Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | |
| 16 | #include <vppinfra/vec.h> |
| 17 | |
| 18 | #include <vnet/bier/bier_table.h> |
| 19 | #include <vnet/bier/bier_entry.h> |
| 20 | #include <vnet/bier/bier_update.h> |
| 21 | #include <vnet/bier/bier_fmask_db.h> |
| 22 | #include <vnet/bier/bier_fmask.h> |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 23 | #include <vnet/bier/bier_bift_table.h> |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 24 | |
| 25 | #include <vnet/fib/mpls_fib.h> |
| 26 | #include <vnet/mpls/mpls.h> |
| 27 | #include <vnet/fib/fib_path_list.h> |
| 28 | |
| 29 | /** |
| 30 | * Memory pool of all the allocated tables |
| 31 | */ |
| 32 | bier_table_t *bier_table_pool; |
| 33 | |
| 34 | /** |
| 35 | * DB store of all BIER tables index by SD/set/hdr-len |
| 36 | */ |
| 37 | static uword *bier_tables_by_key; |
| 38 | |
| 39 | /** |
| 40 | * The magic number of BIER ECMP tables to create. |
| 41 | * The load-balance distribution algorithm will use a power of 2 |
| 42 | * for the number of buckets, which constrains the choice. |
| 43 | */ |
| 44 | #define BIER_N_ECMP_TABLES 16 |
| 45 | |
| 46 | static inline index_t |
| 47 | bier_table_get_index (const bier_table_t *bt) |
| 48 | { |
| 49 | return (bt - bier_table_pool); |
| 50 | } |
| 51 | |
| 52 | int |
| 53 | bier_table_is_main (const bier_table_t *bt) |
| 54 | { |
| 55 | return (BIER_ECMP_TABLE_ID_MAIN == bt->bt_id.bti_ecmp); |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | * Construct the key to use to find a BIER table |
| 60 | * in the global hash map |
| 61 | */ |
| 62 | static u32 |
| 63 | bier_table_mk_key (const bier_table_id_t *id) |
| 64 | { |
| 65 | /* |
| 66 | * the set and sub-domain Ids are 8 bit values. |
| 67 | * we have space for ECMP table ID and talbe type (SPF/TE) |
| 68 | * for later |
| 69 | */ |
| 70 | u32 key = ((id->bti_sub_domain << 24) | |
| 71 | (id->bti_set << 16) | |
| 72 | (id->bti_ecmp << 8) | |
| 73 | (id->bti_hdr_len << 4) | |
| 74 | (id->bti_type)); |
| 75 | |
| 76 | return (key); |
| 77 | } |
| 78 | |
| 79 | static void |
| 80 | bier_table_init (bier_table_t *bt, |
| 81 | const bier_table_id_t *id, |
| 82 | mpls_label_t ll) |
| 83 | { |
| 84 | u32 num_entries; |
| 85 | |
| 86 | bt->bt_lfei = FIB_NODE_INDEX_INVALID; |
| 87 | bt->bt_id = *id; |
| 88 | bt->bt_ll = ll; |
| 89 | num_entries = bier_hdr_len_id_to_num_bits(bt->bt_id.bti_hdr_len); |
| 90 | |
| 91 | /* |
| 92 | * create the lookup table of entries. |
| 93 | */ |
| 94 | if (bier_table_is_main(bt)) |
| 95 | { |
| 96 | vec_validate_init_empty_aligned(bt->bt_entries, |
| 97 | num_entries, |
| 98 | INDEX_INVALID, |
| 99 | CLIB_CACHE_LINE_BYTES); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 100 | } |
| 101 | else |
| 102 | { |
| 103 | vec_validate_init_empty_aligned(bt->bt_fmasks, |
| 104 | num_entries, |
| 105 | INDEX_INVALID, |
| 106 | CLIB_CACHE_LINE_BYTES); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | static void |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 111 | bier_table_rm_bift (bier_table_t *bt) |
| 112 | { |
| 113 | ASSERT(MPLS_LABEL_INVALID == bt->bt_ll); |
| 114 | |
| 115 | bier_bift_table_entry_remove(bier_bift_id_encode(bt->bt_id.bti_set, |
| 116 | bt->bt_id.bti_sub_domain, |
| 117 | bt->bt_id.bti_hdr_len)); |
| 118 | } |
| 119 | |
| 120 | static void |
| 121 | bier_table_mk_bift (bier_table_t *bt) |
| 122 | { |
| 123 | dpo_id_t dpo = DPO_INVALID; |
| 124 | |
| 125 | ASSERT(MPLS_LABEL_INVALID == bt->bt_ll); |
