drivers/event/sw/sw_evdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4
   5 #include <inttypes.h>
   6 #include <string.h>
   7
   8 #include <rte_bus_vdev.h>
   9 #include <rte_kvargs.h>
  10 #include <rte_ring.h>
  11 #include <rte_errno.h>
  12 #include <rte_event_ring.h>
  13 #include <rte_service_component.h>
  14
  15 #include "sw_evdev.h"
  16 #include "iq_chunk.h"
  17
  18 #define EVENTDEV_NAME_SW_PMD event_sw
  19 #define NUMA_NODE_ARG "numa_node"
  20 #define SCHED_QUANTA_ARG "sched_quanta"
  21 #define CREDIT_QUANTA_ARG "credit_quanta"
  22
  23 static void
  24 sw_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info);
  25
  26 static int
  27 sw_port_link(struct rte_eventdev *dev, void *port, const uint8_t queues[],
  28                 const uint8_t priorities[], uint16_t num)
  29 {
  30         struct sw_port *p = port;
  31         struct sw_evdev *sw = sw_pmd_priv(dev);
  32         int i;
  33
  34         RTE_SET_USED(priorities);
  35         for (i = 0; i < num; i++) {
  36                 struct sw_qid *q = &sw->qids[queues[i]];
  37                 unsigned int j;
  38
  39                 /* check for qid map overflow */
  40                 if (q->cq_num_mapped_cqs >= RTE_DIM(q->cq_map)) {
  41                         rte_errno = -EDQUOT;
  42                         break;
  43                 }
  44
  45                 if (p->is_directed && p->num_qids_mapped > 0) {
  46                         rte_errno = -EDQUOT;
  47                         break;
  48                 }
  49
  50                 for (j = 0; j < q->cq_num_mapped_cqs; j++) {
  51                         if (q->cq_map[j] == p->id)
  52                                 break;
  53                 }
  54
  55                 /* check if port is already linked */
  56                 if (j < q->cq_num_mapped_cqs)
  57                         continue;
  58
  59                 if (q->type == SW_SCHED_TYPE_DIRECT) {
  60                         /* check directed qids only map to one port */
  61                         if (p->num_qids_mapped > 0) {
  62                                 rte_errno = -EDQUOT;
  63                                 break;
  64                         }
  65                         /* check port only takes a directed flow */
  66                         if (num > 1) {
  67                                 rte_errno = -EDQUOT;
  68                                 break;
  69                         }
  70
  71                         p->is_directed = 1;
  72                         p->num_qids_mapped = 1;
  73                 } else if (q->type == RTE_SCHED_TYPE_ORDERED) {
  74                         p->num_ordered_qids++;
  75                         p->num_qids_mapped++;
  76                 } else if (q->type == RTE_SCHED_TYPE_ATOMIC ||
  77                                 q->type == RTE_SCHED_TYPE_PARALLEL) {
  78                         p->num_qids_mapped++;
  79                 }
  80
  81                 q->cq_map[q->cq_num_mapped_cqs] = p->id;
  82                 rte_smp_wmb();
  83                 q->cq_num_mapped_cqs++;
  84         }
  85         return i;
  86 }
  87
  88 static int
  89 sw_port_unlink(struct rte_eventdev *dev, void *port, uint8_t queues[],
  90                 uint16_t nb_unlinks)
  91 {
  92         struct sw_port *p = port;
  93         struct sw_evdev *sw = sw_pmd_priv(dev);
  94         unsigned int i, j;
  95
  96         int unlinked = 0;
  97         for (i = 0; i < nb_unlinks; i++) {
  98                 struct sw_qid *q = &sw->qids[queues[i]];
  99                 for (j = 0; j < q->cq_num_mapped_cqs; j++) {
 100                         if (q->cq_map[j] == p->id) {
 101                                 q->cq_map[j] =
 102                                         q->cq_map[q->cq_num_mapped_cqs - 1];
 103                                 rte_smp_wmb();
 104                                 q->cq_num_mapped_cqs--;
 105                                 unlinked++;
 106
 107                                 p->num_qids_mapped--;
 108
 109                                 if (q->type == RTE_SCHED_TYPE_ORDERED)
 110                                         p->num_ordered_qids--;
 111
 112                                 continue;
 113                         }
 114                 }
 115         }
 116         return unlinked;
 117 }
 118
 119 static int
 120 sw_port_setup(struct rte_eventdev *dev, uint8_t port_id,
 121                 const struct rte_event_port_conf *conf)
 122 {
 123         struct sw_evdev *sw = sw_pmd_priv(dev);
 124         struct sw_port *p = &sw->ports[port_id];
 125         char buf[RTE_RING_NAMESIZE];
