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_malloc.h> 11 #include <rte_cycles.h> 12 #include <rte_prefetch.h> 13 #include <rte_branch_prediction.h> 14 #include <rte_mbuf.h> 15 #include <rte_bitmap.h> 16 #include <rte_reciprocal.h> 17 18 #include "rte_sched.h" 19 #include "rte_sched_common.h" 20 #include "rte_approx.h" 21 22 #ifdef __INTEL_COMPILER 23 #pragma warning(disable:2259) /* conversion may lose significant bits */ 24 #endif 25 26 #ifndef RTE_SCHED_PORT_N_GRINDERS 27 #define RTE_SCHED_PORT_N_GRINDERS 8 28 #endif 29 30 #define RTE_SCHED_TB_RATE_CONFIG_ERR (1e-7) 31 #define RTE_SCHED_WRR_SHIFT 3 32 #define RTE_SCHED_MAX_QUEUES_PER_TC RTE_SCHED_BE_QUEUES_PER_PIPE 33 #define RTE_SCHED_GRINDER_PCACHE_SIZE (64 / RTE_SCHED_QUEUES_PER_PIPE) 34 #define RTE_SCHED_PIPE_INVALID UINT32_MAX 35 #define RTE_SCHED_BMP_POS_INVALID UINT32_MAX 36 37 /* Scaling for cycles_per_byte calculation 38 * Chosen so that minimum rate is 480 bit/sec 39 */ 40 #define RTE_SCHED_TIME_SHIFT 8 41 42 struct rte_sched_pipe_profile { 43 /* Token bucket (TB) */ 44 uint64_t tb_period; 45 uint64_t tb_credits_per_period; 46 uint64_t tb_size; 47 48 /* Pipe traffic classes */ 49 uint64_t tc_period; 50 uint64_t tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 51 uint8_t tc_ov_weight; 52 53 /* Pipe best-effort traffic class queues */ 54 uint8_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 55 }; 56 57 struct rte_sched_pipe { 58 /* Token bucket (TB) */ 59 uint64_t tb_time; /* time of last update */ 60 uint64_t tb_credits; 61 62 /* Pipe profile and flags */ 63 uint32_t profile; 64 65 /* Traffic classes (TCs) */ 66 uint64_t tc_time; /* time of next update */ 67 uint64_t tc_credits[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 68 69 /* Weighted Round Robin (WRR) */ 70 uint8_t wrr_tokens[RTE_SCHED_BE_QUEUES_PER_PIPE]; 71 72 /* TC oversubscription */ 73 uint64_t tc_ov_credits; 74 uint8_t tc_ov_period_id; 75 } __rte_cache_aligned; 76 77 struct rte_sched_queue { 78 uint16_t qw; 79 uint16_t qr; 80 }; 81 82 struct rte_sched_queue_extra { 83 struct rte_sched_queue_stats stats; 84 #ifdef RTE_SCHED_CMAN 85 RTE_STD_C11 86 union { 87 struct rte_red red; 88 struct rte_pie pie; 89 }; 90 #endif 91 }; 92 93 enum grinder_state { 94 e_GRINDER_PREFETCH_PIPE = 0, 95 e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS, 96 e_GRINDER_PREFETCH_MBUF, 97 e_GRINDER_READ_MBUF 98 }; 99 100 struct rte_sched_subport_profile { 101 /* Token bucket (TB) */ 102 uint64_t tb_period; 103 uint64_t tb_credits_per_period; 104 uint64_t tb_size; 105 106 uint64_t tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 107 uint64_t tc_period; 108 }; 109 110 struct rte_sched_grinder { 111 /* Pipe cache */ 112 uint16_t pcache_qmask[RTE_SCHED_GRINDER_PCACHE_SIZE]; 113 uint32_t pcache_qindex[RTE_SCHED_GRINDER_PCACHE_SIZE]; 114 uint32_t pcache_w; 115 uint32_t pcache_r; 116 117 /* Current pipe */ 118 enum grinder_state state; 119 uint32_t productive; 120 uint32_t pindex; 121 struct rte_sched_subport *subport; 122 struct rte_sched_subport_profile *subport_params; 123 struct rte_sched_pipe *pipe; 124 struct rte_sched_pipe_profile *pipe_params; 125 126 /* TC cache */ 127 uint8_t tccache_qmask[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 128 uint32_t tccache_qindex[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 129 uint32_t tccache_w; 130 uint32_t tccache_r; 131 132 /* Current TC */ 133 uint32_t tc_index; 134 struct rte_sched_queue *queue[RTE_SCHED_MAX_QUEUES_PER_TC]; 135 struct rte_mbuf **qbase[RTE_SCHED_MAX_QUEUES_PER_TC]; 136 uint32_t qindex[RTE_SCHED_MAX_QUEUES_PER_TC]; 137 uint16_t qsize; 138 uint32_t qmask; 139 uint32_t qpos; 140 struct rte_mbuf *pkt; 141 142 /* WRR */ 143 uint16_t wrr_tokens[RTE_SCHED_BE_QUEUES_PER_PIPE]; 144 uint16_t wrr_mask[RTE_SCHED_BE_QUEUES_PER_PIPE]; 145 uint8_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 146 }; 147 148 struct rte_sched_subport { 149 /* Token bucket (TB) */ 150 uint64_t tb_time; /* time of last update */ 151 uint64_t tb_credits; 152 153 /* Traffic classes (TCs) */ 154 uint64_t tc_time; /* time of next update */ 155 uint64_t tc_credits[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 156 157 /* TC oversubscription */ 158 uint64_t tc_ov_wm; 159 uint64_t tc_ov_wm_min; 160 uint64_t tc_ov_wm_max; 161 uint8_t tc_ov_period_id; 162 uint8_t tc_ov; 163 uint32_t tc_ov_n; 164 double tc_ov_rate; 165 166 /* Statistics */ 167 struct rte_sched_subport_stats stats __rte_cache_aligned; 168 169 /* subport profile */ 170 uint32_t profile; 171 /* Subport pipes */ 172 uint32_t n_pipes_per_subport_enabled; 173 uint32_t n_pipe_profiles; 174 uint32_t n_max_pipe_profiles; 175 176 /* Pipe best-effort TC rate */ 177 uint64_t pipe_tc_be_rate_max; 178 179 /* Pipe queues size */ 180 uint16_t qsize[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 181 182 #ifdef RTE_SCHED_CMAN 183 bool cman_enabled; 184 enum rte_sched_cman_mode cman; 185 186 RTE_STD_C11 187 union { 188 struct rte_red_config red_config[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE][RTE_COLORS]; 189 struct rte_pie_config pie_config[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 190 }; 191 #endif 192 193 /* Scheduling loop detection */ 194 uint32_t pipe_loop; 195 uint32_t pipe_exhaustion; 196 197 /* Bitmap */ 198 struct rte_bitmap *bmp; 199 uint32_t grinder_base_bmp_pos[RTE_SCHED_PORT_N_GRINDERS] __rte_aligned_16; 200 201 /* Grinders */ 202 struct rte_sched_grinder grinder[RTE_SCHED_PORT_N_GRINDERS]; 203 uint32_t busy_grinders; 204 205 /* Queue base calculation */ 206 uint32_t qsize_add[RTE_SCHED_QUEUES_PER_PIPE]; 207 uint32_t qsize_sum; 208 209 struct rte_sched_pipe *pipe; 210 struct rte_sched_queue *queue; 211 struct rte_sched_queue_extra *queue_extra; 212 struct rte_sched_pipe_profile *pipe_profiles; 213 uint8_t *bmp_array; 214 struct rte_mbuf **queue_array; 215 uint8_t memory[0] __rte_cache_aligned; 216 217 /* TC oversubscription activation */ 218 int tc_ov_enabled; 219 } __rte_cache_aligned; 220 221 struct rte_sched_port { 222 /* User parameters */ 223 uint32_t n_subports_per_port; 224 uint32_t n_pipes_per_subport; 225 uint32_t n_pipes_per_subport_log2; 226 uint16_t pipe_queue[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 227 uint8_t pipe_tc[RTE_SCHED_QUEUES_PER_PIPE]; 228 uint8_t tc_queue[RTE_SCHED_QUEUES_PER_PIPE]; 229 uint32_t n_subport_profiles; 230 uint32_t n_max_subport_profiles; 231 uint64_t rate; 232 uint32_t mtu; 233 uint32_t frame_overhead; 234 int socket; 235 236 /* Timing */ 237 uint64_t time_cpu_cycles; /* Current CPU time measured in CPU cycles */ 238 uint64_t time_cpu_bytes; /* Current CPU time measured in bytes */ 239 uint64_t time; /* Current NIC TX time measured in bytes */ 240 struct rte_reciprocal inv_cycles_per_byte; /* CPU cycles per byte */ 241 uint64_t cycles_per_byte; 242 243 /* Grinders */ 244 struct rte_mbuf **pkts_out; 245 uint32_t n_pkts_out; 246 uint32_t subport_id; 247 248 /* Large data structures */ 249 struct rte_sched_subport_profile *subport_profiles; 250 struct rte_sched_subport *subports[0] __rte_cache_aligned; 251 } __rte_cache_aligned; 252 253 enum rte_sched_subport_array { 254 e_RTE_SCHED_SUBPORT_ARRAY_PIPE = 0, 255 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE, 256 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA, 257 e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES, 258 e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY, 259 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY, 260 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL, 261 }; 262 263 static inline uint32_t 264 rte_sched_subport_pipe_queues(struct rte_sched_subport *subport) 265 { 266 return RTE_SCHED_QUEUES_PER_PIPE * subport->n_pipes_per_subport_enabled; 267 } 268 269 static inline struct rte_mbuf ** 270 rte_sched_subport_pipe_qbase(struct rte_sched_subport *subport, uint32_t qindex) 271 { 272 uint32_t pindex = qindex >> 4; 273 uint32_t qpos = qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1); 274 275 return (subport->queue_array + pindex * 276 subport->qsize_sum + subport->qsize_add[qpos]); 277 } 278 279 static inline uint16_t 280 rte_sched_subport_pipe_qsize(struct rte_sched_port *port, 281 struct rte_sched_subport *subport, uint32_t qindex) 282 { 283 uint32_t tc = port->pipe_tc[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 284 285 return subport->qsize[tc]; 286 } 287 288 static inline uint32_t 289 rte_sched_port_queues_per_port(struct rte_sched_port *port) 290 { 291 uint32_t n_queues = 0, i; 292 293 for (i = 0; i < port->n_subports_per_port; i++) 294 n_queues += rte_sched_subport_pipe_queues(port->subports[i]); 295 296 return n_queues; 297 } 298 299 static inline uint16_t 300 rte_sched_port_pipe_queue(struct rte_sched_port *port, uint32_t traffic_class) 301 { 302 uint16_t pipe_queue = port->pipe_queue[traffic_class]; 303 304 return pipe_queue; 305 } 306 307 static inline uint8_t 308 rte_sched_port_pipe_tc(struct rte_sched_port *port, uint32_t qindex) 309 { 310 uint8_t pipe_tc = port->pipe_tc[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 311 312 return pipe_tc; 313 } 314 315 static inline uint8_t 316 rte_sched_port_tc_queue(struct rte_sched_port *port, uint32_t qindex) 317 { 318 uint8_t tc_queue = port->tc_queue[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 319 320 return tc_queue; 321 } 322 323 static int 324 pipe_profile_check(struct rte_sched_pipe_params *params, 325 uint64_t rate, uint16_t *qsize) 326 { 327 uint32_t i; 328 329 /* Pipe parameters */ 330 if (params == NULL) { 331 RTE_LOG(ERR, SCHED, 332 "%s: Incorrect value for parameter params\n", __func__); 333 return -EINVAL; 334 } 335 336 /* TB rate: non-zero, not greater than port rate */ 337 if (params->tb_rate == 0 || 338 params->tb_rate > rate) { 339 RTE_LOG(ERR, SCHED, 340 "%s: Incorrect value for tb rate\n", __func__); 341 return -EINVAL; 342 } 343 344 /* TB size: non-zero */ 345 if (params->tb_size == 0) { 346 RTE_LOG(ERR, SCHED, 347 "%s: Incorrect value for tb size\n", __func__); 348 return -EINVAL; 349 } 350 351 /* TC rate: non-zero if qsize non-zero, less than pipe rate */ 352 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 353 if ((qsize[i] == 0 && params->tc_rate[i] != 0) || 354 (qsize[i] != 0 && (params->tc_rate[i] == 0 || 355 params->tc_rate[i] > params->tb_rate))) { 356 RTE_LOG(ERR, SCHED, 357 "%s: Incorrect value for qsize or tc_rate\n", __func__); 358 return -EINVAL; 359 } 360 } 361 362 if (params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE] == 0 || 363 qsize[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 364 RTE_LOG(ERR, SCHED, 365 "%s: Incorrect value for be traffic class rate\n", __func__); 366 return -EINVAL; 367 } 368 369 /* TC period: non-zero */ 370 if (params->tc_period == 0) { 371 RTE_LOG(ERR, SCHED, 372 "%s: Incorrect value for tc period\n", __func__); 373 return -EINVAL; 374 } 375 376 /* Best effort tc oversubscription weight: non-zero */ 377 if (params->tc_ov_weight == 0) { 378 RTE_LOG(ERR, SCHED, 379 "%s: Incorrect value for tc ov weight\n", __func__); 380 return -EINVAL; 381 } 382 383 /* Queue WRR weights: non-zero */ 384 for (i = 0; i < RTE_SCHED_BE_QUEUES_PER_PIPE; i++) { 385 if (params->wrr_weights[i] == 0) { 386 RTE_LOG(ERR, SCHED, 387 "%s: Incorrect value for wrr weight\n", __func__); 388 return -EINVAL; 389 } 390 } 391 392 return 0; 393 } 394 395 static int 396 subport_profile_check(struct rte_sched_subport_profile_params *params, 397 uint64_t rate) 398 { 399 uint32_t i; 400 401 /* Check user parameters */ 402 if (params == NULL) { 403 RTE_LOG(ERR, SCHED, "%s: " 404 "Incorrect value for parameter params\n", __func__); 405 return -EINVAL; 406 } 407 408 if (params->tb_rate == 0 || params->tb_rate > rate) { 409 RTE_LOG(ERR, SCHED, "%s: " 410 "Incorrect value for tb rate\n", __func__); 411 return -EINVAL; 412 } 413 414 if (params->tb_size == 0) { 415 RTE_LOG(ERR, SCHED, "%s: " 416 "Incorrect value for tb size\n", __func__); 417 return -EINVAL; 418 } 419 420 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 421 uint64_t tc_rate = params->tc_rate[i]; 422 423 if (tc_rate == 0 || (tc_rate > params->tb_rate)) { 424 RTE_LOG(ERR, SCHED, "%s: " 425 "Incorrect value for tc rate\n", __func__); 426 return -EINVAL; 427 } 428 } 429 430 if (params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 431 RTE_LOG(ERR, SCHED, "%s: " 432 "Incorrect tc rate(best effort)\n", __func__); 433 return -EINVAL; 434 } 435 436 if (params->tc_period == 0) { 437 RTE_LOG(ERR, SCHED, "%s: " 438 "Incorrect value for tc period\n", __func__); 439 return -EINVAL; 440 } 441 442 return 0; 443 } 444 445 static int 446 rte_sched_port_check_params(struct rte_sched_port_params *params) 447 { 448 uint32_t i; 449 450 if (params == NULL) { 451 RTE_LOG(ERR, SCHED, 452 "%s: Incorrect value for parameter params\n", __func__); 453 return -EINVAL; 454 } 455 456 /* socket */ 457 if (params->socket < 0) { 458 RTE_LOG(ERR, SCHED, 459 "%s: Incorrect value for socket id\n", __func__); 460 return -EINVAL; 461 } 462 463 /* rate */ 464 if (params->rate == 0) { 465 RTE_LOG(ERR, SCHED, 466 "%s: Incorrect value for rate\n", __func__); 467 return -EINVAL; 468 } 469 470 /* mtu */ 471 if (params->mtu == 0) { 472 RTE_LOG(ERR, SCHED, 473 "%s: Incorrect value for mtu\n", __func__); 474 return -EINVAL; 475 } 476 477 /* n_subports_per_port: non-zero, limited to 16 bits, power of 2 */ 478 if (params->n_subports_per_port == 0 || 479 params->n_subports_per_port > 1u << 16 || 480 !rte_is_power_of_2(params->n_subports_per_port)) { 481 RTE_LOG(ERR, SCHED, 482 "%s: Incorrect value for number of subports\n", __func__); 483 return -EINVAL; 484 } 485 486 if (params->subport_profiles == NULL || 487 params->n_subport_profiles == 0 || 488 params->n_max_subport_profiles == 0 || 489 params->n_subport_profiles > params->n_max_subport_profiles) { 490 RTE_LOG(ERR, SCHED, 491 "%s: Incorrect value for subport profiles\n", __func__); 492 return -EINVAL; 493 } 494 495 for (i = 0; i < params->n_subport_profiles; i++) { 496 struct rte_sched_subport_profile_params *p = 497 params->subport_profiles + i; 498 int status; 499 500 status = subport_profile_check(p, params->rate); 501 if (status != 0) { 502 RTE_LOG(ERR, SCHED, 503 "%s: subport profile check failed(%d)\n", 504 __func__, status); 505 return -EINVAL; 506 } 507 } 508 509 /* n_pipes_per_subport: non-zero, power of 2 */ 510 if (params->n_pipes_per_subport == 0 || 511 !rte_is_power_of_2(params->n_pipes_per_subport)) { 512 RTE_LOG(ERR, SCHED, 513 "%s: Incorrect value for maximum pipes number\n", __func__); 514 return -EINVAL; 515 } 516 517 return 0; 518 } 519 520 static uint32_t 521 rte_sched_subport_get_array_base(struct rte_sched_subport_params *params, 522 enum rte_sched_subport_array array) 523 { 524 uint32_t n_pipes_per_subport = params->n_pipes_per_subport_enabled; 525 uint32_t n_subport_pipe_queues = 526 RTE_SCHED_QUEUES_PER_PIPE * n_pipes_per_subport; 527 528 uint32_t size_pipe = n_pipes_per_subport * sizeof(struct rte_sched_pipe); 529 uint32_t size_queue = 530 n_subport_pipe_queues * sizeof(struct rte_sched_queue); 531 uint32_t size_queue_extra 532 = n_subport_pipe_queues * sizeof(struct rte_sched_queue_extra); 533 uint32_t size_pipe_profiles = params->n_max_pipe_profiles * 534 sizeof(struct rte_sched_pipe_profile); 535 uint32_t size_bmp_array = 536 rte_bitmap_get_memory_footprint(n_subport_pipe_queues); 537 uint32_t size_per_pipe_queue_array, size_queue_array; 538 539 uint32_t base, i; 540 541 size_per_pipe_queue_array = 0; 542 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 543 if (i < RTE_SCHED_TRAFFIC_CLASS_BE) 544 size_per_pipe_queue_array += 545 params->qsize[i] * sizeof(struct rte_mbuf *); 546 else 547 size_per_pipe_queue_array += RTE_SCHED_MAX_QUEUES_PER_TC * 548 params->qsize[i] * sizeof(struct rte_mbuf *); 549 } 550 size_queue_array = n_pipes_per_subport * size_per_pipe_queue_array; 551 552 base = 0; 553 554 if (array == e_RTE_SCHED_SUBPORT_ARRAY_PIPE) 555 return base; 556 base += RTE_CACHE_LINE_ROUNDUP(size_pipe); 557 558 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE) 559 return base; 560 base += RTE_CACHE_LINE_ROUNDUP(size_queue); 561 562 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA) 563 return base; 564 base += RTE_CACHE_LINE_ROUNDUP(size_queue_extra); 565 566 if (array == e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES) 567 return base; 568 base += RTE_CACHE_LINE_ROUNDUP(size_pipe_profiles); 569 570 if (array == e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY) 571 return base; 572 base += RTE_CACHE_LINE_ROUNDUP(size_bmp_array); 573 574 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY) 575 return base; 576 base += RTE_CACHE_LINE_ROUNDUP(size_queue_array); 577 578 return base; 579 } 580 581 static void 582 rte_sched_subport_config_qsize(struct rte_sched_subport *subport) 583 { 584 uint32_t i; 585 586 subport->qsize_add[0] = 0; 587 588 /* Strict priority traffic class */ 589 for (i = 1; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 590 subport->qsize_add[i] = subport->qsize_add[i-1] + subport->qsize[i-1]; 591 592 /* Best-effort traffic class */ 593 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 1] = 594 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE] + 595 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 596 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 2] = 597 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 1] + 598 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 599 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 3] = 600 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 2] + 601 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 602 603 subport->qsize_sum = subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 3] + 604 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 605 } 606 607 static void 608 rte_sched_port_log_pipe_profile(struct rte_sched_subport *subport, uint32_t i) 609 { 610 struct rte_sched_pipe_profile *p = subport->pipe_profiles + i; 611 612 RTE_LOG(DEBUG, SCHED, "Low level config for pipe profile %u:\n" 613 " Token bucket: period = %"PRIu64", credits per period = %"PRIu64", size = %"PRIu64"\n" 614 " Traffic classes: period = %"PRIu64",\n" 615 " credits per period = [%"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 616 ", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 617 ", %"PRIu64", %"PRIu64", %"PRIu64"]\n" 618 " Best-effort traffic class oversubscription: weight = %hhu\n" 619 " WRR cost: [%hhu, %hhu, %hhu, %hhu]\n", 620 i, 621 622 /* Token bucket */ 623 p->tb_period, 624 p->tb_credits_per_period, 625 p->tb_size, 626 627 /* Traffic classes */ 628 p->tc_period, 629 p->tc_credits_per_period[0], 630 p->tc_credits_per_period[1], 631 p->tc_credits_per_period[2], 632 p->tc_credits_per_period[3], 633 p->tc_credits_per_period[4], 634 p->tc_credits_per_period[5], 635 p->tc_credits_per_period[6], 636 p->tc_credits_per_period[7], 637 p->tc_credits_per_period[8], 638 p->tc_credits_per_period[9], 639 p->tc_credits_per_period[10], 640 p->tc_credits_per_period[11], 641 p->tc_credits_per_period[12], 642 643 /* Best-effort traffic class oversubscription */ 644 p->tc_ov_weight, 645 646 /* WRR */ 647 p->wrr_cost[0], p->wrr_cost[1], p->wrr_cost[2], p->wrr_cost[3]); 648 } 649 650 static void 651 rte_sched_port_log_subport_profile(struct rte_sched_port *port, uint32_t i) 652 { 653 struct rte_sched_subport_profile *p = port->subport_profiles + i; 654 655 RTE_LOG(DEBUG, SCHED, "Low level config for subport profile %u:\n" 656 "Token bucket: period = %"PRIu64", credits per period = %"PRIu64"," 657 "size = %"PRIu64"\n" 658 "Traffic classes: period = %"PRIu64",\n" 659 "credits per period = [%"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 660 " %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 661 " %"PRIu64", %"PRIu64", %"PRIu64"]\n", 662 i, 663 664 /* Token bucket */ 665 p->tb_period, 666 p->tb_credits_per_period, 667 p->tb_size, 668 669 /* Traffic classes */ 670 p->tc_period, 671 p->tc_credits_per_period[0], 672 p->tc_credits_per_period[1], 673 p->tc_credits_per_period[2], 674 p->tc_credits_per_period[3], 675 p->tc_credits_per_period[4], 676 p->tc_credits_per_period[5], 677 p->tc_credits_per_period[6], 678 p->tc_credits_per_period[7], 679 p->tc_credits_per_period[8], 680 p->tc_credits_per_period[9], 681 p->tc_credits_per_period[10], 682 p->tc_credits_per_period[11], 683 p->tc_credits_per_period[12]); 684 } 685 686 static inline uint64_t 687 rte_sched_time_ms_to_bytes(uint64_t time_ms, uint64_t rate) 688 { 689 uint64_t time = time_ms; 690 691 time = (time * rate) / 1000; 692 693 return time; 694 } 695 696 static void 697 rte_sched_pipe_profile_convert(struct rte_sched_subport *subport, 698 struct rte_sched_pipe_params *src, 699 struct rte_sched_pipe_profile *dst, 700 uint64_t rate) 701 { 702 uint32_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 703 uint32_t lcd1, lcd2, lcd; 704 uint32_t i; 705 706 /* Token Bucket */ 707 if (src->tb_rate == rate) { 708 dst->tb_credits_per_period = 1; 709 dst->tb_period = 1; 710 } else { 711 double tb_rate = (double) src->tb_rate 712 / (double) rate; 713 double d = RTE_SCHED_TB_RATE_CONFIG_ERR; 714 715 rte_approx_64(tb_rate, d, &dst->tb_credits_per_period, 716 &dst->tb_period); 717 } 718 719 dst->tb_size = src->tb_size; 720 721 /* Traffic Classes */ 722 dst->tc_period = rte_sched_time_ms_to_bytes(src->tc_period, 723 rate); 724 725 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 726 if (subport->qsize[i]) 727 dst->tc_credits_per_period[i] 728 = rte_sched_time_ms_to_bytes(src->tc_period, 729 src->tc_rate[i]); 730 731 dst->tc_ov_weight = src->tc_ov_weight; 732 733 /* WRR queues */ 734 wrr_cost[0] = src->wrr_weights[0]; 735 wrr_cost[1] = src->wrr_weights[1]; 736 wrr_cost[2] = src->wrr_weights[2]; 737 wrr_cost[3] = src->wrr_weights[3]; 738 739 lcd1 = rte_get_lcd(wrr_cost[0], wrr_cost[1]); 740 lcd2 = rte_get_lcd(wrr_cost[2], wrr_cost[3]); 741 lcd = rte_get_lcd(lcd1, lcd2); 742 743 wrr_cost[0] = lcd / wrr_cost[0]; 744 wrr_cost[1] = lcd / wrr_cost[1]; 745 wrr_cost[2] = lcd / wrr_cost[2]; 746 wrr_cost[3] = lcd / wrr_cost[3]; 747 748 dst->wrr_cost[0] = (uint8_t) wrr_cost[0]; 749 dst->wrr_cost[1] = (uint8_t) wrr_cost[1]; 750 dst->wrr_cost[2] = (uint8_t) wrr_cost[2]; 751 dst->wrr_cost[3] = (uint8_t) wrr_cost[3]; 752 } 753 754 static void 755 rte_sched_subport_profile_convert(struct rte_sched_subport_profile_params *src, 756 struct rte_sched_subport_profile *dst, 757 uint64_t rate) 758 { 759 uint32_t i; 760 761 /* Token Bucket */ 762 if (src->tb_rate == rate) { 763 dst->tb_credits_per_period = 1; 764 dst->tb_period = 1; 765 } else { 766 double tb_rate = (double) src->tb_rate 767 / (double) rate; 768 double d = RTE_SCHED_TB_RATE_CONFIG_ERR; 769 770 rte_approx_64(tb_rate, d, &dst->tb_credits_per_period, 771 &dst->tb_period); 772 } 773 774 dst->tb_size = src->tb_size; 775 776 /* Traffic Classes */ 777 dst->tc_period = rte_sched_time_ms_to_bytes(src->tc_period, rate); 778 779 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 780 dst->tc_credits_per_period[i] 781 = rte_sched_time_ms_to_bytes(src->tc_period, 782 src->tc_rate[i]); 783 } 784 785 static void 786 rte_sched_subport_config_pipe_profile_table(struct rte_sched_subport *subport, 787 struct rte_sched_subport_params *params, uint64_t rate) 788 { 789 uint32_t i; 790 791 for (i = 0; i < subport->n_pipe_profiles; i++) { 792 struct rte_sched_pipe_params *src = params->pipe_profiles + i; 793 struct rte_sched_pipe_profile *dst = subport->pipe_profiles + i; 794 795 rte_sched_pipe_profile_convert(subport, src, dst, rate); 796 rte_sched_port_log_pipe_profile(subport, i); 797 } 798 799 subport->pipe_tc_be_rate_max = 0; 800 for (i = 0; i < subport->n_pipe_profiles; i++) { 801 struct rte_sched_pipe_params *src = params->pipe_profiles + i; 802 uint64_t pipe_tc_be_rate = src->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]; 803 804 if (subport->pipe_tc_be_rate_max < pipe_tc_be_rate) 805 subport->pipe_tc_be_rate_max = pipe_tc_be_rate; 806 } 807 } 808 809 static void 810 rte_sched_port_config_subport_profile_table(struct rte_sched_port *port, 811 struct rte_sched_port_params *params, 812 uint64_t rate) 813 { 814 uint32_t i; 815 816 for (i = 0; i < port->n_subport_profiles; i++) { 817 struct rte_sched_subport_profile_params *src 818 = params->subport_profiles + i; 819 struct rte_sched_subport_profile *dst 820 = port->subport_profiles + i; 821 822 rte_sched_subport_profile_convert(src, dst, rate); 823 rte_sched_port_log_subport_profile(port, i); 824 } 825 } 826 827 static int 828 rte_sched_subport_check_params(struct rte_sched_subport_params *params, 829 uint32_t n_max_pipes_per_subport, 830 uint64_t rate) 831 { 832 uint32_t i; 833 834 /* Check user parameters */ 835 if (params == NULL) { 836 RTE_LOG(ERR, SCHED, 837 "%s: Incorrect value for parameter params\n", __func__); 838 return -EINVAL; 839 } 840 841 /* qsize: if non-zero, power of 2, 842 * no bigger than 32K (due to 16-bit read/write pointers) 843 */ 844 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 845 uint16_t qsize = params->qsize[i]; 846 847 if (qsize != 0 && !rte_is_power_of_2(qsize)) { 848 RTE_LOG(ERR, SCHED, 849 "%s: Incorrect value for qsize\n", __func__); 850 return -EINVAL; 851 } 852 } 853 854 if (params->qsize[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 855 RTE_LOG(ERR, SCHED, "%s: Incorrect qsize\n", __func__); 856 return -EINVAL; 857 } 858 859 /* n_pipes_per_subport: non-zero, power of 2 */ 860 if (params->n_pipes_per_subport_enabled == 0 || 861 params->n_pipes_per_subport_enabled > n_max_pipes_per_subport || 862 !rte_is_power_of_2(params->n_pipes_per_subport_enabled)) { 863 RTE_LOG(ERR, SCHED, 864 "%s: Incorrect value for pipes number\n", __func__); 865 return -EINVAL; 866 } 867 868 /* pipe_profiles and n_pipe_profiles */ 869 if (params->pipe_profiles == NULL || 870 params->n_pipe_profiles == 0 || 871 params->n_max_pipe_profiles == 0 || 872 params->n_pipe_profiles > params->n_max_pipe_profiles) { 873 RTE_LOG(ERR, SCHED, 874 "%s: Incorrect value for pipe profiles\n", __func__); 875 return -EINVAL; 876 } 877 878 for (i = 0; i < params->n_pipe_profiles; i++) { 879 struct rte_sched_pipe_params *p = params->pipe_profiles + i; 880 int status; 881 882 status = pipe_profile_check(p, rate, ¶ms->qsize[0]); 883 if (status != 0) { 884 RTE_LOG(ERR, SCHED, 885 "%s: Pipe profile check failed(%d)\n", __func__, status); 886 return -EINVAL; 887 } 888 } 889 890 return 0; 891 } 892 893 uint32_t 894 rte_sched_port_get_memory_footprint(struct rte_sched_port_params *port_params, 895 struct rte_sched_subport_params **subport_params) 896 { 897 uint32_t size0 = 0, size1 = 0, i; 898 int status; 899 900 status = rte_sched_port_check_params(port_params); 901 if (status != 0) { 902 RTE_LOG(ERR, SCHED, 903 "%s: Port scheduler port params check failed (%d)\n", 904 __func__, status); 905 906 return 0; 907 } 908 909 for (i = 0; i < port_params->n_subports_per_port; i++) { 910 struct rte_sched_subport_params *sp = subport_params[i]; 911 912 status = rte_sched_subport_check_params(sp, 913 port_params->n_pipes_per_subport, 914 port_params->rate); 915 if (status != 0) { 916 RTE_LOG(ERR, SCHED, 917 "%s: Port scheduler subport params check failed (%d)\n", 918 __func__, status); 919 920 return 0; 921 } 922 } 923 924 size0 = sizeof(struct rte_sched_port); 925 926 for (i = 0; i < port_params->n_subports_per_port; i++) { 927 struct rte_sched_subport_params *sp = subport_params[i]; 928 929 size1 += rte_sched_subport_get_array_base(sp, 930 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL); 931 } 932 933 return size0 + size1; 934 } 935 936 struct rte_sched_port * 937 rte_sched_port_config(struct rte_sched_port_params *params) 938 { 939 struct rte_sched_port *port = NULL; 940 uint32_t size0, size1, size2; 941 uint32_t cycles_per_byte; 942 uint32_t i, j; 943 int status; 944 945 status = rte_sched_port_check_params(params); 946 if (status != 0) { 947 RTE_LOG(ERR, SCHED, 948 "%s: Port scheduler params check failed (%d)\n", 949 __func__, status); 950 return NULL; 951 } 952 953 size0 = sizeof(struct rte_sched_port); 954 size1 = params->n_subports_per_port * sizeof(struct rte_sched_subport *); 955 size2 = params->n_max_subport_profiles * 956 sizeof(struct rte_sched_subport_profile); 957 958 /* Allocate memory to store the data structures */ 959 port = rte_zmalloc_socket("qos_params", size0 + size1, 960 RTE_CACHE_LINE_SIZE, params->socket); 961 if (port == NULL) { 962 RTE_LOG(ERR, SCHED, "%s: Memory allocation fails\n", __func__); 963 964 return NULL; 965 } 966 967 /* Allocate memory to store the subport profile */ 968 port->subport_profiles = rte_zmalloc_socket("subport_profile", size2, 969 RTE_CACHE_LINE_SIZE, params->socket); 970 if (port->subport_profiles == NULL) { 971 RTE_LOG(ERR, SCHED, "%s: Memory allocation fails\n", __func__); 972 rte_free(port); 973 return NULL; 974 } 975 976 /* User parameters */ 977 port->n_subports_per_port = params->n_subports_per_port; 978 port->n_subport_profiles = params->n_subport_profiles; 979 port->n_max_subport_profiles = params->n_max_subport_profiles; 980 port->n_pipes_per_subport = params->n_pipes_per_subport; 981 port->n_pipes_per_subport_log2 = 982 __builtin_ctz(params->n_pipes_per_subport); 983 port->socket = params->socket; 984 985 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 986 port->pipe_queue[i] = i; 987 988 for (i = 0, j = 0; i < RTE_SCHED_QUEUES_PER_PIPE; i++) { 989 port->pipe_tc[i] = j; 990 991 if (j < RTE_SCHED_TRAFFIC_CLASS_BE) 992 j++; 993 } 994 995 for (i = 0, j = 0; i < RTE_SCHED_QUEUES_PER_PIPE; i++) { 996 port->tc_queue[i] = j; 997 998 if (i >= RTE_SCHED_TRAFFIC_CLASS_BE) 999 j++; 1000 } 1001 port->rate = params->rate; 1002 port->mtu = params->mtu + params->frame_overhead; 1003 port->frame_overhead = params->frame_overhead; 1004 1005 /* Timing */ 1006 port->time_cpu_cycles = rte_get_tsc_cycles(); 1007 port->time_cpu_bytes = 0; 1008 port->time = 0; 1009 1010 /* Subport profile table */ 1011 rte_sched_port_config_subport_profile_table(port, params, port->rate); 1012 1013 cycles_per_byte = (rte_get_tsc_hz() << RTE_SCHED_TIME_SHIFT) 1014 / params->rate; 1015 port->inv_cycles_per_byte = rte_reciprocal_value(cycles_per_byte); 1016 port->cycles_per_byte = cycles_per_byte; 1017 1018 /* Grinders */ 1019 port->pkts_out = NULL; 1020 port->n_pkts_out = 0; 1021 port->subport_id = 0; 1022 1023 return port; 1024 } 1025 1026 static inline void 1027 rte_sched_subport_free(struct rte_sched_port *port, 1028 struct rte_sched_subport *subport) 1029 { 1030 uint32_t n_subport_pipe_queues; 1031 uint32_t qindex; 1032 1033 if (subport == NULL) 1034 return; 1035 1036 n_subport_pipe_queues = rte_sched_subport_pipe_queues(subport); 1037 1038 /* Free enqueued mbufs */ 1039 for (qindex = 0; qindex < n_subport_pipe_queues; qindex++) { 1040 struct rte_mbuf **mbufs = 1041 rte_sched_subport_pipe_qbase(subport, qindex); 1042 uint16_t qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 1043 if (qsize != 0) { 1044 struct rte_sched_queue *queue = subport->queue + qindex; 1045 uint16_t qr = queue->qr & (qsize - 1); 1046 uint16_t qw = queue->qw & (qsize - 1); 1047 1048 for (; qr != qw; qr = (qr + 1) & (qsize - 1)) 1049 rte_pktmbuf_free(mbufs[qr]); 1050 } 1051 } 1052 1053 rte_free(subport); 1054 } 1055 1056 void 1057 rte_sched_port_free(struct rte_sched_port *port) 1058 { 1059 uint32_t i; 1060 1061 /* Check user parameters */ 1062 if (port == NULL) 1063 return; 1064 1065 for (i = 0; i < port->n_subports_per_port; i++) 1066 rte_sched_subport_free(port, port->subports[i]); 1067 1068 rte_free(port->subport_profiles); 1069 rte_free(port); 1070 } 1071 1072 static void 1073 rte_sched_free_memory(struct rte_sched_port *port, uint32_t n_subports) 1074 { 1075 uint32_t i; 1076 1077 for (i = 0; i < n_subports; i++) { 1078 struct rte_sched_subport *subport = port->subports[i]; 1079 1080 rte_sched_subport_free(port, subport); 1081 } 1082 1083 rte_free(port->subport_profiles); 1084 rte_free(port); 1085 } 1086 1087 #ifdef RTE_SCHED_CMAN 1088 static int 1089 rte_sched_red_config(struct rte_sched_port *port, 1090 struct rte_sched_subport *s, 1091 struct rte_sched_subport_params *params, 1092 uint32_t n_subports) 1093 { 1094 uint32_t i; 1095 1096 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 1097 1098 uint32_t j; 1099 1100 for (j = 0; j < RTE_COLORS; j++) { 1101 /* if min/max are both zero, then RED is disabled */ 1102 if ((params->cman_params->red_params[i][j].min_th | 1103 params->cman_params->red_params[i][j].max_th) == 0) { 1104 continue; 1105 } 1106 1107 if (rte_red_config_init(&s->red_config[i][j], 1108 params->cman_params->red_params[i][j].wq_log2, 1109 params->cman_params->red_params[i][j].min_th, 1110 params->cman_params->red_params[i][j].max_th, 1111 params->cman_params->red_params[i][j].maxp_inv) != 0) { 1112 rte_sched_free_memory(port, n_subports); 1113 1114 RTE_LOG(NOTICE, SCHED, 1115 "%s: RED configuration init fails\n", __func__); 1116 return -EINVAL; 1117 } 1118 } 1119 } 1120 s->cman = RTE_SCHED_CMAN_RED; 1121 return 0; 1122 } 1123 1124 static int 1125 rte_sched_pie_config(struct rte_sched_port *port, 1126 struct rte_sched_subport *s, 1127 struct rte_sched_subport_params *params, 1128 uint32_t n_subports) 1129 { 1130 uint32_t i; 1131 1132 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 1133 if (params->cman_params->pie_params[i].tailq_th > params->qsize[i]) { 1134 RTE_LOG(NOTICE, SCHED, 1135 "%s: PIE tailq threshold incorrect\n", __func__); 1136 return -EINVAL; 1137 } 1138 1139 if (rte_pie_config_init(&s->pie_config[i], 1140 params->cman_params->pie_params[i].qdelay_ref, 1141 params->cman_params->pie_params[i].dp_update_interval, 1142 params->cman_params->pie_params[i].max_burst, 1143 params->cman_params->pie_params[i].tailq_th) != 0) { 1144 rte_sched_free_memory(port, n_subports); 1145 1146 RTE_LOG(NOTICE, SCHED, 1147 "%s: PIE configuration init fails\n", __func__); 1148 return -EINVAL; 1149 } 1150 } 1151 s->cman = RTE_SCHED_CMAN_PIE; 1152 return 0; 1153 } 1154 1155 static int 1156 rte_sched_cman_config(struct rte_sched_port *port, 1157 struct rte_sched_subport *s, 1158 struct rte_sched_subport_params *params, 1159 uint32_t n_subports) 1160 { 1161 if (params->cman_params->cman_mode == RTE_SCHED_CMAN_RED) 1162 return rte_sched_red_config(port, s, params, n_subports); 1163 1164 else if (params->cman_params->cman_mode == RTE_SCHED_CMAN_PIE) 1165 return rte_sched_pie_config(port, s, params, n_subports); 1166 1167 return -EINVAL; 1168 } 1169 #endif 1170 1171 int 1172 rte_sched_subport_tc_ov_config(struct rte_sched_port *port, 1173 uint32_t subport_id, 1174 bool tc_ov_enable) 1175 { 1176 struct rte_sched_subport *s; 1177 1178 if (port == NULL) { 1179 RTE_LOG(ERR, SCHED, 1180 "%s: Incorrect value for parameter port\n", __func__); 1181 return -EINVAL; 1182 } 1183 1184 if (subport_id >= port->n_subports_per_port) { 1185 RTE_LOG(ERR, SCHED, 1186 "%s: Incorrect value for parameter subport id\n", __func__); 1187 return -EINVAL; 1188 } 1189 1190 s = port->subports[subport_id]; 1191 s->tc_ov_enabled = tc_ov_enable ? 