drivers/crypto/virtio/virtio_cryptodev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD.
   3  */
   4 #include <stdbool.h>
   5 #include <unistd.h>
   6
   7 #include <rte_common.h>
   8 #include <rte_errno.h>
   9 #include <rte_pci.h>
  10 #include <rte_bus_pci.h>
  11 #include <rte_cryptodev.h>
  12 #include <rte_cryptodev_pmd.h>
  13 #include <rte_eal.h>
  14
  15 #include "virtio_cryptodev.h"
  16 #include "virtqueue.h"
  17 #include "virtio_crypto_algs.h"
  18 #include "virtio_crypto_capabilities.h"
  19
  20 int virtio_crypto_logtype_init;
  21 int virtio_crypto_logtype_session;
  22 int virtio_crypto_logtype_rx;
  23 int virtio_crypto_logtype_tx;
  24 int virtio_crypto_logtype_driver;
  25
  26 static int virtio_crypto_dev_configure(struct rte_cryptodev *dev,
  27                 struct rte_cryptodev_config *config);
  28 static int virtio_crypto_dev_start(struct rte_cryptodev *dev);
  29 static void virtio_crypto_dev_stop(struct rte_cryptodev *dev);
  30 static int virtio_crypto_dev_close(struct rte_cryptodev *dev);
  31 static void virtio_crypto_dev_info_get(struct rte_cryptodev *dev,
  32                 struct rte_cryptodev_info *dev_info);
  33 static void virtio_crypto_dev_stats_get(struct rte_cryptodev *dev,
  34                 struct rte_cryptodev_stats *stats);
  35 static void virtio_crypto_dev_stats_reset(struct rte_cryptodev *dev);
  36 static int virtio_crypto_qp_setup(struct rte_cryptodev *dev,
  37                 uint16_t queue_pair_id,
  38                 const struct rte_cryptodev_qp_conf *qp_conf,
  39                 int socket_id);
  40 static int virtio_crypto_qp_release(struct rte_cryptodev *dev,
  41                 uint16_t queue_pair_id);
  42 static void virtio_crypto_dev_free_mbufs(struct rte_cryptodev *dev);
  43 static unsigned int virtio_crypto_sym_get_session_private_size(
  44                 struct rte_cryptodev *dev);
  45 static void virtio_crypto_sym_clear_session(struct rte_cryptodev *dev,
  46                 struct rte_cryptodev_sym_session *sess);
  47 static int virtio_crypto_sym_configure_session(struct rte_cryptodev *dev,
  48                 struct rte_crypto_sym_xform *xform,
  49                 struct rte_cryptodev_sym_session *session,
  50                 struct rte_mempool *mp);
  51
  52 /*
  53  * The set of PCI devices this driver supports
  54  */
  55 static const struct rte_pci_id pci_id_virtio_crypto_map[] = {
  56         { RTE_PCI_DEVICE(VIRTIO_CRYPTO_PCI_VENDORID,
  57                                 VIRTIO_CRYPTO_PCI_DEVICEID) },
  58         { .vendor_id = 0, /* sentinel */ },
  59 };
  60
  61 static const struct rte_cryptodev_capabilities virtio_capabilities[] = {
  62         VIRTIO_SYM_CAPABILITIES,
  63         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  64 };
  65
  66 uint8_t cryptodev_virtio_driver_id;
  67
  68 #define NUM_ENTRY_SYM_CREATE_SESSION 4
  69
  70 static int
  71 virtio_crypto_send_command(struct virtqueue *vq,
  72                 struct virtio_crypto_op_ctrl_req *ctrl, uint8_t *cipher_key,
  73                 uint8_t *auth_key, struct virtio_crypto_session *session)
  74 {
  75         uint8_t idx = 0;
  76         uint8_t needed = 1;
  77         uint32_t head = 0;
  78         uint32_t len_cipher_key = 0;
  79         uint32_t len_auth_key = 0;
  80         uint32_t len_ctrl_req = sizeof(struct virtio_crypto_op_ctrl_req);
  81         uint32_t len_session_input = sizeof(struct virtio_crypto_session_input);
  82         uint32_t len_total = 0;
  83         uint32_t input_offset = 0;
  84         void *virt_addr_started = NULL;
  85         phys_addr_t phys_addr_started;
  86         struct vring_desc *desc;
  87         uint32_t desc_offset;
  88         struct virtio_crypto_session_input *input;
  89         int ret;
  90
  91         PMD_INIT_FUNC_TRACE();
  92
  93         if (session == NULL) {
  94                 VIRTIO_CRYPTO_SESSION_LOG_ERR("session is NULL.");
  95                 return -EINVAL;
  96         }
  97         /* cipher only is supported, it is available if auth_key is NULL */
  98         if (!cipher_key) {
  99                 VIRTIO_CRYPTO_SESSION_LOG_ERR("cipher key is NULL.");
 100                 return -EINVAL;
 101         }
 102
 103         head = vq->vq_desc_head_idx;
 104         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_desc_head_idx = %d, vq = %p",
 105                                         head, vq);
 106
 107         if (vq->vq_free_cnt < needed) {
 108                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Not enough entry");
 109                 return -ENOSPC;
 110         }
 111
 112         /* calculate the length of cipher key */
 113         if (cipher_key) {
 114                 switch (ctrl->u.sym_create_session.op_type) {
 115                 case VIRTIO_CRYPTO_SYM_OP_CIPHER:
 116                         len_cipher_key
 117                                 = ctrl->u.sym_create_session.u.cipher
 118                                                         .para.keylen;
 119                         break;
 120                 case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING:
 121                         len_cipher_key
 122                                 = ctrl->u.sym_create_session.u.chain
 123                                         .para.cipher_param.keylen;
 124                         break;
 125                 default:
 126                         VIRTIO_CRYPTO_SESSION_LOG_ERR("invalid op type");
 127                         return -EINVAL;
 128                 }
 129         }
 130
 131         /* calculate the length of auth key */
 132         if (auth_key) {
 133                 len_auth_key =
 134                         ctrl->u.sym_create_session.u.chain.para.u.mac_param
 135                                 .auth_key_len;
 136         }
 137
 138         /*
 139          * malloc memory to store indirect vring_desc entries, including
 140          * ctrl request, cipher key, auth key, session input and desc vring
 141          */
 142         desc_offset = len_ctrl_req + len_cipher_key + len_auth_key
 143                 + len_session_input;
 144         virt_addr_started = rte_malloc(NULL,
 145                 desc_offset + NUM_ENTRY_SYM_CREATE_SESSION
 146                         * sizeof(struct vring_desc), RTE_CACHE_LINE_SIZE);
 147         if (virt_addr_started == NULL) {
 148                 VIRTIO_CRYPTO_SESSION_LOG_ERR("not enough heap memory");
 149                 return -ENOSPC;
 150         }
 151         phys_addr_started = rte_malloc_virt2iova(virt_addr_started);
 152
 153         /* address to store indirect vring desc entries */
 154         desc = (struct vring_desc *)
 155                 ((uint8_t *)virt_addr_started + desc_offset);
 156
 157         /*  ctrl req part */
 158         memcpy(virt_addr_started, ctrl, len_ctrl_req);
 159         desc[idx].addr = phys_addr_started;
 160         desc[idx].len = len_ctrl_req;
 161         desc[idx].flags = VRING_DESC_F_NEXT;
 162         desc[idx].next = idx + 1;
 163         idx++;
 164         len_total += len_ctrl_req;
 165         input_offset += len_ctrl_req;
 166
 167         /* cipher key part */
 168         if (len_cipher_key > 0) {
 169                 memcpy((uint8_t *)virt_addr_started + len_total,
 170                         cipher_key, len_cipher_key);
 171
 172                 desc[idx].addr = phys_addr_started + len_total;
 173                 desc[idx].len = len_cipher_key;
 174                 desc[idx].flags = VRING_DESC_F_NEXT;
 175                 desc[idx].next = idx + 1;
 176                 idx++;
 177                 len_total += len_cipher_key;
 178                 input_offset += len_cipher_key;
 179         }
 180
 181         /* auth key part */
 182         if (len_auth_key > 0) {
 183                 memcpy((uint8_t *)virt_addr_started + len_total,
 184                         auth_key, len_auth_key);
 185
 186                 desc[idx].addr = phys_addr_started + len_total;
 187                 desc[idx].len = len_auth_key;
 188                 desc[idx].flags = VRING_DESC_F_NEXT;
 189                 desc[idx].next = idx + 1;
 190                 idx++;
 191                 len_total += len_auth_key;
 192                 input_offset += len_auth_key;
 193         }
 194
 195         /* input part */
 196         input = (struct virtio_crypto_session_input *)
 197                 ((uint8_t *)virt_addr_started + input_offset);
 198         input->status = VIRTIO_CRYPTO_ERR;
 199         input->session_id = ~0ULL;
 200         desc[idx].addr = phys_addr_started + len_total;
 201         desc[idx].len = len_session_input;
 202         desc[idx].flags = VRING_DESC_F_WRITE;
 203         idx++;
 204
 205         /* use a single desc entry */
 206         vq->vq_ring.desc[head].addr = phys_addr_started + desc_offset;
 207         vq->vq_ring.desc[head].len = idx * sizeof(struct vring_desc);
