lib/librte_cryptodev/rte_cryptodev_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 the copyright holder 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
  33 #include <rte_malloc.h>
  34
  35 #include "rte_cryptodev_vdev.h"
  36 #include "rte_cryptodev_pci.h"
  37 #include "rte_cryptodev_pmd.h"
  38
  39 /**
  40  * Parse name from argument
  41  */
  42 static int
  43 rte_cryptodev_vdev_parse_name_arg(const char *key __rte_unused,
  44                 const char *value, void *extra_args)
  45 {
  46         struct rte_crypto_vdev_init_params *params = extra_args;
  47
  48         if (strlen(value) >= RTE_CRYPTODEV_NAME_MAX_LEN - 1) {
  49                 CDEV_LOG_ERR("Invalid name %s, should be less than "
  50                                 "%u bytes", value,
  51                                 RTE_CRYPTODEV_NAME_MAX_LEN - 1);
  52                 return -1;
  53         }
  54
  55         strncpy(params->name, value, RTE_CRYPTODEV_NAME_MAX_LEN);
  56
  57         return 0;
  58 }
  59
  60 /**
  61  * Parse integer from argument
  62  */
  63 static int
  64 rte_cryptodev_vdev_parse_integer_arg(const char *key __rte_unused,
  65                 const char *value, void *extra_args)
  66 {
  67         int *i = extra_args;
  68
  69         *i = atoi(value);
  70         if (*i < 0) {
  71                 CDEV_LOG_ERR("Argument has to be positive.");
  72                 return -1;
  73         }
  74
  75         return 0;
  76 }
  77
  78 struct rte_cryptodev *
  79 rte_cryptodev_vdev_pmd_init(const char *name, size_t dev_private_size,
  80                 int socket_id, struct rte_vdev_device *vdev)
  81 {
  82         struct rte_cryptodev *cryptodev;
  83
  84         /* allocate device structure */
  85         cryptodev = rte_cryptodev_pmd_allocate(name, socket_id);
  86         if (cryptodev == NULL)
  87                 return NULL;
  88
  89         /* allocate private device structure */
  90         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  91                 cryptodev->data->dev_private =
  92                                 rte_zmalloc_socket("cryptodev device private",
  93                                                 dev_private_size,
  94                                                 RTE_CACHE_LINE_SIZE,
  95                                                 socket_id);
  96
  97                 if (cryptodev->data->dev_private == NULL)
  98                         rte_panic("Cannot allocate memzone for private device"
  99                                         " data");
 100         }
 101
 102         cryptodev->device = &vdev->device;
 103
 104         return cryptodev;
 105 }
 106
 107 int
 108 rte_cryptodev_vdev_parse_init_params(struct rte_crypto_vdev_init_params *params,
 109                 const char *input_args)
 110 {
 111         struct rte_kvargs *kvlist = NULL;
 112         int ret = 0;
 113
 114         if (params == NULL)
 115                 return -EINVAL;
 116
 117         if (input_args) {
 118                 kvlist = rte_kvargs_parse(input_args,
 119                                 cryptodev_vdev_valid_params);
 120                 if (kvlist == NULL)
 121                         return -1;
 122
 123                 ret = rte_kvargs_process(kvlist,
 124                                         RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG,
 125                                         &rte_cryptodev_vdev_parse_integer_arg,
 126                                         &params->max_nb_queue_pairs);
 127                 if (ret < 0)
 128                         goto free_kvlist;
 129
 130                 ret = rte_kvargs_process(kvlist,
 131                                         RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG,
 132                                         &rte_cryptodev_vdev_parse_integer_arg,
 133                                         &params->max_nb_sessions);
 134                 if (ret < 0)
 135                         goto free_kvlist;
 136
 137                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_SOCKET_ID,
 138                                         &rte_cryptodev_vdev_parse_integer_arg,
 139                                         &params->socket_id);
 140                 if (ret < 0)
 141                         goto free_kvlist;
 142
 143                 ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_NAME,
 144                                         &rte_cryptodev_vdev_parse_name_arg,
 145                                         params);
 146                 if (ret < 0)
 147                         goto free_kvlist;
 148         }
 149
 150 free_kvlist:
 151         rte_kvargs_free(kvlist);
 152         return ret;
 153 }
 154
 155 int
 156 rte_cryptodev_pci_generic_probe(struct rte_pci_device *pci_dev,
 157                         size_t private_data_size,
 158                         cryptodev_pci_init_t dev_init)
 159 {
 160         struct rte_cryptodev *cryptodev;
 161
 162         char cryptodev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 163
 164         int retval;
 165
 166         rte_pci_device_name(&pci_dev->addr, cryptodev_name,
 167                         sizeof(cryptodev_name));
 168
 169         cryptodev = rte_cryptodev_pmd_allocate(cryptodev_name, rte_socket_id());
 170         if (cryptodev == NULL)
 171                 return -ENOMEM;
 172
 173         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 174                 cryptodev->data->dev_private =
 175                                 rte_zmalloc_socket(
 176                                                 "cryptodev private structure",
 177                                                 private_data_size,
 178                                                 RTE_CACHE_LINE_SIZE,
 179                                                 rte_socket_id());
 180
 181                 if (cryptodev->data->dev_private == NULL)
 182                         rte_panic("Cannot allocate memzone for private "
 183                                         "device data");
 184         }
 185
 186         cryptodev->device = &pci_dev->device;
 187
 188         /* Invoke PMD device initialization function */
 189         RTE_FUNC_PTR_OR_ERR_RET(*dev_init, -EINVAL);
 190         retval = dev_init(cryptodev);
 191         if (retval == 0)
 192                 return 0;
 193
 194         CDEV_LOG_ERR("driver %s: crypto_dev_init(vendor_id=0x%x device_id=0x%x)"
 195                         " failed", pci_dev->device.driver->name,
 196                         (unsigned int) pci_dev->id.vendor_id,
 197                         (unsigned int) pci_dev->id.device_id);
 198
 199         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 200                 rte_free(cryptodev->data->dev_private);
 201
 202         /* free crypto device */
 203         rte_cryptodev_pmd_release_device(cryptodev);
 204
 205         return -ENXIO;
 206 }
 207
 208 int
 209 rte_cryptodev_pci_generic_remove(struct rte_pci_device *pci_dev,
 210                 cryptodev_pci_uninit_t dev_uninit)
 211 {
 212         struct rte_cryptodev *cryptodev;
 213         char cryptodev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 214         int ret;
 215
 216         if (pci_dev == NULL)
 217                 return -EINVAL;
 218
 219         rte_pci_device_name(&pci_dev->addr, cryptodev_name,
 220                         sizeof(cryptodev_name));
 221
 222         cryptodev = rte_cryptodev_pmd_get_named_dev(cryptodev_name);
 223         if (cryptodev == NULL)
 224                 return -ENODEV;
 225
 226         /* Invoke PMD device uninit function */
 227         if (dev_uninit) {
 228                 ret = dev_uninit(cryptodev);
 229                 if (ret)
 230                         return ret;
 231         }
 232
 233         /* free crypto device */
 234         rte_cryptodev_pmd_release_device(cryptodev);
 235
 236         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 237                 rte_free(cryptodev->data->dev_private);
 238
 239         cryptodev->device = NULL;
 240         cryptodev->data = NULL;
 241
 242         return 0;
 243 }