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         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  17 };
  18
  19 static int
  20 ccp_pmd_config(struct rte_cryptodev *dev __rte_unused,
  21                struct rte_cryptodev_config *config __rte_unused)
  22 {
  23         return 0;
  24 }
  25
  26 static int
  27 ccp_pmd_start(struct rte_cryptodev *dev)
  28 {
  29         return ccp_dev_start(dev);
  30 }
  31
  32 static void
  33 ccp_pmd_stop(struct rte_cryptodev *dev __rte_unused)
  34 {
  35
  36 }
  37
  38 static int
  39 ccp_pmd_close(struct rte_cryptodev *dev __rte_unused)
  40 {
  41         return 0;
  42 }
  43
  44 static void
  45 ccp_pmd_info_get(struct rte_cryptodev *dev,
  46                  struct rte_cryptodev_info *dev_info)
  47 {
  48         struct ccp_private *internals = dev->data->dev_private;
  49
  50         if (dev_info != NULL) {
  51                 dev_info->driver_id = dev->driver_id;
  52                 dev_info->feature_flags = dev->feature_flags;
  53                 dev_info->capabilities = ccp_pmd_capabilities;
  54                 dev_info->max_nb_queue_pairs = internals->max_nb_qpairs;
  55                 dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
  56         }
  57 }
  58
  59 static int
  60 ccp_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
  61 {
  62         struct ccp_qp *qp;
  63
  64         if (dev->data->queue_pairs[qp_id] != NULL) {
  65                 qp = (struct ccp_qp *)dev->data->queue_pairs[qp_id];
  66                 rte_ring_free(qp->processed_pkts);
  67                 rte_mempool_free(qp->batch_mp);
  68                 rte_free(qp);
  69                 dev->data->queue_pairs[qp_id] = NULL;
  70         }
  71         return 0;
  72 }
  73
  74 static int
  75 ccp_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
  76                 struct ccp_qp *qp)
  77 {
  78         unsigned int n = snprintf(qp->name, sizeof(qp->name),
  79                         "ccp_pmd_%u_qp_%u",
  80                         dev->data->dev_id, qp->id);
  81
  82         if (n > sizeof(qp->name))
  83                 return -1;
  84
  85         return 0;
  86 }
  87
  88 static struct rte_ring *
  89 ccp_pmd_qp_create_batch_info_ring(struct ccp_qp *qp,
  90                                   unsigned int ring_size, int socket_id)
  91 {
  92         struct rte_ring *r;
  93
  94         r = rte_ring_lookup(qp->name);
  95         if (r) {
  96                 if (r->size >= ring_size) {
  97                         CCP_LOG_INFO(
  98                                 "Reusing ring %s for processed packets",
  99                                 qp->name);
 100                         return r;
 101                 }
 102                 CCP_LOG_INFO(
 103                         "Unable to reuse ring %s for processed packets",
 104                          qp->name);
 105                 return NULL;
 106         }
 107
 108         return rte_ring_create(qp->name, ring_size, socket_id,
 109                         RING_F_SP_ENQ | RING_F_SC_DEQ);
 110 }
 111
 112 static int
 113 ccp_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 114                  const struct rte_cryptodev_qp_conf *qp_conf,
 115                  int socket_id, struct rte_mempool *session_pool)
 116 {
 117         struct ccp_private *internals = dev->data->dev_private;
 118         struct ccp_qp *qp;
 119         int retval = 0;
 120
 121         if (qp_id >= internals->max_nb_qpairs) {
 122                 CCP_LOG_ERR("Invalid qp_id %u, should be less than %u",
 123                             qp_id, internals->max_nb_qpairs);
 124                 return (-EINVAL);
 125         }
 126
 127         /* Free memory prior to re-allocation if needed. */
 128         if (dev->data->queue_pairs[qp_id] != NULL)
 129                 ccp_pmd_qp_release(dev, qp_id);
 130
 131         /* Allocate the queue pair data structure. */
 132         qp = rte_zmalloc_socket("CCP Crypto PMD Queue Pair", sizeof(*qp),
 133                                         RTE_CACHE_LINE_SIZE, socket_id);
 134         if (qp == NULL) {
 135                 CCP_LOG_ERR("Failed to allocate queue pair memory");
 136                 return (-ENOMEM);
 137         }
 138
 139         qp->dev = dev;
 140         qp->id = qp_id;
 141         dev->data->queue_pairs[qp_id] = qp;
 142
 143         retval = ccp_pmd_qp_set_unique_name(dev, qp);
 144         if (retval) {
 145                 CCP_LOG_ERR("Failed to create unique name for ccp qp");
 146                 goto qp_setup_cleanup;
 147         }
 148
 149         qp->processed_pkts = ccp_pmd_qp_create_batch_info_ring(qp,
