--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017-2018 Intel Corporation
+ */
+#include <rte_malloc.h>
+#include <rte_hash.h>
+#include <rte_jhash.h>
+#include <rte_mbuf.h>
+#include <rte_cryptodev.h>
+
+#include "rte_vhost_crypto.h"
+#include "vhost.h"
+#include "vhost_user.h"
+#include "virtio_crypto.h"
+
+#define INHDR_LEN (sizeof(struct virtio_crypto_inhdr))
+#define IV_OFFSET (sizeof(struct rte_crypto_op) + \
+ sizeof(struct rte_crypto_sym_op))
+
+#ifdef RTE_LIBRTE_VHOST_DEBUG
+#define VC_LOG_ERR(fmt, args...) \
+ RTE_LOG(ERR, USER1, "[%s] %s() line %u: " fmt "\n", \
+ "Vhost-Crypto", __func__, __LINE__, ## args)
+#define VC_LOG_INFO(fmt, args...) \
+ RTE_LOG(INFO, USER1, "[%s] %s() line %u: " fmt "\n", \
+ "Vhost-Crypto", __func__, __LINE__, ## args)
+
+#define VC_LOG_DBG(fmt, args...) \
+ RTE_LOG(DEBUG, USER1, "[%s] %s() line %u: " fmt "\n", \
+ "Vhost-Crypto", __func__, __LINE__, ## args)
+#else
+#define VC_LOG_ERR(fmt, args...) \
+ RTE_LOG(ERR, USER1, "[VHOST-Crypto]: " fmt "\n", ## args)
+#define VC_LOG_INFO(fmt, args...) \
+ RTE_LOG(INFO, USER1, "[VHOST-Crypto]: " fmt "\n", ## args)
+#define VC_LOG_DBG(fmt, args...)
+#endif
+
+#define VIRTIO_CRYPTO_FEATURES ((1 << VIRTIO_F_NOTIFY_ON_EMPTY) | \
+ (1 << VIRTIO_RING_F_INDIRECT_DESC) | \
+ (1 << VIRTIO_RING_F_EVENT_IDX) | \
+ (1 << VIRTIO_CRYPTO_SERVICE_CIPHER) | \
+ (1 << VIRTIO_CRYPTO_SERVICE_MAC) | \
+ (1 << VIRTIO_NET_F_CTRL_VQ))
+
+#define IOVA_TO_VVA(t, r, a, l, p) \
+ ((t)(uintptr_t)vhost_iova_to_vva(r->dev, r->vq, a, l, p))
+
+static int
+cipher_algo_transform(uint32_t virtio_cipher_algo)
+{
+ int ret;
+
+ switch (virtio_cipher_algo) {
+ case VIRTIO_CRYPTO_CIPHER_AES_CBC:
+ ret = RTE_CRYPTO_CIPHER_AES_CBC;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_AES_CTR:
+ ret = RTE_CRYPTO_CIPHER_AES_CTR;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_DES_ECB:
+ ret = -VIRTIO_CRYPTO_NOTSUPP;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_DES_CBC:
+ ret = RTE_CRYPTO_CIPHER_DES_CBC;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_3DES_ECB:
+ ret = RTE_CRYPTO_CIPHER_3DES_ECB;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_3DES_CBC:
+ ret = RTE_CRYPTO_CIPHER_3DES_CBC;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_3DES_CTR:
+ ret = RTE_CRYPTO_CIPHER_3DES_CTR;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_KASUMI_F8:
+ ret = RTE_CRYPTO_CIPHER_KASUMI_F8;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_SNOW3G_UEA2:
+ ret = RTE_CRYPTO_CIPHER_SNOW3G_UEA2;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_AES_F8:
+ ret = RTE_CRYPTO_CIPHER_AES_F8;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_AES_XTS:
+ ret = RTE_CRYPTO_CIPHER_AES_XTS;
+ break;
+ case VIRTIO_CRYPTO_CIPHER_ZUC_EEA3:
+ ret = RTE_CRYPTO_CIPHER_ZUC_EEA3;
+ break;
+ default:
+ ret = -VIRTIO_CRYPTO_BADMSG;
+ break;
+ }
+
+ return ret;
+}
+
+static int
+auth_algo_transform(uint32_t virtio_auth_algo)
+{
+ int ret;
+
+ switch (virtio_auth_algo) {
+
+ case VIRTIO_CRYPTO_NO_MAC:
+ ret = RTE_CRYPTO_AUTH_NULL;
+ break;
+ case VIRTIO_CRYPTO_MAC_HMAC_MD5:
+ ret = RTE_CRYPTO_AUTH_MD5_HMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_HMAC_SHA1:
+ ret = RTE_CRYPTO_AUTH_SHA1_HMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_HMAC_SHA_224:
+ ret = RTE_CRYPTO_AUTH_SHA224_HMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_HMAC_SHA_256:
+ ret = RTE_CRYPTO_AUTH_SHA256_HMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_HMAC_SHA_384:
+ ret = RTE_CRYPTO_AUTH_SHA384_HMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_HMAC_SHA_512:
+ ret = RTE_CRYPTO_AUTH_SHA512_HMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_CMAC_3DES:
+ ret = -VIRTIO_CRYPTO_NOTSUPP;
+ break;
+ case VIRTIO_CRYPTO_MAC_CMAC_AES:
+ ret = RTE_CRYPTO_AUTH_AES_CMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_KASUMI_F9:
+ ret = RTE_CRYPTO_AUTH_KASUMI_F9;
+ break;
+ case VIRTIO_CRYPTO_MAC_SNOW3G_UIA2:
+ ret = RTE_CRYPTO_AUTH_SNOW3G_UIA2;
+ break;
+ case VIRTIO_CRYPTO_MAC_GMAC_AES:
+ ret = RTE_CRYPTO_AUTH_AES_GMAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_GMAC_TWOFISH:
+ ret = -VIRTIO_CRYPTO_NOTSUPP;
+ break;
+ case VIRTIO_CRYPTO_MAC_CBCMAC_AES:
+ ret = RTE_CRYPTO_AUTH_AES_CBC_MAC;
+ break;
+ case VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9:
+ ret = -VIRTIO_CRYPTO_NOTSUPP;
+ break;
+ case VIRTIO_CRYPTO_MAC_XCBC_AES:
+ ret = RTE_CRYPTO_AUTH_AES_XCBC_MAC;
+ break;