 208         vq->vq_ring.desc[head].flags = VRING_DESC_F_INDIRECT;
 209         vq->vq_free_cnt--;
 210
 211         vq->vq_desc_head_idx = vq->vq_ring.desc[head].next;
 212
 213         vq_update_avail_ring(vq, head);
 214         vq_update_avail_idx(vq);
 215
 216         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_queue_index = %d",
 217                                         vq->vq_queue_index);
 218
 219         virtqueue_notify(vq);
 220
 221         rte_rmb();
 222         while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
 223                 rte_rmb();
 224                 usleep(100);
 225         }
 226
 227         while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
 228                 uint32_t idx, desc_idx, used_idx;
 229                 struct vring_used_elem *uep;
 230
 231                 used_idx = (uint32_t)(vq->vq_used_cons_idx
 232                                 & (vq->vq_nentries - 1));
 233                 uep = &vq->vq_ring.used->ring[used_idx];
 234                 idx = (uint32_t) uep->id;
 235                 desc_idx = idx;
 236
 237                 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
 238                         desc_idx = vq->vq_ring.desc[desc_idx].next;
 239                         vq->vq_free_cnt++;
 240                 }
 241
 242                 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
 243                 vq->vq_desc_head_idx = idx;
 244
 245                 vq->vq_used_cons_idx++;
 246                 vq->vq_free_cnt++;
 247         }
 248
 249         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_free_cnt=%d\n"
 250                         "vq->vq_desc_head_idx=%d",
 251                         vq->vq_free_cnt, vq->vq_desc_head_idx);
 252
 253         /* get the result */
 254         if (input->status != VIRTIO_CRYPTO_OK) {
 255                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Something wrong on backend! "
 256                                 "status=%u, session_id=%" PRIu64 "",
 257                                 input->status, input->session_id);
 258                 rte_free(virt_addr_started);
 259                 ret = -1;
 260         } else {
 261                 session->session_id = input->session_id;
 262
 263                 VIRTIO_CRYPTO_SESSION_LOG_INFO("Create session successfully, "
 264                                 "session_id=%" PRIu64 "", input->session_id);
 265                 rte_free(virt_addr_started);
 266                 ret = 0;
 267         }
 268
 269         return ret;
 270 }
 271
 272 void
 273 virtio_crypto_queue_release(struct virtqueue *vq)
 274 {
 275         struct virtio_crypto_hw *hw;
 276
 277         PMD_INIT_FUNC_TRACE();
 278
 279         if (vq) {
 280                 hw = vq->hw;
 281                 /* Select and deactivate the queue */
 282                 VTPCI_OPS(hw)->del_queue(hw, vq);
 283
 284                 rte_memzone_free(vq->mz);
 285                 rte_mempool_free(vq->mpool);
 286                 rte_free(vq);
 287         }
 288 }
 289
 290 #define MPOOL_MAX_NAME_SZ 32
 291
 292 int
 293 virtio_crypto_queue_setup(struct rte_cryptodev *dev,
 294                 int queue_type,
 295                 uint16_t vtpci_queue_idx,
 296                 uint16_t nb_desc,
 297                 int socket_id,
 298                 struct virtqueue **pvq)
 299 {
 300         char vq_name[VIRTQUEUE_MAX_NAME_SZ];
 301         char mpool_name[MPOOL_MAX_NAME_SZ];
 302         const struct rte_memzone *mz;
 303         unsigned int vq_size, size;
 304         struct virtio_crypto_hw *hw = dev->data->dev_private;
 305         struct virtqueue *vq = NULL;
 306         uint32_t i = 0;
 307         uint32_t j;
 308
 309         PMD_INIT_FUNC_TRACE();
 310
 311         VIRTIO_CRYPTO_INIT_LOG_DBG("setting up queue: %u", vtpci_queue_idx);
 312
 313         /*
 314          * Read the virtqueue size from the Queue Size field
 315          * Always power of 2 and if 0 virtqueue does not exist
 316          */
 317         vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
 318         if (vq_size == 0) {
 319                 VIRTIO_CRYPTO_INIT_LOG_ERR("virtqueue does not exist");
 320                 return -EINVAL;
 321         }
 322         VIRTIO_CRYPTO_INIT_LOG_DBG("vq_size: %u", vq_size);
 323
 324         if (!rte_is_power_of_2(vq_size)) {
 325                 VIRTIO_CRYPTO_INIT_LOG_ERR("virtqueue size is not powerof 2");
 326                 return -EINVAL;
 327         }
 328
 329         if (queue_type == VTCRYPTO_DATAQ) {
 330                 snprintf(vq_name, sizeof(vq_name), "dev%d_dataqueue%d",
 331                                 dev->data->dev_id, vtpci_queue_idx);
 332                 snprintf(mpool_name, sizeof(mpool_name),
 333                                 "dev%d_dataqueue%d_mpool",
 334                                 dev->data->dev_id, vtpci_queue_idx);
 335         } else if (queue_type == VTCRYPTO_CTRLQ) {
 336                 snprintf(vq_name, sizeof(vq_name), "dev%d_controlqueue",
 337                                 dev->data->dev_id);
 338                 snprintf(mpool_name, sizeof(mpool_name),
 339                                 "dev%d_controlqueue_mpool",
 340                                 dev->data->dev_id);
 341         }
 342         size = RTE_ALIGN_CEIL(sizeof(*vq) +
 343                                 vq_size * sizeof(struct vq_desc_extra),
 344                                 RTE_CACHE_LINE_SIZE);
 345         vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
 346                                 socket_id);
 347         if (vq == NULL) {
 348                 VIRTIO_CRYPTO_INIT_LOG_ERR("Can not allocate virtqueue");
 349                 return -ENOMEM;
 350         }
 351
 352         if (queue_type == VTCRYPTO_DATAQ) {
 353                 /* pre-allocate a mempool and use it in the data plane to
 354                  * improve performance
 355                  */
 356                 vq->mpool = rte_mempool_lookup(mpool_name);
 357                 if (vq->mpool == NULL)
 358                         vq->mpool = rte_mempool_create(mpool_name,
 359                                         vq_size,
 360                                         sizeof(struct virtio_crypto_op_cookie),
 361                                         RTE_CACHE_LINE_SIZE, 0,
 362                                         NULL, NULL, NULL, NULL, socket_id,
 363                                         0);
 364                 if (!vq->mpool) {
 365                         VIRTIO_CRYPTO_DRV_LOG_ERR("Virtio Crypto PMD "
 366                                         "Cannot create mempool");
 367                         goto mpool_create_err;
 368                 }
 369                 for (i = 0; i < vq_size; i++) {
 370                         vq->vq_descx[i].cookie =
 371                                 rte_zmalloc("crypto PMD op cookie pointer",
 372                                         sizeof(struct virtio_crypto_op_cookie),
 373                                         RTE_CACHE_LINE_SIZE);
 374                         if (vq->vq_descx[i].cookie == NULL) {
 375                                 VIRTIO_CRYPTO_DRV_LOG_ERR("Failed to "
 376                                                 "alloc mem for cookie");
 377                                 goto cookie_alloc_err;
 378                         }
 379                 }
 380         }
 381
 382         vq->hw = hw;
 383         vq->dev_id = dev->data->dev_id;
 384         vq->vq_queue_index = vtpci_queue_idx;
 385         vq->vq_nentries = vq_size;
 386
 387         /*
 388          * Using part of the vring entries is permitted, but the maximum
 389          * is vq_size
 390          */
 391         if (nb_desc == 0 || nb_desc > vq_size)
 392                 nb_desc = vq_size;
 393         vq->vq_free_cnt = nb_desc;
 394
 395         /*
 396          * Reserve a memzone for vring elements
 397          */
 398         size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
 399         vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
 400         VIRTIO_CRYPTO_INIT_LOG_DBG("%s vring_size: %d, rounded_vring_size: %d",
 401                         (queue_type == VTCRYPTO_DATAQ) ? "dataq" : "ctrlq",
 402                         size, vq->vq_ring_size);
 403
 404         mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
 405                         socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
 406         if (mz == NULL) {
 407                 if (rte_errno == EEXIST)
 408                         mz = rte_memzone_lookup(vq_name);
 409                 if (mz == NULL) {
 410                         VIRTIO_CRYPTO_INIT_LOG_ERR("not enough memory");
 411                         goto mz_reserve_err;
 412                 }
 413         }
 414
 415         /*
 416          * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
 417          * and only accepts 32 bit page frame number.