| 126 | |
| 127 | bier_table_contribute_forwarding(bier_table_get_index(bt), &dpo); |
| 128 | |
| 129 | bier_bift_table_entry_add(bier_bift_id_encode(bt->bt_id.bti_set, |
| 130 | bt->bt_id.bti_sub_domain, |
| 131 | bt->bt_id.bti_hdr_len), |
| 132 | &dpo); |
| 133 | |
| 134 | dpo_reset(&dpo); |
| 135 | } |
| 136 | |
| 137 | static void |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 138 | bier_table_rm_lfib (bier_table_t *bt) |
| 139 | { |
| 140 | if (FIB_NODE_INDEX_INVALID != bt->bt_lfei) |
| 141 | { |
| 142 | fib_table_entry_delete_index(bt->bt_lfei, |
| 143 | FIB_SOURCE_BIER); |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 144 | fib_table_unlock(MPLS_FIB_DEFAULT_TABLE_ID, |
| 145 | FIB_PROTOCOL_MPLS, |
| 146 | FIB_SOURCE_BIER); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 147 | } |
| 148 | bt->bt_lfei = FIB_NODE_INDEX_INVALID; |
| 149 | } |
| 150 | |
| 151 | static void |
| 152 | bier_table_destroy (bier_table_t *bt) |
| 153 | { |
| 154 | if (bier_table_is_main(bt)) |
| 155 | { |
| 156 | index_t *bei; |
| 157 | |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 158 | if (MPLS_LABEL_INVALID != bt->bt_ll) |
| 159 | { |
| 160 | bier_table_rm_lfib(bt); |
| 161 | } |
| 162 | else |
| 163 | { |
| 164 | bier_table_rm_bift(bt); |
| 165 | } |
| 166 | |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 167 | fib_path_list_unlock(bt->bt_pl); |
| 168 | bt->bt_pl = FIB_NODE_INDEX_INVALID; |
| 169 | /* |
| 170 | * unresolve/remove all entries from the table |
| 171 | */ |
| 172 | vec_foreach (bei, bt->bt_entries) |
| 173 | { |
| 174 | if (INDEX_INVALID != *bei) |
| 175 | { |
| 176 | bier_entry_delete(*bei); |
| 177 | } |
| 178 | } |
| 179 | vec_free (bt->bt_entries); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 180 | } |
| 181 | else |
| 182 | { |
| 183 | index_t *bfmi; |
| 184 | |
| 185 | /* |
| 186 | * unlock any fmasks |
| 187 | */ |
| 188 | vec_foreach (bfmi, bt->bt_fmasks) |
| 189 | { |
| 190 | bier_fmask_unlock(*bfmi); |
| 191 | } |
| 192 | vec_free(bt->bt_fmasks); |
| 193 | } |
| 194 | |
| 195 | hash_unset(bier_tables_by_key, |
| 196 | bier_table_mk_key(&bt->bt_id)); |
| 197 | pool_put(bier_table_pool, bt); |
| 198 | } |
| 199 | |
| 200 | static void |
| 201 | bier_table_lock_i (bier_table_t *bt) |
| 202 | { |
| 203 | bt->bt_locks++; |
| 204 | } |
| 205 | |
| 206 | static void |
| 207 | bier_table_unlock_i (bier_table_t *bt) |
| 208 | { |
| 209 | bt->bt_locks--; |
| 210 | |
| 211 | if (0 == bt->bt_locks) |
| 212 | { |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 213 | bier_table_destroy(bt); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | void |
| 218 | bier_table_unlock (const bier_table_id_t *bti) |
| 219 | { |
| 220 | uword *p; |
| 221 | u32 key; |
| 222 | |
| 223 | key = bier_table_mk_key(bti); |
| 224 | |
| 225 | p = hash_get (bier_tables_by_key, key); |
| 226 | |
| 227 | if (NULL != p) { |
| 228 | bier_table_unlock_i(bier_table_get(p[0])); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | static void |
| 233 | bier_table_mk_lfib (bier_table_t *bt) |
| 234 | { |
| 235 | /* |
| 236 | * Add a new MPLS lfib entry |
| 237 | */ |
| 238 | if (MPLS_LABEL_INVALID != bt->bt_ll) { |
| 239 | fib_prefix_t pfx = { |
| 240 | .fp_proto = FIB_PROTOCOL_MPLS, |
| 241 | .fp_len = 21, |
| 242 | .fp_label = bt->bt_ll, |
| 243 | .fp_eos = MPLS_EOS, |
| 244 | .fp_payload_proto = DPO_PROTO_BIER, |
| 245 | }; |
| 246 | u32 mpls_fib_index; |
| 247 | dpo_id_t dpo = DPO_INVALID; |
