From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 20:24:20 +0200 Subject: Adding upstream version 14.2.21. Signed-off-by: Daniel Baumann --- src/spdk/dpdk/drivers/crypto/virtio/Makefile | 35 + src/spdk/dpdk/drivers/crypto/virtio/meson.build | 8 + .../virtio/rte_pmd_virtio_crypto_version.map | 3 + .../drivers/crypto/virtio/virtio_crypto_algs.h | 28 + .../crypto/virtio/virtio_crypto_capabilities.h | 51 + .../dpdk/drivers/crypto/virtio/virtio_cryptodev.c | 1505 ++++++++++++++++++++ .../dpdk/drivers/crypto/virtio/virtio_cryptodev.h | 64 + src/spdk/dpdk/drivers/crypto/virtio/virtio_logs.h | 91 ++ src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.c | 462 ++++++ src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.h | 253 ++++ src/spdk/dpdk/drivers/crypto/virtio/virtio_ring.h | 137 ++ src/spdk/dpdk/drivers/crypto/virtio/virtio_rxtx.c | 527 +++++++ src/spdk/dpdk/drivers/crypto/virtio/virtqueue.c | 43 + src/spdk/dpdk/drivers/crypto/virtio/virtqueue.h | 171 +++ 14 files changed, 3378 insertions(+) create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/Makefile create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/meson.build create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/rte_pmd_virtio_crypto_version.map create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_algs.h create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_capabilities.h create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.c create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.h create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_logs.h create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.c create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.h create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_ring.h create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtio_rxtx.c create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtqueue.c create mode 100644 src/spdk/dpdk/drivers/crypto/virtio/virtqueue.h (limited to 'src/spdk/dpdk/drivers/crypto/virtio') diff --git a/src/spdk/dpdk/drivers/crypto/virtio/Makefile b/src/spdk/dpdk/drivers/crypto/virtio/Makefile new file mode 100644 index 00000000..be7b828f --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/Makefile @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + +include $(RTE_SDK)/mk/rte.vars.mk + +# +# library name +# +LIB = librte_pmd_virtio_crypto.a + +# +# include virtio_crypto.h +# +CFLAGS += -I$(RTE_SDK)/lib/librte_vhost +CFLAGS += -O3 +CFLAGS += $(WERROR_FLAGS) + +EXPORT_MAP := rte_pmd_virtio_crypto_version.map + +LIBABIVER := 1 + +# +# all source are stored in SRCS-y +# +SRCS-$(CONFIG_RTE_LIBRTE_PMD_VIRTIO_CRYPTO) += virtqueue.c +SRCS-$(CONFIG_RTE_LIBRTE_PMD_VIRTIO_CRYPTO) += virtio_pci.c +SRCS-$(CONFIG_RTE_LIBRTE_PMD_VIRTIO_CRYPTO) += virtio_rxtx.c +SRCS-$(CONFIG_RTE_LIBRTE_PMD_VIRTIO_CRYPTO) += virtio_cryptodev.c + +# this lib depends upon: +LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool +LDLIBS += -lrte_cryptodev +LDLIBS += -lrte_pci -lrte_bus_pci + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/src/spdk/dpdk/drivers/crypto/virtio/meson.build b/src/spdk/dpdk/drivers/crypto/virtio/meson.build new file mode 100644 index 00000000..b15b3f9f --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/meson.build @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + +includes += include_directories('../../../lib/librte_vhost') +deps += 'bus_pci' +name = 'virtio_crypto' +sources = files('virtio_cryptodev.c', 'virtio_pci.c', + 'virtio_rxtx.c', 'virtqueue.c') diff --git a/src/spdk/dpdk/drivers/crypto/virtio/rte_pmd_virtio_crypto_version.map b/src/spdk/dpdk/drivers/crypto/virtio/rte_pmd_virtio_crypto_version.map new file mode 100644 index 00000000..de8e412f --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/rte_pmd_virtio_crypto_version.map @@ -0,0 +1,3 @@ +DPDK_18.05 { + local: *; +}; diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_algs.h b/src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_algs.h new file mode 100644 index 00000000..4c44af37 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_algs.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTIO_CRYPTO_ALGS_H_ +#define _VIRTIO_CRYPTO_ALGS_H_ + +#include + +#include "virtio_crypto.h" + +struct virtio_crypto_session { + uint64_t session_id; + + struct { + uint16_t offset; + uint16_t length; + } iv; + + struct { + uint32_t length; + phys_addr_t phys_addr; + } aad; + + struct virtio_crypto_op_ctrl_req ctrl; +}; + +#endif /* _VIRTIO_CRYPTO_ALGS_H_ */ diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_capabilities.h b/src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_capabilities.h new file mode 100644 index 00000000..03c30dee --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_crypto_capabilities.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTIO_CRYPTO_CAPABILITIES_H_ +#define _VIRTIO_CRYPTO_CAPABILITIES_H_ + +#define VIRTIO_SYM_CAPABILITIES \ + { /* SHA1 HMAC */ \ + .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, \ + {.sym = { \ + .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH, \ + {.auth = { \ + .algo = RTE_CRYPTO_AUTH_SHA1_HMAC, \ + .block_size = 64, \ + .key_size = { \ + .min = 1, \ + .max = 64, \ + .increment = 1 \ + }, \ + .digest_size = { \ + .min = 1, \ + .max = 20, \ + .increment = 1 \ + }, \ + .iv_size = { 0 } \ + }, } \ + }, } \ + }, \ + { /* AES CBC */ \ + .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, \ + {.sym = { \ + .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER, \ + {.cipher = { \ + .algo = RTE_CRYPTO_CIPHER_AES_CBC, \ + .block_size = 16, \ + .key_size = { \ + .min = 16, \ + .max = 32, \ + .increment = 8 \ + }, \ + .iv_size = { \ + .min = 16, \ + .max = 16, \ + .increment = 0 \ + } \ + }, } \ + }, } \ + } + +#endif /* _VIRTIO_CRYPTO_CAPABILITIES_H_ */ diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.c b/src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.c new file mode 100644 index 00000000..568b5a40 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.c @@ -0,0 +1,1505 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "virtio_cryptodev.h" +#include "virtqueue.h" +#include "virtio_crypto_algs.h" +#include "virtio_crypto_capabilities.h" + +int virtio_crypto_logtype_init; +int virtio_crypto_logtype_session; +int virtio_crypto_logtype_rx; +int virtio_crypto_logtype_tx; +int virtio_crypto_logtype_driver; + +static int virtio_crypto_dev_configure(struct rte_cryptodev *dev, + struct rte_cryptodev_config *config); +static int virtio_crypto_dev_start(struct rte_cryptodev *dev); +static void virtio_crypto_dev_stop(struct rte_cryptodev *dev); +static int virtio_crypto_dev_close(struct rte_cryptodev *dev); +static void virtio_crypto_dev_info_get(struct rte_cryptodev *dev, + struct rte_cryptodev_info *dev_info); +static void virtio_crypto_dev_stats_get(struct rte_cryptodev *dev, + struct rte_cryptodev_stats *stats); +static void virtio_crypto_dev_stats_reset(struct rte_cryptodev *dev); +static int virtio_crypto_qp_setup(struct rte_cryptodev *dev, + uint16_t queue_pair_id, + const struct rte_cryptodev_qp_conf *qp_conf, + int socket_id, + struct rte_mempool *session_pool); +static int virtio_crypto_qp_release(struct rte_cryptodev *dev, + uint16_t queue_pair_id); +static void virtio_crypto_dev_free_mbufs(struct rte_cryptodev *dev); +static unsigned int virtio_crypto_sym_get_session_private_size( + struct rte_cryptodev *dev); +static void virtio_crypto_sym_clear_session(struct rte_cryptodev *dev, + struct rte_cryptodev_sym_session *sess); +static int virtio_crypto_sym_configure_session(struct rte_cryptodev *dev, + struct rte_crypto_sym_xform *xform, + struct rte_cryptodev_sym_session *session, + struct rte_mempool *mp); + +/* + * The set of PCI devices this driver supports + */ +static const struct rte_pci_id pci_id_virtio_crypto_map[] = { + { RTE_PCI_DEVICE(VIRTIO_CRYPTO_PCI_VENDORID, + VIRTIO_CRYPTO_PCI_DEVICEID) }, + { .vendor_id = 0, /* sentinel */ }, +}; + +static const struct rte_cryptodev_capabilities virtio_capabilities[] = { + VIRTIO_SYM_CAPABILITIES, + RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST() +}; + +uint8_t cryptodev_virtio_driver_id; + +#define NUM_ENTRY_SYM_CREATE_SESSION 4 + +static int +virtio_crypto_send_command(struct virtqueue *vq, + struct virtio_crypto_op_ctrl_req *ctrl, uint8_t *cipher_key, + uint8_t *auth_key, struct virtio_crypto_session *session) +{ + uint8_t idx = 0; + uint8_t needed = 1; + uint32_t head = 0; + uint32_t len_cipher_key = 0; + uint32_t len_auth_key = 0; + uint32_t len_ctrl_req = sizeof(struct virtio_crypto_op_ctrl_req); + uint32_t len_session_input = sizeof(struct virtio_crypto_session_input); + uint32_t len_total = 0; + uint32_t input_offset = 0; + void *virt_addr_started = NULL; + phys_addr_t phys_addr_started; + struct vring_desc *desc; + uint32_t desc_offset; + struct virtio_crypto_session_input *input; + int ret; + + PMD_INIT_FUNC_TRACE(); + + if (session == NULL) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("session is NULL."); + return -EINVAL; + } + /* cipher only is supported, it is available if auth_key is NULL */ + if (!cipher_key) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("cipher key is NULL."); + return -EINVAL; + } + + head = vq->vq_desc_head_idx; + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_desc_head_idx = %d, vq = %p", + head, vq); + + if (vq->vq_free_cnt < needed) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("Not enough entry"); + return -ENOSPC; + } + + /* calculate the length of cipher key */ + if (cipher_key) { + switch (ctrl->u.sym_create_session.op_type) { + case VIRTIO_CRYPTO_SYM_OP_CIPHER: + len_cipher_key + = ctrl->u.sym_create_session.u.cipher + .para.keylen; + break; + case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING: + len_cipher_key + = ctrl->u.sym_create_session.u.chain + .para.cipher_param.keylen; + break; + default: + VIRTIO_CRYPTO_SESSION_LOG_ERR("invalid op type"); + return -EINVAL; + } + } + + /* calculate the length of auth key */ + if (auth_key) { + len_auth_key = + ctrl->u.sym_create_session.u.chain.para.u.mac_param + .auth_key_len; + } + + /* + * malloc memory to store indirect vring_desc entries, including + * ctrl request, cipher key, auth key, session input and desc vring + */ + desc_offset = len_ctrl_req + len_cipher_key + len_auth_key + + len_session_input; + virt_addr_started = rte_malloc(NULL, + desc_offset + NUM_ENTRY_SYM_CREATE_SESSION + * sizeof(struct vring_desc), RTE_CACHE_LINE_SIZE); + if (virt_addr_started == NULL) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("not enough heap memory"); + return -ENOSPC; + } + phys_addr_started = rte_malloc_virt2iova(virt_addr_started); + + /* address to store indirect vring desc entries */ + desc = (struct vring_desc *) + ((uint8_t *)virt_addr_started + desc_offset); + + /* ctrl req part */ + memcpy(virt_addr_started, ctrl, len_ctrl_req); + desc[idx].addr = phys_addr_started; + desc[idx].len = len_ctrl_req; + desc[idx].flags = VRING_DESC_F_NEXT; + desc[idx].next = idx + 1; + idx++; + len_total += len_ctrl_req; + input_offset += len_ctrl_req; + + /* cipher key part */ + if (len_cipher_key > 0) { + memcpy((uint8_t *)virt_addr_started + len_total, + cipher_key, len_cipher_key); + + desc[idx].addr = phys_addr_started + len_total; + desc[idx].len = len_cipher_key; + desc[idx].flags = VRING_DESC_F_NEXT; + desc[idx].next = idx + 1; + idx++; + len_total += len_cipher_key; + input_offset += len_cipher_key; + } + + /* auth key part */ + if (len_auth_key > 0) { + memcpy((uint8_t *)virt_addr_started + len_total, + auth_key, len_auth_key); + + desc[idx].addr = phys_addr_started + len_total; + desc[idx].len = len_auth_key; + desc[idx].flags = VRING_DESC_F_NEXT; + desc[idx].next = idx + 1; + idx++; + len_total += len_auth_key; + input_offset += len_auth_key; + } + + /* input part */ + input = (struct virtio_crypto_session_input *) + ((uint8_t *)virt_addr_started + input_offset); + input->status = VIRTIO_CRYPTO_ERR; + input->session_id = ~0ULL; + desc[idx].addr = phys_addr_started + len_total; + desc[idx].len = len_session_input; + desc[idx].flags = VRING_DESC_F_WRITE; + idx++; + + /* use a single desc entry */ + vq->vq_ring.desc[head].addr = phys_addr_started + desc_offset; + vq->vq_ring.desc[head].len = idx * sizeof(struct