 418          * Check if the allocated physical memory exceeds 16TB.
 419          */
 420         if ((mz->phys_addr + vq->vq_ring_size - 1)
 421                                 >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
 422                 VIRTIO_CRYPTO_INIT_LOG_ERR("vring address shouldn't be "
 423                                         "above 16TB!");
 424                 goto vring_addr_err;
 425         }
 426
 427         memset(mz->addr, 0, sizeof(mz->len));
 428         vq->mz = mz;
 429         vq->vq_ring_mem = mz->phys_addr;
 430         vq->vq_ring_virt_mem = mz->addr;
 431         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_ring_mem(physical): 0x%"PRIx64,
 432                                         (uint64_t)mz->phys_addr);
 433         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_ring_virt_mem: 0x%"PRIx64,
 434                                         (uint64_t)(uintptr_t)mz->addr);
 435
 436         *pvq = vq;
 437
 438         return 0;
 439
 440 vring_addr_err:
 441         rte_memzone_free(mz);
 442 mz_reserve_err:
 443 cookie_alloc_err:
 444         rte_mempool_free(vq->mpool);
 445         if (i != 0) {
 446                 for (j = 0; j < i; j++)
 447                         rte_free(vq->vq_descx[j].cookie);
 448         }
 449 mpool_create_err:
 450         rte_free(vq);
 451         return -ENOMEM;
 452 }
 453
 454 static int
 455 virtio_crypto_ctrlq_setup(struct rte_cryptodev *dev, uint16_t queue_idx)
 456 {
 457         int ret;
 458         struct virtqueue *vq;
 459         struct virtio_crypto_hw *hw = dev->data->dev_private;
 460
 461         /* if virtio device has started, do not touch the virtqueues */
 462         if (dev->data->dev_started)
 463                 return 0;
 464
 465         PMD_INIT_FUNC_TRACE();
 466
 467         ret = virtio_crypto_queue_setup(dev, VTCRYPTO_CTRLQ, queue_idx,
 468                         0, SOCKET_ID_ANY, &vq);
 469         if (ret < 0) {
 470                 VIRTIO_CRYPTO_INIT_LOG_ERR("control vq initialization failed");
 471                 return ret;
 472         }
 473
 474         hw->cvq = vq;
 475
 476         return 0;
 477 }
 478
 479 static void
 480 virtio_crypto_free_queues(struct rte_cryptodev *dev)
 481 {
 482         unsigned int i;
 483         struct virtio_crypto_hw *hw = dev->data->dev_private;
 484
 485         PMD_INIT_FUNC_TRACE();
 486
 487         /* control queue release */
 488         virtio_crypto_queue_release(hw->cvq);
 489
 490         /* data queue release */
 491         for (i = 0; i < hw->max_dataqueues; i++)
 492                 virtio_crypto_queue_release(dev->data->queue_pairs[i]);
 493 }
 494
 495 static int
 496 virtio_crypto_dev_close(struct rte_cryptodev *dev __rte_unused)
 497 {
 498         return 0;
 499 }
 500
 501 /*
 502  * dev_ops for virtio, bare necessities for basic operation
 503  */
 504 static struct rte_cryptodev_ops virtio_crypto_dev_ops = {
 505         /* Device related operations */
 506         .dev_configure                   = virtio_crypto_dev_configure,
 507         .dev_start                       = virtio_crypto_dev_start,
 508         .dev_stop                        = virtio_crypto_dev_stop,
 509         .dev_close                       = virtio_crypto_dev_close,
 510         .dev_infos_get                   = virtio_crypto_dev_info_get,
 511
 512         .stats_get                       = virtio_crypto_dev_stats_get,
 513         .stats_reset                     = virtio_crypto_dev_stats_reset,
 514
 515         .queue_pair_setup                = virtio_crypto_qp_setup,
 516         .queue_pair_release              = virtio_crypto_qp_release,
 517
 518         /* Crypto related operations */
 519         .sym_session_get_size           = virtio_crypto_sym_get_session_private_size,
 520         .sym_session_configure          = virtio_crypto_sym_configure_session,
 521         .sym_session_clear              = virtio_crypto_sym_clear_session
 522 };
 523
 524 static void
 525 virtio_crypto_update_stats(struct rte_cryptodev *dev,
 526                 struct rte_cryptodev_stats *stats)
 527 {
 528         unsigned int i;
 529         struct virtio_crypto_hw *hw = dev->data->dev_private;
 530
 531         PMD_INIT_FUNC_TRACE();
 532
 533         if (stats == NULL) {
 534                 VIRTIO_CRYPTO_DRV_LOG_ERR("invalid pointer");
 535                 return;
 536         }
 537
 538         for (i = 0; i < hw->max_dataqueues; i++) {
 539                 const struct virtqueue *data_queue
 540                         = dev->data->queue_pairs[i];
 541                 if (data_queue == NULL)
 542                         continue;
 543
 544                 stats->enqueued_count += data_queue->packets_sent_total;
 545                 stats->enqueue_err_count += data_queue->packets_sent_failed;
 546
 547                 stats->dequeued_count += data_queue->packets_received_total;
 548                 stats->dequeue_err_count
 549                         += data_queue->packets_received_failed;
 550         }
 551 }
 552
 553 static void
 554 virtio_crypto_dev_stats_get(struct rte_cryptodev *dev,
 555                 struct rte_cryptodev_stats *stats)
 556 {
 557         PMD_INIT_FUNC_TRACE();
 558
 559         virtio_crypto_update_stats(dev, stats);
 560 }
 561
 562 static void
 563 virtio_crypto_dev_stats_reset(struct rte_cryptodev *dev)
 564 {
 565         unsigned int i;
 566         struct virtio_crypto_hw *hw = dev->data->dev_private;
 567
 568         PMD_INIT_FUNC_TRACE();
 569
 570         for (i = 0; i < hw->max_dataqueues; i++) {
 571                 struct virtqueue *data_queue = dev->data->queue_pairs[i];
 572                 if (data_queue == NULL)