1 : 0; 1192 1193 return 0; 1194 } 1195 1196 int 1197 rte_sched_subport_config(struct rte_sched_port *port, 1198 uint32_t subport_id, 1199 struct rte_sched_subport_params *params, 1200 uint32_t subport_profile_id) 1201 { 1202 struct rte_sched_subport *s = NULL; 1203 uint32_t n_subports = subport_id; 1204 struct rte_sched_subport_profile *profile; 1205 uint32_t n_subport_pipe_queues, i; 1206 uint32_t size0, size1, bmp_mem_size; 1207 int status; 1208 int ret; 1209 1210 /* Check user parameters */ 1211 if (port == NULL) { 1212 RTE_LOG(ERR, SCHED, 1213 "%s: Incorrect value for parameter port\n", __func__); 1214 return 0; 1215 } 1216 1217 if (subport_id >= port->n_subports_per_port) { 1218 RTE_LOG(ERR, SCHED, 1219 "%s: Incorrect value for subport id\n", __func__); 1220 ret = -EINVAL; 1221 goto out; 1222 } 1223 1224 if (subport_profile_id >= port->n_max_subport_profiles) { 1225 RTE_LOG(ERR, SCHED, "%s: " 1226 "Number of subport profile exceeds the max limit\n", 1227 __func__); 1228 ret = -EINVAL; 1229 goto out; 1230 } 1231 1232 /** Memory is allocated only on first invocation of the api for a 1233 * given subport. Subsequent invocation on same subport will just 1234 * update subport bandwidth parameter. 1235 **/ 1236 if (port->subports[subport_id] == NULL) { 1237 1238 status = rte_sched_subport_check_params(params, 1239 port->n_pipes_per_subport, 1240 port->rate); 1241 if (status != 0) { 1242 RTE_LOG(NOTICE, SCHED, 1243 "%s: Port scheduler params check failed (%d)\n", 1244 __func__, status); 1245 ret = -EINVAL; 1246 goto out; 1247 } 1248 1249 /* Determine the amount of memory to allocate */ 1250 size0 = sizeof(struct rte_sched_subport); 1251 size1 = rte_sched_subport_get_array_base(params, 1252 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL); 1253 1254 /* Allocate memory to store the data structures */ 1255 s = rte_zmalloc_socket("subport_params", size0 + size1, 1256 RTE_CACHE_LINE_SIZE, port->socket); 1257 if (s == NULL) { 1258 RTE_LOG(ERR, SCHED, 1259 "%s: Memory allocation fails\n", __func__); 1260 ret = -ENOMEM; 1261 goto out; 1262 } 1263 1264 n_subports++; 1265 1266 subport_profile_id = 0; 1267 1268 /* Port */ 1269 port->subports[subport_id] = s; 1270 1271 s->tb_time = port->time; 1272 1273 /* compile time checks */ 1274 RTE_BUILD_BUG_ON(RTE_SCHED_PORT_N_GRINDERS == 0); 1275 RTE_BUILD_BUG_ON(RTE_SCHED_PORT_N_GRINDERS & 1276 (RTE_SCHED_PORT_N_GRINDERS - 1)); 1277 1278 /* User parameters */ 1279 s->n_pipes_per_subport_enabled = 1280 params->n_pipes_per_subport_enabled; 1281 memcpy(s->qsize, params->qsize, sizeof(params->qsize)); 1282 s->n_pipe_profiles = params->n_pipe_profiles; 1283 s->n_max_pipe_profiles = params->n_max_pipe_profiles; 1284 1285 /* TC oversubscription is enabled by default */ 1286 s->tc_ov_enabled = 1; 1287 1288 #ifdef RTE_SCHED_CMAN 1289 if (params->cman_params != NULL) { 1290 s->cman_enabled = true; 1291 status = rte_sched_cman_config(port, s, params, n_subports); 1292 if (status) { 1293 RTE_LOG(NOTICE, SCHED, 1294 "%s: CMAN configuration fails\n", __func__); 1295 return status; 1296 } 1297 } else { 1298 s->cman_enabled = false; 1299 } 1300 #endif 1301 1302 /* Scheduling loop detection */ 1303 s->pipe_loop = RTE_SCHED_PIPE_INVALID; 1304 s->pipe_exhaustion = 0; 1305 1306 /* Grinders */ 1307 s->busy_grinders = 0; 1308 1309 /* Queue base calculation */ 1310 rte_sched_subport_config_qsize(s); 1311 1312 /* Large data structures */ 1313 s->pipe = (struct rte_sched_pipe *) 1314 (s->memory + rte_sched_subport_get_array_base(params, 1315 e_RTE_SCHED_SUBPORT_ARRAY_PIPE)); 1316 s->queue = (struct rte_sched_queue *) 1317 (s->memory + rte_sched_subport_get_array_base(params, 1318 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE)); 1319 s->queue_extra = (struct rte_sched_queue_extra *) 1320 (s->memory + rte_sched_subport_get_array_base(params, 1321 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA)); 1322 s->pipe_profiles = (struct rte_sched_pipe_profile *) 1323 (s->memory + rte_sched_subport_get_array_base(params, 1324 e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES)); 1325 s->bmp_array = s->memory + rte_sched_subport_get_array_base( 1326 params, e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY); 1327 s->queue_array = (struct rte_mbuf **) 1328 (s->memory + rte_sched_subport_get_array_base(params, 1329 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY)); 1330 1331 /* Pipe profile table */ 1332 rte_sched_subport_config_pipe_profile_table(s, params, 1333 port->rate); 1334 1335 /* Bitmap */ 1336 n_subport_pipe_queues = rte_sched_subport_pipe_queues(s); 1337 bmp_mem_size = rte_bitmap_get_memory_footprint( 1338 n_subport_pipe_queues); 1339 s->bmp = rte_bitmap_init(n_subport_pipe_queues, s->bmp_array, 1340 bmp_mem_size); 1341 if (s->bmp == NULL) { 1342 RTE_LOG(ERR, SCHED, 1343 "%s: Subport bitmap init error\n", __func__); 1344 ret = -EINVAL; 1345 goto out; 1346 } 1347 1348 for (i = 0; i < RTE_SCHED_PORT_N_GRINDERS; i++) 1349 s->grinder_base_bmp_pos[i] = RTE_SCHED_PIPE_INVALID; 1350 1351 /* TC oversubscription */ 1352 s->tc_ov_wm_min = port->mtu; 1353 s->tc_ov_period_id = 0; 1354 s->tc_ov = 0; 1355 s->tc_ov_n = 0; 1356 s->tc_ov_rate = 0; 1357 } 1358 1359 { 1360 /* update subport parameters from subport profile table*/ 1361 profile = port->subport_profiles + subport_profile_id; 1362 1363 s = port->subports[subport_id]; 1364 1365 s->tb_credits = profile->tb_size / 2; 1366 1367 s->tc_time = port->time + profile->tc_period; 1368 1369 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 1370 if (s->qsize[i]) 1371 s->tc_credits[i] = 1372 profile->tc_credits_per_period[i]; 1373 else 1374 profile->tc_credits_per_period[i] = 0; 1375 1376 s->tc_ov_wm_max = rte_sched_time_ms_to_bytes(profile->tc_period, 1377 s->pipe_tc_be_rate_max); 1378 s->tc_ov_wm = s->tc_ov_wm_max; 1379 s->profile = subport_profile_id; 1380 1381 } 1382 1383 rte_sched_port_log_subport_profile(port, subport_profile_id); 1384 1385 return 0; 1386 1387 out: 1388 rte_sched_free_memory(port, n_subports); 1389 1390 return ret; 1391 } 1392 1393 int 1394 rte_sched_pipe_config(struct rte_sched_port *port, 1395 uint32_t subport_id, 1396 uint32_t pipe_id, 1397 int32_t pipe_profile) 1398 { 1399 struct rte_sched_subport *s; 1400 struct rte_sched_subport_profile *sp; 1401 struct rte_sched_pipe *p; 1402 struct rte_sched_pipe_profile *params; 1403 uint32_t n_subports = subport_id + 1; 1404 uint32_t deactivate, profile, i; 1405 int ret; 1406 1407 /* Check user parameters */ 1408 profile = (uint32_t) pipe_profile; 1409 deactivate = (pipe_profile < 0); 1410 1411 if (port == NULL) { 1412 RTE_LOG(ERR, SCHED, 1413 "%s: Incorrect value for parameter port\n", __func__); 1414 return -EINVAL; 1415 } 1416 1417 if (subport_id >= port->n_subports_per_port) { 1418 RTE_LOG(ERR, SCHED, 1419 "%s: Incorrect value for parameter subport id\n", __func__); 1420 ret = -EINVAL; 1421 goto out; 1422 } 1423 1424 s = port->subports[subport_id]; 1425 if (pipe_id >= s->n_pipes_per_subport_enabled) { 1426 RTE_LOG(ERR, SCHED, 1427 "%s: Incorrect value for parameter pipe id\n", __func__); 1428 ret = -EINVAL; 1429 goto out; 1430 } 1431 1432 if (!deactivate && profile >= s->n_pipe_profiles) { 1433 RTE_LOG(ERR, SCHED, 1434 "%s: Incorrect value for parameter pipe profile\n", __func__); 1435 ret = -EINVAL; 1436 goto out; 1437 } 1438 1439 sp = port->subport_profiles + s->profile; 1440 /* Handle the case when pipe already has a valid configuration */ 1441 p = s->pipe + pipe_id; 1442 if (p->tb_time) { 1443 params = s->pipe_profiles + p->profile; 1444 1445 double subport_tc_be_rate = 1446 (double)sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1447 / (double) sp->tc_period; 1448 double pipe_tc_be_rate = 1449 (double) params->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1450 / (double) params->tc_period; 1451 uint32_t tc_be_ov = s->tc_ov; 1452 1453 /* Unplug pipe from its subport */ 1454 s->tc_ov_n -= params->tc_ov_weight; 1455 s->tc_ov_rate -= pipe_tc_be_rate; 1456 s->tc_ov = s->tc_ov_rate > subport_tc_be_rate; 1457 1458 if (s->tc_ov != tc_be_ov) { 1459 RTE_LOG(DEBUG, SCHED, 1460 "Subport %u Best-effort TC oversubscription is OFF (%.4lf >= %.4lf)\n", 1461 subport_id, subport_tc_be_rate, s->tc_ov_rate); 1462 } 1463 1464 /* Reset the pipe */ 1465 memset(p, 0, sizeof(struct rte_sched_pipe)); 1466 } 1467 1468 if (deactivate) 1469 return 0; 1470 1471 /* Apply the new pipe configuration */ 1472 p->profile = profile; 1473 params = s->pipe_profiles + p->profile; 1474 1475 /* Token Bucket (TB) */ 1476 p->tb_time = port->time; 1477 p->tb_credits = params->tb_size / 2; 1478 1479 /* Traffic Classes (TCs) */ 1480 p->tc_time = port->time + params->tc_period; 1481 1482 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 1483 if (s->qsize[i]) 1484 p->tc_credits[i] = params->tc_credits_per_period[i]; 1485 1486 { 1487 /* Subport best effort tc oversubscription */ 1488 double subport_tc_be_rate = 1489 (double)sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1490 / (double) sp->tc_period; 1491 double pipe_tc_be_rate = 1492 (double) params->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1493 / (double) params->tc_period; 1494 uint32_t tc_be_ov = s->tc_ov; 1495 1496 s->tc_ov_n += params->tc_ov_weight; 1497 s->tc_ov_rate += pipe_tc_be_rate; 1498 s->tc_ov = s->tc_ov_rate > subport_tc_be_rate; 1499 1500 if (s->tc_ov != tc_be_ov) { 1501 RTE_LOG(DEBUG, SCHED, 1502 "Subport %u Best effort TC oversubscription is ON (%.4lf < %.4lf)\n", 1503 subport_id, subport_tc_be_rate, s->tc_ov_rate); 1504 } 1505 p->tc_ov_period_id = s->tc_ov_period_id; 1506 p->tc_ov_credits = s->tc_ov_wm; 1507 } 1508 1509 return 0; 1510 1511 out: 1512 rte_sched_free_memory(port, n_subports); 1513 1514 return ret; 1515 } 1516 1517 int 1518 rte_sched_subport_pipe_profile_add(struct rte_sched_port *port, 1519 uint32_t subport_id, 1520 struct rte_sched_pipe_params *params, 1521 uint32_t *pipe_profile_id) 1522 { 1523 struct rte_sched_subport *s; 1524 struct rte_sched_pipe_profile *pp; 1525 uint32_t i; 1526 int status; 1527 1528 /* Port */ 1529 if (port == NULL) { 1530 RTE_LOG(ERR, SCHED, 1531 "%s: Incorrect value for parameter port\n", __func__); 1532 return -EINVAL; 1533 } 1534 1535 /* Subport id not exceeds the max limit */ 1536 if (subport_id > port->n_subports_per_port) { 1537 RTE_LOG(ERR, SCHED, 1538 "%s: Incorrect value for subport id\n", __func__); 1539 return -EINVAL; 1540 } 1541 1542 s = port->subports[subport_id]; 1543 1544 /* Pipe profiles exceeds the max limit */ 1545 if (s->n_pipe_profiles >= s->n_max_pipe_profiles) { 1546 RTE_LOG(ERR, SCHED, 1547 "%s: Number of pipe profiles exceeds the max limit\n", __func__); 1548 return -EINVAL; 1549 } 1550 1551 /* Pipe params */ 1552 status = pipe_profile_check(params, port->rate, &s->qsize[0]); 1553 if (status != 0) { 1554 RTE_LOG(ERR, SCHED, 1555 "%s: Pipe profile check failed(%d)\n", __func__, status); 1556 return -EINVAL; 1557 } 1558 1559 pp = &s->pipe_profiles[s->n_pipe_profiles]; 1560 rte_sched_pipe_profile_convert(s, params, pp, port->rate); 1561 1562 /* Pipe profile should not exists */ 1563 for (i = 0; i < s->n_pipe_profiles; i++) 1564 if (memcmp(s->pipe_profiles + i, pp, sizeof(*pp)) == 0) { 1565 RTE_LOG(ERR, SCHED, 1566 "%s: Pipe profile exists\n", __func__); 1567 return -EINVAL; 1568 } 1569 1570 /* Pipe profile commit */ 1571 *pipe_profile_id = s->n_pipe_profiles; 1572 s->n_pipe_profiles++; 1573 1574 if (s->pipe_tc_be_rate_max < params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]) 1575 s->pipe_tc_be_rate_max = params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]; 1576 1577 