+ default:
+ ret = -VIRTIO_CRYPTO_BADMSG;
+ break;
+ }
+
+ return ret;
+}
+
+static int get_iv_len(enum rte_crypto_cipher_algorithm algo)
+{
+ int len;
+
+ switch (algo) {
+ case RTE_CRYPTO_CIPHER_3DES_CBC:
+ len = 8;
+ break;
+ case RTE_CRYPTO_CIPHER_3DES_CTR:
+ len = 8;
+ break;
+ case RTE_CRYPTO_CIPHER_3DES_ECB:
+ len = 8;
+ break;
+ case RTE_CRYPTO_CIPHER_AES_CBC:
+ len = 16;
+ break;
+
+ /* TODO: add common algos */
+
+ default:
+ len = -1;
+ break;
+ }
+
+ return len;
+}
+
+/**
+ * vhost_crypto struct is used to maintain a number of virtio_cryptos and
+ * one DPDK crypto device that deals with all crypto workloads. It is declared
+ * here and defined in vhost_crypto.c
+ */
+struct vhost_crypto {
+ /** Used to lookup DPDK Cryptodev Session based on VIRTIO crypto
+ * session ID.
+ */
+ struct rte_hash *session_map;
+ struct rte_mempool *mbuf_pool;
+ struct rte_mempool *sess_pool;
+
+ /** DPDK cryptodev ID */
+ uint8_t cid;
+ uint16_t nb_qps;
+
+ uint64_t last_session_id;
+
+ uint64_t cache_session_id;
+ struct rte_cryptodev_sym_session *cache_session;
+ /** socket id for the device */
+ int socket_id;
+
+ struct virtio_net *dev;
+
+ uint8_t option;
+} __rte_cache_aligned;
+
+struct vhost_crypto_data_req {
+ struct vring_desc *head;
+ struct virtio_net *dev;
+ struct virtio_crypto_inhdr *inhdr;
+ struct vhost_virtqueue *vq;
+ struct vring_desc *wb_desc;
+ uint16_t wb_len;
+ uint16_t desc_idx;
+ uint16_t len;
+ uint16_t zero_copy;
+};
+
+static int
+transform_cipher_param(struct rte_crypto_sym_xform *xform,
+ VhostUserCryptoSessionParam *param)
+{
+ int ret;
+
+ ret = cipher_algo_transform(param->cipher_algo);
+ if (unlikely(ret < 0))
+ return ret;
+
+ xform->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+ xform->cipher.algo = (uint32_t)ret;
+ xform->cipher.key.length = param->cipher_key_len;
+ if (xform->cipher.key.length > 0)
+ xform->cipher.key.data = param->cipher_key_buf;
+ if (param->dir == VIRTIO_CRYPTO_OP_ENCRYPT)
+ xform->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
+ else if (param->dir == VIRTIO_CRYPTO_OP_DECRYPT)
+ xform->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
+ else {
+ VC_LOG_DBG("Bad operation type");
+ return -VIRTIO_CRYPTO_BADMSG;
+ }
+
+ ret = get_iv_len(xform->cipher.algo);
+ if (unlikely(ret < 0))
+ return ret;
+ xform->cipher.iv.length = (uint16_t)ret;
+ xform->cipher.iv.offset = IV_OFFSET;
+ return 0;
+}
+
+static int
+transform_chain_param(struct rte_crypto_sym_xform *xforms,
+ VhostUserCryptoSessionParam *param)
+{
+ struct rte_crypto_sym_xform *xform_cipher, *xform_auth;
+ int ret;
+
+ switch (param->chaining_dir) {
+ case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER:
+ xform_auth = xforms;
+ xform_cipher = xforms->next;
+ xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
+ xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_VERIFY;
+ break;
+ case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH:
+ xform_cipher = xforms;
+ xform_auth = xforms->next;
+ xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
+ xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_GENERATE;
+ break;
+ default:
+ return -VIRTIO_CRYPTO_BADMSG;
+ }
+
+ /* cipher */
+ ret = cipher_algo_transform(param->cipher_algo);
+ if (unlikely(ret < 0))
+ return ret;
+ xform_cipher->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+ xform_cipher->cipher.algo = (uint32_t)ret;
+ xform_cipher->cipher.key.length = param->cipher_key_len;
+ xform_cipher->cipher.key.data = param->cipher_key_buf;
+ ret = get_iv_len(xform_cipher->cipher.algo);
+ if (unlikely(ret < 0))
+ return ret;
+ xform_cipher->cipher.iv.length = (uint16_t)ret;
+ xform_cipher->cipher.iv.offset = IV_OFFSET;
+
+ /* auth */
+ xform_auth->type = RTE_CRYPTO_SYM_XFORM_AUTH;
+ ret = auth_algo_transform(param->hash_algo);
+ if (unlikely(ret < 0))
+ return ret;
+ xform_auth->auth.algo = (uint32_t)ret;
+ xform_auth->auth.digest_length = param->digest_len;
+ xform_auth->auth.key.length = param->auth_key_len;
+ xform_auth->auth.key.data = param->auth_key_buf;
+
+ return 0;
+}
+
+static void
+vhost_crypto_create_sess(struct vhost_crypto *vcrypto,
+ VhostUserCryptoSessionParam *sess_param)
+{
+ struct rte_crypto_sym_xform xform1 = {0}, xform2 = {0};
+ struct rte_cryptodev_sym_session *session;
+ int ret;
+
+ switch (sess_param->op_type) {
+ case VIRTIO_CRYPTO_SYM_OP_NONE:
+ case VIRTIO_CRYPTO_SYM_OP_CIPHER:
+ ret = transform_cipher_param(&xform1, sess_param);