vring_desc); + vq->vq_ring.desc[head].flags = VRING_DESC_F_INDIRECT; + vq->vq_free_cnt--; + + vq->vq_desc_head_idx = vq->vq_ring.desc[head].next; + + vq_update_avail_ring(vq, head); + vq_update_avail_idx(vq); + + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_queue_index = %d", + vq->vq_queue_index); + + virtqueue_notify(vq); + + rte_rmb(); + while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) { + rte_rmb(); + usleep(100); + } + + while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) { + uint32_t idx, desc_idx, used_idx; + struct vring_used_elem *uep; + + used_idx = (uint32_t)(vq->vq_used_cons_idx + & (vq->vq_nentries - 1)); + uep = &vq->vq_ring.used->ring[used_idx]; + idx = (uint32_t) uep->id; + desc_idx = idx; + + while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) { + desc_idx = vq->vq_ring.desc[desc_idx].next; + vq->vq_free_cnt++; + } + + vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx; + vq->vq_desc_head_idx = idx; + + vq->vq_used_cons_idx++; + vq->vq_free_cnt++; + } + + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_free_cnt=%d\n" + "vq->vq_desc_head_idx=%d", + vq->vq_free_cnt, vq->vq_desc_head_idx); + + /* get the result */ + if (input->status != VIRTIO_CRYPTO_OK) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("Something wrong on backend! " + "status=%u, session_id=%" PRIu64 "", + input->status, input->session_id); + rte_free(virt_addr_started); + ret = -1; + } else { + session->session_id = input->session_id; + + VIRTIO_CRYPTO_SESSION_LOG_INFO("Create session successfully, " + "session_id=%" PRIu64 "", input->session_id); + rte_free(virt_addr_started); + ret = 0; + } + + return ret; +} + +void +virtio_crypto_queue_release(struct virtqueue *vq) +{ + struct virtio_crypto_hw *hw; + + PMD_INIT_FUNC_TRACE(); + + if (vq) { + hw = vq->hw; + /* Select and deactivate the queue */ + VTPCI_OPS(hw)->del_queue(hw, vq); + + rte_memzone_free(vq->mz); + rte_mempool_free(vq->mpool); + rte_free(vq); + } +} + +#define MPOOL_MAX_NAME_SZ 32 + +int +virtio_crypto_queue_setup(struct rte_cryptodev *dev, + int queue_type, + uint16_t vtpci_queue_idx, + uint16_t nb_desc, + int socket_id, + struct virtqueue **pvq) +{ + char vq_name[VIRTQUEUE_MAX_NAME_SZ]; + char mpool_name[MPOOL_MAX_NAME_SZ]; + const struct rte_memzone *mz; + unsigned int vq_size, size; + struct virtio_crypto_hw *hw = dev->data->dev_private; + struct virtqueue *vq = NULL; + uint32_t i = 0; + uint32_t j; + + PMD_INIT_FUNC_TRACE(); + + VIRTIO_CRYPTO_INIT_LOG_DBG("setting up queue: %u", vtpci_queue_idx); + + /* + * Read the virtqueue size from the Queue Size field + * Always power of 2 and if 0 virtqueue does not exist + */ + vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx); + if (vq_size == 0) { + VIRTIO_CRYPTO_INIT_LOG_ERR("virtqueue does not exist"); + return -EINVAL; + } + VIRTIO_CRYPTO_INIT_LOG_DBG("vq_size: %u", vq_size); + + if (!rte_is_power_of_2(vq_size)) { + VIRTIO_CRYPTO_INIT_LOG_ERR("virtqueue size is not powerof 2"); + return -EINVAL; + } + + if (queue_type == VTCRYPTO_DATAQ) { + snprintf(vq_name, sizeof(vq_name), "dev%d_dataqueue%d", + dev->data->dev_id, vtpci_queue_idx); + snprintf(mpool_name, sizeof(mpool_name), + "dev%d_dataqueue%d_mpool", + dev->data->dev_id, vtpci_queue_idx); + } else if (queue_type == VTCRYPTO_CTRLQ) { + snprintf(vq_name, sizeof(vq_name), "dev%d_controlqueue", + dev->data->dev_id); + snprintf(mpool_name, sizeof(mpool_name), + "dev%d_controlqueue_mpool", + dev->data->dev_id); + } + size = RTE_ALIGN_CEIL(sizeof(*vq) + + vq_size * sizeof(struct vq_desc_extra), + RTE_CACHE_LINE_SIZE); + vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, + socket_id); + if (vq == NULL) { + VIRTIO_CRYPTO_INIT_LOG_ERR("Can not allocate virtqueue"); + return -ENOMEM; + } + + if (queue_type == VTCRYPTO_DATAQ) { + /* pre-allocate a mempool and use it in the data plane to + * improve performance + */ + vq->mpool = rte_mempool_lookup(mpool_name); + if (vq->mpool == NULL) + vq->mpool = rte_mempool_create(mpool_name, + vq_size, + sizeof(struct virtio_crypto_op_cookie), + RTE_CACHE_LINE_SIZE, 0, + NULL, NULL, NULL, NULL, socket_id, + 0); + if (!vq->mpool) { + VIRTIO_CRYPTO_DRV_LOG_ERR("Virtio Crypto PMD " + "Cannot create mempool"); + goto mpool_create_err; + } + for (i = 0; i < vq_size; i++) { + vq->vq_descx[i].cookie = + rte_zmalloc("crypto PMD op cookie pointer", + sizeof(struct virtio_crypto_op_cookie), + RTE_CACHE_LINE_SIZE); + if (vq->vq_descx[i].cookie == NULL) { + VIRTIO_CRYPTO_DRV_LOG_ERR("Failed to " + "alloc mem for cookie"); + goto cookie_alloc_err; + } + } + } + + vq->hw = hw; + vq->dev_id = dev->data->dev_id; + vq->vq_queue_index = vtpci_queue_idx; + vq->vq_nentries = vq_size; + + /* + * Using part of the vring entries is permitted, but the maximum + * is vq_size + */ + if (nb_desc == 0 || nb_desc > vq_size) + nb_desc = vq_size; + vq->vq_free_cnt = nb_desc; + + /* + * Reserve a memzone for vring elements + */ + size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN); + vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN); + VIRTIO_CRYPTO_INIT_LOG_DBG("%s vring_size: %d, rounded_vring_size: %d", + (queue_type == VTCRYPTO_DATAQ) ? "dataq" : "ctrlq", + size, vq->vq_ring_size); + + mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, + socket_id, 0, VIRTIO_PCI_VRING_ALIGN); + if (mz == NULL) { + if (rte_errno == EEXIST) + mz = rte_memzone_lookup(vq_name); + if (mz == NULL) { + VIRTIO_CRYPTO_INIT_LOG_ERR("not enough memory"); + goto mz_reserve_err; + } + } + + /* + * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit, + * and only accepts 32 bit page frame number. + * Check if the allocated physical memory exceeds 16TB. + */ + if ((mz->phys_addr + vq->vq_ring_size - 1) + >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) { + VIRTIO_CRYPTO_INIT_LOG_ERR("vring address shouldn't be " + "above 16TB!"); + goto vring_addr_err; + } + + memset(mz->addr, 0, sizeof(mz->len)); + vq->mz = mz; + vq->vq_ring_mem = mz->phys_addr; + vq->vq_ring_virt_mem = mz->addr; + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_ring_mem(physical): 0x%"PRIx64, + (uint64_t)mz->phys_addr); + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_ring_virt_mem: 0x%"PRIx64, + (uint64_t)(uintptr_t)mz->addr); + + *pvq = vq; + + return 0; + +vring_addr_err: + rte_memzone_free(mz); +mz_reserve_err: +cookie_alloc_err: + rte_mempool_free(vq->mpool); + if (i != 0) { + for (j = 0; j < i; j++) + rte_free(vq->vq_descx[j].cookie); + } +mpool_create_err: + rte_free(vq); + return -ENOMEM; +} + +static int +virtio_crypto_ctrlq_setup(struct rte_cryptodev *dev, uint16_t queue_idx) +{ + int ret; + struct virtqueue *vq; + struct virtio_crypto_hw *hw = dev->data->dev_private; + + /* if virtio device has started, do not touch the virtqueues */ + if (dev->data->dev_started) + return 0; + + PMD_INIT_FUNC_TRACE(); + + ret = virtio_crypto_queue_setup(dev, VTCRYPTO_CTRLQ, queue_idx, + 0, SOCKET_ID_ANY, &vq); + if (ret < 0) { + VIRTIO_CRYPTO_INIT_LOG_ERR("control vq initialization failed"); + return ret; + } + + hw->cvq = vq; + + return 0; +} + +static void +virtio_crypto_free_queues(struct rte_cryptodev *dev) +{ + unsigned int i; + struct virtio_crypto_hw *hw = dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + /* control queue release */ + virtio_crypto_queue_release(hw->cvq); + + /* data queue release */ + for (i = 0; i < hw->max_dataqueues; i++) + virtio_crypto_queue_release(dev->data->queue_pairs[i]); +} + +static int +virtio_crypto_dev_close(struct rte_cryptodev *dev __rte_unused) +{ + return 0; +} + +/* + * dev_ops for virtio, bare necessities for basic operation + */ +static struct rte_cryptodev_ops virtio_crypto_dev_ops = { + /* Device related operations */ + .dev_configure = virtio_crypto_dev_configure, + .dev_start = virtio_crypto_dev_start, + .dev_stop = virtio_crypto_dev_stop, + .dev_close = virtio_crypto_dev_close, + .dev_infos_get = virtio_crypto_dev_info_get, + + .stats_get = virtio_crypto_dev_stats_get, + .stats_reset = virtio_crypto_dev_stats_reset, + + .queue_pair_setup = virtio_crypto_qp_setup, + .queue_pair_release = virtio_crypto_qp_release, + .queue_pair_count = NULL, + + /* Crypto related operations */ + .sym_session_get_size = virtio_crypto_sym_get_session_private_size, + .sym_session_configure = virtio_crypto_sym_configure_session, + .sym_session_clear = virtio_crypto_sym_clear_session +}; + +static void +virtio_crypto_update_stats(struct rte_cryptodev *dev, + struct rte_cryptodev_stats *stats) +{ + unsigned int i; + struct virtio_crypto_hw *hw = dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + if (stats == NULL) { + VIRTIO_CRYPTO_DRV_LOG_ERR("invalid pointer"); + return; + } + + for (i = 0; i < hw->max_dataqueues; i++) { + const struct virtqueue *data_queue + = dev->data->queue_pairs[i]; + if (data_queue == NULL) + continue; + + stats->enqueued_count += data_queue->packets_sent_total; + stats->enqueue_err_count += data_queue->packets_sent_failed; + + stats->dequeued_count += data_queue->packets_received_total; + stats->dequeue_err_count + += data_queue->packets_received_failed; + } +} + +static void +virtio_crypto_dev_stats_get(struct rte_cryptodev *dev, + struct rte_cryptodev_stats *stats) +{ + PMD_INIT_FUNC_TRACE(); + + virtio_crypto_update_stats(dev, stats); +} + +static void +virtio_crypto_dev_stats_reset(struct rte_cryptodev *dev) +{ + unsigned int i; + struct virtio_crypto_hw *hw = dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < hw->max_dataqueues; i++) { + struct virtqueue *data_queue = dev->data->queue_pairs[i]; + if (data_queue == NULL) + continue; + + data_queue->packets_sent_total = 0; + data_queue->packets_sent_failed = 0; + + data_queue->packets_received_total = 0; + data_queue->packets_received_failed = 0; + } +} + +static int +virtio_crypto_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id, + const struct rte_cryptodev_qp_conf *qp_conf, + int socket_id, + struct rte_mempool *session_pool __rte_unused) +{ + int ret; + struct virtqueue *vq; + + PMD_INIT_FUNC_TRACE(); + + /* if virtio dev is started, do not touch the virtqueues */ + if (dev->data->dev_started) + return 0; + + ret = virtio_crypto_queue_setup(dev, VTCRYPTO_DATAQ, queue_pair_id, + qp_conf->nb_descriptors, socket_id, &vq); + if (ret < 0) { + VIRTIO_CRYPTO_INIT_LOG_ERR( + "virtio crypto data queue initialization failed\n"); + return ret; + } + + dev->data->queue_pairs[queue_pair_id] = vq; + + return 0; +} + +static int +virtio_crypto_qp_release(struct rte_cryptodev *dev, uint16_t queue_pair_id) +{ + struct virtqueue *vq + = (struct virtqueue *)dev->data->queue_pairs[queue_pair_id]; + + PMD_INIT_FUNC_TRACE(); + + if (vq == NULL) { + VIRTIO_CRYPTO_DRV_LOG_DBG("vq already freed"); + return 0; + } + + virtio_crypto_queue_release(vq); + return 0; +} + +static int +virtio_negotiate_features(struct virtio_crypto_hw *hw, uint64_t req_features) +{ + uint64_t host_features; + + PMD_INIT_FUNC_TRACE(); + + /* Prepare guest_features: feature that driver wants to support */ + VIRTIO_CRYPTO_INIT_LOG_DBG("guest_features before negotiate = %" PRIx64, + req_features); + + /* Read device(host) feature bits */ + host_features = VTPCI_OPS(hw)->get_features(hw); + VIRTIO_CRYPTO_INIT_LOG_DBG("host_features before negotiate = %" PRIx64, + host_features); + + /* + * Negotiate features: Subset of device feature bits are written back + * guest feature bits. + */ + hw->guest_features = req_features; + hw->guest_features = vtpci_cryptodev_negotiate_features(hw, + host_features); + VIRTIO_CRYPTO_INIT_LOG_DBG("features after negotiate = %" PRIx64, + hw->guest_features); + + if (hw->modern) { + if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { + VIRTIO_CRYPTO_INIT_LOG_ERR( + "VIRTIO_F_VERSION_1 features is not enabled."); + return -1; + } + vtpci_cryptodev_set_status(hw, + VIRTIO_CONFIG_STATUS_FEATURES_OK); + if (!