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