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