+ if (unlikely(ret)) {
+ VC_LOG_ERR("Error transform session msg (%i)", ret);
+ sess_param->session_id = ret;
+ return;
+ }
+ break;
+ case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING:
+ if (unlikely(sess_param->hash_mode !=
+ VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH)) {
+ sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP;
+ VC_LOG_ERR("Error transform session message (%i)",
+ -VIRTIO_CRYPTO_NOTSUPP);
+ return;
+ }
+
+ xform1.next = &xform2;
+
+ ret = transform_chain_param(&xform1, sess_param);
+ if (unlikely(ret)) {
+ VC_LOG_ERR("Error transform session message (%i)", ret);
+ sess_param->session_id = ret;
+ return;
+ }
+
+ break;
+ default:
+ VC_LOG_ERR("Algorithm not yet supported");
+ sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP;
+ return;
+ }
+
+ session = rte_cryptodev_sym_session_create(vcrypto->sess_pool);
+ if (!session) {
+ VC_LOG_ERR("Failed to create session");
+ sess_param->session_id = -VIRTIO_CRYPTO_ERR;
+ return;
+ }
+
+ if (rte_cryptodev_sym_session_init(vcrypto->cid, session, &xform1,
+ vcrypto->sess_pool) < 0) {
+ VC_LOG_ERR("Failed to initialize session");
+ sess_param->session_id = -VIRTIO_CRYPTO_ERR;
+ return;
+ }
+
+ /* insert hash to map */
+ if (rte_hash_add_key_data(vcrypto->session_map,
+ &vcrypto->last_session_id, session) < 0) {
+ VC_LOG_ERR("Failed to insert session to hash table");
+
+ if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0)
+ VC_LOG_ERR("Failed to clear session");
+ else {
+ if (rte_cryptodev_sym_session_free(session) < 0)
+ VC_LOG_ERR("Failed to free session");
+ }
+ sess_param->session_id = -VIRTIO_CRYPTO_ERR;
+ return;
+ }
+
+ VC_LOG_INFO("Session %"PRIu64" created for vdev %i.",
+ vcrypto->last_session_id, vcrypto->dev->vid);
+
+ sess_param->session_id = vcrypto->last_session_id;
+ vcrypto->last_session_id++;
+}
+
+static int
+vhost_crypto_close_sess(struct vhost_crypto *vcrypto, uint64_t session_id)
+{
+ struct rte_cryptodev_sym_session *session;
+ uint64_t sess_id = session_id;
+ int ret;
+
+ ret = rte_hash_lookup_data(vcrypto->session_map, &sess_id,
+ (void **)&session);
+
+ if (unlikely(ret < 0)) {
+ VC_LOG_ERR("Failed to delete session %"PRIu64".", session_id);
+ return -VIRTIO_CRYPTO_INVSESS;
+ }
+
+ if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0) {
+ VC_LOG_DBG("Failed to clear session");
+ return -VIRTIO_CRYPTO_ERR;
+ }
+
+ if (rte_cryptodev_sym_session_free(session) < 0) {
+ VC_LOG_DBG("Failed to free session");
+ return -VIRTIO_CRYPTO_ERR;
+ }
+
+ if (rte_hash_del_key(vcrypto->session_map, &sess_id) < 0) {
+ VC_LOG_DBG("Failed to delete session from hash table.");
+ return -VIRTIO_CRYPTO_ERR;
+ }
+
+ VC_LOG_INFO("Session %"PRIu64" deleted for vdev %i.", sess_id,
+ vcrypto->dev->vid);
+
+ return 0;
+}
+
+static int
+vhost_crypto_msg_post_handler(int vid, void *msg, uint32_t *require_reply)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_crypto *vcrypto;
+ VhostUserMsg *vmsg = msg;
+ int ret = 0;
+
+ if (dev == NULL || require_reply == NULL) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ vcrypto = dev->extern_data;
+ if (vcrypto == NULL) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ *require_reply = 0;
+
+ if (vmsg->request.master == VHOST_USER_CRYPTO_CREATE_SESS) {
+ vhost_crypto_create_sess(vcrypto,
+ &vmsg->payload.crypto_session);
+ *require_reply = 1;
+ } else if (vmsg->request.master == VHOST_USER_CRYPTO_CLOSE_SESS)
+ ret = vhost_crypto_close_sess(vcrypto, vmsg->payload.u64);
+ else
+ ret = -EINVAL;
+
+ return ret;
+}
+
+static __rte_always_inline struct vring_desc *
+find_write_desc(struct vring_desc *head, struct vring_desc *desc)
+{
+ if (desc->flags & VRING_DESC_F_WRITE)
+ return desc;
+
+ while (desc->flags & VRING_DESC_F_NEXT) {
+ desc = &head[desc->next];
+ if (desc->flags & VRING_DESC_F_WRITE)
+ return desc;
+ }
+
+ return NULL;
+}
+
+static struct virtio_crypto_inhdr *
+reach_inhdr(struct vhost_crypto_data_req *vc_req, struct vring_desc *desc)
+{
+ uint64_t dlen;
+ struct virtio_crypto_inhdr *inhdr;
+
+ while (desc->flags & VRING_DESC_F_NEXT)
+ desc = &vc_req->head[desc->next];
+
+ dlen = desc->len;
+ inhdr = IOVA_TO_VVA(struct virtio_crypto_inhdr *, vc_req, desc->addr,
+ &dlen, VHOST_ACCESS_WO);
+ if (unlikely(!inhdr || dlen != desc->len))
+ return NULL;
+
+ return inhdr;
+}
+
+static __rte_always_inline int
+move_desc(struct vring_desc *head, struct vring_desc **cur_desc,
