drivers/crypto/scheduler/scheduler_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 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 #include <rte_common.h>
  33 #include <rte_hexdump.h>
  34 #include <rte_cryptodev.h>
  35 #include <rte_cryptodev_pmd.h>
  36 #include <rte_vdev.h>
  37 #include <rte_malloc.h>
  38 #include <rte_cpuflags.h>
  39 #include <rte_reorder.h>
  40
  41 #include "rte_cryptodev_scheduler.h"
  42 #include "scheduler_pmd_private.h"
  43
  44 struct scheduler_init_params {
  45         struct rte_crypto_vdev_init_params def_p;
  46         uint32_t nb_slaves;
  47         enum rte_cryptodev_scheduler_mode mode;
  48         uint32_t enable_ordering;
  49         char slave_names[RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES]
  50                         [RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN];
  51 };
  52
  53 #define RTE_CRYPTODEV_VDEV_NAME                 ("name")
  54 #define RTE_CRYPTODEV_VDEV_SLAVE                ("slave")
  55 #define RTE_CRYPTODEV_VDEV_MODE                 ("mode")
  56 #define RTE_CRYPTODEV_VDEV_ORDERING             ("ordering")
  57 #define RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG        ("max_nb_queue_pairs")
  58 #define RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG      ("max_nb_sessions")
  59 #define RTE_CRYPTODEV_VDEV_SOCKET_ID            ("socket_id")
  60
  61 const char *scheduler_valid_params[] = {
  62         RTE_CRYPTODEV_VDEV_NAME,
  63         RTE_CRYPTODEV_VDEV_SLAVE,
  64         RTE_CRYPTODEV_VDEV_MODE,
  65         RTE_CRYPTODEV_VDEV_ORDERING,
  66         RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG,
  67         RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG,
  68         RTE_CRYPTODEV_VDEV_SOCKET_ID
  69 };
  70
  71 struct scheduler_parse_map {
  72         const char *name;
  73         uint32_t val;
  74 };
  75
  76 const struct scheduler_parse_map scheduler_mode_map[] = {
  77         {RTE_STR(SCHEDULER_MODE_NAME_ROUND_ROBIN),
  78                         CDEV_SCHED_MODE_ROUNDROBIN},
  79         {RTE_STR(SCHEDULER_MODE_NAME_PKT_SIZE_DISTR),
  80                         CDEV_SCHED_MODE_PKT_SIZE_DISTR},
  81         {RTE_STR(SCHEDULER_MODE_NAME_FAIL_OVER),
  82                         CDEV_SCHED_MODE_FAILOVER}
  83 };
  84
  85 const struct scheduler_parse_map scheduler_ordering_map[] = {
  86                 {"enable", 1},
  87                 {"disable", 0}
  88 };
  89
  90 static int
  91 cryptodev_scheduler_create(const char *name,
  92         struct scheduler_init_params *init_params)
  93 {
  94         struct rte_cryptodev *dev;
  95         struct scheduler_ctx *sched_ctx;
  96         uint32_t i;
  97         int ret;
  98
  99         if (init_params->def_p.name[0] == '\0')
 100                 snprintf(init_params->def_p.name,
 101                                 sizeof(init_params->def_p.name),
 102                                 "%s", name);
 103
 104         dev = rte_cryptodev_pmd_virtual_dev_init(init_params->def_p.name,
 105                         sizeof(struct scheduler_ctx),
 106                         init_params->def_p.socket_id);
 107         if (dev == NULL) {
 108                 CS_LOG_ERR("driver %s: failed to create cryptodev vdev",
 109                         name);
 110                 return -EFAULT;
 111         }
 112
 113         dev->dev_type = RTE_CRYPTODEV_SCHEDULER_PMD;
 114         dev->dev_ops = rte_crypto_scheduler_pmd_ops;
 115
 116         sched_ctx = dev->data->dev_private;
 117         sched_ctx->max_nb_queue_pairs =
 118                         init_params->def_p.max_nb_queue_pairs;
 119
 120         if (init_params->mode > CDEV_SCHED_MODE_USERDEFINED &&
 121                         init_params->mode < CDEV_SCHED_MODE_COUNT) {
 122                 ret = rte_cryptodev_scheduler_mode_set(dev->data->dev_id,
 123                         init_params->mode);
 124                 if (ret < 0) {
 125                         rte_cryptodev_pmd_release_device(dev);
 126                         return ret;
 127                 }
 128
 129                 for (i = 0; i < RTE_DIM(scheduler_mode_map); i++) {
 130                         if (scheduler_mode_map[i].val != sched_ctx->mode)
 131                                 continue;
 132
 133                         RTE_LOG(INFO, PMD, "  Scheduling mode = %s\n",
 134                                         scheduler_mode_map[i].name);
 135                         break;
 136                 }
 137         }
 138
 139         sched_ctx->reordering_enabled = init_params->enable_ordering;
 140
 141         for (i = 0; i < RTE_DIM(scheduler_ordering_map); i++) {
 142                 if (scheduler_ordering_map[i].val !=
 143                                 sched_ctx->reordering_enabled)
 144                         continue;
 145
 146                 RTE_LOG(INFO, PMD, "  Packet ordering = %s\n",
 147                                 scheduler_ordering_map[i].name);
 148
 149                 break;
 150         }
 151
 152         for (i = 0; i < init_params->nb_slaves; i++) {
 153                 sched_ctx->init_slave_names[sched_ctx->nb_init_slaves] =
 154                         rte_zmalloc_socket(
 155                                 NULL,
 156                                 RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN, 0,