 126         unsigned int i;
 127
 128         struct rte_event_dev_info info;
 129         sw_info_get(dev, &info);
 130
 131         /* detect re-configuring and return credits to instance if needed */
 132         if (p->initialized) {
 133                 /* taking credits from pool is done one quanta at a time, and
 134                  * credits may be spend (counted in p->inflights) or still
 135                  * available in the port (p->inflight_credits). We must return
 136                  * the sum to no leak credits
 137                  */
 138                 int possible_inflights = p->inflight_credits + p->inflights;
 139                 rte_atomic32_sub(&sw->inflights, possible_inflights);
 140         }
 141
 142         *p = (struct sw_port){0}; /* zero entire structure */
 143         p->id = port_id;
 144         p->sw = sw;
 145
 146         /* check to see if rings exists - port_setup() can be called multiple
 147          * times legally (assuming device is stopped). If ring exists, free it
 148          * to so it gets re-created with the correct size
 149          */
 150         snprintf(buf, sizeof(buf), "sw%d_p%u_%s", dev->data->dev_id,
 151                         port_id, "rx_worker_ring");
 152         struct rte_event_ring *existing_ring = rte_event_ring_lookup(buf);
 153         if (existing_ring)
 154                 rte_event_ring_free(existing_ring);
 155
 156         p->rx_worker_ring = rte_event_ring_create(buf, MAX_SW_PROD_Q_DEPTH,
 157                         dev->data->socket_id,
 158                         RING_F_SP_ENQ | RING_F_SC_DEQ | RING_F_EXACT_SZ);
 159         if (p->rx_worker_ring == NULL) {
 160                 SW_LOG_ERR("Error creating RX worker ring for port %d\n",
 161                                 port_id);
 162                 return -1;
 163         }
 164
 165         p->inflight_max = conf->new_event_threshold;
 166
 167         /* check if ring exists, same as rx_worker above */
 168         snprintf(buf, sizeof(buf), "sw%d_p%u, %s", dev->data->dev_id,
 169                         port_id, "cq_worker_ring");
 170         existing_ring = rte_event_ring_lookup(buf);
 171         if (existing_ring)
 172                 rte_event_ring_free(existing_ring);
 173
 174         p->cq_worker_ring = rte_event_ring_create(buf, conf->dequeue_depth,
 175                         dev->data->socket_id,
 176                         RING_F_SP_ENQ | RING_F_SC_DEQ | RING_F_EXACT_SZ);
 177         if (p->cq_worker_ring == NULL) {
 178                 rte_event_ring_free(p->rx_worker_ring);
 179                 SW_LOG_ERR("Error creating CQ worker ring for port %d\n",
 180                                 port_id);
 181                 return -1;
 182         }
 183         sw->cq_ring_space[port_id] = conf->dequeue_depth;
 184
 185         /* set hist list contents to empty */
 186         for (i = 0; i < SW_PORT_HIST_LIST; i++) {
 187                 p->hist_list[i].fid = -1;
 188                 p->hist_list[i].qid = -1;
 189         }
 190         dev->data->ports[port_id] = p;
 191
 192         rte_smp_wmb();
 193         p->initialized = 1;
 194         return 0;
 195 }
 196
 197 static void
 198 sw_port_release(void *port)
 199 {
 200         struct sw_port *p = (void *)port;
 201         if (p == NULL)
 202                 return;
 203
 204         rte_event_ring_free(p->rx_worker_ring);
 205         rte_event_ring_free(p->cq_worker_ring);
 206         memset(p, 0, sizeof(*p));
 207 }
 208
 209 static int32_t
 210 qid_init(struct sw_evdev *sw, unsigned int idx, int type,
 211                 const struct rte_event_queue_conf *queue_conf)
 212 {
 213         unsigned int i;
 214         int dev_id = sw->data->dev_id;
 215         int socket_id = sw->data->socket_id;
 216         char buf[IQ_ROB_NAMESIZE];
 217         struct sw_qid *qid = &sw->qids[idx];
 218
 219         for (i = 0; i < SW_IQS_MAX; i++)
 220                 iq_init(sw, &qid->iq[i]);
 221
 222         /* Initialize the FID structures to no pinning (-1), and zero packets */
 223         const struct sw_fid_t fid = {.cq = -1, .pcount = 0};
 224         for (i = 0; i < RTE_DIM(qid->fids); i++)
 225                 qid->fids[i] = fid;
 226
 227         qid->id = idx;
 228         qid->type = type;
 229         qid->priority = queue_conf->priority;
 230
 231         if (qid->type == RTE_SCHED_TYPE_ORDERED) {
 232                 char ring_name[RTE_RING_NAMESIZE];
 233                 uint32_t window_size;
 234
 235                 /* rte_ring and window_size_mask require require window_size to
 236                  * be a power-of-2.