+ uint32_t size)
+{
+ struct vring_desc *desc = *cur_desc;
+ int left = size;
+
+ rte_prefetch0(&head[desc->next]);
+ left -= desc->len;
+
+ while ((desc->flags & VRING_DESC_F_NEXT) && left > 0) {
+ desc = &head[desc->next];
+ rte_prefetch0(&head[desc->next]);
+ left -= desc->len;
+ }
+
+ if (unlikely(left > 0)) {
+ VC_LOG_ERR("Incorrect virtio descriptor");
+ return -1;
+ }
+
+ *cur_desc = &head[desc->next];
+ return 0;
+}
+
+static int
+copy_data(void *dst_data, struct vhost_crypto_data_req *vc_req,
+ struct vring_desc **cur_desc, uint32_t size)
+{
+ struct vring_desc *desc = *cur_desc;
+ uint64_t remain, addr, dlen, len;
+ uint32_t to_copy;
+ uint8_t *data = dst_data;
+ uint8_t *src;
+ int left = size;
+
+ rte_prefetch0(&vc_req->head[desc->next]);
+ to_copy = RTE_MIN(desc->len, (uint32_t)left);
+ dlen = to_copy;
+ src = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen,
+ VHOST_ACCESS_RO);
+ if (unlikely(!src || !dlen)) {
+ VC_LOG_ERR("Failed to map descriptor");
+ return -1;
+ }
+
+ rte_memcpy((uint8_t *)data, src, dlen);
+ data += dlen;
+
+ if (unlikely(dlen < to_copy)) {
+ remain = to_copy - dlen;
+ addr = desc->addr + dlen;
+
+ while (remain) {
+ len = remain;
+ src = IOVA_TO_VVA(uint8_t *, vc_req, addr, &len,
+ VHOST_ACCESS_RO);
+ if (unlikely(!src || !len)) {
+ VC_LOG_ERR("Failed to map descriptor");
+ return -1;
+ }
+
+ rte_memcpy(data, src, len);
+ addr += len;
+ remain -= len;
+ data += len;
+ }
+ }
+
+ left -= to_copy;
+
+ while ((desc->flags & VRING_DESC_F_NEXT) && left > 0) {
+ desc = &vc_req->head[desc->next];
+ rte_prefetch0(&vc_req->head[desc->next]);
+ to_copy = RTE_MIN(desc->len, (uint32_t)left);
+ dlen = desc->len;
+ src = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen,
+ VHOST_ACCESS_RO);
+ if (unlikely(!src || !dlen)) {
+ VC_LOG_ERR("Failed to map descriptor");
+ return -1;
+ }
+
+ rte_memcpy(data, src, dlen);
+ data += dlen;
+
+ if (unlikely(dlen < to_copy)) {
+ remain = to_copy - dlen;
+ addr = desc->addr + dlen;
+
+ while (remain) {
+ len = remain;
+ src = IOVA_TO_VVA(uint8_t *, vc_req, addr, &len,
+ VHOST_ACCESS_RO);
+ if (unlikely(!src || !len)) {
+ VC_LOG_ERR("Failed to map descriptor");
+ return -1;
+ }
+
+ rte_memcpy(data, src, len);
+ addr += len;
+ remain -= len;
+ data += len;
+ }
+ }
+
+ left -= to_copy;
+ }
+
+ if (unlikely(left > 0)) {
+ VC_LOG_ERR("Incorrect virtio descriptor");
+ return -1;
+ }
+
+ *cur_desc = &vc_req->head[desc->next];
+
+ return 0;
+}
+
+static __rte_always_inline void *
+get_data_ptr(struct vhost_crypto_data_req *vc_req, struct vring_desc **cur_desc,
+ uint32_t size, uint8_t perm)
+{
+ void *data;
+ uint64_t dlen = (*cur_desc)->len;
+
+ data = IOVA_TO_VVA(void *, vc_req, (*cur_desc)->addr, &dlen, perm);
+ if (unlikely(!data || dlen != (*cur_desc)->len)) {
+ VC_LOG_ERR("Failed to map object");
+ return NULL;
+ }
+
+ if (unlikely(move_desc(vc_req->head, cur_desc, size) < 0))
+ return NULL;
+
+ return data;
+}
+
+static int
+write_back_data(struct rte_crypto_op *op, struct vhost_crypto_data_req *vc_req)
+{
+ struct rte_mbuf *mbuf = op->sym->m_dst;
+ struct vring_desc *head = vc_req->head;
+ struct vring_desc *desc = vc_req->wb_desc;
+ int left = vc_req->wb_len;
+ uint32_t to_write;
+ uint8_t *src_data = mbuf->buf_addr, *dst;
+ uint64_t dlen;
+
+ rte_prefetch0(&head[desc->next]);
+ to_write = RTE_MIN(desc->len, (uint32_t)left);
+ dlen = desc->len;
+ dst = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen,
+ VHOST_ACCESS_RW);
+ if (unlikely(!dst || dlen != desc->len)) {
+ VC_LOG_ERR("Failed to map descriptor");
+ return -1;
+ }
+
+ rte_memcpy(dst, src_data, to_write);
+ left -= to_write;
+ src_data += to_write;
+
+ while ((desc->flags & VRING_DESC_F_NEXT) && left > 0) {
+ desc = &head[desc->next];
+ rte_prefetch0(&head[desc->next]);
+ to_write = RTE_MIN(desc->len, (uint32_t)left);
+ dlen = desc->len;
+ dst = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen,
+ VHOST_ACCESS_RW);
+ if (unlikely(!dst || dlen != desc->len)) {
+ VC_LOG_ERR("Failed to map descriptor");
+ return -1;
+ }
+
+ rte_memcpy(dst, src_data, to_write);
+ left -= to_write;
+ src_data += to_write;
+ }
+
+ if (unlikely(left < 0)) {
+ VC_LOG_ERR("Incorrect virtio descriptor");
+ return -1;
+ }
+
+ return 0;
+}
+
+static uint8_t
+prepare_sym_cipher_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
+ struct vhost_crypto_data_req *vc_req,
+ struct virtio_crypto_cipher_data_req *cipher,