 573                         continue;
 574
 575                 data_queue->packets_sent_total = 0;
 576                 data_queue->packets_sent_failed = 0;
 577
 578                 data_queue->packets_received_total = 0;
 579                 data_queue->packets_received_failed = 0;
 580         }
 581 }
 582
 583 static int
 584 virtio_crypto_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
 585                 const struct rte_cryptodev_qp_conf *qp_conf,
 586                 int socket_id)
 587 {
 588         int ret;
 589         struct virtqueue *vq;
 590
 591         PMD_INIT_FUNC_TRACE();
 592
 593         /* if virtio dev is started, do not touch the virtqueues */
 594         if (dev->data->dev_started)
 595                 return 0;
 596
 597         ret = virtio_crypto_queue_setup(dev, VTCRYPTO_DATAQ, queue_pair_id,
 598                         qp_conf->nb_descriptors, socket_id, &vq);
 599         if (ret < 0) {
 600                 VIRTIO_CRYPTO_INIT_LOG_ERR(
 601                         "virtio crypto data queue initialization failed\n");
 602                 return ret;
 603         }
 604
 605         dev->data->queue_pairs[queue_pair_id] = vq;
 606
 607         return 0;
 608 }
 609
 610 static int
 611 virtio_crypto_qp_release(struct rte_cryptodev *dev, uint16_t queue_pair_id)
 612 {
 613         struct virtqueue *vq
 614                 = (struct virtqueue *)dev->data->queue_pairs[queue_pair_id];
 615
 616         PMD_INIT_FUNC_TRACE();
 617
 618         if (vq == NULL) {
 619                 VIRTIO_CRYPTO_DRV_LOG_DBG("vq already freed");
 620                 return 0;
 621         }
 622
 623         virtio_crypto_queue_release(vq);
 624         return 0;
 625 }
 626
 627 static int
 628 virtio_negotiate_features(struct virtio_crypto_hw *hw, uint64_t req_features)
 629 {
 630         uint64_t host_features;
 631
 632         PMD_INIT_FUNC_TRACE();
 633
 634         /* Prepare guest_features: feature that driver wants to support */
 635         VIRTIO_CRYPTO_INIT_LOG_DBG("guest_features before negotiate = %" PRIx64,
 636                 req_features);
 637
 638         /* Read device(host) feature bits */
 639         host_features = VTPCI_OPS(hw)->get_features(hw);
 640         VIRTIO_CRYPTO_INIT_LOG_DBG("host_features before negotiate = %" PRIx64,
 641                 host_features);
 642
 643         /*
 644          * Negotiate features: Subset of device feature bits are written back
 645          * guest feature bits.
 646          */
 647         hw->guest_features = req_features;
 648         hw->guest_features = vtpci_cryptodev_negotiate_features(hw,
 649                                                         host_features);
 650         VIRTIO_CRYPTO_INIT_LOG_DBG("features after negotiate = %" PRIx64,
 651                 hw->guest_features);
 652
 653         if (hw->modern) {
 654                 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
 655                         VIRTIO_CRYPTO_INIT_LOG_ERR(
 656                                 "VIRTIO_F_VERSION_1 features is not enabled.");
 657                         return -1;
 658                 }
 659                 vtpci_cryptodev_set_status(hw,
 660                         VIRTIO_CONFIG_STATUS_FEATURES_OK);
 661                 if (!(vtpci_cryptodev_get_status(hw) &
 662                         VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
 663                         VIRTIO_CRYPTO_INIT_LOG_ERR("failed to set FEATURES_OK "
 664                                                 "status!");
 665                         return -1;
 666                 }
 667         }
 668
 669         hw->req_guest_features = req_features;
 670
 671         return 0;
 672 }
 673
 674 /* reset device and renegotiate features if needed */
 675 static int
 676 virtio_crypto_init_device(struct rte_cryptodev *cryptodev,
 677         uint64_t req_features)
 678 {
 679         struct virtio_crypto_hw *hw = cryptodev->data->dev_private;
 680         struct virtio_crypto_config local_config;
 681         struct virtio_crypto_config *config = &local_config;
 682
 683         PMD_INIT_FUNC_TRACE();
 684
 685         /* Reset the device although not necessary at startup */
 686         vtpci_cryptodev_reset(hw);
 687
 688         /* Tell the host we've noticed this device. */
 689         vtpci_cryptodev_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
 690
 691         /* Tell the host we've known how to drive the device. */
 692         vtpci_cryptodev_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
 693         if (virtio_negotiate_features(hw, req_features) < 0)
 694                 return -1;
 695
 696         /* Get status of the device */
 697         vtpci_read_cryptodev_config(hw,
 698                 offsetof(struct virtio_crypto_config, status),
 699                 &config->status, sizeof(config->status));
 700         if (config->status != VIRTIO_CRYPTO_S_HW_READY) {
 701                 VIRTIO_CRYPTO_DRV_LOG_ERR("accelerator hardware is "
 702                                 "not ready");
 703                 return -1;
 704         }
 705
 706         /* Get number of data queues */
 707         vtpci_read_cryptodev_config(hw,
 708                 offsetof(struct virtio_crypto_config, max_dataqueues),
 709                 &config->max_dataqueues,
 710                 sizeof(config->max_dataqueues));
 711         hw->max_dataqueues = config->max_dataqueues;
 712
 713         VIRTIO_CRYPTO_INIT_LOG_DBG("hw->max_dataqueues=%d",
 714                 hw->max_dataqueues);
 715
 716         return 0;
 717 }
 718
 719 /*
 720  * This function is based on probe() function
 721  * It returns 0 on success.
