drivers/net/softnic/rte_eth_softnic_cryptodev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Intel Corporation
   3  */
   4
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7
   8 #include <rte_cryptodev.h>
   9 #include <rte_cryptodev_pmd.h>
  10 #include <rte_string_fns.h>
  11
  12 #include "rte_eth_softnic_internals.h"
  13
  14 #define SOFTNIC_CRYPTO_SESSION_CACHE_SIZE 128
  15
  16 int
  17 softnic_cryptodev_init(struct pmd_internals *p)
  18 {
  19         TAILQ_INIT(&p->cryptodev_list);
  20
  21         return 0;
  22 }
  23
  24 void
  25 softnic_cryptodev_free(struct pmd_internals *p)
  26 {
  27         for ( ; ; ) {
  28                 struct softnic_cryptodev *cryptodev;
  29
  30                 cryptodev = TAILQ_FIRST(&p->cryptodev_list);
  31                 if (cryptodev == NULL)
  32                         break;
  33
  34                 TAILQ_REMOVE(&p->cryptodev_list, cryptodev, node);
  35                 free(cryptodev);
  36         }
  37 }
  38
  39 struct softnic_cryptodev *
  40 softnic_cryptodev_find(struct pmd_internals *p,
  41         const char *name)
  42 {
  43         struct softnic_cryptodev *cryptodev;
  44
  45         if (name == NULL)
  46                 return NULL;
  47
  48         TAILQ_FOREACH(cryptodev, &p->cryptodev_list, node)
  49                 if (strcmp(cryptodev->name, name) == 0)
  50                         return cryptodev;
  51
  52         return NULL;
  53 }
  54
  55 struct softnic_cryptodev *
  56 softnic_cryptodev_create(struct pmd_internals *p,
  57         const char *name,
  58         struct softnic_cryptodev_params *params)
  59 {
  60         struct rte_cryptodev_info dev_info;
  61         struct rte_cryptodev_config dev_conf;
  62         struct rte_cryptodev_qp_conf queue_conf;
  63         struct softnic_cryptodev *cryptodev;
  64         uint32_t dev_id, i;
  65         uint32_t socket_id;
  66         uint32_t cache_size;
  67         char mp_name[NAME_SIZE];
  68         int status;
  69
  70         /* Check input params */
  71         if ((name == NULL) ||
  72                 softnic_cryptodev_find(p, name) ||
  73                 (params->n_queues == 0) ||
  74                 (params->queue_size == 0) ||
  75                 (params->session_pool_size == 0))
  76                 return NULL;
  77
  78         if (params->dev_name) {
  79                 status = rte_cryptodev_get_dev_id(params->dev_name);
  80                 if (status == -1)
  81                         return NULL;
  82
  83                 dev_id = (uint32_t)status;
  84         } else {
  85                 if (rte_cryptodev_pmd_is_valid_dev(params->dev_id) == 0)
  86                         return NULL;
  87
  88                 dev_id = params->dev_id;
  89         }
  90
  91         cache_size = (params->session_pool_size / 2 <
  92                         SOFTNIC_CRYPTO_SESSION_CACHE_SIZE) ?
  93                                         (params->session_pool_size / 2) :
  94                                         SOFTNIC_CRYPTO_SESSION_CACHE_SIZE;
  95
  96         socket_id = rte_cryptodev_socket_id(dev_id);
  97         rte_cryptodev_info_get(dev_id, &dev_info);
  98
  99         if (dev_info.max_nb_queue_pairs < params->n_queues)
 100                 return NULL;
 101         if (dev_info.feature_flags & RTE_CRYPTODEV_FF_HW_ACCELERATED)
 102                 return NULL;
 103
 104         dev_conf.socket_id = socket_id;
 105         dev_conf.nb_queue_pairs = params->n_queues;
 106
 107         status = rte_cryptodev_configure(dev_id, &dev_conf);
 108         if (status < 0)
 109                 return NULL;
 110
 111         queue_conf.nb_descriptors = params->queue_size;
 112         for (i = 0; i < params->n_queues; i++) {
 113                 status = rte_cryptodev_queue_pair_setup(dev_id, i,
 114                                 &queue_conf, socket_id);
 115                 if (status < 0)
 116                         return NULL;
 117         }
 118
 119         if (rte_cryptodev_start(dev_id) < 0)
 120                 return NULL;
 121
 122         cryptodev = calloc(1, sizeof(struct softnic_cryptodev));
 123         if (cryptodev == NULL) {
 124                 rte_cryptodev_stop(dev_id);
 125                 return NULL;
 126         }
 127
 128         strlcpy(cryptodev->name, name, sizeof(cryptodev->name));
 129         cryptodev->dev_id = dev_id;
 130         cryptodev->n_queues = params->n_queues;
 131
 132         snprintf(mp_name, NAME_SIZE, "%s_mp%u", name, dev_id);
 133         cryptodev->mp_create = rte_cryptodev_sym_session_pool_create(mp_name,
 134                         params->session_pool_size,
 135                         0,
 136                         cache_size,
 137                         0,
 138                         socket_id);
 139         if (!cryptodev->mp_create)
 140                 goto error_exit;
 141
 142         snprintf(mp_name, NAME_SIZE, "%s_priv_mp%u", name, dev_id);
 143         cryptodev->mp_init = rte_mempool_create(mp_name,
 144                         params->session_pool_size,
 145                         rte_cryptodev_sym_get_private_session_size(dev_id),
 146                         cache_size,
 147                         0,
 148                         NULL,
 149                         NULL,
 150                         NULL,
 151                         NULL,
 152                         socket_id,
 153                         0);
 154         if (!cryptodev->mp_init)
 155                 goto error_exit;
 156
 157         TAILQ_INSERT_TAIL(&p->cryptodev_list, cryptodev, node);
 158
 159         return cryptodev;
 160
 161 error_exit:
 162         if (cryptodev->mp_create)
 163                 rte_mempool_free(cryptodev->mp_create);
 164         if (cryptodev->mp_init)
 165                 rte_mempool_free(cryptodev->mp_init);
 166
 167         free(cryptodev);
 168
 169         return NULL;
 170 }