rte_sched_port_log_pipe_profile(s, *pipe_profile_id); 1578 1579 return 0; 1580 } 1581 1582 int 1583 rte_sched_port_subport_profile_add(struct rte_sched_port *port, 1584 struct rte_sched_subport_profile_params *params, 1585 uint32_t *subport_profile_id) 1586 { 1587 int status; 1588 uint32_t i; 1589 struct rte_sched_subport_profile *dst; 1590 1591 /* Port */ 1592 if (port == NULL) { 1593 RTE_LOG(ERR, SCHED, "%s: " 1594 "Incorrect value for parameter port\n", __func__); 1595 return -EINVAL; 1596 } 1597 1598 if (params == NULL) { 1599 RTE_LOG(ERR, SCHED, "%s: " 1600 "Incorrect value for parameter profile\n", __func__); 1601 return -EINVAL; 1602 } 1603 1604 if (subport_profile_id == NULL) { 1605 RTE_LOG(ERR, SCHED, "%s: " 1606 "Incorrect value for parameter subport_profile_id\n", 1607 __func__); 1608 return -EINVAL; 1609 } 1610 1611 dst = port->subport_profiles + port->n_subport_profiles; 1612 1613 /* Subport profiles exceeds the max limit */ 1614 if (port->n_subport_profiles >= port->n_max_subport_profiles) { 1615 RTE_LOG(ERR, SCHED, "%s: " 1616 "Number of subport profiles exceeds the max limit\n", 1617 __func__); 1618 return -EINVAL; 1619 } 1620 1621 status = subport_profile_check(params, port->rate); 1622 if (status != 0) { 1623 RTE_LOG(ERR, SCHED, 1624 "%s: subport profile check failed(%d)\n", __func__, status); 1625 return -EINVAL; 1626 } 1627 1628 rte_sched_subport_profile_convert(params, dst, port->rate); 1629 1630 /* Subport profile should not exists */ 1631 for (i = 0; i < port->n_subport_profiles; i++) 1632 if (memcmp(port->subport_profiles + i, 1633 dst, sizeof(*dst)) == 0) { 1634 RTE_LOG(ERR, SCHED, 1635 "%s: subport profile exists\n", __func__); 1636 return -EINVAL; 1637 } 1638 1639 /* Subport profile commit */ 1640 *subport_profile_id = port->n_subport_profiles; 1641 port->n_subport_profiles++; 1642 1643 rte_sched_port_log_subport_profile(port, *subport_profile_id); 1644 1645 return 0; 1646 } 1647 1648 static inline uint32_t 1649 rte_sched_port_qindex(struct rte_sched_port *port, 1650 uint32_t subport, 1651 uint32_t pipe, 1652 uint32_t traffic_class, 1653 uint32_t queue) 1654 { 1655 return ((subport & (port->n_subports_per_port - 1)) << 1656 (port->n_pipes_per_subport_log2 + 4)) | 1657 ((pipe & 1658 (port->subports[subport]->n_pipes_per_subport_enabled - 1)) << 4) | 1659 ((rte_sched_port_pipe_queue(port, traffic_class) + queue) & 1660 (RTE_SCHED_QUEUES_PER_PIPE - 1)); 1661 } 1662 1663 void 1664 rte_sched_port_pkt_write(struct rte_sched_port *port, 1665 struct rte_mbuf *pkt, 1666 uint32_t subport, uint32_t pipe, 1667 uint32_t traffic_class, 1668 uint32_t queue, enum rte_color color) 1669 { 1670 uint32_t queue_id = 1671 rte_sched_port_qindex(port, subport, pipe, traffic_class, queue); 1672 1673 rte_mbuf_sched_set(pkt, queue_id, traffic_class, (uint8_t)color); 1674 } 1675 1676 void 1677 rte_sched_port_pkt_read_tree_path(struct rte_sched_port *port, 1678 const struct rte_mbuf *pkt, 1679 uint32_t *subport, uint32_t *pipe, 1680 uint32_t *traffic_class, uint32_t *queue) 1681 { 1682 uint32_t queue_id = rte_mbuf_sched_queue_get(pkt); 1683 1684 *subport = queue_id >> (port->n_pipes_per_subport_log2 + 4); 1685 *pipe = (queue_id >> 4) & 1686 (port->subports[*subport]->n_pipes_per_subport_enabled - 1); 1687 *traffic_class = rte_sched_port_pipe_tc(port, queue_id); 1688 *queue = rte_sched_port_tc_queue(port, queue_id); 1689 } 1690 1691 enum rte_color 1692 rte_sched_port_pkt_read_color(const struct rte_mbuf *pkt) 1693 { 1694 return (enum rte_color)rte_mbuf_sched_color_get(pkt); 1695 } 1696 1697 int 1698 rte_sched_subport_read_stats(struct rte_sched_port *port, 1699 uint32_t subport_id, 1700 struct rte_sched_subport_stats *stats, 1701 uint32_t *tc_ov) 1702 { 1703 struct rte_sched_subport *s; 1704 1705 /* Check user parameters */ 1706 if (port == NULL) { 1707 RTE_LOG(ERR, SCHED, 1708 "%s: Incorrect value for parameter port\n", __func__); 1709 return -EINVAL; 1710 } 1711 1712 if (subport_id >= port->n_subports_per_port) { 1713 RTE_LOG(ERR, SCHED, 1714 "%s: Incorrect value for subport id\n", __func__); 1715 return -EINVAL; 1716 } 1717 1718 if (stats == NULL) { 1719 RTE_LOG(ERR, SCHED, 1720 "%s: Incorrect value for parameter stats\n", __func__); 1721 return -EINVAL; 1722 } 1723 1724 if (tc_ov == NULL) { 1725 RTE_LOG(ERR, SCHED, 1726 "%s: Incorrect value for tc_ov\n", __func__); 1727 return -EINVAL; 1728 } 1729 1730 s = port->subports[subport_id]; 1731 1732 /* Copy subport stats and clear */ 1733 memcpy(stats, &s->stats, sizeof(struct rte_sched_subport_stats)); 1734 memset(&s->stats, 0, sizeof(struct rte_sched_subport_stats)); 1735 1736 /* Subport TC oversubscription status */ 1737 *tc_ov = s->tc_ov; 1738 1739 return 0; 1740 } 1741 1742 int 1743 rte_sched_queue_read_stats(struct rte_sched_port *port, 1744 uint32_t queue_id, 1745 struct rte_sched_queue_stats *stats, 1746 uint16_t *qlen) 1747 { 1748 struct rte_sched_subport *s; 1749 struct rte_sched_queue *q; 1750 struct rte_sched_queue_extra *qe; 1751 uint32_t subport_id, subport_qmask, subport_qindex; 1752 1753 /* Check user parameters */ 1754 if (port == NULL) { 1755 RTE_LOG(ERR, SCHED, 1756 "%s: Incorrect value for parameter port\n", __func__); 1757 return -EINVAL; 1758 } 1759 1760 if (queue_id >= rte_sched_port_queues_per_port(port)) { 1761 RTE_LOG(ERR, SCHED, 1762 "%s: Incorrect value for queue id\n", __func__); 1763 return -EINVAL; 1764 } 1765 1766 if (stats == NULL) { 1767 RTE_LOG(ERR, SCHED, 1768 "%s: Incorrect value for parameter stats\n", __func__); 1769 return -EINVAL; 1770 } 1771 1772 if (qlen == NULL) { 1773 RTE_LOG(ERR, SCHED, 1774 "%s: Incorrect value for parameter qlen\n", __func__); 1775 return -EINVAL; 1776 } 1777 subport_qmask = port->n_pipes_per_subport_log2 + 4; 1778 subport_id = (queue_id >> subport_qmask) & (port->n_subports_per_port - 1); 1779 1780 s = port->subports[subport_id]; 1781 subport_qindex = ((1 << subport_qmask) - 1) & queue_id; 1782 q = s->queue + subport_qindex; 1783 qe = s->queue_extra + subport_qindex; 1784 1785 /* Copy queue stats and clear */ 1786 memcpy(stats, &qe->stats, sizeof(struct rte_sched_queue_stats)); 1787 memset(&qe->stats, 0, sizeof(struct rte_sched_queue_stats)); 1788 1789 /* Queue length */ 1790 *qlen = q->qw - q->qr; 1791 1792 return 0; 1793 } 1794 1795 #ifdef RTE_SCHED_DEBUG 1796 1797 static inline int 1798 rte_sched_port_queue_is_empty(struct rte_sched_subport *subport, 1799 uint32_t qindex) 1800 { 1801 struct rte_sched_queue *queue = subport->queue + qindex; 1802 1803 return queue->qr == queue->qw; 1804 } 1805 1806 #endif /* RTE_SCHED_DEBUG */ 1807 1808 static inline void 1809 rte_sched_port_update_subport_stats(struct rte_sched_port *port, 1810 struct rte_sched_subport *subport, 1811 uint32_t qindex, 1812 struct rte_mbuf *pkt) 1813 { 1814 uint32_t tc_index = rte_sched_port_pipe_tc(port, qindex); 1815 uint32_t pkt_len = pkt->pkt_len; 1816 1817 subport->stats.n_pkts_tc[tc_index] += 1; 1818 subport->stats.n_bytes_tc[tc_index] += pkt_len; 1819 } 1820 1821 static inline void 1822 rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port, 1823 struct rte_sched_subport *subport, 1824 uint32_t qindex, 1825 struct rte_mbuf *pkt, 1826 __rte_unused uint32_t n_pkts_cman_dropped) 1827 { 1828 uint32_t tc_index = rte_sched_port_pipe_tc(port, qindex); 1829 uint32_t pkt_len = pkt->pkt_len; 1830 1831 subport->stats.n_pkts_tc_dropped[tc_index] += 1; 1832 subport->stats.n_bytes_tc_dropped[tc_index] += pkt_len; 1833 subport->stats.n_pkts_cman_dropped[tc_index] += n_pkts_cman_dropped; 1834 } 1835 1836 static inline void 1837 rte_sched_port_update_queue_stats(struct rte_sched_subport *subport, 1838 uint32_t qindex, 1839 struct rte_mbuf *pkt) 1840 { 1841 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1842 uint32_t pkt_len = pkt->pkt_len; 1843 1844 qe->stats.n_pkts += 1; 1845 qe->stats.n_bytes += pkt_len; 1846 } 1847 1848 static inline void 1849 rte_sched_port_update_queue_stats_on_drop(struct rte_sched_subport *subport, 1850 uint32_t qindex, 1851 struct rte_mbuf *pkt, 1852 __rte_unused uint32_t n_pkts_cman_dropped) 1853 { 1854 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1855 uint32_t pkt_len = pkt->pkt_len; 1856 1857 qe->stats.n_pkts_dropped += 1; 1858 qe->stats.n_bytes_dropped += pkt_len; 1859 #ifdef RTE_SCHED_CMAN 1860 if (subport->cman_enabled) 1861 qe->stats.n_pkts_cman_dropped += n_pkts_cman_dropped; 1862 #endif 1863 } 1864 1865 #ifdef RTE_SCHED_CMAN 1866 1867 static inline int 1868 rte_sched_port_cman_drop(struct rte_sched_port *port, 1869 struct rte_sched_subport *subport, 1870 struct rte_mbuf *pkt, 1871 uint32_t qindex, 1872 uint16_t qlen) 1873 { 1874 if (!subport->cman_enabled) 1875 return 0; 1876 1877 struct rte_sched_queue_extra *qe; 1878 uint32_t tc_index; 1879 1880 tc_index = rte_sched_port_pipe_tc(port, qindex); 1881 qe = subport->queue_extra + qindex; 1882 1883 /* RED */ 1884 if (subport->cman == RTE_SCHED_CMAN_RED) { 1885 struct rte_red_config *red_cfg; 1886 struct rte_red *red; 1887 enum rte_color color; 1888 1889 color = rte_sched_port_pkt_read_color(pkt); 1890 red_cfg = &subport->red_config[tc_index][color]; 1891 1892 if ((red_cfg->min_th | red_cfg->max_th) == 0) 1893 return 0; 1894 1895 red = &qe->red; 1896 1897 return rte_red_enqueue(red_cfg, red, qlen, port->time); 1898 } 1899 1900 /* PIE */ 1901 struct rte_pie_config *pie_cfg = &subport->pie_config[tc_index]; 1902 struct rte_pie *pie = &qe->pie; 1903 1904 return rte_pie_enqueue(pie_cfg, pie, qlen, pkt->pkt_len, port->time_cpu_cycles); 1905 } 1906 1907 static inline void 1908 rte_sched_port_red_set_queue_empty_timestamp(struct rte_sched_port *port, 1909 struct rte_sched_subport *subport, uint32_t qindex) 1910 { 1911 if (subport->cman_enabled) { 1912 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1913 if (subport->cman == RTE_SCHED_CMAN_RED) { 1914 struct rte_red *red = &qe->red; 1915 1916 rte_red_mark_queue_empty(red, port->time); 1917 } 1918 } 1919 } 1920 1921 static inline void 1922 rte_sched_port_pie_dequeue(struct rte_sched_subport *subport, 1923 uint32_t qindex, uint32_t pkt_len, uint64_t time) { 1924 if (subport->cman_enabled && subport->cman == RTE_SCHED_CMAN_PIE) { 1925 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1926 struct rte_pie *pie = &qe->pie; 1927 1928 /* Update queue length */ 1929 pie->qlen -= 1; 1930 pie->qlen_bytes -= pkt_len; 1931 1932 rte_pie_dequeue(pie, pkt_len, time); 1933 } 1934 } 1935 1936 #else 1937 1938 static inline int rte_sched_port_cman_drop(struct rte_sched_port *port __rte_unused, 1939 struct rte_sched_subport *subport __rte_unused, 1940 struct rte_mbuf *pkt __rte_unused, 1941 uint32_t qindex __rte_unused, 1942 uint16_t qlen __rte_unused) 1943 { 1944 return 0; 1945 } 1946 1947 #define rte_sched_port_red_set_queue_empty_timestamp(port, subport, qindex) 1948 1949 static inline void 1950 rte_sched_port_pie_dequeue(struct rte_sched_subport *subport __rte_unused, 1951 uint32_t qindex __rte_unused, 1952 uint32_t pkt_len __rte_unused, 1953 uint64_t time __rte_unused) { 1954 /* do-nothing when RTE_SCHED_CMAN not defined */ 1955 } 1956 1957 #endif /* RTE_SCHED_CMAN */ 1958 1959 #ifdef RTE_SCHED_DEBUG 1960 1961 static inline void 1962 debug_check_queue_slab(struct rte_sched_subport *subport, uint32_t bmp_pos, 1963 uint64_t bmp_slab) 1964 { 1965 uint64_t mask; 1966 uint32_t i, panic; 1967 1968 if (bmp_slab == 0) 1969 rte_panic("Empty slab at position %u\n", bmp_pos); 1970 1971 panic = 0; 1972 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) { 1973 if (mask & bmp_slab) { 1974 if (rte_sched_port_queue_is_empty(subport, bmp_pos + i)) { 1975 printf("Queue %u (slab offset %u) is empty\n", bmp_pos + i, i); 1976 panic = 1; 1977 } 1978 } 1979 } 1980 