1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2014 Intel Corporation 3 */ 4 5 #include <stdio.h> 6 #include <string.h> 7 8 #include <rte_common.h> 9 #include <rte_log.h> 10 #include <rte_memory.h> 11 #include <rte_malloc.h> 12 #include <rte_cycles.h> 13 #include <rte_prefetch.h> 14 #include <rte_branch_prediction.h> 15 #include <rte_mbuf.h> 16 #include <rte_bitmap.h> 17 #include <rte_reciprocal.h> 18 19 #include "rte_sched.h" 20 #include "rte_sched_common.h" 21 #include "rte_approx.h" 22 23 #ifdef __INTEL_COMPILER 24 #pragma warning(disable:2259) /* conversion may lose significant bits */ 25 #endif 26 27 #ifdef RTE_SCHED_VECTOR 28 #include <rte_vect.h> 29 30 #ifdef RTE_ARCH_X86 31 #define SCHED_VECTOR_SSE4 32 #elif defined(__ARM_NEON) 33 #define SCHED_VECTOR_NEON 34 #endif 35 36 #endif 37 38 #define RTE_SCHED_TB_RATE_CONFIG_ERR (1e-7) 39 #define RTE_SCHED_WRR_SHIFT 3 40 #define RTE_SCHED_MAX_QUEUES_PER_TC RTE_SCHED_BE_QUEUES_PER_PIPE 41 #define RTE_SCHED_GRINDER_PCACHE_SIZE (64 / RTE_SCHED_QUEUES_PER_PIPE) 42 #define RTE_SCHED_PIPE_INVALID UINT32_MAX 43 #define RTE_SCHED_BMP_POS_INVALID UINT32_MAX 44 45 /* Scaling for cycles_per_byte calculation 46 * Chosen so that minimum rate is 480 bit/sec 47 */ 48 #define RTE_SCHED_TIME_SHIFT 8 49 50 struct rte_sched_pipe_profile { 51 /* Token bucket (TB) */ 52 uint64_t tb_period; 53 uint64_t tb_credits_per_period; 54 uint64_t tb_size; 55 56 /* Pipe traffic classes */ 57 uint64_t tc_period; 58 uint64_t tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 59 uint8_t tc_ov_weight; 60 61 /* Pipe best-effort traffic class queues */ 62 uint8_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 63 }; 64 65 struct rte_sched_pipe { 66 /* Token bucket (TB) */ 67 uint64_t tb_time; /* time of last update */ 68 uint64_t tb_credits; 69 70 /* Pipe profile and flags */ 71 uint32_t profile; 72 73 /* Traffic classes (TCs) */ 74 uint64_t tc_time; /* time of next update */ 75 uint64_t tc_credits[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 76 77 /* Weighted Round Robin (WRR) */ 78 uint8_t wrr_tokens[RTE_SCHED_BE_QUEUES_PER_PIPE]; 79 80 /* TC oversubscription */ 81 uint64_t tc_ov_credits; 82 uint8_t tc_ov_period_id; 83 } __rte_cache_aligned; 84 85 struct rte_sched_queue { 86 uint16_t qw; 87 uint16_t qr; 88 }; 89 90 struct rte_sched_queue_extra { 91 struct rte_sched_queue_stats stats; 92 #ifdef RTE_SCHED_RED 93 struct rte_red red; 94 #endif 95 }; 96 97 enum grinder_state { 98 e_GRINDER_PREFETCH_PIPE = 0, 99 e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS, 100 e_GRINDER_PREFETCH_MBUF, 101 e_GRINDER_READ_MBUF 102 }; 103 104 struct rte_sched_subport_profile { 105 /* Token bucket (TB) */ 106 uint64_t tb_period; 107 uint64_t tb_credits_per_period; 108 uint64_t tb_size; 109 110 uint64_t tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 111 uint64_t tc_period; 112 }; 113 114 struct rte_sched_grinder { 115 /* Pipe cache */ 116 uint16_t pcache_qmask[RTE_SCHED_GRINDER_PCACHE_SIZE]; 117 uint32_t pcache_qindex[RTE_SCHED_GRINDER_PCACHE_SIZE]; 118 uint32_t pcache_w; 119 uint32_t pcache_r; 120 121 /* Current pipe */ 122 enum grinder_state state; 123 uint32_t productive; 124 uint32_t pindex; 125 struct rte_sched_subport *subport; 126 struct rte_sched_subport_profile *subport_params; 127 struct rte_sched_pipe *pipe; 128 struct rte_sched_pipe_profile *pipe_params; 129 130 /* TC cache */ 131 uint8_t tccache_qmask[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 132 uint32_t tccache_qindex[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 133 uint32_t tccache_w; 134 uint32_t tccache_r; 135 136 /* Current TC */ 137 uint32_t tc_index; 138 struct rte_sched_queue *queue[RTE_SCHED_MAX_QUEUES_PER_TC]; 139 struct rte_mbuf **qbase[RTE_SCHED_MAX_QUEUES_PER_TC]; 140 uint32_t qindex[RTE_SCHED_MAX_QUEUES_PER_TC]; 141 uint16_t qsize; 142 uint32_t qmask; 143 uint32_t qpos; 144 struct rte_mbuf *pkt; 145 146 /* WRR */ 147 uint16_t wrr_tokens[RTE_SCHED_BE_QUEUES_PER_PIPE]; 148 uint16_t wrr_mask[RTE_SCHED_BE_QUEUES_PER_PIPE]; 149 uint8_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 150 }; 151 152 struct rte_sched_subport { 153 /* Token bucket (TB) */ 154 uint64_t tb_time; /* time of last update */ 155 uint64_t tb_credits; 156 157 /* Traffic classes (TCs) */ 158 uint64_t tc_time; /* time of next update */ 159 uint64_t tc_credits[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 160 161 /* TC oversubscription */ 162 uint64_t tc_ov_wm; 163 uint64_t tc_ov_wm_min; 164 uint64_t tc_ov_wm_max; 165 uint8_t tc_ov_period_id; 166 uint8_t tc_ov; 167 uint32_t tc_ov_n; 168 double tc_ov_rate; 169 170 /* Statistics */ 171 struct rte_sched_subport_stats stats __rte_cache_aligned; 172 173 /* subport profile */ 174 uint32_t profile; 175 /* Subport pipes */ 176 uint32_t n_pipes_per_subport_enabled; 177 uint32_t n_pipe_profiles; 178 uint32_t n_max_pipe_profiles; 179 180 /* Pipe best-effort TC rate */ 181 uint64_t pipe_tc_be_rate_max; 182 183 /* Pipe queues size */ 184 uint16_t qsize[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 185 186 #ifdef RTE_SCHED_RED 187 struct rte_red_config red_config[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE][RTE_COLORS]; 188 #endif 189 190 /* Scheduling loop detection */ 191 uint32_t pipe_loop; 192 uint32_t pipe_exhaustion; 193 194 /* Bitmap */ 195 struct rte_bitmap *bmp; 196 uint32_t grinder_base_bmp_pos[RTE_SCHED_PORT_N_GRINDERS] __rte_aligned_16; 197 198 /* Grinders */ 199 struct rte_sched_grinder grinder[RTE_SCHED_PORT_N_GRINDERS]; 200 uint32_t busy_grinders; 201 202 /* Queue base calculation */ 203 uint32_t qsize_add[RTE_SCHED_QUEUES_PER_PIPE]; 204 uint32_t qsize_sum; 205 206 struct rte_sched_pipe *pipe; 207 struct rte_sched_queue *queue; 208 struct rte_sched_queue_extra *queue_extra; 209 struct rte_sched_pipe_profile *pipe_profiles; 210 uint8_t *bmp_array; 211 struct rte_mbuf **queue_array; 212 uint8_t memory[0] __rte_cache_aligned; 213 } __rte_cache_aligned; 214 215 struct rte_sched_port { 216 /* User parameters */ 217 uint32_t n_subports_per_port; 218 uint32_t n_pipes_per_subport; 219 uint32_t n_pipes_per_subport_log2; 220 uint16_t pipe_queue[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 221 uint8_t pipe_tc[RTE_SCHED_QUEUES_PER_PIPE]; 222 uint8_t tc_queue[RTE_SCHED_QUEUES_PER_PIPE]; 223 uint32_t n_subport_profiles; 224 uint32_t n_max_subport_profiles; 225 uint64_t rate; 226 uint32_t mtu; 227 uint32_t frame_overhead; 228 int socket; 229 230 /* Timing */ 231 uint64_t time_cpu_cycles; /* Current CPU time measured in CPU cyles */ 232 uint64_t time_cpu_bytes; /* Current CPU time measured in bytes */ 233 uint64_t time; /* Current NIC TX time measured in bytes */ 234 struct rte_reciprocal inv_cycles_per_byte; /* CPU cycles per byte */ 235 uint64_t cycles_per_byte; 236 237 /* Grinders */ 238 struct rte_mbuf **pkts_out; 239 uint32_t n_pkts_out; 240 uint32_t subport_id; 241 242 /* Large data structures */ 243 struct rte_sched_subport_profile *subport_profiles; 244 struct rte_sched_subport *subports[0] __rte_cache_aligned; 245 } __rte_cache_aligned; 246 247 enum rte_sched_subport_array { 248 e_RTE_SCHED_SUBPORT_ARRAY_PIPE = 0, 249 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE, 250 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA, 251 e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES, 252 e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY, 253 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY, 254 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL, 255 }; 256 257 static inline uint32_t 258 rte_sched_subport_pipe_queues(struct rte_sched_subport *subport) 259 { 260 return RTE_SCHED_QUEUES_PER_PIPE * subport->n_pipes_per_subport_enabled; 261 } 262 263 static inline struct rte_mbuf ** 264 rte_sched_subport_pipe_qbase(struct rte_sched_subport *subport, uint32_t qindex) 265 { 266 uint32_t pindex = qindex >> 4; 267 uint32_t qpos = qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1); 268 269 return (subport->queue_array + pindex * 270 subport->qsize_sum + subport->qsize_add[qpos]); 271 } 272 273 static inline uint16_t 274 rte_sched_subport_pipe_qsize(struct rte_sched_port *port, 275 struct rte_sched_subport *subport, uint32_t qindex) 276 { 277 uint32_t tc = port->pipe_tc[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 278 279 return subport->qsize[tc]; 280 } 281 282 static inline uint32_t 283 rte_sched_port_queues_per_port(struct rte_sched_port *port) 284 { 285 uint32_t n_queues = 0, i; 286 287 for (i = 0; i < port->n_subports_per_port; i++) 288 n_queues += rte_sched_subport_pipe_queues(port->subports[i]); 289 290 return n_queues; 291 } 292 293 static inline uint16_t 294 rte_sched_port_pipe_queue(struct rte_sched_port *port, uint32_t traffic_class) 295 { 296 uint16_t pipe_queue = port->pipe_queue[traffic_class]; 297 298 return pipe_queue; 299 } 300 301 static inline uint8_t 302 rte_sched_port_pipe_tc(struct rte_sched_port *port, uint32_t qindex) 303 { 304 uint8_t pipe_tc = port->pipe_tc[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 305 306 return pipe_tc; 307 } 308 309 static inline uint8_t 310 rte_sched_port_tc_queue(struct rte_sched_port *port, uint32_t qindex) 311 { 312 uint8_t tc_queue = port->tc_queue[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 313 314 return tc_queue; 315 } 316 317 static int 318 pipe_profile_check(struct rte_sched_pipe_params *params, 319 uint64_t rate, uint16_t *qsize) 320 { 321 uint32_t i; 322 323 /* Pipe parameters */ 324 if (params == NULL) { 325 RTE_LOG(ERR, SCHED, 326 "%s: Incorrect value for parameter params\n", __func__); 327 return -EINVAL; 328 } 329 330 /* TB rate: non-zero, not greater than port rate */ 331 if (params->tb_rate == 0 || 332 params->tb_rate > rate) { 333 RTE_LOG(ERR, SCHED, 334 "%s: Incorrect value for tb rate\n", __func__); 335 return -EINVAL; 336 } 337 338 /* TB size: non-zero */ 339 if (params->tb_size == 0) { 340 RTE_LOG(ERR, SCHED, 341 "%s: Incorrect value for tb size\n", __func__); 342 return -EINVAL; 343 } 344 345 /* TC rate: non-zero if qsize non-zero, less than pipe rate */ 346 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 347 if ((qsize[i] == 0 && params->tc_rate[i] != 0) || 348 (qsize[i] != 0 && (params->tc_rate[i] == 0 || 349 params->tc_rate[i] > params->tb_rate))) { 350 RTE_LOG(ERR, SCHED, 351 "%s: Incorrect value for qsize or tc_rate\n", __func__); 352 return -EINVAL; 353 } 354 } 355 356 if (params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE] == 0 || 357 qsize[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 358 RTE_LOG(ERR, SCHED, 359 "%s: Incorrect value for be traffic class rate\n", __func__); 360 return -EINVAL; 361 } 362 363 /* TC period: non-zero */ 364 if (params->tc_period == 0) { 365 RTE_LOG(ERR, SCHED, 366 "%s: Incorrect value for tc period\n", __func__); 367 return -EINVAL; 368 } 369 370 /* Best effort tc oversubscription weight: non-zero */ 371 if (params->tc_ov_weight == 0) { 372 RTE_LOG(ERR, SCHED, 373 "%s: Incorrect value for tc ov weight\n", __func__); 374 return -EINVAL; 375 } 376 377 /* Queue WRR weights: non-zero */ 378 for (i = 0; i < RTE_SCHED_BE_QUEUES_PER_PIPE; i++) { 379 if (params->wrr_weights[i] == 0) { 380 RTE_LOG(ERR, SCHED, 381 "%s: Incorrect value for wrr weight\n", __func__); 382 return -EINVAL; 383 } 384 } 385 386 return 0; 387 } 388 389 static int 390 subport_profile_check(struct rte_sched_subport_profile_params *params, 391 uint64_t rate) 392 { 393 uint32_t i; 394 395 /* Check user parameters */ 396 if (params == NULL) { 397 RTE_LOG(ERR, SCHED, "%s: " 398 "Incorrect value for parameter params\n", __func__); 399 return -EINVAL; 400 } 401 402 if (params->tb_rate == 0 || params->tb_rate > rate) { 403 RTE_LOG(ERR, SCHED, "%s: " 404 "Incorrect value for tb rate\n", __func__); 405 return -EINVAL; 406 } 407 408 if (params->tb_size == 0) { 409 RTE_LOG(ERR, SCHED, "%s: " 410 "Incorrect value for tb size\n", __func__); 411 return -EINVAL; 412 } 413 414 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 415 uint64_t tc_rate = params->tc_rate[i]; 416 417 if (tc_rate == 0 || (tc_rate > params->tb_rate)) { 418 RTE_LOG(ERR, SCHED, "%s: " 419 "Incorrect value for tc rate\n", __func__); 420 return -EINVAL; 421 } 422 } 423 424 if (params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 425 RTE_LOG(ERR, SCHED, "%s: " 426 "Incorrect tc rate(best effort)\n", __func__); 427 return -EINVAL; 428 } 429 430 if (params->tc_period == 0) { 431 RTE_LOG(ERR, SCHED, "%s: " 432 "Incorrect value for tc period\n", __func__); 433 return -EINVAL; 434 } 435 436 return 0; 437 } 438 439 static int 440 rte_sched_port_check_params(struct rte_sched_port_params *params) 441 { 442 uint32_t i; 443 444 if (params == NULL) { 445 RTE_LOG(ERR, SCHED, 446 "%s: Incorrect value for parameter params\n", __func__); 447 return -EINVAL; 448 } 449 450 /* socket */ 451 if (params->socket < 0) { 452 RTE_LOG(ERR, SCHED, 453 "%s: Incorrect value for socket id\n", __func__); 454 return -EINVAL; 455 } 456 457 /* rate */ 458 if (params->rate == 0) { 459 RTE_LOG(ERR, SCHED, 460 "%s: Incorrect value for rate\n", __func__); 461 return -EINVAL; 462 } 463 464 /* mtu */ 465 if (params->mtu == 0) { 466 RTE_LOG(ERR, SCHED, 467 "%s: Incorrect value for mtu\n", __func__); 468 return -EINVAL; 469 } 470 471 /* n_subports_per_port: non-zero, limited to 16 bits, power of 2 */ 472 if (params->n_subports_per_port == 0 || 473 params->n_subports_per_port > 1u << 16 || 474 !rte_is_power_of_2(params->n_subports_per_port)) { 475 RTE_LOG(ERR, SCHED, 476 "%s: Incorrect value for number of subports\n", __func__); 477 return -EINVAL; 478 } 479 480 if (params->subport_profiles == NULL || 481 params->n_subport_profiles == 0 || 482 params->n_max_subport_profiles == 0 || 483 params->n_subport_profiles > params->n_max_subport_profiles) { 484 RTE_LOG(ERR, SCHED, 485 "%s: Incorrect value for subport profiles\n", __func__); 486 return -EINVAL; 487 } 488 489 for (i = 0; i < params->n_subport_profiles; i++) { 490 struct rte_sched_subport_profile_params *p = 491 params->subport_profiles + i; 492 int status; 493 494 status = subport_profile_check(p, params->rate); 495 if (status != 0) { 496 RTE_LOG(ERR, SCHED, 497 "%s: subport profile check failed(%d)\n", 498 __func__, status); 499 return -EINVAL; 500 } 501 } 502 503 /* n_pipes_per_subport: non-zero, power of 2 */ 504 if (params->n_pipes_per_subport == 0 || 505 !rte_is_power_of_2(params->n_pipes_per_subport)) { 506 RTE_LOG(ERR, SCHED, 507 "%s: Incorrect value for maximum pipes number\n", __func__); 508 return -EINVAL; 509 } 510 511 return 0; 512 } 513 514 static uint32_t 515 rte_sched_subport_get_array_base(struct rte_sched_subport_params *params, 516 enum rte_sched_subport_array array) 517 { 518 uint32_t n_pipes_per_subport = params->n_pipes_per_subport_enabled; 519 uint32_t n_subport_pipe_queues = 520 RTE_SCHED_QUEUES_PER_PIPE * n_pipes_per_subport; 521 522 uint32_t size_pipe = n_pipes_per_subport * sizeof(struct rte_sched_pipe); 523 uint32_t size_queue = 524 n_subport_pipe_queues * sizeof(struct rte_sched_queue); 525 uint32_t size_queue_extra 526 = n_subport_pipe_queues * sizeof(struct rte_sched_queue_extra); 527 uint32_t size_pipe_profiles = params->n_max_pipe_profiles * 528 sizeof(struct rte_sched_pipe_profile); 529 uint32_t size_bmp_array = 530 rte_bitmap_get_memory_footprint(n_subport_pipe_queues); 531 uint32_t size_per_pipe_queue_array, size_queue_array; 532 533 uint32_t base, i; 534 535 size_per_pipe_queue_array = 0; 536 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 537 if (i < RTE_SCHED_TRAFFIC_CLASS_BE) 538 size_per_pipe_queue_array += 539 params->qsize[i] * sizeof(struct rte_mbuf *); 540 else 541 size_per_pipe_queue_array += RTE_SCHED_MAX_QUEUES_PER_TC * 542 params->qsize[i] * sizeof(struct rte_mbuf *); 543 } 544 size_queue_array = n_pipes_per_subport * size_per_pipe_queue_array; 545 546 base = 0; 547 548 if (array == e_RTE_SCHED_SUBPORT_ARRAY_PIPE) 549 return base; 550 base += RTE_CACHE_LINE_ROUNDUP(size_pipe); 551 552 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE) 553 return base; 554 base += RTE_CACHE_LINE_ROUNDUP(size_queue); 555 556 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA) 557 return base; 558 base += RTE_CACHE_LINE_ROUNDUP(size_queue_extra); 559 560 if (array == e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES) 561 return base; 562 base += RTE_CACHE_LINE_ROUNDUP(size_pipe_profiles); 563 564 if (array == e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY) 565 return base; 566 base += RTE_CACHE_LINE_ROUNDUP(size_bmp_array); 567 568 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY) 569 return base; 570 base += RTE_CACHE_LINE_ROUNDUP(size_queue_array); 571 572 return base; 573 } 574 575 static void 576 rte_sched_subport_config_qsize(struct rte_sched_subport *subport) 577 { 578 uint32_t i; 579 580 subport->qsize_add[0] = 0; 581 582 /* Strict prority traffic class */ 583 for (i = 1; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 584 subport->qsize_add[i] = subport->qsize_add[i-1] + subport->qsize[i-1]; 585 586 /* Best-effort traffic class */ 587 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 1] = 588 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE] + 589 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 590 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 2] = 591 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 1] + 592 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 593 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 3] = 594 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 2] + 595 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 596 597 subport->qsize_sum = subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 3] + 598 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 599 } 600 601 static void 602 rte_sched_port_log_pipe_profile(struct rte_sched_subport *subport, uint32_t i) 603 { 604 struct rte_sched_pipe_profile *p = subport->pipe_profiles + i; 605 606 RTE_LOG(DEBUG, SCHED, "Low level config for pipe profile %u:\n" 607 " Token bucket: period = %"PRIu64", credits per period = %"PRIu64", size = %"PRIu64"\n" 608 " Traffic classes: period = %"PRIu64",\n" 609 " credits per period = [%"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 610 ", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 611 ", %"PRIu64", %"PRIu64", %"PRIu64"]\n" 612 " Best-effort traffic class oversubscription: weight = %hhu\n" 613 " WRR cost: [%hhu, %hhu, %hhu, %hhu]\n", 614 i, 615 616 /* Token bucket */ 617 p->tb_period, 618 p->tb_credits_per_period, 619 p->tb_size, 620 621 /* Traffic classes */ 622 p->tc_period, 623 p->tc_credits_per_period[0], 624 p->tc_credits_per_period[1], 625 p->tc_credits_per_period[2], 626 p->tc_credits_per_period[3], 627 p->tc_credits_per_period[4], 628 p->tc_credits_per_period[5], 629 p->tc_credits_per_period[6], 630 p->tc_credits_per_period[7], 631 p->tc_credits_per_period[8], 632 p->tc_credits_per_period[9], 633 p->tc_credits_per_period[10], 634 p->tc_credits_per_period[11], 635 p->tc_credits_per_period[12], 636 637 /* Best-effort traffic class oversubscription */ 638 p->tc_ov_weight, 639 640 /* WRR */ 641 p->wrr_cost[0], p->wrr_cost[1], p->wrr_cost[2], p->wrr_cost[3]); 642 } 643 644 static void 645 rte_sched_port_log_subport_profile(struct rte_sched_port *port, uint32_t i) 646 { 647 struct rte_sched_subport_profile *p = port->subport_profiles + i; 648 649 RTE_LOG(DEBUG, SCHED, "Low level config for subport profile %u:\n" 650 "Token bucket: period = %"PRIu64", credits per period = %"PRIu64"," 651 "size = %"PRIu64"\n" 652 "Traffic classes: period = %"PRIu64",\n" 653 "credits per period = [%"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 654 " %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 655 " %"PRIu64", %"PRIu64", %"PRIu64"]\n", 656 i, 657 658 /* Token bucket */ 659 p->tb_period, 660 p->tb_credits_per_period, 661 p->tb_size, 662 663 /* Traffic classes */ 664 p->tc_period, 665 p->tc_credits_per_period[0], 666 p->tc_credits_per_period[1], 667 p->tc_credits_per_period[2], 668 p->tc_credits_per_period[3], 669 p->tc_credits_per_period[4], 670 p->tc_credits_per_period[5], 671 p->tc_credits_per_period[6], 672 p->tc_credits_per_period[7], 673 p->tc_credits_per_period[8], 674 p->tc_credits_per_period[9], 675 p->tc_credits_per_period[10], 676 p->tc_credits_per_period[11], 677 p->tc_credits_per_period[12]); 678 } 679 680 static inline uint64_t 681 rte_sched_time_ms_to_bytes(uint64_t time_ms, uint64_t rate) 682 { 683 uint64_t time = time_ms; 684 685 time = (time * rate) / 1000; 686 687 return time; 688 } 689 690 static void 691 rte_sched_pipe_profile_convert(struct rte_sched_subport *subport, 692 struct rte_sched_pipe_params *src, 693 struct rte_sched_pipe_profile *dst, 694 uint64_t rate) 695 { 696 uint32_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 697 uint32_t lcd1, lcd2, lcd; 698 uint32_t i; 699 700 /* Token Bucket */ 701 if (src->tb_rate == rate) { 702 dst->tb_credits_per_period = 1; 703 dst->tb_period = 1; 704 } else { 705 double tb_rate = (double) src->tb_rate 706 / (double) rate; 707 double d = RTE_SCHED_TB_RATE_CONFIG_ERR; 708 709 rte_approx_64(tb_rate, d, &dst->tb_credits_per_period, 710 &dst->tb_period); 711 } 712 713 dst->tb_size = src->tb_size; 714 715 /* Traffic Classes */ 716 dst->tc_period = rte_sched_time_ms_to_bytes(src->tc_period, 717 rate); 718 719 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 720 if (subport->qsize[i]) 721 dst->tc_credits_per_period[i] 722 = rte_sched_time_ms_to_bytes(src->tc_period, 723 src->tc_rate[i]); 724 725 dst->tc_ov_weight = src->tc_ov_weight; 726 727 /* WRR queues */ 728 wrr_cost[0] = src->wrr_weights[0]; 729 wrr_cost[1] = src->wrr_weights[1]; 730 wrr_cost[2] = src->wrr_weights[2]; 731 wrr_cost[3] = src->wrr_weights[3]; 732 733 lcd1 = rte_get_lcd(wrr_cost[0], wrr_cost[1]); 734 lcd2 = rte_get_lcd(wrr_cost[2], wrr_cost[3]); 735 lcd = rte_get_lcd(lcd1, lcd2); 736 737 wrr_cost[0] = lcd / wrr_cost[0]; 738 wrr_cost[1] = lcd / wrr_cost[1]; 739 wrr_cost[2] = lcd / wrr_cost[2]; 740 wrr_cost[3] = lcd / wrr_cost[3]; 741 742 dst->wrr_cost[0] = (uint8_t) wrr_cost[0]; 743 dst->wrr_cost[1] = (uint8_t) wrr_cost[1]; 744 dst->wrr_cost[2] = (uint8_t) wrr_cost[2]; 745 dst->wrr_cost[3] = (uint8_t) wrr_cost[3]; 746 } 747 748 static void 749 rte_sched_subport_profile_convert(struct rte_sched_subport_profile_params *src, 750 struct rte_sched_subport_profile *dst, 751 uint64_t rate) 752 { 753 uint32_t i; 754 755 /* Token Bucket */ 756 if (src->tb_rate == rate) { 757 dst->tb_credits_per_period = 1; 758 dst->tb_period = 1; 759 } else { 760 double tb_rate = (double) src->tb_rate 761 / (double) rate; 762 double d = RTE_SCHED_TB_RATE_CONFIG_ERR; 763 764 rte_approx_64(tb_rate, d, &dst->tb_credits_per_period, 765 &dst->tb_period); 