+ struct vring_desc *cur_desc)
+{
+ struct vring_desc *desc = cur_desc;
+ struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst;
+ uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET);
+ uint8_t ret = 0;
+
+ /* prepare */
+ /* iv */
+ if (unlikely(copy_data(iv_data, vc_req, &desc,
+ cipher->para.iv_len) < 0)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ m_src->data_len = cipher->para.src_data_len;
+
+ switch (vcrypto->option) {
+ case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
+ m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr,
+ cipher->para.src_data_len);
+ m_src->buf_addr = get_data_ptr(vc_req, &desc,
+ cipher->para.src_data_len, VHOST_ACCESS_RO);
+ if (unlikely(m_src->buf_iova == 0 ||
+ m_src->buf_addr == NULL)) {
+ VC_LOG_ERR("zero_copy may fail due to cross page data");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ break;
+ case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
+ if (unlikely(cipher->para.src_data_len >
+ RTE_MBUF_DEFAULT_BUF_SIZE)) {
+ VC_LOG_ERR("Not enough space to do data copy");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *),
+ vc_req, &desc, cipher->para.src_data_len)
+ < 0)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+ break;
+ default:
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ /* dst */
+ desc = find_write_desc(vc_req->head, desc);
+ if (unlikely(!desc)) {
+ VC_LOG_ERR("Cannot find write location");
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ switch (vcrypto->option) {
+ case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
+ m_dst->buf_iova = gpa_to_hpa(vcrypto->dev,
+ desc->addr, cipher->para.dst_data_len);
+ m_dst->buf_addr = get_data_ptr(vc_req, &desc,
+ cipher->para.dst_data_len, VHOST_ACCESS_RW);
+ if (unlikely(m_dst->buf_iova == 0 || m_dst->buf_addr == NULL)) {
+ VC_LOG_ERR("zero_copy may fail due to cross page data");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+
+ m_dst->data_len = cipher->para.dst_data_len;
+ break;
+ case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
+ vc_req->wb_desc = desc;
+ vc_req->wb_len = cipher->para.dst_data_len;
+ if (unlikely(move_desc(vc_req->head, &desc,
+ vc_req->wb_len) < 0)) {
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ break;
+ default:
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ /* src data */
+ op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
+ op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
+
+ op->sym->cipher.data.offset = 0;
+ op->sym->cipher.data.length = cipher->para.src_data_len;
+
+ vc_req->inhdr = get_data_ptr(vc_req, &desc, INHDR_LEN, VHOST_ACCESS_WO);
+ if (unlikely(vc_req->inhdr == NULL)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ vc_req->inhdr->status = VIRTIO_CRYPTO_OK;
+ vc_req->len = cipher->para.dst_data_len + INHDR_LEN;
+
+ return 0;
+
+error_exit:
+ vc_req->len = INHDR_LEN;
+ return ret;
+}
+
+static uint8_t
+prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
+ struct vhost_crypto_data_req *vc_req,
+ struct virtio_crypto_alg_chain_data_req *chain,
+ struct vring_desc *cur_desc)
+{
+ struct vring_desc *desc = cur_desc;
+ struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst;
+ uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET);
+ uint32_t digest_offset;
+ void *digest_addr;
+ uint8_t ret = 0;
+
+ /* prepare */
+ /* iv */
+ if (unlikely(copy_data(iv_data, vc_req, &desc,
+ chain->para.iv_len) < 0)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ m_src->data_len = chain->para.src_data_len;
+ m_dst->data_len = chain->para.dst_data_len;
+
+ switch (vcrypto->option) {
+ case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
+ m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr,
+ chain->para.src_data_len);
+ m_src->buf_addr = get_data_ptr(vc_req, &desc,
+ chain->para.src_data_len, VHOST_ACCESS_RO);
+ if (unlikely(m_src->buf_iova == 0 || m_src->buf_addr == NULL)) {
+ VC_LOG_ERR("zero_copy may fail due to cross page data");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ break;
+ case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
+ if (unlikely(chain->para.src_data_len >
+ RTE_MBUF_DEFAULT_BUF_SIZE)) {
+ VC_LOG_ERR("Not enough space to do data copy");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *),
+ vc_req, &desc, chain->para.src_data_len)) < 0) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+ break;
+ default:
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ /* dst */