1981 if (panic) 1982 rte_panic("Empty queues in slab 0x%" PRIx64 "starting at position %u\n", 1983 bmp_slab, bmp_pos); 1984 } 1985 1986 #endif /* RTE_SCHED_DEBUG */ 1987 1988 static inline struct rte_sched_subport * 1989 rte_sched_port_subport(struct rte_sched_port *port, 1990 struct rte_mbuf *pkt) 1991 { 1992 uint32_t queue_id = rte_mbuf_sched_queue_get(pkt); 1993 uint32_t subport_id = queue_id >> (port->n_pipes_per_subport_log2 + 4); 1994 1995 return port->subports[subport_id]; 1996 } 1997 1998 static inline uint32_t 1999 rte_sched_port_enqueue_qptrs_prefetch0(struct rte_sched_subport *subport, 2000 struct rte_mbuf *pkt, uint32_t subport_qmask) 2001 { 2002 struct rte_sched_queue *q; 2003 struct rte_sched_queue_extra *qe; 2004 uint32_t qindex = rte_mbuf_sched_queue_get(pkt); 2005 uint32_t subport_queue_id = subport_qmask & qindex; 2006 2007 q = subport->queue + subport_queue_id; 2008 rte_prefetch0(q); 2009 qe = subport->queue_extra + subport_queue_id; 2010 rte_prefetch0(qe); 2011 2012 return subport_queue_id; 2013 } 2014 2015 static inline void 2016 rte_sched_port_enqueue_qwa_prefetch0(struct rte_sched_port *port, 2017 struct rte_sched_subport *subport, 2018 uint32_t qindex, 2019 struct rte_mbuf **qbase) 2020 { 2021 struct rte_sched_queue *q; 2022 struct rte_mbuf **q_qw; 2023 uint16_t qsize; 2024 2025 q = subport->queue + qindex; 2026 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 2027 q_qw = qbase + (q->qw & (qsize - 1)); 2028 2029 rte_prefetch0(q_qw); 2030 rte_bitmap_prefetch0(subport->bmp, qindex); 2031 } 2032 2033 static inline int 2034 rte_sched_port_enqueue_qwa(struct rte_sched_port *port, 2035 struct rte_sched_subport *subport, 2036 uint32_t qindex, 2037 struct rte_mbuf **qbase, 2038 struct rte_mbuf *pkt) 2039 { 2040 struct rte_sched_queue *q; 2041 uint16_t qsize; 2042 uint16_t qlen; 2043 2044 q = subport->queue + qindex; 2045 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 2046 qlen = q->qw - q->qr; 2047 2048 /* Drop the packet (and update drop stats) when queue is full */ 2049 if (unlikely(rte_sched_port_cman_drop(port, subport, pkt, qindex, qlen) || 2050 (qlen >= qsize))) { 2051 rte_pktmbuf_free(pkt); 2052 rte_sched_port_update_subport_stats_on_drop(port, subport, 2053 qindex, pkt, qlen < qsize); 2054 rte_sched_port_update_queue_stats_on_drop(subport, qindex, pkt, 2055 qlen < qsize); 2056 return 0; 2057 } 2058 2059 /* Enqueue packet */ 2060 qbase[q->qw & (qsize - 1)] = pkt; 2061 q->qw++; 2062 2063 /* Activate queue in the subport bitmap */ 2064 rte_bitmap_set(subport->bmp, qindex); 2065 2066 /* Statistics */ 2067 rte_sched_port_update_subport_stats(port, subport, qindex, pkt); 2068 rte_sched_port_update_queue_stats(subport, qindex, pkt); 2069 2070 return 1; 2071 } 2072 2073 2074 /* 2075 * The enqueue function implements a 4-level pipeline with each stage 2076 * processing two different packets. The purpose of using a pipeline 2077 * is to hide the latency of prefetching the data structures. The 2078 * naming convention is presented in the diagram below: 2079 * 2080 * p00 _______ p10 _______ p20 _______ p30 _______ 2081 * ----->| |----->| |----->| |----->| |-----> 2082 * | 0 | | 1 | | 2 | | 3 | 2083 * ----->|_______|----->|_______|----->|_______|----->|_______|-----> 2084 * p01 p11 p21 p31 2085 * 2086 */ 2087 int 2088 rte_sched_port_enqueue(struct rte_sched_port *port, struct rte_mbuf **pkts, 2089 uint32_t n_pkts) 2090 { 2091 struct rte_mbuf *pkt00, *pkt01, *pkt10, *pkt11, *pkt20, *pkt21, 2092 *pkt30, *pkt31, *pkt_last; 2093 struct rte_mbuf **q00_base, **q01_base, **q10_base, **q11_base, 2094 **q20_base, **q21_base, **q30_base, **q31_base, **q_last_base; 2095 struct rte_sched_subport *subport00, *subport01, *subport10, *subport11, 2096 *subport20, *subport21, *subport30, *subport31, *subport_last; 2097 uint32_t q00, q01, q10, q11, q20, q21, q30, q31, q_last; 2098 uint32_t r00, r01, r10, r11, r20, r21, r30, r31, r_last; 2099 uint32_t subport_qmask; 2100 uint32_t result, i; 2101 2102 result = 0; 2103 subport_qmask = (1 << (port->n_pipes_per_subport_log2 + 4)) - 1; 2104 2105 /* 2106 * Less then 6 input packets available, which is not enough to 2107 * feed the pipeline 2108 */ 2109 if (unlikely(n_pkts < 6)) { 2110 struct rte_sched_subport *subports[5]; 2111 struct rte_mbuf **q_base[5]; 2112 uint32_t q[5]; 2113 2114 /* Prefetch the mbuf structure of each packet */ 2115 for (i = 0; i < n_pkts; i++) 2116 rte_prefetch0(pkts[i]); 2117 2118 /* Prefetch the subport structure for each packet */ 2119 for (i = 0; i < n_pkts; i++) 2120 subports[i] = rte_sched_port_subport(port, pkts[i]); 2121 2122 /* Prefetch the queue structure for each queue */ 2123 for (i = 0; i < n_pkts; i++) 2124 q[i] = rte_sched_port_enqueue_qptrs_prefetch0(subports[i], 2125 pkts[i], subport_qmask); 2126 2127 /* Prefetch the write pointer location of each queue */ 2128 for (i = 0; i < n_pkts; i++) { 2129 q_base[i] = rte_sched_subport_pipe_qbase(subports[i], q[i]); 2130 rte_sched_port_enqueue_qwa_prefetch0(port, subports[i], 2131 q[i], q_base[i]); 2132 } 2133 2134 /* Write each packet to its queue */ 2135 for (i = 0; i < n_pkts; i++) 2136 result += rte_sched_port_enqueue_qwa(port, subports[i], 2137 q[i], q_base[i], pkts[i]); 2138 2139 return result; 2140 } 2141 2142 /* Feed the first 3 stages of the pipeline (6 packets needed) */ 2143 pkt20 = pkts[0]; 2144 pkt21 = pkts[1]; 2145 rte_prefetch0(pkt20); 2146 rte_prefetch0(pkt21); 2147 2148 pkt10 = pkts[2]; 2149 pkt11 = pkts[3]; 2150 rte_prefetch0(pkt10); 2151 rte_prefetch0(pkt11); 2152 2153 subport20 = rte_sched_port_subport(port, pkt20); 2154 subport21 = rte_sched_port_subport(port, pkt21); 2155 q20 = rte_sched_port_enqueue_qptrs_prefetch0(subport20, 2156 pkt20, subport_qmask); 2157 q21 = rte_sched_port_enqueue_qptrs_prefetch0(subport21, 2158 pkt21, subport_qmask); 2159 2160 pkt00 = pkts[4]; 2161 pkt01 = pkts[5]; 2162 rte_prefetch0(pkt00); 2163 rte_prefetch0(pkt01); 2164 2165 subport10 = rte_sched_port_subport(port, pkt10); 2166 subport11 = rte_sched_port_subport(port, pkt11); 2167 q10 = rte_sched_port_enqueue_qptrs_prefetch0(subport10, 2168 pkt10, subport_qmask); 2169 q11 = rte_sched_port_enqueue_qptrs_prefetch0(subport11, 2170 pkt11, subport_qmask); 2171 2172 q20_base = rte_sched_subport_pipe_qbase(subport20, q20); 2173 q21_base = rte_sched_subport_pipe_qbase(subport21, q21); 2174 rte_sched_port_enqueue_qwa_prefetch0(port, subport20, q20, q20_base); 2175 rte_sched_port_enqueue_qwa_prefetch0(port, subport21, q21, q21_base); 2176 2177 /* Run the pipeline */ 2178 for (i = 6; i < (n_pkts & (~1)); i += 2) { 2179 /* Propagate stage inputs */ 2180 pkt30 = pkt20; 2181 pkt31 = pkt21; 2182 pkt20 = pkt10; 2183 pkt21 = pkt11; 2184 pkt10 = pkt00; 2185 pkt11 = pkt01; 2186 q30 = q20; 2187 q31 = q21; 2188 q20 = q10; 2189 q21 = q11; 2190 subport30 = subport20; 2191 subport31 = subport21; 2192 subport20 = subport10; 2193 subport21 = subport11; 2194 q30_base = q20_base; 2195 q31_base = q21_base; 2196 2197 /* Stage 0: Get packets in */ 2198 pkt00 = pkts[i]; 2199 pkt01 = pkts[i + 1]; 2200 rte_prefetch0(pkt00); 2201 rte_prefetch0(pkt01); 2202 2203 /* Stage 1: Prefetch subport and queue structure storing queue pointers */ 2204 subport10 = rte_sched_port_subport(port, pkt10); 2205 subport11 = rte_sched_port_subport(port, pkt11); 2206 q10 = rte_sched_port_enqueue_qptrs_prefetch0(subport10, 2207 pkt10, subport_qmask); 2208 q11 = rte_sched_port_enqueue_qptrs_prefetch0(subport11, 2209 pkt11, subport_qmask); 2210 2211 /* Stage 2: Prefetch queue write location */ 2212 q20_base = rte_sched_subport_pipe_qbase(subport20, q20); 2213 q21_base = rte_sched_subport_pipe_qbase(subport21, q21); 2214 rte_sched_port_enqueue_qwa_prefetch0(port, subport20, q20, q20_base); 2215 rte_sched_port_enqueue_qwa_prefetch0(port, subport21, q21, q21_base); 2216 2217 /* Stage 3: Write packet to queue and activate queue */ 2218 r30 = rte_sched_port_enqueue_qwa(port, subport30, 2219 q30, q30_base, pkt30); 2220 r31 = rte_sched_port_enqueue_qwa(port, subport31, 2221 q31, q31_base, pkt31); 2222 result += r30 + r31; 2223 } 2224 2225 /* 2226 * Drain the pipeline (exactly 6 packets). 2227 * Handle the last packet in the case 2228 * of an odd number of input packets. 2229 */ 2230 pkt_last = pkts[n_pkts - 1]; 2231 rte_prefetch0(pkt_last); 2232 2233 subport00 = rte_sched_port_subport(port, pkt00); 2234 subport01 = rte_sched_port_subport(port, pkt01); 2235 q00 = rte_sched_port_enqueue_qptrs_prefetch0(subport00, 2236 pkt00, subport_qmask); 2237 q01 = rte_sched_port_enqueue_qptrs_prefetch0(subport01, 2238 pkt01, subport_qmask); 2239 2240 q10_base = rte_sched_subport_pipe_qbase(subport10, q10); 2241 q11_base = rte_sched_subport_pipe_qbase(subport11, q11); 2242 rte_sched_port_enqueue_qwa_prefetch0(port, subport10, q10, q10_base); 2243 rte_sched_port_enqueue_qwa_prefetch0(port, subport11, q11, q11_base); 2244 2245 r20 = rte_sched_port_enqueue_qwa(port, subport20, 2246 q20, q20_base, pkt20); 2247 r21 = rte_sched_port_enqueue_qwa(port, subport21, 2248 q21, q21_base, pkt21); 2249 result += r20 + r21; 2250 2251 subport_last = rte_sched_port_subport(port, pkt_last); 2252 q_last = rte_sched_port_enqueue_qptrs_prefetch0(subport_last, 2253 pkt_last, subport_qmask); 2254 2255 q00_base = rte_sched_subport_pipe_qbase(subport00, q00); 2256 q01_base = rte_sched_subport_pipe_qbase(subport01, q01); 2257 rte_sched_port_enqueue_qwa_prefetch0(port, subport00, q00, q00_base); 2258 rte_sched_port_enqueue_qwa_prefetch0(port, subport01, q01, q01_base); 2259 2260 r10 = rte_sched_port_enqueue_qwa(port, subport10, q10, 2261 q10_base, pkt10); 2262 r11 = rte_sched_port_enqueue_qwa(port, subport11, q11, 2263 q11_base, pkt11); 2264 result += r10 + r11; 2265 2266 q_last_base = rte_sched_subport_pipe_qbase(subport_last, q_last); 2267 rte_sched_port_enqueue_qwa_prefetch0(port, subport_last, 2268 q_last, q_last_base); 2269 2270 r00 = rte_sched_port_enqueue_qwa(port, subport00, q00, 2271 q00_base, pkt00); 2272 r01 = rte_sched_port_enqueue_qwa(port, subport01, q01, 2273 q01_base, pkt01); 2274 result += r00 + r01; 2275 2276 if (n_pkts & 1) { 2277 r_last = rte_sched_port_enqueue_qwa(port, subport_last, 2278 q_last, q_last_base, pkt_last); 2279 result += r_last; 2280 } 2281 2282 return result; 2283 } 2284 2285 static inline uint64_t 2286 grinder_tc_ov_credits_update(struct rte_sched_port *port, 2287 struct rte_sched_subport *subport, uint32_t pos) 2288 { 2289 struct rte_sched_grinder *grinder = subport->grinder + pos; 2290 struct rte_sched_subport_profile *sp = grinder->subport_params; 2291 uint64_t tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 2292 uint64_t tc_consumption = 0, tc_ov_consumption_max; 2293 uint64_t tc_ov_wm = subport->tc_ov_wm; 2294 uint32_t i; 2295 2296 if (subport->tc_ov == 0) 2297 return subport->tc_ov_wm_max; 2298 2299 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASS_BE; i++) { 2300 tc_ov_consumption[i] = sp->tc_credits_per_period[i] 2301 - subport->tc_credits[i]; 2302 tc_consumption += tc_ov_consumption[i]; 2303 } 2304 2305 tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASS_BE] = 2306 sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] - 2307 subport->tc_credits[RTE_SCHED_TRAFFIC_CLASS_BE]; 2308 2309 tc_ov_consumption_max = 2310 sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] - 2311 tc_consumption; 2312 2313 if (tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASS_BE] > 2314 (tc_ov_consumption_max - port->mtu)) { 2315 tc_ov_wm -= tc_ov_wm >> 7; 2316 if (tc_ov_wm < subport->tc_ov_wm_min) 2317 tc_ov_wm = subport->tc_ov_wm_min; 2318 2319 return tc_ov_wm; 2320 } 2321 2322 tc_ov_wm += (tc_ov_wm >> 7) + 1; 2323 if (tc_ov_wm > subport->tc_ov_wm_max) 2324 