| 248 | |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 249 | fib_table_find_or_create_and_lock(FIB_PROTOCOL_MPLS, |
| 250 | MPLS_FIB_DEFAULT_TABLE_ID, |
| 251 | FIB_SOURCE_BIER); |
| 252 | |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 253 | /* |
| 254 | * stack the entry on the forwarding chain prodcued by the |
| 255 | * path-list via the ECMP tables. |
| 256 | */ |
| 257 | fib_path_list_contribute_forwarding(bt->bt_pl, |
| 258 | FIB_FORW_CHAIN_TYPE_BIER, |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 259 | FIB_PATH_LIST_FWD_FLAG_COLLAPSE, |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 260 | &dpo); |
| 261 | |
| 262 | mpls_fib_index = fib_table_find(FIB_PROTOCOL_MPLS, |
| 263 | MPLS_FIB_DEFAULT_TABLE_ID); |
| 264 | bt->bt_lfei = fib_table_entry_special_dpo_add(mpls_fib_index, |
| 265 | &pfx, |
| 266 | FIB_SOURCE_BIER, |
| 267 | FIB_ENTRY_FLAG_EXCLUSIVE, |
| 268 | &dpo); |
| 269 | dpo_reset(&dpo); |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | static bier_table_t * |
| 274 | bier_table_find (const bier_table_id_t *bti) |
| 275 | { |
| 276 | uword *p; |
| 277 | u32 key; |
| 278 | |
| 279 | key = bier_table_mk_key(bti); |
| 280 | |
| 281 | p = hash_get(bier_tables_by_key, key); |
| 282 | |
| 283 | if (NULL != p) |
| 284 | { |
| 285 | return (bier_table_get(p[0])); |
| 286 | } |
| 287 | |
| 288 | return (NULL); |
| 289 | } |
| 290 | |
| 291 | static bier_table_t * |
| 292 | bier_table_mk_ecmp (index_t bti) |
| 293 | { |
| 294 | fib_route_path_t *rpaths; |
| 295 | fib_node_index_t pli; |
| 296 | bier_table_t *bt; |
| 297 | int ii; |
| 298 | |
| 299 | rpaths = NULL; |
| 300 | bt = bier_table_get(bti); |
| 301 | |
| 302 | vec_validate(rpaths, BIER_N_ECMP_TABLES-1); |
| 303 | |
| 304 | vec_foreach_index(ii, rpaths) |
| 305 | { |
| 306 | rpaths[ii].frp_bier_tbl = bt->bt_id; |
| 307 | rpaths[ii].frp_bier_tbl.bti_ecmp = ii; |
| 308 | rpaths[ii].frp_flags = FIB_ROUTE_PATH_BIER_TABLE; |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * no oppotunity to share, this the resolving ECMP tables are unique |
| 313 | * to this table. |
| 314 | * no need to be a child of the path list, we can do nothing with any |
| 315 | * notifications it would generate [not that it will]. |
| 316 | */ |
| 317 | pli = fib_path_list_create(FIB_PATH_LIST_FLAG_NO_URPF, rpaths); |
| 318 | fib_path_list_lock(pli); |
| 319 | |
| 320 | /* |
| 321 | * constructing the path-list will have created many more BIER tables, |
| 322 | * so this main table will no doubt have re-alloc. |
| 323 | */ |
| 324 | bt = bier_table_get(bti); |
| 325 | bt->bt_pl = pli; |
| 326 | |
| 327 | vec_free(rpaths); |
| 328 | |
| 329 | return (bt); |
| 330 | } |
| 331 | |
Neale Ranns | fe4e48f | 2018-09-24 23:38:37 -0700 | [diff] [blame^] | 332 | |
| 333 | static index_t |
| 334 | bier_table_create (const bier_table_id_t *btid, |
| 335 | mpls_label_t local_label) |
| 336 | { |
| 337 | /* |
| 338 | * add a new table |
| 339 | */ |
| 340 | bier_table_t *bt; |
| 341 | index_t bti; |
| 342 | u32 key; |
| 343 | |
| 344 | key = bier_table_mk_key(btid); |
| 345 | |
| 346 | pool_get_aligned(bier_table_pool, bt, CLIB_CACHE_LINE_BYTES); |
| 347 | bier_table_init(bt, btid, local_label); |
| 348 | |
| 349 | hash_set(bier_tables_by_key, key, bier_table_get_index(bt)); |
| 350 | bti = bier_table_get_index(bt); |
| 351 | |
| 352 | if (bier_table_is_main(bt)) |
| 353 | { |
| 354 | bt = bier_table_mk_ecmp(bti); |
| 355 | |
| 356 | /* |
| 357 | * add whichever mpls-fib or bift we need |
| 358 | */ |