 237                  */
 238                 window_size = rte_align32pow2(
 239                                 queue_conf->nb_atomic_order_sequences);
 240
 241                 qid->window_size = window_size - 1;
 242
 243                 if (!window_size) {
 244                         SW_LOG_DBG(
 245                                 "invalid reorder_window_size for ordered queue\n"
 246                                 );
 247                         goto cleanup;
 248                 }
 249
 250                 snprintf(buf, sizeof(buf), "sw%d_iq_%d_rob", dev_id, i);
 251                 qid->reorder_buffer = rte_zmalloc_socket(buf,
 252                                 window_size * sizeof(qid->reorder_buffer[0]),
 253                                 0, socket_id);
 254                 if (!qid->reorder_buffer) {
 255                         SW_LOG_DBG("reorder_buffer malloc failed\n");
 256                         goto cleanup;
 257                 }
 258
 259                 memset(&qid->reorder_buffer[0],
 260                        0,
 261                        window_size * sizeof(qid->reorder_buffer[0]));
 262
 263                 snprintf(ring_name, sizeof(ring_name), "sw%d_q%d_freelist",
 264                                 dev_id, idx);
 265
 266                 /* lookup the ring, and if it already exists, free it */
 267                 struct rte_ring *cleanup = rte_ring_lookup(ring_name);
 268                 if (cleanup)
 269                         rte_ring_free(cleanup);
 270
 271                 qid->reorder_buffer_freelist = rte_ring_create(ring_name,
 272                                 window_size,
 273                                 socket_id,
 274                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 275                 if (!qid->reorder_buffer_freelist) {
 276                         SW_LOG_DBG("freelist ring create failed");
 277                         goto cleanup;
 278                 }
 279
 280                 /* Populate the freelist with reorder buffer entries. Enqueue
 281                  * 'window_size - 1' entries because the rte_ring holds only
 282                  * that many.
 283                  */
 284                 for (i = 0; i < window_size - 1; i++) {
 285                         if (rte_ring_sp_enqueue(qid->reorder_buffer_freelist,
 286                                                 &qid->reorder_buffer[i]) < 0)
 287                                 goto cleanup;
 288                 }
 289
 290                 qid->reorder_buffer_index = 0;
 291                 qid->cq_next_tx = 0;
 292         }
 293
 294         qid->initialized = 1;
 295
 296         return 0;
 297
 298 cleanup:
 299         for (i = 0; i < SW_IQS_MAX; i++) {
 300                 if (qid->iq[i].head)
 301                         iq_free_chunk(sw, qid->iq[i].head);
 302         }
 303
 304         if (qid->reorder_buffer) {
 305                 rte_free(qid->reorder_buffer);
 306                 qid->reorder_buffer = NULL;
 307         }
 308
 309         if (qid->reorder_buffer_freelist) {
 310                 rte_ring_free(qid->reorder_buffer_freelist);
 311                 qid->reorder_buffer_freelist = NULL;
 312         }
 313
 314         return -EINVAL;
 315 }
 316
 317 static void
 318 sw_queue_release(struct rte_eventdev *dev, uint8_t id)
 319 {
 320         struct sw_evdev *sw = sw_pmd_priv(dev);
 321         struct sw_qid *qid = &sw->qids[id];
 322         uint32_t i;
 323
 324         for (i = 0; i < SW_IQS_MAX; i++) {
 325                 if (!qid->iq[i].head)
 326                         continue;
 327                 iq_free_chunk(sw, qid->iq[i].head);
 328         }
 329
 330         if (qid->type == RTE_SCHED_TYPE_ORDERED) {
 331                 rte_free(qid->reorder_buffer);
 332                 rte_ring_free(qid->reorder_buffer_freelist);
 333         }
 334         memset(qid, 0, sizeof(*qid));
 335 }
 336
 337 static int
 338 sw_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
 339                 const struct rte_event_queue_conf *conf)
 340 {
 341         int type;
 342
 343         type = conf->schedule_type;
 344
 345         if (RTE_EVENT_QUEUE_CFG_SINGLE_LINK & conf->event_queue_cfg) {
 346                 type = SW_SCHED_TYPE_DIRECT;
 347         } else if (RTE_EVENT_QUEUE_CFG_ALL_TYPES
 348                         & conf->event_queue_cfg) {
 349                 SW_LOG_ERR("QUEUE_CFG_ALL_TYPES not supported\n");
 350                 return -ENOTSUP;
 351         }
 352
 353         struct sw_evdev *sw = sw_pmd_priv(dev);
 354
