drivers/crypto/ccp/ccp_pmd_ops.c

   1 /*   SPDX-License-Identifier: BSD-3-Clause
   2  *   Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
   3  */
   4
   5 #include <string.h>
   6
   7 #include <rte_common.h>
   8 #include <rte_cryptodev_pmd.h>
   9 #include <rte_malloc.h>
  10
  11 #include "ccp_pmd_private.h"
  12 #include "ccp_dev.h"
  13 #include "ccp_crypto.h"
  14
  15 static const struct rte_cryptodev_capabilities ccp_pmd_capabilities[] = {
  16         {       /*AES-CMAC */
  17                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  18                 {.sym = {
  19                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  20                         {.auth = {
  21                                  .algo = RTE_CRYPTO_AUTH_AES_CMAC,
  22                                  .block_size = 16,
  23                                  .key_size = {
  24                                          .min = 16,
  25                                          .max = 32,
  26                                          .increment = 8
  27                                  },
  28                                  .digest_size = {
  29                                          .min = 16,
  30                                          .max = 16,
  31                                          .increment = 0
  32                                  },
  33                         }, }
  34                 }, }
  35         },
  36         {       /* AES ECB */
  37                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  38                 {.sym = {
  39                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
  40                         {.cipher = {
  41                                 .algo = RTE_CRYPTO_CIPHER_AES_ECB,
  42                                 .block_size = 16,
  43                                 .key_size = {
  44                                    .min = 16,
  45                                    .max = 32,
  46                                    .increment = 8
  47                                 },
  48                                 .iv_size = {
  49                                    .min = 0,
  50                                    .max = 0,
  51                                    .increment = 0
  52                                 }
  53                         }, }
  54                 }, }
  55         },
  56         {       /* AES CBC */
  57                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  58                 {.sym = {
  59                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
  60                         {.cipher = {
  61                                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  62                                 .block_size = 16,
  63                                 .key_size = {
  64                                         .min = 16,
  65                                         .max = 32,
  66                                         .increment = 8
  67                                 },
  68                                 .iv_size = {
  69                                         .min = 16,
  70                                         .max = 16,
  71                                         .increment = 0
  72                                 }
  73                         }, }
  74                 }, }
  75         },
  76         {       /* AES CTR */
  77                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  78                 {.sym = {
  79                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
  80                         {.cipher = {
  81                                 .algo = RTE_CRYPTO_CIPHER_AES_CTR,
  82                                 .block_size = 16,
  83                                 .key_size = {
  84                                         .min = 16,
  85                                         .max = 32,
  86                                         .increment = 8
  87                                 },
  88                                 .iv_size = {
  89                                         .min = 16,
  90                                         .max = 16,
  91                                         .increment = 0
  92                                 }
  93                         }, }
  94                 }, }
  95         },
  96         {       /* 3DES CBC */
  97                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  98                 {.sym = {
  99                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 100                         {.cipher = {
 101                                 .algo = RTE_CRYPTO_CIPHER_3DES_CBC,
 102                                 .block_size = 8,
 103                                 .key_size = {
 104                                         .min = 16,
 105                                         .max = 24,
 106                                         .increment = 8
 107                                 },
 108                                 .iv_size = {
 109                                         .min = 8,
 110                                         .max = 8,
 111                                         .increment = 0
