drivers/crypto/ipsec_mb/ipsec_mb_ops.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2021 Intel Corporation
   3  */
   4
   5 #include <string.h>
   6
   7 #include <rte_common.h>
   8 #include <rte_malloc.h>
   9
  10 #include "ipsec_mb_private.h"
  11
  12 #define IMB_MP_REQ_VER_STR "1.1.0"
  13
  14 /** Configure device */
  15 int
  16 ipsec_mb_config(__rte_unused struct rte_cryptodev *dev,
  17                     __rte_unused struct rte_cryptodev_config *config)
  18 {
  19         return 0;
  20 }
  21
  22 /** Start device */
  23 int
  24 ipsec_mb_start(__rte_unused struct rte_cryptodev *dev)
  25 {
  26         return 0;
  27 }
  28
  29 /** Stop device */
  30 void
  31 ipsec_mb_stop(__rte_unused struct rte_cryptodev *dev)
  32 {
  33 }
  34
  35 /** Close device */
  36 int
  37 ipsec_mb_close(__rte_unused struct rte_cryptodev *dev)
  38 {
  39         return 0;
  40 }
  41
  42 /** Get device statistics */
  43 void
  44 ipsec_mb_stats_get(struct rte_cryptodev *dev,
  45                 struct rte_cryptodev_stats *stats)
  46 {
  47         int qp_id;
  48
  49         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
  50                 struct ipsec_mb_qp *qp = dev->data->queue_pairs[qp_id];
  51                 if (qp == NULL) {
  52                         IPSEC_MB_LOG(DEBUG, "Uninitialised qp %d", qp_id);
  53                         continue;
  54                 }
  55
  56                 stats->enqueued_count += qp->stats.enqueued_count;
  57                 stats->dequeued_count += qp->stats.dequeued_count;
  58
  59                 stats->enqueue_err_count += qp->stats.enqueue_err_count;
  60                 stats->dequeue_err_count += qp->stats.dequeue_err_count;
  61         }
  62 }
  63
  64 /** Reset device statistics */
  65 void
  66 ipsec_mb_stats_reset(struct rte_cryptodev *dev)
  67 {
  68         int qp_id;
  69
  70         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
  71                 struct ipsec_mb_qp *qp = dev->data->queue_pairs[qp_id];
  72
  73                 memset(&qp->stats, 0, sizeof(qp->stats));
  74         }
  75 }
  76
  77 /** Get device info */
  78 void
  79 ipsec_mb_info_get(struct rte_cryptodev *dev,
  80                 struct rte_cryptodev_info *dev_info)
  81 {
  82         struct ipsec_mb_dev_private *internals = dev->data->dev_private;
  83         struct ipsec_mb_internals *pmd_info =
  84                 &ipsec_mb_pmds[internals->pmd_type];
  85
  86         if (dev_info != NULL) {
  87                 dev_info->driver_id = dev->driver_id;
  88                 dev_info->feature_flags = dev->feature_flags;
  89                 dev_info->capabilities = pmd_info->caps;
  90                 dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs;
  91                 /* No limit of number of sessions */
  92                 dev_info->sym.max_nb_sessions = 0;
  93         }
  94 }
  95
  96 /** Release queue pair */
  97 int
  98 ipsec_mb_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
  99 {
 100         struct ipsec_mb_qp *qp = dev->data->queue_pairs[qp_id];
 101         struct rte_ring *r = NULL;
 102
 103         if (qp != NULL && rte_eal_process_type() == RTE_PROC_PRIMARY) {
 104                 r = rte_ring_lookup(qp->name);
 105                 if (r)
 106                         rte_ring_free(r);
 107
 108 #if IMB_VERSION(1, 1, 0) > IMB_VERSION_NUM
 109                 if (qp->mb_mgr)
 110                         free_mb_mgr(qp->mb_mgr);
 111 #else
 112                 if (qp->mb_mgr_mz) {
 113                         rte_memzone_free(qp->mb_mgr_mz);
 114                         qp->mb_mgr = NULL;
 115                 }
 116 #endif
 117                 rte_free(qp);
 118                 dev->data->queue_pairs[qp_id] = NULL;
 119         }
 120         return 0;
 121 }
 122
 123 /** Set a unique name for the queue pair */
 124 int
 125 ipsec_mb_qp_set_unique_name(struct rte_cryptodev *dev,
 126                                            struct ipsec_mb_qp *qp)
 127 {
 128         uint32_t n =
 129             snprintf(qp->name, sizeof(qp->name), "ipsec_mb_pmd_%u_qp_%u",
 130                      dev->data->dev_id, qp->id);
 131
 132         if (n >= sizeof(qp->name))
 133                 return -1;
 134
 135         return 0;
 136 }
 137
 138 /** Create a ring to place processed operations on */
 139 static struct rte_ring
 140 *ipsec_mb_qp_create_processed_ops_ring(
 141         struct ipsec_mb_qp *qp, unsigned int ring_size, int socket_id)
 142 {
 143         struct rte_ring *r;