 355         if (sw->qids[queue_id].initialized)
 356                 sw_queue_release(dev, queue_id);
 357
 358         return qid_init(sw, queue_id, type, conf);
 359 }
 360
 361 static void
 362 sw_queue_def_conf(struct rte_eventdev *dev, uint8_t queue_id,
 363                                  struct rte_event_queue_conf *conf)
 364 {
 365         RTE_SET_USED(dev);
 366         RTE_SET_USED(queue_id);
 367
 368         static const struct rte_event_queue_conf default_conf = {
 369                 .nb_atomic_flows = 4096,
 370                 .nb_atomic_order_sequences = 1,
 371                 .schedule_type = RTE_SCHED_TYPE_ATOMIC,
 372                 .priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
 373         };
 374
 375         *conf = default_conf;
 376 }
 377
 378 static void
 379 sw_port_def_conf(struct rte_eventdev *dev, uint8_t port_id,
 380                  struct rte_event_port_conf *port_conf)
 381 {
 382         RTE_SET_USED(dev);
 383         RTE_SET_USED(port_id);
 384
 385         port_conf->new_event_threshold = 1024;
 386         port_conf->dequeue_depth = 16;
 387         port_conf->enqueue_depth = 16;
 388 }
 389
 390 static int
 391 sw_dev_configure(const struct rte_eventdev *dev)
 392 {
 393         struct sw_evdev *sw = sw_pmd_priv(dev);
 394         const struct rte_eventdev_data *data = dev->data;
 395         const struct rte_event_dev_config *conf = &data->dev_conf;
 396         int num_chunks, i;
 397
 398         sw->qid_count = conf->nb_event_queues;
 399         sw->port_count = conf->nb_event_ports;
 400         sw->nb_events_limit = conf->nb_events_limit;
 401         rte_atomic32_set(&sw->inflights, 0);
 402
 403         /* Number of chunks sized for worst-case spread of events across IQs */
 404         num_chunks = ((SW_INFLIGHT_EVENTS_TOTAL/SW_EVS_PER_Q_CHUNK)+1) +
 405                         sw->qid_count*SW_IQS_MAX*2;
 406
 407         /* If this is a reconfiguration, free the previous IQ allocation */
 408         if (sw->chunks)
 409                 rte_free(sw->chunks);
 410
 411         sw->chunks = rte_malloc_socket(NULL,
 412                                        sizeof(struct sw_queue_chunk) *
 413                                        num_chunks,
 414                                        0,
 415                                        sw->data->socket_id);
 416         if (!sw->chunks)
 417                 return -ENOMEM;
 418
 419         sw->chunk_list_head = NULL;
 420         for (i = 0; i < num_chunks; i++)
 421                 iq_free_chunk(sw, &sw->chunks[i]);
 422
 423         if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT)
 424                 return -ENOTSUP;
 425
 426         return 0;
 427 }
 428
 429 struct rte_eth_dev;
 430
 431 static int
 432 sw_eth_rx_adapter_caps_get(const struct rte_eventdev *dev,
 433                         const struct rte_eth_dev *eth_dev,
 434                         uint32_t *caps)
 435 {
 436         RTE_SET_USED(dev);
 437         RTE_SET_USED(eth_dev);
 438         *caps = RTE_EVENT_ETH_RX_ADAPTER_SW_CAP;
 439         return 0;
 440 }
 441
 442 static void
 443 sw_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info)
 444 {
 445         RTE_SET_USED(dev);
 446
 447         static const struct rte_event_dev_info evdev_sw_info = {
 448                         .driver_name = SW_PMD_NAME,
 449                         .max_event_queues = RTE_EVENT_MAX_QUEUES_PER_DEV,
 450                         .max_event_queue_flows = SW_QID_NUM_FIDS,
 451                         .max_event_queue_priority_levels = SW_Q_PRIORITY_MAX,
 452                         .max_event_priority_levels = SW_IQS_MAX,
 453                         .max_event_ports = SW_PORTS_MAX,
 454                         .max_event_port_dequeue_depth = MAX_SW_CONS_Q_DEPTH,
 455                         .max_event_port_enqueue_depth = MAX_SW_PROD_Q_DEPTH,
 456                         .max_num_events = SW_INFLIGHT_EVENTS_TOTAL,
 457                         .event_dev_cap = (RTE_EVENT_DEV_CAP_QUEUE_QOS |
 458                                         RTE_EVENT_DEV_CAP_BURST_MODE |
 459                                         RTE_EVENT_DEV_CAP_EVENT_QOS),
 460         };
 461
 462         *info = evdev_sw_info;
 463 }
 464
 465 static void
 466 sw_dump(struct rte_eventdev *dev, FILE *f)
 467 {
 468         const struct sw_evdev *sw = sw_pmd_priv(dev);
 469
 470         static const char * const q_type_strings[] = {
 471                         "Ordered", "Atomic", "Parallel", "Directed"
 472         };
 473         uint32_t i;
 474         fprintf(f, "EventDev %s: ports %d, qids %d\n", "todo-fix-name",