 112                                 }
 113                         }, }
 114                 }, }
 115         },
 116         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 117 };
 118
 119 static int
 120 ccp_pmd_config(struct rte_cryptodev *dev __rte_unused,
 121                struct rte_cryptodev_config *config __rte_unused)
 122 {
 123         return 0;
 124 }
 125
 126 static int
 127 ccp_pmd_start(struct rte_cryptodev *dev)
 128 {
 129         return ccp_dev_start(dev);
 130 }
 131
 132 static void
 133 ccp_pmd_stop(struct rte_cryptodev *dev __rte_unused)
 134 {
 135
 136 }
 137
 138 static int
 139 ccp_pmd_close(struct rte_cryptodev *dev __rte_unused)
 140 {
 141         return 0;
 142 }
 143
 144 static void
 145 ccp_pmd_stats_get(struct rte_cryptodev *dev,
 146                   struct rte_cryptodev_stats *stats)
 147 {
 148         int qp_id;
 149
 150         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
 151                 struct ccp_qp *qp = dev->data->queue_pairs[qp_id];
 152
 153                 stats->enqueued_count += qp->qp_stats.enqueued_count;
 154                 stats->dequeued_count += qp->qp_stats.dequeued_count;
 155
 156                 stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
 157                 stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
 158         }
 159
 160 }
 161
 162 static void
 163 ccp_pmd_stats_reset(struct rte_cryptodev *dev)
 164 {
 165         int qp_id;
 166
 167         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
 168                 struct ccp_qp *qp = dev->data->queue_pairs[qp_id];
 169
 170                 memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
 171         }
 172 }
 173
 174 static void
 175 ccp_pmd_info_get(struct rte_cryptodev *dev,
 176                  struct rte_cryptodev_info *dev_info)
 177 {
 178         struct ccp_private *internals = dev->data->dev_private;
 179
 180         if (dev_info != NULL) {
 181                 dev_info->driver_id = dev->driver_id;
 182                 dev_info->feature_flags = dev->feature_flags;
 183                 dev_info->capabilities = ccp_pmd_capabilities;
 184                 dev_info->max_nb_queue_pairs = internals->max_nb_qpairs;
 185                 dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
 186         }
 187 }
 188
 189 static int
 190 ccp_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
 191 {
 192         struct ccp_qp *qp;
 193
 194         if (dev->data->queue_pairs[qp_id] != NULL) {
 195                 qp = (struct ccp_qp *)dev->data->queue_pairs[qp_id];
 196                 rte_ring_free(qp->processed_pkts);
 197                 rte_mempool_free(qp->batch_mp);
 198                 rte_free(qp);
 199                 dev->data->queue_pairs[qp_id] = NULL;
 200         }
 201         return 0;
 202 }
 203
 204 static int
 205 ccp_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
 206                 struct ccp_qp *qp)
 207 {
 208         unsigned int n = snprintf(qp->name, sizeof(qp->name),
 209                         "ccp_pmd_%u_qp_%u",
 210                         dev->data->dev_id, qp->id);
 211
 212         if (n > sizeof(qp->name))
 213                 return -1;
 214
 215         return 0;
 216 }
 217
 218 static struct rte_ring *
 219 ccp_pmd_qp_create_batch_info_ring(struct ccp_qp *qp,
 220                                   unsigned int ring_size, int socket_id)
 221 {
 222         struct rte_ring *r;
 223
 224         r = rte_ring_lookup(qp->name);
 225         if (r) {
 226                 if (r->size >= ring_size) {
 227                         CCP_LOG_INFO(
 228                                 "Reusing ring %s for processed packets",
 229                                 qp->name);
 230                         return r;
 231                 }
 232                 CCP_LOG_INFO(
 233                         "Unable to reuse ring %s for processed packets",
 234                          qp->name);
 235                 return NULL;
 236         }
 237
 238         return rte_ring_create(qp->name, ring_size, socket_id,
 239                         RING_F_SP_ENQ | RING_F_SC_DEQ);
 240 }
 241
 242 static int
 243 ccp_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 244                  const struct rte_cryptodev_qp_conf *qp_conf,
 245                  int socket_id, struct rte_mempool *session_pool)
 246 {
 247         struct ccp_private *internals = dev->data->dev_private;
 248         struct ccp_qp *qp;
 249         int retval = 0;
 250
 251         if (qp_id >= internals->max_nb_qpairs) {
 252                 CCP_LOG_ERR("Invalid qp_id %u, should be less than %u",
 253                             qp_id, internals->max_nb_qpairs);
 254                 return (-EINVAL);
 255         }
 256
 257         /* Free memory prior to re-allocation if needed. */
 258         if (dev->data->queue_pairs[qp_id] != NULL)
 259                 ccp_pmd_qp_release(dev, qp_id);
 260
 261         /* Allocate the queue pair data structure. */
 262         qp = rte_zmalloc_socket("CCP Crypto PMD Queue Pair", sizeof(*qp),
 263                                         RTE_CACHE_LINE_SIZE, socket_id);
 264         if (qp == NULL) {
