 3477 | }; |
| 3478 | |
| 3479 | const static char *const *const sr_pr_encaps_nodes[DPO_PROTO_NUM] = { |
| 3480 | [DPO_PROTO_IP6] = sr_pr_encaps_ip6_nodes, |
| 3481 | [DPO_PROTO_IP4] = sr_pr_encaps_ip4_nodes, |
| 3482 | }; |
| 3483 | |
| 3484 | const static char *const sr_pr_insert_ip6_nodes[] = { |
| 3485 | "sr-pl-rewrite-insert", |
| 3486 | NULL, |
| 3487 | }; |
| 3488 | |
| 3489 | const static char *const *const sr_pr_insert_nodes[DPO_PROTO_NUM] = { |
| 3490 | [DPO_PROTO_IP6] = sr_pr_insert_ip6_nodes, |
| 3491 | }; |
| 3492 | |
| 3493 | const static char *const sr_pr_bsid_insert_ip6_nodes[] = { |
| 3494 | "sr-pl-rewrite-b-insert", |
| 3495 | NULL, |
| 3496 | }; |
| 3497 | |
| 3498 | const static char *const *const sr_pr_bsid_insert_nodes[DPO_PROTO_NUM] = { |
| 3499 | [DPO_PROTO_IP6] = sr_pr_bsid_insert_ip6_nodes, |
| 3500 | }; |
| 3501 | |
| 3502 | const static char *const sr_pr_bsid_encaps_ip6_nodes[] = { |
| 3503 | "sr-pl-rewrite-b-encaps", |
| 3504 | NULL, |
| 3505 | }; |
| 3506 | |
| 3507 | const static char *const *const sr_pr_bsid_encaps_nodes[DPO_PROTO_NUM] = { |
| 3508 | [DPO_PROTO_IP6] = sr_pr_bsid_encaps_ip6_nodes, |
| 3509 | }; |
| 3510 | |
| 3511 | /********************* SR Policy Rewrite initialization ***********************/ |
| 3512 | /** |
| 3513 | * @brief SR Policy Rewrite initialization |
| 3514 | */ |
| 3515 | clib_error_t * |
| 3516 | sr_policy_rewrite_init (vlib_main_t * vm) |
| 3517 | { |
| 3518 | ip6_sr_main_t *sm = &sr_main; |
| 3519 | |
| 3520 | /* Init memory for sr policy keys (bsid <-> ip6_address_t) */ |
Pablo Camarillo | 4521afa | 2017-03-16 10:43:05 +0100 | [diff] [blame] | 3521 | mhash_init (&sm->sr_policies_index_hash, sizeof (uword), |
| 3522 | sizeof (ip6_address_t)); |
Pablo Camarillo | fb38095 | 2016-12-07 18:34:18 +0100 | [diff] [blame] | 3523 | |
| 3524 | /* Init SR VPO DPOs type */ |
| 3525 | sr_pr_encaps_dpo_type = |
| 3526 | dpo_register_new_type (&sr_policy_rewrite_vft, sr_pr_encaps_nodes); |
| 3527 | |
| 3528 | sr_pr_insert_dpo_type = |
| 3529 | dpo_register_new_type (&sr_policy_rewrite_vft, sr_pr_insert_nodes); |
| 3530 | |
| 3531 | sr_pr_bsid_encaps_dpo_type = |
| 3532 | dpo_register_new_type (&sr_policy_rewrite_vft, sr_pr_bsid_encaps_nodes); |
| 3533 | |
| 3534 | sr_pr_bsid_insert_dpo_type = |
| 3535 | dpo_register_new_type (&sr_policy_rewrite_vft, sr_pr_bsid_insert_nodes); |
| 3536 | |
| 3537 | /* Register the L2 encaps node used in HW redirect */ |
| 3538 | sm->l2_sr_policy_rewrite_index = sr_policy_rewrite_encaps_node.index; |
| 3539 | |
| 3540 | sm->fib_table_ip6 = (u32) ~ 0; |
| 3541 | sm->fib_table_ip4 = (u32) ~ 0; |
| 3542 | |
| 3543 | return 0; |
| 3544 | } |
| 3545 | |
| 3546 | VLIB_INIT_FUNCTION (sr_policy_rewrite_init); |
| 3547 | |
| 3548 | |
| 3549 | /* |
| 3550 | * fd.io coding-style-patch-verification: ON |
| 3551 | * |
| 3552 | * Local Variables: |
| 3553 | * eval: (c-set-style "gnu") |
| 3554 | * End: |
| 3555 | */ |