+ desc = find_write_desc(vc_req->head, desc);
+ if (unlikely(!desc)) {
+ VC_LOG_ERR("Cannot find write location");
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ switch (vcrypto->option) {
+ case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
+ m_dst->buf_iova = gpa_to_hpa(vcrypto->dev,
+ desc->addr, chain->para.dst_data_len);
+ m_dst->buf_addr = get_data_ptr(vc_req, &desc,
+ chain->para.dst_data_len, VHOST_ACCESS_RW);
+ if (unlikely(m_dst->buf_iova == 0 || m_dst->buf_addr == NULL)) {
+ VC_LOG_ERR("zero_copy may fail due to cross page data");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+
+ op->sym->auth.digest.phys_addr = gpa_to_hpa(vcrypto->dev,
+ desc->addr, chain->para.hash_result_len);
+ op->sym->auth.digest.data = get_data_ptr(vc_req, &desc,
+ chain->para.hash_result_len, VHOST_ACCESS_RW);
+ if (unlikely(op->sym->auth.digest.phys_addr == 0)) {
+ VC_LOG_ERR("zero_copy may fail due to cross page data");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ break;
+ case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
+ digest_offset = m_dst->data_len;
+ digest_addr = rte_pktmbuf_mtod_offset(m_dst, void *,
+ digest_offset);
+
+ vc_req->wb_desc = desc;
+ vc_req->wb_len = m_dst->data_len + chain->para.hash_result_len;
+
+ if (unlikely(move_desc(vc_req->head, &desc,
+ chain->para.dst_data_len) < 0)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ if (unlikely(copy_data(digest_addr, vc_req, &desc,
+ chain->para.hash_result_len)) < 0) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ op->sym->auth.digest.data = digest_addr;
+ op->sym->auth.digest.phys_addr = rte_pktmbuf_iova_offset(m_dst,
+ digest_offset);
+ break;
+ default:
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ /* record inhdr */
+ vc_req->inhdr = get_data_ptr(vc_req, &desc, INHDR_LEN, VHOST_ACCESS_WO);
+ if (unlikely(vc_req->inhdr == NULL)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+ vc_req->inhdr->status = VIRTIO_CRYPTO_OK;
+
+ op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
+ op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
+
+ op->sym->cipher.data.offset = chain->para.cipher_start_src_offset;
+ op->sym->cipher.data.length = chain->para.src_data_len -
+ chain->para.cipher_start_src_offset;
+
+ op->sym->auth.data.offset = chain->para.hash_start_src_offset;
+ op->sym->auth.data.length = chain->para.len_to_hash;
+
+ vc_req->len = chain->para.dst_data_len + chain->para.hash_result_len +
+ INHDR_LEN;
+ return 0;
+
+error_exit:
+ vc_req->len = INHDR_LEN;
+ return ret;
+}
+
+/**
+ * Process on descriptor
+ */
+static __rte_always_inline int
+vhost_crypto_process_one_req(struct vhost_crypto *vcrypto,
+ struct vhost_virtqueue *vq, struct rte_crypto_op *op,
+ struct vring_desc *head, uint16_t desc_idx)
+{
+ struct vhost_crypto_data_req *vc_req = RTE_PTR_ADD(op->sym->m_src,
+ sizeof(struct rte_mbuf));
+ struct rte_cryptodev_sym_session *session;
+ struct virtio_crypto_op_data_req *req, tmp_req;
+ struct virtio_crypto_inhdr *inhdr;
+ struct vring_desc *desc = NULL;
+ uint64_t session_id;
+ uint64_t dlen;
+ int err = 0;
+
+ vc_req->desc_idx = desc_idx;
+ vc_req->dev = vcrypto->dev;
+ vc_req->vq = vq;
+
+ if (likely(head->flags & VRING_DESC_F_INDIRECT)) {
+ dlen = head->len;
+ desc = IOVA_TO_VVA(struct vring_desc *, vc_req, head->addr,
+ &dlen, VHOST_ACCESS_RO);
+ if (unlikely(!desc || dlen != head->len))
+ return -1;
+ desc_idx = 0;
+ head = desc;
+ } else {
+ desc = head;
+ }
+
+ vc_req->head = head;
+ vc_req->zero_copy = vcrypto->option;
+
+ req = get_data_ptr(vc_req, &desc, sizeof(*req), VHOST_ACCESS_RO);
+ if (unlikely(req == NULL)) {
+ switch (vcrypto->option) {
+ case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
+ err = VIRTIO_CRYPTO_BADMSG;
+ VC_LOG_ERR("Invalid descriptor");
+ goto error_exit;
+ case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
+ req = &tmp_req;
+ if (unlikely(copy_data(req, vc_req, &desc, sizeof(*req))
+ < 0)) {
+ err = VIRTIO_CRYPTO_BADMSG;
+ VC_LOG_ERR("Invalid descriptor");
+ goto error_exit;
+ }
+ break;
+ default:
+ err = VIRTIO_CRYPTO_ERR;
+ VC_LOG_ERR("Invalid option");
+ goto error_exit;
+ }
+ }
+
+ switch (req->header.opcode) {
+ case VIRTIO_CRYPTO_CIPHER_ENCRYPT:
+ case VIRTIO_CRYPTO_CIPHER_DECRYPT:
+ session_id = req->header.session_id;
+
+ /* one branch to avoid unnecessary table lookup */
+ if (vcrypto->cache_session_id != session_id) {
