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_log.h" 20 #include "rte_sched_common.h" 21 22 #include "rte_approx.h" 23 24 25 #ifdef __INTEL_COMPILER 26 #pragma warning(disable:2259) /* conversion may lose significant bits */ 27 #endif 28 29 #ifndef RTE_SCHED_PORT_N_GRINDERS 30 #define RTE_SCHED_PORT_N_GRINDERS 8 31 #endif 32 33 #define RTE_SCHED_TB_RATE_CONFIG_ERR (1e-7) 34 #define RTE_SCHED_WRR_SHIFT 3 35 #define RTE_SCHED_MAX_QUEUES_PER_TC RTE_SCHED_BE_QUEUES_PER_PIPE 36 #define RTE_SCHED_GRINDER_PCACHE_SIZE (64 / RTE_SCHED_QUEUES_PER_PIPE) 37 #define RTE_SCHED_PIPE_INVALID UINT32_MAX 38 #define RTE_SCHED_BMP_POS_INVALID UINT32_MAX 39 40 /* Scaling for cycles_per_byte calculation 41 * Chosen so that minimum rate is 480 bit/sec 42 */ 43 #define RTE_SCHED_TIME_SHIFT 8 44 45 struct rte_sched_pipe_profile { 46 /* Token bucket (TB) */ 47 uint64_t tb_period; 48 uint64_t tb_credits_per_period; 49 uint64_t tb_size; 50 51 /* Pipe traffic classes */ 52 uint64_t tc_period; 53 uint64_t tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 54 uint8_t tc_ov_weight; 55 56 /* Pipe best-effort traffic class queues */ 57 uint8_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 58 }; 59 60 struct rte_sched_pipe { 61 /* Token bucket (TB) */ 62 uint64_t tb_time; /* time of last update */ 63 uint64_t tb_credits; 64 65 /* Pipe profile and flags */ 66 uint32_t profile; 67 68 /* Traffic classes (TCs) */ 69 uint64_t tc_time; /* time of next update */ 70 uint64_t tc_credits[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 71 72 /* Weighted Round Robin (WRR) */ 73 uint8_t wrr_tokens[RTE_SCHED_BE_QUEUES_PER_PIPE]; 74 75 /* TC oversubscription */ 76 uint64_t tc_ov_credits; 77 uint8_t tc_ov_period_id; 78 } __rte_cache_aligned; 79 80 struct rte_sched_queue { 81 uint16_t qw; 82 uint16_t qr; 83 }; 84 85 struct rte_sched_queue_extra { 86 struct rte_sched_queue_stats stats; 87 union { 88 struct rte_red red; 89 struct rte_pie pie; 90 }; 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 bool cman_enabled; 183 enum rte_sched_cman_mode cman; 184 185 union { 186 struct rte_red_config red_config[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE][RTE_COLORS]; 187 struct rte_pie_config pie_config[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 188 }; 189 190 /* Scheduling loop detection */ 191 uint32_t pipe_loop; 192 uint32_t pipe_exhaustion; 193 194 /* Bitmap */ 195 struct rte_bitmap *bmp; 196 uint32_t grinder_base_bmp_pos[RTE_SCHED_PORT_N_GRINDERS] __rte_aligned_16; 197 198 /* Grinders */ 199 struct rte_sched_grinder grinder[RTE_SCHED_PORT_N_GRINDERS]; 200 uint32_t busy_grinders; 201 202 /* Queue base calculation */ 203 uint32_t qsize_add[RTE_SCHED_QUEUES_PER_PIPE]; 204 uint32_t qsize_sum; 205 206 /* TC oversubscription activation */ 207 int tc_ov_enabled; 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 } __rte_cache_aligned; 217 218 struct rte_sched_port { 219 /* User parameters */ 220 uint32_t n_subports_per_port; 221 uint32_t n_pipes_per_subport; 222 uint32_t n_pipes_per_subport_log2; 223 uint16_t pipe_queue[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 224 uint8_t pipe_tc[RTE_SCHED_QUEUES_PER_PIPE]; 225 uint8_t tc_queue[RTE_SCHED_QUEUES_PER_PIPE]; 226 uint32_t n_subport_profiles; 227 uint32_t n_max_subport_profiles; 228 uint64_t rate; 229 uint32_t mtu; 230 uint32_t frame_overhead; 231 int socket; 232 233 /* Timing */ 234 uint64_t time_cpu_cycles; /* Current CPU time measured in CPU cycles */ 235 uint64_t time_cpu_bytes; /* Current CPU time measured in bytes */ 236 uint64_t time; /* Current NIC TX time measured in bytes */ 237 struct rte_reciprocal inv_cycles_per_byte; /* CPU cycles per byte */ 238 uint64_t cycles_per_byte; 239 240 /* Grinders */ 241 struct rte_mbuf **pkts_out; 242 uint32_t n_pkts_out; 243 uint32_t subport_id; 244 245 /* Large data structures */ 246 struct rte_sched_subport_profile *subport_profiles; 247 struct rte_sched_subport *subports[0] __rte_cache_aligned; 248 } __rte_cache_aligned; 249 250 enum rte_sched_subport_array { 251 e_RTE_SCHED_SUBPORT_ARRAY_PIPE = 0, 252 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE, 253 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA, 254 e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES, 255 e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY, 256 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY, 257 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL, 258 }; 259 260 static inline uint32_t 261 rte_sched_subport_pipe_queues(struct rte_sched_subport *subport) 262 { 263 return RTE_SCHED_QUEUES_PER_PIPE * subport->n_pipes_per_subport_enabled; 264 } 265 266 static inline struct rte_mbuf ** 267 rte_sched_subport_pipe_qbase(struct rte_sched_subport *subport, uint32_t qindex) 268 { 269 uint32_t pindex = qindex >> 4; 270 uint32_t qpos = qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1); 271 272 return (subport->queue_array + pindex * 273 subport->qsize_sum + subport->qsize_add[qpos]); 274 } 275 276 static inline uint16_t 277 rte_sched_subport_pipe_qsize(struct rte_sched_port *port, 278 struct rte_sched_subport *subport, uint32_t qindex) 279 { 280 uint32_t tc = port->pipe_tc[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 281 282 return subport->qsize[tc]; 283 } 284 285 static inline uint32_t 286 rte_sched_port_queues_per_port(struct rte_sched_port *port) 287 { 288 uint32_t n_queues = 0, i; 289 290 for (i = 0; i < port->n_subports_per_port; i++) 291 n_queues += rte_sched_subport_pipe_queues(port->subports[i]); 292 293 return n_queues; 294 } 295 296 static inline uint16_t 297 rte_sched_port_pipe_queue(struct rte_sched_port *port, uint32_t traffic_class) 298 { 299 uint16_t pipe_queue = port->pipe_queue[traffic_class]; 300 301 return pipe_queue; 302 } 303 304 static inline uint8_t 305 rte_sched_port_pipe_tc(struct rte_sched_port *port, uint32_t qindex) 306 { 307 uint8_t pipe_tc = port->pipe_tc[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 308 309 return pipe_tc; 310 } 311 312 static inline uint8_t 313 rte_sched_port_tc_queue(struct rte_sched_port *port, uint32_t qindex) 314 { 315 uint8_t tc_queue = port->tc_queue[qindex & (RTE_SCHED_QUEUES_PER_PIPE - 1)]; 316 317 return tc_queue; 318 } 319 320 static int 321 pipe_profile_check(struct rte_sched_pipe_params *params, 322 uint64_t rate, uint16_t *qsize) 323 { 324 uint32_t i; 325 326 /* Pipe parameters */ 327 if (params == NULL) { 328 SCHED_LOG(ERR, 329 "%s: Incorrect value for parameter params", __func__); 330 return -EINVAL; 331 } 332 333 /* TB rate: non-zero, not greater than port rate */ 334 if (params->tb_rate == 0 || 335 params->tb_rate > rate) { 336 SCHED_LOG(ERR, 337 "%s: Incorrect value for tb rate", __func__); 338 return -EINVAL; 339 } 340 341 /* TB size: non-zero */ 342 if (params->tb_size == 0) { 343 SCHED_LOG(ERR, 344 "%s: Incorrect value for tb size", __func__); 345 return -EINVAL; 346 } 347 348 /* TC rate: non-zero if qsize non-zero, less than pipe rate */ 349 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 350 if ((qsize[i] == 0 && params->tc_rate[i] != 0) || 351 (qsize[i] != 0 && (params->tc_rate[i] == 0 || 352 params->tc_rate[i] > params->tb_rate))) { 353 SCHED_LOG(ERR, 354 "%s: Incorrect value for qsize or tc_rate", __func__); 355 return -EINVAL; 356 } 357 } 358 359 if (params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE] == 0 || 360 qsize[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 361 SCHED_LOG(ERR, 362 "%s: Incorrect value for be traffic class rate", __func__); 363 return -EINVAL; 364 } 365 366 /* TC period: non-zero */ 367 if (params->tc_period == 0) { 368 SCHED_LOG(ERR, 369 "%s: Incorrect value for tc period", __func__); 370 return -EINVAL; 371 } 372 373 /* Best effort tc oversubscription weight: non-zero */ 374 if (params->tc_ov_weight == 0) { 375 SCHED_LOG(ERR, 376 "%s: Incorrect value for tc ov weight", __func__); 377 return -EINVAL; 378 } 379 380 /* Queue WRR weights: non-zero */ 381 for (i = 0; i < RTE_SCHED_BE_QUEUES_PER_PIPE; i++) { 382 if (params->wrr_weights[i] == 0) { 383 SCHED_LOG(ERR, 384 "%s: Incorrect value for wrr weight", __func__); 385 return -EINVAL; 386 } 387 } 388 389 return 0; 390 } 391 392 static int 393 subport_profile_check(struct rte_sched_subport_profile_params *params, 394 uint64_t rate) 395 { 396 uint32_t i; 397 398 /* Check user parameters */ 399 if (params == NULL) { 400 SCHED_LOG(ERR, "%s: " 401 "Incorrect value for parameter params", __func__); 402 return -EINVAL; 403 } 404 405 if (params->tb_rate == 0 || params->tb_rate > rate) { 406 SCHED_LOG(ERR, "%s: " 407 "Incorrect value for tb rate", __func__); 408 return -EINVAL; 409 } 410 411 if (params->tb_size == 0) { 412 SCHED_LOG(ERR, "%s: " 413 "Incorrect value for tb size", __func__); 414 return -EINVAL; 415 } 416 417 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 418 uint64_t tc_rate = params->tc_rate[i]; 419 420 if (tc_rate == 0 || (tc_rate > params->tb_rate)) { 421 SCHED_LOG(ERR, "%s: " 422 "Incorrect value for tc rate", __func__); 423 return -EINVAL; 424 } 425 } 426 427 if (params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 428 SCHED_LOG(ERR, "%s: " 429 "Incorrect tc rate(best effort)", __func__); 430 return -EINVAL; 431 } 432 433 if (params->tc_period == 0) { 434 SCHED_LOG(ERR, "%s: " 435 "Incorrect value for tc period", __func__); 436 return -EINVAL; 437 } 438 439 return 0; 440 } 441 442 static int 443 rte_sched_port_check_params(struct rte_sched_port_params *params) 444 { 445 uint32_t i; 446 447 if (params == NULL) { 448 SCHED_LOG(ERR, 449 "%s: Incorrect value for parameter params", __func__); 450 return -EINVAL; 451 } 452 453 /* socket */ 454 if (params->socket < 0) { 455 SCHED_LOG(ERR, 456 "%s: Incorrect value for socket id", __func__); 457 return -EINVAL; 458 } 459 460 /* rate */ 461 if (params->rate == 0) { 462 SCHED_LOG(ERR, 463 "%s: Incorrect value for rate", __func__); 464 return -EINVAL; 465 } 466 467 /* mtu */ 468 if (params->mtu == 0) { 469 SCHED_LOG(ERR, 470 "%s: Incorrect value for mtu", __func__); 471 return -EINVAL; 472 } 473 474 /* n_subports_per_port: non-zero, limited to 16 bits, power of 2 */ 475 if (params->n_subports_per_port == 0 || 476 params->n_subports_per_port > 1u << 16 || 477 !rte_is_power_of_2(params->n_subports_per_port)) { 478 SCHED_LOG(ERR, 479 "%s: Incorrect value for number of subports", __func__); 480 return -EINVAL; 481 } 482 483 if (params->subport_profiles == NULL || 484 params->n_subport_profiles == 0 || 485 params->n_max_subport_profiles == 0 || 486 params->n_subport_profiles > params->n_max_subport_profiles) { 487 SCHED_LOG(ERR, 488 "%s: Incorrect value for subport profiles", __func__); 489 return -EINVAL; 490 } 491 492 for (i = 0; i < params->n_subport_profiles; i++) { 493 struct rte_sched_subport_profile_params *p = 494 params->subport_profiles + i; 495 int status; 496 497 status = subport_profile_check(p, params->rate); 498 if (status != 0) { 499 SCHED_LOG(ERR, 500 "%s: subport profile check failed(%d)", 501 __func__, status); 502 return -EINVAL; 503 } 504 } 505 506 /* n_pipes_per_subport: non-zero, power of 2 */ 507 if (params->n_pipes_per_subport == 0 || 508 !rte_is_power_of_2(params->n_pipes_per_subport)) { 509 SCHED_LOG(ERR, 510 "%s: Incorrect value for maximum pipes number", __func__); 511 return -EINVAL; 512 } 513 514 return 0; 515 } 516 517 static uint32_t 518 rte_sched_subport_get_array_base(struct rte_sched_subport_params *params, 519 enum rte_sched_subport_array array) 520 { 521 uint32_t n_pipes_per_subport = params->n_pipes_per_subport_enabled; 522 uint32_t n_subport_pipe_queues = 523 RTE_SCHED_QUEUES_PER_PIPE * n_pipes_per_subport; 524 525 uint32_t size_pipe = n_pipes_per_subport * sizeof(struct rte_sched_pipe); 526 uint32_t size_queue = 527 n_subport_pipe_queues * sizeof(struct rte_sched_queue); 528 uint32_t size_queue_extra 529 = n_subport_pipe_queues * sizeof(struct rte_sched_queue_extra); 530 uint32_t size_pipe_profiles = params->n_max_pipe_profiles * 531 sizeof(struct rte_sched_pipe_profile); 532 uint32_t size_bmp_array = 533 rte_bitmap_get_memory_footprint(n_subport_pipe_queues); 534 uint32_t size_per_pipe_queue_array, size_queue_array; 535 536 uint32_t base, i; 537 538 size_per_pipe_queue_array = 0; 539 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 540 if (i < RTE_SCHED_TRAFFIC_CLASS_BE) 541 size_per_pipe_queue_array += 542 params->qsize[i] * sizeof(struct rte_mbuf *); 543 else 544 size_per_pipe_queue_array += RTE_SCHED_MAX_QUEUES_PER_TC * 545 params->qsize[i] * sizeof(struct rte_mbuf *); 546 } 547 size_queue_array = n_pipes_per_subport * size_per_pipe_queue_array; 548 549 base = 0; 550 551 if (array == e_RTE_SCHED_SUBPORT_ARRAY_PIPE) 552 return base; 553 base += RTE_CACHE_LINE_ROUNDUP(size_pipe); 554 555 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE) 556 return base; 557 base += RTE_CACHE_LINE_ROUNDUP(size_queue); 558 559 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA) 560 return base; 561 base += RTE_CACHE_LINE_ROUNDUP(size_queue_extra); 562 563 if (array == e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES) 564 return base; 565 base += RTE_CACHE_LINE_ROUNDUP(size_pipe_profiles); 566 567 if (array == e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY) 568 return base; 569 base += RTE_CACHE_LINE_ROUNDUP(size_bmp_array); 570 571 if (array == e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY) 572 return base; 573 base += RTE_CACHE_LINE_ROUNDUP(size_queue_array); 574 575 return base; 576 } 577 578 static void 579 rte_sched_subport_config_qsize(struct rte_sched_subport *subport) 580 { 581 uint32_t i; 582 583 subport->qsize_add[0] = 0; 584 585 /* Strict priority traffic class */ 586 for (i = 1; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 587 subport->qsize_add[i] = subport->qsize_add[i-1] + subport->qsize[i-1]; 588 589 /* Best-effort traffic class */ 590 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 1] = 591 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE] + 592 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 593 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 2] = 594 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 1] + 595 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 596 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 3] = 597 subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 2] + 598 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 599 600 subport->qsize_sum = subport->qsize_add[RTE_SCHED_TRAFFIC_CLASS_BE + 3] + 601 subport->qsize[RTE_SCHED_TRAFFIC_CLASS_BE]; 602 } 603 604 static void 605 rte_sched_port_log_pipe_profile(struct rte_sched_subport *subport, uint32_t i) 606 { 607 struct rte_sched_pipe_profile *p = subport->pipe_profiles + i; 608 609 RTE_LOG(DEBUG, SCHED, "Low level config for pipe profile %u:\n" 610 " Token bucket: period = %"PRIu64", credits per period = %"PRIu64", size = %"PRIu64"\n" 611 " Traffic classes: period = %"PRIu64",\n" 612 " credits per period = [%"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 613 ", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 614 ", %"PRIu64", %"PRIu64", %"PRIu64"]\n" 615 " Best-effort traffic class oversubscription: weight = %hhu\n" 616 " WRR cost: [%hhu, %hhu, %hhu, %hhu]\n", 617 i, 618 619 /* Token bucket */ 620 p->tb_period, 621 p->tb_credits_per_period, 622 p->tb_size, 623 624 /* Traffic classes */ 625 p->tc_period, 626 p->tc_credits_per_period[0], 627 p->tc_credits_per_period[1], 628 p->tc_credits_per_period[2], 629 p->tc_credits_per_period[3], 630 p->tc_credits_per_period[4], 631 p->tc_credits_per_period[5], 632 p->tc_credits_per_period[6], 633 p->tc_credits_per_period[7], 634 p->tc_credits_per_period[8], 635 p->tc_credits_per_period[9], 636 p->tc_credits_per_period[10], 637 p->tc_credits_per_period[11], 638 p->tc_credits_per_period[12], 639 640 /* Best-effort traffic class oversubscription */ 641 p->tc_ov_weight, 642 643 /* WRR */ 644 p->wrr_cost[0], p->wrr_cost[1], p->wrr_cost[2], p->wrr_cost[3]); 645 } 646 647 static void 648 rte_sched_port_log_subport_profile(struct rte_sched_port *port, uint32_t i) 649 { 650 struct rte_sched_subport_profile *p = port->subport_profiles + i; 651 652 RTE_LOG(DEBUG, SCHED, "Low level config for subport profile %u:\n" 653 "Token bucket: period = %"PRIu64", credits per period = %"PRIu64"," 654 "size = %"PRIu64"\n" 655 "Traffic classes: period = %"PRIu64",\n" 656 "credits per period = [%"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 657 " %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64", %"PRIu64 658 " %"PRIu64", %"PRIu64", %"PRIu64"]\n", 659 i, 660 661 /* Token bucket */ 662 p->tb_period, 663 p->tb_credits_per_period, 664 p->tb_size, 665 666 /* Traffic classes */ 667 p->tc_period, 668 p->tc_credits_per_period[0], 669 p->tc_credits_per_period[1], 670 p->tc_credits_per_period[2], 671 p->tc_credits_per_period[3], 672 p->tc_credits_per_period[4], 673 p->tc_credits_per_period[5], 674 p->tc_credits_per_period[6], 675 p->tc_credits_per_period[7], 676 p->tc_credits_per_period[8], 677 p->tc_credits_per_period[9], 678 p->tc_credits_per_period[10], 679 p->tc_credits_per_period[11], 680 p->tc_credits_per_period[12]); 681 } 682 683 static inline uint64_t 684 rte_sched_time_ms_to_bytes(uint64_t time_ms, uint64_t rate) 685 { 686 uint64_t time = time_ms; 687 688 time = (time * rate) / 1000; 689 690 return time; 691 } 692 693 static void 694 rte_sched_pipe_profile_convert(struct rte_sched_subport *subport, 695 struct rte_sched_pipe_params *src, 696 struct rte_sched_pipe_profile *dst, 697 uint64_t rate) 698 { 699 uint32_t wrr_cost[RTE_SCHED_BE_QUEUES_PER_PIPE]; 700 uint32_t lcd1, lcd2, lcd; 701 uint32_t i; 702 703 /* Token Bucket */ 704 if (src->tb_rate == rate) { 705 dst->tb_credits_per_period = 1; 706 dst->tb_period = 1; 707 } else { 708 double tb_rate = (double) src->tb_rate 709 / (double) rate; 710 double d = RTE_SCHED_TB_RATE_CONFIG_ERR; 711 712 rte_approx_64(tb_rate, d, &dst->tb_credits_per_period, 713 &dst->tb_period); 714 } 715 716 dst->tb_size = src->tb_size; 717 718 /* Traffic Classes */ 719 dst->tc_period = rte_sched_time_ms_to_bytes(src->tc_period, 720 rate); 721 722 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 723 if (subport->qsize[i]) 724 dst->tc_credits_per_period[i] 725 = rte_sched_time_ms_to_bytes(src->tc_period, 726 src->tc_rate[i]); 727 728 dst->tc_ov_weight = src->tc_ov_weight; 729 730 /* WRR queues */ 731 wrr_cost[0] = src->wrr_weights[0]; 732 wrr_cost[1] = src->wrr_weights[1]; 733 wrr_cost[2] = src->wrr_weights[2]; 734 wrr_cost[3] = src->wrr_weights[3]; 735 736 lcd1 = rte_get_lcd(wrr_cost[0], wrr_cost[1]); 737 lcd2 = rte_get_lcd(wrr_cost[2], wrr_cost[3]); 738 lcd = rte_get_lcd(lcd1, lcd2); 739 740 wrr_cost[0] = lcd / wrr_cost[0]; 741 wrr_cost[1] = lcd / wrr_cost[1]; 742 wrr_cost[2] = lcd / wrr_cost[2]; 743 wrr_cost[3] = lcd / wrr_cost[3]; 744 745 dst->wrr_cost[0] = (uint8_t) wrr_cost[0]; 746 dst->wrr_cost[1] = (uint8_t) wrr_cost[1]; 747 dst->wrr_cost[2] = (uint8_t) wrr_cost[2]; 748 dst->wrr_cost[3] = (uint8_t) wrr_cost[3]; 749 } 750 751 static void 752 rte_sched_subport_profile_convert(struct rte_sched_subport_profile_params *src, 753 struct rte_sched_subport_profile *dst, 754 uint64_t rate) 755 { 756 uint32_t i; 757 758 /* Token Bucket */ 759 if (src->tb_rate == rate) { 760 dst->tb_credits_per_period = 1; 761 dst->tb_period = 1; 762 } else { 763 double tb_rate = (double) src->tb_rate 764 / (double) rate; 765 double d = RTE_SCHED_TB_RATE_CONFIG_ERR; 766 767 rte_approx_64(tb_rate, d, &dst->tb_credits_per_period, 768 &dst->tb_period); 769 } 770 771 dst->tb_size = src->tb_size; 772 773 /* Traffic Classes */ 774 dst->tc_period = rte_sched_time_ms_to_bytes(src->tc_period, rate); 775 776 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 777 dst->tc_credits_per_period[i] 778 = rte_sched_time_ms_to_bytes(src->tc_period, 779 src->tc_rate[i]); 780 } 781 782 static void 783 rte_sched_subport_config_pipe_profile_table(struct rte_sched_subport *subport, 784 struct rte_sched_subport_params *params, uint64_t rate) 785 { 786 uint32_t i; 787 788 for (i = 0; i < subport->n_pipe_profiles; i++) { 789 struct rte_sched_pipe_params *src = params->pipe_profiles + i; 790 struct rte_sched_pipe_profile *dst = subport->pipe_profiles + i; 791 792 rte_sched_pipe_profile_convert(subport, src, dst, rate); 793 rte_sched_port_log_pipe_profile(subport, i); 794 } 795 796 subport->pipe_tc_be_rate_max = 0; 797 for (i = 0; i < subport->n_pipe_profiles; i++) { 798 struct rte_sched_pipe_params *src = params->pipe_profiles + i; 799 uint64_t pipe_tc_be_rate = src->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]; 800 801 if (subport->pipe_tc_be_rate_max < pipe_tc_be_rate) 802 subport->pipe_tc_be_rate_max = pipe_tc_be_rate; 803 } 804 } 805 806 static void 807 rte_sched_port_config_subport_profile_table(struct rte_sched_port *port, 808 struct rte_sched_port_params *params, 809 uint64_t rate) 810 { 811 uint32_t i; 812 813 for (i = 0; i < port->n_subport_profiles; i++) { 814 struct rte_sched_subport_profile_params *src 815 = params->subport_profiles + i; 816 struct rte_sched_subport_profile *dst 817 = port->subport_profiles + i; 818 819 rte_sched_subport_profile_convert(src, dst, rate); 820 rte_sched_port_log_subport_profile(port, i); 821 } 822 } 823 824 static int 825 rte_sched_subport_check_params(struct rte_sched_subport_params *params, 826 uint32_t n_max_pipes_per_subport, 827 uint64_t rate) 828 { 829 uint32_t i; 830 831 /* Check user parameters */ 832 if (params == NULL) { 833 SCHED_LOG(ERR, 834 "%s: Incorrect value for parameter params", __func__); 835 return -EINVAL; 836 } 837 838 /* qsize: if non-zero, power of 2, 839 * no bigger than 32K (due to 16-bit read/write pointers) 840 */ 841 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 842 uint16_t qsize = params->qsize[i]; 843 844 if (qsize != 0 && !rte_is_power_of_2(qsize)) { 845 SCHED_LOG(ERR, 846 "%s: Incorrect value for qsize", __func__); 847 return -EINVAL; 848 } 849 } 850 851 if (params->qsize[RTE_SCHED_TRAFFIC_CLASS_BE] == 0) { 852 SCHED_LOG(ERR, "%s: Incorrect qsize", __func__); 853 return -EINVAL; 854 } 855 856 /* n_pipes_per_subport: non-zero, power of 2 */ 857 if (params->n_pipes_per_subport_enabled == 0 || 858 params->n_pipes_per_subport_enabled > n_max_pipes_per_subport || 859 !rte_is_power_of_2(params->n_pipes_per_subport_enabled)) { 860 SCHED_LOG(ERR, 861 "%s: Incorrect value for pipes number", __func__); 862 return -EINVAL; 863 } 864 865 /* pipe_profiles and n_pipe_profiles */ 866 if (params->pipe_profiles == NULL || 867 params->n_pipe_profiles == 0 || 868 params->n_max_pipe_profiles == 0 || 869 params->n_pipe_profiles > params->n_max_pipe_profiles) { 870 SCHED_LOG(ERR, 871 "%s: Incorrect value for pipe profiles", __func__); 872 return -EINVAL; 873 } 874 875 for (i = 0; i < params->n_pipe_profiles; i++) { 876 struct rte_sched_pipe_params *p = params->pipe_profiles + i; 877 int status; 878 879 status = pipe_profile_check(p, rate, ¶ms->qsize[0]); 880 if (status != 0) { 881 SCHED_LOG(ERR, 882 "%s: Pipe profile check failed(%d)", __func__, status); 883 return -EINVAL; 884 } 885 } 886 887 return 0; 888 } 889 890 uint32_t 891 rte_sched_port_get_memory_footprint(struct rte_sched_port_params *port_params, 892 struct rte_sched_subport_params **subport_params) 893 { 894 uint32_t size0 = 0, size1 = 0, i; 895 int status; 896 897 status = rte_sched_port_check_params(port_params); 898 if (status != 0) { 899 SCHED_LOG(ERR, 900 "%s: Port scheduler port params check failed (%d)", 901 __func__, status); 902 903 return 0; 904 } 905 906 for (i = 0; i < port_params->n_subports_per_port; i++) { 907 struct rte_sched_subport_params *sp = subport_params[i]; 908 909 status = rte_sched_subport_check_params(sp, 910 port_params->n_pipes_per_subport, 911 port_params->rate); 912 if (status != 0) { 913 SCHED_LOG(ERR, 914 "%s: Port scheduler subport params check failed (%d)", 915 __func__, status); 916 917 return 0; 918 } 919 } 920 921 size0 = sizeof(struct rte_sched_port); 922 923 for (i = 0; i < port_params->n_subports_per_port; i++) { 924 struct rte_sched_subport_params *sp = subport_params[i]; 925 926 size1 += rte_sched_subport_get_array_base(sp, 927 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL); 928 } 929 930 return size0 + size1; 931 } 932 933 struct rte_sched_port * 934 rte_sched_port_config(struct rte_sched_port_params *params) 935 { 936 struct rte_sched_port *port = NULL; 937 uint32_t size0, size1, size2; 938 uint32_t cycles_per_byte; 939 uint32_t i, j; 940 int status; 941 942 status = rte_sched_port_check_params(params); 943 if (status != 0) { 944 SCHED_LOG(ERR, 945 "%s: Port scheduler params check failed (%d)", 946 __func__, status); 947 return NULL; 948 } 949 950 size0 = sizeof(struct rte_sched_port); 951 size1 = params->n_subports_per_port * sizeof(struct rte_sched_subport *); 952 size2 = params->n_max_subport_profiles * 953 sizeof(struct rte_sched_subport_profile); 954 955 /* Allocate memory to store the data structures */ 956 port = rte_zmalloc_socket("qos_params", size0 + size1, 957 RTE_CACHE_LINE_SIZE, params->socket); 958 if (port == NULL) { 959 SCHED_LOG(ERR, "%s: Memory allocation fails", __func__); 960 961 return NULL; 962 } 963 964 /* Allocate memory to store the subport profile */ 965 port->subport_profiles = rte_zmalloc_socket("subport_profile", size2, 966 RTE_CACHE_LINE_SIZE, params->socket); 967 if (port->subport_profiles == NULL) { 968 SCHED_LOG(ERR, "%s: Memory allocation fails", __func__); 969 rte_free(port); 970 return NULL; 971 } 972 973 /* User parameters */ 974 port->n_subports_per_port = params->n_subports_per_port; 975 port->n_subport_profiles = params->n_subport_profiles; 976 port->n_max_subport_profiles = params->n_max_subport_profiles; 977 port->n_pipes_per_subport = params->n_pipes_per_subport; 978 port->n_pipes_per_subport_log2 = 979 rte_ctz32(params->n_pipes_per_subport); 980 port->socket = params->socket; 981 982 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 983 port->pipe_queue[i] = i; 984 985 for (i = 0, j = 0; i < RTE_SCHED_QUEUES_PER_PIPE; i++) { 986 port->pipe_tc[i] = j; 987 988 if (j < RTE_SCHED_TRAFFIC_CLASS_BE) 989 j++; 990 } 991 992 for (i = 0, j = 0; i < RTE_SCHED_QUEUES_PER_PIPE; i++) { 993 port->tc_queue[i] = j; 994 995 if (i >= RTE_SCHED_TRAFFIC_CLASS_BE) 996 j++; 997 } 998 port->rate = params->rate; 999 port->mtu = params->mtu + params->frame_overhead; 1000 port->frame_overhead = params->frame_overhead; 1001 1002 /* Timing */ 1003 port->time_cpu_cycles = rte_get_tsc_cycles(); 1004 port->time_cpu_bytes = 0; 1005 port->time = 0; 1006 1007 /* Subport profile table */ 1008 rte_sched_port_config_subport_profile_table(port, params, port->rate); 1009 1010 cycles_per_byte = (rte_get_tsc_hz() << RTE_SCHED_TIME_SHIFT) 1011 / params->rate; 1012 port->inv_cycles_per_byte = rte_reciprocal_value(cycles_per_byte); 1013 port->cycles_per_byte = cycles_per_byte; 1014 1015 /* Grinders */ 1016 port->pkts_out = NULL; 1017 port->n_pkts_out = 0; 1018 port->subport_id = 0; 1019 1020 return port; 1021 } 1022 1023 static inline void 1024 rte_sched_subport_free(struct rte_sched_port *port, 1025 struct rte_sched_subport *subport) 1026 { 1027 uint32_t n_subport_pipe_queues; 1028 uint32_t qindex; 1029 1030 if (subport == NULL) 1031 return; 1032 1033 n_subport_pipe_queues = rte_sched_subport_pipe_queues(subport); 1034 1035 /* Free enqueued mbufs */ 1036 for (qindex = 0; qindex < n_subport_pipe_queues; qindex++) { 1037 struct rte_mbuf **mbufs = 1038 rte_sched_subport_pipe_qbase(subport, qindex); 1039 uint16_t qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 1040 if (qsize != 0) { 1041 struct rte_sched_queue *queue = subport->queue + qindex; 1042 uint16_t qr = queue->qr & (qsize - 1); 1043 uint16_t qw = queue->qw & (qsize - 1); 1044 1045 for (; qr != qw; qr = (qr + 1) & (qsize - 1)) 1046 rte_pktmbuf_free(mbufs[qr]); 1047 } 1048 } 1049 1050 rte_free(subport); 1051 } 1052 1053 void 1054 rte_sched_port_free(struct rte_sched_port *port) 1055 { 1056 uint32_t i; 1057 1058 /* Check user parameters */ 1059 if (port == NULL) 1060 return; 1061 1062 for (i = 0; i < port->n_subports_per_port; i++) 1063 rte_sched_subport_free(port, port->subports[i]); 1064 1065 rte_free(port->subport_profiles); 1066 rte_free(port); 1067 } 1068 1069 static void 1070 rte_sched_free_memory(struct rte_sched_port *port, uint32_t n_subports) 1071 { 1072 uint32_t i; 1073 1074 for (i = 0; i < n_subports; i++) { 1075 struct rte_sched_subport *subport = port->subports[i]; 1076 1077 rte_sched_subport_free(port, subport); 1078 } 1079 1080 rte_free(port->subport_profiles); 1081 rte_free(port); 1082 } 1083 1084 static int 1085 rte_sched_red_config(struct rte_sched_port *port, 1086 struct rte_sched_subport *s, 1087 struct rte_sched_subport_params *params, 1088 uint32_t n_subports) 1089 { 1090 uint32_t i; 1091 1092 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 1093 1094 uint32_t j; 1095 1096 for (j = 0; j < RTE_COLORS; j++) { 1097 /* if min/max are both zero, then RED is disabled */ 1098 if ((params->cman_params->red_params[i][j].min_th | 1099 params->cman_params->red_params[i][j].max_th) == 0) { 1100 continue; 1101 } 1102 1103 if (rte_red_config_init(&s->red_config[i][j], 1104 params->cman_params->red_params[i][j].wq_log2, 1105 params->cman_params->red_params[i][j].min_th, 1106 params->cman_params->red_params[i][j].max_th, 1107 params->cman_params->red_params[i][j].maxp_inv) != 0) { 1108 rte_sched_free_memory(port, n_subports); 1109 1110 SCHED_LOG(NOTICE, 1111 "%s: RED configuration init fails", __func__); 1112 return -EINVAL; 1113 } 1114 } 1115 } 1116 s->cman = RTE_SCHED_CMAN_RED; 1117 return 0; 1118 } 1119 1120 static int 1121 rte_sched_pie_config(struct rte_sched_port *port, 1122 struct rte_sched_subport *s, 1123 struct rte_sched_subport_params *params, 1124 uint32_t n_subports) 1125 { 1126 uint32_t i; 1127 1128 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) { 1129 if (params->cman_params->pie_params[i].tailq_th > params->qsize[i]) { 1130 SCHED_LOG(NOTICE, 1131 "%s: PIE tailq threshold incorrect", __func__); 1132 return -EINVAL; 1133 } 1134 1135 if (rte_pie_config_init(&s->pie_config[i], 1136 params->cman_params->pie_params[i].qdelay_ref, 1137 params->cman_params->pie_params[i].dp_update_interval, 1138 params->cman_params->pie_params[i].max_burst, 1139 params->cman_params->pie_params[i].tailq_th) != 0) { 1140 rte_sched_free_memory(port, n_subports); 1141 1142 SCHED_LOG(NOTICE, 1143 "%s: PIE configuration init fails", __func__); 1144 return -EINVAL; 1145 } 1146 } 1147 s->cman = RTE_SCHED_CMAN_PIE; 1148 return 0; 1149 } 1150 1151 static int 1152 rte_sched_cman_config(struct rte_sched_port *port, 1153 struct rte_sched_subport *s, 1154 struct rte_sched_subport_params *params, 1155 uint32_t n_subports) 1156 { 1157 if (params->cman_params->cman_mode == RTE_SCHED_CMAN_RED) 1158 return rte_sched_red_config(port, s, params, n_subports); 1159 1160 else if (params->cman_params->cman_mode == RTE_SCHED_CMAN_PIE) 1161 return rte_sched_pie_config(port, s, params, n_subports); 1162 1163 return -EINVAL; 1164 } 1165 1166 int 1167 rte_sched_subport_tc_ov_config(struct rte_sched_port *port, 1168 uint32_t subport_id, 1169 bool tc_ov_enable) 1170 { 1171 struct rte_sched_subport *s; 1172 1173 if (port == NULL) { 1174 SCHED_LOG(ERR, 1175 "%s: Incorrect value for parameter port", __func__); 1176 return -EINVAL; 1177 } 1178 1179 if (subport_id >= port->n_subports_per_port) { 1180 SCHED_LOG(ERR, 1181 "%s: Incorrect value for parameter subport id", __func__); 1182 return -EINVAL; 1183 } 1184 1185 s = port->subports[subport_id]; 1186 s->tc_ov_enabled = tc_ov_enable ? 1 : 0; 1187 1188 return 0; 1189 } 1190 1191 int 1192 rte_sched_subport_config(struct rte_sched_port *port, 1193 uint32_t subport_id, 1194 struct rte_sched_subport_params *params, 1195 uint32_t subport_profile_id) 1196 { 1197 struct rte_sched_subport *s = NULL; 1198 uint32_t n_subports = subport_id; 1199 struct rte_sched_subport_profile *profile; 1200 uint32_t n_subport_pipe_queues, i; 1201 uint32_t size0, size1, bmp_mem_size; 1202 int status; 1203 int ret; 1204 1205 /* Check user parameters */ 1206 if (port == NULL) { 1207 SCHED_LOG(ERR, 1208 "%s: Incorrect value for parameter port", __func__); 1209 return 0; 1210 } 1211 1212 if (subport_id >= port->n_subports_per_port) { 1213 SCHED_LOG(ERR, 1214 "%s: Incorrect value for subport id", __func__); 1215 ret = -EINVAL; 1216 goto out; 1217 } 1218 1219 if (subport_profile_id >= port->n_max_subport_profiles) { 1220 SCHED_LOG(ERR, "%s: " 1221 "Number of subport profile exceeds the max limit", 1222 __func__); 1223 ret = -EINVAL; 1224 goto out; 1225 } 1226 1227 /** Memory is allocated only on first invocation of the api for a 1228 * given subport. Subsequent invocation on same subport will just 1229 * update subport bandwidth parameter. 