766 } 767 768 dst->tb_size = src->tb_size; 769 770 /* Traffic Classes */ 771 dst->tc_period = rte_sched_time_ms_to_bytes(src->tc_period, rate); 772 773 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 774 dst->tc_credits_per_period[i] 775 = rte_sched_time_ms_to_bytes(src->tc_period, 776 src->tc_rate[i]); 777 } 778 779 static void 780 rte_sched_subport_config_pipe_profile_table(struct rte_sched_subport *subport, 781 struct rte_sched_subport_params *params, uint64_t rate) 782 { 783 uint32_t i; 784 785 for (i = 0; i < subport->n_pipe_profiles; i++) { 786 struct rte_sched_pipe_params *src = params->pipe_profiles + i; 787 struct rte_sched_pipe_profile *dst = subport->pipe_profiles + i; 788 789 rte_sched_pipe_profile_convert(subport, src, dst, rate); 790 rte_sched_port_log_pipe_profile(subport, i); 791 } 792 793 subport->pipe_tc_be_rate_max = 0; 794 for (i = 0; i < subport->n_pipe_profiles; i++) { 795 struct rte_sched_pipe_params *src = params->pipe_profiles + i; 796 uint64_t pipe_tc_be_rate = src->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]; 797 798 if (subport->pipe_tc_be_rate_max < pipe_tc_be_rate) 799 subport->pipe_tc_be_rate_max = pipe_tc_be_rate; 800 } 801 } 802 803 static void 804 rte_sched_port_config_subport_profile_table(struct rte_sched_port *port, 805 struct rte_sched_port_params *params, 806 uint64_t rate) 807 { 808 uint32_t i; 809 810 for (i = 0; i < port->n_subport_profiles; i++) { 811 struct rte_sched_subport_profile_params *src 812 = params->subport_profiles + i; 813 struct rte_sched_subport_profile *dst 814 = port->subport_profiles + i; 815 816 rte_sched_subport_profile_convert(src, dst, rate); 817 rte_sched_port_log_subport_profile(port, i); 818 } 819 } 820 821 static int 822 rte_sched_subport_check_params(struct rte_sched_subport_params *params, 823 uint32_t n_max_pipes_per_subport, 824 uint64_t rate) 825 { 826 uint32_t i; 827 828 /* Check user parameters */ 829 if (params == NULL) { 830 RTE_LOG(ERR, SCHED, 831 "%s: Incorrect value for parameter params\n", __func__); 832 return -EINVAL; 833 } 834 835 /* qsize: if non-zero, power of 2, 836 * no bigger than 32K (due to 16-bit read/write pointers) 837 */ 838 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 839 uint16_t qsize = params->qsize[i]; 840 841 if (qsize != 0 && !rte_is_power_of_2(qsize)) { 842 RTE_LOG(ERR, SCHED, 843 "%s: Incorrect value for qsize\n", __func__); 844 return -EINVAL; 845 } 846 } 847 848 if (params->qsize[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 849 RTE_LOG(ERR, SCHED, "%s: Incorrect qsize\n", __func__); 850 return -EINVAL; 851 } 852 853 /* n_pipes_per_subport: non-zero, power of 2 */ 854 if (params->n_pipes_per_subport_enabled == 0 || 855 params->n_pipes_per_subport_enabled > n_max_pipes_per_subport || 856 !rte_is_power_of_2(params->n_pipes_per_subport_enabled)) { 857 RTE_LOG(ERR, SCHED, 858 "%s: Incorrect value for pipes number\n", __func__); 859 return -EINVAL; 860 } 861 862 /* pipe_profiles and n_pipe_profiles */ 863 if (params->pipe_profiles == NULL || 864 params->n_pipe_profiles == 0 || 865 params->n_max_pipe_profiles == 0 || 866 params->n_pipe_profiles > params->n_max_pipe_profiles) { 867 RTE_LOG(ERR, SCHED, 868 "%s: Incorrect value for pipe profiles\n", __func__); 869 return -EINVAL; 870 } 871 872 for (i = 0; i < params->n_pipe_profiles; i++) { 873 struct rte_sched_pipe_params *p = params->pipe_profiles + i; 874 int status; 875 876 status = pipe_profile_check(p, rate, ¶ms->qsize[0]); 877 if (status != 0) { 878 RTE_LOG(ERR, SCHED, 879 "%s: Pipe profile check failed(%d)\n", __func__, status); 880 return -EINVAL; 881 } 882 } 883 884 return 0; 885 } 886 887 uint32_t 888 rte_sched_port_get_memory_footprint(struct rte_sched_port_params *port_params, 889 struct rte_sched_subport_params **subport_params) 890 { 891 uint32_t size0 = 0, size1 = 0, i; 892 int status; 893 894 status = rte_sched_port_check_params(port_params); 895 if (status != 0) { 896 RTE_LOG(ERR, SCHED, 897 "%s: Port scheduler port params check failed (%d)\n", 898 __func__, status); 899 900 return 0; 901 } 902 903 for (i = 0; i < port_params->n_subports_per_port; i++) { 904 struct rte_sched_subport_params *sp = subport_params[i]; 905 906 status = rte_sched_subport_check_params(sp, 907 port_params->n_pipes_per_subport, 908 port_params->rate); 909 if (status != 0) { 910 RTE_LOG(ERR, SCHED, 911 "%s: Port scheduler subport params check failed (%d)\n", 912 __func__, status); 913 914 return 0; 915 } 916 } 917 918 size0 = sizeof(struct rte_sched_port); 919 920 for (i = 0; i < port_params->n_subports_per_port; i++) { 921 struct rte_sched_subport_params *sp = subport_params[i]; 922 923 size1 += rte_sched_subport_get_array_base(sp, 924 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL); 925 } 926 927 return size0 + size1; 928 } 929 930 struct rte_sched_port * 931 rte_sched_port_config(struct rte_sched_port_params *params) 932 { 933 struct rte_sched_port *port = NULL; 934 uint32_t size0, size1, size2; 935 uint32_t cycles_per_byte; 936 uint32_t i, j; 937 int status; 938 939 status = rte_sched_port_check_params(params); 940 if (status != 0) { 941 RTE_LOG(ERR, SCHED, 942 "%s: Port scheduler params check failed (%d)\n", 943 __func__, status); 944 return NULL; 945 } 946 947 size0 = sizeof(struct rte_sched_port); 948 size1 = params->n_subports_per_port * sizeof(struct rte_sched_subport *); 949 size2 = params->n_max_subport_profiles * 950 sizeof(struct rte_sched_subport_profile); 951 952 /* Allocate memory to store the data structures */ 953 port = rte_zmalloc_socket("qos_params", size0 + size1, 954 RTE_CACHE_LINE_SIZE, params->socket); 955 if (port == NULL) { 956 RTE_LOG(ERR, SCHED, "%s: Memory allocation fails\n", __func__); 957 958 return NULL; 959 } 960 961 /* Allocate memory to store the subport profile */ 962 port->subport_profiles = rte_zmalloc_socket("subport_profile", size2, 963 RTE_CACHE_LINE_SIZE, params->socket); 964 if (port->subport_profiles == NULL) { 965 RTE_LOG(ERR, SCHED, "%s: Memory allocation fails\n", __func__); 966 rte_free(port); 967 return NULL; 968 } 969 970 /* User parameters */ 971 port->n_subports_per_port = params->n_subports_per_port; 972 port->n_subport_profiles = params->n_subport_profiles; 973 port->n_max_subport_profiles = params->n_max_subport_profiles; 974 port->n_pipes_per_subport = params->n_pipes_per_subport; 975 port->n_pipes_per_subport_log2 = 976 __builtin_ctz(params->n_pipes_per_subport); 977 port->socket = params->socket; 978 979 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 980 port->pipe_queue[i] = i; 981 982 for (i = 0, j = 0; i < RTE_SCHED_QUEUES_PER_PIPE; i++) { 983 port->pipe_tc[i] = j; 984 985 if (j < RTE_SCHED_TRAFFIC_CLASS_BE) 986 j++; 987 } 988 989 for (i = 0, j = 0; i < RTE_SCHED_QUEUES_PER_PIPE; i++) { 990 port->tc_queue[i] = j; 991 992 if (i >= RTE_SCHED_TRAFFIC_CLASS_BE) 993 j++; 994 } 995 port->rate = params->rate; 996 port->mtu = params->mtu + params->frame_overhead; 997 port->frame_overhead = params->frame_overhead; 998 999 /* Timing */ 1000 port->time_cpu_cycles = rte_get_tsc_cycles(); 1001 port->time_cpu_bytes = 0; 1002 port->time = 0; 1003 1004 /* Subport profile table */ 1005 rte_sched_port_config_subport_profile_table(port, params, port->rate); 1006 1007 cycles_per_byte = (rte_get_tsc_hz() << RTE_SCHED_TIME_SHIFT) 1008 / params->rate; 1009 port->inv_cycles_per_byte = rte_reciprocal_value(cycles_per_byte); 1010 port->cycles_per_byte = cycles_per_byte; 1011 1012 /* Grinders */ 1013 port->pkts_out = NULL; 1014 port->n_pkts_out = 0; 1015 port->subport_id = 0; 1016 1017 return port; 1018 } 1019 1020 static inline void 1021 rte_sched_subport_free(struct rte_sched_port *port, 1022 struct rte_sched_subport *subport) 1023 { 1024 uint32_t n_subport_pipe_queues; 1025 uint32_t qindex; 1026 1027 if (subport == NULL) 1028 return; 1029 1030 n_subport_pipe_queues = rte_sched_subport_pipe_queues(subport); 1031 1032 /* Free enqueued mbufs */ 1033 for (qindex = 0; qindex < n_subport_pipe_queues; qindex++) { 1034 struct rte_mbuf **mbufs = 1035 rte_sched_subport_pipe_qbase(subport, qindex); 1036 uint16_t qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 1037 if (qsize != 0) { 1038 struct rte_sched_queue *queue = subport->queue + qindex; 1039 uint16_t qr = queue->qr & (qsize - 1); 1040 uint16_t qw = queue->qw & (qsize - 1); 1041 1042 for (; qr != qw; qr = (qr + 1) & (qsize - 1)) 1043 rte_pktmbuf_free(mbufs[qr]); 1044 } 1045 } 1046 1047 rte_free(subport); 1048 } 1049 1050 void 1051 rte_sched_port_free(struct rte_sched_port *port) 1052 { 1053 uint32_t i; 1054 1055 /* Check user parameters */ 1056 if (port == NULL) 1057 return; 1058 1059 for (i = 0; i < port->n_subports_per_port; i++) 1060 rte_sched_subport_free(port, port->subports[i]); 1061 1062 rte_free(port->subport_profiles); 1063 rte_free(port); 1064 } 1065 1066 static void 1067 rte_sched_free_memory(struct rte_sched_port *port, uint32_t n_subports) 1068 { 1069 uint32_t i; 1070 1071 for (i = 0; i < n_subports; i++) { 1072 struct rte_sched_subport *subport = port->subports[i]; 1073 1074 rte_sched_subport_free(port, subport); 1075 } 1076 1077 rte_free(port->subport_profiles); 1078 rte_free(port); 1079 } 1080 1081 int 1082 rte_sched_subport_config(struct rte_sched_port *port, 1083 uint32_t subport_id, 1084 struct rte_sched_subport_params *params, 1085 uint32_t subport_profile_id) 1086 { 1087 struct rte_sched_subport *s = NULL; 1088 uint32_t n_subports = subport_id; 1089 struct rte_sched_subport_profile *profile; 1090 uint32_t n_subport_pipe_queues, i; 1091 uint32_t size0, size1, bmp_mem_size; 1092 int status; 1093 int ret; 1094 1095 /* Check user parameters */ 1096 if (port == NULL) { 1097 RTE_LOG(ERR, SCHED, 1098 "%s: Incorrect value for parameter port\n", __func__); 1099 return 0; 1100 } 1101 1102 if (subport_id >= port->n_subports_per_port) { 1103 RTE_LOG(ERR, SCHED, 1104 "%s: Incorrect value for subport id\n", __func__); 1105 ret = -EINVAL; 1106 goto out; 1107 } 1108 1109 if (subport_profile_id >= port->n_max_subport_profiles) { 1110 RTE_LOG(ERR, SCHED, "%s: " 1111 "Number of subport profile exceeds the max limit\n", 1112 __func__); 1113 ret = -EINVAL; 1114 goto out; 1115 } 1116 1117 /** Memory is allocated only on first invocation of the api for a 1118 * given subport. Subsequent invocation on same subport will just 1119 * update subport bandwidth parameter. 