 722  */
 723 static int
 724 crypto_virtio_create(const char *name, struct rte_pci_device *pci_dev,
 725                 struct rte_cryptodev_pmd_init_params *init_params)
 726 {
 727         struct rte_cryptodev *cryptodev;
 728         struct virtio_crypto_hw *hw;
 729
 730         PMD_INIT_FUNC_TRACE();
 731
 732         cryptodev = rte_cryptodev_pmd_create(name, &pci_dev->device,
 733                                         init_params);
 734         if (cryptodev == NULL)
 735                 return -ENODEV;
 736
 737         cryptodev->driver_id = cryptodev_virtio_driver_id;
 738         cryptodev->dev_ops = &virtio_crypto_dev_ops;
 739
 740         cryptodev->enqueue_burst = virtio_crypto_pkt_tx_burst;
 741         cryptodev->dequeue_burst = virtio_crypto_pkt_rx_burst;
 742
 743         cryptodev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 744                 RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING;
 745
 746         hw = cryptodev->data->dev_private;
 747         hw->dev_id = cryptodev->data->dev_id;
 748         hw->virtio_dev_capabilities = virtio_capabilities;
 749
 750         VIRTIO_CRYPTO_INIT_LOG_DBG("dev %d vendorID=0x%x deviceID=0x%x",
 751                 cryptodev->data->dev_id, pci_dev->id.vendor_id,
 752                 pci_dev->id.device_id);
 753
 754         /* pci device init */
 755         if (vtpci_cryptodev_init(pci_dev, hw))
 756                 return -1;
 757
 758         if (virtio_crypto_init_device(cryptodev,
 759                         VIRTIO_CRYPTO_PMD_GUEST_FEATURES) < 0)
 760                 return -1;
 761
 762         return 0;
 763 }
 764
 765 static int
 766 virtio_crypto_dev_uninit(struct rte_cryptodev *cryptodev)
 767 {
 768         struct virtio_crypto_hw *hw = cryptodev->data->dev_private;
 769
 770         PMD_INIT_FUNC_TRACE();
 771
 772         if (rte_eal_process_type() == RTE_PROC_SECONDARY)
 773                 return -EPERM;
 774
 775         if (cryptodev->data->dev_started) {
 776                 virtio_crypto_dev_stop(cryptodev);
 777                 virtio_crypto_dev_close(cryptodev);
 778         }
 779
 780         cryptodev->dev_ops = NULL;
 781         cryptodev->enqueue_burst = NULL;
 782         cryptodev->dequeue_burst = NULL;
 783
 784         /* release control queue */
 785         virtio_crypto_queue_release(hw->cvq);
 786
 787         rte_free(cryptodev->data);
 788         cryptodev->data = NULL;
 789
 790         VIRTIO_CRYPTO_DRV_LOG_INFO("dev_uninit completed");
 791
 792         return 0;
 793 }
 794
 795 static int
 796 virtio_crypto_dev_configure(struct rte_cryptodev *cryptodev,
 797         struct rte_cryptodev_config *config __rte_unused)
 798 {
 799         struct virtio_crypto_hw *hw = cryptodev->data->dev_private;
 800
 801         PMD_INIT_FUNC_TRACE();
 802
 803         if (virtio_crypto_init_device(cryptodev,
 804                         VIRTIO_CRYPTO_PMD_GUEST_FEATURES) < 0)
 805                 return -1;
 806
 807         /* setup control queue
 808          * [0, 1, ... ,(config->max_dataqueues - 1)] are data queues
 809          * config->max_dataqueues is the control queue
 810          */
 811         if (virtio_crypto_ctrlq_setup(cryptodev, hw->max_dataqueues) < 0) {
 812                 VIRTIO_CRYPTO_INIT_LOG_ERR("control queue setup error");
 813                 return -1;
 814         }
 815         virtio_crypto_ctrlq_start(cryptodev);
 816
 817         return 0;
 818 }
 819
 820 static void
 821 virtio_crypto_dev_stop(struct rte_cryptodev *dev)
 822 {
 823         struct virtio_crypto_hw *hw = dev->data->dev_private;
 824
 825         PMD_INIT_FUNC_TRACE();
 826         VIRTIO_CRYPTO_DRV_LOG_DBG("virtio_dev_stop");
 827
 828         vtpci_cryptodev_reset(hw);
 829
 830         virtio_crypto_dev_free_mbufs(dev);
 831         virtio_crypto_free_queues(dev);
 832
 833         dev->data->dev_started = 0;
 834 }
 835
 836 static int
 837 virtio_crypto_dev_start(struct rte_cryptodev *dev)
 838 {
 839         struct virtio_crypto_hw *hw = dev->data->dev_private;
 840
 841         if (dev->data->dev_started)
 842                 return 0;
 843
 844         /* Do final configuration before queue engine starts */
 845         virtio_crypto_dataq_start(dev);
 846         vtpci_cryptodev_reinit_complete(hw);
 847
 848         dev->data->dev_started = 1;
 849
 850         return 0;
 851 }
 852
 853 static void
 854 virtio_crypto_dev_free_mbufs(struct rte_cryptodev *dev)
 855 {
 856         uint32_t i;
 857         struct virtio_crypto_hw *hw = dev->data->dev_private;
 858
 859         for (i = 0; i < hw->max_dataqueues; i++) {
 860                 VIRTIO_CRYPTO_INIT_LOG_DBG("Before freeing dataq[%d] used "
 861                         "and unused buf", i);
 862                 VIRTQUEUE_DUMP((struct virtqueue *)
 863                         dev->data->queue_pairs[i]);
 864
 865                 VIRTIO_CRYPTO_INIT_LOG_DBG("queue_pairs[%d]=%p",
 866                                 i, dev->data->queue_pairs[i]);
 867
 868                 virtqueue_detatch_unused(dev->data->queue_pairs[i]);
 869
 870                 VIRTIO_CRYPTO_INIT_LOG_DBG("After freeing dataq[%d] used and "
 871                                         "unused buf", i);
 872                 VIRTQUEUE_DUMP(
 873                         (struct virtqueue *)dev->data->queue_pairs[i]);
 874         }
 875 }
 876
 877 static unsigned int
 878 virtio_crypto_sym_get_session_private_size(
 879                 struct rte_cryptodev *dev __rte_unused)
 880 {
 881         PMD_INIT_FUNC_TRACE();
 882
 883         return RTE_ALIGN_CEIL(sizeof(struct virtio_crypto_session), 16);
 884 }
 885
 886 static int
 887 virtio_crypto_check_sym_session_paras(
 888                 struct rte_cryptodev *dev)
 889 {
 890         struct virtio_crypto_hw *hw;
 891
 892         PMD_INIT_FUNC_TRACE();
 893
 894         if (unlikely(dev == NULL)) {
 895                 VIRTIO_CRYPTO_SESSION_LOG_ERR("dev is NULL");
 896                 return -1;
 897         }
 898         if (unlikely(dev->data == NULL)) {
 899                 VIRTIO_CRYPTO_SESSION_LOG_ERR("dev->data is NULL");
 900                 return -1;
 901         }
 902         hw = dev->data->dev_private;
 903         if (unlikely(hw == NULL)) {
 904                 VIRTIO_CRYPTO_SESSION_LOG_ERR("hw is NULL");
 905                 return -1;
 906         }
 907         if (unlikely(hw->cvq == NULL)) {
 908                 VIRTIO_CRYPTO_SESSION_LOG_ERR("vq is NULL");
 909                 return -1;
 910         }
 911
 912         return 0;
 913 }
 914
 915 static int
 916 virtio_crypto_check_sym_clear_session_paras(
 917                 struct rte_cryptodev *dev,
 918                 struct rte_cryptodev_sym_session *sess)
 919 {
 920         PMD_INIT_FUNC_TRACE();
 921
 922         if (sess == NULL) {
 923                 VIRTIO_CRYPTO_SESSION_LOG_ERR("sym_session is NULL");
 924                 return -1;
 925         }
 926
 927         return virtio_crypto_check_sym_session_paras(dev);
 928 }
 929
 930 #define NUM_ENTRY_SYM_CLEAR_SESSION 2
 931
 932 static void
 933 virtio_crypto_sym_clear_session(
 934                 struct rte_cryptodev *dev,
 935                 struct rte_cryptodev_sym_session *sess)
 936 {
 937         struct virtio_crypto_hw *hw;
 938         struct virtqueue *vq;
 939         struct virtio_crypto_session *session;
 940         struct virtio_crypto_op_ctrl_req *ctrl;
 941         struct vring_desc *desc;
 942         uint8_t *status;
 943         uint8_t needed = 1;
 944         uint32_t head;
 945         uint8_t *malloc_virt_addr;
 946         uint64_t malloc_phys_addr;
 947         uint8_t len_inhdr = sizeof(struct virtio_crypto_inhdr);
 948         uint32_t len_op_ctrl_req = sizeof(struct virtio_crypto_op_ctrl_req);
 949         uint32_t desc_offset = len_op_ctrl_req + len_inhdr;
 950
 951         PMD_INIT_FUNC_TRACE();
 952
 953         if (virtio_crypto_check_sym_clear_session_paras(dev, sess) < 0)
 954                 return;
 955
 956         hw = dev->data->dev_private;
