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