1120 **/ 1121 if (port->subports[subport_id] == NULL) { 1122 1123 status = rte_sched_subport_check_params(params, 1124 port->n_pipes_per_subport, 1125 port->rate); 1126 if (status != 0) { 1127 RTE_LOG(NOTICE, SCHED, 1128 "%s: Port scheduler params check failed (%d)\n", 1129 __func__, status); 1130 ret = -EINVAL; 1131 goto out; 1132 } 1133 1134 /* Determine the amount of memory to allocate */ 1135 size0 = sizeof(struct rte_sched_subport); 1136 size1 = rte_sched_subport_get_array_base(params, 1137 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL); 1138 1139 /* Allocate memory to store the data structures */ 1140 s = rte_zmalloc_socket("subport_params", size0 + size1, 1141 RTE_CACHE_LINE_SIZE, port->socket); 1142 if (s == NULL) { 1143 RTE_LOG(ERR, SCHED, 1144 "%s: Memory allocation fails\n", __func__); 1145 ret = -ENOMEM; 1146 goto out; 1147 } 1148 1149 n_subports++; 1150 1151 subport_profile_id = 0; 1152 1153 /* Port */ 1154 port->subports[subport_id] = s; 1155 1156 s->tb_time = port->time; 1157 1158 /* compile time checks */ 1159 RTE_BUILD_BUG_ON(RTE_SCHED_PORT_N_GRINDERS == 0); 1160 RTE_BUILD_BUG_ON(RTE_SCHED_PORT_N_GRINDERS & 1161 (RTE_SCHED_PORT_N_GRINDERS - 1)); 1162 1163 /* User parameters */ 1164 s->n_pipes_per_subport_enabled = 1165 params->n_pipes_per_subport_enabled; 1166 memcpy(s->qsize, params->qsize, sizeof(params->qsize)); 1167 s->n_pipe_profiles = params->n_pipe_profiles; 1168 s->n_max_pipe_profiles = params->n_max_pipe_profiles; 1169 1170 #ifdef RTE_SCHED_RED 1171 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 1172 uint32_t j; 1173 1174 for (j = 0; j < RTE_COLORS; j++) { 1175 /* if min/max are both zero, then RED is disabled */ 1176 if ((params->red_params[i][j].min_th | 1177 params->red_params[i][j].max_th) == 0) { 1178 continue; 1179 } 1180 1181 if (rte_red_config_init(&s->red_config[i][j], 1182 params->red_params[i][j].wq_log2, 1183 params->red_params[i][j].min_th, 1184 params->red_params[i][j].max_th, 1185 params->red_params[i][j].maxp_inv) != 0) { 1186 RTE_LOG(NOTICE, SCHED, 1187 "%s: RED configuration init fails\n", 1188 __func__); 1189 ret = -EINVAL; 1190 goto out; 1191 } 1192 } 1193 } 1194 #endif 1195 1196 /* Scheduling loop detection */ 1197 s->pipe_loop = RTE_SCHED_PIPE_INVALID; 1198 s->pipe_exhaustion = 0; 1199 1200 /* Grinders */ 1201 s->busy_grinders = 0; 1202 1203 /* Queue base calculation */ 1204 rte_sched_subport_config_qsize(s); 1205 1206 /* Large data structures */ 1207 s->pipe = (struct rte_sched_pipe *) 1208 (s->memory + rte_sched_subport_get_array_base(params, 1209 e_RTE_SCHED_SUBPORT_ARRAY_PIPE)); 1210 s->queue = (struct rte_sched_queue *) 1211 (s->memory + rte_sched_subport_get_array_base(params, 1212 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE)); 1213 s->queue_extra = (struct rte_sched_queue_extra *) 1214 (s->memory + rte_sched_subport_get_array_base(params, 1215 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA)); 1216 s->pipe_profiles = (struct rte_sched_pipe_profile *) 1217 (s->memory + rte_sched_subport_get_array_base(params, 1218 e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES)); 1219 s->bmp_array = s->memory + rte_sched_subport_get_array_base( 1220 params, e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY); 1221 s->queue_array = (struct rte_mbuf **) 1222 (s->memory + rte_sched_subport_get_array_base(params, 1223 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY)); 1224 1225 /* Pipe profile table */ 1226 rte_sched_subport_config_pipe_profile_table(s, params, 1227 port->rate); 1228 1229 /* Bitmap */ 1230 n_subport_pipe_queues = rte_sched_subport_pipe_queues(s); 1231 bmp_mem_size = rte_bitmap_get_memory_footprint( 1232 n_subport_pipe_queues); 1233 s->bmp = rte_bitmap_init(n_subport_pipe_queues, s->bmp_array, 1234 bmp_mem_size); 1235 if (s->bmp == NULL) { 1236 RTE_LOG(ERR, SCHED, 1237 "%s: Subport bitmap init error\n", __func__); 1238 ret = -EINVAL; 1239 goto out; 1240 } 1241 1242 for (i = 0; i < RTE_SCHED_PORT_N_GRINDERS; i++) 1243 s->grinder_base_bmp_pos[i] = RTE_SCHED_PIPE_INVALID; 1244 1245 #ifdef RTE_SCHED_SUBPORT_TC_OV 1246 /* TC oversubscription */ 1247 s->tc_ov_wm_min = port->mtu; 1248 s->tc_ov_period_id = 0; 1249 s->tc_ov = 0; 1250 s->tc_ov_n = 0; 1251 s->tc_ov_rate = 0; 1252 #endif 1253 } 1254 1255 { 1256 /* update subport parameters from subport profile table*/ 1257 profile = port->subport_profiles + subport_profile_id; 1258 1259 s = port->subports[subport_id]; 1260 1261 s->tb_credits = profile->tb_size / 2; 1262 1263 s->tc_time = port->time + profile->tc_period; 1264 1265 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 1266 if (s->qsize[i]) 1267 s->tc_credits[i] = 1268 profile->tc_credits_per_period[i]; 1269 else 1270 profile->tc_credits_per_period[i] = 0; 1271 1272 #ifdef RTE_SCHED_SUBPORT_TC_OV 1273 s->tc_ov_wm_max = rte_sched_time_ms_to_bytes(profile->tc_period, 1274 s->pipe_tc_be_rate_max); 1275 s->tc_ov_wm = s->tc_ov_wm_max; 1276 #endif 1277 s->profile = subport_profile_id; 1278 1279 } 1280 1281 rte_sched_port_log_subport_profile(port, subport_profile_id); 1282 1283 return 0; 1284 1285 out: 1286 rte_sched_free_memory(port, n_subports); 1287 1288 return ret; 1289 } 1290 1291 int 1292 rte_sched_pipe_config(struct rte_sched_port *port, 1293 uint32_t subport_id, 1294 uint32_t pipe_id, 1295 int32_t pipe_profile) 1296 { 1297 struct rte_sched_subport *s; 1298 struct rte_sched_subport_profile *sp; 1299 struct rte_sched_pipe *p; 1300 struct rte_sched_pipe_profile *params; 1301 uint32_t n_subports = subport_id + 1; 1302 uint32_t deactivate, profile, i; 1303 int ret; 1304 1305 /* Check user parameters */ 1306 profile = (uint32_t) pipe_profile; 1307 deactivate = (pipe_profile < 0); 1308 1309 if (port == NULL) { 1310 RTE_LOG(ERR, SCHED, 1311 "%s: Incorrect value for parameter port\n", __func__); 1312 return -EINVAL; 1313 } 1314 1315 if (subport_id >= port->n_subports_per_port) { 1316 RTE_LOG(ERR, SCHED, 1317 "%s: Incorrect value for parameter subport id\n", __func__); 1318 ret = -EINVAL; 1319 goto out; 1320 } 1321 1322 s = port->subports[subport_id]; 1323 if (pipe_id >= s->n_pipes_per_subport_enabled) { 1324 RTE_LOG(ERR, SCHED, 1325 "%s: Incorrect value for parameter pipe id\n", __func__); 1326 ret = -EINVAL; 1327 goto out; 1328 } 1329 1330 if (!deactivate && profile >= s->n_pipe_profiles) { 1331 RTE_LOG(ERR, SCHED, 1332 "%s: Incorrect value for parameter pipe profile\n", __func__); 1333 ret = -EINVAL; 1334 goto out; 1335 } 1336 1337 sp = port->subport_profiles + s->profile; 1338 /* Handle the case when pipe already has a valid configuration */ 1339 p = s->pipe + pipe_id; 1340 if (p->tb_time) { 1341 params = s->pipe_profiles + p->profile; 1342 1343 double subport_tc_be_rate = 1344 (double)sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1345 / (double) sp->tc_period; 1346 double pipe_tc_be_rate = 1347 (double) params->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1348 / (double) params->tc_period; 1349 uint32_t tc_be_ov = s->tc_ov; 1350 1351 /* Unplug pipe from its subport */ 1352 s->tc_ov_n -= params->tc_ov_weight; 1353 s->tc_ov_rate -= pipe_tc_be_rate; 1354 s->tc_ov = s->tc_ov_rate > subport_tc_be_rate; 1355 1356 if (s->tc_ov != tc_be_ov) { 1357 RTE_LOG(DEBUG, SCHED, 1358 "Subport %u Best-effort TC oversubscription is OFF (%.4lf >= %.4lf)\n", 1359 subport_id, subport_tc_be_rate, s->tc_ov_rate); 1360 } 1361 1362 /* Reset the pipe */ 1363 memset(p, 0, sizeof(struct rte_sched_pipe)); 1364 } 1365 1366 if (deactivate) 1367 return 0; 1368 1369 /* Apply the new pipe configuration */ 1370 p->profile = profile; 1371 params = s->pipe_profiles + p->profile; 1372 1373 /* Token Bucket (TB) */ 1374 p->tb_time = port->time; 1375 p->tb_credits = params->tb_size / 2; 1376 1377 /* Traffic Classes (TCs) */ 1378 p->tc_time = port->time + params->tc_period; 1379 1380 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 1381 if (s->qsize[i]) 1382 p->tc_credits[i] = params->tc_credits_per_period[i]; 1383 1384 { 1385 /* Subport best effort tc oversubscription */ 1386 double subport_tc_be_rate = 1387 (double)sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1388 / (double) sp->tc_period; 1389 double pipe_tc_be_rate = 1390 (double) params->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1391 / (double) params->tc_period; 1392 uint32_t tc_be_ov = s->tc_ov; 1393 1394 s->tc_ov_n += params->tc_ov_weight; 1395 s->tc_ov_rate += pipe_tc_be_rate; 1396 s->tc_ov = s->tc_ov_rate > subport_tc_be_rate; 1397 1398 if (s->tc_ov != tc_be_ov) { 1399 RTE_LOG(DEBUG, SCHED, 1400 "Subport %u Best effort TC oversubscription is ON (%.4lf < %.4lf)\n", 1401 subport_id, subport_tc_be_rate, s->tc_ov_rate); 1402 } 1403 p->tc_ov_period_id = s->tc_ov_period_id; 1404 p->tc_ov_credits = s->tc_ov_wm; 1405 } 1406 1407 return 0; 1408 1409 out: 1410 rte_sched_free_memory(port, n_subports); 1411 1412 return ret; 1413 } 1414 1415 int 1416 rte_sched_subport_pipe_profile_add(struct rte_sched_port *port, 1417 uint32_t subport_id, 1418 struct rte_sched_pipe_params *params, 1419 uint32_t *pipe_profile_id) 1420 { 1421 struct rte_sched_subport *s; 1422 struct rte_sched_pipe_profile *pp; 1423 uint32_t i; 1424 int status; 1425 1426 /* Port */ 1427 if (port == NULL) { 1428 RTE_LOG(ERR, SCHED, 1429 "%s: Incorrect value for parameter port\n", __func__); 1430 return -EINVAL; 1431 } 1432 1433 /* Subport id not exceeds the max limit */ 1434 if (subport_id > port->n_subports_per_port) { 1435 RTE_LOG(ERR, SCHED, 1436 "%s: Incorrect value for subport id\n", __func__); 1437 return -EINVAL; 1438 } 1439 1440 s = port->subports[subport_id]; 1441 1442 /* Pipe profiles exceeds the max limit */ 1443 if (s->n_pipe_profiles >= s->n_max_pipe_profiles) { 1444 RTE_LOG(ERR, SCHED, 1445 "%s: Number of pipe profiles exceeds the max limit\n", __func__); 1446 return -EINVAL; 1447 } 1448 1449 /* Pipe params */ 1450 status = pipe_profile_check(params, port->rate, &s->qsize[0]); 1451 if (status != 0) { 1452 RTE_LOG(ERR, SCHED, 1453 "%s: Pipe profile check failed(%d)\n", __func__, status); 1454 return -EINVAL; 1455 } 1456 1457 pp = &s->pipe_profiles[s->n_pipe_profiles]; 1458 rte_sched_pipe_profile_convert(s, params, pp, port->rate); 1459 1460 /* Pipe profile should not exists */ 1461 for (i = 0; i < s->n_pipe_profiles; i++) 1462 if (memcmp(s->pipe_profiles + i, pp, sizeof(*pp)) == 0) { 1463 RTE_LOG(ERR, SCHED, 1464 "%s: Pipe profile exists\n", __func__); 1465 return -EINVAL; 1466 } 1467 1468 /* Pipe profile commit */ 1469 *pipe_profile_id = s->n_pipe_profiles; 1470 s->n_pipe_profiles++; 1471 1472 if (s->pipe_tc_be_rate_max < params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]) 1473 s->pipe_tc_be_rate_max = params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]; 1474 1475 rte_sched_port_log_pipe_profile(s, *pipe_profile_id); 1476 1477 return 0; 1478 } 1479 1480 int 1481 rte_sched_port_subport_profile_add(struct rte_sched_port *port, 1482 struct rte_sched_subport_profile_params *params, 1483 uint32_t *subport_profile_id) 1484 { 1485 int status; 1486 uint32_t i; 1487 struct rte_sched_subport_profile *dst; 1488 1489 /* Port */ 1490 if (port == NULL) { 1491 RTE_LOG(ERR, SCHED, "%s: " 1492 "Incorrect value for parameter port\n", __func__); 1493 return -EINVAL; 1494 } 1495 1496 if (params == NULL) { 1497 RTE_LOG(ERR, SCHED, "%s: " 1498 "Incorrect value for parameter profile\n", __func__); 1499 return -EINVAL; 1500 } 1501 1502 if (subport_profile_id == NULL) { 1503 RTE_LOG(ERR, SCHED, "%s: " 1504 "Incorrect value for parameter subport_profile_id\n", 1505 __func__); 1506 return -EINVAL; 1507 } 1508 1509 dst = port->subport_profiles + port->n_subport_profiles; 1510 1511 /* Subport profiles exceeds the max limit */ 1512 if (port->n_subport_profiles >= port->n_max_subport_profiles) { 1513 RTE_LOG(ERR, SCHED, "%s: " 1514 "Number of subport profiles exceeds the max limit\n", 1515 __func__); 1516 return -EINVAL; 1517 } 1518 1519 status = subport_profile_check(params, port->rate); 1520 if (status != 0) { 1521 RTE_LOG(ERR, SCHED, 1522 "%s: subport profile check failed(%d)\n", __func__, status); 1523 return -EINVAL; 1524 } 1525 1526 rte_sched_subport_profile_convert(params, dst, port->rate); 1527 1528 /* Subport profile should not exists */ 1529 for (i = 0; i < port->n_subport_profiles; i++) 1530 if (memcmp(port->subport_profiles + i, 1531 dst, sizeof(*dst)) == 0) { 1532 RTE_LOG(ERR, SCHED, 1533 "%s: subport profile exists\n", __func__); 