(vtpci_cryptodev_get_status(hw) & + VIRTIO_CONFIG_STATUS_FEATURES_OK)) { + VIRTIO_CRYPTO_INIT_LOG_ERR("failed to set FEATURES_OK " + "status!"); + return -1; + } + } + + hw->req_guest_features = req_features; + + return 0; +} + +/* reset device and renegotiate features if needed */ +static int +virtio_crypto_init_device(struct rte_cryptodev *cryptodev, + uint64_t req_features) +{ + struct virtio_crypto_hw *hw = cryptodev->data->dev_private; + struct virtio_crypto_config local_config; + struct virtio_crypto_config *config = &local_config; + + PMD_INIT_FUNC_TRACE(); + + /* Reset the device although not necessary at startup */ + vtpci_cryptodev_reset(hw); + + /* Tell the host we've noticed this device. */ + vtpci_cryptodev_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); + + /* Tell the host we've known how to drive the device. */ + vtpci_cryptodev_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); + if (virtio_negotiate_features(hw, req_features) < 0) + return -1; + + /* Get status of the device */ + vtpci_read_cryptodev_config(hw, + offsetof(struct virtio_crypto_config, status), + &config->status, sizeof(config->status)); + if (config->status != VIRTIO_CRYPTO_S_HW_READY) { + VIRTIO_CRYPTO_DRV_LOG_ERR("accelerator hardware is " + "not ready"); + return -1; + } + + /* Get number of data queues */ + vtpci_read_cryptodev_config(hw, + offsetof(struct virtio_crypto_config, max_dataqueues), + &config->max_dataqueues, + sizeof(config->max_dataqueues)); + hw->max_dataqueues = config->max_dataqueues; + + VIRTIO_CRYPTO_INIT_LOG_DBG("hw->max_dataqueues=%d", + hw->max_dataqueues); + + return 0; +} + +/* + * This function is based on probe() function + * It returns 0 on success. + */ +static int +crypto_virtio_create(const char *name, struct rte_pci_device *pci_dev, + struct rte_cryptodev_pmd_init_params *init_params) +{ + struct rte_cryptodev *cryptodev; + struct virtio_crypto_hw *hw; + + PMD_INIT_FUNC_TRACE(); + + cryptodev = rte_cryptodev_pmd_create(name, &pci_dev->device, + init_params); + if (cryptodev == NULL) + return -ENODEV; + + cryptodev->driver_id = cryptodev_virtio_driver_id; + cryptodev->dev_ops = &virtio_crypto_dev_ops; + + cryptodev->enqueue_burst = virtio_crypto_pkt_tx_burst; + cryptodev->dequeue_burst = virtio_crypto_pkt_rx_burst; + + cryptodev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO | + RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING; + + hw = cryptodev->data->dev_private; + hw->dev_id = cryptodev->data->dev_id; + hw->virtio_dev_capabilities = virtio_capabilities; + + VIRTIO_CRYPTO_INIT_LOG_DBG("dev %d vendorID=0x%x deviceID=0x%x", + cryptodev->data->dev_id, pci_dev->id.vendor_id, + pci_dev->id.device_id); + + /* pci device init */ + if (vtpci_cryptodev_init(pci_dev, hw)) + return -1; + + if (virtio_crypto_init_device(cryptodev, + VIRTIO_CRYPTO_PMD_GUEST_FEATURES) < 0) + return -1; + + return 0; +} + +static int +virtio_crypto_dev_uninit(struct rte_cryptodev *cryptodev) +{ + struct virtio_crypto_hw *hw = cryptodev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + if (rte_eal_process_type() == RTE_PROC_SECONDARY) + return -EPERM; + + if (cryptodev->data->dev_started) { + virtio_crypto_dev_stop(cryptodev); + virtio_crypto_dev_close(cryptodev); + } + + cryptodev->dev_ops = NULL; + cryptodev->enqueue_burst = NULL; + cryptodev->dequeue_burst = NULL; + + /* release control queue */ + virtio_crypto_queue_release(hw->cvq); + + rte_free(cryptodev->data); + cryptodev->data = NULL; + + VIRTIO_CRYPTO_DRV_LOG_INFO("dev_uninit completed"); + + return 0; +} + +static int +virtio_crypto_dev_configure(struct rte_cryptodev *cryptodev, + struct rte_cryptodev_config *config __rte_unused) +{ + struct virtio_crypto_hw *hw = cryptodev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + if (virtio_crypto_init_device(cryptodev, + VIRTIO_CRYPTO_PMD_GUEST_FEATURES) < 0) + return -1; + + /* setup control queue + * [0, 1, ... ,(config->max_dataqueues - 1)] are data queues + * config->max_dataqueues is the control queue + */ + if (virtio_crypto_ctrlq_setup(cryptodev, hw->max_dataqueues) < 0) { + VIRTIO_CRYPTO_INIT_LOG_ERR("control queue setup error"); + return -1; + } + virtio_crypto_ctrlq_start(cryptodev); + + return 0; +} + +static void +virtio_crypto_dev_stop(struct rte_cryptodev *dev) +{ + struct virtio_crypto_hw *hw = dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + VIRTIO_CRYPTO_DRV_LOG_DBG("virtio_dev_stop"); + + vtpci_cryptodev_reset(hw); + + virtio_crypto_dev_free_mbufs(dev); + virtio_crypto_free_queues(dev); + + dev->data->dev_started = 0; +} + +static int +virtio_crypto_dev_start(struct rte_cryptodev *dev) +{ + struct virtio_crypto_hw *hw = dev->data->dev_private; + + if (dev->data->dev_started) + return 0; + + /* Do final configuration before queue engine starts */ + virtio_crypto_dataq_start(dev); + vtpci_cryptodev_reinit_complete(hw); + + dev->data->dev_started = 1; + + return 0; +} + +static void +virtio_crypto_dev_free_mbufs(struct rte_cryptodev *dev) +{ + uint32_t i; + struct virtio_crypto_hw *hw = dev->data->dev_private; + + for (i = 0; i < hw->max_dataqueues; i++) { + VIRTIO_CRYPTO_INIT_LOG_DBG("Before freeing dataq[%d] used " + "and unused buf", i); + VIRTQUEUE_DUMP((struct virtqueue *) + dev->data->queue_pairs[i]); + + VIRTIO_CRYPTO_INIT_LOG_DBG("queue_pairs[%d]=%p", + i, dev->data->queue_pairs[i]); + + virtqueue_detatch_unused(dev->data->queue_pairs[i]); + + VIRTIO_CRYPTO_INIT_LOG_DBG("After freeing dataq[%d] used and " + "unused buf", i); + VIRTQUEUE_DUMP( + (struct virtqueue *)dev->data->queue_pairs[i]); + } +} + +static unsigned int +virtio_crypto_sym_get_session_private_size( + struct rte_cryptodev *dev __rte_unused) +{ + PMD_INIT_FUNC_TRACE(); + + return RTE_ALIGN_CEIL(sizeof(struct virtio_crypto_session), 16); +} + +static int +virtio_crypto_check_sym_session_paras( + struct rte_cryptodev *dev) +{ + struct virtio_crypto_hw *hw; + + PMD_INIT_FUNC_TRACE(); + + if (unlikely(dev == NULL)) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("dev is NULL"); + return -1; + } + if (unlikely(dev->data == NULL)) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("dev->data is NULL"); + return -1; + } + hw = dev->data->dev_private; + if (unlikely(hw == NULL)) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("hw is NULL"); + return -1; + } + if (unlikely(hw->cvq == NULL)) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("vq is NULL"); + return -1; + } + + return 0; +} + +static int +virtio_crypto_check_sym_clear_session_paras( + struct rte_cryptodev *dev, + struct rte_cryptodev_sym_session *sess) +{ + PMD_INIT_FUNC_TRACE(); + + if (sess == NULL) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("sym_session is NULL"); + return -1; + } + + return virtio_crypto_check_sym_session_paras(dev); +} + +#define NUM_ENTRY_SYM_CLEAR_SESSION 2 + +static void +virtio_crypto_sym_clear_session( + struct rte_cryptodev *dev, + struct rte_cryptodev_sym_session *sess) +{ + struct virtio_crypto_hw *hw; + struct virtqueue *vq; + struct virtio_crypto_session *session; + struct virtio_crypto_op_ctrl_req *ctrl; + struct vring_desc *desc; + uint8_t *status; + uint8_t needed = 1; + uint32_t head; + uint8_t *malloc_virt_addr; + uint64_t malloc_phys_addr; + uint8_t len_inhdr = sizeof(struct virtio_crypto_inhdr); + uint32_t len_op_ctrl_req = sizeof(struct virtio_crypto_op_ctrl_req); + uint32_t desc_offset = len_op_ctrl_req + len_inhdr; + + PMD_INIT_FUNC_TRACE(); + + if (virtio_crypto_check_sym_clear_session_paras(dev, sess) < 0) + return; + + hw = dev->data->dev_private; + vq = hw->cvq; + session = (struct virtio_crypto_session *)get_sym_session_private_data( + sess, cryptodev_virtio_driver_id); + if (session == NULL) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("Invalid session parameter"); + return; + } + + VIRTIO_CRYPTO_SESSION_LOG_INFO("vq->vq_desc_head_idx = %d, " + "vq = %p", vq->vq_desc_head_idx, vq); + + if (vq->vq_free_cnt < needed) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "vq->vq_free_cnt = %d is less than %d, " + "not enough", vq->vq_free_cnt, needed); + return; + } + + /* + * malloc memory to store information of ctrl request op, + * returned status and desc vring + */ + malloc_virt_addr = rte_malloc(NULL, len_op_ctrl_req + len_inhdr + + NUM_ENTRY_SYM_CLEAR_SESSION + * sizeof(struct vring_desc), RTE_CACHE_LINE_SIZE); + if (malloc_virt_addr == NULL) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("not enough heap room"); + return; + } + malloc_phys_addr = rte_malloc_virt2iova(malloc_virt_addr); + + /* assign ctrl request op part */ + ctrl = (struct virtio_crypto_op_ctrl_req *)malloc_virt_addr; + ctrl->header.opcode = VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION; + /* default data virtqueue is 0 */ + ctrl->header.queue_id = 0; + ctrl->u.destroy_session.session_id = session->session_id; + + /* status part */ + status = &(((struct virtio_crypto_inhdr *) + ((uint8_t *)malloc_virt_addr + len_op_ctrl_req))->status); + *status = VIRTIO_CRYPTO_ERR; + + /* indirect desc vring part */ + desc = (struct vring_desc *)((uint8_t *)malloc_virt_addr + + desc_offset); + + /* ctrl request part */ + desc[0].addr = malloc_phys_addr; + desc[0].len = len_op_ctrl_req; + desc[0].flags = VRING_DESC_F_NEXT; + desc[0].next = 1; + + /* status part */ + desc[1].addr = malloc_phys_addr + len_op_ctrl_req; + desc[1].len = len_inhdr; + desc[1].flags = VRING_DESC_F_WRITE; + + /* use only a single desc entry */ + head = vq->vq_desc_head_idx; + vq->vq_ring.desc[head].flags = VRING_DESC_F_INDIRECT; + vq->vq_ring.desc[head].addr = malloc_phys_addr + desc_offset; + vq->vq_ring.desc[head].len + = NUM_ENTRY_SYM_CLEAR_SESSION + * sizeof(struct vring_desc); + vq->vq_free_cnt -= needed; + + vq->vq_desc_head_idx = vq->vq_ring.desc[head].next; + + vq_update_avail_ring(vq, head); + vq_update_avail_idx(vq); + + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_queue_index = %d", + vq->vq_queue_index); + + virtqueue_notify(vq); + + rte_rmb(); + while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) { + rte_rmb(); + usleep(100); + } + + while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) { + uint32_t idx, desc_idx, used_idx; + struct vring_used_elem *uep; + + used_idx = (uint32_t)(vq->vq_used_cons_idx + & (vq->vq_nentries - 1)); + uep = &vq->vq_ring.used->ring[used_idx]; + idx = (uint32_t) uep->id; + desc_idx = idx; + while (vq->vq_ring.desc[desc_idx].flags + & VRING_DESC_F_NEXT) { + desc_idx = vq->vq_ring.desc[desc_idx].next; + vq->vq_free_cnt++; + } + + vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx; + vq->vq_desc_head_idx = idx; + vq->vq_used_cons_idx++; + vq->vq_free_cnt++; + } + + if (*status != VIRTIO_CRYPTO_OK) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("Close session failed " + "status=%"PRIu32", session_id=%"PRIu64"", + *status, session->session_id); + rte_free(malloc_virt_addr); + return; + } + + VIRTIO_CRYPTO_INIT_LOG_DBG("vq->vq_free_cnt=%d\n" + "vq->vq_desc_head_idx=%d", + vq->vq_free_cnt, vq->vq_desc_head_idx); + + VIRTIO_CRYPTO_SESSION_LOG_INFO("Close session %"PRIu64" successfully ", + session->session_id); + + memset(session, 0, sizeof(struct virtio_crypto_session)); + struct rte_mempool *sess_mp = rte_mempool_from_obj(session); + set_sym_session_private_data(sess, cryptodev_virtio_driver_id, NULL); + rte_mempool_put(sess_mp, session); + rte_free(malloc_virt_addr); +} + +static struct rte_crypto_cipher_xform * +virtio_crypto_get_cipher_xform(struct rte_crypto_sym_xform *xform) +{ + do { + if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) + return &xform->cipher; + + xform = xform->next; + } while (xform); + + return NULL; +} + +static struct rte_crypto_auth_xform * +virtio_crypto_get_auth_xform(struct rte_crypto_sym_xform *xform) +{ + do { + if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) + return &xform->auth; + + xform = xform->next; + } while (xform); + + return NULL; +} + +/** Get xform chain order */ +static int +virtio_crypto_get_chain_order(struct rte_crypto_sym_xform *xform) +{ + if (xform == NULL) + return -1; + + /* Cipher Only */ + if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER && + xform->next == NULL) + return VIRTIO_CRYPTO_CMD_CIPHER; + + /* Authentication Only */ + if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH && + xform->next == NULL) + return VIRTIO_CRYPTO_CMD_AUTH; + + /* Authenticate then Cipher */ + if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH && + xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER) + return VIRTIO_CRYPTO_CMD_HASH_CIPHER; + + /* Cipher then Authenticate */ + if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER && + xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH) + return VIRTIO_CRYPTO_CMD_CIPHER_HASH; + + return -1; +} + +static int +virtio_crypto_sym_pad_cipher_param( + struct virtio_crypto_cipher_session_para *para, + struct rte_crypto_cipher_xform *cipher_xform) +{ + switch (cipher_xform->algo) { + case RTE_CRYPTO_CIPHER_AES_CBC: + para->algo = VIRTIO_CRYPTO_CIPHER_AES_CBC; + break; + default: + VIRTIO_CRYPTO_SESSION_LOG_ERR("Crypto: Unsupported " + "Cipher alg %u", cipher_xform->algo); + return -1; + } + + para->keylen = cipher_xform->key.length; + switch (cipher_xform->op) { + case RTE_CRYPTO_CIPHER_OP_ENCRYPT: + para->op = VIRTIO_CRYPTO_OP_ENCRYPT; + break; + case RTE_CRYPTO_CIPHER_OP_DECRYPT: + para->op = VIRTIO_CRYPTO_OP_DECRYPT; + break; + default: + VIRTIO_CRYPTO_SESSION_LOG_ERR("Unsupported cipher operation " + "parameter"); + return -1; + } + + return 0; +} + +static int +virtio_crypto_sym_pad_auth_param( + struct virtio_crypto_op_ctrl_req *ctrl, + struct rte_crypto_auth_xform *auth_xform) +{ + uint32_t *algo; + struct virtio_crypto_alg_chain_session_para *para = + &(ctrl->u.sym_create_session.u.chain.para); + + switch (ctrl->u.sym_create_session.u.chain.para.hash_mode) { + case VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN: + algo = &(para->u.hash_param.algo); + break; + case VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH: + algo = &(para->u.mac_param.algo); + break; + default: + VIRTIO_CRYPTO_SESSION_LOG_ERR("Unsupported hash mode %u " + "specified", + ctrl->u.sym_create_session.u.chain.para.hash_mode); + return -1; + } + + switch (auth_xform->algo) { + case RTE_CRYPTO_AUTH_SHA1_HMAC: + *algo = VIRTIO_CRYPTO_MAC_HMAC_SHA1; + break; + default: + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "Crypto: Undefined Hash algo %u specified", + auth_xform->algo); + return -1; + } + + return 0; +} + +static int +virtio_crypto_sym_pad_op_ctrl_req( + struct virtio_crypto_op_ctrl_req *ctrl, + struct rte_crypto_sym_xform *xform, bool is_chainned, + uint8_t **cipher_key_data, uint8_t **auth_key_data, + struct virtio_crypto_session *session) +{ + int ret; + struct rte_crypto_auth_xform *auth_xform = NULL; + struct rte_crypto_cipher_xform *cipher_xform = NULL; + + /* Get cipher xform from crypto xform chain */ + cipher_xform = virtio_crypto_get_cipher_xform(xform); + if (cipher_xform) { + if (cipher_xform->iv.length > VIRTIO_CRYPTO_MAX_IV_SIZE) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "cipher IV size cannot be longer than %u", + VIRTIO_CRYPTO_MAX_IV_SIZE); + return -1; + } + if (is_chainned) + ret = virtio_crypto_sym_pad_cipher_param( + &ctrl->u.sym_create_session.u.chain.para + .cipher_param, cipher_xform); + else + ret = virtio_crypto_sym_pad_cipher_param( + &ctrl->u.sym_create_session.u.cipher.para, + cipher_xform); + + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "pad cipher parameter failed"); + return -1; + } + + *cipher_key_data = cipher_xform->key.data; + + session->iv.offset = cipher_xform->iv.offset; + session->iv.length = cipher_xform->iv.length; + } + + /* Get auth xform from crypto xform chain */ + auth_xform = virtio_crypto_get_auth_xform(xform); + if (auth_xform) { + /* FIXME: support VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED */ + struct virtio_crypto_alg_chain_session_para *para = + &(ctrl->u.sym_create_session.u.chain.para); + if (auth_xform->key.length) { + para->hash_mode = VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH; + para->u.mac_param.auth_key_len = + (uint32_t)auth_xform->key.length; + para->u.mac_param.hash_result_len = + auth_xform->digest_length; + + *auth_key_data = auth_xform->key.data; + } else { + para->hash_mode = VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN; + para->u.hash_param.hash_result_len = + auth_xform->digest_length; + } + + ret = virtio_crypto_sym_pad_auth_param(ctrl, auth_xform); + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("pad auth parameter " + "failed"); + return -1; + } + } + + return 0; +} + +static int +virtio_crypto_check_sym_configure_session_paras( + struct rte_cryptodev *dev, + struct rte_crypto_sym_xform *xform, + struct rte_cryptodev_sym_session *sym_sess, + struct rte_mempool *mempool) +{ + if (unlikely(xform == NULL) || unlikely(sym_sess == NULL) || + unlikely(mempool == NULL)) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("NULL pointer"); + return -1; + } + + if (virtio_crypto_check_sym_session_paras(dev) < 0) + return -1; + + return 0; +} + +static int +virtio_crypto_sym_configure_session( + struct rte_cryptodev *dev, + struct rte_crypto_sym_xform *xform, + struct rte_cryptodev_sym_session *sess, + struct rte_mempool *mempool) +{ + int ret; + struct virtio_crypto_session crypto_sess; + void *session_private = &crypto_sess; + struct virtio_crypto_session *session; + struct virtio_crypto_op_ctrl_req *ctrl_req; + enum virtio_crypto_cmd_id cmd_id; + uint8_t *cipher_key_data = NULL; + uint8_t *auth_key_data = NULL; + struct virtio_crypto_hw *hw; + struct virtqueue *control_vq; + + PMD_INIT_FUNC_TRACE(); + + ret = virtio_crypto_check_sym_configure_session_paras(dev, xform, + sess, mempool); + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR("Invalid parameters"); + return ret; + } + + if (rte_mempool_get(mempool, &session_private)) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "Couldn't get object from session mempool"); + return -ENOMEM; + } + + session = (struct virtio_crypto_session *)session_private; + memset(session, 0, sizeof(struct virtio_crypto_session)); + ctrl_req = &session->ctrl; + ctrl_req->header.opcode = VIRTIO_CRYPTO_CIPHER_CREATE_SESSION; + /* FIXME: support multiqueue */ + ctrl_req->header.queue_id = 0; + + hw = dev->data->dev_private; + control_vq = hw->cvq; + + cmd_id = virtio_crypto_get_chain_order(xform); + if (cmd_id == VIRTIO_CRYPTO_CMD_CIPHER_HASH) + ctrl_req->u.sym_create_session.u.chain.para.alg_chain_order + = VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH; + if (cmd_id == VIRTIO_CRYPTO_CMD_HASH_CIPHER) + ctrl_req->u.sym_create_session.u.chain.para.alg_chain_order + = VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER; + + switch (cmd_id) { + case VIRTIO_CRYPTO_CMD_CIPHER_HASH: + case VIRTIO_CRYPTO_CMD_HASH_CIPHER: + ctrl_req->u.sym_create_session.op_type + = VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING; + + ret = virtio_crypto_sym_pad_op_ctrl_req(ctrl_req, + xform, true, &cipher_key_data, &auth_key_data, session); + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "padding sym op ctrl req failed"); + goto error_out; + } + ret = virtio_crypto_send_command(control_vq, ctrl_req, + cipher_key_data, auth_key_data, session); + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "create session failed: %d", ret); + goto error_out; + } + break; + case VIRTIO_CRYPTO_CMD_CIPHER: + ctrl_req->u.sym_create_session.op_type + = VIRTIO_CRYPTO_SYM_OP_CIPHER; + ret = virtio_crypto_sym_pad_op_ctrl_req(ctrl_req, xform, + false, &cipher_key_data, &auth_key_data, session); + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "padding sym op ctrl req failed"); + goto error_out; + } + ret = virtio_crypto_send_command(control_vq, ctrl_req, + cipher_key_data, NULL, session); + if (ret < 0) { + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "create session failed: %d", ret); + goto error_out; + } + break; + default: + VIRTIO_CRYPTO_SESSION_LOG_ERR( + "Unsupported operation chain order parameter"); + goto error_out; + } + + set_sym_session_private_data(sess, dev->driver_id, + session_private); + + return 0; + +error_out: + return -1; +} + +static void +virtio_crypto_dev_info_get(struct rte_cryptodev *dev, + struct rte_cryptodev_info *info) +{ + struct virtio_crypto_hw *hw = dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + if (info != NULL) { + info->driver_id = cryptodev_virtio_driver_id; + info->feature_flags = dev->feature_flags; + info->max_nb_queue_pairs = hw->max_dataqueues; + /* No limit of number of sessions */ + info->sym.max_nb_sessions = 0; + info->capabilities = hw->virtio_dev_capabilities; + } +} + +static int +crypto_virtio_pci_probe( + struct rte_pci_driver *pci_drv __rte_unused, + struct rte_pci_device *pci_dev) +{ + struct rte_cryptodev_pmd_init_params init_params = { + .name = "", + .socket_id = rte_socket_id(), + .private_data_size = sizeof(struct virtio_crypto_hw) + }; + char name[RTE_CRYPTODEV_NAME_MAX_LEN]; + + VIRTIO_CRYPTO_DRV_LOG_DBG("Found Crypto device at %02x:%02x.%x", + pci_dev->addr.bus, + pci_dev->addr.devid, + pci_dev->addr.function); + + rte_pci_device_name(&pci_dev->addr, name, sizeof(name)); + + return crypto_virtio_create(name, pci_dev, &init_params); +} + +static int +crypto_virtio_pci_remove( + struct rte_pci_device *pci_dev __rte_unused) +{ + struct rte_cryptodev *cryptodev; + char cryptodev_name[RTE_CRYPTODEV_NAME_MAX_LEN]; + + if (pci_dev == NULL) + return -EINVAL; + + rte_pci_device_name(&pci_dev->addr, cryptodev_name, + sizeof(cryptodev_name)); + + cryptodev = rte_cryptodev_pmd_get_named_dev(cryptodev_name); + if (cryptodev == NULL) + return -ENODEV; + + return virtio_crypto_dev_uninit(cryptodev); +} + +static struct rte_pci_driver rte_virtio_crypto_driver = { + .id_table = pci_id_virtio_crypto_map, + .drv_flags = 0, + .probe = crypto_virtio_pci_probe, + .remove = crypto_virtio_pci_remove +}; + +static struct cryptodev_driver virtio_crypto_drv; + +RTE_PMD_REGISTER_PCI(CRYPTODEV_NAME_VIRTIO_PMD, rte_virtio_crypto_driver); +RTE_PMD_REGISTER_CRYPTO_DRIVER(virtio_crypto_drv, + rte_virtio_crypto_driver.driver, + cryptodev_virtio_driver_id); + +RTE_INIT(virtio_crypto_init_log) +{ + virtio_crypto_logtype_init = rte_log_register("pmd.crypto.virtio.init"); + if (virtio_crypto_logtype_init >= 0) + rte_log_set_level(virtio_crypto_logtype_init, RTE_LOG_NOTICE); + + virtio_crypto_logtype_session = + rte_log_register("pmd.crypto.virtio.session"); + if (virtio_crypto_logtype_session >= 0) + rte_log_set_level(virtio_crypto_logtype_session, + RTE_LOG_NOTICE); + + virtio_crypto_logtype_rx = rte_log_register("pmd.crypto.virtio.rx"); + if (virtio_crypto_logtype_rx >= 0) + rte_log_set_level(virtio_crypto_logtype_rx, RTE_LOG_NOTICE); + + virtio_crypto_logtype_tx = rte_log_register("pmd.crypto.virtio.tx"); + if (virtio_crypto_logtype_tx >= 0) + rte_log_set_level(virtio_crypto_logtype_tx, RTE_LOG_NOTICE); + + virtio_crypto_logtype_driver = + rte_log_register("pmd.crypto.virtio.driver"); + if (virtio_crypto_logtype_driver >= 0) + rte_log_set_level(virtio_crypto_logtype_driver, RTE_LOG_NOTICE); +} diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.h b/src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.h new file mode 100644 index 00000000..0fd7b722 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_cryptodev.