+ err = rte_hash_lookup_data(vcrypto->session_map,
+ &session_id, (void **)&session);
+ if (unlikely(err < 0)) {
+ err = VIRTIO_CRYPTO_ERR;
+ VC_LOG_ERR("Failed to find session %"PRIu64,
+ session_id);
+ goto error_exit;
+ }
+
+ vcrypto->cache_session = session;
+ vcrypto->cache_session_id = session_id;
+ }
+
+ session = vcrypto->cache_session;
+
+ err = rte_crypto_op_attach_sym_session(op, session);
+ if (unlikely(err < 0)) {
+ err = VIRTIO_CRYPTO_ERR;
+ VC_LOG_ERR("Failed to attach session to op");
+ goto error_exit;
+ }
+
+ switch (req->u.sym_req.op_type) {
+ case VIRTIO_CRYPTO_SYM_OP_NONE:
+ err = VIRTIO_CRYPTO_NOTSUPP;
+ break;
+ case VIRTIO_CRYPTO_SYM_OP_CIPHER:
+ err = prepare_sym_cipher_op(vcrypto, op, vc_req,
+ &req->u.sym_req.u.cipher, desc);
+ break;
+ case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING:
+ err = prepare_sym_chain_op(vcrypto, op, vc_req,
+ &req->u.sym_req.u.chain, desc);
+ break;
+ }
+ if (unlikely(err != 0)) {
+ VC_LOG_ERR("Failed to process sym request");
+ goto error_exit;
+ }
+ break;
+ default:
+ VC_LOG_ERR("Unsupported symmetric crypto request type %u",
+ req->header.opcode);
+ goto error_exit;
+ }
+
+ return 0;
+
+error_exit:
+
+ inhdr = reach_inhdr(vc_req, desc);
+ if (likely(inhdr != NULL))
+ inhdr->status = (uint8_t)err;
+
+ return -1;
+}
+
+static __rte_always_inline struct vhost_virtqueue *
+vhost_crypto_finalize_one_request(struct rte_crypto_op *op,
+ struct vhost_virtqueue *old_vq)
+{
+ struct rte_mbuf *m_src = op->sym->m_src;
+ struct rte_mbuf *m_dst = op->sym->m_dst;
+ struct vhost_crypto_data_req *vc_req = RTE_PTR_ADD(m_src,
+ sizeof(struct rte_mbuf));
+ uint16_t desc_idx;
+ int ret = 0;
+
+ if (unlikely(!vc_req)) {
+ VC_LOG_ERR("Failed to retrieve vc_req");
+ return NULL;
+ }
+
+ if (old_vq && (vc_req->vq != old_vq))
+ return vc_req->vq;
+
+ desc_idx = vc_req->desc_idx;
+
+ if (unlikely(op->status != RTE_CRYPTO_OP_STATUS_SUCCESS))
+ vc_req->inhdr->status = VIRTIO_CRYPTO_ERR;
+ else {
+ if (vc_req->zero_copy == 0) {
+ ret = write_back_data(op, vc_req);
+ if (unlikely(ret != 0))
+ vc_req->inhdr->status = VIRTIO_CRYPTO_ERR;
+ }
+ }
+
+ vc_req->vq->used->ring[desc_idx].id = desc_idx;
+ vc_req->vq->used->ring[desc_idx].len = vc_req->len;
+
+ rte_mempool_put(m_dst->pool, (void *)m_dst);
+ rte_mempool_put(m_src->pool, (void *)m_src);
+
+ return vc_req->vq;
+}
+
+static __rte_always_inline uint16_t
+vhost_crypto_complete_one_vm_requests(struct rte_crypto_op **ops,
+ uint16_t nb_ops, int *callfd)
+{
+ uint16_t processed = 1;
+ struct vhost_virtqueue *vq, *tmp_vq;
+
+ if (unlikely(nb_ops == 0))
+ return 0;
+
+ vq = vhost_crypto_finalize_one_request(ops[0], NULL);
+ if (unlikely(vq == NULL))
+ return 0;
+ tmp_vq = vq;
+
+ while ((processed < nb_ops)) {
+ tmp_vq = vhost_crypto_finalize_one_request(ops[processed],
+ tmp_vq);
+
+ if (unlikely(vq != tmp_vq))
+ break;
+
+ processed++;
+ }
+
+ *callfd = vq->callfd;
+
+ *(volatile uint16_t *)&vq->used->idx += processed;
+
+ return processed;
+}
+
+int __rte_experimental
+rte_vhost_crypto_create(int vid, uint8_t cryptodev_id,
+ struct rte_mempool *sess_pool, int socket_id)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct rte_hash_parameters params = {0};
+ struct vhost_crypto *vcrypto;
+ char name[128];
+ int ret;
+
+ if (!dev) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ ret = rte_vhost_driver_set_features(dev->ifname,
+ VIRTIO_CRYPTO_FEATURES);
+ if (ret < 0) {
+ VC_LOG_ERR("Error setting features");
+ return -1;
+ }
+
+ vcrypto = rte_zmalloc_socket(NULL, sizeof(*vcrypto),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (!vcrypto) {
+ VC_LOG_ERR("Insufficient memory");
+ return -ENOMEM;
+ }
+
+ vcrypto->sess_pool = sess_pool;
+ vcrypto->cid = cryptodev_id;
+ vcrypto->cache_session_id = UINT64_MAX;
+ vcrypto->last_session_id = 1;
+ vcrypto->dev = dev;
+ vcrypto->option = RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE;
+
+ snprintf(name, 127, "HASH_VHOST_CRYPT_%u", (uint32_t)vid);
+ params.name = name;
+ params.entries = VHOST_CRYPTO_SESSION_MAP_ENTRIES;
+ params.hash_func = rte_jhash;
+ params.key_len = sizeof(uint64_t);
+ params.socket_id = socket_id;
+ vcrypto->session_map = rte_hash_create(¶ms);
+ if (!vcrypto->session_map) {
+ VC_LOG_ERR("Failed to creath session map");
+ ret = -ENOMEM;
+ goto error_exit;
+ }
+
+ snprintf(name, 127, "MBUF_POOL_VM_%u", (uint32_t)vid);
+ vcrypto->mbuf_pool = rte_pktmbuf_pool_create(name,
