ceph/src/seastar/dpdk/drivers/crypto/scheduler/scheduler_pmd_ops.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Intel Corporation
   3  */
   4 #include <string.h>
   5
   6 #include <rte_common.h>
   7 #include <rte_malloc.h>
   8 #include <rte_dev.h>
   9 #include <rte_cryptodev.h>
  10 #include <rte_cryptodev_pmd.h>
  11 #include <rte_reorder.h>
  12
  13 #include "scheduler_pmd_private.h"
  14
  15 /** attaching the slaves predefined by scheduler's EAL options */
  16 static int
  17 scheduler_attach_init_slave(struct rte_cryptodev *dev)
  18 {
  19         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
  20         uint8_t scheduler_id = dev->data->dev_id;
  21         int i;
  22
  23         for (i = sched_ctx->nb_init_slaves - 1; i >= 0; i--) {
  24                 const char *dev_name = sched_ctx->init_slave_names[i];
  25                 struct rte_cryptodev *slave_dev =
  26                                 rte_cryptodev_pmd_get_named_dev(dev_name);
  27                 int status;
  28
  29                 if (!slave_dev) {
  30                         CR_SCHED_LOG(ERR, "Failed to locate slave dev %s",
  31                                         dev_name);
  32                         return -EINVAL;
  33                 }
  34
  35                 status = rte_cryptodev_scheduler_slave_attach(
  36                                 scheduler_id, slave_dev->data->dev_id);
  37
  38                 if (status < 0) {
  39                         CR_SCHED_LOG(ERR, "Failed to attach slave cryptodev %u",
  40                                         slave_dev->data->dev_id);
  41                         return status;
  42                 }
  43
  44                 CR_SCHED_LOG(INFO, "Scheduler %s attached slave %s",
  45                                 dev->data->name,
  46                                 sched_ctx->init_slave_names[i]);
  47
  48                 rte_free(sched_ctx->init_slave_names[i]);
  49                 sched_ctx->init_slave_names[i] = NULL;
  50
  51                 sched_ctx->nb_init_slaves -= 1;
  52         }
  53
  54         return 0;
  55 }
  56 /** Configure device */
  57 static int
  58 scheduler_pmd_config(struct rte_cryptodev *dev,
  59                 struct rte_cryptodev_config *config)
  60 {
  61         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
  62         uint32_t i;
  63         int ret;
  64
  65         /* although scheduler_attach_init_slave presents multiple times,
  66          * there will be only 1 meaningful execution.
  67          */
  68         ret = scheduler_attach_init_slave(dev);
  69         if (ret < 0)
  70                 return ret;
  71
  72         for (i = 0; i < sched_ctx->nb_slaves; i++) {
  73                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
  74
  75                 ret = rte_cryptodev_configure(slave_dev_id, config);
  76                 if (ret < 0)
  77                         break;
  78         }
  79
  80         return ret;
  81 }
  82
  83 static int
  84 update_order_ring(struct rte_cryptodev *dev, uint16_t qp_id)
  85 {
  86         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
  87         struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
  88
  89         if (sched_ctx->reordering_enabled) {
  90                 char order_ring_name[RTE_CRYPTODEV_NAME_MAX_LEN];
  91                 uint32_t buff_size = rte_align32pow2(
  92                         sched_ctx->nb_slaves * PER_SLAVE_BUFF_SIZE);
  93
  94                 if (qp_ctx->order_ring) {
  95                         rte_ring_free(qp_ctx->order_ring);
  96                         qp_ctx->order_ring = NULL;
  97                 }
  98
  99                 if (!buff_size)
 100                         return 0;
 101
 102                 if (snprintf(order_ring_name, RTE_CRYPTODEV_NAME_MAX_LEN,
 103                         "%s_rb_%u_%u", RTE_STR(CRYPTODEV_NAME_SCHEDULER_PMD),
 104                         dev->data->dev_id, qp_id) < 0) {
 105                         CR_SCHED_LOG(ERR, "failed to create unique reorder buffer"
 106                                         "name");
 107                         return -ENOMEM;
 108                 }
 109
 110                 qp_ctx->order_ring = rte_ring_create(order_ring_name,
 111                                 buff_size, rte_socket_id(),
 112                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 113                 if (!qp_ctx->order_ring) {
 114                         CR_SCHED_LOG(ERR, "failed to create order ring");
 115                         return -ENOMEM;
 116                 }
 117         } else {
 118                 if (qp_ctx->order_ring) {
 119                         rte_ring_free(qp_ctx->order_ring);
 120                         qp_ctx->order_ring = NULL;
 121                 }
 122         }
 123
 124         return 0;
 125 }
 126
 127 /** Start device */
 128 static int
 129 scheduler_pmd_start(struct rte_cryptodev *dev)
 130 {
 131         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 132         uint32_t i;
 133         int ret;
 134
 135         if (dev->data->dev_started)
 136                 return 0;
 137
 138         /* although scheduler_attach_init_slave presents multiple times,
 139          * there will be only 1 meaningful execution.