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTIO_CRYPTODEV_H_ +#define _VIRTIO_CRYPTODEV_H_ + +#include "virtio_crypto.h" +#include "virtio_pci.h" +#include "virtio_ring.h" + +/* Features desired/implemented by this driver. */ +#define VIRTIO_CRYPTO_PMD_GUEST_FEATURES (1ULL << VIRTIO_F_VERSION_1) + +#define CRYPTODEV_NAME_VIRTIO_PMD crypto_virtio + +#define NUM_ENTRY_VIRTIO_CRYPTO_OP 7 + +#define VIRTIO_CRYPTO_MAX_IV_SIZE 16 + +extern uint8_t cryptodev_virtio_driver_id; + +enum virtio_crypto_cmd_id { + VIRTIO_CRYPTO_CMD_CIPHER = 0, + VIRTIO_CRYPTO_CMD_AUTH = 1, + VIRTIO_CRYPTO_CMD_CIPHER_HASH = 2, + VIRTIO_CRYPTO_CMD_HASH_CIPHER = 3 +}; + +struct virtio_crypto_op_cookie { + struct virtio_crypto_op_data_req data_req; + struct virtio_crypto_inhdr inhdr; + struct vring_desc desc[NUM_ENTRY_VIRTIO_CRYPTO_OP]; + uint8_t iv[VIRTIO_CRYPTO_MAX_IV_SIZE]; +}; + +/* + * Control queue function prototype + */ +void virtio_crypto_ctrlq_start(struct rte_cryptodev *dev); + +/* + * Data queue function prototype + */ +void virtio_crypto_dataq_start(struct rte_cryptodev *dev); + +int virtio_crypto_queue_setup(struct rte_cryptodev *dev, + int queue_type, + uint16_t vtpci_queue_idx, + uint16_t nb_desc, + int socket_id, + struct virtqueue **pvq); + +void virtio_crypto_queue_release(struct virtqueue *vq); + +uint16_t virtio_crypto_pkt_tx_burst(void *tx_queue, + struct rte_crypto_op **tx_pkts, + uint16_t nb_pkts); + +uint16_t virtio_crypto_pkt_rx_burst(void *tx_queue, + struct rte_crypto_op **tx_pkts, + uint16_t nb_pkts); + +#endif /* _VIRTIO_CRYPTODEV_H_ */ diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_logs.h b/src/spdk/dpdk/drivers/crypto/virtio/virtio_logs.h new file mode 100644 index 00000000..26a286cf --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_logs.h @@ -0,0 +1,91 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTIO_LOGS_H_ +#define _VIRTIO_LOGS_H_ + +#include + +#define PMD_INIT_LOG(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, RTE_LOGTYPE_PMD, \ + "PMD: %s(): " fmt "\n", __func__, ##args) + +#define PMD_INIT_FUNC_TRACE() PMD_INIT_LOG(DEBUG, " >>") + +extern int virtio_crypto_logtype_init; + +#define VIRTIO_CRYPTO_INIT_LOG_IMPL(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, virtio_crypto_logtype_init, \ + "INIT: %s(): " fmt "\n", __func__, ##args) + +#define VIRTIO_CRYPTO_INIT_LOG_INFO(fmt, args...) \ + VIRTIO_CRYPTO_INIT_LOG_IMPL(INFO, fmt, ## args) + +#define VIRTIO_CRYPTO_INIT_LOG_DBG(fmt, args...) \ + VIRTIO_CRYPTO_INIT_LOG_IMPL(DEBUG, fmt, ## args) + +#define VIRTIO_CRYPTO_INIT_LOG_ERR(fmt, args...) \ + VIRTIO_CRYPTO_INIT_LOG_IMPL(ERR, fmt, ## args) + +extern int virtio_crypto_logtype_session; + +#define VIRTIO_CRYPTO_SESSION_LOG_IMPL(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, virtio_crypto_logtype_session, \ + "SESSION: %s(): " fmt "\n", __func__, ##args) + +#define VIRTIO_CRYPTO_SESSION_LOG_INFO(fmt, args...) \ + VIRTIO_CRYPTO_SESSION_LOG_IMPL(INFO, fmt, ## args) + +#define VIRTIO_CRYPTO_SESSION_LOG_DBG(fmt, args...) \ + VIRTIO_CRYPTO_SESSION_LOG_IMPL(DEBUG, fmt, ## args) + +#define VIRTIO_CRYPTO_SESSION_LOG_ERR(fmt, args...) \ + VIRTIO_CRYPTO_SESSION_LOG_IMPL(ERR, fmt, ## args) + +extern int virtio_crypto_logtype_rx; + +#define VIRTIO_CRYPTO_RX_LOG_IMPL(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, virtio_crypto_logtype_rx, \ + "RX: %s(): " fmt "\n", __func__, ##args) + +#define VIRTIO_CRYPTO_RX_LOG_INFO(fmt, args...) \ + VIRTIO_CRYPTO_RX_LOG_IMPL(INFO, fmt, ## args) + +#define VIRTIO_CRYPTO_RX_LOG_DBG(fmt, args...) \ + VIRTIO_CRYPTO_RX_LOG_IMPL(DEBUG, fmt, ## args) + +#define VIRTIO_CRYPTO_RX_LOG_ERR(fmt, args...) \ + VIRTIO_CRYPTO_RX_LOG_IMPL(ERR, fmt, ## args) + +extern int virtio_crypto_logtype_tx; + +#define VIRTIO_CRYPTO_TX_LOG_IMPL(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, virtio_crypto_logtype_tx, \ + "TX: %s(): " fmt "\n", __func__, ##args) + +#define VIRTIO_CRYPTO_TX_LOG_INFO(fmt, args...) \ + VIRTIO_CRYPTO_TX_LOG_IMPL(INFO, fmt, ## args) + +#define VIRTIO_CRYPTO_TX_LOG_DBG(fmt, args...) \ + VIRTIO_CRYPTO_TX_LOG_IMPL(DEBUG, fmt, ## args) + +#define VIRTIO_CRYPTO_TX_LOG_ERR(fmt, args...) \ + VIRTIO_CRYPTO_TX_LOG_IMPL(ERR, fmt, ## args) + +extern int virtio_crypto_logtype_driver; + +#define VIRTIO_CRYPTO_DRV_LOG_IMPL(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, virtio_crypto_logtype_driver, \ + "DRIVER: %s(): " fmt "\n", __func__, ##args) + +#define VIRTIO_CRYPTO_DRV_LOG_INFO(fmt, args...) \ + VIRTIO_CRYPTO_DRV_LOG_IMPL(INFO, fmt, ## args) + +#define VIRTIO_CRYPTO_DRV_LOG_DBG(fmt, args...) \ + VIRTIO_CRYPTO_DRV_LOG_IMPL(DEBUG, fmt, ## args) + +#define VIRTIO_CRYPTO_DRV_LOG_ERR(fmt, args...) \ + VIRTIO_CRYPTO_DRV_LOG_IMPL(ERR, fmt, ## args) + +#endif /* _VIRTIO_LOGS_H_ */ diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.c b/src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.c new file mode 100644 index 00000000..832c465b --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.c @@ -0,0 +1,462 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#include + +#ifdef RTE_EXEC_ENV_LINUXAPP + #include + #include +#endif + +#include +#include + +#include "virtio_pci.h" +#include "virtqueue.h" + +/* + * Following macros are derived from linux/pci_regs.h, however, + * we can't simply include that header here, as there is no such + * file for non-Linux platform. + */ +#define PCI_CAPABILITY_LIST 0x34 +#define PCI_CAP_ID_VNDR 0x09 +#define PCI_CAP_ID_MSIX 0x11 + +/* + * The remaining space is defined by each driver as the per-driver + * configuration space. + */ +#define VIRTIO_PCI_CONFIG(hw) \ + (((hw)->use_msix == VIRTIO_MSIX_ENABLED) ? 24 : 20) + +struct virtio_hw_internal virtio_hw_internal[RTE_MAX_VIRTIO_CRYPTO]; + +static inline int +check_vq_phys_addr_ok(struct virtqueue *vq) +{ + /* Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit, + * and only accepts 32 bit page frame number. + * Check if the allocated physical memory exceeds 16TB. + */ + if ((vq->vq_ring_mem + vq->vq_ring_size - 1) >> + (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) { + VIRTIO_CRYPTO_INIT_LOG_ERR("vring address shouldn't be above 16TB!"); + return 0; + } + + return 1; +} + +static inline void +io_write64_twopart(uint64_t val, uint32_t *lo, uint32_t *hi) +{ + rte_write32(val & ((1ULL << 32) - 1), lo); + rte_write32(val >> 32, hi); +} + +static void +modern_read_dev_config(struct virtio_crypto_hw *hw, size_t offset, + void *dst, int length) +{ + int i; + uint8_t *p; + uint8_t old_gen, new_gen; + + do { + old_gen = rte_read8(&hw->common_cfg->config_generation); + + p = dst; + for (i = 0; i < length; i++) + *p++ = rte_read8((uint8_t *)hw->dev_cfg + offset + i); + + new_gen = rte_read8(&hw->common_cfg->config_generation); + } while (old_gen != new_gen); +} + +static void +modern_write_dev_config(struct virtio_crypto_hw *hw, size_t offset, + const void *src, int length) +{ + int i; + const uint8_t *p = src; + + for (i = 0; i < length; i++) + rte_write8((*p++), (((uint8_t *)hw->dev_cfg) + offset + i)); +} + +static uint64_t +modern_get_features(struct virtio_crypto_hw *hw) +{ + uint32_t features_lo, features_hi; + + rte_write32(0, &hw->common_cfg->device_feature_select); + features_lo = rte_read32(&hw->common_cfg->device_feature); + + rte_write32(1, &hw->common_cfg->device_feature_select); + features_hi = rte_read32(&hw->common_cfg->device_feature); + + return ((uint64_t)features_hi << 32) | features_lo; +} + +static void +modern_set_features(struct virtio_crypto_hw *hw, uint64_t features) +{ + rte_write32(0, &hw->common_cfg->guest_feature_select); + rte_write32(features & ((1ULL << 32) - 1), + &hw->common_cfg->guest_feature); + + rte_write32(1, &hw->common_cfg->guest_feature_select); + rte_write32(features >> 32, + &hw->common_cfg->guest_feature); +} + +static uint8_t +modern_get_status(struct virtio_crypto_hw *hw) +{ + return rte_read8(&hw->common_cfg->device_status); +} + +static void +modern_set_status(struct virtio_crypto_hw *hw, uint8_t status) +{ + rte_write8(status, &hw->common_cfg->device_status); +} + +static void +modern_reset(struct virtio_crypto_hw *hw) +{ + modern_set_status(hw, VIRTIO_CONFIG_STATUS_RESET); + modern_get_status(hw); +} + +static uint8_t +modern_get_isr(struct virtio_crypto_hw *hw) +{ + return rte_read8(hw->isr); +} + +static uint16_t +modern_set_config_irq(struct virtio_crypto_hw *hw, uint16_t vec) +{ + rte_write16(vec, &hw->common_cfg->msix_config); + return rte_read16(&hw->common_cfg->msix_config); +} + +static uint16_t +modern_set_queue_irq(struct virtio_crypto_hw *hw, struct virtqueue *vq, + uint16_t vec) +{ + rte_write16(vq->vq_queue_index, &hw->common_cfg->queue_select); + rte_write16(vec, &hw->common_cfg->queue_msix_vector); + return rte_read16(&hw->common_cfg->queue_msix_vector); +} + +static uint16_t +modern_get_queue_num(struct virtio_crypto_hw *hw, uint16_t queue_id) +{ + rte_write16(queue_id, &hw->common_cfg->queue_select); + return rte_read16(&hw->common_cfg->queue_size); +} + +static int +modern_setup_queue(struct virtio_crypto_hw *hw, struct virtqueue *vq) +{ + uint64_t desc_addr, avail_addr, used_addr; + uint16_t notify_off; + + if (!check_vq_phys_addr_ok(vq)) + return -1; + + desc_addr = vq->vq_ring_mem; + avail_addr = desc_addr + vq->vq_nentries * sizeof(struct vring_desc); + used_addr = RTE_ALIGN_CEIL(avail_addr + offsetof(struct vring_avail, + ring[vq->vq_nentries]), + VIRTIO_PCI_VRING_ALIGN); + + rte_write16(vq->vq_queue_index, &hw->common_cfg->queue_select); + + io_write64_twopart(desc_addr, &hw->common_cfg->queue_desc_lo, + &hw->common_cfg->queue_desc_hi); + io_write64_twopart(avail_addr, &hw->common_cfg->queue_avail_lo, + &hw->common_cfg->queue_avail_hi); + io_write64_twopart(used_addr, &hw->common_cfg->queue_used_lo, + &hw->common_cfg->queue_used_hi); + + notify_off = rte_read16(&hw->common_cfg->queue_notify_off); + vq->notify_addr = (void *)((uint8_t *)hw->notify_base + + notify_off * hw->notify_off_multiplier); + + rte_write16(1, &hw->common_cfg->queue_enable); + + VIRTIO_CRYPTO_INIT_LOG_DBG("queue %u addresses:", vq->vq_queue_index); + VIRTIO_CRYPTO_INIT_LOG_DBG("\t desc_addr: %" PRIx64, desc_addr); + VIRTIO_CRYPTO_INIT_LOG_DBG("\t aval_addr: %" PRIx64, avail_addr); + VIRTIO_CRYPTO_INIT_LOG_DBG("\t used_addr: %" PRIx64, used_addr); + VIRTIO_CRYPTO_INIT_LOG_DBG("\t notify addr: %p (notify offset: %u)", + vq->notify_addr, notify_off); + + return 0; +} + +static void +modern_del_queue(struct virtio_crypto_hw *hw, struct virtqueue *vq) +{ + rte_write16(vq->vq_queue_index, &hw->common_cfg->queue_select); + + io_write64_twopart(0, &hw->common_cfg->queue_desc_lo, + &hw->common_cfg->queue_desc_hi); + io_write64_twopart(0, &hw->common_cfg->queue_avail_lo, + &hw->common_cfg->queue_avail_hi); + io_write64_twopart(0, &hw->common_cfg->queue_used_lo, + &hw->common_cfg->queue_used_hi); + + rte_write16(0, &hw->common_cfg->queue_enable); +} + +static void +modern_notify_queue(struct virtio_crypto_hw *hw __rte_unused, + struct virtqueue *vq) +{ + rte_write16(vq->vq_queue_index, vq->notify_addr); +} + +const struct virtio_pci_ops virtio_crypto_modern_ops = { + .read_dev_cfg = modern_read_dev_config, + .write_dev_cfg = modern_write_dev_config, + .reset = modern_reset, + .get_status = modern_get_status, + .set_status = modern_set_status, + .get_features = modern_get_features, + .set_features = modern_set_features, + .get_isr = modern_get_isr, + .set_config_irq = modern_set_config_irq, + .set_queue_irq = modern_set_queue_irq, + .get_queue_num = modern_get_queue_num, + .setup_queue = modern_setup_queue, + .del_queue = modern_del_queue, + .notify_queue = modern_notify_queue, +}; + +void +vtpci_read_cryptodev_config(struct virtio_crypto_hw *hw, size_t offset, + void *dst, int length) +{ + VTPCI_OPS(hw)->read_dev_cfg(hw, offset, dst, length); +} + +void +vtpci_write_cryptodev_config(struct virtio_crypto_hw *hw, size_t offset, + const void *src, int length) +{ + VTPCI_OPS(hw)->write_dev_cfg(hw, offset, src, length); +} + +uint64_t +vtpci_cryptodev_negotiate_features(struct virtio_crypto_hw *hw, + uint64_t host_features) +{ + uint64_t features; + + /* + * Limit negotiated features to what the driver, virtqueue, and + * host all support. + */ + features = host_features & hw->guest_features; + VTPCI_OPS(hw)->set_features(hw, features); + + return features; +} + +void +vtpci_cryptodev_reset(struct virtio_crypto_hw *hw) +{ + VTPCI_OPS(hw)->set_status(hw, VIRTIO_CONFIG_STATUS_RESET); + /* flush status write */ + VTPCI_OPS(hw)->get_status(hw); +} + +void +vtpci_cryptodev_reinit_complete(struct virtio_crypto_hw *hw) +{ + vtpci_cryptodev_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER_OK); +} + +void +vtpci_cryptodev_set_status(struct virtio_crypto_hw *hw, uint8_t status) +{ + if (status != VIRTIO_CONFIG_STATUS_RESET) + status |= VTPCI_OPS(hw)->get_status(hw); + + VTPCI_OPS(hw)->set_status(hw, status); +} + +uint8_t +vtpci_cryptodev_get_status(struct virtio_crypto_hw *hw) +{ + return VTPCI_OPS(hw)->get_status(hw); +} + +uint8_t +vtpci_cryptodev_isr(struct virtio_crypto_hw *hw) +{ + return VTPCI_OPS(hw)->get_isr(hw); +} + +static void * +get_cfg_addr(struct rte_pci_device *dev, struct virtio_pci_cap *cap) +{ + uint8_t bar = cap->bar; + uint32_t length = cap->length; + uint32_t offset = cap->offset; + uint8_t *base; + + if (bar >= PCI_MAX_RESOURCE) { + VIRTIO_CRYPTO_INIT_LOG_ERR("invalid bar: %u", bar); + return NULL; + } + + if (offset + length < offset) { + VIRTIO_CRYPTO_INIT_LOG_ERR("offset(%u) + length(%u) overflows", + offset, length); + return NULL; + } + + if (offset + length > dev->mem_resource[bar].len) { + VIRTIO_CRYPTO_INIT_LOG_ERR( + "invalid cap: overflows bar space: %u > %" PRIu64, + offset + length, dev->mem_resource[bar].len); + return NULL; + } + + base = dev->mem_resource[bar].addr; + if (base == NULL) { + VIRTIO_CRYPTO_INIT_LOG_ERR("bar %u base addr is NULL", bar); + return NULL; + } + + return base + offset; +} + +#define PCI_MSIX_ENABLE 0x8000 + +static int +virtio_read_caps(struct rte_pci_device *dev, struct virtio_crypto_hw *hw) +{ + uint8_t pos; + struct virtio_pci_cap cap; + int ret; + + if (rte_pci_map_device(dev)) { + VIRTIO_CRYPTO_INIT_LOG_DBG("failed to map pci device!"); + return -1; + } + + ret = rte_pci_read_config(dev, &pos, 1, PCI_CAPABILITY_LIST); + if (ret < 0) { + VIRTIO_CRYPTO_INIT_LOG_DBG("failed to read pci capability list"); + return -1; + } + + while (pos) { + ret = rte_pci_read_config(dev, &cap, sizeof(cap), pos); + if (ret < 0) { + VIRTIO_CRYPTO_INIT_LOG_ERR( + "failed to read pci cap at pos: %x", pos); + break; + } + + if (cap.cap_vndr == PCI_CAP_ID_MSIX) { + /* Transitional devices would also have this capability, + * that's why we also check if msix is enabled. + * 1st byte is cap ID; 2nd byte is the position of next + * cap; next two bytes are the flags. + */ + uint16_t flags = ((uint16_t *)&cap)[1]; + + if (flags & PCI_MSIX_ENABLE) + hw->use_msix = VIRTIO_MSIX_ENABLED; + else + hw->use_msix = VIRTIO_MSIX_DISABLED; + } + + if (cap.cap_vndr != PCI_CAP_ID_VNDR) { + VIRTIO_CRYPTO_INIT_LOG_DBG( + "[%2x] skipping non VNDR cap id: %02x", + pos, cap.cap_vndr); + goto next; + } + + VIRTIO_CRYPTO_INIT_LOG_DBG( + "[%2x] cfg type: %u, bar: %u, offset: %04x, len: %u", + pos, cap.cfg_type, cap.bar, cap.offset, cap.length); + + switch (cap.cfg_type) { + case VIRTIO_PCI_CAP_COMMON_CFG: + hw->common_cfg = get_cfg_addr(dev, &cap); + break; + case VIRTIO_PCI_CAP_NOTIFY_CFG: + rte_pci_read_config(dev, &hw->notify_off_multiplier, + 4, pos + sizeof(cap)); + hw->notify_base = get_cfg_addr(dev, &cap); + break; + case VIRTIO_PCI_CAP_DEVICE_CFG: + hw->dev_cfg = get_cfg_addr(dev, &cap); + break; + case VIRTIO_PCI_CAP_ISR_CFG: + hw->isr = get_cfg_addr(dev, &cap); + break; + } + +next: + pos = cap.cap_next; + } + + if (hw->common_cfg == NULL || hw->notify_base == NULL || + hw->dev_cfg == NULL || hw->isr == NULL) { + VIRTIO_CRYPTO_INIT_LOG_INFO("no modern virtio pci device found."); + return -1; + } + + VIRTIO_CRYPTO_INIT_LOG_INFO("found modern virtio pci device."); + + VIRTIO_CRYPTO_INIT_LOG_DBG("common cfg mapped at: %p", hw->common_cfg); + VIRTIO_CRYPTO_INIT_LOG_DBG("device cfg mapped at: %p", hw->dev_cfg); + VIRTIO_CRYPTO_INIT_LOG_DBG("isr cfg mapped at: %p", hw->isr); + VIRTIO_CRYPTO_INIT_LOG_DBG("notify base: %p, notify off multiplier: %u", + hw->notify_base, hw->notify_off_multiplier); + + return 0; +} + +/* + * Return -1: + * if there is error mapping with VFIO/UIO. + * if port map error when driver type is KDRV_NONE. + * if whitelisted but driver type is KDRV_UNKNOWN. + * Return 1 if kernel driver is managing the device. + * Return 0 on success. + */ +int +vtpci_cryptodev_init(struct rte_pci_device *dev, struct virtio_crypto_hw *hw) +{ + /* + * Try if we can succeed reading virtio pci caps, which exists + * only on modern pci device. If failed, we fallback to legacy + * virtio handling. + */ + if (virtio_read_caps(dev, hw) == 0) { + VIRTIO_CRYPTO_INIT_LOG_INFO("modern virtio pci detected."); + virtio_hw_internal[hw->dev_id].vtpci_ops = + &virtio_crypto_modern_ops; + hw->modern = 1; + return 0; + } + + /* + * virtio crypto conforms to virtio 1.0 and doesn't support + * legacy mode + */ + return -1; +} diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.h b/src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.h new file mode 100644 index 00000000..604ec366 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_pci.h @@ -0,0 +1,253 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTIO_PCI_H_ +#define _VIRTIO_PCI_H_ + +#include + +#include +#include +#include + +#include "virtio_crypto.h" + +struct virtqueue; + +/* VirtIO PCI vendor/device ID. */ +#define VIRTIO_CRYPTO_PCI_VENDORID 0x1AF4 +#define VIRTIO_CRYPTO_PCI_DEVICEID 0x1054 + +/* VirtIO ABI version, this must match exactly. */ +#define VIRTIO_PCI_ABI_VERSION 0 + +/* + * VirtIO Header, located in BAR 0. + */ +#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO)*/ +#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */ +#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */ +#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */ +#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */ +#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */ +#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */ +#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading + * also clears the register (8, RO) + */ +/* Only if MSIX is enabled: */ + +/* configuration change vector (16, RW) */ +#define VIRTIO_MSI_CONFIG_VECTOR 20 +/* vector for selected VQ notifications */ +#define VIRTIO_MSI_QUEUE_VECTOR 22 + +/* The bit of the ISR which indicates a device has an interrupt. */ +#define VIRTIO_PCI_ISR_INTR 0x1 +/* The bit of the ISR which indicates a device configuration change. */ +#define VIRTIO_PCI_ISR_CONFIG 0x2 +/* Vector value used to disable MSI for queue. */ +#define VIRTIO_MSI_NO_VECTOR 0xFFFF + +/* Status byte for guest to report progress. */ +#define VIRTIO_CONFIG_STATUS_RESET 0x00 +#define VIRTIO_CONFIG_STATUS_ACK 0x01 +#define VIRTIO_CONFIG_STATUS_DRIVER 0x02 +#define VIRTIO_CONFIG_STATUS_DRIVER_OK 0x04 +#define VIRTIO_CONFIG_STATUS_FEATURES_OK 0x08 +#define VIRTIO_CONFIG_STATUS_FAILED 0x80 + +/* + * Each virtqueue indirect descriptor list must be physically contiguous. + * To allow us to malloc(9) each list individually, limit the number + * supported to what will fit in one page. With 4KB pages, this is a limit + * of 256 descriptors. If there is ever a need for more, we can switch to + * contigmalloc(9) for the larger allocations, similar to what + * bus_dmamem_alloc(9) does. + * + * Note the sizeof(struct vring_desc) is 16 bytes. + */ +#define VIRTIO_MAX_INDIRECT ((int) (PAGE_SIZE / 16)) + +/* Do we get callbacks when the ring is completely used, even if we've + * suppressed them? + */ +#define VIRTIO_F_NOTIFY_ON_EMPTY 24 + +/* Can the device handle any descriptor layout? */ +#define VIRTIO_F_ANY_LAYOUT 27 + +/* We support indirect buffer descriptors */ +#define VIRTIO_RING_F_INDIRECT_DESC 28 + +#define VIRTIO_F_VERSION_1 32 +#define VIRTIO_F_IOMMU_PLATFORM 33 + +/* The Guest publishes the used index for which it expects an interrupt + * at the end of the avail ring. Host should ignore the avail->flags field. + */ +/* The Host publishes the avail index for which it expects a kick + * at the end of the used ring. Guest should ignore the used->flags field. + */ +#define VIRTIO_RING_F_EVENT_IDX 29 + +/* Common configuration */ +#define VIRTIO_PCI_CAP_COMMON_CFG 1 +/* Notifications */ +#define VIRTIO_PCI_CAP_NOTIFY_CFG 2 +/* ISR Status */ +#define VIRTIO_PCI_CAP_ISR_CFG 3 +/* Device specific configuration */ +#define VIRTIO_PCI_CAP_DEVICE_CFG 4 +/* PCI configuration access */ +#define VIRTIO_PCI_CAP_PCI_CFG 5 + +/* This is the PCI capability header: */ +struct virtio_pci_cap { + uint8_t cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */ + uint8_t cap_next; /* Generic PCI field: next ptr. */ + uint8_t cap_len; /* Generic PCI field: capability length */ + uint8_t cfg_type; /* Identifies the structure. */ + uint8_t bar; /* Where to find it. */ + uint8_t padding[3]; /* Pad to full dword. */ + uint32_t offset; /* Offset within bar. */ + uint32_t length; /* Length of the structure, in bytes. */ +}; + +struct virtio_pci_notify_cap { + struct virtio_pci_cap cap; + uint32_t notify_off_multiplier; /* Multiplier for queue_notify_off. */ +}; + +/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */ +struct virtio_pci_common_cfg { + /* About the whole device. */ + uint32_t device_feature_select; /* read-write */ + uint32_t device_feature; /* read-only */ + uint32_t guest_feature_select; /* read-write */ + uint32_t guest_feature; /* read-write */ + uint16_t msix_config; /* read-write */ + uint16_t num_queues; /* read-only */ + uint8_t device_status; /* read-write */ + uint8_t config_generation; /* read-only */ + + /* About a specific virtqueue. */ + uint16_t queue_select; /* read-write */ + uint16_t queue_size; /* read-write, power of 2. */ + uint16_t queue_msix_vector; /* read-write */ + uint16_t queue_enable; /* read-write */ + uint16_t queue_notify_off; /* read-only */ + uint32_t queue_desc_lo; /* read-write */ + uint32_t queue_desc_hi; /* read-write */ + uint32_t queue_avail_lo; /* read-write */ + uint32_t queue_avail_hi; /* read-write */ + uint32_t queue_used_lo; /* read-write */ + uint32_t queue_used_hi; /* read-write */ +}; + +struct virtio_crypto_hw; + +struct virtio_pci_ops { + void (*read_dev_cfg)(struct virtio_crypto_hw *hw, size_t offset, + void *dst, int len); + void (*write_dev_cfg)(struct virtio_crypto_hw *hw, size_t offset, + const void *src, int len); + void (*reset)(struct virtio_crypto_hw *hw); + + uint8_t (*get_status)(struct virtio_crypto_hw *hw); + void (*set_status)(struct virtio_crypto_hw *hw, uint8_t status); + + uint64_t (*get_features)(struct virtio_crypto_hw *hw); + void (*set_features)(struct virtio_crypto_hw *hw, uint64_t features); + + uint8_t (*get_isr)(struct virtio_crypto_hw *hw); + + uint16_t (*set_config_irq)(struct virtio_crypto_hw *hw, uint16_t vec); + + uint16_t (*set_queue_irq)(struct virtio_crypto_hw *hw, + struct virtqueue *vq, uint16_t vec); + + uint16_t (*get_queue_num)(struct virtio_crypto_hw *hw, + uint16_t queue_id); + int (*setup_queue)(struct virtio_crypto_hw *hw, struct virtqueue *vq); + void (*del_queue)(struct virtio_crypto_hw *hw, struct virtqueue *vq); + void (*notify_queue)(struct virtio_crypto_hw *hw, struct virtqueue *vq); +}; + +struct virtio_crypto_hw { + /* control queue */ + struct virtqueue *cvq; + uint16_t dev_id; + uint16_t max_dataqueues; + uint64_t req_guest_features; + uint64_t guest_features; + uint8_t use_msix; + uint8_t modern; + uint32_t notify_off_multiplier; + uint8_t *isr; + uint16_t *notify_base; + struct virtio_pci_common_cfg *common_cfg; + struct virtio_crypto_config *dev_cfg; + const struct rte_cryptodev_capabilities *virtio_dev_capabilities; +}; + +/* + * While virtio_crypto_hw is stored in shared memory, this structure stores + * some infos that may vary in the multiple process model locally. + * For example, the vtpci_ops pointer. + */ +struct virtio_hw_internal { + const struct virtio_pci_ops *vtpci_ops; + struct rte_pci_ioport io; +}; + +#define VTPCI_OPS(hw) (virtio_hw_internal[(hw)->dev_id].vtpci_ops) +#define VTPCI_IO(hw) (&virtio_hw_internal[(hw)->dev_id].io) + +extern struct virtio_hw_internal virtio_hw_internal[RTE_MAX_VIRTIO_CRYPTO]; + +/* + * How many bits to shift physical queue address written to QUEUE_PFN. + * 12 is historical, and due to x86 page size. + */ +#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 + +/* The alignment to use between consumer and producer parts of vring. */ +#define VIRTIO_PCI_VRING_ALIGN 4096 + +enum virtio_msix_status { + VIRTIO_MSIX_NONE = 0, + VIRTIO_MSIX_DISABLED = 1, + VIRTIO_MSIX_ENABLED = 2 +}; + +static inline int +vtpci_with_feature(struct virtio_crypto_hw *hw, uint64_t bit) +{ + return (hw->guest_features & (1ULL << bit)) != 0; +} + +/* + * Function declaration from virtio_pci.c + */ +int vtpci_cryptodev_init(struct rte_pci_device *dev, + struct virtio_crypto_hw *hw); +void vtpci_cryptodev_reset(struct virtio_crypto_hw *hw); + +void vtpci_cryptodev_reinit_complete(struct virtio_crypto_hw *hw); + +uint8_t vtpci_cryptodev_get_status(struct virtio_crypto_hw *hw); +void vtpci_cryptodev_set_status(struct virtio_crypto_hw *hw, uint8_t status); + +uint64_t vtpci_cryptodev_negotiate_features(struct virtio_crypto_hw *hw, + uint64_t host_features); + +void vtpci_write_cryptodev_config(struct virtio_crypto_hw *hw, size_t offset, + const void *src, int length); + +void vtpci_read_cryptodev_config(struct virtio_crypto_hw *hw, size_t offset, + void *dst, int length); + +uint8_t vtpci_cryptodev_isr(struct virtio_crypto_hw *hw); + +#endif /* _VIRTIO_PCI_H_ */ diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_ring.h b/src/spdk/dpdk/drivers/crypto/virtio/virtio_ring.h new file mode 100644 index 00000000..ee306745 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_ring.h @@ -0,0 +1,137 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTIO_RING_H_ +#define _VIRTIO_RING_H_ + +#include + +#include + +/* This marks a buffer as continuing via the next field. */ +#define VRING_DESC_F_NEXT 1 +/* This marks a buffer as write-only (otherwise read-only). */ +#define VRING_DESC_F_WRITE 2 +/* This means the buffer contains a list of buffer descriptors. */ +#define VRING_DESC_F_INDIRECT 4 + +/* The Host uses this in used->flags to advise the Guest: don't kick me + * when you add a buffer. It's unreliable, so it's simply an + * optimization. Guest will still kick if it's out of buffers. + */ +#define VRING_USED_F_NO_NOTIFY 1 +/* The Guest uses this in avail->flags to advise the Host: don't + * interrupt me when you consume a buffer. It's unreliable, so it's + * simply an optimization. + */ +#define VRING_AVAIL_F_NO_INTERRUPT 1 + +/* VirtIO ring descriptors: 16 bytes. + * These can chain together via "next". + */ +struct vring_desc { + uint64_t addr; /* Address (guest-physical). */ + uint32_t len; /* Length. */ + uint16_t flags; /* The flags as indicated above. */ + uint16_t next; /* We chain unused descriptors via this. */ +}; + +struct vring_avail { + uint16_t flags; + uint16_t idx; + uint16_t ring[0]; +}; + +/* id is a 16bit index. uint32_t is used here for ids for padding reasons. */ +struct vring_used_elem { + /* Index of start of used descriptor chain. */ + uint32_t id; + /* Total length of the descriptor chain which was written to. */ + uint32_t len; +}; + +struct vring_used { + uint16_t flags; + volatile uint16_t idx; + struct vring_used_elem ring[0]; +}; + +struct vring { + unsigned int num; + struct vring_desc *desc; + struct vring_avail *avail; + struct vring_used *used; +}; + +/* The standard layout for the ring is a continuous chunk of memory which + * looks like this. We assume num is a power of 2. + * + * struct vring { + * // The actual descriptors (16 bytes each) + * struct vring_desc desc[num]; + * + * // A ring of available descriptor heads with free-running index. + * __u16 avail_flags; + * __u16 avail_idx; + * __u16 available[num]; + * __u16 used_event_idx; + * + * // Padding to the next align boundary. + * char pad[]; + * + * // A ring of used descriptor heads with free-running index. + * __u16 used_flags; + * __u16 used_idx; + * struct vring_used_elem used[num]; + * __u16 avail_event_idx; + * }; + * + * NOTE: for VirtIO PCI, align is 4096. + */ + +/* + * We publish the used event index at the end of the available ring, and vice + * versa. They are at the end for backwards compatibility. + */ +#define vring_used_event(vr) ((vr)->avail->ring[(vr)->num]) +#define vring_avail_event(vr) (*(uint16_t *)&(vr)->used->ring[(vr)->num]) + +static inline size_t +vring_size(unsigned int num, unsigned long align) +{ + size_t size; + + size = num * sizeof(struct vring_desc); + size += sizeof(struct vring_avail) + (num * sizeof(uint16_t)); + size = RTE_ALIGN_CEIL(size, align); + size += sizeof(struct vring_used) + + (num * sizeof(struct vring_used_elem)); + return size; +} + +static inline void +vring_init(struct vring *vr, unsigned int num, uint8_t *p, + unsigned long align) +{ + vr->num = num; + vr->desc = (struct vring_desc *) p; + vr->avail = (struct vring_avail *) (p + + num * sizeof(struct vring_desc)); + vr->used = (void *) + RTE_ALIGN_CEIL((uintptr_t)(&vr->avail->ring[num]), align); +} + +/* + * The following is used with VIRTIO_RING_F_EVENT_IDX. + * Assuming a given event_idx value from the other size, if we have + * just incremented index from old to new_idx, should we trigger an + * event? + */ +static inline int +vring_need_event(uint16_t event_idx, uint16_t new_idx, uint16_t old) +{ + return (uint16_t)(new_idx - event_idx - 1) < (uint16_t)(new_idx - old); +} + +#endif /* _VIRTIO_RING_H_ */ diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtio_rxtx.c b/src/spdk/dpdk/drivers/crypto/virtio/virtio_rxtx.c new file mode 100644 index 00000000..e32a1ecd --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtio_rxtx.c @@ -0,0 +1,527 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ +#include + +#include "virtqueue.h" +#include "virtio_cryptodev.h" +#include "virtio_crypto_algs.h" + +static void +vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx) +{ + struct vring_desc *dp, *dp_tail; + struct vq_desc_extra *dxp; + uint16_t desc_idx_last = desc_idx; + + dp = &vq->vq_ring.desc[desc_idx]; + dxp = &vq->vq_descx[desc_idx]; + vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt + dxp->ndescs); + if ((dp->flags & VRING_DESC_F_INDIRECT) == 0) { + while (dp->flags & VRING_DESC_F_NEXT) { + desc_idx_last = dp->next; + dp = &vq->vq_ring.desc[dp->next]; + } + } + dxp->ndescs = 0; + + /* + * We must append the existing free chain, if any, to the end of + * newly freed chain. If the virtqueue was completely used, then + * head would be VQ_RING_DESC_CHAIN_END (ASSERTed above). + */ + if (vq->vq_desc_tail_idx == VQ_RING_DESC_CHAIN_END) { + vq->vq_desc_head_idx = desc_idx; + } else { + dp_tail = &vq->vq_ring.desc[vq->vq_desc_tail_idx]; + dp_tail->next = desc_idx; + } + + vq->vq_desc_tail_idx = desc_idx_last; + dp->next = VQ_RING_DESC_CHAIN_END; +} + +static uint16_t +virtqueue_dequeue_burst_rx(struct virtqueue *vq, + struct rte_crypto_op **rx_pkts, uint16_t num) +{ + struct vring_used_elem *uep; + struct rte_crypto_op *cop; + uint16_t used_idx, desc_idx; + uint16_t i; + struct virtio_crypto_inhdr *inhdr; + struct virtio_crypto_op_cookie *op_cookie; + + /* Caller does the check */ + for (i = 0; i < num ; i++) { + used_idx = (uint16_t)(vq->vq_used_cons_idx + & (vq->vq_nentries - 1)); + uep = &vq->vq_ring.used->ring[used_idx]; + desc_idx = (uint16_t)uep->id; + cop = (struct rte_crypto_op *) + vq->vq_descx[desc_idx].crypto_op; + if (unlikely(cop == NULL)) { + VIRTIO_CRYPTO_RX_LOG_DBG("vring descriptor with no " + "mbuf cookie at %u", + vq->vq_used_cons_idx); + break; + } + + op_cookie = (struct virtio_crypto_op_cookie *) + vq->vq_descx[desc_idx].cookie; + inhdr = &(op_cookie->inhdr); + switch (inhdr->status) { + case VIRTIO_CRYPTO_OK: + cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS; + break; + case VIRTIO_CRYPTO_ERR: + cop->status = RTE_CRYPTO_OP_STATUS_ERROR; + vq->packets_received_failed++; + break; + case VIRTIO_CRYPTO_BADMSG: + cop->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + vq->packets_received_failed++; + break; + case VIRTIO_CRYPTO_NOTSUPP: + cop->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + vq->packets_received_failed++; + break; + case VIRTIO_CRYPTO_INVSESS: + cop->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION; + vq->packets_received_failed++; + break; + default: + break; + } + + vq->packets_received_total++; + + rx_pkts[i] = cop; + rte_mempool_put(vq->mpool, op_cookie); + + vq->vq_used_cons_idx++; + vq_ring_free_chain(vq, desc_idx); + vq->vq_descx[desc_idx].crypto_op = NULL; + } + + return i; +} + +static int +virtqueue_crypto_sym_pkt_header_arrange( + struct rte_crypto_op *cop, + struct virtio_crypto_op_data_req *data, + struct virtio_crypto_session *session) +{ + struct rte_crypto_sym_op *sym_op = cop->sym; + struct virtio_crypto_op_data_req *req_data = data; + struct virtio_crypto_op_ctrl_req *ctrl = &session->ctrl; + struct virtio_crypto_sym_create_session_req *sym_sess_req = + &ctrl->u.sym_create_session; + struct virtio_crypto_alg_chain_session_para *chain_para = + &sym_sess_req->u.chain.para; + struct virtio_crypto_cipher_session_para *cipher_para; + + req_data->header.session_id = session->session_id; + + switch (sym_sess_req->op_type) { + case VIRTIO_CRYPTO_SYM_OP_CIPHER: + req_data->u.sym_req.op_type = VIRTIO_CRYPTO_SYM_OP_CIPHER; + + cipher_para = &sym_sess_req->u.cipher.para; + if (cipher_para->op == VIRTIO_CRYPTO_OP_ENCRYPT) + req_data->header.opcode = VIRTIO_CRYPTO_CIPHER_ENCRYPT; + else + req_data->header.opcode = VIRTIO_CRYPTO_CIPHER_DECRYPT; + + req_data->u.sym_req.u.cipher.para.iv_len + = session->iv.length; + + req_data->u.sym_req.u.cipher.para.src_data_len = + (sym_op->cipher.data.length + + sym_op->cipher.data.offset); + req_data->u.sym_req.u.cipher.para.dst_data_len = + req_data->u.sym_req.u.cipher.para.src_data_len; + break; + case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING: + req_data->u.sym_req.op_type = + VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING; + + cipher_para = &chain_para->cipher_param; + if (cipher_para->op == VIRTIO_CRYPTO_OP_ENCRYPT) + req_data->header.opcode = VIRTIO_CRYPTO_CIPHER_ENCRYPT; + else + req_data->header.opcode = VIRTIO_CRYPTO_CIPHER_DECRYPT; + + req_data->u.sym_req.u.chain.para.iv_len = session->iv.length; + req_data->u.sym_req.u.chain.para.aad_len = session->aad.length; + + req_data->u.sym_req.u.chain.para.src_data_len = + (sym_op->cipher.data.length + + sym_op->cipher.data.offset); + req_data->u.sym_req.u.chain.para.dst_data_len = + req_data->u.sym_req.u.chain.para.src_data_len; + req_data->u.sym_req.u.chain.para.cipher_start_src_offset = + sym_op->cipher.data.offset; + req_data->u.sym_req.u.chain.para.len_to_cipher = + sym_op->cipher.data.length; + req_data->u.sym_req.u.chain.para.hash_start_src_offset = + sym_op->auth.data.offset; + req_data->u.sym_req.u.chain.para.len_to_hash = + sym_op->auth.data.length; + req_data->u.sym_req.u.chain.para.aad_len = + chain_para->aad_len; + + if (chain_para->hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN) + req_data->u.sym_req.u.chain.para.hash_result_len = + chain_para->u.hash_param.hash_result_len; + if (chain_para->hash_mode == + VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH) + req_data->u.sym_req.u.chain.para.hash_result_len = + chain_para->u.mac_param.hash_result_len; + break; + default: + return -1; + } + + return 0; +} + +static int +virtqueue_crypto_sym_enqueue_xmit( + struct virtqueue *txvq, + struct rte_crypto_op *cop) +{ + uint16_t idx = 0; + uint16_t num_entry; + uint16_t needed = 1; + uint16_t head_idx; + struct vq_desc_extra *dxp; + struct vring_desc *start_dp; + struct vring_desc *desc; + uint64_t indirect_op_data_req_phys_addr; + uint16_t req_data_len = sizeof(struct virtio_crypto_op_data_req); + uint32_t indirect_vring_addr_offset = req_data_len + + sizeof(struct virtio_crypto_inhdr); + uint32_t indirect_iv_addr_offset = indirect_vring_addr_offset + + sizeof(struct vring_desc) * NUM_ENTRY_VIRTIO_CRYPTO_OP; + struct rte_crypto_sym_op *sym_op = cop->sym; + struct virtio_crypto_session *session = + (struct virtio_crypto_session *)get_sym_session_private_data( + cop->sym->session, cryptodev_virtio_driver_id); + struct virtio_crypto_op_data_req *op_data_req; + uint32_t hash_result_len = 0; + struct virtio_crypto_op_cookie *crypto_op_cookie; + struct virtio_crypto_alg_chain_session_para *para; + + if (unlikely(sym_op->m_src->nb_segs != 1)) + return -EMSGSIZE; + if (unlikely(txvq->vq_free_cnt == 0)) + return -ENOSPC; + if (unlikely(txvq->vq_free_cnt < needed)) + return -EMSGSIZE; + head_idx = txvq->vq_desc_head_idx; + if (unlikely(head_idx >= txvq->vq_nentries)) + return -EFAULT; + if (unlikely(session == NULL)) + return -EFAULT; + + dxp = &txvq->vq_descx[head_idx]; + + if (rte_mempool_get(txvq->mpool, &dxp->cookie)) { + VIRTIO_CRYPTO_TX_LOG_ERR("can not get cookie"); + return -EFAULT; + } + crypto_op_cookie = dxp->cookie; + indirect_op_data_req_phys_addr = + rte_mempool_virt2iova(crypto_op_cookie); + op_data_req = (struct virtio_crypto_op_data_req *)crypto_op_cookie; + + if (virtqueue_crypto_sym_pkt_header_arrange(cop, op_data_req, session)) + return -EFAULT; + + /* status is initialized to VIRTIO_CRYPTO_ERR */ + ((struct virtio_crypto_inhdr *) + ((uint8_t *)op_data_req + req_data_len))->status = + VIRTIO_CRYPTO_ERR; + + /* point to indirect vring entry */ + desc = (struct vring_desc *) + ((uint8_t *)op_data_req + indirect_vring_addr_offset); + for (idx = 0; idx < (NUM_ENTRY_VIRTIO_CRYPTO_OP - 1); idx++) + desc[idx].next = idx + 1; + desc[NUM_ENTRY_VIRTIO_CRYPTO_OP - 1].next = VQ_RING_DESC_CHAIN_END; + + idx = 0; + + /* indirect vring: first part, virtio_crypto_op_data_req */ + desc[idx].addr = indirect_op_data_req_phys_addr; + desc[idx].len = req_data_len; + desc[idx++].flags = VRING_DESC_F_NEXT; + + /* indirect vring: iv of cipher */ + if (session->iv.length) { + if (cop->phys_addr) + desc[idx].addr = cop->phys_addr + session->iv.offset; + else { + rte_memcpy(crypto_op_cookie->iv, + rte_crypto_op_ctod_offset(cop, + uint8_t *, session->iv.offset), + session->iv.length); + desc[idx].addr = indirect_op_data_req_phys_addr + + indirect_iv_addr_offset; + } + + desc[idx].len = session->iv.length; + desc[idx++].flags = VRING_DESC_F_NEXT; + } + + /* indirect vring: additional auth data */ + if (session->aad.length) { + desc[idx].addr = session->aad.phys_addr; + desc[idx].len = session->aad.length; + desc[idx++].flags = VRING_DESC_F_NEXT; + } + + /* indirect vring: src data */ + desc[idx].addr = rte_pktmbuf_mtophys_offset(sym_op->m_src, 0); + desc[idx].len = (sym_op->cipher.data.offset + + sym_op->cipher.data.length); + desc[idx++].flags = VRING_DESC_F_NEXT; + + /* indirect vring: dst data */ + if (sym_op->m_dst) { + desc[idx].addr = rte_pktmbuf_mtophys_offset(sym_op->m_dst, 0); + desc[idx].len = (sym_op->cipher.data.offset + + sym_op->cipher.data.length); + } else { + desc[idx].addr = rte_pktmbuf_mtophys_offset(sym_op->m_src, 0); + desc[idx].len = (sym_op->cipher.data.offset + + sym_op->cipher.data.length); + } + desc[idx++].flags = VRING_DESC_F_WRITE | VRING_DESC_F_NEXT; + + /* indirect vring: digest result */ + para = &(session->ctrl.u.sym_create_session.u.chain.para); + if (para->hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN) + hash_result_len = para->u.hash_param.hash_result_len; + if (para->hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH) + hash_result_len = para->u.mac_param.hash_result_len; + if (hash_result_len > 0) { + desc[idx].addr = sym_op->auth.digest.phys_addr; + desc[idx].len = hash_result_len; + desc[idx++].flags = VRING_DESC_F_WRITE | VRING_DESC_F_NEXT; + } + + /* indirect vring: last part, status returned */ + desc[idx].addr = indirect_op_data_req_phys_addr + req_data_len; + desc[idx].len = sizeof(struct virtio_crypto_inhdr); + desc[idx++].flags = VRING_DESC_F_WRITE; + + num_entry = idx; + + /* save the infos to use when receiving packets */ + dxp->crypto_op = (void *)cop; + dxp->ndescs = needed; + + /* use a single buffer */ + start_dp = txvq->vq_ring.desc; + start_dp[head_idx].addr = indirect_op_data_req_phys_addr + + indirect_vring_addr_offset; + start_dp[head_idx].len = num_entry * sizeof(struct vring_desc); + start_dp[head_idx].flags = VRING_DESC_F_INDIRECT; + + idx = start_dp[head_idx].next; + txvq->vq_desc_head_idx = idx; + if (txvq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END) + txvq->vq_desc_tail_idx = idx; + txvq->vq_free_cnt = (uint16_t)(txvq->vq_free_cnt - needed); + vq_update_avail_ring(txvq, head_idx); + + return 0; +} + +static int +virtqueue_crypto_enqueue_xmit(struct virtqueue *txvq, + struct rte_crypto_op *cop) +{ + int ret; + + switch (cop->type) { + case RTE_CRYPTO_OP_TYPE_SYMMETRIC: + ret = virtqueue_crypto_sym_enqueue_xmit(txvq, cop); + break; + default: + VIRTIO_CRYPTO_TX_LOG_ERR("invalid crypto op type %u", + cop->type); + ret = -EFAULT; + break; + } + + return ret; +} + +static int +virtio_crypto_vring_start(struct virtqueue *vq) +{ + struct virtio_crypto_hw *hw = vq->hw; + int i, size = vq->vq_nentries; + struct vring *vr = &vq->vq_ring; + uint8_t *ring_mem = vq->vq_ring_virt_mem; + + PMD_INIT_FUNC_TRACE(); + + vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN); + vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); + vq->vq_free_cnt = vq->vq_nentries; + + /* Chain all the descriptors in the ring with an END */ + for (i = 0; i < size - 1; i++) + vr->desc[i].next = (uint16_t)(i + 1); + vr->desc[i].next = VQ_RING_DESC_CHAIN_END; + + /* + * Disable device(host) interrupting guest + */ + virtqueue_disable_intr(vq); + + /* + * Set guest physical address of the virtqueue + * in VIRTIO_PCI_QUEUE_PFN config register of device + * to share with the backend + */ + if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) { + VIRTIO_CRYPTO_INIT_LOG_ERR("setup_queue failed"); + return -EINVAL; + } + + return 0; +} + +void +virtio_crypto_ctrlq_start(struct rte_cryptodev *dev) +{ + struct virtio_crypto_hw *hw = dev->data->dev_private; + + if (hw->cvq) { + virtio_crypto_vring_start(hw->cvq); + VIRTQUEUE_DUMP((struct virtqueue *)hw->cvq); + } +} + +void +virtio_crypto_dataq_start(struct rte_cryptodev *dev) +{ + /* + * Start data vrings + * - Setup vring structure for data queues + */ + uint16_t i; + struct virtio_crypto_hw *hw = dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + /* Start data vring. */ + for (i = 0; i < hw->max_dataqueues; i++) { + virtio_crypto_vring_start(dev->data->queue_pairs[i]); + VIRTQUEUE_DUMP((struct virtqueue *)dev->data->queue_pairs[i]); + } +} + +/* vring size of data queue is 1024 */ +#define VIRTIO_MBUF_BURST_SZ 1024 + +uint16_t +virtio_crypto_pkt_rx_burst(void *tx_queue, struct rte_crypto_op **rx_pkts, + uint16_t nb_pkts) +{ + struct virtqueue *txvq = tx_queue; + uint16_t nb_used, num, nb_rx; + + nb_used = VIRTQUEUE_NUSED(txvq); + + virtio_rmb(); + + num = (uint16_t)(likely(nb_used <= nb_pkts) ? nb_used : nb_pkts); + num = (uint16_t)(likely(num <= VIRTIO_MBUF_BURST_SZ) + ? num : VIRTIO_MBUF_BURST_SZ); + + if (num == 0) + return 0; + + nb_rx = virtqueue_dequeue_burst_rx(txvq, rx_pkts, num); + VIRTIO_CRYPTO_RX_LOG_DBG("used:%d dequeue:%d", nb_used, num); + + return nb_rx; +} + +uint16_t +virtio_crypto_pkt_tx_burst(void *tx_queue, struct rte_crypto_op **tx_pkts, + uint16_t nb_pkts) +{ + struct virtqueue *txvq; + uint16_t nb_tx; + int error; + + if (unlikely(nb_pkts < 1)) + return nb_pkts; + if (unlikely(tx_queue == NULL)) { + VIRTIO_CRYPTO_TX_LOG_ERR("tx_queue is NULL"); + return 0; + } + txvq = tx_queue; + + VIRTIO_CRYPTO_TX_LOG_DBG("%d packets to xmit", nb_pkts); + + for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) { + struct rte_mbuf *txm = tx_pkts[nb_tx]->sym->m_src; + /* nb_segs is always 1 at virtio crypto situation */ + int need = txm->nb_segs - txvq->vq_free_cnt; + + /* + * Positive value indicates it hasn't enough space in vring + * descriptors + */ + if (unlikely(need > 0)) { + /* + * try it again because the receive process may be + * free some space + */ + need = txm->nb_segs - txvq->vq_free_cnt; + if (unlikely(need > 0)) { + VIRTIO_CRYPTO_TX_LOG_DBG("No free tx " + "descriptors to transmit"); + break; + } + } + + txvq->packets_sent_total++; + + /* Enqueue Packet buffers */ + error = virtqueue_crypto_enqueue_xmit(txvq, tx_pkts[nb_tx]); + if (unlikely(error)) { + if (error == ENOSPC) + VIRTIO_CRYPTO_TX_LOG_ERR( + "virtqueue_enqueue Free count = 0"); + else if (error == EMSGSIZE) + VIRTIO_CRYPTO_TX_LOG_ERR( + "virtqueue_enqueue Free count < 1"); + else + VIRTIO_CRYPTO_TX_LOG_ERR( + "virtqueue_enqueue error: %d", error); + txvq->packets_sent_failed++; + break; + } + } + + if (likely(nb_tx)) { + vq_update_avail_idx(txvq); + + if (unlikely(virtqueue_kick_prepare(txvq))) { + virtqueue_notify(txvq); + VIRTIO_CRYPTO_TX_LOG_DBG("Notified backend after xmit"); + } + } + + return nb_tx; +} diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtqueue.c b/src/spdk/dpdk/drivers/crypto/virtio/virtqueue.c new file mode 100644 index 00000000..fd8be581 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtqueue.c @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#include + +#include +#include +#include + +#include "virtqueue.h" + +void +virtqueue_disable_intr(struct virtqueue *vq) +{ + /* + * Set VRING_AVAIL_F_NO_INTERRUPT to hint host + * not to interrupt when it consumes packets + * Note: this is only considered a hint to the host + */ + vq->vq_ring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT; +} + +void +virtqueue_detatch_unused(struct virtqueue *vq) +{ + struct rte_crypto_op *cop = NULL; + + int idx; + + if (vq != NULL) + for (idx = 0; idx < vq->vq_nentries; idx++) { + cop = vq->vq_descx[idx].crypto_op; + if (cop) { + if (cop->sym->m_src) + rte_pktmbuf_free(cop->sym->m_src); + if (cop->sym->m_dst) + rte_pktmbuf_free(cop->sym->m_dst); + rte_crypto_op_free(cop); + vq->vq_descx[idx].crypto_op = NULL; + } + } +} diff --git a/src/spdk/dpdk/drivers/crypto/virtio/virtqueue.h b/src/spdk/dpdk/drivers/crypto/virtio/virtqueue.h new file mode 100644 index 00000000..bf10c657 --- /dev/null +++ b/src/spdk/dpdk/drivers/crypto/virtio/virtqueue.h @@ -0,0 +1,171 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD. + */ + +#ifndef _VIRTQUEUE_H_ +#define _VIRTQUEUE_H_ + +#include + +#include +#include +#include +#include + +#include "virtio_pci.h" +#include "virtio_ring.h" +#include "virtio_logs.h" +#include "virtio_crypto.h" + +struct rte_mbuf; + +/* + * Per virtio_config.h in Linux. + * For virtio_pci on SMP, we don't need to order with respect to MMIO + * accesses through relaxed memory I/O windows, so smp_mb() et al are + * sufficient. + * + */ +#define virtio_mb() rte_smp_mb() +#define virtio_rmb() rte_smp_rmb() +#define virtio_wmb() rte_smp_wmb() + +#define VIRTQUEUE_MAX_NAME_SZ 32 + +enum { VTCRYPTO_DATAQ = 0, VTCRYPTO_CTRLQ = 1 }; + +/** + * The maximum virtqueue size is 2^15. Use that value as the end of + * descriptor chain terminator since it will never be a valid index + * in the descriptor table. This is used to verify we are correctly + * handling vq_free_cnt. + */ +#define VQ_RING_DESC_CHAIN_END 32768 + +struct vq_desc_extra { + void *crypto_op; + void *cookie; + uint16_t ndescs; +}; + +struct virtqueue { + /**< virtio_crypto_hw structure pointer. */ + struct virtio_crypto_hw *hw; + /**< mem zone to populate RX ring. */ + const struct rte_memzone *mz; + /**< memzone to populate hdr and request. */ + struct rte_mempool *mpool; + uint8_t dev_id; /**< Device identifier. */ + uint16_t vq_queue_index; /**< PCI queue index */ + + void *vq_ring_virt_mem; /**< linear address of vring*/ + unsigned int vq_ring_size; + phys_addr_t vq_ring_mem; /**< physical address of vring */ + + struct vring vq_ring; /**< vring keeping desc, used and avail */ + uint16_t vq_free_cnt; /**< num of desc available */ + uint16_t vq_nentries; /**< vring desc numbers */ + + /** + * Head of the free chain in the descriptor table. If + * there are no free descriptors, this will be set to + * VQ_RING_DESC_CHAIN_END. + */ + uint16_t vq_desc_head_idx; + uint16_t vq_desc_tail_idx; + /** + * Last consumed descriptor in the used table, + * trails vq_ring.used->idx. + */ + uint16_t vq_used_cons_idx; + uint16_t vq_avail_idx; + + /* Statistics */ + uint64_t packets_sent_total; + uint64_t packets_sent_failed; + uint64_t packets_received_total; + uint64_t packets_received_failed; + + uint16_t *notify_addr; + + struct vq_desc_extra vq_descx[0]; +}; + +/** + * Tell the backend not to interrupt us. + */ +void virtqueue_disable_intr(struct virtqueue *vq); + +/** + * Get all mbufs to be freed. + */ +void virtqueue_detatch_unused(struct virtqueue *vq); + +static inline int +virtqueue_full(const struct virtqueue *vq) +{ + return vq->vq_free_cnt == 0; +} + +#define VIRTQUEUE_NUSED(vq) \ + ((uint16_t)((vq)->vq_ring.used->idx - (vq)->vq_used_cons_idx)) + +static inline void +vq_update_avail_idx(struct virtqueue *vq) +{ + virtio_wmb(); + vq->vq_ring.avail->idx = vq->vq_avail_idx; +} + +static inline void +vq_update_avail_ring(struct virtqueue *vq, uint16_t desc_idx) +{ + uint16_t avail_idx; + /* + * Place the head of the descriptor chain into the next slot and make + * it usable to the host. The chain is made available now rather than + * deferring to virtqueue_notify() in the hopes that if the host is + * currently running on another CPU, we can keep it processing the new + * descriptor. + */ + avail_idx = (uint16_t)(vq->vq_avail_idx & (vq->vq_nentries - 1)); + if (unlikely(vq->vq_ring.avail->ring[avail_idx] != desc_idx)) + vq->vq_ring.avail->ring[avail_idx] = desc_idx; + vq->vq_avail_idx++; +} + +static inline int +virtqueue_kick_prepare(struct virtqueue *vq) +{ + return !(vq->vq_ring.used->flags & VRING_USED_F_NO_NOTIFY); +} + +static inline void +virtqueue_notify(struct virtqueue *vq) +{ + /* + * Ensure updated avail->idx is visible to host. + * For virtio on IA, the notificaiton is through io port operation + * which is a serialization instruction itself. + */ + VTPCI_OPS(vq->hw)->notify_queue(vq->hw, vq); +} + +/** + * Dump virtqueue internal structures, for debug purpose only. + */ +#define VIRTQUEUE_DUMP(vq) do { \ + uint16_t used_idx, nused; \ + used_idx = (vq)->vq_ring.used->idx; \ + nused = (uint16_t)(used_idx - (vq)->vq_used_cons_idx); \ + VIRTIO_CRYPTO_INIT_LOG_DBG(\ + "VQ: - size=%d; free=%d; used=%d; desc_head_idx=%d;" \ + " avail.idx=%d; used_cons_idx=%d; used.idx=%d;" \ + " avail.flags=0x%x; used.flags=0x%x", \ + (vq)->vq_nentries, (vq)->vq_free_cnt, nused, \ + (vq)->vq_desc_head_idx, (vq)->vq_ring.avail->idx, \ + (vq)->vq_used_cons_idx, (vq)->vq_ring.used->idx, \ + (vq)->vq_ring.avail->flags, (vq)->vq_ring.used->flags); \ +} while (0) + +#endif /* _VIRTQUEUE_H_ */ -- cgit v1.2.3