 144         char ring_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 145
 146         unsigned int n = rte_strlcpy(ring_name, qp->name, sizeof(ring_name));
 147
 148         if (n >= sizeof(ring_name))
 149                 return NULL;
 150
 151         r = rte_ring_lookup(ring_name);
 152         if (r) {
 153                 if (rte_ring_get_size(r) >= ring_size) {
 154                         IPSEC_MB_LOG(
 155                             INFO, "Reusing existing ring %s for processed ops",
 156                             ring_name);
 157                         return r;
 158                 }
 159                 IPSEC_MB_LOG(
 160                     ERR, "Unable to reuse existing ring %s for processed ops",
 161                     ring_name);
 162                 return NULL;
 163         }
 164
 165         return rte_ring_create(ring_name, ring_size, socket_id,
 166                                RING_F_SP_ENQ | RING_F_SC_DEQ);
 167 }
 168
 169 #if IMB_VERSION(1, 1, 0) <= IMB_VERSION_NUM
 170 static IMB_MGR *
 171 ipsec_mb_alloc_mgr_from_memzone(const struct rte_memzone **mb_mgr_mz,
 172                 const char *mb_mgr_mz_name)
 173 {
 174         IMB_MGR *mb_mgr;
 175
 176         if (rte_eal_process_type() ==  RTE_PROC_PRIMARY) {
 177                 *mb_mgr_mz = rte_memzone_lookup(mb_mgr_mz_name);
 178                 if (*mb_mgr_mz == NULL) {
 179                         *mb_mgr_mz = rte_memzone_reserve(mb_mgr_mz_name,
 180                         imb_get_mb_mgr_size(),
 181                         rte_socket_id(), 0);
 182                 }
 183                 if (*mb_mgr_mz == NULL) {
 184                         IPSEC_MB_LOG(DEBUG, "Error allocating memzone for %s",
 185                                         mb_mgr_mz_name);
 186                         return NULL;
 187                 }
 188                 mb_mgr = imb_set_pointers_mb_mgr((*mb_mgr_mz)->addr, 0, 1);
 189                 init_mb_mgr_auto(mb_mgr, NULL);
 190         } else {
 191                 *mb_mgr_mz = rte_memzone_lookup(mb_mgr_mz_name);
 192                 if (*mb_mgr_mz == NULL) {
 193                         IPSEC_MB_LOG(ERR,
 194                                 "Secondary can't find %s mz, did primary create it?",
 195                                 mb_mgr_mz_name);
 196                         return NULL;
 197                 }
 198                 mb_mgr = imb_set_pointers_mb_mgr((*mb_mgr_mz)->addr, 0, 0);
 199         }
 200         return mb_mgr;
 201 }
 202 #endif
 203
 204 /** Setup a queue pair */
 205 int
 206 ipsec_mb_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 207                                 const struct rte_cryptodev_qp_conf *qp_conf,
 208                                 int socket_id)
 209 {
 210         struct ipsec_mb_qp *qp = NULL;
 211         struct ipsec_mb_dev_private *internals = dev->data->dev_private;
 212         struct ipsec_mb_internals *pmd_data =
 213                 &ipsec_mb_pmds[internals->pmd_type];
 214         uint32_t qp_size;
 215         int ret;
 216
 217         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 218 #if IMB_VERSION(1, 1, 0) > IMB_VERSION_NUM
 219                 IPSEC_MB_LOG(ERR, "The intel-ipsec-mb version (%s) does not support multiprocess,"
 220                                 "the minimum version required for this feature is %s.",
 221                                 IMB_VERSION_STR, IMB_MP_REQ_VER_STR);
 222                 return -EINVAL;
 223 #endif
 224                 if (dev->data->queue_pairs[qp_id] != NULL)
 225                         qp = dev->data->queue_pairs[qp_id];
 226         } else {
 227                 /* Free memory prior to re-allocation if needed. */
 228                 if (dev->data->queue_pairs[qp_id] != NULL)
 229                         ipsec_mb_qp_release(dev, qp_id);
 230
 231                 qp_size = sizeof(*qp) + pmd_data->qp_priv_size;
 232                 /* Allocate the queue pair data structure. */
 233                 qp = rte_zmalloc_socket("IPSEC PMD Queue Pair", qp_size,
 234                                         RTE_CACHE_LINE_SIZE, socket_id);
 235                 if (qp == NULL)
 236                         return -ENOMEM;
 237         }
 238
 239 #if IMB_VERSION(1, 1, 0) > IMB_VERSION_NUM
 240         qp->mb_mgr = alloc_init_mb_mgr();
 241 #else
 242         char mz_name[IPSEC_MB_MAX_MZ_NAME];
 243         snprintf(mz_name, sizeof(mz_name), "IMB_MGR_DEV_%d_QP_%d",
 244                         dev->data->dev_id, qp_id);