 157                                 SOCKET_ID_ANY);
 158
 159                 if (!sched_ctx->init_slave_names[
 160                                 sched_ctx->nb_init_slaves]) {
 161                         CS_LOG_ERR("driver %s: Insufficient memory",
 162                                         name);
 163                         return -ENOMEM;
 164                 }
 165
 166                 strncpy(sched_ctx->init_slave_names[
 167                                         sched_ctx->nb_init_slaves],
 168                                 init_params->slave_names[i],
 169                                 RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN - 1);
 170
 171                 sched_ctx->nb_init_slaves++;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static int
 178 cryptodev_scheduler_remove(struct rte_vdev_device *vdev)
 179 {
 180         const char *name;
 181         struct rte_cryptodev *dev;
 182         struct scheduler_ctx *sched_ctx;
 183
 184         if (vdev == NULL)
 185                 return -EINVAL;
 186
 187         name = rte_vdev_device_name(vdev);
 188         dev = rte_cryptodev_pmd_get_named_dev(name);
 189         if (dev == NULL)
 190                 return -EINVAL;
 191
 192         sched_ctx = dev->data->dev_private;
 193
 194         if (sched_ctx->nb_slaves) {
 195                 uint32_t i;
 196
 197                 for (i = 0; i < sched_ctx->nb_slaves; i++)
 198                         rte_cryptodev_scheduler_slave_detach(dev->data->dev_id,
 199                                         sched_ctx->slaves[i].dev_id);
 200         }
 201
 202         RTE_LOG(INFO, PMD, "Closing Crypto Scheduler device %s on numa "
 203                 "socket %u\n", name, rte_socket_id());
 204
 205         return 0;
 206 }
 207
 208 static uint8_t
 209 number_of_sockets(void)
 210 {
 211         int sockets = 0;
 212         int i;
 213         const struct rte_memseg *ms = rte_eal_get_physmem_layout();
 214
 215         for (i = 0; ((i < RTE_MAX_MEMSEG) && (ms[i].addr != NULL)); i++) {
 216                 if (sockets < ms[i].socket_id)
 217                         sockets = ms[i].socket_id;
 218         }
 219
 220         /* Number of sockets = maximum socket_id + 1 */
 221         return ++sockets;
 222 }
 223
 224 /** Parse integer from integer argument */
 225 static int
 226 parse_integer_arg(const char *key __rte_unused,
 227                 const char *value, void *extra_args)
 228 {
 229         int *i = (int *) extra_args;
 230
 231         *i = atoi(value);
 232         if (*i < 0) {
 233                 CS_LOG_ERR("Argument has to be positive.\n");
 234                 return -EINVAL;
 235         }
 236
 237         return 0;
 238 }
 239
 240 /** Parse name */
 241 static int
 242 parse_name_arg(const char *key __rte_unused,
 243                 const char *value, void *extra_args)
 244 {
 245         struct rte_crypto_vdev_init_params *params = extra_args;
 246
 247         if (strlen(value) >= RTE_CRYPTODEV_NAME_MAX_LEN - 1) {
 248                 CS_LOG_ERR("Invalid name %s, should be less than "
 249                                 "%u bytes.\n", value,
 250                                 RTE_CRYPTODEV_NAME_MAX_LEN - 1);
 251                 return -EINVAL;
 252         }
 253
 254         strncpy(params->name, value, RTE_CRYPTODEV_NAME_MAX_LEN);
 255
 256         return 0;
 257 }
 258
 259 /** Parse slave */
 260 static int
 261 parse_slave_arg(const char *key __rte_unused,
 262                 const char *value, void *extra_args)
 263 {
 264         struct scheduler_init_params *param = extra_args;
 265
 266         if (param->nb_slaves >= RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES - 1) {
 267                 CS_LOG_ERR("Too many slaves.\n");
 268                 return -ENOMEM;
 269         }
 270
 271         strncpy(param->slave_names[param->nb_slaves++], value,
 272                         RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN - 1);
 273
 274         return 0;
 275 }
 276
 277 static int
 278 parse_mode_arg(const char *key __rte_unused,
 279                 const char *value, void *extra_args)
 280 {
 281         struct scheduler_init_params *param = extra_args;
 282         uint32_t i;
 283
 284         for (i = 0; i < RTE_DIM(scheduler_mode_map); i++) {
 285                 if (strcmp(value, scheduler_mode_map[i].name) == 0) {
 286                         param->mode = (enum rte_cryptodev_scheduler_mode)
 287                                         scheduler_mode_map[i].val;
 288                         break;
 289                 }
 290         }
 291
 292         if (i == RTE_DIM(scheduler_mode_map)) {
 293                 CS_LOG_ERR("Unrecognized input.\n");
 294                 return -EINVAL;
 295         }
 296
 297         return 0;
 298 }
 299
 300 static int
 301 parse_ordering_arg(const char *key __rte_unused,
 302                 const char *value, void *extra_args)
 303 {
 304         struct scheduler_init_params *param = extra_args;
 305         uint32_t i;
 306
 307         for (i = 0; i < RTE_DIM(scheduler_ordering_map); i++) {
 308                 if (strcmp(value, scheduler_ordering_map[i].name) == 0) {
 309                         param->enable_ordering =
 310                                         scheduler_ordering_map[i].val;
 311                         break;