1534 return -EINVAL; 1535 } 1536 1537 /* Subport profile commit */ 1538 *subport_profile_id = port->n_subport_profiles; 1539 port->n_subport_profiles++; 1540 1541 rte_sched_port_log_subport_profile(port, *subport_profile_id); 1542 1543 return 0; 1544 } 1545 1546 static inline uint32_t 1547 rte_sched_port_qindex(struct rte_sched_port *port, 1548 uint32_t subport, 1549 uint32_t pipe, 1550 uint32_t traffic_class, 1551 uint32_t queue) 1552 { 1553 return ((subport & (port->n_subports_per_port - 1)) << 1554 (port->n_pipes_per_subport_log2 + 4)) | 1555 ((pipe & 1556 (port->subports[subport]->n_pipes_per_subport_enabled - 1)) << 4) | 1557 ((rte_sched_port_pipe_queue(port, traffic_class) + queue) & 1558 (RTE_SCHED_QUEUES_PER_PIPE - 1)); 1559 } 1560 1561 void 1562 rte_sched_port_pkt_write(struct rte_sched_port *port, 1563 struct rte_mbuf *pkt, 1564 uint32_t subport, uint32_t pipe, 1565 uint32_t traffic_class, 1566 uint32_t queue, enum rte_color color) 1567 { 1568 uint32_t queue_id = 1569 rte_sched_port_qindex(port, subport, pipe, traffic_class, queue); 1570 1571 rte_mbuf_sched_set(pkt, queue_id, traffic_class, (uint8_t)color); 1572 } 1573 1574 void 1575 rte_sched_port_pkt_read_tree_path(struct rte_sched_port *port, 1576 const struct rte_mbuf *pkt, 1577 uint32_t *subport, uint32_t *pipe, 1578 uint32_t *traffic_class, uint32_t *queue) 1579 { 1580 uint32_t queue_id = rte_mbuf_sched_queue_get(pkt); 1581 1582 *subport = queue_id >> (port->n_pipes_per_subport_log2 + 4); 1583 *pipe = (queue_id >> 4) & 1584 (port->subports[*subport]->n_pipes_per_subport_enabled - 1); 1585 *traffic_class = rte_sched_port_pipe_tc(port, queue_id); 1586 *queue = rte_sched_port_tc_queue(port, queue_id); 1587 } 1588 1589 enum rte_color 1590 rte_sched_port_pkt_read_color(const struct rte_mbuf *pkt) 1591 { 1592 return (enum rte_color)rte_mbuf_sched_color_get(pkt); 1593 } 1594 1595 int 1596 rte_sched_subport_read_stats(struct rte_sched_port *port, 1597 uint32_t subport_id, 1598 struct rte_sched_subport_stats *stats, 1599 uint32_t *tc_ov) 1600 { 1601 struct rte_sched_subport *s; 1602 1603 /* Check user parameters */ 1604 if (port == NULL) { 1605 RTE_LOG(ERR, SCHED, 1606 "%s: Incorrect value for parameter port\n", __func__); 1607 return -EINVAL; 1608 } 1609 1610 if (subport_id >= port->n_subports_per_port) { 1611 RTE_LOG(ERR, SCHED, 1612 "%s: Incorrect value for subport id\n", __func__); 1613 return -EINVAL; 1614 } 1615 1616 if (stats == NULL) { 1617 RTE_LOG(ERR, SCHED, 1618 "%s: Incorrect value for parameter stats\n", __func__); 1619 return -EINVAL; 1620 } 1621 1622 if (tc_ov == NULL) { 1623 RTE_LOG(ERR, SCHED, 1624 "%s: Incorrect value for tc_ov\n", __func__); 1625 return -EINVAL; 1626 } 1627 1628 s = port->subports[subport_id]; 1629 1630 /* Copy subport stats and clear */ 1631 memcpy(stats, &s->stats, sizeof(struct rte_sched_subport_stats)); 1632 memset(&s->stats, 0, sizeof(struct rte_sched_subport_stats)); 1633 1634 /* Subport TC oversubscription status */ 1635 *tc_ov = s->tc_ov; 1636 1637 return 0; 1638 } 1639 1640 int 1641 rte_sched_queue_read_stats(struct rte_sched_port *port, 1642 uint32_t queue_id, 1643 struct rte_sched_queue_stats *stats, 1644 uint16_t *qlen) 1645 { 1646 struct rte_sched_subport *s; 1647 struct rte_sched_queue *q; 1648 struct rte_sched_queue_extra *qe; 1649 uint32_t subport_id, subport_qmask, subport_qindex; 1650 1651 /* Check user parameters */ 1652 if (port == NULL) { 1653 RTE_LOG(ERR, SCHED, 1654 "%s: Incorrect value for parameter port\n", __func__); 1655 return -EINVAL; 1656 } 1657 1658 if (queue_id >= rte_sched_port_queues_per_port(port)) { 1659 RTE_LOG(ERR, SCHED, 1660 "%s: Incorrect value for queue id\n", __func__); 1661 return -EINVAL; 1662 } 1663 1664 if (stats == NULL) { 1665 RTE_LOG(ERR, SCHED, 1666 "%s: Incorrect value for parameter stats\n", __func__); 1667 return -EINVAL; 1668 } 1669 1670 if (qlen == NULL) { 1671 RTE_LOG(ERR, SCHED, 1672 "%s: Incorrect value for parameter qlen\n", __func__); 1673 return -EINVAL; 1674 } 1675 subport_qmask = port->n_pipes_per_subport_log2 + 4; 1676 subport_id = (queue_id >> subport_qmask) & (port->n_subports_per_port - 1); 1677 1678 s = port->subports[subport_id]; 1679 subport_qindex = ((1 << subport_qmask) - 1) & queue_id; 1680 q = s->queue + subport_qindex; 1681 qe = s->queue_extra + subport_qindex; 1682 1683 /* Copy queue stats and clear */ 1684 memcpy(stats, &qe->stats, sizeof(struct rte_sched_queue_stats)); 1685 memset(&qe->stats, 0, sizeof(struct rte_sched_queue_stats)); 1686 1687 /* Queue length */ 1688 *qlen = q->qw - q->qr; 1689 1690 return 0; 1691 } 1692 1693 #ifdef RTE_SCHED_DEBUG 1694 1695 static inline int 1696 rte_sched_port_queue_is_empty(struct rte_sched_subport *subport, 1697 uint32_t qindex) 1698 { 1699 struct rte_sched_queue *queue = subport->queue + qindex; 1700 1701 return queue->qr == queue->qw; 1702 } 1703 1704 #endif /* RTE_SCHED_DEBUG */ 1705 1706 #ifdef RTE_SCHED_COLLECT_STATS 1707 1708 static inline void 1709 rte_sched_port_update_subport_stats(struct rte_sched_port *port, 1710 struct rte_sched_subport *subport, 1711 uint32_t qindex, 1712 struct rte_mbuf *pkt) 1713 { 1714 uint32_t tc_index = rte_sched_port_pipe_tc(port, qindex); 1715 uint32_t pkt_len = pkt->pkt_len; 1716 1717 subport->stats.n_pkts_tc[tc_index] += 1; 1718 subport->stats.n_bytes_tc[tc_index] += pkt_len; 1719 } 1720 1721 #ifdef RTE_SCHED_RED 1722 static inline void 1723 rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port, 1724 struct rte_sched_subport *subport, 1725 uint32_t qindex, 1726 struct rte_mbuf *pkt, 1727 uint32_t red) 1728 #else 1729 static inline void 1730 rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port, 1731 struct rte_sched_subport *subport, 1732 uint32_t qindex, 1733 struct rte_mbuf *pkt, 1734 __rte_unused uint32_t red) 1735 #endif 1736 { 1737 uint32_t tc_index = rte_sched_port_pipe_tc(port, qindex); 1738 uint32_t pkt_len = pkt->pkt_len; 1739 1740 subport->stats.n_pkts_tc_dropped[tc_index] += 1; 1741 subport->stats.n_bytes_tc_dropped[tc_index] += pkt_len; 1742 #ifdef RTE_SCHED_RED 1743 subport->stats.n_pkts_red_dropped[tc_index] += red; 1744 #endif 1745 } 1746 1747 static inline void 1748 rte_sched_port_update_queue_stats(struct rte_sched_subport *subport, 1749 uint32_t qindex, 1750 struct rte_mbuf *pkt) 1751 { 1752 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1753 uint32_t pkt_len = pkt->pkt_len; 1754 1755 qe->stats.n_pkts += 1; 1756 qe->stats.n_bytes += pkt_len; 1757 } 1758 1759 #ifdef RTE_SCHED_RED 1760 static inline void 1761 rte_sched_port_update_queue_stats_on_drop(struct rte_sched_subport *subport, 1762 uint32_t qindex, 1763 struct rte_mbuf *pkt, 1764 uint32_t red) 1765 #else 1766 static inline void 1767 rte_sched_port_update_queue_stats_on_drop(struct rte_sched_subport *subport, 1768 uint32_t qindex, 1769 struct rte_mbuf *pkt, 1770 __rte_unused uint32_t red) 1771 #endif 1772 { 1773 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1774 uint32_t pkt_len = pkt->pkt_len; 1775 1776 qe->stats.n_pkts_dropped += 1; 1777 qe->stats.n_bytes_dropped += pkt_len; 1778 #ifdef RTE_SCHED_RED 1779 qe->stats.n_pkts_red_dropped += red; 1780 #endif 1781 } 1782 1783 #endif /* RTE_SCHED_COLLECT_STATS */ 1784 1785 #ifdef RTE_SCHED_RED 1786 1787 static inline int 1788 rte_sched_port_red_drop(struct rte_sched_port *port, 1789 struct rte_sched_subport *subport, 1790 struct rte_mbuf *pkt, 1791 uint32_t qindex, 1792 uint16_t qlen) 1793 { 1794 struct rte_sched_queue_extra *qe; 1795 struct rte_red_config *red_cfg; 1796 struct rte_red *red; 1797 uint32_t tc_index; 1798 enum rte_color color; 1799 1800 tc_index = rte_sched_port_pipe_tc(port, qindex); 1801 color = rte_sched_port_pkt_read_color(pkt); 1802 red_cfg = &subport->red_config[tc_index][color]; 1803 1804 if ((red_cfg->min_th | red_cfg->max_th) == 0) 1805 return 0; 1806 1807 qe = subport->queue_extra + qindex; 1808 red = &qe->red; 1809 1810 return rte_red_enqueue(red_cfg, red, qlen, port->time); 1811 } 1812 1813 static inline void 1814 rte_sched_port_set_queue_empty_timestamp(struct rte_sched_port *port, 1815 struct rte_sched_subport *subport, uint32_t qindex) 1816 { 1817 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1818 struct rte_red *red = &qe->red; 1819 1820 rte_red_mark_queue_empty(red, port->time); 1821 } 1822 1823 #else 1824 1825 static inline int rte_sched_port_red_drop(struct rte_sched_port *port __rte_unused, 1826 struct rte_sched_subport *subport __rte_unused, 1827 struct rte_mbuf *pkt __rte_unused, 1828 uint32_t qindex __rte_unused, 1829 uint16_t qlen __rte_unused) 1830 { 1831 return 0; 1832 } 1833 1834 #define rte_sched_port_set_queue_empty_timestamp(port, subport, qindex) 1835 1836 #endif /* RTE_SCHED_RED */ 1837 1838 #ifdef RTE_SCHED_DEBUG 1839 1840 static inline void 1841 debug_check_queue_slab(struct rte_sched_subport *subport, uint32_t bmp_pos, 1842 uint64_t bmp_slab) 1843 { 1844 uint64_t mask; 1845 uint32_t i, panic; 1846 1847 if (bmp_slab == 0) 1848 rte_panic("Empty slab at position %u\n", bmp_pos); 1849 1850 panic = 0; 1851 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) { 1852 if (mask & bmp_slab) { 1853 if (rte_sched_port_queue_is_empty(subport, bmp_pos + i)) { 1854 printf("Queue %u (slab offset %u) is empty\n", bmp_pos + i, i); 1855 panic = 1; 1856 } 1857 } 1858 } 1859 1860 if (panic) 1861 rte_panic("Empty queues in slab 0x%" PRIx64 "starting at position %u\n", 1862 bmp_slab, bmp_pos); 1863 } 1864 1865 #endif /* RTE_SCHED_DEBUG */ 1866 1867 static inline struct rte_sched_subport * 1868 rte_sched_port_subport(struct rte_sched_port *port, 1869 struct rte_mbuf *pkt) 1870 { 1871 uint32_t queue_id = rte_mbuf_sched_queue_get(pkt); 1872 uint32_t subport_id = queue_id >> (port->n_pipes_per_subport_log2 + 4); 1873 1874 return port->subports[subport_id]; 1875 } 1876 1877 static inline uint32_t 1878 rte_sched_port_enqueue_qptrs_prefetch0(struct rte_sched_subport *subport, 1879 struct rte_mbuf *pkt, uint32_t subport_qmask) 1880 { 1881 struct rte_sched_queue *q; 1882 #ifdef RTE_SCHED_COLLECT_STATS 1883 struct rte_sched_queue_extra *qe; 1884 #endif 1885 uint32_t qindex = rte_mbuf_sched_queue_get(pkt); 1886 uint32_t subport_queue_id = subport_qmask & qindex; 1887 1888 q = subport->queue + subport_queue_id; 1889 rte_prefetch0(q); 1890 #ifdef RTE_SCHED_COLLECT_STATS 1891 qe = subport->queue_extra + subport_queue_id; 1892 rte_prefetch0(qe); 1893 #endif 1894 1895 return subport_queue_id; 1896 } 1897 1898 static inline void 1899 rte_sched_port_enqueue_qwa_prefetch0(struct rte_sched_port *port, 1900 struct rte_sched_subport *subport, 1901 uint32_t qindex, 1902 struct rte_mbuf **qbase) 1903 { 1904 struct rte_sched_queue *q; 1905 struct rte_mbuf **q_qw; 1906 uint16_t qsize; 1907 1908 q = subport->queue + qindex; 1909 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 1910 q_qw = qbase + (q->qw & (qsize - 1)); 1911 1912 rte_prefetch0(q_qw); 1913 rte_bitmap_prefetch0(subport->bmp, qindex); 1914 } 1915 1916 static inline int 1917 rte_sched_port_enqueue_qwa(struct rte_sched_port *port, 1918 struct rte_sched_subport *subport, 1919 uint32_t qindex, 1920 struct rte_mbuf **qbase, 1921 struct rte_mbuf *pkt) 1922 { 1923 struct rte_sched_queue *q; 1924 uint16_t qsize; 1925 uint16_t qlen; 1926 1927 q = subport->queue + qindex; 1928 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 1929 qlen = q->qw - q->qr; 1930 1931 /* Drop the packet (and update drop stats) when queue is full */ 1932 if (unlikely(rte_sched_port_red_drop(port, subport, pkt, qindex, qlen) || 1933 (qlen >= qsize))) { 1934 rte_pktmbuf_free(pkt); 1935 #ifdef RTE_SCHED_COLLECT_STATS 1936 rte_sched_port_update_subport_stats_on_drop(port, subport, 1937 qindex, pkt, qlen < qsize); 1938 rte_sched_port_update_queue_stats_on_drop(subport, qindex, pkt, 1939 qlen < qsize); 1940 #endif 1941 return 0; 1942 } 1943 1944 /* Enqueue packet */ 1945 qbase[q->qw & (qsize - 1)] = pkt; 1946 q->qw++; 1947 1948 /* Activate queue in the subport bitmap */ 1949 rte_bitmap_set(subport->bmp, qindex); 1950 1951 /* Statistics */ 1952 #ifdef RTE_SCHED_COLLECT_STATS 1953 rte_sched_port_update_subport_stats(port, subport, qindex, pkt); 1954 rte_sched_port_update_queue_stats(subport, qindex, pkt); 1955 #endif 1956 1957 return 1; 1958 } 1959 1960 1961 /* 1962 * The enqueue function implements a 4-level pipeline with each stage 1963 * processing two different packets. The purpose of using a pipeline 1964 * is to hide the latency of prefetching the data structures. The 1965 * naming convention is presented in the diagram below: 1966 * 1967 * p00 _______ p10 _______ p20 _______ p30 _______ 1968 * ----->| |----->| |----->| |----->| |-----> 1969 * | 0 | | 1 | | 2 | | 3 | 1970 * ----->|_______|----->|_______|----->|_______|----->|_______|-----> 1971 * p01 p11 p21 p31 1972 * 1973 */ 1974 int 1975 rte_sched_port_enqueue(struct rte_sched_port *port, struct rte_mbuf **pkts, 1976 uint32_t n_pkts) 1977 { 1978 struct rte_mbuf *pkt00, *pkt01, *pkt10, *pkt11, *pkt20, *pkt21, 1979 *pkt30, *pkt31, *pkt_last; 1980 struct rte_mbuf **q00_base, **q01_base, **q10_base, **q11_base, 1981 **q20_base, **q21_base, **q30_base, **q31_base, **q_last_base; 1982 struct rte_sched_subport *subport00, *subport01, *subport10, *subport11, 1983 *subport20, *subport21, *subport30, *subport31, *subport_last; 1984 uint32_t q00, q01, q10, q11, q20, q21, q30, q31, q_last; 1985 uint32_t r00, r01, r10, r11, r20, r21, r30, r31, r_last; 1986 uint32_t subport_qmask; 1987 uint32_t result, i; 1988 1989 result = 0; 1990 subport_qmask = (1 << (port->n_pipes_per_subport_log2 + 4)) - 1; 1991 1992 /* 1993 * Less then 6 input packets available, which is not enough to 1994 * feed the pipeline 1995 */ 1996 if (unlikely(n_pkts < 6)) { 1997 struct rte_sched_subport *subports[5]; 1998 struct rte_mbuf **q_base[5]; 1999 uint32_t q[5]; 2000 2001 /* Prefetch the mbuf structure of each packet */ 2002 for (i = 0; i < n_pkts; i++) 2003 rte_prefetch0(pkts[i]); 2004 2005 /* Prefetch the subport structure for each packet */ 2006 for (i = 0; i < n_pkts; i++) 2007 subports[i] = rte_sched_port_subport(port, pkts[i]); 2008 2009 /* Prefetch the queue structure for each queue */ 2010 for (i = 0; i < n_pkts; i++) 2011 q[i] = rte_sched_port_enqueue_qptrs_prefetch0(subports[i], 2012 pkts[i], subport_qmask); 2013 2014 /* Prefetch the write pointer location of each queue */ 2015 for (i = 0; i < n_pkts; i++) { 2016 q_base[i] = rte_sched_subport_pipe_qbase(subports[i], q[i]); 2017 rte_sched_port_enqueue_qwa_prefetch0(port, subports[i], 2018 q[i], q_base[i]); 2019 } 2020 2021 /* Write each packet to its queue */ 2022 for (i = 0; i < n_pkts; i++) 2023 result += rte_sched_port_enqueue_qwa(port, subports[i], 2024 q[i], q_base[i], pkts[i]); 2025 2026 return result; 2027 } 2028 2029 /* Feed the first 3 stages of the pipeline (6 packets needed) */ 2030 pkt20 = pkts[0]; 2031 pkt21 = pkts[1]; 2032 rte_prefetch0(pkt20); 2033 rte_prefetch0(pkt21); 2034 2035 pkt10 = pkts[2]; 2036 pkt11 = pkts[3]; 2037 rte_prefetch0(pkt10); 2038 rte_prefetch0(pkt11); 2039 2040 subport20 = rte_sched_port_subport(port, pkt20); 2041 subport21 = rte_sched_port_subport(port, pkt21); 2042 q20 = rte_sched_port_enqueue_qptrs_prefetch0(subport20, 2043 pkt20, subport_qmask); 2044 q21 = rte_sched_port_enqueue_qptrs_prefetch0(subport21, 2045 pkt21, subport_qmask); 2046 2047 pkt00 = pkts[4]; 2048 pkt01 = pkts[5]; 2049 rte_prefetch0(pkt00); 2050 rte_prefetch0(pkt01); 2051 2052 subport10 = rte_sched_port_subport(port, pkt10); 2053 subport11 = rte_sched_port_subport(port, pkt11); 2054 q10 = rte_sched_port_enqueue_qptrs_prefetch0(subport10, 2055 pkt10, subport_qmask); 2056 q11 = rte_sched_port_enqueue_qptrs_prefetch0(subport11, 2057 pkt11, subport_qmask); 2058 2059 q20_base = rte_sched_subport_pipe_qbase(subport20, q20); 2060 q21_base = rte_sched_subport_pipe_qbase(subport21, q21); 2061 rte_sched_port_enqueue_qwa_prefetch0(port, subport20, q20, q20_base); 2062 rte_sched_port_enqueue_qwa_prefetch0(port, subport21, q21, q21_base); 2063 2064 /* Run the pipeline */ 2065 for (i = 6; i < (n_pkts & (~1)); i += 2) { 2066 /* Propagate stage inputs */ 2067 pkt30 = pkt20; 2068 pkt31 = pkt21; 2069 pkt20 = pkt10; 2070 pkt21 = pkt11; 2071 pkt10 = pkt00; 2072 pkt11 = pkt01; 2073 q30 = q20; 2074 q31 = q21; 2075 q20 = q10; 2076 q21 = q11; 2077 subport30 = subport20; 2078 subport31 = subport21; 2079 subport20 = subport10; 2080 subport21 = subport11; 2081 q30_base = q20_base; 2082 q31_base = q21_base; 2083 2084 /* Stage 0: Get packets in */ 2085 pkt00 = pkts[i]; 2086 pkt01 = pkts[i + 1]; 2087 rte_prefetch0(pkt00); 2088 rte_prefetch0(pkt01); 2089 2090 /* Stage 1: Prefetch subport and queue structure storing queue pointers */ 2091 subport10 = rte_sched_port_subport(port, pkt10); 2092 subport11 = rte_sched_port_subport(port, pkt11); 2093 q10 = rte_sched_port_enqueue_qptrs_prefetch0(subport10, 2094 pkt10, subport_qmask); 2095 q11 = rte_sched_port_enqueue_qptrs_prefetch0(subport11, 2096 pkt11, subport_qmask); 2097 2098 /* Stage 2: Prefetch queue write location */ 2099 q20_base = rte_sched_subport_pipe_qbase(subport20, q20); 2100 q21_base = rte_sched_subport_pipe_qbase(subport21, q21); 2101 rte_sched_port_enqueue_qwa_prefetch0(port, subport20, q20, q20_base); 2102 rte_sched_port_enqueue_qwa_prefetch0(port, subport21, q21, q21_base); 2103 2104 /* Stage 3: Write packet to queue and activate queue */ 2105 r30 = rte_sched_port_enqueue_qwa(port, subport30, 2106 q30, q30_base, pkt30); 2107 r31 = rte_sched_port_enqueue_qwa(port, subport31, 2108 q31, q31_base, pkt31); 2109 result += r30 + r31; 2110 } 2111 2112 /* 2113 * Drain the pipeline (exactly 6 packets). 2114 * Handle the last packet in the case 2115 * of an odd number of input packets. 2116 */ 2117 pkt_last = pkts[n_pkts - 1]; 2118 rte_prefetch0(pkt_last); 2119 2120 subport00 = rte_sched_port_subport(port, pkt00); 2121 subport01 = rte_sched_port_subport(port, pkt01); 2122 q00 = rte_sched_port_enqueue_qptrs_prefetch0(subport00, 2123 pkt00, subport_qmask); 2124 q01 = rte_sched_port_enqueue_qptrs_prefetch0(subport01, 2125 pkt01, subport_qmask); 2126 2127 q10_base = rte_sched_subport_pipe_qbase(subport10, q10); 2128 q11_base = rte_sched_subport_pipe_qbase(subport11, q11); 2129 rte_sched_port_enqueue_qwa_prefetch0(port, subport10, q10, q10_base); 2130 rte_sched_port_enqueue_qwa_prefetch0(port, subport11, q11, q11_base); 2131 2132 r20 = rte_sched_port_enqueue_qwa(port, subport20, 2133 q20, q20_base, pkt20); 2134 r21 = rte_sched_port_enqueue_qwa(port, subport21, 2135 q21, q21_base, pkt21); 2136 result += r20 + r21; 2137 2138 subport_last = rte_sched_port_subport(port, pkt_last); 2139 q_last = rte_sched_port_enqueue_qptrs_prefetch0(subport_last, 2140 pkt_last, subport_qmask); 2141 2142 q00_base = rte_sched_subport_pipe_qbase(subport00, q00); 2143 q01_base = rte_sched_subport_pipe_qbase(subport01, q01); 2144 rte_sched_port_enqueue_qwa_prefetch0(port, subport00, q00, q00_base); 2145 rte_sched_port_enqueue_qwa_prefetch0(port, subport01, q01, q01_base); 2146 2147 r10 = rte_sched_port_enqueue_qwa(port, subport10, q10, 2148 q10_base, pkt10); 2149 r11 = rte_sched_port_enqueue_qwa(port, subport11, q11, 2150 q11_base, pkt11); 2151 result += r10 + r11; 2152 2153 q_last_base = rte_sched_subport_pipe_qbase(subport_last, q_last); 2154 rte_sched_port_enqueue_qwa_prefetch0(port, subport_last, 2155 q_last, q_last_base); 2156 2157 r00 = rte_sched_port_enqueue_qwa(port, subport00, q00, 2158 q00_base, pkt00); 2159 r01 = rte_sched_port_enqueue_qwa(port, subport01, q01, 2160 q01_base, pkt01); 2161 result += r00 + r01; 2162 2163 if (n_pkts & 1) { 2164 r_last = rte_sched_port_enqueue_qwa(port, subport_last, 2165 q_last, q_last_base, pkt_last); 2166 result += r_last; 2167 } 2168 2169 return result; 2170 } 2171 2172 #ifndef RTE_SCHED_SUBPORT_TC_OV 2173 2174 static inline void 2175 grinder_credits_update(struct rte_sched_port *port, 2176 struct rte_sched_subport *subport, uint32_t pos) 2177 { 2178 struct rte_sched_grinder *grinder = subport->grinder + pos; 2179 struct rte_sched_pipe *pipe = grinder->pipe; 2180 struct rte_sched_pipe_profile *params = grinder->pipe_params; 2181 struct rte_sched_subport_profile *sp = grinder->subport_params; 2182 uint64_t n_periods; 2183 uint32_t i; 2184 2185 /* Subport TB */ 2186 n_periods = (port->time - subport->tb_time) / sp->tb_period; 2187 subport->tb_credits += n_periods * sp->tb_credits_per_period; 2188 subport->tb_credits = RTE_MIN(subport->tb_credits, sp->tb_size); 2189 subport->tb_time += n_periods * sp->tb_period; 2190 2191 /* Pipe TB */ 2192 n_periods = (port->time - pipe->tb_time) / params->tb_period; 2193 pipe->tb_credits += n_periods * params->tb_credits_per_period; 2194 pipe->tb_credits = RTE_MIN(pipe->tb_credits, params->tb_size); 2195 pipe->tb_time += n_periods * params->tb_period; 2196 2197 /* Subport TCs */ 2198 if (unlikely(port->time >= subport->tc_time)) { 2199 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2200 subport->tc_credits[i] = sp->tc_credits_per_period[i]; 2201 2202 subport->tc_time = port->time + sp->tc_period; 2203 } 2204 2205 /* Pipe TCs */ 2206 if (unlikely(port->time >= pipe->tc_time)) { 2207 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2208 pipe->tc_credits[i] = params->tc_credits_per_period[i]; 2209 2210 pipe->tc_time = port->time + params->tc_period; 2211 } 2212 } 2213 2214 #else 2215 2216 static inline uint64_t 2217 grinder_tc_ov_credits_update(struct rte_sched_port *port, 2218 struct rte_sched_subport *subport, uint32_t pos) 2219 { 2220 struct rte_sched_grinder *grinder = subport->grinder + pos; 2221 struct rte_sched_subport_profile *sp = grinder->subport_params; 2222 uint64_t tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 2223 uint64_t tc_consumption = 0, tc_ov_consumption_max; 2224 uint64_t tc_ov_wm = subport->tc_ov_wm; 2225 uint32_t i; 2226 2227 if (subport->tc_ov == 0) 2228 return subport->tc_ov_wm_max; 2229 2230 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASS_BE; i++) { 2231 tc_ov_consumption[i] = sp->tc_credits_per_period[i] 2232 - subport->tc_credits[i]; 2233 tc_consumption += tc_ov_consumption[i]; 2234 } 2235 2236 tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASS_BE] = 2237 sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] - 2238 subport->tc_credits[RTE_SCHED_TRAFFIC_CLASS_BE]; 2239 2240 tc_ov_consumption_max = 2241 sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] - 2242 tc_consumption; 2243 2244 if (tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASS_BE] > 2245 (tc_ov_consumption_max - port->mtu)) { 2246 tc_ov_wm -= tc_ov_wm >> 7; 2247 if (tc_ov_wm < subport->tc_ov_wm_min) 2248 tc_ov_wm = subport->tc_ov_wm_min; 2249 2250 return tc_ov_wm; 2251 } 2252 2253 tc_ov_wm += (tc_ov_wm >> 7) + 1; 2254 if (tc_ov_wm > subport->tc_ov_wm_max) 2255 tc_ov_wm = subport->tc_ov_wm_max; 2256 2257 return tc_ov_wm; 2258 } 2259 2260 static inline void 2261 grinder_credits_update(struct rte_sched_port *port, 2262 struct rte_sched_subport *subport, uint32_t pos) 2263 { 2264 struct rte_sched_grinder *grinder = subport->grinder + pos; 2265 struct rte_sched_pipe *pipe = grinder->pipe; 2266 struct rte_sched_pipe_profile *params = grinder->pipe_params; 2267 struct rte_sched_subport_profile *sp = grinder->subport_params; 2268 uint64_t n_periods; 2269 uint32_t i; 2270 2271 /* Subport TB */ 2272 n_periods = (port->time - subport->tb_time) / sp->tb_period; 2273 subport->tb_credits += n_periods * sp->tb_credits_per_period; 2274 subport->tb_credits = RTE_MIN(subport->tb_credits, sp->tb_size); 2275 subport->tb_time += n_periods * sp->tb_period; 2276 2277 /* Pipe TB */ 2278 n_periods = (port->time - pipe->tb_time) / params->tb_period; 2279 pipe->tb_credits += n_periods * params->tb_credits_per_period; 2280 pipe->tb_credits = RTE_MIN(pipe->tb_credits, params->tb_size); 2281 pipe->tb_time += n_periods * params->tb_period; 2282 2283 /* Subport TCs */ 2284 if (unlikely(port->time >= subport->tc_time)) { 2285 subport->tc_ov_wm = 2286 grinder_tc_ov_credits_update(port, subport, pos); 2287 2288 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2289 subport->tc_credits[i] = sp->tc_credits_per_period[i]; 2290 2291 subport->tc_time = port->time + sp->tc_period; 2292 subport->tc_ov_period_id++; 2293 } 2294 2295 /* Pipe TCs */ 2296 if (unlikely(port->time >= pipe->tc_time)) { 2297 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2298 pipe->tc_credits[i] = params->tc_credits_per_period[i]; 2299 pipe->tc_time = port->time + params->tc_period; 2300 } 2301 2302 /* Pipe TCs - Oversubscription */ 2303 if (unlikely(pipe->tc_ov_period_id != subport->tc_ov_period_id)) { 2304 pipe->tc_ov_credits = subport->tc_ov_wm * params->tc_ov_weight; 2305 2306 pipe->tc_ov_period_id = subport->tc_ov_period_id; 2307 } 2308 } 2309 2310 #endif /* RTE_SCHED_TS_CREDITS_UPDATE, RTE_SCHED_SUBPORT_TC_OV */ 2311 2312 2313 #ifndef RTE_SCHED_SUBPORT_TC_OV 2314 2315 static inline int 2316 grinder_credits_check(struct rte_sched_port *port, 2317 struct rte_sched_subport *subport, uint32_t pos) 2318 { 2319 struct rte_sched_grinder *grinder = subport->grinder + pos; 2320 struct rte_sched_pipe *pipe = grinder->pipe; 2321 struct rte_mbuf *pkt = grinder->pkt; 2322 uint32_t tc_index = grinder->tc_index; 2323 uint64_t pkt_len = pkt->pkt_len + port->frame_overhead; 2324 uint64_t subport_tb_credits = subport->tb_credits; 2325 uint64_t subport_tc_credits = subport->tc_credits[tc_index]; 2326 uint64_t pipe_tb_credits = pipe->tb_credits; 2327 uint64_t pipe_tc_credits = pipe->tc_credits[tc_index]; 2328 int enough_credits; 2329 2330 /* Check queue credits */ 2331 enough_credits = (pkt_len <= subport_tb_credits) && 2332 (pkt_len <= subport_tc_credits) && 2333 (pkt_len <= pipe_tb_credits) && 2334 (pkt_len <= pipe_tc_credits); 2335 2336 if (!enough_credits) 2337 return 0; 2338 2339 /* Update port credits */ 2340 subport->tb_credits -= pkt_len; 2341 subport->tc_credits[tc_index] -= pkt_len; 2342 pipe->tb_credits -= pkt_len; 2343 pipe->tc_credits[tc_index] -= pkt_len; 2344 2345 return 1; 2346 } 2347 2348 #else 2349 2350 static inline int 2351 grinder_credits_check(struct rte_sched_port *port, 2352 struct rte_sched_subport *subport, uint32_t pos) 2353 { 2354 struct rte_sched_grinder *grinder = subport->grinder + pos; 2355 struct rte_sched_pipe *pipe = grinder->pipe; 2356 struct rte_mbuf *pkt = grinder->pkt; 2357 uint32_t tc_index = grinder->tc_index; 2358 uint64_t pkt_len = pkt->pkt_len + port->frame_overhead; 2359 uint64_t subport_tb_credits = subport->tb_credits; 2360 uint64_t subport_tc_credits = subport->tc_credits[tc_index]; 2361 uint64_t pipe_tb_credits = pipe->tb_credits; 2362 uint64_t pipe_tc_credits = pipe->tc_credits[tc_index]; 2363 uint64_t pipe_tc_ov_mask1[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 2364 uint64_t pipe_tc_ov_mask2[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE] = {0}; 2365 uint64_t pipe_tc_ov_credits; 2366 uint32_t i; 2367 int enough_credits; 2368 2369 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2370 pipe_tc_ov_mask1[i] = ~0LLU; 2371 2372 pipe_tc_ov_mask1[RTE_SCHED_TRAFFIC_CLASS_BE] = pipe->tc_ov_credits; 2373 pipe_tc_ov_mask2[RTE_SCHED_TRAFFIC_CLASS_BE] = ~0LLU; 2374 pipe_tc_ov_credits = pipe_tc_ov_mask1[tc_index]; 2375 2376 /* Check pipe and subport credits */ 2377 enough_credits = (pkt_len <= subport_tb_credits) && 2378 (pkt_len <= subport_tc_credits) && 2379 (pkt_len <= pipe_tb_credits) && 2380 (pkt_len <= pipe_tc_credits) && 2381 (pkt_len <= pipe_tc_ov_credits); 2382 2383 if (!enough_credits) 2384 return 0; 2385 2386 /* Update pipe and subport credits */ 2387 subport->tb_credits -= pkt_len; 2388 subport->tc_credits[tc_index] -= pkt_len; 2389 pipe->tb_credits -= pkt_len; 2390 pipe->tc_credits[tc_index] -= pkt_len; 2391 pipe->tc_ov_credits -= pipe_tc_ov_mask2[tc_index] & pkt_len; 2392 2393 return 1; 2394 } 2395 2396 #endif /* RTE_SCHED_SUBPORT_TC_OV */ 2397 2398 2399 static inline int 2400 grinder_schedule(struct rte_sched_port *port, 2401 struct rte_sched_subport *subport, uint32_t pos) 2402 { 2403 struct rte_sched_grinder *grinder = subport->grinder + pos; 2404 struct rte_sched_queue *queue = grinder->queue[grinder->qpos]; 2405 struct rte_mbuf *pkt = grinder->pkt; 2406 uint32_t pkt_len = pkt->pkt_len + port->frame_overhead; 2407 uint32_t be_tc_active; 2408 2409 if (!grinder_credits_check(port, subport, pos)) 2410 return 0; 2411 2412 /* Advance port time */ 2413 port->time += pkt_len; 2414 2415 /* Send packet */ 2416 port->pkts_out[port->n_pkts_out++] = pkt; 2417 queue->qr++; 2418 2419 be_tc_active = (grinder->tc_index == RTE_SCHED_TRAFFIC_CLASS_BE) ? ~0x0 : 0x0; 2420 grinder->wrr_tokens[grinder->qpos] += 2421 (pkt_len * grinder->wrr_cost[grinder->qpos]) & be_tc_active; 2422 2423 if (queue->qr == queue->qw) { 2424 uint32_t qindex = grinder->qindex[grinder->qpos]; 2425 2426 rte_bitmap_clear(subport->bmp, qindex); 2427 grinder->qmask &= ~(1 << grinder->qpos); 2428 if (be_tc_active) 2429 grinder->wrr_mask[grinder->qpos] = 0; 2430 rte_sched_port_set_queue_empty_timestamp(port, subport, qindex); 2431 } 2432 2433 /* Reset pipe loop detection */ 2434 subport->pipe_loop = RTE_SCHED_PIPE_INVALID; 2435 grinder->productive = 1; 2436 2437 return 1; 2438 } 2439 2440 #ifdef SCHED_VECTOR_SSE4 2441 2442 static inline int 2443 grinder_pipe_exists(struct rte_sched_subport *subport, uint32_t base_pipe) 2444 { 2445 __m128i index = _mm_set1_epi32(base_pipe); 2446 __m128i pipes = _mm_load_si128((__m128i *)subport->grinder_base_bmp_pos); 2447 __m128i res = _mm_cmpeq_epi32(pipes, index); 2448 2449 pipes = _mm_load_si128((__m128i *)(subport->grinder_base_bmp_pos + 4)); 2450 pipes = _mm_cmpeq_epi32(pipes, index); 2451 res = _mm_or_si128(res, pipes); 2452 2453 if (_mm_testz_si128(res, res)) 2454 return 0; 2455 2456 return 1; 2457 } 2458 2459 #elif defined(SCHED_VECTOR_NEON) 2460 2461 static inline int 2462 grinder_pipe_exists(struct rte_sched_subport *subport, uint32_t base_pipe) 2463 { 2464 uint32x4_t index, pipes; 2465 uint32_t *pos = (uint32_t *)subport->grinder_base_bmp_pos; 2466 2467 index = vmovq_n_u32(base_pipe); 2468 pipes = vld1q_u32(pos); 2469 if (!vminvq_u32(veorq_u32(pipes, index))) 2470 return 1; 2471 2472 pipes = vld1q_u32(pos + 4); 2473 if (!vminvq_u32(veorq_u32(pipes, index))) 2474 return 1; 2475 2476 return 0; 2477 } 2478 2479 #else 2480 2481 static inline int 2482 grinder_pipe_exists(struct rte_sched_subport *subport, uint32_t base_pipe) 2483 { 2484 uint32_t i; 2485 2486 for (i = 0; i < RTE_SCHED_PORT_N_GRINDERS; i++) { 2487 if (subport->grinder_base_bmp_pos[i] == base_pipe) 2488 return 1; 2489 } 2490 2491 return 0; 2492 } 2493 2494 #endif /* RTE_SCHED_OPTIMIZATIONS */ 2495 2496 static inline void 2497 grinder_pcache_populate(struct rte_sched_subport *subport, 2498 uint32_t pos, uint32_t bmp_pos, uint64_t bmp_slab) 2499 { 2500 struct rte_sched_grinder *grinder = subport->grinder + pos; 2501 uint16_t w[4]; 2502 2503 grinder->pcache_w = 0; 2504 grinder->pcache_r = 0; 2505 2506 w[0] = (uint16_t) bmp_slab; 2507 w[1] = (uint16_t) (bmp_slab >> 16); 2508 w[2] = (uint16_t) (bmp_slab >> 32); 2509 w[3] = (uint16_t) (bmp_slab >> 48); 2510 2511 grinder->pcache_qmask[grinder->pcache_w] = w[0]; 2512 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos; 2513 grinder->pcache_w += (w[0] != 0); 2514 2515 grinder->pcache_qmask[grinder->pcache_w] = w[1]; 2516 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 16; 2517 grinder->pcache_w += (w[1] != 0); 2518 2519 grinder->pcache_qmask[grinder->pcache_w] = w[2]; 2520 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 32; 2521 grinder->pcache_w += (w[2] != 0); 2522 2523 grinder->pcache_qmask[grinder->pcache_w] = w[3]; 2524 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 48; 2525 grinder->pcache_w += (w[3] != 0); 2526 } 2527 2528 static inline void 2529 grinder_tccache_populate(struct rte_sched_subport *subport, 2530 uint32_t pos, uint32_t qindex, uint16_t qmask) 2531 { 2532 struct rte_sched_grinder *grinder = subport->grinder + pos; 2533 uint8_t b, i; 2534 2535 grinder->tccache_w = 0; 2536 grinder->tccache_r = 0; 2537 2538 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASS_BE; i++) { 2539 b = (uint8_t) ((qmask >> i) & 0x1); 2540 grinder->tccache_qmask[grinder->tccache_w] = b; 2541 grinder->tccache_qindex[grinder->tccache_w] = qindex + i; 2542 grinder->tccache_w += (b != 0); 2543 } 2544 2545 b = (uint8_t) (qmask >> (RTE_SCHED_TRAFFIC_CLASS_BE)); 2546 grinder->tccache_qmask[grinder->tccache_w] = b; 2547 grinder->tccache_qindex[grinder->tccache_w] = qindex + 2548 RTE_SCHED_TRAFFIC_CLASS_BE; 2549 grinder->tccache_w += (b != 0); 2550 } 2551 2552 static inline int 2553 grinder_next_tc(struct rte_sched_port *port, 2554 struct rte_sched_subport *subport, uint32_t pos) 2555 { 2556 struct rte_sched_grinder *grinder = subport->grinder + pos; 2557 struct rte_mbuf **qbase; 2558 uint32_t qindex; 2559 uint16_t qsize; 2560 2561 if (grinder->tccache_r == grinder->tccache_w) 2562 return 0; 2563 2564 qindex = grinder->tccache_qindex[grinder->tccache_r]; 2565 qbase = rte_sched_subport_pipe_qbase(subport, qindex); 2566 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 2567 2568 grinder->tc_index = rte_sched_port_pipe_tc(port, qindex); 2569 grinder->qmask = grinder->tccache_qmask[grinder->tccache_r]; 2570 grinder->qsize = qsize; 2571 2572 if (grinder->tc_index < RTE_SCHED_TRAFFIC_CLASS_BE) { 2573 grinder->queue[0] = subport->queue + qindex; 2574 grinder->qbase[0] = qbase; 2575 grinder->qindex[0] = qindex; 2576 grinder->tccache_r++; 2577 2578 return 1; 2579 } 2580 2581 grinder->queue[0] = subport->queue + qindex; 2582 grinder->queue[1] = subport->queue + qindex + 1; 2583 grinder->queue[2] = subport->queue + qindex + 2; 2584 grinder->queue[3] = subport->queue + qindex + 3; 2585 2586 grinder->qbase[0] = qbase; 2587 grinder->qbase[1] = qbase + qsize; 2588 grinder->qbase[2] = qbase + 2 * qsize; 2589 grinder->qbase[3] = qbase + 3 * qsize; 2590 2591 grinder->qindex[0] = qindex; 2592 grinder->qindex[1] = qindex + 1; 2593 grinder->qindex[2] = qindex + 2; 2594 grinder->qindex[3] = qindex + 3; 2595 2596 grinder->tccache_r++; 2597 return 1; 2598 } 2599 2600 static inline int 2601 grinder_next_pipe(struct rte_sched_port *port, 2602 struct rte_sched_subport *subport, uint32_t pos) 2603 { 2604 struct rte_sched_grinder *grinder = subport->grinder + pos; 2605 uint32_t pipe_qindex; 2606 uint16_t pipe_qmask; 2607 2608 if (grinder->pcache_r < grinder->pcache_w) { 2609 pipe_qmask = grinder->pcache_qmask[grinder->pcache_r]; 2610 pipe_qindex = grinder->pcache_qindex[grinder->pcache_r]; 2611 grinder->pcache_r++; 2612 } else { 2613 uint64_t bmp_slab = 0; 2614 uint32_t bmp_pos = 0; 2615 2616 /* Get another non-empty pipe group */ 2617 if (unlikely(rte_bitmap_scan(subport->bmp, &bmp_pos, &bmp_slab) <= 0)) 2618 return 0; 2619 2620 #ifdef RTE_SCHED_DEBUG 2621 debug_check_queue_slab(subport, bmp_pos, bmp_slab); 2622 #endif 2623 2624 /* Return if pipe group already in one of the other grinders */ 2625 subport->grinder_base_bmp_pos[pos] = RTE_SCHED_BMP_POS_INVALID; 2626 if (unlikely(grinder_pipe_exists(subport, bmp_pos))) 2627 return 0; 2628 2629 subport->grinder_base_bmp_pos[pos] = bmp_pos; 2630 2631 /* Install new pipe group into grinder's pipe cache */ 2632 grinder_pcache_populate(subport, pos, bmp_pos, bmp_slab); 2633 2634 pipe_qmask = grinder->pcache_qmask[0]; 2635 pipe_qindex = grinder->pcache_qindex[0]; 2636 grinder->pcache_r = 1; 2637 } 2638 2639 /* Install new pipe in the grinder */ 2640 grinder->pindex = pipe_qindex >> 4; 2641 grinder->subport = subport; 2642 grinder->pipe = subport->pipe + grinder->pindex; 2643 grinder->pipe_params = NULL; /* to be set after the pipe structure is prefetched */ 2644 grinder->productive = 0; 2645 2646 grinder_tccache_populate(subport, pos, pipe_qindex, pipe_qmask); 2647 grinder_next_tc(port, subport, pos); 2648 2649 /* Check for pipe exhaustion */ 2650 if (grinder->pindex == subport->pipe_loop) { 2651 subport->pipe_exhaustion = 1; 2652 subport->pipe_loop = RTE_SCHED_PIPE_INVALID; 2653 } 2654 2655 return 1; 2656 } 2657 2658 2659 static inline void 2660 grinder_wrr_load(struct rte_sched_subport *subport, uint32_t pos) 2661 { 2662 struct rte_sched_grinder *grinder = subport->grinder + pos; 2663 struct rte_sched_pipe *pipe = grinder->pipe; 2664 struct rte_sched_pipe_profile *pipe_params = grinder->pipe_params; 2665 uint32_t qmask = grinder->qmask; 2666 2667 grinder->wrr_tokens[0] = 2668 ((uint16_t) pipe->wrr_tokens[0]) << RTE_SCHED_WRR_SHIFT; 2669 grinder->wrr_tokens[1] = 2670 ((uint16_t) pipe->wrr_tokens[1]) << RTE_SCHED_WRR_SHIFT; 2671 grinder->wrr_tokens[2] = 2672 ((uint16_t) pipe->wrr_tokens[2]) << RTE_SCHED_WRR_SHIFT; 2673 grinder->wrr_tokens[3] = 2674 ((uint16_t) pipe->wrr_tokens[3]) << RTE_SCHED_WRR_SHIFT; 2675 2676 grinder->wrr_mask[0] = (qmask & 0x1) * 0xFFFF; 2677 grinder->wrr_mask[1] = ((qmask >> 1) & 0x1) * 0xFFFF; 2678 grinder->wrr_mask[2] = ((qmask >> 2) & 0x1) * 0xFFFF; 2679 grinder->wrr_mask[3] = ((qmask >> 3) & 0x1) * 0xFFFF; 2680 2681 grinder->wrr_cost[0] = pipe_params->wrr_cost[0]; 2682 grinder->wrr_cost[1] = pipe_params->wrr_cost[1]; 2683 grinder->wrr_cost[2] = pipe_params->wrr_cost[2]; 2684 grinder->wrr_cost[3] = pipe_params->wrr_cost[3]; 2685 } 2686 2687 static inline void 2688 grinder_wrr_store(struct rte_sched_subport *subport, uint32_t pos) 2689 { 2690 struct rte_sched_grinder *grinder = subport->grinder + pos; 2691 struct rte_sched_pipe *pipe = grinder->pipe; 2692 2693 pipe->wrr_tokens[0] = 2694 (grinder->wrr_tokens[0] & grinder->wrr_mask[0]) >> 2695 RTE_SCHED_WRR_SHIFT; 2696 pipe->wrr_tokens[1] = 2697 (grinder->wrr_tokens[1] & grinder->wrr_mask[1]) >> 2698 RTE_SCHED_WRR_SHIFT; 2699 pipe->wrr_tokens[2] = 2700 (grinder->wrr_tokens[2] & grinder->wrr_mask[2]) >> 2701 RTE_SCHED_WRR_SHIFT; 2702 pipe->wrr_tokens[3] = 2703 (grinder->wrr_tokens[3] & grinder->wrr_mask[3]) >> 2704 RTE_SCHED_WRR_SHIFT; 2705 } 2706 2707 static inline void 2708 grinder_wrr(struct rte_sched_subport *subport, uint32_t pos) 2709 { 2710 struct rte_sched_grinder *grinder = subport->grinder + pos; 2711 uint16_t wrr_tokens_min; 2712 2713 grinder->wrr_tokens[0] |= ~grinder->wrr_mask[0]; 2714 grinder->wrr_tokens[1] |= ~grinder->wrr_mask[1]; 2715 grinder->wrr_tokens[2] |= ~grinder->wrr_mask[2]; 2716 grinder->wrr_tokens[3] |= ~grinder->wrr_mask[3]; 2717 2718 grinder->qpos = rte_min_pos_4_u16(grinder->wrr_tokens); 2719 wrr_tokens_min = grinder->wrr_tokens[grinder->qpos]; 2720 2721 grinder->wrr_tokens[0] -= wrr_tokens_min; 2722 grinder->wrr_tokens[1] -= wrr_tokens_min; 2723 grinder->wrr_tokens[2] -= wrr_tokens_min; 2724 grinder->wrr_tokens[3] -= wrr_tokens_min; 2725 } 2726 2727 2728 #define grinder_evict(subport, pos) 2729 2730 static inline void 2731 grinder_prefetch_pipe(struct rte_sched_subport *subport, uint32_t pos) 2732 { 2733 struct rte_sched_grinder *grinder = subport->grinder + pos; 2734 2735 rte_prefetch0(grinder->pipe); 2736 rte_prefetch0(grinder->queue[0]); 2737 } 2738 2739 static inline void 2740 grinder_prefetch_tc_queue_arrays(struct rte_sched_subport *subport, uint32_t pos) 2741 { 2742 struct rte_sched_grinder *grinder = subport->grinder + pos; 2743 uint16_t qsize, qr[RTE_SCHED_MAX_QUEUES_PER_TC]; 2744 2745 qsize = grinder->qsize; 2746 grinder->qpos = 0; 2747 2748 if (grinder->tc_index < RTE_SCHED_TRAFFIC_CLASS_BE) { 2749 qr[0] = grinder->queue[0]->qr & (qsize - 1); 2750 2751 rte_prefetch0(grinder->qbase[0] + qr[0]); 2752 return; 2753 } 2754 2755 qr[0] = grinder->queue[0]->qr & (qsize - 1); 2756 qr[1] = grinder->queue[1]->qr & (qsize - 1); 2757 qr[2] = grinder->queue[2]->qr & (qsize - 1); 2758 qr[3] = grinder->queue[3]->qr & (qsize - 1); 2759 2760 rte_prefetch0(grinder->qbase[0] + qr[0]); 2761 rte_prefetch0(grinder->qbase[1] + qr[1]); 2762 2763 grinder_wrr_load(subport, pos); 2764 grinder_wrr(subport, pos); 2765 2766 rte_prefetch0(grinder->qbase[2] + qr[2]); 2767 rte_prefetch0(grinder->qbase[3] + qr[3]); 2768 } 2769 2770 static inline void 2771 grinder_prefetch_mbuf(struct rte_sched_subport *subport, uint32_t pos) 2772 { 2773 struct rte_sched_grinder *grinder = subport->grinder + pos; 2774 uint32_t qpos = grinder->qpos; 2775 struct rte_mbuf **qbase = grinder->qbase[qpos]; 2776 uint16_t qsize = grinder->qsize; 2777 uint16_t qr = grinder->queue[qpos]->qr & (qsize - 1); 2778 2779 grinder->pkt = qbase[qr]; 2780 rte_prefetch0(grinder->pkt); 2781 2782 if (unlikely((qr & 0x7) == 7)) { 2783 uint16_t qr_next = (grinder->queue[qpos]->qr + 1) & (qsize - 1); 2784 2785 rte_prefetch0(qbase + qr_next); 2786 } 2787 } 2788 2789 static inline uint32_t 2790 grinder_handle(struct rte_sched_port *port, 2791 struct rte_sched_subport *subport, uint32_t pos) 2792 { 2793 struct rte_sched_grinder *grinder = subport->grinder + pos; 2794 2795 switch (grinder->state) { 2796 case e_GRINDER_PREFETCH_PIPE: 2797 { 2798 if (grinder_next_pipe(port, subport, pos)) { 2799 grinder_prefetch_pipe(subport, pos); 2800 subport->busy_grinders++; 2801 2802 grinder->state = e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS; 2803 return 0; 2804 } 2805 2806 return 0; 2807 } 2808 2809 case e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS: 2810 { 2811 struct rte_sched_pipe *pipe = grinder->pipe; 2812 2813 grinder->pipe_params = subport->pipe_profiles + pipe->profile; 2814 grinder->subport_params = port->subport_profiles + 2815 subport->profile; 2816 2817 grinder_prefetch_tc_queue_arrays(subport, pos); 2818 grinder_credits_update(port, subport, pos); 2819 2820 grinder->state = e_GRINDER_PREFETCH_MBUF; 2821 return 0; 2822 } 2823 2824 case e_GRINDER_PREFETCH_MBUF: 2825 { 2826 grinder_prefetch_mbuf(subport, pos); 2827 2828 grinder->state = e_GRINDER_READ_MBUF; 2829 return 0; 2830 } 2831 2832 case e_GRINDER_READ_MBUF: 2833 { 2834 uint32_t wrr_active, result = 0; 2835 2836 result = grinder_schedule(port, subport, pos); 2837 2838 wrr_active = (grinder->tc_index == RTE_SCHED_TRAFFIC_CLASS_BE); 2839 2840 /* Look for next packet within the same TC */ 2841 if (result && grinder->qmask) { 2842 if (wrr_active) 2843 grinder_wrr(subport, pos); 2844 2845 grinder_prefetch_mbuf(subport, pos); 2846 2847 return 1; 2848 } 2849 2850 if (wrr_active) 2851 grinder_wrr_store(subport, pos); 2852 2853 /* Look for another active TC within same pipe */ 2854 if (grinder_next_tc(port, subport, pos)) { 2855 grinder_prefetch_tc_queue_arrays(subport, pos); 2856 2857 grinder->state = e_GRINDER_PREFETCH_MBUF; 2858 return result; 2859 } 2860 2861 if (grinder->productive == 0 && 2862 subport->pipe_loop == RTE_SCHED_PIPE_INVALID) 2863 subport->pipe_loop = grinder->pindex; 2864 2865 grinder_evict(subport, pos); 2866 2867 /* Look for another active pipe */ 2868 if (grinder_next_pipe(port, subport, pos)) { 2869 grinder_prefetch_pipe(subport, pos); 2870 2871 grinder->state = e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS; 2872 return result; 2873 } 2874 2875 /* No active pipe found */ 2876 subport->busy_grinders--; 2877 2878 grinder->state = e_GRINDER_PREFETCH_PIPE; 2879 return result; 2880 } 2881 2882 default: 2883 rte_panic("Algorithmic error (invalid state)\n"); 2884 return 0; 2885 } 2886 } 2887 2888 static inline void 2889 rte_sched_port_time_resync(struct rte_sched_port *port) 2890 { 2891 uint64_t cycles = rte_get_tsc_cycles(); 2892 uint64_t cycles_diff; 2893 uint64_t bytes_diff; 2894 uint32_t i; 2895 2896 if (cycles < port->time_cpu_cycles) 2897 port->time_cpu_cycles = 0; 2898 2899 cycles_diff = cycles - port->time_cpu_cycles; 2900 /* Compute elapsed time in bytes */ 2901 bytes_diff = rte_reciprocal_divide(cycles_diff << RTE_SCHED_TIME_SHIFT, 2902 port->inv_cycles_per_byte); 2903 2904 /* Advance port time */ 2905 port->time_cpu_cycles += 2906 (bytes_diff * port->cycles_per_byte) >> RTE_SCHED_TIME_SHIFT; 2907 port->time_cpu_bytes += bytes_diff; 2908 if (port->time < port->time_cpu_bytes) 2909 port->time = port->time_cpu_bytes; 2910 2911 /* Reset pipe loop detection */ 2912 for (i = 0; i < port->n_subports_per_port; i++) 2913 port->subports[i]->pipe_loop = RTE_SCHED_PIPE_INVALID; 2914 } 2915 2916 static inline int 2917 rte_sched_port_exceptions(struct rte_sched_subport *subport, int second_pass) 2918 { 2919 int exceptions; 2920 2921 /* Check if any exception flag is set */ 2922 exceptions = (second_pass && subport->busy_grinders == 0) || 2923 (subport->pipe_exhaustion == 1); 2924 2925 /* Clear exception flags */ 2926 subport->pipe_exhaustion = 0; 2927 2928 return exceptions; 2929 } 2930 2931 int 2932 rte_sched_port_dequeue(struct rte_sched_port *port, struct rte_mbuf **pkts, uint32_t n_pkts) 2933 { 2934 struct rte_sched_subport *subport; 2935 uint32_t subport_id = port->subport_id; 2936 uint32_t i, n_subports = 0, count; 2937 2938 port->pkts_out = pkts; 2939 port->n_pkts_out = 0; 2940 2941 rte_sched_port_time_resync(port); 2942 2943 /* Take each queue in the grinder one step further */ 2944 for (i = 0, count = 0; ; i++) { 2945 subport = port->subports[subport_id]; 2946 2947 count += grinder_handle(port, subport, 2948 i & (RTE_SCHED_PORT_N_GRINDERS - 1)); 2949 2950 if (count == n_pkts) { 2951 subport_id++; 2952 2953 if (subport_id == port->n_subports_per_port) 2954 subport_id = 0; 2955 2956 port->subport_id = subport_id; 2957 break; 2958 } 2959 2960 if (rte_sched_port_exceptions(subport, i >= RTE_SCHED_PORT_N_GRINDERS)) { 2961 i = 0; 2962 subport_id++; 2963 n_subports++; 2964 } 2965 2966 if (subport_id == port->n_subports_per_port) 2967 subport_id = 0; 2968 2969 if (n_subports == port->n_subports_per_port) { 2970 port->subport_id = subport_id; 2971 break; 2972 } 2973 } 2974 2975 return count; 2976 } 2977