drivers/event/sw/sw_evdev.c

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