 957         vq = hw->cvq;
 958         session = (struct virtio_crypto_session *)get_sym_session_private_data(
 959                 sess, cryptodev_virtio_driver_id);
 960         if (session == NULL) {
 961                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Invalid session parameter");
 962                 return;
 963         }
 964
 965         VIRTIO_CRYPTO_SESSION_LOG_INFO("vq->vq_desc_head_idx = %d, "
 966                         "vq = %p", vq->vq_desc_head_idx, vq);
 967
 968         if (vq->vq_free_cnt < needed) {
 969                 VIRTIO_CRYPTO_SESSION_LOG_ERR(
 970                                 "vq->vq_free_cnt = %d is less than %d, "
 971                                 "not enough", vq->vq_free_cnt, needed);
 972                 return;
 973         }
 974
 975         /*
 976          * malloc memory to store information of ctrl request op,
 977          * returned status and desc vring
 978          */
 979         malloc_virt_addr = rte_malloc(NULL, len_op_ctrl_req + len_inhdr
 980                 + NUM_ENTRY_SYM_CLEAR_SESSION
 981                 * sizeof(struct vring_desc), RTE_CACHE_LINE_SIZE);
 982         if (malloc_virt_addr == NULL) {
 983                 VIRTIO_CRYPTO_SESSION_LOG_ERR("not enough heap room");
 984                 return;
 985         }
 986         malloc_phys_addr = rte_malloc_virt2iova(malloc_virt_addr);
 987
 988         /* assign ctrl request op part */
 989         ctrl = (struct virtio_crypto_op_ctrl_req *)malloc_virt_addr;
 990         ctrl->header.opcode = VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION;
 991         /* default data virtqueue is 0 */
 992         ctrl->header.queue_id = 0;
 993         ctrl->u.destroy_session.session_id = session->session_id;
 994
 995         /* status part */
 996         status = &(((struct virtio_crypto_inhdr *)
 997                 ((uint8_t *)malloc_virt_addr + len_op_ctrl_req))->status);
 998         *status = VIRTIO_CRYPTO_ERR;
 999
1000         /* indirect desc vring part */
1001         desc = (struct vring_desc *)((uint8_t *)malloc_virt_addr
1002                 + desc_offset);
1003
1004         /* ctrl request part */
1005         desc[0].addr = malloc_phys_addr;
1006         desc[0].len = len_op_ctrl_req;
1007         desc[0].flags = VRING_DESC_F_NEXT;
1008         desc[0].next = 1;
1009
1010         /* status part */
1011         desc[1].addr = malloc_phys_addr + len_op_ctrl_req;
1012         desc[1].len = len_inhdr;
1013         desc[1].flags = VRING_DESC_F_WRITE;
1014
1015         /* use only a single desc entry */
1016         head = vq->vq_desc_head_idx;
1017         vq->vq_ring.desc[head].flags = VRING_DESC_F_INDIRECT;
1018         vq->vq_ring.desc[head].addr = malloc_phys_addr + desc_offset;
1019         vq->vq_ring.desc[head].len
1020                 = NUM_ENTRY_SYM_CLEAR_SESSION
1021                 * sizeof(struct vring_desc);
1022         vq->vq_free_cnt -= needed;
1023
1024         vq->vq_desc_head_idx = vq->vq_ring.desc[head].next;
1025
1026         vq_update_avail_ring(vq, head);
1027         vq_update_avail_idx(vq);
1028
1029         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_queue_index = %d",
1030                                         vq->vq_queue_index);
1031
1032         virtqueue_notify(vq);
1033
1034         rte_rmb();
1035         while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
1036                 rte_rmb();
1037                 usleep(100);
1038         }
1039
1040         while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
1041                 uint32_t idx, desc_idx, used_idx;
1042                 struct vring_used_elem *uep;
1043
1044                 used_idx = (uint32_t)(vq->vq_used_cons_idx
1045                                 & (vq->vq_nentries - 1));
1046                 uep = &vq->vq_ring.used->ring[used_idx];
1047                 idx = (uint32_t) uep->id;
1048                 desc_idx = idx;
1049                 while (vq->vq_ring.desc[desc_idx].flags
1050                                 & VRING_DESC_F_NEXT) {
1051                         desc_idx = vq->vq_ring.desc[desc_idx].next;
1052                         vq->vq_free_cnt++;
1053                 }
1054
1055                 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
1056                 vq->vq_desc_head_idx = idx;
1057                 vq->vq_used_cons_idx++;
1058                 vq->vq_free_cnt++;
1059         }
1060
1061         if (*status != VIRTIO_CRYPTO_OK) {
1062                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Close session failed "
1063                                 "status=%"PRIu32", session_id=%"PRIu64"",
1064                                 *status, session->session_id);
1065                 rte_free(malloc_virt_addr);
1066                 return;
1067         }
1068
1069         VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_free_cnt=%d\n"
1070                         "vq->vq_desc_head_idx=%d",
1071                         vq->vq_free_cnt, vq->vq_desc_head_idx);
1072
1073         VIRTIO_CRYPTO_SESSION_LOG_INFO("Close session %"PRIu64" successfully ",
1074                         session->session_id);
1075
1076         memset(session, 0, sizeof(struct virtio_crypto_session));
1077         struct rte_mempool *sess_mp = rte_mempool_from_obj(session);
1078         set_sym_session_private_data(sess, cryptodev_virtio_driver_id, NULL);
1079         rte_mempool_put(sess_mp, session);
1080         rte_free(malloc_virt_addr);
1081 }
1082
1083 static struct rte_crypto_cipher_xform *
1084 virtio_crypto_get_cipher_xform(struct rte_crypto_sym_xform *xform)
1085 {
1086         do {
1087                 if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
1088                         return &xform->cipher;
1089
1090                 xform = xform->next;
1091         } while (xform);
1092
1093         return NULL;
1094 }
1095
1096 static struct rte_crypto_auth_xform *
1097 virtio_crypto_get_auth_xform(struct rte_crypto_sym_xform *xform)
1098 {
1099         do {
1100                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH)
1101                         return &xform->auth;
1102
1103                 xform = xform->next;
1104         } while (xform);
1105
1106         return NULL;
1107 }
1108
1109 /** Get xform chain order */
1110 static int
1111 virtio_crypto_get_chain_order(struct rte_crypto_sym_xform *xform)
1112 {
1113         if (xform == NULL)
1114                 return -1;
1115
1116         /* Cipher Only */
1117         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
1118                         xform->next == NULL)
1119                 return VIRTIO_CRYPTO_CMD_CIPHER;
1120
1121         /* Authentication Only */
1122         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH &&
1123                         xform->next == NULL)
1124                 return VIRTIO_CRYPTO_CMD_AUTH;
1125
1126         /* Authenticate then Cipher */
1127         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH &&
1128                         xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
1129                 return VIRTIO_CRYPTO_CMD_HASH_CIPHER;
1130
1131         /* Cipher then Authenticate */
1132         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
1133                         xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
1134                 return VIRTIO_CRYPTO_CMD_CIPHER_HASH;
1135
1136         return -1;
1137 }
1138
1139 static int
1140 virtio_crypto_sym_pad_cipher_param(
1141                 struct virtio_crypto_cipher_session_para *para,
1142                 struct rte_crypto_cipher_xform *cipher_xform)
1143 {
1144         switch (cipher_xform->algo) {
1145         case RTE_CRYPTO_CIPHER_AES_CBC:
1146                 para->algo = VIRTIO_CRYPTO_CIPHER_AES_CBC;
1147                 break;
1148         default:
1149                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Crypto: Unsupported "
1150                                 "Cipher alg %u", cipher_xform->algo);