 140          */
 141         ret = scheduler_attach_init_slave(dev);
 142         if (ret < 0)
 143                 return ret;
 144
 145         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
 146                 ret = update_order_ring(dev, i);
 147                 if (ret < 0) {
 148                         CR_SCHED_LOG(ERR, "Failed to update reorder buffer");
 149                         return ret;
 150                 }
 151         }
 152
 153         if (sched_ctx->mode == CDEV_SCHED_MODE_NOT_SET) {
 154                 CR_SCHED_LOG(ERR, "Scheduler mode is not set");
 155                 return -1;
 156         }
 157
 158         if (!sched_ctx->nb_slaves) {
 159                 CR_SCHED_LOG(ERR, "No slave in the scheduler");
 160                 return -1;
 161         }
 162
 163         RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.slave_attach, -ENOTSUP);
 164
 165         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 166                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 167
 168                 if ((*sched_ctx->ops.slave_attach)(dev, slave_dev_id) < 0) {
 169                         CR_SCHED_LOG(ERR, "Failed to attach slave");
 170                         return -ENOTSUP;
 171                 }
 172         }
 173
 174         RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.scheduler_start, -ENOTSUP);
 175
 176         if ((*sched_ctx->ops.scheduler_start)(dev) < 0) {
 177                 CR_SCHED_LOG(ERR, "Scheduler start failed");
 178                 return -1;
 179         }
 180
 181         /* start all slaves */
 182         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 183                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 184                 struct rte_cryptodev *slave_dev =
 185                                 rte_cryptodev_pmd_get_dev(slave_dev_id);
 186
 187                 ret = (*slave_dev->dev_ops->dev_start)(slave_dev);
 188                 if (ret < 0) {
 189                         CR_SCHED_LOG(ERR, "Failed to start slave dev %u",
 190                                         slave_dev_id);
 191                         return ret;
 192                 }
 193         }
 194
 195         return 0;
 196 }
 197
 198 /** Stop device */
 199 static void
 200 scheduler_pmd_stop(struct rte_cryptodev *dev)
 201 {
 202         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 203         uint32_t i;
 204
 205         if (!dev->data->dev_started)
 206                 return;
 207
 208         /* stop all slaves first */
 209         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 210                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 211                 struct rte_cryptodev *slave_dev =
 212                                 rte_cryptodev_pmd_get_dev(slave_dev_id);
 213
 214                 (*slave_dev->dev_ops->dev_stop)(slave_dev);
 215         }
 216
 217         if (*sched_ctx->ops.scheduler_stop)
 218                 (*sched_ctx->ops.scheduler_stop)(dev);
 219
 220         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 221                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 222
 223                 if (*sched_ctx->ops.slave_detach)
 224                         (*sched_ctx->ops.slave_detach)(dev, slave_dev_id);
 225         }
 226 }
 227
 228 /** Close device */
 229 static int
 230 scheduler_pmd_close(struct rte_cryptodev *dev)
 231 {
 232         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 233         uint32_t i;
 234         int ret;
 235
 236         /* the dev should be stopped before being closed */
 237         if (dev->data->dev_started)
 238                 return -EBUSY;
 239
 240         /* close all slaves first */
 241         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 242                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 243                 struct rte_cryptodev *slave_dev =
 244                                 rte_cryptodev_pmd_get_dev(slave_dev_id);
 245
 246                 ret = (*slave_dev->dev_ops->dev_close)(slave_dev);