1230 */ 1231 if (port->subports[subport_id] == NULL) { 1232 1233 status = rte_sched_subport_check_params(params, 1234 port->n_pipes_per_subport, 1235 port->rate); 1236 if (status != 0) { 1237 SCHED_LOG(NOTICE, 1238 "%s: Port scheduler params check failed (%d)", 1239 __func__, status); 1240 ret = -EINVAL; 1241 goto out; 1242 } 1243 1244 /* Determine the amount of memory to allocate */ 1245 size0 = sizeof(struct rte_sched_subport); 1246 size1 = rte_sched_subport_get_array_base(params, 1247 e_RTE_SCHED_SUBPORT_ARRAY_TOTAL); 1248 1249 /* Allocate memory to store the data structures */ 1250 s = rte_zmalloc_socket("subport_params", size0 + size1, 1251 RTE_CACHE_LINE_SIZE, port->socket); 1252 if (s == NULL) { 1253 SCHED_LOG(ERR, 1254 "%s: Memory allocation fails", __func__); 1255 ret = -ENOMEM; 1256 goto out; 1257 } 1258 1259 n_subports++; 1260 1261 /* Port */ 1262 port->subports[subport_id] = s; 1263 1264 s->tb_time = port->time; 1265 1266 /* compile time checks */ 1267 RTE_BUILD_BUG_ON(RTE_SCHED_PORT_N_GRINDERS == 0); 1268 RTE_BUILD_BUG_ON(RTE_SCHED_PORT_N_GRINDERS & 1269 (RTE_SCHED_PORT_N_GRINDERS - 1)); 1270 1271 /* User parameters */ 1272 s->n_pipes_per_subport_enabled = 1273 params->n_pipes_per_subport_enabled; 1274 memcpy(s->qsize, params->qsize, sizeof(params->qsize)); 1275 s->n_pipe_profiles = params->n_pipe_profiles; 1276 s->n_max_pipe_profiles = params->n_max_pipe_profiles; 1277 1278 /* TC oversubscription is enabled by default */ 1279 s->tc_ov_enabled = 1; 1280 1281 if (params->cman_params != NULL) { 1282 s->cman_enabled = true; 1283 status = rte_sched_cman_config(port, s, params, n_subports); 1284 if (status) { 1285 SCHED_LOG(NOTICE, 1286 "%s: CMAN configuration fails", __func__); 1287 return status; 1288 } 1289 } else { 1290 s->cman_enabled = false; 1291 } 1292 1293 /* Scheduling loop detection */ 1294 s->pipe_loop = RTE_SCHED_PIPE_INVALID; 1295 s->pipe_exhaustion = 0; 1296 1297 /* Grinders */ 1298 s->busy_grinders = 0; 1299 1300 /* Queue base calculation */ 1301 rte_sched_subport_config_qsize(s); 1302 1303 /* Large data structures */ 1304 s->pipe = (struct rte_sched_pipe *) 1305 (s->memory + rte_sched_subport_get_array_base(params, 1306 e_RTE_SCHED_SUBPORT_ARRAY_PIPE)); 1307 s->queue = (struct rte_sched_queue *) 1308 (s->memory + rte_sched_subport_get_array_base(params, 1309 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE)); 1310 s->queue_extra = (struct rte_sched_queue_extra *) 1311 (s->memory + rte_sched_subport_get_array_base(params, 1312 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_EXTRA)); 1313 s->pipe_profiles = (struct rte_sched_pipe_profile *) 1314 (s->memory + rte_sched_subport_get_array_base(params, 1315 e_RTE_SCHED_SUBPORT_ARRAY_PIPE_PROFILES)); 1316 s->bmp_array = s->memory + rte_sched_subport_get_array_base( 1317 params, e_RTE_SCHED_SUBPORT_ARRAY_BMP_ARRAY); 1318 s->queue_array = (struct rte_mbuf **) 1319 (s->memory + rte_sched_subport_get_array_base(params, 1320 e_RTE_SCHED_SUBPORT_ARRAY_QUEUE_ARRAY)); 1321 1322 /* Pipe profile table */ 1323 rte_sched_subport_config_pipe_profile_table(s, params, 1324 port->rate); 1325 1326 /* Bitmap */ 1327 n_subport_pipe_queues = rte_sched_subport_pipe_queues(s); 1328 bmp_mem_size = rte_bitmap_get_memory_footprint( 1329 n_subport_pipe_queues); 1330 s->bmp = rte_bitmap_init(n_subport_pipe_queues, s->bmp_array, 1331 bmp_mem_size); 1332 if (s->bmp == NULL) { 1333 SCHED_LOG(ERR, 1334 "%s: Subport bitmap init error", __func__); 1335 ret = -EINVAL; 1336 goto out; 1337 } 1338 1339 for (i = 0; i < RTE_SCHED_PORT_N_GRINDERS; i++) 1340 s->grinder_base_bmp_pos[i] = RTE_SCHED_PIPE_INVALID; 1341 1342 /* TC oversubscription */ 1343 s->tc_ov_wm_min = port->mtu; 1344 s->tc_ov_period_id = 0; 1345 s->tc_ov = 0; 1346 s->tc_ov_n = 0; 1347 s->tc_ov_rate = 0; 1348 } 1349 1350 { 1351 /* update subport parameters from subport profile table*/ 1352 profile = port->subport_profiles + subport_profile_id; 1353 1354 s = port->subports[subport_id]; 1355 1356 s->tb_credits = profile->tb_size / 2; 1357 1358 s->tc_time = port->time + profile->tc_period; 1359 1360 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 1361 if (s->qsize[i]) 1362 s->tc_credits[i] = 1363 profile->tc_credits_per_period[i]; 1364 else 1365 profile->tc_credits_per_period[i] = 0; 1366 1367 s->tc_ov_wm_max = rte_sched_time_ms_to_bytes(profile->tc_period, 1368 s->pipe_tc_be_rate_max); 1369 s->tc_ov_wm = s->tc_ov_wm_max; 1370 s->profile = subport_profile_id; 1371 1372 } 1373 1374 rte_sched_port_log_subport_profile(port, subport_profile_id); 1375 1376 return 0; 1377 1378 out: 1379 rte_sched_free_memory(port, n_subports); 1380 1381 return ret; 1382 } 1383 1384 int 1385 rte_sched_pipe_config(struct rte_sched_port *port, 1386 uint32_t subport_id, 1387 uint32_t pipe_id, 1388 int32_t pipe_profile) 1389 { 1390 struct rte_sched_subport *s; 1391 struct rte_sched_subport_profile *sp; 1392 struct rte_sched_pipe *p; 1393 struct rte_sched_pipe_profile *params; 1394 uint32_t n_subports = subport_id + 1; 1395 uint32_t deactivate, profile, i; 1396 int ret; 1397 1398 /* Check user parameters */ 1399 profile = (uint32_t) pipe_profile; 1400 deactivate = (pipe_profile < 0); 1401 1402 if (port == NULL) { 1403 SCHED_LOG(ERR, 1404 "%s: Incorrect value for parameter port", __func__); 1405 return -EINVAL; 1406 } 1407 1408 if (subport_id >= port->n_subports_per_port) { 1409 SCHED_LOG(ERR, 1410 "%s: Incorrect value for parameter subport id", __func__); 1411 ret = -EINVAL; 1412 goto out; 1413 } 1414 1415 s = port->subports[subport_id]; 1416 if (pipe_id >= s->n_pipes_per_subport_enabled) { 1417 SCHED_LOG(ERR, 1418 "%s: Incorrect value for parameter pipe id", __func__); 1419 ret = -EINVAL; 1420 goto out; 1421 } 1422 1423 if (!deactivate && profile >= s->n_pipe_profiles) { 1424 SCHED_LOG(ERR, 1425 "%s: Incorrect value for parameter pipe profile", __func__); 1426 ret = -EINVAL; 1427 goto out; 1428 } 1429 1430 sp = port->subport_profiles + s->profile; 1431 /* Handle the case when pipe already has a valid configuration */ 1432 p = s->pipe + pipe_id; 1433 if (p->tb_time) { 1434 params = s->pipe_profiles + p->profile; 1435 1436 double subport_tc_be_rate = 1437 (double)sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1438 / (double) sp->tc_period; 1439 double pipe_tc_be_rate = 1440 (double) params->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1441 / (double) params->tc_period; 1442 uint32_t tc_be_ov = s->tc_ov; 1443 1444 /* Unplug pipe from its subport */ 1445 s->tc_ov_n -= params->tc_ov_weight; 1446 s->tc_ov_rate -= pipe_tc_be_rate; 1447 s->tc_ov = s->tc_ov_rate > subport_tc_be_rate; 1448 1449 if (s->tc_ov != tc_be_ov) { 1450 SCHED_LOG(DEBUG, 1451 "Subport %u Best-effort TC oversubscription is OFF (%.4lf >= %.4lf)", 1452 subport_id, subport_tc_be_rate, s->tc_ov_rate); 1453 } 1454 1455 /* Reset the pipe */ 1456 memset(p, 0, sizeof(struct rte_sched_pipe)); 1457 } 1458 1459 if (deactivate) 1460 return 0; 1461 1462 /* Apply the new pipe configuration */ 1463 p->profile = profile; 1464 params = s->pipe_profiles + p->profile; 1465 1466 /* Token Bucket (TB) */ 1467 p->tb_time = port->time; 1468 p->tb_credits = params->tb_size / 2; 1469 1470 /* Traffic Classes (TCs) */ 1471 p->tc_time = port->time + params->tc_period; 1472 1473 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 1474 if (s->qsize[i]) 1475 p->tc_credits[i] = params->tc_credits_per_period[i]; 1476 1477 { 1478 /* Subport best effort tc oversubscription */ 1479 double subport_tc_be_rate = 1480 (double)sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1481 / (double) sp->tc_period; 1482 double pipe_tc_be_rate = 1483 (double) params->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] 1484 / (double) params->tc_period; 1485 uint32_t tc_be_ov = s->tc_ov; 1486 1487 s->tc_ov_n += params->tc_ov_weight; 1488 s->tc_ov_rate += pipe_tc_be_rate; 1489 s->tc_ov = s->tc_ov_rate > subport_tc_be_rate; 1490 1491 if (s->tc_ov != tc_be_ov) { 1492 SCHED_LOG(DEBUG, 1493 "Subport %u Best effort TC oversubscription is ON (%.4lf < %.4lf)", 1494 subport_id, subport_tc_be_rate, s->tc_ov_rate); 1495 } 1496 p->tc_ov_period_id = s->tc_ov_period_id; 1497 p->tc_ov_credits = s->tc_ov_wm; 1498 } 1499 1500 return 0; 1501 1502 out: 1503 rte_sched_free_memory(port, n_subports); 1504 1505 return ret; 1506 } 1507 1508 int 1509 rte_sched_subport_pipe_profile_add(struct rte_sched_port *port, 1510 uint32_t subport_id, 1511 struct rte_sched_pipe_params *params, 1512 uint32_t *pipe_profile_id) 1513 { 1514 struct rte_sched_subport *s; 1515 struct rte_sched_pipe_profile *pp; 1516 uint32_t i; 1517 int status; 1518 1519 /* Port */ 1520 if (port == NULL) { 1521 SCHED_LOG(ERR, 1522 "%s: Incorrect value for parameter port", __func__); 1523 return -EINVAL; 1524 } 1525 1526 /* Subport id not exceeds the max limit */ 1527 if (subport_id > port->n_subports_per_port) { 1528 SCHED_LOG(ERR, 1529 "%s: Incorrect value for subport id", __func__); 1530 return -EINVAL; 1531 } 1532 1533 s = port->subports[subport_id]; 1534 1535 /* Pipe profiles exceeds the max limit */ 1536 if (s->n_pipe_profiles >= s->n_max_pipe_profiles) { 1537 SCHED_LOG(ERR, 1538 "%s: Number of pipe profiles exceeds the max limit", __func__); 1539 return -EINVAL; 1540 } 1541 1542 /* Pipe params */ 1543 status = pipe_profile_check(params, port->rate, &s->qsize[0]); 1544 if (status != 0) { 1545 SCHED_LOG(ERR, 1546 "%s: Pipe profile check failed(%d)", __func__, status); 1547 return -EINVAL; 1548 } 1549 1550 pp = &s->pipe_profiles[s->n_pipe_profiles]; 1551 rte_sched_pipe_profile_convert(s, params, pp, port->rate); 1552 1553 /* Pipe profile should not exists */ 1554 for (i = 0; i < s->n_pipe_profiles; i++) 1555 if (memcmp(s->pipe_profiles + i, pp, sizeof(*pp)) == 0) { 1556 SCHED_LOG(ERR, 1557 "%s: Pipe profile exists", __func__); 1558 return -EINVAL; 1559 } 1560 1561 /* Pipe profile commit */ 1562 *pipe_profile_id = s->n_pipe_profiles; 1563 s->n_pipe_profiles++; 1564 1565 if (s->pipe_tc_be_rate_max < params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]) 1566 s->pipe_tc_be_rate_max = params->tc_rate[RTE_SCHED_TRAFFIC_CLASS_BE]; 1567 1568 rte_sched_port_log_pipe_profile(s, *pipe_profile_id); 1569 1570 return 0; 1571 } 1572 1573 int 1574 rte_sched_port_subport_profile_add(struct rte_sched_port *port, 1575 struct rte_sched_subport_profile_params *params, 1576 uint32_t *subport_profile_id) 1577 { 1578 int status; 1579 uint32_t i; 1580 struct rte_sched_subport_profile *dst; 1581 1582 /* Port */ 1583 if (port == NULL) { 1584 SCHED_LOG(ERR, "%s: " 1585 "Incorrect value for parameter port", __func__); 1586 return -EINVAL; 1587 } 1588 1589 if (params == NULL) { 1590 SCHED_LOG(ERR, "%s: " 1591 "Incorrect value for parameter profile", __func__); 1592 return -EINVAL; 1593 } 1594 1595 if (subport_profile_id == NULL) { 1596 SCHED_LOG(ERR, "%s: " 1597 "Incorrect value for parameter subport_profile_id", 1598 __func__); 1599 return -EINVAL; 1600 } 1601 1602 dst = port->subport_profiles + port->n_subport_profiles; 1603 1604 /* Subport profiles exceeds the max limit */ 1605 if (port->n_subport_profiles >= port->n_max_subport_profiles) { 1606 SCHED_LOG(ERR, "%s: " 1607 "Number of subport profiles exceeds the max limit", 1608 __func__); 1609 return -EINVAL; 1610 } 1611 1612 status = subport_profile_check(params, port->rate); 1613 if (status != 0) { 1614 SCHED_LOG(ERR, 1615 "%s: subport profile check failed(%d)", __func__, status); 1616 return -EINVAL; 1617 } 1618 1619 rte_sched_subport_profile_convert(params, dst, port->rate); 1620 1621 /* Subport profile should not exists */ 1622 for (i = 0; i < port->n_subport_profiles; i++) 1623 if (memcmp(port->subport_profiles + i, 1624 dst, sizeof(*dst)) == 0) { 1625 SCHED_LOG(ERR, 1626 "%s: subport profile exists", __func__); 1627 return -EINVAL; 1628 } 1629 1630 /* Subport profile commit */ 1631 *subport_profile_id = port->n_subport_profiles; 1632 port->n_subport_profiles++; 1633 1634 rte_sched_port_log_subport_profile(port, *subport_profile_id); 1635 1636 return 0; 1637 } 1638 1639 static inline uint32_t 1640 rte_sched_port_qindex(struct rte_sched_port *port, 1641 uint32_t subport, 1642 uint32_t pipe, 1643 uint32_t traffic_class, 1644 uint32_t queue) 1645 { 1646 return ((subport & (port->n_subports_per_port - 1)) << 1647 (port->n_pipes_per_subport_log2 + 4)) | 1648 ((pipe & 1649 (port->subports[subport]->n_pipes_per_subport_enabled - 1)) << 4) | 1650 ((rte_sched_port_pipe_queue(port, traffic_class) + queue) & 1651 (RTE_SCHED_QUEUES_PER_PIPE - 1)); 1652 } 1653 1654 void 1655 rte_sched_port_pkt_write(struct rte_sched_port *port, 1656 struct rte_mbuf *pkt, 1657 uint32_t subport, uint32_t pipe, 1658 uint32_t traffic_class, 1659 uint32_t queue, enum rte_color color) 1660 { 1661 uint32_t queue_id = 1662 rte_sched_port_qindex(port, subport, pipe, traffic_class, queue); 1663 1664 rte_mbuf_sched_set(pkt, queue_id, traffic_class, (uint8_t)color); 1665 } 1666 1667 void 1668 rte_sched_port_pkt_read_tree_path(struct rte_sched_port *port, 1669 const struct rte_mbuf *pkt, 1670 uint32_t *subport, uint32_t *pipe, 1671 uint32_t *traffic_class, uint32_t *queue) 1672 { 1673 uint32_t queue_id = rte_mbuf_sched_queue_get(pkt); 1674 1675 *subport = queue_id >> (port->n_pipes_per_subport_log2 + 4); 1676 *pipe = (queue_id >> 4) & 1677 (port->subports[*subport]->n_pipes_per_subport_enabled - 1); 1678 *traffic_class = rte_sched_port_pipe_tc(port, queue_id); 1679 *queue = rte_sched_port_tc_queue(port, queue_id); 1680 } 1681 1682 enum rte_color 1683 rte_sched_port_pkt_read_color(const struct rte_mbuf *pkt) 1684 { 1685 return (enum rte_color)rte_mbuf_sched_color_get(pkt); 1686 } 1687 1688 int 1689 rte_sched_subport_read_stats(struct rte_sched_port *port, 1690 uint32_t subport_id, 1691 struct rte_sched_subport_stats *stats, 1692 uint32_t *tc_ov) 1693 { 1694 struct rte_sched_subport *s; 1695 1696 /* Check user parameters */ 1697 if (port == NULL) { 1698 SCHED_LOG(ERR, 1699 "%s: Incorrect value for parameter port", __func__); 1700 return -EINVAL; 1701 } 1702 1703 if (subport_id >= port->n_subports_per_port) { 1704 SCHED_LOG(ERR, 1705 "%s: Incorrect value for subport id", __func__); 1706 return -EINVAL; 1707 } 1708 1709 if (stats == NULL) { 1710 SCHED_LOG(ERR, 1711 "%s: Incorrect value for parameter stats", __func__); 1712 return -EINVAL; 1713 } 1714 1715 if (tc_ov == NULL) { 1716 SCHED_LOG(ERR, 1717 "%s: Incorrect value for tc_ov", __func__); 1718 return -EINVAL; 1719 } 1720 1721 s = port->subports[subport_id]; 1722 1723 /* Copy subport stats and clear */ 1724 memcpy(stats, &s->stats, sizeof(struct rte_sched_subport_stats)); 1725 memset(&s->stats, 0, sizeof(struct rte_sched_subport_stats)); 1726 1727 /* Subport TC oversubscription status */ 1728 *tc_ov = s->tc_ov; 1729 1730 return 0; 1731 } 1732 1733 int 1734 rte_sched_queue_read_stats(struct rte_sched_port *port, 1735 uint32_t queue_id, 1736 struct rte_sched_queue_stats *stats, 1737 uint16_t *qlen) 1738 { 1739 struct rte_sched_subport *s; 1740 struct rte_sched_queue *q; 1741 struct rte_sched_queue_extra *qe; 1742 uint32_t subport_id, subport_qmask, subport_qindex; 1743 1744 /* Check user parameters */ 1745 if (port == NULL) { 1746 SCHED_LOG(ERR, 1747 "%s: Incorrect value for parameter port", __func__); 1748 return -EINVAL; 1749 } 1750 1751 if (queue_id >= rte_sched_port_queues_per_port(port)) { 1752 SCHED_LOG(ERR, 1753 "%s: Incorrect value for queue id", __func__); 1754 return -EINVAL; 1755 } 1756 1757 if (stats == NULL) { 1758 SCHED_LOG(ERR, 1759 "%s: Incorrect value for parameter stats", __func__); 1760 return -EINVAL; 1761 } 1762 1763 if (qlen == NULL) { 1764 SCHED_LOG(ERR, 1765 "%s: Incorrect value for parameter qlen", __func__); 1766 return -EINVAL; 1767 } 1768 subport_qmask = port->n_pipes_per_subport_log2 + 4; 1769 subport_id = (queue_id >> subport_qmask) & (port->n_subports_per_port - 1); 1770 1771 s = port->subports[subport_id]; 1772 subport_qindex = ((1 << subport_qmask) - 1) & queue_id; 1773 q = s->queue + subport_qindex; 1774 qe = s->queue_extra + subport_qindex; 1775 1776 /* Copy queue stats and clear */ 1777 memcpy(stats, &qe->stats, sizeof(struct rte_sched_queue_stats)); 1778 memset(&qe->stats, 0, sizeof(struct rte_sched_queue_stats)); 1779 1780 /* Queue length */ 1781 *qlen = q->qw - q->qr; 1782 1783 return 0; 1784 } 1785 1786 #ifdef RTE_SCHED_DEBUG 1787 1788 static inline int 1789 rte_sched_port_queue_is_empty(struct rte_sched_subport *subport, 1790 uint32_t qindex) 1791 { 1792 struct rte_sched_queue *queue = subport->queue + qindex; 1793 1794 return queue->qr == queue->qw; 1795 } 1796 1797 #endif /* RTE_SCHED_DEBUG */ 1798 1799 static inline void 1800 rte_sched_port_update_subport_stats(struct rte_sched_port *port, 1801 struct rte_sched_subport *subport, 1802 uint32_t qindex, 1803 struct rte_mbuf *pkt) 1804 { 1805 uint32_t tc_index = rte_sched_port_pipe_tc(port, qindex); 1806 uint32_t pkt_len = pkt->pkt_len; 1807 1808 subport->stats.n_pkts_tc[tc_index] += 1; 1809 subport->stats.n_bytes_tc[tc_index] += pkt_len; 1810 } 1811 1812 static inline void 1813 rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port, 1814 struct rte_sched_subport *subport, 1815 uint32_t qindex, 1816 struct rte_mbuf *pkt, 1817 uint32_t n_pkts_cman_dropped) 1818 { 1819 uint32_t tc_index = rte_sched_port_pipe_tc(port, qindex); 1820 uint32_t pkt_len = pkt->pkt_len; 1821 1822 subport->stats.n_pkts_tc_dropped[tc_index] += 1; 1823 subport->stats.n_bytes_tc_dropped[tc_index] += pkt_len; 1824 subport->stats.n_pkts_cman_dropped[tc_index] += n_pkts_cman_dropped; 1825 } 1826 1827 static inline void 1828 rte_sched_port_update_queue_stats(struct rte_sched_subport *subport, 1829 uint32_t qindex, 1830 struct rte_mbuf *pkt) 1831 { 1832 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1833 uint32_t pkt_len = pkt->pkt_len; 1834 1835 qe->stats.n_pkts += 1; 1836 qe->stats.n_bytes += pkt_len; 1837 } 1838 1839 static inline void 1840 rte_sched_port_update_queue_stats_on_drop(struct rte_sched_subport *subport, 1841 uint32_t qindex, 1842 struct rte_mbuf *pkt, 1843 uint32_t n_pkts_cman_dropped) 1844 { 1845 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1846 uint32_t pkt_len = pkt->pkt_len; 1847 1848 qe->stats.n_pkts_dropped += 1; 1849 qe->stats.n_bytes_dropped += pkt_len; 1850 if (subport->cman_enabled) 1851 qe->stats.n_pkts_cman_dropped += n_pkts_cman_dropped; 1852 } 1853 1854 static inline int 1855 rte_sched_port_cman_drop(struct rte_sched_port *port, 1856 struct rte_sched_subport *subport, 1857 struct rte_mbuf *pkt, 1858 uint32_t qindex, 1859 uint16_t qlen) 1860 { 1861 if (!subport->cman_enabled) 1862 return 0; 1863 1864 struct rte_sched_queue_extra *qe; 1865 uint32_t tc_index; 1866 1867 tc_index = rte_sched_port_pipe_tc(port, qindex); 1868 qe = subport->queue_extra + qindex; 1869 1870 /* RED */ 1871 if (subport->cman == RTE_SCHED_CMAN_RED) { 1872 struct rte_red_config *red_cfg; 1873 struct rte_red *red; 1874 enum rte_color color; 1875 1876 color = rte_sched_port_pkt_read_color(pkt); 1877 red_cfg = &subport->red_config[tc_index][color]; 1878 1879 if ((red_cfg->min_th | red_cfg->max_th) == 0) 1880 return 0; 1881 1882 red = &qe->red; 1883 1884 return rte_red_enqueue(red_cfg, red, qlen, port->time); 1885 } 1886 1887 /* PIE */ 1888 struct rte_pie_config *pie_cfg = &subport->pie_config[tc_index]; 1889 struct rte_pie *pie = &qe->pie; 1890 1891 return rte_pie_enqueue(pie_cfg, pie, qlen, pkt->pkt_len, port->time_cpu_cycles); 1892 } 1893 1894 static inline void 1895 rte_sched_port_red_set_queue_empty_timestamp(struct rte_sched_port *port, 1896 struct rte_sched_subport *subport, uint32_t qindex) 1897 { 1898 if (subport->cman_enabled && subport->cman == RTE_SCHED_CMAN_RED) { 1899 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1900 struct rte_red *red = &qe->red; 1901 1902 rte_red_mark_queue_empty(red, port->time); 1903 } 1904 } 1905 1906 static inline void 1907 rte_sched_port_pie_dequeue(struct rte_sched_subport *subport, 1908 uint32_t qindex, uint32_t pkt_len, uint64_t time) { 1909 if (subport->cman_enabled && subport->cman == RTE_SCHED_CMAN_PIE) { 1910 struct rte_sched_queue_extra *qe = subport->queue_extra + qindex; 1911 struct rte_pie *pie = &qe->pie; 1912 1913 /* Update queue length */ 1914 pie->qlen -= 1; 1915 pie->qlen_bytes -= pkt_len; 1916 1917 rte_pie_dequeue(pie, pkt_len, time); 1918 } 1919 } 1920 1921 #ifdef RTE_SCHED_DEBUG 1922 1923 static inline void 1924 debug_check_queue_slab(struct rte_sched_subport *subport, uint32_t bmp_pos, 1925 uint64_t bmp_slab) 1926 { 1927 uint64_t mask; 1928 uint32_t i, panic; 1929 1930 if (bmp_slab == 0) 1931 rte_panic("Empty slab at position %u\n", bmp_pos); 1932 1933 panic = 0; 1934 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) { 1935 if (mask & bmp_slab) { 1936 if (rte_sched_port_queue_is_empty(subport, bmp_pos + i)) { 1937 printf("Queue %u (slab offset %u) is empty\n", bmp_pos + i, i); 1938 panic = 1; 1939 } 1940 } 1941 } 1942 1943 if (panic) 1944 rte_panic("Empty queues in slab 0x%" PRIx64 "starting at position %u\n", 1945 bmp_slab, bmp_pos); 1946 } 1947 1948 #endif /* RTE_SCHED_DEBUG */ 1949 1950 static inline struct rte_sched_subport * 1951 rte_sched_port_subport(struct rte_sched_port *port, 1952 struct rte_mbuf *pkt) 1953 { 1954 uint32_t queue_id = rte_mbuf_sched_queue_get(pkt); 1955 uint32_t subport_id = queue_id >> (port->n_pipes_per_subport_log2 + 4); 1956 1957 return port->subports[subport_id]; 1958 } 1959 1960 static inline uint32_t 1961 rte_sched_port_enqueue_qptrs_prefetch0(struct rte_sched_subport *subport, 1962 struct rte_mbuf *pkt, uint32_t subport_qmask) 1963 { 1964 struct rte_sched_queue *q; 1965 struct rte_sched_queue_extra *qe; 1966 uint32_t qindex = rte_mbuf_sched_queue_get(pkt); 1967 uint32_t subport_queue_id = subport_qmask & qindex; 1968 1969 q = subport->queue + subport_queue_id; 1970 rte_prefetch0(q); 1971 qe = subport->queue_extra + subport_queue_id; 1972 