| 359 | if (local_label != MPLS_LABEL_INVALID) |
| 360 | { |
| 361 | bt->bt_ll = local_label; |
| 362 | bier_table_mk_lfib(bt); |
| 363 | } |
| 364 | else |
| 365 | { |
| 366 | bier_table_mk_bift(bt); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | return (bti); |
| 371 | } |
| 372 | |
| 373 | index_t |
| 374 | bier_table_lock (const bier_table_id_t *btid) |
| 375 | { |
| 376 | bier_table_t *bt; |
| 377 | index_t bti; |
| 378 | |
| 379 | bt = bier_table_find(btid); |
| 380 | |
| 381 | if (NULL == bt) |
| 382 | { |
| 383 | bti = bier_table_create(btid, MPLS_LABEL_INVALID); |
| 384 | bt = bier_table_get(bti); |
| 385 | } |
| 386 | else |
| 387 | { |
| 388 | bti = bier_table_get_index(bt); |
| 389 | } |
| 390 | |
| 391 | bier_table_lock_i(bt); |
| 392 | |
| 393 | return (bti); |
| 394 | } |
| 395 | |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 396 | index_t |
| 397 | bier_table_add_or_lock (const bier_table_id_t *btid, |
| 398 | mpls_label_t local_label) |
| 399 | { |
| 400 | bier_table_t *bt; |
| 401 | index_t bti; |
| 402 | |
| 403 | bt = bier_table_find(btid); |
| 404 | |
| 405 | if (NULL != bt) { |
| 406 | /* |
| 407 | * modify an existing table. |
| 408 | * change the lfib entry to the new local label |
| 409 | */ |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 410 | if (bier_table_is_main(bt)) |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 411 | { |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 412 | /* |
| 413 | * remove the mpls-fib or bift entry |
| 414 | */ |
| 415 | if (MPLS_LABEL_INVALID != bt->bt_ll) |
| 416 | { |
| 417 | bier_table_rm_lfib(bt); |
| 418 | } |
| 419 | else |
| 420 | { |
| 421 | bier_table_rm_bift(bt); |
| 422 | } |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 423 | |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 424 | /* |
| 425 | * reset |
| 426 | */ |
| 427 | bt->bt_ll = MPLS_LABEL_INVALID; |
| 428 | |
| 429 | /* |
| 430 | * add whichever mpls-fib or bift we need |
| 431 | */ |
| 432 | if (local_label != MPLS_LABEL_INVALID) |
| 433 | { |
| 434 | bt->bt_ll = local_label; |
| 435 | bier_table_mk_lfib(bt); |
| 436 | } |
| 437 | else |
| 438 | { |
| 439 | bier_table_mk_bift(bt); |
| 440 | } |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 441 | } |
| 442 | bti = bier_table_get_index(bt); |
| 443 | } |
| 444 | else |
| 445 | { |
Neale Ranns | fe4e48f | 2018-09-24 23:38:37 -0700 | [diff] [blame^] | 446 | bti = bier_table_create(btid, local_label); |
| 447 | bt = bier_table_get(bti); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | bier_table_lock_i(bt); |
| 451 | |
| 452 | return (bti); |
| 453 | } |
| 454 | |
| 455 | index_t |
| 456 | bier_table_ecmp_create_and_lock (const bier_table_id_t *btid) |
| 457 | { |
| 458 | return (bier_table_add_or_lock(btid, MPLS_LABEL_INVALID)); |
| 459 | } |
| 460 | |
| 461 | void |
| 462 | bier_table_ecmp_unlock (index_t bti) |
| 463 | { |
| 464 | bier_table_unlock_i(bier_table_get(bti)); |
| 465 | } |
| 466 | |
| 467 | static void |
| 468 | bier_table_dpo_lock (dpo_id_t *dpo) |
| 469 | { |
| 470 | } |
| 471 | |
| 472 | static void |
| 473 | bier_table_dpo_unlock (dpo_id_t *dpo) |
| 474 | { |
| 475 | } |
| 476 | |
| 477 | static void |
| 478 | bier_table_dpo_mem_show (void) |
| 479 | { |
| 480 | fib_show_memory_usage("BIER-table", |
| 481 | pool_elts(bier_table_pool), |
| 482 | pool_len(bier_table_pool), |
| 483 | sizeof(bier_table_t)); |
| 484 | } |
| 485 | static u8 * |
| 486 | format_bier_table_dpo (u8 *s, va_list *ap) |
| 487 | { |