 247                 if (ret < 0)
 248                         return ret;
 249         }
 250
 251         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
 252                 struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];
 253
 254                 if (qp_ctx->order_ring) {
 255                         rte_ring_free(qp_ctx->order_ring);
 256                         qp_ctx->order_ring = NULL;
 257                 }
 258
 259                 if (qp_ctx->private_qp_ctx) {
 260                         rte_free(qp_ctx->private_qp_ctx);
 261                         qp_ctx->private_qp_ctx = NULL;
 262                 }
 263         }
 264
 265         if (sched_ctx->private_ctx) {
 266                 rte_free(sched_ctx->private_ctx);
 267                 sched_ctx->private_ctx = NULL;
 268         }
 269
 270         if (sched_ctx->capabilities) {
 271                 rte_free(sched_ctx->capabilities);
 272                 sched_ctx->capabilities = NULL;
 273         }
 274
 275         return 0;
 276 }
 277
 278 /** Get device statistics */
 279 static void
 280 scheduler_pmd_stats_get(struct rte_cryptodev *dev,
 281         struct rte_cryptodev_stats *stats)
 282 {
 283         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 284         uint32_t i;
 285
 286         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 287                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 288                 struct rte_cryptodev *slave_dev =
 289                                 rte_cryptodev_pmd_get_dev(slave_dev_id);
 290                 struct rte_cryptodev_stats slave_stats = {0};
 291
 292                 (*slave_dev->dev_ops->stats_get)(slave_dev, &slave_stats);
 293
 294                 stats->enqueued_count += slave_stats.enqueued_count;
 295                 stats->dequeued_count += slave_stats.dequeued_count;
 296
 297                 stats->enqueue_err_count += slave_stats.enqueue_err_count;
 298                 stats->dequeue_err_count += slave_stats.dequeue_err_count;
 299         }
 300 }
 301
 302 /** Reset device statistics */
 303 static void
 304 scheduler_pmd_stats_reset(struct rte_cryptodev *dev)
 305 {
 306         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 307         uint32_t i;
 308
 309         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 310                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 311                 struct rte_cryptodev *slave_dev =
 312                                 rte_cryptodev_pmd_get_dev(slave_dev_id);
 313
 314                 (*slave_dev->dev_ops->stats_reset)(slave_dev);
 315         }
 316 }
 317
 318 /** Get device info */
 319 static void
 320 scheduler_pmd_info_get(struct rte_cryptodev *dev,
 321                 struct rte_cryptodev_info *dev_info)
 322 {
 323         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 324         uint32_t max_nb_sess = 0;
 325         uint16_t headroom_sz = 0;
 326         uint16_t tailroom_sz = 0;
 327         uint32_t i;
 328
 329         if (!dev_info)
 330                 return;
 331
 332         /* although scheduler_attach_init_slave presents multiple times,
 333          * there will be only 1 meaningful execution.
 334          */
 335         scheduler_attach_init_slave(dev);
 336
 337         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 338                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 339                 struct rte_cryptodev_info slave_info;
 340
 341                 rte_cryptodev_info_get(slave_dev_id, &slave_info);
 342                 uint32_t dev_max_sess = slave_info.sym.max_nb_sessions;
 343                 if (dev_max_sess != 0) {
 344                         if (max_nb_sess == 0 || dev_max_sess < max_nb_sess)
 345                                 max_nb_sess = slave_info.sym.max_nb_sessions;
 346                 }
 347
 348                 /* Get the max headroom requirement among slave PMDs */
 349                 headroom_sz = slave_info.min_mbuf_headroom_req >
 350                                 headroom_sz ?