1151                 return -1;
1152         }
1153
1154         para->keylen = cipher_xform->key.length;
1155         switch (cipher_xform->op) {
1156         case RTE_CRYPTO_CIPHER_OP_ENCRYPT:
1157                 para->op = VIRTIO_CRYPTO_OP_ENCRYPT;
1158                 break;
1159         case RTE_CRYPTO_CIPHER_OP_DECRYPT:
1160                 para->op = VIRTIO_CRYPTO_OP_DECRYPT;
1161                 break;
1162         default:
1163                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Unsupported cipher operation "
1164                                         "parameter");
1165                 return -1;
1166         }
1167
1168         return 0;
1169 }
1170
1171 static int
1172 virtio_crypto_sym_pad_auth_param(
1173                 struct virtio_crypto_op_ctrl_req *ctrl,
1174                 struct rte_crypto_auth_xform *auth_xform)
1175 {
1176         uint32_t *algo;
1177         struct virtio_crypto_alg_chain_session_para *para =
1178                 &(ctrl->u.sym_create_session.u.chain.para);
1179
1180         switch (ctrl->u.sym_create_session.u.chain.para.hash_mode) {
1181         case VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN:
1182                 algo = &(para->u.hash_param.algo);
1183                 break;
1184         case VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH:
1185                 algo = &(para->u.mac_param.algo);
1186                 break;
1187         default:
1188                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Unsupported hash mode %u "
1189                         "specified",
1190                         ctrl->u.sym_create_session.u.chain.para.hash_mode);
1191                 return -1;
1192         }
1193
1194         switch (auth_xform->algo) {
1195         case RTE_CRYPTO_AUTH_SHA1_HMAC:
1196                 *algo = VIRTIO_CRYPTO_MAC_HMAC_SHA1;
1197                 break;
1198         default:
1199                 VIRTIO_CRYPTO_SESSION_LOG_ERR(
1200                         "Crypto: Undefined Hash algo %u specified",
1201                         auth_xform->algo);
1202                 return -1;
1203         }
1204
1205         return 0;
1206 }
1207
1208 static int
1209 virtio_crypto_sym_pad_op_ctrl_req(
1210                 struct virtio_crypto_op_ctrl_req *ctrl,
1211                 struct rte_crypto_sym_xform *xform, bool is_chainned,
1212                 uint8_t *cipher_key_data, uint8_t *auth_key_data,
1213                 struct virtio_crypto_session *session)
1214 {
1215         int ret;
1216         struct rte_crypto_auth_xform *auth_xform = NULL;
1217         struct rte_crypto_cipher_xform *cipher_xform = NULL;
1218
1219         /* Get cipher xform from crypto xform chain */
1220         cipher_xform = virtio_crypto_get_cipher_xform(xform);
1221         if (cipher_xform) {
1222                 if (cipher_xform->key.length > VIRTIO_CRYPTO_MAX_KEY_SIZE) {
1223                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1224                                 "cipher key size cannot be longer than %u",
1225                                 VIRTIO_CRYPTO_MAX_KEY_SIZE);
1226                         return -1;
1227                 }
1228                 if (cipher_xform->iv.length > VIRTIO_CRYPTO_MAX_IV_SIZE) {
1229                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1230                                 "cipher IV size cannot be longer than %u",
1231                                 VIRTIO_CRYPTO_MAX_IV_SIZE);
1232                         return -1;
1233                 }
1234                 if (is_chainned)
1235                         ret = virtio_crypto_sym_pad_cipher_param(
1236                                 &ctrl->u.sym_create_session.u.chain.para
1237                                                 .cipher_param, cipher_xform);
1238                 else
1239                         ret = virtio_crypto_sym_pad_cipher_param(
1240                                 &ctrl->u.sym_create_session.u.cipher.para,
1241                                 cipher_xform);
1242
1243                 if (ret < 0) {
1244                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1245                                 "pad cipher parameter failed");
1246                         return -1;
1247                 }
1248
1249                 memcpy(cipher_key_data, cipher_xform->key.data,
1250                                 cipher_xform->key.length);
1251
1252                 session->iv.offset = cipher_xform->iv.offset;
1253                 session->iv.length = cipher_xform->iv.length;
1254         }
1255
1256         /* Get auth xform from crypto xform chain */
1257         auth_xform = virtio_crypto_get_auth_xform(xform);
1258         if (auth_xform) {
1259                 /* FIXME: support VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED */
1260                 struct virtio_crypto_alg_chain_session_para *para =
1261                         &(ctrl->u.sym_create_session.u.chain.para);
1262                 if (auth_xform->key.length) {
1263                         if (auth_xform->key.length >
1264                                         VIRTIO_CRYPTO_MAX_KEY_SIZE) {
1265                                 VIRTIO_CRYPTO_SESSION_LOG_ERR(
1266                                 "auth key size cannot be longer than %u",
1267                                         VIRTIO_CRYPTO_MAX_KEY_SIZE);
1268                                 return -1;
1269                         }
1270                         para->hash_mode = VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH;
1271                         para->u.mac_param.auth_key_len =
1272                                 (uint32_t)auth_xform->key.length;
1273                         para->u.mac_param.hash_result_len =
1274                                 auth_xform->digest_length;
1275                         memcpy(auth_key_data, auth_xform->key.data,
1276                                         auth_xform->key.length);
1277                 } else {
1278                         para->hash_mode = VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN;
1279                         para->u.hash_param.hash_result_len =
1280                                 auth_xform->digest_length;
1281                 }
1282
1283                 ret = virtio_crypto_sym_pad_auth_param(ctrl, auth_xform);
1284                 if (ret < 0) {
1285                         VIRTIO_CRYPTO_SESSION_LOG_ERR("pad auth parameter "
1286                                                 "failed");
1287                         return -1;
1288                 }
1289         }
1290
1291         return 0;
1292 }
1293
1294 static int
1295 virtio_crypto_check_sym_configure_session_paras(
1296                 struct rte_cryptodev *dev,
1297                 struct rte_crypto_sym_xform *xform,
1298                 struct rte_cryptodev_sym_session *sym_sess,
1299                 struct rte_mempool *mempool)
1300 {
1301         if (unlikely(xform == NULL) || unlikely(sym_sess == NULL) ||
1302                 unlikely(mempool == NULL)) {
1303                 VIRTIO_CRYPTO_SESSION_LOG_ERR("NULL pointer");
1304                 return -1;
1305         }
1306
1307         if (virtio_crypto_check_sym_session_paras(dev) < 0)
1308                 return -1;
1309
1310         return 0;
1311 }
1312
1313 static int
1314 virtio_crypto_sym_configure_session(
1315                 struct rte_cryptodev *dev,
1316                 struct rte_crypto_sym_xform *xform,
1317                 struct rte_cryptodev_sym_session *sess,
1318                 struct rte_mempool *mempool)
1319 {
1320         int ret;
1321         struct virtio_crypto_session crypto_sess;
1322         void *session_private = &crypto_sess;
1323         struct virtio_crypto_session *session;
1324         struct virtio_crypto_op_ctrl_req *ctrl_req;
1325         enum virtio_crypto_cmd_id cmd_id;
1326         uint8_t cipher_key_data[VIRTIO_CRYPTO_MAX_KEY_SIZE] = {0};
1327         uint8_t auth_key_data[VIRTIO_CRYPTO_MAX_KEY_SIZE] = {0};
1328         struct virtio_crypto_hw *hw;