rte_prefetch0(qe); 1973 1974 return subport_queue_id; 1975 } 1976 1977 static inline void 1978 rte_sched_port_enqueue_qwa_prefetch0(struct rte_sched_port *port, 1979 struct rte_sched_subport *subport, 1980 uint32_t qindex, 1981 struct rte_mbuf **qbase) 1982 { 1983 struct rte_sched_queue *q; 1984 struct rte_mbuf **q_qw; 1985 uint16_t qsize; 1986 1987 q = subport->queue + qindex; 1988 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 1989 q_qw = qbase + (q->qw & (qsize - 1)); 1990 1991 rte_prefetch0(q_qw); 1992 rte_bitmap_prefetch0(subport->bmp, qindex); 1993 } 1994 1995 static inline int 1996 rte_sched_port_enqueue_qwa(struct rte_sched_port *port, 1997 struct rte_sched_subport *subport, 1998 uint32_t qindex, 1999 struct rte_mbuf **qbase, 2000 struct rte_mbuf *pkt) 2001 { 2002 struct rte_sched_queue *q; 2003 uint16_t qsize; 2004 uint16_t qlen; 2005 2006 q = subport->queue + qindex; 2007 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 2008 qlen = q->qw - q->qr; 2009 2010 /* Drop the packet (and update drop stats) when queue is full */ 2011 if (unlikely(rte_sched_port_cman_drop(port, subport, pkt, qindex, qlen) || 2012 (qlen >= qsize))) { 2013 rte_pktmbuf_free(pkt); 2014 rte_sched_port_update_subport_stats_on_drop(port, subport, 2015 qindex, pkt, qlen < qsize); 2016 rte_sched_port_update_queue_stats_on_drop(subport, qindex, pkt, 2017 qlen < qsize); 2018 return 0; 2019 } 2020 2021 /* Enqueue packet */ 2022 qbase[q->qw & (qsize - 1)] = pkt; 2023 q->qw++; 2024 2025 /* Activate queue in the subport bitmap */ 2026 rte_bitmap_set(subport->bmp, qindex); 2027 2028 /* Statistics */ 2029 rte_sched_port_update_subport_stats(port, subport, qindex, pkt); 2030 rte_sched_port_update_queue_stats(subport, qindex, pkt); 2031 2032 return 1; 2033 } 2034 2035 2036 /* 2037 * The enqueue function implements a 4-level pipeline with each stage 2038 * processing two different packets. The purpose of using a pipeline 2039 * is to hide the latency of prefetching the data structures. The 2040 * naming convention is presented in the diagram below: 2041 * 2042 * p00 _______ p10 _______ p20 _______ p30 _______ 2043 * ----->| |----->| |----->| |----->| |-----> 2044 * | 0 | | 1 | | 2 | | 3 | 2045 * ----->|_______|----->|_______|----->|_______|----->|_______|-----> 2046 * p01 p11 p21 p31 2047 */ 2048 int 2049 rte_sched_port_enqueue(struct rte_sched_port *port, struct rte_mbuf **pkts, 2050 uint32_t n_pkts) 2051 { 2052 struct rte_mbuf *pkt00, *pkt01, *pkt10, *pkt11, *pkt20, *pkt21, 2053 *pkt30, *pkt31, *pkt_last; 2054 struct rte_mbuf **q00_base, **q01_base, **q10_base, **q11_base, 2055 **q20_base, **q21_base, **q30_base, **q31_base, **q_last_base; 2056 struct rte_sched_subport *subport00, *subport01, *subport10, *subport11, 2057 *subport20, *subport21, *subport30, *subport31, *subport_last; 2058 uint32_t q00, q01, q10, q11, q20, q21, q30, q31, q_last; 2059 uint32_t r00, r01, r10, r11, r20, r21, r30, r31, r_last; 2060 uint32_t subport_qmask; 2061 uint32_t result, i; 2062 2063 result = 0; 2064 subport_qmask = (1 << (port->n_pipes_per_subport_log2 + 4)) - 1; 2065 2066 /* 2067 * Less then 6 input packets available, which is not enough to 2068 * feed the pipeline 2069 */ 2070 if (unlikely(n_pkts < 6)) { 2071 struct rte_sched_subport *subports[5]; 2072 struct rte_mbuf **q_base[5]; 2073 uint32_t q[5]; 2074 2075 /* Prefetch the mbuf structure of each packet */ 2076 for (i = 0; i < n_pkts; i++) 2077 rte_prefetch0(pkts[i]); 2078 2079 /* Prefetch the subport structure for each packet */ 2080 for (i = 0; i < n_pkts; i++) 2081 subports[i] = rte_sched_port_subport(port, pkts[i]); 2082 2083 /* Prefetch the queue structure for each queue */ 2084 for (i = 0; i < n_pkts; i++) 2085 q[i] = rte_sched_port_enqueue_qptrs_prefetch0(subports[i], 2086 pkts[i], subport_qmask); 2087 2088 /* Prefetch the write pointer location of each queue */ 2089 for (i = 0; i < n_pkts; i++) { 2090 q_base[i] = rte_sched_subport_pipe_qbase(subports[i], q[i]); 2091 rte_sched_port_enqueue_qwa_prefetch0(port, subports[i], 2092 q[i], q_base[i]); 2093 } 2094 2095 /* Write each packet to its queue */ 2096 for (i = 0; i < n_pkts; i++) 2097 result += rte_sched_port_enqueue_qwa(port, subports[i], 2098 q[i], q_base[i], pkts[i]); 2099 2100 return result; 2101 } 2102 2103 /* Feed the first 3 stages of the pipeline (6 packets needed) */ 2104 pkt20 = pkts[0]; 2105 pkt21 = pkts[1]; 2106 rte_prefetch0(pkt20); 2107 rte_prefetch0(pkt21); 2108 2109 pkt10 = pkts[2]; 2110 pkt11 = pkts[3]; 2111 rte_prefetch0(pkt10); 2112 rte_prefetch0(pkt11); 2113 2114 subport20 = rte_sched_port_subport(port, pkt20); 2115 subport21 = rte_sched_port_subport(port, pkt21); 2116 q20 = rte_sched_port_enqueue_qptrs_prefetch0(subport20, 2117 pkt20, subport_qmask); 2118 q21 = rte_sched_port_enqueue_qptrs_prefetch0(subport21, 2119 pkt21, subport_qmask); 2120 2121 pkt00 = pkts[4]; 2122 pkt01 = pkts[5]; 2123 rte_prefetch0(pkt00); 2124 rte_prefetch0(pkt01); 2125 2126 subport10 = rte_sched_port_subport(port, pkt10); 2127 subport11 = rte_sched_port_subport(port, pkt11); 2128 q10 = rte_sched_port_enqueue_qptrs_prefetch0(subport10, 2129 pkt10, subport_qmask); 2130 q11 = rte_sched_port_enqueue_qptrs_prefetch0(subport11, 2131 pkt11, subport_qmask); 2132 2133 q20_base = rte_sched_subport_pipe_qbase(subport20, q20); 2134 q21_base = rte_sched_subport_pipe_qbase(subport21, q21); 2135 rte_sched_port_enqueue_qwa_prefetch0(port, subport20, q20, q20_base); 2136 rte_sched_port_enqueue_qwa_prefetch0(port, subport21, q21, q21_base); 2137 2138 /* Run the pipeline */ 2139 for (i = 6; i < (n_pkts & (~1)); i += 2) { 2140 /* Propagate stage inputs */ 2141 pkt30 = pkt20; 2142 pkt31 = pkt21; 2143 pkt20 = pkt10; 2144 pkt21 = pkt11; 2145 pkt10 = pkt00; 2146 pkt11 = pkt01; 2147 q30 = q20; 2148 q31 = q21; 2149 q20 = q10; 2150 q21 = q11; 2151 subport30 = subport20; 2152 subport31 = subport21; 2153 subport20 = subport10; 2154 subport21 = subport11; 2155 q30_base = q20_base; 2156 q31_base = q21_base; 2157 2158 /* Stage 0: Get packets in */ 2159 pkt00 = pkts[i]; 2160 pkt01 = pkts[i + 1]; 2161 rte_prefetch0(pkt00); 2162 rte_prefetch0(pkt01); 2163 2164 /* Stage 1: Prefetch subport and queue structure storing queue pointers */ 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 /* Stage 2: Prefetch queue write location */ 2173 q20_base = rte_sched_subport_pipe_qbase(subport20, q20); 2174 q21_base = rte_sched_subport_pipe_qbase(subport21, q21); 2175 rte_sched_port_enqueue_qwa_prefetch0(port, subport20, q20, q20_base); 2176 rte_sched_port_enqueue_qwa_prefetch0(port, subport21, q21, q21_base); 2177 2178 /* Stage 3: Write packet to queue and activate queue */ 2179 r30 = rte_sched_port_enqueue_qwa(port, subport30, 2180 q30, q30_base, pkt30); 2181 r31 = rte_sched_port_enqueue_qwa(port, subport31, 2182 q31, q31_base, pkt31); 2183 result += r30 + r31; 2184 } 2185 2186 /* 2187 * Drain the pipeline (exactly 6 packets). 2188 * Handle the last packet in the case 2189 * of an odd number of input packets. 2190 */ 2191 pkt_last = pkts[n_pkts - 1]; 2192 rte_prefetch0(pkt_last); 2193 2194 subport00 = rte_sched_port_subport(port, pkt00); 2195 subport01 = rte_sched_port_subport(port, pkt01); 2196 q00 = rte_sched_port_enqueue_qptrs_prefetch0(subport00, 2197 pkt00, subport_qmask); 2198 q01 = rte_sched_port_enqueue_qptrs_prefetch0(subport01, 2199 pkt01, subport_qmask); 2200 2201 q10_base = rte_sched_subport_pipe_qbase(subport10, q10); 2202 q11_base = rte_sched_subport_pipe_qbase(subport11, q11); 2203 rte_sched_port_enqueue_qwa_prefetch0(port, subport10, q10, q10_base); 2204 rte_sched_port_enqueue_qwa_prefetch0(port, subport11, q11, q11_base); 2205 2206 r20 = rte_sched_port_enqueue_qwa(port, subport20, 2207 q20, q20_base, pkt20); 2208 r21 = rte_sched_port_enqueue_qwa(port, subport21, 2209 q21, q21_base, pkt21); 2210 result += r20 + r21; 2211 2212 subport_last = rte_sched_port_subport(port, pkt_last); 2213 q_last = rte_sched_port_enqueue_qptrs_prefetch0(subport_last, 2214 pkt_last, subport_qmask); 2215 2216 q00_base = rte_sched_subport_pipe_qbase(subport00, q00); 2217 q01_base = rte_sched_subport_pipe_qbase(subport01, q01); 2218 rte_sched_port_enqueue_qwa_prefetch0(port, subport00, q00, q00_base); 2219 rte_sched_port_enqueue_qwa_prefetch0(port, subport01, q01, q01_base); 2220 2221 r10 = rte_sched_port_enqueue_qwa(port, subport10, q10, 2222 q10_base, pkt10); 2223 r11 = rte_sched_port_enqueue_qwa(port, subport11, q11, 2224 q11_base, pkt11); 2225 result += r10 + r11; 2226 2227 q_last_base = rte_sched_subport_pipe_qbase(subport_last, q_last); 2228 rte_sched_port_enqueue_qwa_prefetch0(port, subport_last, 2229 q_last, q_last_base); 2230 2231 r00 = rte_sched_port_enqueue_qwa(port, subport00, q00, 2232 q00_base, pkt00); 2233 r01 = rte_sched_port_enqueue_qwa(port, subport01, q01, 2234 q01_base, pkt01); 2235 result += r00 + r01; 2236 2237 if (n_pkts & 1) { 2238 r_last = rte_sched_port_enqueue_qwa(port, subport_last, 2239 q_last, q_last_base, pkt_last); 2240 result += r_last; 2241 } 2242 2243 return result; 2244 } 2245 2246 static inline uint64_t 2247 grinder_tc_ov_credits_update(struct rte_sched_port *port, 2248 struct rte_sched_subport *subport, uint32_t pos) 2249 { 2250 struct rte_sched_grinder *grinder = subport->grinder + pos; 2251 struct rte_sched_subport_profile *sp = grinder->subport_params; 2252 uint64_t tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 2253 uint64_t tc_consumption = 0, tc_ov_consumption_max; 2254 uint64_t tc_ov_wm = subport->tc_ov_wm; 2255 uint32_t i; 2256 2257 if (subport->tc_ov == 0) 2258 return subport->tc_ov_wm_max; 2259 2260 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASS_BE; i++) { 2261 tc_ov_consumption[i] = sp->tc_credits_per_period[i] 2262 - subport->tc_credits[i]; 2263 tc_consumption += tc_ov_consumption[i]; 2264 } 2265 2266 tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASS_BE] = 2267 sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] - 2268 subport->tc_credits[RTE_SCHED_TRAFFIC_CLASS_BE]; 2269 2270 tc_ov_consumption_max = 2271 sp->tc_credits_per_period[RTE_SCHED_TRAFFIC_CLASS_BE] - 2272 tc_consumption; 2273 2274 if (tc_ov_consumption[RTE_SCHED_TRAFFIC_CLASS_BE] > 2275 (tc_ov_consumption_max - port->mtu)) { 2276 tc_ov_wm -= tc_ov_wm >> 7; 2277 if (tc_ov_wm < subport->tc_ov_wm_min) 2278 tc_ov_wm = subport->tc_ov_wm_min; 2279 2280 return tc_ov_wm; 2281 } 2282 2283 tc_ov_wm += (tc_ov_wm >> 7) + 1; 2284 if (tc_ov_wm > subport->tc_ov_wm_max) 2285 tc_ov_wm = subport->tc_ov_wm_max; 2286 2287 return tc_ov_wm; 2288 } 2289 2290 static inline void 2291 grinder_credits_update(struct rte_sched_port *port, 2292 struct rte_sched_subport *subport, uint32_t pos) 2293 { 2294 struct rte_sched_grinder *grinder = subport->grinder + pos; 2295 struct rte_sched_pipe *pipe = grinder->pipe; 2296 struct rte_sched_pipe_profile *params = grinder->pipe_params; 2297 struct rte_sched_subport_profile *sp = grinder->subport_params; 2298 uint64_t n_periods; 2299 uint32_t i; 2300 2301 /* Subport TB */ 2302 n_periods = (port->time - subport->tb_time) / sp->tb_period; 2303 subport->tb_credits += n_periods * sp->tb_credits_per_period; 2304 subport->tb_credits = RTE_MIN(subport->tb_credits, sp->tb_size); 2305 subport->tb_time += n_periods * sp->tb_period; 2306 2307 /* Pipe TB */ 2308 n_periods = (port->time - pipe->tb_time) / params->tb_period; 2309 pipe->tb_credits += n_periods * params->tb_credits_per_period; 2310 pipe->tb_credits = RTE_MIN(pipe->tb_credits, params->tb_size); 2311 pipe->tb_time += n_periods * params->tb_period; 2312 2313 /* Subport TCs */ 2314 if (unlikely(port->time >= subport->tc_time)) { 2315 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2316 subport->tc_credits[i] = sp->tc_credits_per_period[i]; 2317 2318 subport->tc_time = port->time + sp->tc_period; 2319 } 2320 2321 /* Pipe TCs */ 2322 if (unlikely(port->time >= pipe->tc_time)) { 2323 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2324 pipe->tc_credits[i] = params->tc_credits_per_period[i]; 2325 pipe->tc_time = port->time + params->tc_period; 2326 } 2327 } 2328 2329 static inline void 2330 grinder_credits_update_with_tc_ov(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 subport->tc_ov_wm = 2355 grinder_tc_ov_credits_update(port, subport, pos); 2356 2357 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2358 subport->tc_credits[i] = sp->tc_credits_per_period[i]; 2359 2360 subport->tc_time = port->time + sp->tc_period; 2361 subport->tc_ov_period_id++; 2362 } 2363 2364 /* Pipe TCs */ 2365 if (unlikely(port->time >= pipe->tc_time)) { 2366 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2367 pipe->tc_credits[i] = params->tc_credits_per_period[i]; 2368 pipe->tc_time = port->time + params->tc_period; 2369 } 2370 2371 /* Pipe TCs - Oversubscription */ 2372 if (unlikely(pipe->tc_ov_period_id != subport->tc_ov_period_id)) { 2373 pipe->tc_ov_credits = subport->tc_ov_wm * params->tc_ov_weight; 2374 2375 pipe->tc_ov_period_id = subport->tc_ov_period_id; 2376 } 2377 } 2378 2379 static inline int 2380 grinder_credits_check(struct rte_sched_port *port, 2381 struct rte_sched_subport *subport, uint32_t pos) 2382 { 2383 struct rte_sched_grinder *grinder = subport->grinder + pos; 2384 struct rte_sched_pipe *pipe = grinder->pipe; 2385 struct rte_mbuf *pkt = grinder->pkt; 2386 uint32_t tc_index = grinder->tc_index; 2387 uint64_t pkt_len = pkt->pkt_len + port->frame_overhead; 2388 uint64_t subport_tb_credits = subport->tb_credits; 2389 uint64_t subport_tc_credits = subport->tc_credits[tc_index]; 2390 uint64_t pipe_tb_credits = pipe->tb_credits; 2391 uint64_t pipe_tc_credits = pipe->tc_credits[tc_index]; 2392 int enough_credits; 2393 2394 /* Check pipe and subport credits */ 2395 enough_credits = (pkt_len <= subport_tb_credits) && 2396 (pkt_len <= subport_tc_credits) && 2397 (pkt_len <= pipe_tb_credits) && 2398 (pkt_len <= pipe_tc_credits); 2399 2400 if (!enough_credits) 2401 return 0; 2402 2403 /* Update pipe and subport credits */ 2404 subport->tb_credits -= pkt_len; 2405 subport->tc_credits[tc_index] -= pkt_len; 2406 pipe->tb_credits -= pkt_len; 2407 pipe->tc_credits[tc_index] -= pkt_len; 2408 2409 return 1; 2410 } 2411 2412 static inline int 2413 grinder_credits_check_with_tc_ov(struct rte_sched_port *port, 2414 struct rte_sched_subport *subport, uint32_t pos) 2415 { 2416 struct rte_sched_grinder *grinder = subport->grinder + pos; 2417 struct rte_sched_pipe *pipe = grinder->pipe; 2418 struct rte_mbuf *pkt = grinder->pkt; 2419 uint32_t tc_index = grinder->tc_index; 2420 uint64_t pkt_len = pkt->pkt_len + port->frame_overhead; 2421 uint64_t subport_tb_credits = subport->tb_credits; 2422 uint64_t subport_tc_credits = subport->tc_credits[tc_index]; 2423 uint64_t pipe_tb_credits = pipe->tb_credits; 2424 uint64_t pipe_tc_credits = pipe->tc_credits[tc_index]; 2425 uint64_t pipe_tc_ov_mask1[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE]; 2426 uint64_t pipe_tc_ov_mask2[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE] = {0}; 2427 uint64_t pipe_tc_ov_credits; 2428 uint32_t i; 2429 int enough_credits; 2430 2431 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; i++) 2432 pipe_tc_ov_mask1[i] = ~0LLU; 2433 2434 pipe_tc_ov_mask1[RTE_SCHED_TRAFFIC_CLASS_BE] = pipe->tc_ov_credits; 2435 pipe_tc_ov_mask2[RTE_SCHED_TRAFFIC_CLASS_BE] = ~0LLU; 2436 pipe_tc_ov_credits = pipe_tc_ov_mask1[tc_index]; 2437 2438 /* Check pipe and subport credits */ 2439 enough_credits = (pkt_len <= subport_tb_credits) && 2440 (pkt_len <= subport_tc_credits) && 2441 (pkt_len <= pipe_tb_credits) && 2442 (pkt_len <= pipe_tc_credits) && 2443 (pkt_len <= pipe_tc_ov_credits); 2444 2445 if (!enough_credits) 2446 return 0; 2447 2448 /* Update pipe and subport credits */ 2449 subport->tb_credits -= pkt_len; 2450 subport->tc_credits[tc_index] -= pkt_len; 2451 pipe->tb_credits -= pkt_len; 2452 pipe->tc_credits[tc_index] -= pkt_len; 2453 pipe->tc_ov_credits -= pipe_tc_ov_mask2[tc_index] & pkt_len; 2454 2455 return 1; 2456 } 2457 2458 2459 static inline int 2460 grinder_schedule(struct rte_sched_port *port, 2461 struct rte_sched_subport *subport, uint32_t pos) 2462 { 2463 struct rte_sched_grinder *grinder = subport->grinder + pos; 2464 struct rte_sched_queue *queue = grinder->queue[grinder->qpos]; 2465 uint32_t qindex = grinder->qindex[grinder->qpos]; 2466 struct rte_mbuf *pkt = grinder->pkt; 2467 uint32_t pkt_len = pkt->pkt_len + port->frame_overhead; 2468 uint32_t be_tc_active; 2469 2470 if (subport->tc_ov_enabled) { 2471 if (!grinder_credits_check_with_tc_ov(port, subport, pos)) 2472 return 0; 2473 } else { 2474 if (!grinder_credits_check(port, subport, pos)) 2475 return 0; 2476 } 2477 2478 /* Advance port time */ 2479 port->time += pkt_len; 2480 2481 /* Send packet */ 2482 port->pkts_out[port->n_pkts_out++] = pkt; 2483 queue->qr++; 2484 2485 be_tc_active = (grinder->tc_index == RTE_SCHED_TRAFFIC_CLASS_BE) ? ~0x0 : 0x0; 2486 grinder->wrr_tokens[grinder->qpos] += 2487 (pkt_len * grinder->wrr_cost[grinder->qpos]) & be_tc_active; 2488 2489 if (queue->qr == queue->qw) { 2490 rte_bitmap_clear(subport->bmp, qindex); 2491 grinder->qmask &= ~(1 << grinder->qpos); 2492 if (be_tc_active) 2493 grinder->wrr_mask[grinder->qpos] = 0; 2494 2495 rte_sched_port_red_set_queue_empty_timestamp(port, subport, qindex); 2496 } 2497 2498 rte_sched_port_pie_dequeue(subport, qindex, pkt_len, port->time_cpu_cycles); 2499 2500 /* Reset pipe loop detection */ 2501 subport->pipe_loop = RTE_SCHED_PIPE_INVALID; 2502 grinder->productive = 1; 2503 2504 return 1; 2505 } 2506 2507 static inline int 2508 grinder_pipe_exists(struct rte_sched_subport *subport, uint32_t base_pipe) 2509 { 2510 uint32_t i; 2511 2512 for (i = 0; i < RTE_SCHED_PORT_N_GRINDERS; i++) { 2513 if (subport->grinder_base_bmp_pos[i] == base_pipe) 2514 return 1; 2515 } 2516 2517 return 0; 2518 } 2519 2520 static inline void 2521 grinder_pcache_populate(struct rte_sched_subport *subport, 2522 uint32_t pos, uint32_t bmp_pos, uint64_t bmp_slab) 2523 { 2524 struct rte_sched_grinder *grinder = subport->grinder + pos; 2525 uint16_t w[4]; 2526 2527 grinder->pcache_w = 0; 2528 grinder->pcache_r = 0; 2529 2530 w[0] = (uint16_t) bmp_slab; 2531 w[1] = (uint16_t) (bmp_slab >> 16); 2532 w[2] = (uint16_t) (bmp_slab >> 32); 2533 w[3] = (uint16_t) (bmp_slab >> 48); 2534 2535 grinder->pcache_qmask[grinder->pcache_w] = w[0]; 2536 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos; 2537 grinder->pcache_w += (w[0] != 0); 2538 2539 grinder->pcache_qmask[grinder->pcache_w] = w[1]; 2540 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 16; 2541 grinder->pcache_w += (w[1] != 0); 2542 2543 grinder->pcache_qmask[grinder->pcache_w] = w[2]; 2544 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 32; 2545 grinder->pcache_w += (w[2] != 0); 2546 2547 grinder->pcache_qmask[grinder->pcache_w] = w[3]; 2548 grinder->pcache_qindex[grinder->pcache_w] = bmp_pos + 48; 2549 grinder->pcache_w += (w[3] != 0); 2550 } 2551 2552 static inline void 2553 grinder_tccache_populate(struct rte_sched_subport *subport, 2554 uint32_t pos, uint32_t qindex, uint16_t qmask) 2555 { 2556 struct rte_sched_grinder *grinder = subport->grinder + pos; 2557 uint8_t b, i; 2558 2559 grinder->tccache_w = 0; 2560 grinder->tccache_r = 0; 2561 2562 for (i = 0; i < RTE_SCHED_TRAFFIC_CLASS_BE; i++) { 2563 b = (uint8_t) ((qmask >> i) & 0x1); 2564 grinder->tccache_qmask[grinder->tccache_w] = b; 2565 grinder->tccache_qindex[grinder->tccache_w] = qindex + i; 2566 grinder->tccache_w += (b != 0); 2567 } 2568 2569 b = (uint8_t) (qmask >> (RTE_SCHED_TRAFFIC_CLASS_BE)); 2570 grinder->tccache_qmask[grinder->tccache_w] = b; 2571 grinder->tccache_qindex[grinder->tccache_w] = qindex + 2572 RTE_SCHED_TRAFFIC_CLASS_BE; 2573 grinder->tccache_w += (b != 0); 2574 } 2575 2576 static inline int 2577 grinder_next_tc(struct rte_sched_port *port, 2578 struct rte_sched_subport *subport, uint32_t pos) 2579 { 2580 struct rte_sched_grinder *grinder = subport->grinder + pos; 2581 struct rte_mbuf **qbase; 2582 uint32_t qindex; 2583 uint16_t qsize; 2584 2585 if (grinder->tccache_r == grinder->tccache_w) 2586 return 0; 2587 2588 qindex = grinder->tccache_qindex[grinder->tccache_r]; 2589 qbase = rte_sched_subport_pipe_qbase(subport, qindex); 2590 qsize = rte_sched_subport_pipe_qsize(port, subport, qindex); 2591 2592 grinder->tc_index = rte_sched_port_pipe_tc(port, qindex); 2593 grinder->qmask = grinder->tccache_qmask[grinder->tccache_r]; 2594 grinder->qsize = qsize; 2595 2596 if (grinder->tc_index < RTE_SCHED_TRAFFIC_CLASS_BE) { 2597 grinder->queue[0] = subport->queue + qindex; 2598 grinder->qbase[0] = qbase; 2599 grinder->qindex[0] = qindex; 2600 grinder->tccache_r++; 2601 2602 return 1; 2603 } 2604 2605 grinder->queue[0] = subport->queue + qindex; 2606 grinder->queue[1] = subport->queue + qindex + 1; 2607 grinder->queue[2] = subport->queue + qindex + 2; 2608 grinder->queue[3] = subport->queue + qindex + 3; 2609 2610 grinder->qbase[0] = qbase; 2611 grinder->qbase[1] = qbase + qsize; 2612 grinder->qbase[2] = qbase + 2 * qsize; 2613 grinder->qbase[3] = qbase + 3 * qsize; 2614 2615 grinder->qindex[0] = qindex; 2616 grinder->qindex[1] = qindex + 1; 2617 grinder->qindex[2] = qindex + 2; 2618 grinder->qindex[3] = qindex + 3; 2619 2620 grinder->tccache_r++; 2621 return 1; 2622 } 2623 2624 static inline int 2625 grinder_next_pipe(struct rte_sched_port *port, 2626 struct rte_sched_subport *subport, uint32_t pos) 2627 { 2628 struct rte_sched_grinder *grinder = subport->grinder + pos; 2629 uint32_t pipe_qindex; 2630 uint16_t pipe_qmask; 2631 2632 if (grinder->pcache_r < grinder->pcache_w) { 2633 pipe_qmask = grinder->pcache_qmask[grinder->pcache_r]; 2634 pipe_qindex = grinder->pcache_qindex[grinder->pcache_r]; 2635 grinder->pcache_r++; 2636 } else { 2637 uint64_t bmp_slab = 0; 2638 uint32_t bmp_pos = 0; 2639 2640 /* Get another non-empty pipe group */ 2641 if (unlikely(rte_bitmap_scan(subport->bmp, &bmp_pos, &bmp_slab) <= 