 351                                 slave_info.min_mbuf_headroom_req :
 352                                 headroom_sz;
 353
 354                 /* Get the max tailroom requirement among slave PMDs */
 355                 tailroom_sz = slave_info.min_mbuf_tailroom_req >
 356                                 tailroom_sz ?
 357                                 slave_info.min_mbuf_tailroom_req :
 358                                 tailroom_sz;
 359         }
 360
 361         dev_info->driver_id = dev->driver_id;
 362         dev_info->feature_flags = dev->feature_flags;
 363         dev_info->capabilities = sched_ctx->capabilities;
 364         dev_info->max_nb_queue_pairs = sched_ctx->max_nb_queue_pairs;
 365         dev_info->min_mbuf_headroom_req = headroom_sz;
 366         dev_info->min_mbuf_tailroom_req = tailroom_sz;
 367         dev_info->sym.max_nb_sessions = max_nb_sess;
 368 }
 369
 370 /** Release queue pair */
 371 static int
 372 scheduler_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
 373 {
 374         struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
 375
 376         if (!qp_ctx)
 377                 return 0;
 378
 379         if (qp_ctx->order_ring)
 380                 rte_ring_free(qp_ctx->order_ring);
 381         if (qp_ctx->private_qp_ctx)
 382                 rte_free(qp_ctx->private_qp_ctx);
 383
 384         rte_free(qp_ctx);
 385         dev->data->queue_pairs[qp_id] = NULL;
 386
 387         return 0;
 388 }
 389
 390 /** Setup a queue pair */
 391 static int
 392 scheduler_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 393         const struct rte_cryptodev_qp_conf *qp_conf, int socket_id)
 394 {
 395         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 396         struct scheduler_qp_ctx *qp_ctx;
 397         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 398         uint32_t i;
 399         int ret;
 400
 401         if (snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN,
 402                         "CRYTO_SCHE PMD %u QP %u",
 403                         dev->data->dev_id, qp_id) < 0) {
 404                 CR_SCHED_LOG(ERR, "Failed to create unique queue pair name");
 405                 return -EFAULT;
 406         }
 407
 408         /* Free memory prior to re-allocation if needed. */
 409         if (dev->data->queue_pairs[qp_id] != NULL)
 410                 scheduler_pmd_qp_release(dev, qp_id);
 411
 412         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 413                 uint8_t slave_id = sched_ctx->slaves[i].dev_id;
 414
 415                 /*
 416                  * All slaves will share the same session mempool
 417                  * for session-less operations, so the objects
 418                  * must be big enough for all the drivers used.
 419                  */
 420                 ret = rte_cryptodev_queue_pair_setup(slave_id, qp_id,
 421                                 qp_conf, socket_id);
 422                 if (ret < 0)
 423                         return ret;
 424         }
 425
 426         /* Allocate the queue pair data structure. */
 427         qp_ctx = rte_zmalloc_socket(name, sizeof(*qp_ctx), RTE_CACHE_LINE_SIZE,
 428                         socket_id);
 429         if (qp_ctx == NULL)
 430                 return -ENOMEM;
 431
 432         /* The actual available object number = nb_descriptors - 1 */
 433         qp_ctx->max_nb_objs = qp_conf->nb_descriptors - 1;
 434
 435         dev->data->queue_pairs[qp_id] = qp_ctx;
 436
 437         /* although scheduler_attach_init_slave presents multiple times,
 438          * there will be only 1 meaningful execution.
