This patch adds public API implementation to vhost crypto
Signed-off-by: Fan Zhang <roy.fan.zh...@intel.com>
---
lib/librte_vhost/vhost_crypto.c | 274 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 274 insertions(+)
diff --git a/lib/librte_vhost/vhost_crypto.c b/lib/librte_vhost/vhost_crypto.c
index 3b6323cda..3233953be 100644
--- a/lib/librte_vhost/vhost_crypto.c
+++ b/lib/librte_vhost/vhost_crypto.c
@@ -1004,3 +1004,277 @@ vhost_crypto_complete_one_vm_requests(struct
rte_crypto_op **ops,
return processed;
}
+
+
+int
+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_user_dev_priv *priv;
+ struct vhost_crypto *vcrypto;
+ char name[128];
+ int ret;
+
+ if (vid >= VIRTIO_CRYPTO_MAX_NUM_DEVS || !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;
+ }
+
+ priv = rte_zmalloc_socket(NULL, sizeof(*priv) + sizeof(*vcrypto),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (!priv) {
+ VC_LOG_ERR("Insufficient memory");
+ return -ENOMEM;
+ }
+
+ vcrypto = (struct vhost_crypto *)priv->data;
+
+ vcrypto->sess_pool = sess_pool;
+ vcrypto->cid = cryptodev_id;
+ vcrypto->cache_session_id = UINT64_MAX;
+ vcrypto->last_session_id = 1;
+ vcrypto->dev = dev;
+
+ snprintf(name, 127, "HASH_VHOST_CRYPT_%u", (uint32_t)vid);
+ params.name = name;
+ params.entries = 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;
+ }
+
+ /** by default the zero copy is disabled, thus we need big enough
+ * mbufs.
+ */
+ 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_BUF_SIZE * 2, rte_socket_id());
+ if (!vcrypto->mbuf_pool) {
+ VC_LOG_ERR("Failed to creath mbuf pool");
+ ret = -ENOMEM;
+ goto error_exit;
+ }
+
+ priv->vhost_user_msg_handler = vhost_crypto_msg_handler;
+ dev->private_data = (void *)priv;
+
+ 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(priv);
+
+ return ret;
+}
+
+int
+rte_vhost_crypto_free(int vid)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_user_dev_priv *priv;
+ struct vhost_crypto *vcrypto;
+
+ if (unlikely(dev == NULL)) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ priv = dev->private_data;
+ if (unlikely(priv == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ vcrypto = (struct vhost_crypto *)priv->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(priv);
+
+ dev->private_data = NULL;
+
+ return 0;
+}
+
+int
+rte_vhost_crypto_set_zero_copy(int vid, uint32_t enable_zc)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_user_dev_priv *priv;
+ struct vhost_crypto *vcrypto;
+ uint32_t buf_size;
+ char name[128];
+
+ if (unlikely(dev == NULL)) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ priv = dev->private_data;
+ if (unlikely(priv == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ vcrypto = (struct vhost_crypto *)priv->data;
+ if (unlikely(vcrypto == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ if (vcrypto->zero_copy == (uint8_t)enable_zc)
+ return 0;
+
+ if (!(rte_mempool_full(vcrypto->mbuf_pool))) {
+ VC_LOG_ERR("Cannot update zero copy as mempool is not full");
+ return -EINVAL;
+ }
+
+ buf_size = enable_zc ? 0 : (RTE_MBUF_DEFAULT_BUF_SIZE * 2);
+
+ rte_mempool_free(vcrypto->mbuf_pool);
+ 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), buf_size,
+ rte_socket_id());
+ if (!vcrypto->mbuf_pool) {
+ VC_LOG_ERR("Failed to creath mbuf pool");
+ return -ENOMEM;
+ }
+
+ vcrypto->zero_copy = enable_zc ? 1 : 0;
+
+ return 0;
+}
+
+uint16_t
+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_user_dev_priv *priv;
+ struct rte_vhost_memory *mem;
+ 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;
+ }
+
+ priv = dev->private_data;
+ if (unlikely(priv == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ vcrypto = (struct vhost_crypto *)priv->data;
+ if (unlikely(vcrypto == NULL)) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ vq = dev->virtqueue[qid];
+ mem = dev->mem;
+
+ 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, mem)) < 0)
+ break;
+ }
+
+ vq->last_used_idx += i;
+
+ return i;
+}
+
+uint16_t
+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;
+}
--
2.13.6