tc_ov_wm = subport->tc_ov_wm_max; 2325 2326 return tc_ov_wm; 2327 } 2328 2329 static inline void 2330 grinder_credits_update(struct rte_sched_port *port, 2331 struct rte_sched_subport *subport, uint32_t pos) 2332 { 2333 struct rte_sched_grinder *grinder = subport->grinder + pos; 2334 struct rte_sched_pipe *pipe = grinder->pipe; 2335 struct rte_sched_pipe_profile *params = grinder->pipe_params; 2336 struct rte_sched_subport_profile *sp = grinder->subport_params; 2337 uint64_t n_periods; 2338 uint32_t i; 2339 2340 /* Subport TB */ 2341 n_periods = (port->time - subport->tb_time) / sp->tb_period; 2342 subport->tb_credits += n_periods * sp->tb_credits_per_period; 2343 subport->tb_credits = RTE_MIN(subport->tb_credits, sp->tb_size); 2344 subport->tb_time += n_periods * sp->tb_period; 2345 2346 /* Pipe TB */ 2347 n_periods = (port->time - pipe->tb_time) / params->tb_period; 2348 pipe->tb_credits += n_periods * params->tb_credits_per_period; 2349 pipe->tb_credits = RTE_MIN(pipe->tb_credits, params->tb_size); 2350 pipe->tb_time += n_periods * params->tb_period; 2351 2352 /* Subport TCs */ 2353 if (unlikely(port->time >= subport->tc_time)) { 2354 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2355 subport->tc_credits[i] = sp->tc_credits_per_period[i]; 2356 2357 subport->tc_time = port->time + sp->tc_period; 2358 } 2359 2360 /* Pipe TCs */ 2361 if (unlikely(port->time >= pipe->tc_time)) { 2362 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2363 pipe->tc_credits[i] = params->tc_credits_per_period[i]; 2364 pipe->tc_time = port->time + params->tc_period; 2365 } 2366 } 2367 2368 static inline void 2369 grinder_credits_update_with_tc_ov(struct rte_sched_port *port, 2370 struct rte_sched_subport *subport, uint32_t pos) 2371 { 2372 struct rte_sched_grinder *grinder = subport->grinder + pos; 2373 struct rte_sched_pipe *pipe = grinder->pipe; 2374 struct rte_sched_pipe_profile *params = grinder->pipe_params; 2375 struct rte_sched_subport_profile *sp = grinder->subport_params; 2376 uint64_t n_periods; 2377 uint32_t i; 2378 2379 /* Subport TB */ 2380 n_periods = (port->time - subport->tb_time) / sp->tb_period; 2381 subport->tb_credits += n_periods * sp->tb_credits_per_period; 2382 subport->tb_credits = RTE_MIN(subport->tb_credits, sp->tb_size); 2383 subport->tb_time += n_periods * sp->tb_period; 2384 2385 /* Pipe TB */ 2386 n_periods = (port->time - pipe->tb_time) / params->tb_period; 2387 pipe->tb_credits += n_periods * params->tb_credits_per_period; 2388 pipe->tb_credits = RTE_MIN(pipe->tb_credits, params->tb_size); 2389 pipe->tb_time += n_periods * params->tb_period; 2390 2391 /* Subport TCs */ 2392 if (unlikely(port->time >= subport->tc_time)) { 2393 subport->tc_ov_wm = 2394 grinder_tc_ov_credits_update(port, subport, pos); 2395 2396 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2397 subport->tc_credits[i] = sp->tc_credits_per_period[i]; 2398 2399 subport->tc_time = port->time + sp->tc_period; 2400 subport->tc_ov_period_id++; 2401 } 2402 2403 /* Pipe TCs */ 2404 if (unlikely(port->time >= pipe->tc_time)) { 2405 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2406 pipe->tc_credits[i] = params->tc_credits_per_period[i]; 2407 pipe->tc_time = port->time + params->tc_period; 2408 } 2409 2410 /* Pipe TCs - Oversubscription */ 2411 if (unlikely(pipe->tc_ov_period_id != subport->tc_ov_period_id)) { 2412 pipe->tc_ov_credits = subport->tc_ov_wm * params->tc_ov_weight; 2413 2414 pipe->tc_ov_period_id = subport->tc_ov_period_id; 2415 } 2416 } 2417 2418 static inline int 2419 grinder_credits_check(struct rte_sched_port *port, 2420 struct rte_sched_subport *subport, uint32_t pos) 2421 { 2422 struct rte_sched_grinder *grinder = subport->grinder + pos; 2423 struct rte_sched_pipe *pipe = grinder->pipe; 2424 struct rte_mbuf *pkt = grinder->pkt; 2425 uint32_t tc_index = grinder->tc_index; 2426 uint64_t pkt_len = pkt->pkt_len + port->frame_overhead; 2427 uint64_t subport_tb_credits = subport->tb_credits; 2428 uint64_t subport_tc_credits = subport->tc_credits[tc_index]; 2429 uint64_t pipe_tb_credits = pipe->tb_credits; 2430 uint64_t pipe_tc_credits = pipe->tc_credits[tc_index]; 2431 int enough_credits; 2432 2433 /* Check pipe and subport credits */ 2434 enough_credits = (pkt_len <= subport_tb_credits) && 2435 (pkt_len <= subport_tc_credits) && 2436 (pkt_len <= pipe_tb_credits) && 2437 (pkt_len <= pipe_tc_credits); 2438 2439 if (!enough_credits) 2440 return 0; 2441 2442 /* Update pipe and subport credits */ 2443 subport->tb_credits -= pkt_len; 2444 subport->tc_credits[tc_index] -= pkt_len; 2445 pipe->tb_credits -= pkt_len; 2446 pipe->tc_credits[tc_index] -= pkt_len; 2447 2448 return 1; 2449 } 2450 2451 static inline int 2452 grinder_credits_check_with_tc_ov(struct rte_sched_port *port, 2453 struct rte_sched_subport *subport, uint32_t pos) 2454 { 2455 struct rte_sched_grinder *grinder = subport->grinder + pos; 2456 struct rte_sched_pipe *pipe = grinder->pipe; 2457 struct rte_mbuf *pkt = grinder->pkt; 2458 uint32_t tc_index = grinder->tc_index; 2459 uint64_t pkt_len = pkt->pkt_len + port->frame_overhead; 2460 uint64_t subport_tb_credits = subport->tb_credits; 2461 uint64_t subport_tc_credits = subport->tc_credits[tc_index]; 2462 uint64_t pipe_tb_credits = pipe->tb_credits; 2463 uint64_t pipe_tc_credits = pipe->tc_credits[tc_index]; 2464 uint64_t pipe_tc_ov_mask1[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 2465 uint64_t pipe_tc_ov_mask2[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE] = {0}; 2466 uint64_t pipe_tc_ov_credits; 2467 uint32_t i; 2468 int enough_credits; 2469 2470 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2471 pipe_tc_ov_mask1[i] = ~0LLU; 2472 2473 pipe_tc_ov_mask1[RTE_SCHED_TRAFFIC_CLASS_BE] = pipe->tc_ov_credits; 2474 pipe_tc_ov_mask2[RTE_SCHED_TRAFFIC_CLASS_BE] = ~0LLU; 2475 pipe_tc_ov_credits = pipe_tc_ov_mask1[tc_index]; 2476 2477 /* Check pipe and subport credits */ 2478 enough_credits = (pkt_len <= subport_tb_credits) && 2479 (pkt_len <= subport_tc_credits) && 2480 (pkt_len <= pipe_tb_credits) && 2481 (pkt_len <= pipe_tc_credits) && 2482 (pkt_len <= pipe_tc_ov_credits); 2483 2484 if (!enough_credits) 2485 return 0; 2486 2487 /* Update pipe and subport credits */ 2488 subport->tb_credits -= pkt_len; 2489 subport->tc_credits[tc_index] -= pkt_len; 2490 pipe->tb_credits -= pkt_len; 2491 pipe->tc_credits[tc_index] -= pkt_len; 2492 pipe->tc_ov_credits -= pipe_tc_ov_mask2[tc_index] & pkt_len; 2493 2494 return 1; 2495 } 2496 2497 2498 static inline int 2499 grinder_schedule(struct rte_sched_port *port, 2500 struct rte_sched_subport *subport, uint32_t pos) 2501 { 2502 struct rte_sched_grinder *grinder = subport->grinder + pos; 2503 struct rte_sched_queue *queue = grinder->queue[grinder->qpos]; 2504 uint32_t qindex = grinder->qindex[grinder->qpos]; 2505 struct rte_mbuf *pkt = grinder->pkt; 2506 uint32_t pkt_len = pkt->pkt_len + port->frame_overhead; 2507 uint32_t be_tc_active; 2508 2509 if (subport->tc_ov_enabled) { 2510 if (!grinder_credits_check_with_tc_ov(port, subport, pos)) 2511 return 0; 2512 } else { 2513 if (!grinder_credits_check(port, subport, pos)) 2514 return 0; 2515 } 2516 2517 /* Advance port time */ 2518 port->time += pkt_len; 2519 2520 /* Send packet */ 2521 port->pkts_out[port->n_pkts_out++] = pkt; 2522 queue->qr++; 2523 2524 be_tc_active = (grinder->tc_index == RTE_SCHED_TRAFFIC_CLASS_BE) ? ~0x0 : 0x0; 2525 grinder->wrr_tokens[grinder->qpos] += 2526 (pkt_len * grinder->wrr_cost[grinder->qpos]) & be_tc_active; 2527 2528 if (queue->qr == queue->qw) { 2529 rte_bitmap_clear(subport->bmp, qindex); 2530 grinder->qmask &= ~(1 << grinder->qpos); 2531 if (be_tc_active) 2532 grinder->wrr_mask[grinder->qpos] = 0; 2533 2534 rte_sched_port_red_set_queue_empty_timestamp(port, subport, qindex); 2535 } 2536 2537 rte_sched_port_pie_dequeue(subport, qindex, pkt_len, port->time_cpu_cycles); 2538 2539 /* Reset pipe loop detection */ 2540 subport->pipe_loop = RTE_SCHED_PIPE_INVALID; 2541 grinder->productive = 1; 2542 2543 return 1; 2544 } 2545 2546 static inline int 2547 grinder_pipe_exists(struct rte_sched_subport *subport, uint32_t base_pipe) 2548 { 2549 uint32_t i; 2550 2551 for (i = 0; i < RTE_SCHED_PORT_N_GRINDERS; i++) { 2552 if (subport->grinder_base_bmp_pos[i] == base_pipe) 2553 return 1; 2554 } 2555 2556 return 0; 2557 } 2558 2559 static inline void 2560 grinder_pcache_populate(struct rte_sched_subport *subport, 2561 uint32_t pos, uint32_t bmp_pos, uint64_t bmp_slab) 2562 { 2563 struct rte_sched_grinder *grinder = subport->grinder + pos; 2564 uint16_t w[4]; 2565 2566 grinder->pcache_w = 0; 2567 grinder->pcache_r = 0; 2568 2569 w[0] = (uint16_t) bmp_slab; 2570 w[1] = (uint16_t) (bmp_slab >> 16); 2571 w[2] = (uint16_t) (bmp_slab >> 32); 2572 w[3] = (uint16_t) (bmp_slab >> 48); 2573 2574 grinder->pcache_qmask[grinder->pcache_w] = w[0]; 2575 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos; 2576 grinder->pcache_w += (w[0] != 0); 2577 2578 grinder->pcache_qmask[grinder->pcache_w] = w[1]; 2579 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 16; 2580 grinder->pcache_w += (w[1] != 0); 2581 2582 grinder->pcache_qmask[grinder->pcache_w] = w[2]; 2583 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 32; 2584 grinder->pcache_w += (w[2] != 0); 2585 2586 grinder->pcache_qmask[grinder->pcache_w] = w[3]; 2587 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 48; 2588 grinder->pcache_w += (w[3] != 0); 2589 } 2590 2591 static inline void 2592 grinder_tccache_populate(struct rte_sched_subport *subport, 2593 uint32_t pos, uint32_t qindex, uint16_t qmask) 2594 { 2595 struct rte_sched_grinder *grinder = subport->grinder + pos; 2596 uint8_t b, i; 2597 2598 grinder->tccache_w = 0; 2599 grinder->tccache_r = 0; 2600 2601 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASS_BE; i++) { 2602 b = (uint8_t) ((qmask >> i) & 0x1); 2603 grinder->tccache_qmask[grinder->tccache_w] = b; 2604 grinder->tccache_qindex[grinder->tccache_w] = qindex + i; 2605 grinder->tccache_w += (b != 0); 2606 } 2607 2608 b = (uint8_t) (qmask >> (RTE_SCHED_TRAFFIC_CLASS_BE)); 2609 grinder->tccache_qmask[grinder->tccache_w] = b; 2610 grinder->tccache_qindex[grinder->tccache_w] = qindex + 2611 RTE_SCHED_TRAFFIC_CLASS_BE; 2612 grinder->tccache_w += (b != 0); 2613 } 2614 2615 static inline int 2616 grinder_next_tc(struct rte_sched_port *port, 2617 struct rte_sched_subport *subport, uint32_t pos) 2618 { 2619 struct rte_sched_grinder *grinder = subport->grinder + pos; 2620 struct rte_mbuf **qbase; 2621 uint32_t qindex; 2622 uint16_t qsize; 2623 2624 if (grinder->tccache_r == grinder->tccache_w) 2625 return 0; 2626 2627 qindex = grinder->tccache_qindex[grinder->tccache_r]; 2628 qbase = rte_sched_subport_pipe_qbase(subport, qindex); 2629 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 2630 2631 grinder->tc_index = rte_sched_port_pipe_tc(port, qindex); 2632 grinder->qmask = grinder->tccache_qmask[grinder->tccache_r]; 2633 grinder->qsize = qsize; 2634 2635 if (grinder->tc_index < RTE_SCHED_TRAFFIC_CLASS_BE) { 2636 grinder->queue[0] = subport->queue + qindex; 2637 grinder->qbase[0] = qbase; 2638 grinder->qindex[0] = qindex; 2639 grinder->tccache_r++; 2640 2641 return 1; 2642 } 2643 2644 grinder->queue[0] = subport->queue + qindex; 2645 grinder->queue[1] = subport->queue + qindex + 1; 2646 grinder->queue[2] = subport->queue + qindex + 2; 2647 grinder->queue[3] = subport->queue + qindex + 3; 2648 2649 grinder->qbase[0] = qbase; 2650 grinder->qbase[1] = qbase + qsize; 2651 grinder->qbase[2] = qbase + 2 * qsize; 2652 grinder->qbase[3] = qbase + 3 * qsize; 2653 2654 grinder->qindex[0] = qindex; 2655 grinder->qindex[1] = qindex + 1; 2656 