 439          */
 440         ret = scheduler_attach_init_slave(dev);
 441         if (ret < 0) {
 442                 CR_SCHED_LOG(ERR, "Failed to attach slave");
 443                 scheduler_pmd_qp_release(dev, qp_id);
 444                 return ret;
 445         }
 446
 447         if (*sched_ctx->ops.config_queue_pair) {
 448                 if ((*sched_ctx->ops.config_queue_pair)(dev, qp_id) < 0) {
 449                         CR_SCHED_LOG(ERR, "Unable to configure queue pair");
 450                         return -1;
 451                 }
 452         }
 453
 454         return 0;
 455 }
 456
 457 /** Return the number of allocated queue pairs */
 458 static uint32_t
 459 scheduler_pmd_qp_count(struct rte_cryptodev *dev)
 460 {
 461         return dev->data->nb_queue_pairs;
 462 }
 463
 464 static uint32_t
 465 scheduler_pmd_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
 466 {
 467         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 468         uint8_t i = 0;
 469         uint32_t max_priv_sess_size = 0;
 470
 471         /* Check what is the maximum private session size for all slaves */
 472         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 473                 uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
 474                 struct rte_cryptodev *dev = &rte_cryptodevs[slave_dev_id];
 475                 uint32_t priv_sess_size = (*dev->dev_ops->sym_session_get_size)(dev);
 476
 477                 if (max_priv_sess_size < priv_sess_size)
 478                         max_priv_sess_size = priv_sess_size;
 479         }
 480
 481         return max_priv_sess_size;
 482 }
 483
 484 static int
 485 scheduler_pmd_sym_session_configure(struct rte_cryptodev *dev,
 486         struct rte_crypto_sym_xform *xform,
 487         struct rte_cryptodev_sym_session *sess,
 488         struct rte_mempool *mempool)
 489 {
 490         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 491         uint32_t i;
 492         int ret;
 493
 494         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 495                 struct scheduler_slave *slave = &sched_ctx->slaves[i];
 496
 497                 ret = rte_cryptodev_sym_session_init(slave->dev_id, sess,
 498                                         xform, mempool);
 499                 if (ret < 0) {
 500                         CR_SCHED_LOG(ERR, "unable to config sym session");
 501                         return ret;
 502                 }
 503         }
 504
 505         return 0;
 506 }
 507
 508 /** Clear the memory of session so it doesn't leave key material behind */
 509 static void
 510 scheduler_pmd_sym_session_clear(struct rte_cryptodev *dev,
 511                 struct rte_cryptodev_sym_session *sess)
 512 {
 513         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
 514         uint32_t i;
 515
 516         /* Clear private data of slaves */
 517         for (i = 0; i < sched_ctx->nb_slaves; i++) {
 518                 struct scheduler_slave *slave = &sched_ctx->slaves[i];
 519
 520                 rte_cryptodev_sym_session_clear(slave->dev_id, sess);
 521         }
 522 }
 523
 524 static struct rte_cryptodev_ops scheduler_pmd_ops = {
 525                 .dev_configure          = scheduler_pmd_config,
 526                 .dev_start              = scheduler_pmd_start,
 527                 .dev_stop               = scheduler_pmd_stop,
 528                 .dev_close              = scheduler_pmd_close,
 529
 530                 .stats_get              = scheduler_pmd_stats_get,
 531                 .stats_reset            = scheduler_pmd_stats_reset,
 532
 533                 .dev_infos_get          = scheduler_pmd_info_get,
 534
 535                 .queue_pair_setup       = scheduler_pmd_qp_setup,
 536                 .queue_pair_release     = scheduler_pmd_qp_release,
 537                 .queue_pair_count       = scheduler_pmd_qp_count,
 538
 539                 .sym_session_get_size   = scheduler_pmd_sym_session_get_size,
 540                 .sym_session_configure  = scheduler_pmd_sym_session_configure,
 541                 .sym_session_clear      = scheduler_pmd_sym_session_clear,
 542 };
 543
 544 struct rte_cryptodev_ops *rte_crypto_scheduler_pmd_ops = &scheduler_pmd_ops;