| 488 | index_t bti = va_arg(*ap, index_t); |
| 489 | bier_table_t *bt; |
| 490 | |
| 491 | bt = bier_table_get(bti); |
| 492 | |
| 493 | return (format(s, "[%U]", format_bier_table_id, &bt->bt_id)); |
| 494 | } |
| 495 | |
| 496 | const static dpo_vft_t bier_table_dpo_vft = { |
| 497 | .dv_lock = bier_table_dpo_lock, |
| 498 | .dv_unlock = bier_table_dpo_unlock, |
| 499 | .dv_format = format_bier_table_dpo, |
| 500 | .dv_mem_show = bier_table_dpo_mem_show, |
| 501 | }; |
| 502 | |
| 503 | const static char *const bier_table_mpls_nodes[] = |
| 504 | { |
Gabriel Ganne | 0f8a96c | 2017-11-14 14:43:34 +0100 | [diff] [blame] | 505 | "bier-input", |
| 506 | NULL |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 507 | }; |
| 508 | const static char * const * const bier_table_nodes[DPO_PROTO_NUM] = |
| 509 | { |
| 510 | [DPO_PROTO_BIER] = bier_table_mpls_nodes, |
| 511 | }; |
| 512 | |
| 513 | static clib_error_t * |
| 514 | bier_table_module_init (vlib_main_t *vm) |
| 515 | { |
| 516 | dpo_register(DPO_BIER_TABLE, &bier_table_dpo_vft, bier_table_nodes); |
| 517 | |
| 518 | return (NULL); |
| 519 | } |
| 520 | |
| 521 | VLIB_INIT_FUNCTION (bier_table_module_init); |
| 522 | |
| 523 | const bier_table_id_t * |
| 524 | bier_table_get_id (index_t bti) |
| 525 | { |
| 526 | bier_table_t *bt; |
| 527 | |
| 528 | bt = bier_table_get(bti); |
| 529 | |
| 530 | return (&bt->bt_id); |
| 531 | } |
| 532 | |
| 533 | static void |
| 534 | bier_table_insert (bier_table_t *bt, |
| 535 | bier_bp_t bp, |
| 536 | index_t bei) |
| 537 | { |
| 538 | bt->bt_entries[BIER_BP_TO_INDEX(bp)] = bei; |
| 539 | } |
| 540 | |
| 541 | static void |
| 542 | bier_table_remove (bier_table_t *bt, |
| 543 | bier_bp_t bp) |
| 544 | { |
| 545 | bt->bt_entries[BIER_BP_TO_INDEX(bp)] = INDEX_INVALID; |
| 546 | } |
| 547 | |
| 548 | void |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 549 | bier_table_route_path_update_i (const bier_table_id_t *btid, |
| 550 | bier_bp_t bp, |
| 551 | fib_route_path_t *brps, |
| 552 | u8 is_replace) |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 553 | { |
| 554 | index_t bfmi, bti, bei, *bfmip, *bfmis = NULL; |
| 555 | fib_route_path_t *brp; |
| 556 | bier_table_t *bt; |
| 557 | |
| 558 | bt = bier_table_find(btid); |
| 559 | |
| 560 | if (NULL == bt) { |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | bti = bier_table_get_index(bt); |
| 565 | bei = bier_table_lookup(bt, bp); |
| 566 | |
| 567 | /* |
| 568 | * set the FIB index in the path to the BIER table index |
| 569 | */ |
| 570 | vec_foreach(brp, brps) |
| 571 | { |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 572 | /* |
| 573 | * First use the path to find or construct an FMask object |
| 574 | * via the next-hop |
| 575 | */ |
| 576 | bfmi = bier_fmask_db_find_or_create_and_lock(bti, brp); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 577 | vec_add1(bfmis, bfmi); |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 578 | |
| 579 | /* |
| 580 | * then modify the path to resolve via this fmask object |
| 581 | * and use it to resolve the BIER entry. |
| 582 | */ |
| 583 | brp->frp_flags = FIB_ROUTE_PATH_BIER_FMASK; |
| 584 | brp->frp_bier_fmask = bfmi; |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | if (INDEX_INVALID == bei) |
| 588 | { |
| 589 | bei = bier_entry_create(bti, bp); |
| 590 | bier_table_insert(bt, bp, bei); |
| 591 | } |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 592 | |
| 593 | if (is_replace) |
| 594 | { |
| 595 | bier_entry_path_update(bei, brps); |