1329         struct virtqueue *control_vq;
1330
1331         PMD_INIT_FUNC_TRACE();
1332
1333         ret = virtio_crypto_check_sym_configure_session_paras(dev, xform,
1334                         sess, mempool);
1335         if (ret < 0) {
1336                 VIRTIO_CRYPTO_SESSION_LOG_ERR("Invalid parameters");
1337                 return ret;
1338         }
1339
1340         if (rte_mempool_get(mempool, &session_private)) {
1341                 VIRTIO_CRYPTO_SESSION_LOG_ERR(
1342                         "Couldn't get object from session mempool");
1343                 return -ENOMEM;
1344         }
1345
1346         session = (struct virtio_crypto_session *)session_private;
1347         memset(session, 0, sizeof(struct virtio_crypto_session));
1348         ctrl_req = &session->ctrl;
1349         ctrl_req->header.opcode = VIRTIO_CRYPTO_CIPHER_CREATE_SESSION;
1350         /* FIXME: support multiqueue */
1351         ctrl_req->header.queue_id = 0;
1352
1353         hw = dev->data->dev_private;
1354         control_vq = hw->cvq;
1355
1356         cmd_id = virtio_crypto_get_chain_order(xform);
1357         if (cmd_id == VIRTIO_CRYPTO_CMD_CIPHER_HASH)
1358                 ctrl_req->u.sym_create_session.u.chain.para.alg_chain_order
1359                         = VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH;
1360         if (cmd_id == VIRTIO_CRYPTO_CMD_HASH_CIPHER)
1361                 ctrl_req->u.sym_create_session.u.chain.para.alg_chain_order
1362                         = VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER;
1363
1364         switch (cmd_id) {
1365         case VIRTIO_CRYPTO_CMD_CIPHER_HASH:
1366         case VIRTIO_CRYPTO_CMD_HASH_CIPHER:
1367                 ctrl_req->u.sym_create_session.op_type
1368                         = VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING;
1369
1370                 ret = virtio_crypto_sym_pad_op_ctrl_req(ctrl_req,
1371                         xform, true, cipher_key_data, auth_key_data, session);
1372                 if (ret < 0) {
1373                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1374                                 "padding sym op ctrl req failed");
1375                         goto error_out;
1376                 }
1377                 ret = virtio_crypto_send_command(control_vq, ctrl_req,
1378                         cipher_key_data, auth_key_data, session);
1379                 if (ret < 0) {
1380                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1381                                 "create session failed: %d", ret);
1382                         goto error_out;
1383                 }
1384                 break;
1385         case VIRTIO_CRYPTO_CMD_CIPHER:
1386                 ctrl_req->u.sym_create_session.op_type
1387                         = VIRTIO_CRYPTO_SYM_OP_CIPHER;
1388                 ret = virtio_crypto_sym_pad_op_ctrl_req(ctrl_req, xform,
1389                         false, cipher_key_data, auth_key_data, session);
1390                 if (ret < 0) {
1391                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1392                                 "padding sym op ctrl req failed");
1393                         goto error_out;
1394                 }
1395                 ret = virtio_crypto_send_command(control_vq, ctrl_req,
1396                         cipher_key_data, NULL, session);
1397                 if (ret < 0) {
1398                         VIRTIO_CRYPTO_SESSION_LOG_ERR(
1399                                 "create session failed: %d", ret);
1400                         goto error_out;
1401                 }
1402                 break;
1403         default:
1404                 VIRTIO_CRYPTO_SESSION_LOG_ERR(
1405                         "Unsupported operation chain order parameter");
1406                 goto error_out;
1407         }
1408
1409         set_sym_session_private_data(sess, dev->driver_id,
1410                 session_private);
1411
1412         return 0;
1413
1414 error_out:
1415         return -1;
1416 }
1417
1418 static void
1419 virtio_crypto_dev_info_get(struct rte_cryptodev *dev,
1420                 struct rte_cryptodev_info *info)
1421 {
1422         struct virtio_crypto_hw *hw = dev->data->dev_private;
1423
1424         PMD_INIT_FUNC_TRACE();
1425
1426         if (info != NULL) {
1427                 info->driver_id = cryptodev_virtio_driver_id;
1428                 info->feature_flags = dev->feature_flags;
1429                 info->max_nb_queue_pairs = hw->max_dataqueues;
1430                 /* No limit of number of sessions */
1431                 info->sym.max_nb_sessions = 0;
1432                 info->capabilities = hw->virtio_dev_capabilities;
1433         }
1434 }
1435
1436 static int
1437 crypto_virtio_pci_probe(
1438         struct rte_pci_driver *pci_drv __rte_unused,
1439         struct rte_pci_device *pci_dev)
1440 {
1441         struct rte_cryptodev_pmd_init_params init_params = {
1442                 .name = "",
1443                 .socket_id = pci_dev->device.numa_node,
1444                 .private_data_size = sizeof(struct virtio_crypto_hw)
1445         };
1446         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
1447
1448         VIRTIO_CRYPTO_DRV_LOG_DBG("Found Crypto device at %02x:%02x.%x",
1449                         pci_dev->addr.bus,
1450                         pci_dev->addr.devid,
1451                         pci_dev->addr.function);
1452
1453         rte_pci_device_name(&pci_dev->addr, name, sizeof(name));
1454
1455         return crypto_virtio_create(name, pci_dev, &init_params);
1456 }
1457
1458 static int
1459 crypto_virtio_pci_remove(
1460         struct rte_pci_device *pci_dev __rte_unused)
1461 {
1462         struct rte_cryptodev *cryptodev;
1463         char cryptodev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
1464
1465         if (pci_dev == NULL)
1466                 return -EINVAL;
1467
1468         rte_pci_device_name(&pci_dev->addr, cryptodev_name,
1469                         sizeof(cryptodev_name));
1470
1471         cryptodev = rte_cryptodev_pmd_get_named_dev(cryptodev_name);
1472         if (cryptodev == NULL)
1473                 return -ENODEV;
1474
1475         return virtio_crypto_dev_uninit(cryptodev);
1476 }
1477
1478 static struct rte_pci_driver rte_virtio_crypto_driver = {
1479         .id_table = pci_id_virtio_crypto_map,
1480         .drv_flags = 0,
1481         .probe = crypto_virtio_pci_probe,
1482         .remove = crypto_virtio_pci_remove
1483 };
1484
1485 static struct cryptodev_driver virtio_crypto_drv;
1486
1487 RTE_PMD_REGISTER_PCI(CRYPTODEV_NAME_VIRTIO_PMD, rte_virtio_crypto_driver);
1488 RTE_PMD_REGISTER_CRYPTO_DRIVER(virtio_crypto_drv,
1489         rte_virtio_crypto_driver.driver,
1490         cryptodev_virtio_driver_id);
1491
1492 RTE_INIT(virtio_crypto_init_log)
1493 {
1494         virtio_crypto_logtype_init = rte_log_register("pmd.crypto.virtio.init");
1495         if (virtio_crypto_logtype_init >= 0)
1496                 rte_log_set_level(virtio_crypto_logtype_init, RTE_LOG_NOTICE);
1497
1498         virtio_crypto_logtype_session =
1499                 rte_log_register("pmd.crypto.virtio.session");
1500         if (virtio_crypto_logtype_session >= 0)
1501                 rte_log_set_level(virtio_crypto_logtype_session,
1502                                 RTE_LOG_NOTICE);
1503
1504         virtio_crypto_logtype_rx = rte_log_register("pmd.crypto.virtio.rx");
1505         if (virtio_crypto_logtype_rx >= 0)
1506                 rte_log_set_level(virtio_crypto_logtype_rx, RTE_LOG_NOTICE);
1507
1508         virtio_crypto_logtype_tx = rte_log_register("pmd.crypto.virtio.tx");
1509         if (virtio_crypto_logtype_tx >= 0)
1510                 rte_log_set_level(virtio_crypto_logtype_tx, RTE_LOG_NOTICE);
1511
1512         virtio_crypto_logtype_driver =
1513                 rte_log_register("pmd.crypto.virtio.driver");
1514         if (virtio_crypto_logtype_driver >= 0)
1515                 rte_log_set_level(virtio_crypto_logtype_driver, RTE_LOG_NOTICE);
1516 }