 475                         sw->port_count, sw->qid_count);
 476
 477         fprintf(f, "\trx   %"PRIu64"\n\tdrop %"PRIu64"\n\ttx   %"PRIu64"\n",
 478                 sw->stats.rx_pkts, sw->stats.rx_dropped, sw->stats.tx_pkts);
 479         fprintf(f, "\tsched calls: %"PRIu64"\n", sw->sched_called);
 480         fprintf(f, "\tsched cq/qid call: %"PRIu64"\n", sw->sched_cq_qid_called);
 481         fprintf(f, "\tsched no IQ enq: %"PRIu64"\n", sw->sched_no_iq_enqueues);
 482         fprintf(f, "\tsched no CQ enq: %"PRIu64"\n", sw->sched_no_cq_enqueues);
 483         uint32_t inflights = rte_atomic32_read(&sw->inflights);
 484         uint32_t credits = sw->nb_events_limit - inflights;
 485         fprintf(f, "\tinflight %d, credits: %d\n", inflights, credits);
 486
 487 #define COL_RED "\x1b[31m"
 488 #define COL_RESET "\x1b[0m"
 489
 490         for (i = 0; i < sw->port_count; i++) {
 491                 int max, j;
 492                 const struct sw_port *p = &sw->ports[i];
 493                 if (!p->initialized) {
 494                         fprintf(f, "  %sPort %d not initialized.%s\n",
 495                                 COL_RED, i, COL_RESET);
 496                         continue;
 497                 }
 498                 fprintf(f, "  Port %d %s\n", i,
 499                         p->is_directed ? " (SingleCons)" : "");
 500                 fprintf(f, "\trx   %"PRIu64"\tdrop %"PRIu64"\ttx   %"PRIu64
 501                         "\t%sinflight %d%s\n", sw->ports[i].stats.rx_pkts,
 502                         sw->ports[i].stats.rx_dropped,
 503                         sw->ports[i].stats.tx_pkts,
 504                         (p->inflights == p->inflight_max) ?
 505                                 COL_RED : COL_RESET,
 506                         sw->ports[i].inflights, COL_RESET);
 507
 508                 fprintf(f, "\tMax New: %u"
 509                         "\tAvg cycles PP: %"PRIu64"\tCredits: %u\n",
 510                         sw->ports[i].inflight_max,
 511                         sw->ports[i].avg_pkt_ticks,
 512                         sw->ports[i].inflight_credits);
 513                 fprintf(f, "\tReceive burst distribution:\n");
 514                 float zp_percent = p->zero_polls * 100.0 / p->total_polls;
 515                 fprintf(f, zp_percent < 10 ? "\t\t0:%.02f%% " : "\t\t0:%.0f%% ",
 516                                 zp_percent);
 517                 for (max = (int)RTE_DIM(p->poll_buckets); max-- > 0;)
 518                         if (p->poll_buckets[max] != 0)
 519                                 break;
 520                 for (j = 0; j <= max; j++) {
 521                         if (p->poll_buckets[j] != 0) {
 522                                 float poll_pc = p->poll_buckets[j] * 100.0 /
 523                                         p->total_polls;
 524                                 fprintf(f, "%u-%u:%.02f%% ",
 525                                         ((j << SW_DEQ_STAT_BUCKET_SHIFT) + 1),
 526                                         ((j+1) << SW_DEQ_STAT_BUCKET_SHIFT),
 527                                         poll_pc);
 528                         }
 529                 }
 530                 fprintf(f, "\n");
 531
 532                 if (p->rx_worker_ring) {
 533                         uint64_t used = rte_event_ring_count(p->rx_worker_ring);
 534                         uint64_t space = rte_event_ring_free_count(
 535                                         p->rx_worker_ring);
 536                         const char *col = (space == 0) ? COL_RED : COL_RESET;
 537                         fprintf(f, "\t%srx ring used: %4"PRIu64"\tfree: %4"
 538                                         PRIu64 COL_RESET"\n", col, used, space);
 539                 } else
 540                         fprintf(f, "\trx ring not initialized.\n");
 541
 542                 if (p->cq_worker_ring) {
 543                         uint64_t used = rte_event_ring_count(p->cq_worker_ring);
 544                         uint64_t space = rte_event_ring_free_count(
 545                                         p->cq_worker_ring);
 546                         const char *col = (space == 0) ? COL_RED : COL_RESET;
 547                         fprintf(f, "\t%scq ring used: %4"PRIu64"\tfree: %4"
 548                                         PRIu64 COL_RESET"\n", col, used, space);
 549                 } else
 550                         fprintf(f, "\tcq ring not initialized.\n");
 551         }
 552
 553         for (i = 0; i < sw->qid_count; i++) {
 554                 const struct sw_qid *qid = &sw->qids[i];