| 596 | } |
| 597 | else |
| 598 | { |
| 599 | fib_route_path_t *t_paths = NULL; |
| 600 | |
| 601 | vec_foreach(brp, brps) |
| 602 | { |
| 603 | vec_add1(t_paths, *brp); |
| 604 | bier_entry_path_add(bei, t_paths); |
| 605 | vec_reset_length(t_paths); |
| 606 | } |
| 607 | vec_free(t_paths); |
| 608 | } |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 609 | |
| 610 | vec_foreach(bfmip, bfmis) |
| 611 | { |
| 612 | bier_fmask_unlock(*bfmip); |
| 613 | } |
| 614 | vec_free(bfmis); |
| 615 | } |
| 616 | |
| 617 | void |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 618 | bier_table_route_path_update (const bier_table_id_t *btid, |
| 619 | bier_bp_t bp, |
| 620 | fib_route_path_t *brps) |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 621 | { |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 622 | bier_table_route_path_update_i(btid, bp, brps, 1); |
| 623 | } |
| 624 | void |
| 625 | bier_table_route_path_add (const bier_table_id_t *btid, |
| 626 | bier_bp_t bp, |
| 627 | fib_route_path_t *brps) |
| 628 | { |
| 629 | bier_table_route_path_update_i(btid, bp, brps, 0); |
| 630 | } |
| 631 | |
| 632 | void |
| 633 | bier_table_route_delete (const bier_table_id_t *btid, |
| 634 | bier_bp_t bp) |
| 635 | { |
| 636 | bier_table_t *bt; |
| 637 | index_t bei; |
| 638 | |
| 639 | bt = bier_table_find(btid); |
| 640 | |
| 641 | if (NULL == bt) { |
| 642 | return; |
| 643 | } |
| 644 | |
| 645 | bei = bier_table_lookup(bt, bp); |
| 646 | |
| 647 | if (INDEX_INVALID == bei) |
| 648 | { |
| 649 | /* no such entry */ |
| 650 | return; |
| 651 | } |
| 652 | |
| 653 | bier_table_remove(bt, bp); |
| 654 | bier_entry_delete(bei); |
| 655 | } |
| 656 | |
| 657 | void |
| 658 | bier_table_route_path_remove (const bier_table_id_t *btid, |
| 659 | bier_bp_t bp, |
| 660 | fib_route_path_t *brps) |
| 661 | { |
| 662 | fib_route_path_t *brp = NULL, *t_paths = NULL; |
Neale Ranns | f051072 | 2018-01-31 11:35:41 -0800 | [diff] [blame] | 663 | index_t bfmi, bti, bei; |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 664 | bier_table_t *bt; |
Neale Ranns | f051072 | 2018-01-31 11:35:41 -0800 | [diff] [blame] | 665 | u32 ii; |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 666 | |
Neale Ranns | f051072 | 2018-01-31 11:35:41 -0800 | [diff] [blame] | 667 | bt = bier_table_find(btid); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 668 | |
| 669 | if (NULL == bt) { |
| 670 | return; |
| 671 | } |
| 672 | |
Neale Ranns | f051072 | 2018-01-31 11:35:41 -0800 | [diff] [blame] | 673 | bti = bier_table_get_index(bt); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 674 | bei = bier_table_lookup(bt, bp); |
| 675 | |
| 676 | if (INDEX_INVALID == bei) |
| 677 | { |
| 678 | /* no such entry */ |
| 679 | return; |
| 680 | } |
| 681 | |
Neale Ranns | f051072 | 2018-01-31 11:35:41 -0800 | [diff] [blame] | 682 | /* |
| 683 | * set the FIB index in the path to the BIER table index |
| 684 | */ |
| 685 | vec_foreach_index(ii, brps) |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 686 | { |
Neale Ranns | f051072 | 2018-01-31 11:35:41 -0800 | [diff] [blame] | 687 | brp = &brps[ii]; |
| 688 | bfmi = bier_fmask_db_find(bti, brp); |
| 689 | |
| 690 | if (INDEX_INVALID == bfmi) |
| 691 | { |
| 692 | /* |
| 693 | * no matching fmask, not a path we can remove |
| 694 | */ |
| 695 | vec_del1(brps, ii); |
| 696 | continue; |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * then modify the path to resolve via this fmask object |