 265                 CCP_LOG_ERR("Failed to allocate queue pair memory");
 266                 return (-ENOMEM);
 267         }
 268
 269         qp->dev = dev;
 270         qp->id = qp_id;
 271         dev->data->queue_pairs[qp_id] = qp;
 272
 273         retval = ccp_pmd_qp_set_unique_name(dev, qp);
 274         if (retval) {
 275                 CCP_LOG_ERR("Failed to create unique name for ccp qp");
 276                 goto qp_setup_cleanup;
 277         }
 278
 279         qp->processed_pkts = ccp_pmd_qp_create_batch_info_ring(qp,
 280                         qp_conf->nb_descriptors, socket_id);
 281         if (qp->processed_pkts == NULL) {
 282                 CCP_LOG_ERR("Failed to create batch info ring");
 283                 goto qp_setup_cleanup;
 284         }
 285
 286         qp->sess_mp = session_pool;
 287
 288         /* mempool for batch info */
 289         qp->batch_mp = rte_mempool_create(
 290                                 qp->name,
 291                                 qp_conf->nb_descriptors,
 292                                 sizeof(struct ccp_batch_info),
 293                                 RTE_CACHE_LINE_SIZE,
 294                                 0, NULL, NULL, NULL, NULL,
 295                                 SOCKET_ID_ANY, 0);
 296         if (qp->batch_mp == NULL)
 297                 goto qp_setup_cleanup;
 298         memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
 299         return 0;
 300
 301 qp_setup_cleanup:
 302         dev->data->queue_pairs[qp_id] = NULL;
 303         if (qp)
 304                 rte_free(qp);
 305         return -1;
 306 }
 307
 308 static int
 309 ccp_pmd_qp_start(struct rte_cryptodev *dev __rte_unused,
 310                  uint16_t queue_pair_id __rte_unused)
 311 {
 312         return -ENOTSUP;
 313 }
 314
 315 static int
 316 ccp_pmd_qp_stop(struct rte_cryptodev *dev __rte_unused,
 317                 uint16_t queue_pair_id __rte_unused)
 318 {
 319         return -ENOTSUP;
 320 }
 321
 322 static uint32_t
 323 ccp_pmd_qp_count(struct rte_cryptodev *dev)
 324 {
 325         return dev->data->nb_queue_pairs;
 326 }
 327
 328 static unsigned
 329 ccp_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
 330 {
 331         return sizeof(struct ccp_session);
 332 }
 333
 334 static int
 335 ccp_pmd_session_configure(struct rte_cryptodev *dev,
 336                           struct rte_crypto_sym_xform *xform,
 337                           struct rte_cryptodev_sym_session *sess,
 338                           struct rte_mempool *mempool)
 339 {
 340         int ret;
 341         void *sess_private_data;
 342
 343         if (unlikely(sess == NULL || xform == NULL)) {
 344                 CCP_LOG_ERR("Invalid session struct or xform");
 345                 return -ENOMEM;
 346         }
 347
 348         if (rte_mempool_get(mempool, &sess_private_data)) {
 349                 CCP_LOG_ERR("Couldn't get object from session mempool");
 350                 return -ENOMEM;
 351         }
 352         ret = ccp_set_session_parameters(sess_private_data, xform);
 353         if (ret != 0) {
 354                 CCP_LOG_ERR("failed configure session parameters");
 355
 356                 /* Return session to mempool */
 357                 rte_mempool_put(mempool, sess_private_data);
 358                 return ret;
 359         }
 360         set_session_private_data(sess, dev->driver_id,
 361                                  sess_private_data);
 362
 363         return 0;
 364 }
 365
 366 static void
 367 ccp_pmd_session_clear(struct rte_cryptodev *dev,
 368                       struct rte_cryptodev_sym_session *sess)
 369 {
 370         uint8_t index = dev->driver_id;
 371         void *sess_priv = get_session_private_data(sess, index);
 372
 373         if (sess_priv) {
 374                 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
 375
 376                 rte_mempool_put(sess_mp, sess_priv);
 377                 memset(sess_priv, 0, sizeof(struct ccp_session));
 378                 set_session_private_data(sess, index, NULL);
 379         }
 380 }
 381
 382 struct rte_cryptodev_ops ccp_ops = {
 383                 .dev_configure          = ccp_pmd_config,
 384                 .dev_start              = ccp_pmd_start,
 385                 .dev_stop               = ccp_pmd_stop,
 386                 .dev_close              = ccp_pmd_close,
 387
 388                 .stats_get              = ccp_pmd_stats_get,
 389                 .stats_reset            = ccp_pmd_stats_reset,
 390
 391                 .dev_infos_get          = ccp_pmd_info_get,
 392
 393                 .queue_pair_setup       = ccp_pmd_qp_setup,
 394                 .queue_pair_release     = ccp_pmd_qp_release,
 395                 .queue_pair_start       = ccp_pmd_qp_start,
 396                 .queue_pair_stop        = ccp_pmd_qp_stop,
 397                 .queue_pair_count       = ccp_pmd_qp_count,
 398
 399                 .session_get_size       = ccp_pmd_session_get_size,
 400                 .session_configure      = ccp_pmd_session_configure,
 401                 .session_clear          = ccp_pmd_session_clear,
 402 };
 403
 404 struct rte_cryptodev_ops *ccp_pmd_ops = &ccp_ops;