 555                 if (!qid->initialized) {
 556                         fprintf(f, "  %sQueue %d not initialized.%s\n",
 557                                 COL_RED, i, COL_RESET);
 558                         continue;
 559                 }
 560                 int affinities_per_port[SW_PORTS_MAX] = {0};
 561                 uint32_t inflights = 0;
 562
 563                 fprintf(f, "  Queue %d (%s)\n", i, q_type_strings[qid->type]);
 564                 fprintf(f, "\trx   %"PRIu64"\tdrop %"PRIu64"\ttx   %"PRIu64"\n",
 565                         qid->stats.rx_pkts, qid->stats.rx_dropped,
 566                         qid->stats.tx_pkts);
 567                 if (qid->type == RTE_SCHED_TYPE_ORDERED) {
 568                         struct rte_ring *rob_buf_free =
 569                                 qid->reorder_buffer_freelist;
 570                         if (rob_buf_free)
 571                                 fprintf(f, "\tReorder entries in use: %u\n",
 572                                         rte_ring_free_count(rob_buf_free));
 573                         else
 574                                 fprintf(f,
 575                                         "\tReorder buffer not initialized\n");
 576                 }
 577
 578                 uint32_t flow;
 579                 for (flow = 0; flow < RTE_DIM(qid->fids); flow++)
 580                         if (qid->fids[flow].cq != -1) {
 581                                 affinities_per_port[qid->fids[flow].cq]++;
 582                                 inflights += qid->fids[flow].pcount;
 583                         }
 584
 585                 uint32_t port;
 586                 fprintf(f, "\tPer Port Stats:\n");
 587                 for (port = 0; port < sw->port_count; port++) {
 588                         fprintf(f, "\t  Port %d: Pkts: %"PRIu64, port,
 589                                         qid->to_port[port]);
 590                         fprintf(f, "\tFlows: %d\n", affinities_per_port[port]);
 591                 }
 592
 593                 uint32_t iq;
 594                 uint32_t iq_printed = 0;
 595                 for (iq = 0; iq < SW_IQS_MAX; iq++) {
 596                         if (!qid->iq[iq].head) {
 597                                 fprintf(f, "\tiq %d is not initialized.\n", iq);
 598                                 iq_printed = 1;
 599                                 continue;
 600                         }
 601                         uint32_t used = iq_count(&qid->iq[iq]);
 602                         const char *col = COL_RESET;
 603                         if (used > 0) {
 604                                 fprintf(f, "\t%siq %d: Used %d"
 605                                         COL_RESET"\n", col, iq, used);
 606                                 iq_printed = 1;
 607                         }
 608                 }
 609                 if (iq_printed == 0)
 610                         fprintf(f, "\t-- iqs empty --\n");
 611         }
 612 }
 613
 614 static int
 615 sw_start(struct rte_eventdev *dev)
 616 {
 617         unsigned int i, j;
 618         struct sw_evdev *sw = sw_pmd_priv(dev);
 619
 620         rte_service_component_runstate_set(sw->service_id, 1);
 621
 622         /* check a service core is mapped to this service */
 623         if (!rte_service_runstate_get(sw->service_id)) {
 624                 SW_LOG_ERR("Warning: No Service core enabled on service %s\n",
 625                                 sw->service_name);
 626                 return -ENOENT;
 627         }
 628
 629         /* check all ports are set up */
 630         for (i = 0; i < sw->port_count; i++)
 631                 if (sw->ports[i].rx_worker_ring == NULL) {
 632                         SW_LOG_ERR("Port %d not configured\n", i);
 633                         return -ESTALE;
 634                 }
 635
 636         /* check all queues are configured and mapped to ports*/
 637         for (i = 0; i < sw->qid_count; i++)
 638                 if (sw->qids[i].iq[0].head == NULL ||
 639                                 sw->qids[i].cq_num_mapped_cqs == 0) {
 640                         SW_LOG_ERR("Queue %d not configured\n", i);
 641                         return -ENOLINK;
 642                 }
 643
 644         /* build up our prioritized array of qids */
 645         /* We don't use qsort here, as if all/multiple entries have the same
 646          * priority, the result is non-deterministic. From "man 3 qsort":
 647          * "If two members compare as equal, their order in the sorted
 648          * array is undefined."