 150                         qp_conf->nb_descriptors, socket_id);
 151         if (qp->processed_pkts == NULL) {
 152                 CCP_LOG_ERR("Failed to create batch info ring");
 153                 goto qp_setup_cleanup;
 154         }
 155
 156         qp->sess_mp = session_pool;
 157
 158         /* mempool for batch info */
 159         qp->batch_mp = rte_mempool_create(
 160                                 qp->name,
 161                                 qp_conf->nb_descriptors,
 162                                 sizeof(struct ccp_batch_info),
 163                                 RTE_CACHE_LINE_SIZE,
 164                                 0, NULL, NULL, NULL, NULL,
 165                                 SOCKET_ID_ANY, 0);
 166         if (qp->batch_mp == NULL)
 167                 goto qp_setup_cleanup;
 168         memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
 169         return 0;
 170
 171 qp_setup_cleanup:
 172         dev->data->queue_pairs[qp_id] = NULL;
 173         if (qp)
 174                 rte_free(qp);
 175         return -1;
 176 }
 177
 178 static int
 179 ccp_pmd_qp_start(struct rte_cryptodev *dev __rte_unused,
 180                  uint16_t queue_pair_id __rte_unused)
 181 {
 182         return -ENOTSUP;
 183 }
 184
 185 static int
 186 ccp_pmd_qp_stop(struct rte_cryptodev *dev __rte_unused,
 187                 uint16_t queue_pair_id __rte_unused)
 188 {
 189         return -ENOTSUP;
 190 }
 191
 192 static uint32_t
 193 ccp_pmd_qp_count(struct rte_cryptodev *dev)
 194 {
 195         return dev->data->nb_queue_pairs;
 196 }
 197
 198 static unsigned
 199 ccp_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
 200 {
 201         return sizeof(struct ccp_session);
 202 }
 203
 204 static int
 205 ccp_pmd_session_configure(struct rte_cryptodev *dev,
 206                           struct rte_crypto_sym_xform *xform,
 207                           struct rte_cryptodev_sym_session *sess,
 208                           struct rte_mempool *mempool)
 209 {
 210         int ret;
 211         void *sess_private_data;
 212
 213         if (unlikely(sess == NULL || xform == NULL)) {
 214                 CCP_LOG_ERR("Invalid session struct or xform");
 215                 return -ENOMEM;
 216         }
 217
 218         if (rte_mempool_get(mempool, &sess_private_data)) {
 219                 CCP_LOG_ERR("Couldn't get object from session mempool");
 220                 return -ENOMEM;
 221         }
 222         ret = ccp_set_session_parameters(sess_private_data, xform);
 223         if (ret != 0) {
 224                 CCP_LOG_ERR("failed configure session parameters");
 225
 226                 /* Return session to mempool */
 227                 rte_mempool_put(mempool, sess_private_data);
 228                 return ret;
 229         }
 230         set_session_private_data(sess, dev->driver_id,
 231                                  sess_private_data);
 232
 233         return 0;
 234 }
 235
 236 static void
 237 ccp_pmd_session_clear(struct rte_cryptodev *dev,
 238                       struct rte_cryptodev_sym_session *sess)
 239 {
 240         uint8_t index = dev->driver_id;
 241         void *sess_priv = get_session_private_data(sess, index);
 242
 243         if (sess_priv) {
 244                 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
 245
 246                 rte_mempool_put(sess_mp, sess_priv);
 247                 memset(sess_priv, 0, sizeof(struct ccp_session));
 248                 set_session_private_data(sess, index, NULL);
 249         }
 250 }
 251
 252 struct rte_cryptodev_ops ccp_ops = {
 253                 .dev_configure          = ccp_pmd_config,
 254                 .dev_start              = ccp_pmd_start,
 255                 .dev_stop               = ccp_pmd_stop,
 256                 .dev_close              = ccp_pmd_close,
 257
 258                 .stats_get              = NULL,
 259                 .stats_reset            = NULL,
 260
 261                 .dev_infos_get          = ccp_pmd_info_get,
 262
 263                 .queue_pair_setup       = ccp_pmd_qp_setup,
 264                 .queue_pair_release     = ccp_pmd_qp_release,
 265                 .queue_pair_start       = ccp_pmd_qp_start,
 266                 .queue_pair_stop        = ccp_pmd_qp_stop,
 267                 .queue_pair_count       = ccp_pmd_qp_count,
 268
 269                 .session_get_size       = ccp_pmd_session_get_size,
 270                 .session_configure      = ccp_pmd_session_configure,
 271                 .session_clear          = ccp_pmd_session_clear,
 272 };
 273
 274 struct rte_cryptodev_ops *ccp_pmd_ops = &ccp_ops;