| 701 | * and use it to resolve the BIER entry. |
| 702 | */ |
| 703 | brp->frp_flags = FIB_ROUTE_PATH_BIER_FMASK; |
| 704 | brp->frp_bier_fmask = bfmi; |
| 705 | } |
| 706 | |
| 707 | if (0 == vec_len(brps)) |
| 708 | { |
| 709 | return; |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 710 | } |
| 711 | |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 712 | vec_foreach(brp, brps) |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 713 | { |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 714 | vec_add1(t_paths, *brp); |
| 715 | if (0 == bier_entry_path_remove(bei, t_paths)) |
| 716 | { |
| 717 | /* 0 remaining paths */ |
| 718 | bier_table_remove(bt, bp); |
| 719 | bier_entry_delete(bei); |
| 720 | break; |
| 721 | } |
| 722 | vec_reset_length(t_paths); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 723 | } |
Neale Ranns | ef90ed0 | 2018-09-13 08:45:12 -0700 | [diff] [blame] | 724 | vec_free(t_paths); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 725 | } |
| 726 | |
| 727 | void |
| 728 | bier_table_contribute_forwarding (index_t bti, |
| 729 | dpo_id_t *dpo) |
| 730 | { |
| 731 | bier_table_t *bt; |
| 732 | |
| 733 | bt = bier_table_get(bti); |
| 734 | |
| 735 | if (BIER_ECMP_TABLE_ID_MAIN == bt->bt_id.bti_ecmp) |
| 736 | { |
| 737 | /* |
| 738 | * return the load-balance for the ECMP tables |
| 739 | */ |
| 740 | fib_path_list_contribute_forwarding(bt->bt_pl, |
| 741 | FIB_FORW_CHAIN_TYPE_BIER, |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 742 | FIB_PATH_LIST_FWD_FLAG_COLLAPSE, |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 743 | dpo); |
| 744 | } |
| 745 | else |
| 746 | { |
| 747 | dpo_set(dpo, DPO_BIER_TABLE, DPO_PROTO_BIER, bti); |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | typedef struct bier_table_ecmp_walk_ctx_t_ |
| 752 | { |
| 753 | bier_table_ecmp_walk_fn_t fn; |
| 754 | void *ctx; |
| 755 | } bier_table_ecmp_walk_ctx_t; |
| 756 | |
| 757 | static fib_path_list_walk_rc_t |
| 758 | bier_table_ecmp_walk_path_list (fib_node_index_t pl_index, |
| 759 | fib_node_index_t path_index, |
| 760 | void *arg) |
| 761 | { |
| 762 | bier_table_ecmp_walk_ctx_t *ctx = arg; |
| 763 | |
| 764 | ctx->fn(fib_path_get_resolving_index(path_index), ctx->ctx); |
| 765 | /* continue */ |
| 766 | return (FIB_PATH_LIST_WALK_CONTINUE); |
| 767 | } |
| 768 | |
| 769 | void |
| 770 | bier_table_ecmp_walk (index_t bti, |
| 771 | bier_table_ecmp_walk_fn_t fn, |
| 772 | void *ctx) |
| 773 | { |
| 774 | bier_table_ecmp_walk_ctx_t ewc = { |
| 775 | .fn = fn, |
| 776 | .ctx = ctx, |
| 777 | }; |
| 778 | bier_table_t *bt; |
| 779 | |
| 780 | bt = bier_table_get(bti); |
| 781 | |
| 782 | fib_path_list_walk(bt->bt_pl, |
| 783 | bier_table_ecmp_walk_path_list, |
| 784 | &ewc); |
| 785 | } |
| 786 | |
| 787 | void |
| 788 | bier_table_ecmp_set_fmask (index_t bti, |
| 789 | bier_bp_t bp, |
| 790 | index_t bfmi) |
| 791 | { |
| 792 | bier_table_t *bt; |
| 793 | |
| 794 | bt = bier_table_get(bti); |
| 795 | |
| 796 | /* |
| 797 | * we hold a lock for fmasks in the table |
| 798 | */ |
| 799 | bier_fmask_lock(bfmi); |
| 800 | bier_fmask_unlock(bt->bt_fmasks[BIER_BP_TO_INDEX(bp)]); |
| 801 | |
| 802 | bt->bt_fmasks[BIER_BP_TO_INDEX(bp)] = bfmi; |
| 803 | } |
| 804 | |
| 805 | u8 * |
| 806 | format_bier_table_entry (u8 *s, va_list *ap) |
| 807 | { |
| 808 | index_t bti = va_arg(*ap, index_t); |
| 809 | bier_bp_t bp = va_arg(*ap, bier_bp_t); |
| 810 | bier_table_t *bt; |
| 811 | bt = bier_table_get(bti); |
| 812 | |