 649          */
 650         uint32_t qidx = 0;
 651         for (j = 0; j <= RTE_EVENT_DEV_PRIORITY_LOWEST; j++) {
 652                 for (i = 0; i < sw->qid_count; i++) {
 653                         if (sw->qids[i].priority == j) {
 654                                 sw->qids_prioritized[qidx] = &sw->qids[i];
 655                                 qidx++;
 656                         }
 657                 }
 658         }
 659
 660         if (sw_xstats_init(sw) < 0)
 661                 return -EINVAL;
 662
 663         rte_smp_wmb();
 664         sw->started = 1;
 665
 666         return 0;
 667 }
 668
 669 static void
 670 sw_stop(struct rte_eventdev *dev)
 671 {
 672         struct sw_evdev *sw = sw_pmd_priv(dev);
 673         sw_xstats_uninit(sw);
 674         sw->started = 0;
 675         rte_smp_wmb();
 676 }
 677
 678 static int
 679 sw_close(struct rte_eventdev *dev)
 680 {
 681         struct sw_evdev *sw = sw_pmd_priv(dev);
 682         uint32_t i;
 683
 684         for (i = 0; i < sw->qid_count; i++)
 685                 sw_queue_release(dev, i);
 686         sw->qid_count = 0;
 687
 688         for (i = 0; i < sw->port_count; i++)
 689                 sw_port_release(&sw->ports[i]);
 690         sw->port_count = 0;
 691
 692         memset(&sw->stats, 0, sizeof(sw->stats));
 693         sw->sched_called = 0;
 694         sw->sched_no_iq_enqueues = 0;
 695         sw->sched_no_cq_enqueues = 0;
 696         sw->sched_cq_qid_called = 0;
 697
 698         return 0;
 699 }
 700
 701 static int
 702 assign_numa_node(const char *key __rte_unused, const char *value, void *opaque)
 703 {
 704         int *socket_id = opaque;
 705         *socket_id = atoi(value);
 706         if (*socket_id >= RTE_MAX_NUMA_NODES)
 707                 return -1;
 708         return 0;
 709 }
 710
 711 static int
 712 set_sched_quanta(const char *key __rte_unused, const char *value, void *opaque)
 713 {
 714         int *quanta = opaque;
 715         *quanta = atoi(value);
 716         if (*quanta < 0 || *quanta >= 4096)
 717                 return -1;
 718         return 0;
 719 }
 720
 721 static int
 722 set_credit_quanta(const char *key __rte_unused, const char *value, void *opaque)
 723 {
 724         int *credit = opaque;
 725         *credit = atoi(value);
 726         if (*credit < 0 || *credit >= 128)
 727                 return -1;
 728         return 0;
 729 }
 730
 731
 732 static int32_t sw_sched_service_func(void *args)
 733 {
 734         struct rte_eventdev *dev = args;
 735         sw_event_schedule(dev);
 736         return 0;
 737 }
 738
 739 static int
 740 sw_probe(struct rte_vdev_device *vdev)
 741 {
 742         static const struct rte_eventdev_ops evdev_sw_ops = {
 743                         .dev_configure = sw_dev_configure,
 744                         .dev_infos_get = sw_info_get,
 745                         .dev_close = sw_close,
 746                         .dev_start = sw_start,
 747                         .dev_stop = sw_stop,
 748                         .dump = sw_dump,
 749
 750                         .queue_def_conf = sw_queue_def_conf,
 751                         .queue_setup = sw_queue_setup,
 752                         .queue_release = sw_queue_release,
 753                         .port_def_conf = sw_port_def_conf,
 754                         .port_setup = sw_port_setup,
 755                         .port_release = sw_port_release,
 756                         .port_link = sw_port_link,
 757                         .port_unlink = sw_port_unlink,
 758
 759                         .eth_rx_adapter_caps_get = sw_eth_rx_adapter_caps_get,
 760
 761                         .xstats_get = sw_xstats_get,
 762                         .xstats_get_names = sw_xstats_get_names,
 763                         .xstats_get_by_name = sw_xstats_get_by_name,
 764                         .xstats_reset = sw_xstats_reset,
 765         };
 766
 767         static const char *const args[] = {
 768                 NUMA_NODE_ARG,
 769                 SCHED_QUANTA_ARG,
 770                 CREDIT_QUANTA_ARG,
 771                 NULL
 772         };
 773         const char *name;
 774         const char *params;
 775         struct rte_eventdev *dev;
 776         struct sw_evdev *sw;
 777         int socket_id = rte_socket_id();
 778         int sched_quanta  = SW_DEFAULT_SCHED_QUANTA;
 779         int credit_quanta = SW_DEFAULT_CREDIT_QUANTA;
 780
 781         name = rte_vdev_device_name(vdev);
 782         params = rte_vdev_device_args(vdev);
 783         if (params != NULL && params[0] != '\0') {
 784                 struct rte_kvargs *kvlist = rte_kvargs_parse(params, args);
 785
 786                 if (!kvlist) {
 787                         SW_LOG_INFO(