 245         qp->mb_mgr = ipsec_mb_alloc_mgr_from_memzone(&(qp->mb_mgr_mz),
 246                         mz_name);
 247 #endif
 248         if (qp->mb_mgr == NULL) {
 249                 ret = -ENOMEM;
 250                 goto qp_setup_cleanup;
 251         }
 252
 253         if (rte_eal_process_type() == RTE_PROC_SECONDARY)
 254                 return 0;
 255
 256         qp->id = qp_id;
 257         dev->data->queue_pairs[qp_id] = qp;
 258         if (ipsec_mb_qp_set_unique_name(dev, qp)) {
 259                 ret = -EINVAL;
 260                 goto qp_setup_cleanup;
 261         }
 262
 263         qp->pmd_type = internals->pmd_type;
 264         qp->sess_mp = qp_conf->mp_session;
 265         qp->sess_mp_priv = qp_conf->mp_session_private;
 266
 267         qp->ingress_queue = ipsec_mb_qp_create_processed_ops_ring(qp,
 268                 qp_conf->nb_descriptors, socket_id);
 269         if (qp->ingress_queue == NULL) {
 270                 ret = -EINVAL;
 271                 goto qp_setup_cleanup;
 272         }
 273
 274         memset(&qp->stats, 0, sizeof(qp->stats));
 275
 276         if (pmd_data->queue_pair_configure) {
 277                 ret = pmd_data->queue_pair_configure(qp);
 278                 if (ret < 0)
 279                         goto qp_setup_cleanup;
 280         }
 281
 282         return 0;
 283
 284 qp_setup_cleanup:
 285 #if IMB_VERSION(1, 1, 0) > IMB_VERSION_NUM
 286         if (qp->mb_mgr)
 287                 free_mb_mgr(qp->mb_mgr);
 288 #else
 289         if (rte_eal_process_type() == RTE_PROC_SECONDARY)
 290                 return ret;
 291         if (qp->mb_mgr_mz)
 292                 rte_memzone_free(qp->mb_mgr_mz);
 293 #endif
 294         if (qp)
 295                 rte_free(qp);
 296         return ret;
 297 }
 298
 299 /** Return the size of the specific pmd session structure */
 300 unsigned
 301 ipsec_mb_sym_session_get_size(struct rte_cryptodev *dev)
 302 {
 303         struct ipsec_mb_dev_private *internals = dev->data->dev_private;
 304         struct ipsec_mb_internals *pmd_data =
 305                 &ipsec_mb_pmds[internals->pmd_type];
 306
 307         return pmd_data->session_priv_size;
 308 }
 309
 310 /** Configure pmd specific multi-buffer session from a crypto xform chain */
 311 int
 312 ipsec_mb_sym_session_configure(
 313         struct rte_cryptodev *dev, struct rte_crypto_sym_xform *xform,
 314         struct rte_cryptodev_sym_session *sess, struct rte_mempool *mempool)
 315 {
 316         void *sess_private_data;
 317         struct ipsec_mb_dev_private *internals = dev->data->dev_private;
 318         struct ipsec_mb_internals *pmd_data =
 319                 &ipsec_mb_pmds[internals->pmd_type];
 320         IMB_MGR *mb_mgr = alloc_init_mb_mgr();
 321         int ret = 0;
 322
 323         if (!mb_mgr)
 324                 return -ENOMEM;
 325
 326         if (unlikely(sess == NULL)) {
 327                 IPSEC_MB_LOG(ERR, "invalid session struct");
 328                 free_mb_mgr(mb_mgr);
 329                 return -EINVAL;
 330         }
 331
 332         if (rte_mempool_get(mempool, &sess_private_data)) {
 333                 IPSEC_MB_LOG(ERR, "Couldn't get object from session mempool");
 334                 free_mb_mgr(mb_mgr);
 335                 return -ENOMEM;
 336         }
 337
 338         ret = (*pmd_data->session_configure)(mb_mgr, sess_private_data, xform);
 339         if (ret != 0) {
 340                 IPSEC_MB_LOG(ERR, "failed configure session parameters");
 341
 342                 /* Return session to mempool */
 343                 rte_mempool_put(mempool, sess_private_data);
 344                 free_mb_mgr(mb_mgr);
 345                 return ret;
 346         }
 347
 348         set_sym_session_private_data(sess, dev->driver_id, sess_private_data);
 349
 350         free_mb_mgr(mb_mgr);
 351         return 0;
 352 }
 353
 354 /** Clear the session memory */
 355 void
 356 ipsec_mb_sym_session_clear(struct rte_cryptodev *dev,
 357                                struct rte_cryptodev_sym_session *sess)
 358 {
 359         uint8_t index = dev->driver_id;
 360         void *sess_priv = get_sym_session_private_data(sess, index);
 361
 362         /* Zero out the whole structure */
 363         if (sess_priv) {
 364                 memset(sess_priv, 0, ipsec_mb_sym_session_get_size(dev));
 365                 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
 366
 367                 set_sym_session_private_data(sess, index, NULL);
 368                 rte_mempool_put(sess_mp, sess_priv);
 369         }
 370 }