+ VHOST_CRYPTO_MBUF_POOL_SIZE, 512,
+ sizeof(struct vhost_crypto_data_req),
+ RTE_MBUF_DEFAULT_DATAROOM * 2 + RTE_PKTMBUF_HEADROOM,
+ rte_socket_id());
+ if (!vcrypto->mbuf_pool) {
+ VC_LOG_ERR("Failed to creath mbuf pool");
+ ret = -ENOMEM;
+ goto error_exit;
+ }
+
+ dev->extern_data = vcrypto;
+ dev->extern_ops.pre_msg_handle = NULL;
+ dev->extern_ops.post_msg_handle = vhost_crypto_msg_post_handler;
+
+ return 0;
+
+error_exit:
+ if (vcrypto->session_map)
+ rte_hash_free(vcrypto->session_map);
+ if (vcrypto->mbuf_pool)
+ rte_mempool_free(vcrypto->mbuf_pool);
+
+ rte_free(vcrypto);
+
+ return ret;
+}
+
+int __rte_experimental
+rte_vhost_crypto_free(int vid)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_crypto *vcrypto;
+
+ if (unlikely(dev == NULL)) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ vcrypto = dev->extern_data;
+ if (unlikely(vcrypto == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ rte_hash_free(vcrypto->session_map);
+ rte_mempool_free(vcrypto->mbuf_pool);
+ rte_free(vcrypto);
+
+ dev->extern_data = NULL;
+ dev->extern_ops.pre_msg_handle = NULL;
+ dev->extern_ops.post_msg_handle = NULL;
+
+ return 0;
+}
+
+int __rte_experimental
+rte_vhost_crypto_set_zero_copy(int vid, enum rte_vhost_crypto_zero_copy option)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_crypto *vcrypto;
+
+ if (unlikely(dev == NULL)) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ if (unlikely((uint32_t)option >=
+ RTE_VHOST_CRYPTO_MAX_ZERO_COPY_OPTIONS)) {
+ VC_LOG_ERR("Invalid option %i", option);
+ return -EINVAL;
+ }
+
+ vcrypto = (struct vhost_crypto *)dev->extern_data;
+ if (unlikely(vcrypto == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ if (vcrypto->option == (uint8_t)option)
+ return 0;
+
+ if (!(rte_mempool_full(vcrypto->mbuf_pool))) {
+ VC_LOG_ERR("Cannot update zero copy as mempool is not full");
+ return -EINVAL;
+ }
+
+ vcrypto->option = (uint8_t)option;
+
+ return 0;
+}
+
+uint16_t __rte_experimental
+rte_vhost_crypto_fetch_requests(int vid, uint32_t qid,
+ struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+ struct rte_mbuf *mbufs[VHOST_CRYPTO_MAX_BURST_SIZE * 2];
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_crypto *vcrypto;
+ struct vhost_virtqueue *vq;
+ uint16_t avail_idx;
+ uint16_t start_idx;
+ uint16_t required;
+ uint16_t count;
+ uint16_t i;
+
+ if (unlikely(dev == NULL)) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ if (unlikely(qid >= VHOST_MAX_QUEUE_PAIRS)) {
+ VC_LOG_ERR("Invalid qid %u", qid);
+ return -EINVAL;
+ }
+
+ vcrypto = (struct vhost_crypto *)dev->extern_data;
+ if (unlikely(vcrypto == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ vq = dev->virtqueue[qid];
+
+ avail_idx = *((volatile uint16_t *)&vq->avail->idx);
+ start_idx = vq->last_used_idx;
+ count = avail_idx - start_idx;
+ count = RTE_MIN(count, VHOST_CRYPTO_MAX_BURST_SIZE);
+ count = RTE_MIN(count, nb_ops);
+
+ if (unlikely(count == 0))
+ return 0;
+
+ /* for zero copy, we need 2 empty mbufs for src and dst, otherwise
+ * we need only 1 mbuf as src and dst
+ */
+ required = count * 2;
+ if (unlikely(rte_mempool_get_bulk(vcrypto->mbuf_pool, (void **)mbufs,
+ required) < 0)) {
+ VC_LOG_ERR("Insufficient memory");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < count; i++) {
+ uint16_t used_idx = (start_idx + i) & (vq->size - 1);
+ uint16_t desc_idx = vq->avail->ring[used_idx];
+ struct vring_desc *head = &vq->desc[desc_idx];
+ struct rte_crypto_op *op = ops[i];
+
+ op->sym->m_src = mbufs[i * 2];
+ op->sym->m_dst = mbufs[i * 2 + 1];
+ op->sym->m_src->data_off = 0;
+ op->sym->m_dst->data_off = 0;
+
+ if (unlikely(vhost_crypto_process_one_req(vcrypto, vq, op, head,
+ desc_idx)) < 0)
+ break;
+ }
+
+ vq->last_used_idx += i;
+
+ return i;
+}
+
+uint16_t __rte_experimental
+rte_vhost_crypto_finalize_requests(struct rte_crypto_op **ops,
+ uint16_t nb_ops, int *callfds, uint16_t *nb_callfds)
+{
+ struct rte_crypto_op **tmp_ops = ops;
+ uint16_t count = 0, left = nb_ops;
+ int callfd;
+ uint16_t idx = 0;
+
+ while (left) {
+ count = vhost_crypto_complete_one_vm_requests(tmp_ops, left,
+ &callfd);
+ if (unlikely(count == 0))
+ break;
+
+ tmp_ops = &tmp_ops[count];
+ left -= count;
+
+ callfds[idx++] = callfd;
+
+ if (unlikely(idx >= VIRTIO_CRYPTO_MAX_NUM_BURST_VQS)) {
+ VC_LOG_ERR("Too many vqs");
+ break;
+ }
+ }
+
+ *nb_callfds = idx;
+
+ return nb_ops - left;
+}
Code Review / deb_dpdk.git / blobdiff