 312                 }
 313         }
 314
 315         if (i == RTE_DIM(scheduler_ordering_map)) {
 316                 CS_LOG_ERR("Unrecognized input.\n");
 317                 return -EINVAL;
 318         }
 319
 320         return 0;
 321 }
 322
 323 static int
 324 scheduler_parse_init_params(struct scheduler_init_params *params,
 325                 const char *input_args)
 326 {
 327         struct rte_kvargs *kvlist = NULL;
 328         int ret = 0;
 329
 330         if (params == NULL)
 331                 return -EINVAL;
 332
 333         if (input_args) {
 334                 kvlist = rte_kvargs_parse(input_args,
 335                                 scheduler_valid_params);
 336                 if (kvlist == NULL)
 337                         return -1;
 338
 339                 ret = rte_kvargs_process(kvlist,
 340                                 RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG,
 341                                 &parse_integer_arg,
 342                                 &params->def_p.max_nb_queue_pairs);
 343                 if (ret < 0)
 344                         goto free_kvlist;
 345
 346                 ret = rte_kvargs_process(kvlist,
 347                                 RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG,
 348                                 &parse_integer_arg,
 349                                 &params->def_p.max_nb_sessions);
 350                 if (ret < 0)
 351                         goto free_kvlist;
 352
 353                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_SOCKET_ID,
 354                                 &parse_integer_arg,
 355                                 &params->def_p.socket_id);
 356                 if (ret < 0)
 357                         goto free_kvlist;
 358
 359                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_NAME,
 360                                 &parse_name_arg,
 361                                 &params->def_p);
 362                 if (ret < 0)
 363                         goto free_kvlist;
 364
 365                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_SLAVE,
 366                                 &parse_slave_arg, params);
 367                 if (ret < 0)
 368                         goto free_kvlist;
 369
 370                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_MODE,
 371                                 &parse_mode_arg, params);
 372                 if (ret < 0)
 373                         goto free_kvlist;
 374
 375                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_ORDERING,
 376                                 &parse_ordering_arg, params);
 377                 if (ret < 0)
 378                         goto free_kvlist;
 379
 380                 if (params->def_p.socket_id >= number_of_sockets()) {
 381                         CDEV_LOG_ERR("Invalid socket id specified to create "
 382                                 "the virtual crypto device on");
 383                         goto free_kvlist;
 384                 }
 385         }
 386
 387 free_kvlist:
 388         rte_kvargs_free(kvlist);
 389         return ret;
 390 }
 391
 392 static int
 393 cryptodev_scheduler_probe(struct rte_vdev_device *vdev)
 394 {
 395         struct scheduler_init_params init_params = {
 396                 .def_p = {
 397                         RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 398                         RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 399                         rte_socket_id(),
 400                         ""
 401                 },
 402                 .nb_slaves = 0,
 403                 .mode = CDEV_SCHED_MODE_NOT_SET,
 404                 .enable_ordering = 0,
 405                 .slave_names = { {0} }
 406         };
 407         const char *name;
 408
 409         name = rte_vdev_device_name(vdev);
 410         if (name == NULL)
 411                 return -EINVAL;
 412
 413         scheduler_parse_init_params(&init_params,
 414                                     rte_vdev_device_args(vdev));
 415
 416         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n",
 417                         name,
 418                         init_params.def_p.socket_id);
 419         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 420                         init_params.def_p.max_nb_queue_pairs);
 421         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 422                         init_params.def_p.max_nb_sessions);
 423         if (init_params.def_p.name[0] != '\0')
 424                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 425                         init_params.def_p.name);
 426
 427         return cryptodev_scheduler_create(name,
 428                                         &init_params);
 429 }
 430
 431 static struct rte_vdev_driver cryptodev_scheduler_pmd_drv = {
 432         .probe = cryptodev_scheduler_probe,
 433         .remove = cryptodev_scheduler_remove
 434 };
 435
 436 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SCHEDULER_PMD,
 437         cryptodev_scheduler_pmd_drv);
 438 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SCHEDULER_PMD,
 439         "max_nb_queue_pairs=<int> "
 440         "max_nb_sessions=<int> "
 441         "socket_id=<int> "
 442         "slave=<name>");