0)) 2642 return 0; 2643 2644 #ifdef RTE_SCHED_DEBUG 2645 debug_check_queue_slab(subport, bmp_pos, bmp_slab); 2646 #endif 2647 2648 /* Return if pipe group already in one of the other grinders */ 2649 subport->grinder_base_bmp_pos[pos] = RTE_SCHED_BMP_POS_INVALID; 2650 if (unlikely(grinder_pipe_exists(subport, bmp_pos))) 2651 return 0; 2652 2653 subport->grinder_base_bmp_pos[pos] = bmp_pos; 2654 2655 /* Install new pipe group into grinder's pipe cache */ 2656 grinder_pcache_populate(subport, pos, bmp_pos, bmp_slab); 2657 2658 pipe_qmask = grinder->pcache_qmask[0]; 2659 pipe_qindex = grinder->pcache_qindex[0]; 2660 grinder->pcache_r = 1; 2661 } 2662 2663 /* Install new pipe in the grinder */ 2664 grinder->pindex = pipe_qindex >> 4; 2665 grinder->subport = subport; 2666 grinder->pipe = subport->pipe + grinder->pindex; 2667 grinder->pipe_params = NULL; /* to be set after the pipe structure is prefetched */ 2668 grinder->productive = 0; 2669 2670 grinder_tccache_populate(subport, pos, pipe_qindex, pipe_qmask); 2671 grinder_next_tc(port, subport, pos); 2672 2673 /* Check for pipe exhaustion */ 2674 if (grinder->pindex == subport->pipe_loop) { 2675 subport->pipe_exhaustion = 1; 2676 subport->pipe_loop = RTE_SCHED_PIPE_INVALID; 2677 } 2678 2679 return 1; 2680 } 2681 2682 2683 static inline void 2684 grinder_wrr_load(struct rte_sched_subport *subport, uint32_t pos) 2685 { 2686 struct rte_sched_grinder *grinder = subport->grinder + pos; 2687 struct rte_sched_pipe *pipe = grinder->pipe; 2688 struct rte_sched_pipe_profile *pipe_params = grinder->pipe_params; 2689 uint32_t qmask = grinder->qmask; 2690 2691 grinder->wrr_tokens[0] = 2692 ((uint16_t) pipe->wrr_tokens[0]) << RTE_SCHED_WRR_SHIFT; 2693 grinder->wrr_tokens[1] = 2694 ((uint16_t) pipe->wrr_tokens[1]) << RTE_SCHED_WRR_SHIFT; 2695 grinder->wrr_tokens[2] = 2696 ((uint16_t) pipe->wrr_tokens[2]) << RTE_SCHED_WRR_SHIFT; 2697 grinder->wrr_tokens[3] = 2698 ((uint16_t) pipe->wrr_tokens[3]) << RTE_SCHED_WRR_SHIFT; 2699 2700 grinder->wrr_mask[0] = (qmask & 0x1) * 0xFFFF; 2701 grinder->wrr_mask[1] = ((qmask >> 1) & 0x1) * 0xFFFF; 2702 grinder->wrr_mask[2] = ((qmask >> 2) & 0x1) * 0xFFFF; 2703 grinder->wrr_mask[3] = ((qmask >> 3) & 0x1) * 0xFFFF; 2704 2705 grinder->wrr_cost[0] = pipe_params->wrr_cost[0]; 2706 grinder->wrr_cost[1] = pipe_params->wrr_cost[1]; 2707 grinder->wrr_cost[2] = pipe_params->wrr_cost[2]; 2708 grinder->wrr_cost[3] = pipe_params->wrr_cost[3]; 2709 } 2710 2711 static inline void 2712 grinder_wrr_store(struct rte_sched_subport *subport, uint32_t pos) 2713 { 2714 struct rte_sched_grinder *grinder = subport->grinder + pos; 2715 struct rte_sched_pipe *pipe = grinder->pipe; 2716 2717 pipe->wrr_tokens[0] = 2718 (grinder->wrr_tokens[0] & grinder->wrr_mask[0]) >> 2719 RTE_SCHED_WRR_SHIFT; 2720 pipe->wrr_tokens[1] = 2721 (grinder->wrr_tokens[1] & grinder->wrr_mask[1]) >> 2722 RTE_SCHED_WRR_SHIFT; 2723 pipe->wrr_tokens[2] = 2724 (grinder->wrr_tokens[2] & grinder->wrr_mask[2]) >> 2725 RTE_SCHED_WRR_SHIFT; 2726 pipe->wrr_tokens[3] = 2727 (grinder->wrr_tokens[3] & grinder->wrr_mask[3]) >> 2728 RTE_SCHED_WRR_SHIFT; 2729 } 2730 2731 static inline void 2732 grinder_wrr(struct rte_sched_subport *subport, uint32_t pos) 2733 { 2734 struct rte_sched_grinder *grinder = subport->grinder + pos; 2735 uint16_t wrr_tokens_min; 2736 2737 grinder->wrr_tokens[0] |= ~grinder->wrr_mask[0]; 2738 grinder->wrr_tokens[1] |= ~grinder->wrr_mask[1]; 2739 grinder->wrr_tokens[2] |= ~grinder->wrr_mask[2]; 2740 grinder->wrr_tokens[3] |= ~grinder->wrr_mask[3]; 2741 2742 grinder->qpos = rte_min_pos_4_u16(grinder->wrr_tokens); 2743 wrr_tokens_min = grinder->wrr_tokens[grinder->qpos]; 2744 2745 grinder->wrr_tokens[0] -= wrr_tokens_min; 2746 grinder->wrr_tokens[1] -= wrr_tokens_min; 2747 grinder->wrr_tokens[2] -= wrr_tokens_min; 2748 grinder->wrr_tokens[3] -= wrr_tokens_min; 2749 } 2750 2751 2752 #define grinder_evict(subport, pos) 2753 2754 static inline void 2755 grinder_prefetch_pipe(struct rte_sched_subport *subport, uint32_t pos) 2756 { 2757 struct rte_sched_grinder *grinder = subport->grinder + pos; 2758 2759 rte_prefetch0(grinder->pipe); 2760 rte_prefetch0(grinder->queue[0]); 2761 } 2762 2763 static inline void 2764 grinder_prefetch_tc_queue_arrays(struct rte_sched_subport *subport, uint32_t pos) 2765 { 2766 struct rte_sched_grinder *grinder = subport->grinder + pos; 2767 uint16_t qsize, qr[RTE_SCHED_MAX_QUEUES_PER_TC]; 2768 2769 qsize = grinder->qsize; 2770 grinder->qpos = 0; 2771 2772 if (grinder->tc_index < RTE_SCHED_TRAFFIC_CLASS_BE) { 2773 qr[0] = grinder->queue[0]->qr & (qsize - 1); 2774 2775 rte_prefetch0(grinder->qbase[0] + qr[0]); 2776 return; 2777 } 2778 2779 qr[0] = grinder->queue[0]->qr & (qsize - 1); 2780 qr[1] = grinder->queue[1]->qr & (qsize - 1); 2781 qr[2] = grinder->queue[2]->qr & (qsize - 1); 2782 qr[3] = grinder->queue[3]->qr & (qsize - 1); 2783 2784 rte_prefetch0(grinder->qbase[0] + qr[0]); 2785 rte_prefetch0(grinder->qbase[1] + qr[1]); 2786 2787 grinder_wrr_load(subport, pos); 2788 grinder_wrr(subport, pos); 2789 2790 rte_prefetch0(grinder->qbase[2] + qr[2]); 2791 rte_prefetch0(grinder->qbase[3] + qr[3]); 2792 } 2793 2794 static inline void 2795 grinder_prefetch_mbuf(struct rte_sched_subport *subport, uint32_t pos) 2796 { 2797 struct rte_sched_grinder *grinder = subport->grinder + pos; 2798 uint32_t qpos = grinder->qpos; 2799 struct rte_mbuf **qbase = grinder->qbase[qpos]; 2800 uint16_t qsize = grinder->qsize; 2801 uint16_t qr = grinder->queue[qpos]->qr & (qsize - 1); 2802 2803 grinder->pkt = qbase[qr]; 2804 rte_prefetch0(grinder->pkt); 2805 2806 if (unlikely((qr & 0x7) == 7)) { 2807 uint16_t qr_next = (grinder->queue[qpos]->qr + 1) & (qsize - 1); 2808 2809 rte_prefetch0(qbase + qr_next); 2810 } 2811 } 2812 2813 static inline uint32_t 2814 grinder_handle(struct rte_sched_port *port, 2815 struct rte_sched_subport *subport, uint32_t pos) 2816 { 2817 struct rte_sched_grinder *grinder = subport->grinder + pos; 2818 2819 switch (grinder->state) { 2820 case e_GRINDER_PREFETCH_PIPE: 2821 { 2822 if (grinder_next_pipe(port, subport, pos)) { 2823 grinder_prefetch_pipe(subport, pos); 2824 subport->busy_grinders++; 2825 2826 grinder->state = e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS; 2827 return 0; 2828 } 2829 2830 return 0; 2831 } 2832 2833 case e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS: 2834 { 2835 struct rte_sched_pipe *pipe = grinder->pipe; 2836 2837 grinder->pipe_params = subport->pipe_profiles + pipe->profile; 2838 grinder->subport_params = port->subport_profiles + 2839 subport->profile; 2840 2841 grinder_prefetch_tc_queue_arrays(subport, pos); 2842 2843 if (subport->tc_ov_enabled) 2844 grinder_credits_update_with_tc_ov(port, subport, pos); 2845 else 2846 grinder_credits_update(port, subport, pos); 2847 2848 grinder->state = e_GRINDER_PREFETCH_MBUF; 2849 return 0; 2850 } 2851 2852 case e_GRINDER_PREFETCH_MBUF: 2853 { 2854 grinder_prefetch_mbuf(subport, pos); 2855 2856 grinder->state = e_GRINDER_READ_MBUF; 2857 return 0; 2858 } 2859 2860 case e_GRINDER_READ_MBUF: 2861 { 2862 uint32_t wrr_active, result = 0; 2863 2864 result = grinder_schedule(port, subport, pos); 2865 2866 wrr_active = (grinder->tc_index == RTE_SCHED_TRAFFIC_CLASS_BE); 2867 2868 /* Look for next packet within the same TC */ 2869 if (result && grinder->qmask) { 2870 if (wrr_active) 2871 grinder_wrr(subport, pos); 2872 2873 grinder_prefetch_mbuf(subport, pos); 2874 2875 return 1; 2876 } 2877 2878 if (wrr_active) 2879 grinder_wrr_store(subport, pos); 2880 2881 /* Look for another active TC within same pipe */ 2882 if (grinder_next_tc(port, subport, pos)) { 2883 grinder_prefetch_tc_queue_arrays(subport, pos); 2884 2885 grinder->state = e_GRINDER_PREFETCH_MBUF; 2886 return result; 2887 } 2888 2889 if (grinder->productive == 0 && 2890 subport->pipe_loop == RTE_SCHED_PIPE_INVALID) 2891 subport->pipe_loop = grinder->pindex; 2892 2893 grinder_evict(subport, pos); 2894 2895 /* Look for another active pipe */ 2896 if (grinder_next_pipe(port, subport, pos)) { 2897 grinder_prefetch_pipe(subport, pos); 2898 2899 grinder->state = e_GRINDER_PREFETCH_TC_QUEUE_ARRAYS; 2900 return result; 2901 } 2902 2903 /* No active pipe found */ 2904 subport->busy_grinders--; 2905 2906 grinder->state = e_GRINDER_PREFETCH_PIPE; 2907 return result; 2908 } 2909 2910 default: 2911 rte_panic("Algorithmic error (invalid state)\n"); 2912 return 0; 2913 } 2914 } 2915 2916 static inline void 2917 rte_sched_port_time_resync(struct rte_sched_port *port) 2918 { 2919 uint64_t cycles = rte_get_tsc_cycles(); 2920 uint64_t cycles_diff; 2921 uint64_t bytes_diff; 2922 uint32_t i; 2923 2924 if (cycles < port->time_cpu_cycles) 2925 port->time_cpu_cycles = 0; 2926 2927 cycles_diff = cycles - port->time_cpu_cycles; 2928 /* Compute elapsed time in bytes */ 2929 bytes_diff = rte_reciprocal_divide(cycles_diff << RTE_SCHED_TIME_SHIFT, 2930 port->inv_cycles_per_byte); 2931 2932 /* Advance port time */ 2933 port->time_cpu_cycles += 2934 (bytes_diff * port->cycles_per_byte) >> RTE_SCHED_TIME_SHIFT; 2935 port->time_cpu_bytes += bytes_diff; 2936 if (port->time < port->time_cpu_bytes) 2937 port->time = port->time_cpu_bytes; 2938 2939 /* Reset pipe loop detection */ 2940 for (i = 0; i < port->n_subports_per_port; i++) 2941 port->subports[i]->pipe_loop = RTE_SCHED_PIPE_INVALID; 2942 } 2943 2944 static inline int 2945 rte_sched_port_exceptions(struct rte_sched_subport *subport, int second_pass) 2946 { 2947 int exceptions; 2948 2949 /* Check if any exception flag is set */ 2950 exceptions = (second_pass && subport->busy_grinders == 0) || 2951 (subport->pipe_exhaustion == 1); 2952 2953 /* Clear exception flags */ 2954 subport->pipe_exhaustion = 0; 2955 2956 return exceptions; 2957 } 2958 2959 int 2960 rte_sched_port_dequeue(struct rte_sched_port *port, struct rte_mbuf **pkts, uint32_t n_pkts) 2961 { 2962 struct rte_sched_subport *subport; 2963 uint32_t subport_id = port->subport_id; 2964 uint32_t i, n_subports = 0, count; 2965 2966 port->pkts_out = pkts; 2967 port->n_pkts_out = 0; 2968 2969 rte_sched_port_time_resync(port); 2970 2971 /* Take each queue in the grinder one step further */ 2972 for (i = 0, count = 0; ; i++) { 2973 subport = port->subports[subport_id]; 2974 2975 count += grinder_handle(port, subport, 2976 i & (RTE_SCHED_PORT_N_GRINDERS - 1)); 2977 2978 if (count == n_pkts) { 2979 subport_id++; 2980 2981 if (subport_id == port->n_subports_per_port) 2982 subport_id = 0; 2983 2984 port->subport_id = subport_id; 2985 break; 2986 } 2987 2988 if (rte_sched_port_exceptions(subport, i >= RTE_SCHED_PORT_N_GRINDERS)) { 2989 i = 0; 2990 subport_id++; 2991 n_subports++; 2992 } 2993 2994 if (subport_id == port->n_subports_per_port) 2995 subport_id = 0; 2996 2997 if (n_subports == port->n_subports_per_port) { 2998 port->subport_id = subport_id; 2999 break; 3000 } 3001 } 3002 3003 return count; 3004 } 3005 3006 RTE_LOG_REGISTER_DEFAULT(sched_logtype, INFO); 3007