 788                                 "Ignoring unsupported parameters when creating device '%s'\n",
 789                                 name);
 790                 } else {
 791                         int ret = rte_kvargs_process(kvlist, NUMA_NODE_ARG,
 792                                         assign_numa_node, &socket_id);
 793                         if (ret != 0) {
 794                                 SW_LOG_ERR(
 795                                         "%s: Error parsing numa node parameter",
 796                                         name);
 797                                 rte_kvargs_free(kvlist);
 798                                 return ret;
 799                         }
 800
 801                         ret = rte_kvargs_process(kvlist, SCHED_QUANTA_ARG,
 802                                         set_sched_quanta, &sched_quanta);
 803                         if (ret != 0) {
 804                                 SW_LOG_ERR(
 805                                         "%s: Error parsing sched quanta parameter",
 806                                         name);
 807                                 rte_kvargs_free(kvlist);
 808                                 return ret;
 809                         }
 810
 811                         ret = rte_kvargs_process(kvlist, CREDIT_QUANTA_ARG,
 812                                         set_credit_quanta, &credit_quanta);
 813                         if (ret != 0) {
 814                                 SW_LOG_ERR(
 815                                         "%s: Error parsing credit quanta parameter",
 816                                         name);
 817                                 rte_kvargs_free(kvlist);
 818                                 return ret;
 819                         }
 820
 821                         rte_kvargs_free(kvlist);
 822                 }
 823         }
 824
 825         SW_LOG_INFO(
 826                         "Creating eventdev sw device %s, numa_node=%d, sched_quanta=%d, credit_quanta=%d\n",
 827                         name, socket_id, sched_quanta, credit_quanta);
 828
 829         dev = rte_event_pmd_vdev_init(name,
 830                         sizeof(struct sw_evdev), socket_id);
 831         if (dev == NULL) {
 832                 SW_LOG_ERR("eventdev vdev init() failed");
 833                 return -EFAULT;
 834         }
 835         dev->dev_ops = &evdev_sw_ops;
 836         dev->enqueue = sw_event_enqueue;
 837         dev->enqueue_burst = sw_event_enqueue_burst;
 838         dev->enqueue_new_burst = sw_event_enqueue_burst;
 839         dev->enqueue_forward_burst = sw_event_enqueue_burst;
 840         dev->dequeue = sw_event_dequeue;
 841         dev->dequeue_burst = sw_event_dequeue_burst;
 842
 843         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 844                 return 0;
 845
 846         sw = dev->data->dev_private;
 847         sw->data = dev->data;
 848
 849         /* copy values passed from vdev command line to instance */
 850         sw->credit_update_quanta = credit_quanta;
 851         sw->sched_quanta = sched_quanta;
 852
 853         /* register service with EAL */
 854         struct rte_service_spec service;
 855         memset(&service, 0, sizeof(struct rte_service_spec));
 856         snprintf(service.name, sizeof(service.name), "%s_service", name);
 857         snprintf(sw->service_name, sizeof(sw->service_name), "%s_service",
 858                         name);
 859         service.socket_id = socket_id;
 860         service.callback = sw_sched_service_func;
 861         service.callback_userdata = (void *)dev;
 862
 863         int32_t ret = rte_service_component_register(&service, &sw->service_id);
 864         if (ret) {
 865                 SW_LOG_ERR("service register() failed");
 866                 return -ENOEXEC;
 867         }
 868
 869         dev->data->service_inited = 1;
 870         dev->data->service_id = sw->service_id;
 871
 872         return 0;
 873 }
 874
 875 static int
 876 sw_remove(struct rte_vdev_device *vdev)
 877 {
 878         const char *name;
 879
 880         name = rte_vdev_device_name(vdev);
 881         if (name == NULL)
 882                 return -EINVAL;
 883
 884         SW_LOG_INFO("Closing eventdev sw device %s\n", name);
 885
 886         return rte_event_pmd_vdev_uninit(name);
 887 }
 888
 889 static struct rte_vdev_driver evdev_sw_pmd_drv = {
 890         .probe = sw_probe,
 891         .remove = sw_remove
 892 };
 893
 894 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_SW_PMD, evdev_sw_pmd_drv);
 895 RTE_PMD_REGISTER_PARAM_STRING(event_sw, NUMA_NODE_ARG "=<int> "
 896                 SCHED_QUANTA_ARG "=<int>" CREDIT_QUANTA_ARG "=<int>");