| 813 | if (bier_table_is_main(bt)) |
| 814 | { |
| 815 | index_t bei; |
| 816 | |
| 817 | bei = bier_table_lookup(bier_table_get(bti), bp); |
| 818 | |
| 819 | if (INDEX_INVALID != bei) |
| 820 | { |
| 821 | s = format(s, "%U", format_bier_entry, bei, |
| 822 | BIER_SHOW_DETAIL); |
| 823 | } |
| 824 | } |
| 825 | else |
| 826 | { |
| 827 | index_t bfmi; |
| 828 | |
| 829 | bfmi = bier_table_fwd_lookup(bier_table_get(bti), bp); |
| 830 | |
| 831 | if (INDEX_INVALID != bfmi) |
| 832 | { |
| 833 | s = format(s, "%U", format_bier_fmask, bfmi, |
| 834 | BIER_SHOW_DETAIL); |
| 835 | } |
| 836 | } |
| 837 | return (s); |
| 838 | } |
| 839 | |
| 840 | u8 * |
| 841 | format_bier_table (u8 *s, va_list *ap) |
| 842 | { |
| 843 | index_t bti = va_arg(*ap, index_t); |
| 844 | bier_show_flags_t flags = va_arg(*ap, bier_show_flags_t); |
| 845 | bier_table_t *bt; |
| 846 | |
| 847 | if (pool_is_free_index(bier_table_pool, bti)) |
| 848 | { |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 849 | return (format(s, "No BIER table %d", bti)); |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 850 | } |
| 851 | |
| 852 | bt = bier_table_get(bti); |
| 853 | |
Neale Ranns | 9128637 | 2017-12-05 13:24:04 -0800 | [diff] [blame] | 854 | s = format(s, "[@%d] bier-table:[%U local-label:%U", |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 855 | bti, |
| 856 | format_bier_table_id, &bt->bt_id, |
| 857 | format_mpls_unicast_label, bt->bt_ll); |
| 858 | |
| 859 | if (flags & BIER_SHOW_DETAIL) |
| 860 | { |
| 861 | s = format(s, " locks:%d", bt->bt_locks); |
| 862 | } |
| 863 | s = format(s, "]"); |
| 864 | |
| 865 | if (flags & BIER_SHOW_DETAIL) |
| 866 | { |
| 867 | if (bier_table_is_main(bt)) |
| 868 | { |
| 869 | index_t *bei; |
| 870 | |
| 871 | vec_foreach (bei, bt->bt_entries) |
| 872 | { |
| 873 | if (INDEX_INVALID != *bei) |
| 874 | { |
| 875 | s = format(s, "\n%U", format_bier_entry, *bei, 2); |
| 876 | } |
| 877 | } |
| 878 | } |
| 879 | else |
| 880 | { |
| 881 | u32 ii; |
| 882 | |
| 883 | vec_foreach_index (ii, bt->bt_fmasks) |
| 884 | { |
| 885 | if (INDEX_INVALID != bt->bt_fmasks[ii]) |
| 886 | { |
| 887 | s = format(s, "\n bp:%d\n %U", ii, |
| 888 | format_bier_fmask, bt->bt_fmasks[ii], 2); |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | return (s); |
| 895 | } |
| 896 | |
| 897 | void |
| 898 | bier_table_show_all (vlib_main_t * vm, |
| 899 | bier_show_flags_t flags) |
| 900 | { |
| 901 | if (!pool_elts(bier_table_pool)) |
| 902 | { |
| 903 | vlib_cli_output (vm, "No BIER tables"); |
| 904 | } |
| 905 | else |
| 906 | { |
| 907 | int ii; |
| 908 | |
| 909 | pool_foreach_index(ii, bier_table_pool, |
| 910 | ({ |
| 911 | vlib_cli_output (vm, "%U", format_bier_table, ii, flags); |
| 912 | })); |
| 913 | } |
| 914 | } |
| 915 | |
| 916 | void |
| 917 | bier_tables_walk (bier_tables_walk_fn_t fn, |
| 918 | void *ctx) |
| 919 | { |
| 920 | ASSERT(0); |
| 921 | } |
| 922 | |
| 923 | |
| 924 | void |
| 925 | bier_table_walk (const bier_table_id_t *bti, |
| 926 | bier_table_walk_fn_t fn, |
| 927 | void *ctx) |
| 928 | { |
| 929 | bier_table_t *bt; |
| 930 | bier_entry_t *be; |
| 931 | index_t *bei; |
| 932 | |
| 933 | bt = bier_table_find(bti); |
| 934 | |
| 935 | if (NULL == bt) |
| 936 | { |
| 937 | return; |
| 938 | } |
| 939 | |
| 940 | vec_foreach (bei, bt->bt_entries) |
| 941 | { |
| 942 | if (INDEX_INVALID != *bei) |
| 943 | { |
| 944 | be = bier_entry_get(*bei); |
| 945 | |
| 946 | fn(bt, be, ctx); |
| 947 | } |
| 948 | } |
| 949 | } |