grinder->qindex[2] = qindex + 2; 2657 grinder->qindex[3] = qindex + 3; 2658 2659 grinder->tccache_r++; 2660 return 1; 2661 } 2662 2663 static inline int 2664 grinder_next_pipe(struct rte_sched_port *port, 2665 struct rte_sched_subport *subport, uint32_t pos) 2666 { 2667 struct rte_sched_grinder *grinder = subport->grinder + pos; 2668 uint32_t pipe_qindex; 2669 uint16_t pipe_qmask; 2670 2671 if (grinder->pcache_r < grinder->pcache_w) { 2672 pipe_qmask = grinder->pcache_qmask[grinder->pcache_r]; 2673 pipe_qindex = grinder->pcache_qindex[grinder->pcache_r]; 2674 grinder->pcache_r++; 2675 } else { 2676 uint64_t bmp_slab = 0; 2677 uint32_t bmp_pos = 0; 2678 2679 /* Get another non-empty pipe group */ 2680 if (unlikely(rte_bitmap_scan(subport->bmp, &bmp_pos, &bmp_slab) <= 0)) 2681 return 0; 2682 2683 #ifdef RTE_SCHED_DEBUG 2684 debug_check_queue_slab(subport, bmp_pos, bmp_slab); 2685 #endif 2686 2687 /* Return if pipe group already in one of the other grinders */ 2688 subport->grinder_base_bmp_pos[pos] = RTE_SCHED_BMP_POS_INVALID; 2689 if (unlikely(grinder_pipe_exists(subport, bmp_pos))) 2690 return 0; 2691 2692 subport->grinder_base_bmp_pos[pos] = bmp_pos; 2693 2694 /* Install new pipe group into grinder's pipe cache */ 2695 grinder_pcache_populate(subport, pos, bmp_pos, bmp_slab); 2696 2697 pipe_qmask = grinder->pcache_qmask[0]; 2698 pipe_qindex = grinder->pcache_qindex[0]; 2699 grinder->pcache_r = 1; 2700 } 2701 2702 /* Install new pipe in the grinder */ 2703 grinder->pindex = pipe_qindex >> 4; 2704 grinder->subport = subport; 2705 grinder->pipe = subport->pipe + grinder->pindex; 2706 grinder->pipe_params = NULL; /* to be set after the pipe structure is prefetched */ 2707 grinder->productive = 0; 2708 2709 grinder_tccache_populate(subport, pos, pipe_qindex, pipe_qmask); 2710 grinder_next_tc(port, subport, pos); 2711 2712 /* Check for pipe exhaustion */ 2713 if (grinder->pindex == subport->pipe_loop) { 2714 subport->pipe_exhaustion = 1; 2715 subport->pipe_loop = RTE_SCHED_PIPE_INVALID; 2716 } 2717 2718 return 1; 2719 } 2720 2721 2722 static inline void 2723 grinder_wrr_load(struct rte_sched_subport *subport, uint32_t pos) 2724 { 2725 struct rte_sched_grinder *grinder = subport->grinder + pos; 2726 struct rte_sched_pipe *pipe = grinder->pipe; 2727 struct rte_sched_pipe_profile *pipe_params = grinder->pipe_params; 2728 uint32_t qmask = grinder->qmask; 2729 2730 grinder->wrr_tokens[0] = 2731 ((uint16_t) pipe->wrr_tokens[0]) << RTE_SCHED_WRR_SHIFT; 2732 grinder->wrr_tokens[1] = 2733 ((uint16_t) pipe->wrr_tokens[1]) << RTE_SCHED_WRR_SHIFT; 2734 grinder->wrr_tokens[2] = 2735 ((uint16_t) pipe->wrr_tokens[2]) << RTE_SCHED_WRR_SHIFT; 2736 grinder->wrr_tokens[3] = 2737 ((uint16_t) pipe->wrr_tokens[3]) << RTE_SCHED_WRR_SHIFT; 2738 2739 grinder->wrr_mask[0] = (qmask & 0x1) * 0xFFFF; 2740 grinder->wrr_mask[1] = ((qmask >> 1) & 0x1) * 0xFFFF; 2741 grinder->wrr_mask[2] = ((qmask >> 2) & 0x1) * 0xFFFF; 2742 grinder->wrr_mask[3] = ((qmask >> 3) & 0x1) * 0xFFFF; 2743 2744 grinder->wrr_cost[0] = pipe_params->wrr_cost[0]; 2745 grinder->wrr_cost[1] = pipe_params->wrr_cost[1]; 2746 grinder->wrr_cost[2] = pipe_params->wrr_cost[2]; 2747 grinder->wrr_cost[3] = pipe_params->wrr_cost[3]; 2748 } 2749 2750 static inline void 2751 grinder_wrr_store(struct rte_sched_subport *subport, uint32_t pos) 2752 { 2753 struct rte_sched_grinder *grinder = subport->grinder + pos; 2754 struct rte_sched_pipe *pipe = grinder->pipe; 2755 2756 pipe->wrr_tokens[0] = 2757 (grinder->wrr_tokens[0] & grinder->wrr_mask[0]) >> 2758 RTE_SCHED_WRR_SHIFT; 2759 pipe->wrr_tokens[1] = 2760 (grinder->wrr_tokens[1] & grinder->wrr_mask[1]) >> 2761 RTE_SCHED_WRR_SHIFT; 2762 pipe->wrr_tokens[2] = 2763 (grinder->wrr_tokens[2] & grinder->wrr_mask[2]) >> 2764 RTE_SCHED_WRR_SHIFT; 2765 pipe->wrr_tokens[3] = 2766 (grinder->wrr_tokens[3] & grinder->wrr_mask[3]) >> 2767 RTE_SCHED_WRR_SHIFT; 2768 } 2769 2770 static inline void 2771 grinder_wrr(struct rte_sched_subport *subport, uint32_t pos) 2772 { 2773 struct rte_sched_grinder *grinder = subport->grinder + pos; 2774 uint16_t wrr_tokens_min; 2775 2776 grinder->wrr_tokens[0] |= ~grinder->wrr_mask[0]; 2777 grinder->wrr_tokens[1] |= ~grinder->wrr_mask[1]; 2778 grinder->wrr_tokens[2] |= ~grinder->wrr_mask[2]; 2779 grinder->wrr_tokens[3] |= ~grinder->wrr_mask[3]; 2780 2781 grinder->qpos = rte_min_pos_4_u16(grinder->wrr_tokens); 2782 wrr_tokens_min = grinder->wrr_tokens[grinder->qpos]; 2783 2784 grinder->wrr_tokens[0] -= wrr_tokens_min; 2785 grinder->wrr_tokens[1] -= wrr_tokens_min; 2786 grinder->wrr_tokens[2] -= wrr_tokens_min; 2787 grinder->wrr_tokens[3] -= wrr_tokens_min; 2788 } 2789 2790 2791 #define grinder_evict(subport, pos) 2792 2793 static inline void 2794 grinder_prefetch_pipe(struct rte_sched_subport *subport, uint32_t pos) 2795 { 2796 struct rte_sched_grinder *grinder = subport->grinder + pos; 2797 2798 rte_prefetch0(grinder->pipe); 2799 rte_prefetch0(grinder->queue[0]); 2800 } 2801 2802 static inline void 2803 grinder_prefetch_tc_queue_arrays(struct rte_sched_subport *subport, uint32_t pos) 2804 { 2805 struct rte_sched_grinder *grinder = subport->grinder + pos; 2806 uint16_t qsize, qr[RTE_SCHED_MAX_QUEUES_PER_TC]; 2807 2808 qsize = grinder->qsize; 2809 grinder->qpos = 0; 2810 2811 if (grinder->tc_index < RTE_SCHED_TRAFFIC_CLASS_BE) { 2812 qr[0] = grinder->queue[0]->qr & (qsize - 1); 2813 2814 rte_prefetch0(grinder->qbase[0] + qr[0]); 2815 return; 2816 } 2817 2818 qr[0] = grinder->queue[0]->qr & (qsize - 1); 2819 qr[1] = grinder->queue[1]->qr & (qsize - 1); 2820 qr[2] = grinder->queue[2]->qr & (qsize - 1); 2821 qr[3] = grinder->queue[3]->qr & (qsize - 1); 2822 2823 rte_prefetch0(grinder->qbase[0] + qr[0]); 2824 rte_prefetch0(grinder->qbase[1] + qr[1]); 2825 2826 grinder_wrr_load(subport, pos); 2827 grinder_wrr(subport, pos); 2828 2829 rte_prefetch0(grinder->qbase[2] + qr[2]); 2830 rte_prefetch0(grinder->qbase[3] + qr[3]); 2831 } 2832 2833 static inline void 2834 grinder_prefetch_mbuf(struct rte_sched_subport *subport, uint32_t pos) 2835 { 2836 struct rte_sched_grinder *grinder = subport->grinder + pos; 2837 uint32_t qpos = grinder->qpos; 2838 struct rte_mbuf **qbase = grinder->qbase[qpos]; 2839 uint16_t qsize = grinder->qsize; 2840 uint16_t qr = grinder->queue[qpos]->qr & (qsize - 1); 2841 2842 grinder->pkt = qbase[qr]; 2843 rte_prefetch0(grinder->pkt); 2844 2845 if (unlikely((qr & 0x7) == 7)) { 2846 uint16_t qr_next = (grinder->queue[qpos]->qr + 1) & (qsize - 1); 2847 2848 rte_prefetch0(qbase + qr_next); 2849 } 2850 } 2851 2852 static inline uint32_t 2853 grinder_handle(struct rte_sched_port *port, 2854 struct rte_sched_subport *subport, uint32_t pos) 2855 { 2856 struct rte_sched_grinder *grinder = subport->grinder + pos; 2857 2858 switch (grinder->state) { 2859 case e_GRINDER_PREFETCH_PIPE: 2860 { 2861 if (grinder_next_pipe(port, subport, pos)) { 2862 grinder_prefetch_pipe(subport, pos); 2863 subport->busy_grinders++; 2864 2865 grinder->state = e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS; 2866 return 0; 2867 } 2868 2869 return 0; 2870 } 2871 2872 case e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS: 2873 { 2874 struct rte_sched_pipe *pipe = grinder->pipe; 2875 2876 grinder->pipe_params = subport->pipe_profiles + pipe->profile; 2877 grinder->subport_params = port->subport_profiles + 2878 subport->profile; 2879 2880 grinder_prefetch_tc_queue_arrays(subport, pos); 2881 2882 if (subport->tc_ov_enabled) 2883 grinder_credits_update_with_tc_ov(port, subport, pos); 2884 else 2885 grinder_credits_update(port, subport, pos); 2886 2887 grinder->state = e_GRINDER_PREFETCH_MBUF; 2888 return 0; 2889 } 2890 2891 case e_GRINDER_PREFETCH_MBUF: 2892 { 2893 grinder_prefetch_mbuf(subport, pos); 2894 2895 grinder->state = e_GRINDER_READ_MBUF; 2896 return 0; 2897 } 2898 2899 case e_GRINDER_READ_MBUF: 2900 { 2901 uint32_t wrr_active, result = 0; 2902 2903 result = grinder_schedule(port, subport, pos); 2904 2905 wrr_active = (grinder->tc_index == RTE_SCHED_TRAFFIC_CLASS_BE); 2906 2907 /* Look for next packet within the same TC */ 2908 if (result && grinder->qmask) { 2909 if (wrr_active) 2910 grinder_wrr(subport, pos); 2911 2912 grinder_prefetch_mbuf(subport, pos); 2913 2914 return 1; 2915 } 2916 2917 if (wrr_active) 2918 grinder_wrr_store(subport, pos); 2919 2920 /* Look for another active TC within same pipe */ 2921 if (grinder_next_tc(port, subport, pos)) { 2922 grinder_prefetch_tc_queue_arrays(subport, pos); 2923 2924 grinder->state = e_GRINDER_PREFETCH_MBUF; 2925 return result; 2926 } 2927 2928 if (grinder->productive == 0 && 2929 subport->pipe_loop == RTE_SCHED_PIPE_INVALID) 2930 subport->pipe_loop = grinder->pindex; 2931 2932 grinder_evict(subport, pos); 2933 2934 /* Look for another active pipe */ 2935 if (grinder_next_pipe(port, subport, pos)) { 2936 grinder_prefetch_pipe(subport, pos); 2937 2938 grinder->state = e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS; 2939 return result; 2940 } 2941 2942 /* No active pipe found */ 2943 subport->busy_grinders--; 2944 2945 grinder->state = e_GRINDER_PREFETCH_PIPE; 2946 return result; 2947 } 2948 2949 default: 2950 rte_panic("Algorithmic error (invalid state)\n"); 2951 return 0; 2952 } 2953 } 2954 2955 static inline void 2956 rte_sched_port_time_resync(struct rte_sched_port *port) 2957 { 2958 uint64_t cycles = rte_get_tsc_cycles(); 2959 uint64_t cycles_diff; 2960 uint64_t bytes_diff; 2961 uint32_t i; 2962 2963 if (cycles < port->time_cpu_cycles) 2964 port->time_cpu_cycles = 0; 2965 2966 cycles_diff = cycles - port->time_cpu_cycles; 2967 /* Compute elapsed time in bytes */ 2968 bytes_diff = rte_reciprocal_divide(cycles_diff << RTE_SCHED_TIME_SHIFT, 2969 port->inv_cycles_per_byte); 2970 2971 /* Advance port time */ 2972 port->time_cpu_cycles += 2973 (bytes_diff * port->cycles_per_byte) >> RTE_SCHED_TIME_SHIFT; 2974 port->time_cpu_bytes += bytes_diff; 2975 if (port->time < port->time_cpu_bytes) 2976 port->time = port->time_cpu_bytes; 2977 2978 /* Reset pipe loop detection */ 2979 for (i = 0; i < port->n_subports_per_port; i++) 2980 port->subports[i]->pipe_loop = RTE_SCHED_PIPE_INVALID; 2981 } 2982 2983 static inline int 2984 rte_sched_port_exceptions(struct rte_sched_subport *subport, int second_pass) 2985 { 2986 int exceptions; 2987 2988 /* Check if any exception flag is set */ 2989 exceptions = (second_pass && subport->busy_grinders == 0) || 2990 (subport->pipe_exhaustion == 1); 2991 2992 /* Clear exception flags */ 2993 subport->pipe_exhaustion = 0; 2994 2995 return exceptions; 2996 } 2997 2998 int 2999 rte_sched_port_dequeue(struct rte_sched_port *port, struct rte_mbuf **pkts, uint32_t n_pkts) 3000 { 3001 struct rte_sched_subport *subport; 3002 uint32_t subport_id = port->subport_id; 3003 uint32_t i, n_subports = 0, count; 3004 3005 port->pkts_out = pkts; 3006 port->n_pkts_out = 0; 3007 3008 rte_sched_port_time_resync(port); 3009 3010 /* Take each queue in the grinder one step further */ 3011 for (i = 0, count = 0; ; i++) { 3012 subport = port->subports[subport_id]; 3013 3014 count += grinder_handle(port, subport, 3015 i & (RTE_SCHED_PORT_N_GRINDERS - 1)); 3016 3017 if (count == n_pkts) { 3018 subport_id++; 3019 3020 if (subport_id == port->n_subports_per_port) 3021 subport_id = 0; 3022 3023 port->subport_id = subport_id; 3024 break; 3025 } 3026 3027 if (rte_sched_port_exceptions(subport, i >= RTE_SCHED_PORT_N_GRINDERS)) { 3028 i = 0; 3029 subport_id++; 3030 n_subports++; 3031 } 3032 3033 if (subport_id == port->n_subports_per_port) 3034 subport_id = 0; 3035 3036 if (n_subports == port->n_subports_per_port) { 3037 port->subport_id = subport_id; 3038 break; 3039 } 3040 } 3041 3042 return count; 3043 } 3044