int retries = MLX5_VDPA_INTR_RETRIES;
int ret = -EAGAIN;
- if (virtq->intr_handle.fd) {
+ if (virtq->intr_handle.fd != -1) {
while (retries-- && ret == -EAGAIN) {
ret = rte_intr_callback_unregister(&virtq->intr_handle,
mlx5_vdpa_virtq_handler,
usleep(MLX5_VDPA_INTR_RETRIES_USEC);
}
}
- memset(&virtq->intr_handle, 0, sizeof(virtq->intr_handle));
+ virtq->intr_handle.fd = -1;
}
- if (virtq->virtq) {
+ if (virtq->virtq)
claim_zero(mlx5_devx_cmd_destroy(virtq->virtq));
- virtq->virtq = NULL;
- }
+ virtq->virtq = NULL;
for (i = 0; i < RTE_DIM(virtq->umems); ++i) {
if (virtq->umems[i].obj)
claim_zero(mlx5_glue->devx_umem_dereg
void
mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv)
{
- struct mlx5_vdpa_virtq *entry;
- struct mlx5_vdpa_virtq *next;
+ int i;
- entry = SLIST_FIRST(&priv->virtq_list);
- while (entry) {
- next = SLIST_NEXT(entry, next);
- mlx5_vdpa_virtq_unset(entry);
- SLIST_REMOVE(&priv->virtq_list, entry, mlx5_vdpa_virtq, next);
- rte_free(entry);
- entry = next;
+ for (i = 0; i < priv->nr_virtqs; i++) {
+ mlx5_vdpa_virtq_unset(&priv->virtqs[i]);
+ priv->virtqs[i].enable = 0;
}
- SLIST_INIT(&priv->virtq_list);
if (priv->tis) {
claim_zero(mlx5_devx_cmd_destroy(priv->tis));
priv->tis = NULL;
priv->virtq_db_addr = NULL;
}
priv->features = 0;
+ priv->nr_virtqs = 0;
}
int
return mlx5_devx_cmd_modify_virtq(virtq->virtq, &attr);
}
+int
+mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index)
+{
+ struct mlx5_devx_virtq_attr attr = {0};
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+ int ret = mlx5_vdpa_virtq_modify(virtq, 0);
+
+ if (ret)
+ return -1;
+ if (mlx5_devx_cmd_query_virtq(virtq->virtq, &attr)) {
+ DRV_LOG(ERR, "Failed to query virtq %d.", index);
+ return -1;
+ }
+ DRV_LOG(INFO, "Query vid %d vring %d: hw_available_idx=%d, "
+ "hw_used_index=%d", priv->vid, index,
+ attr.hw_available_index, attr.hw_used_index);
+ ret = rte_vhost_set_vring_base(priv->vid, index,
+ attr.hw_available_index,
+ attr.hw_used_index);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to set virtq %d base.", index);
+ return -1;
+ }
+ return 0;
+}
+
static uint64_t
mlx5_vdpa_hva_to_gpa(struct rte_vhost_memory *mem, uint64_t hva)
{
}
static int
-mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv,
- struct mlx5_vdpa_virtq *virtq, int index)
+mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv, int index)
{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
struct rte_vhost_vring vq;
struct mlx5_devx_virtq_attr attr = {0};
uint64_t gpa;
goto error;
if (mlx5_vdpa_virtq_modify(virtq, 1))
goto error;
- virtq->enable = 1;
virtq->priv = priv;
- /* Be sure notifications are not missed during configuration. */
- claim_zero(rte_vhost_enable_guest_notification(priv->vid, index, 1));
rte_write32(virtq->index, priv->virtq_db_addr);
/* Setup doorbell mapping. */
virtq->intr_handle.fd = vq.kickfd;
- virtq->intr_handle.type = RTE_INTR_HANDLE_EXT;
- if (rte_intr_callback_register(&virtq->intr_handle,
- mlx5_vdpa_virtq_handler, virtq)) {
- virtq->intr_handle.fd = 0;
- DRV_LOG(ERR, "Failed to register virtq %d interrupt.", index);
- goto error;
+ if (virtq->intr_handle.fd == -1) {
+ DRV_LOG(WARNING, "Virtq %d kickfd is invalid.", index);
+ if (!priv->direct_notifier) {
+ DRV_LOG(ERR, "Virtq %d cannot be notified.", index);
+ goto error;
+ }
} else {
- DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
- virtq->intr_handle.fd, index);
+ virtq->intr_handle.type = RTE_INTR_HANDLE_EXT;
+ if (rte_intr_callback_register(&virtq->intr_handle,
+ mlx5_vdpa_virtq_handler,
+ virtq)) {
+ virtq->intr_handle.fd = -1;
+ DRV_LOG(ERR, "Failed to register virtq %d interrupt.",
+ index);
+ goto error;
+ } else {
+ DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
+ virtq->intr_handle.fd, index);
+ }
}
return 0;
error:
mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv)
{
struct mlx5_devx_tis_attr tis_attr = {0};
- struct mlx5_vdpa_virtq *virtq;
uint32_t i;
uint16_t nr_vring = rte_vhost_get_vring_num(priv->vid);
int ret = rte_vhost_get_negotiated_features(priv->vid, &priv->features);
DRV_LOG(ERR, "Failed to configure negotiated features.");
return -1;
}
+ if (nr_vring > priv->caps.max_num_virtio_queues * 2) {
+ DRV_LOG(ERR, "Do not support more than %d virtqs(%d).",
+ (int)priv->caps.max_num_virtio_queues * 2,
+ (int)nr_vring);
+ return -1;
+ }
/* Always map the entire page. */
priv->virtq_db_addr = mmap(NULL, priv->var->length, PROT_READ |
PROT_WRITE, MAP_SHARED, priv->ctx->cmd_fd,
DRV_LOG(ERR, "Failed to create TIS.");
goto error;
}
+ priv->nr_virtqs = nr_vring;
for (i = 0; i < nr_vring; i++) {
- virtq = rte_zmalloc(__func__, sizeof(*virtq), 0);
- if (!virtq || mlx5_vdpa_virtq_setup(priv, virtq, i)) {
- if (virtq)
- rte_free(virtq);
+ claim_zero(rte_vhost_enable_guest_notification(priv->vid, i,
+ 1));
+ if (mlx5_vdpa_virtq_setup(priv, i))
goto error;
- }
- SLIST_INSERT_HEAD(&priv->virtq_list, virtq, next);
}
- priv->nr_virtqs = nr_vring;
return 0;
error:
mlx5_vdpa_virtqs_release(priv);
return -1;
}
+
+int
+mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable)
+{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+ int ret;
+
+ DRV_LOG(INFO, "Update virtq %d status %sable -> %sable.", index,
+ virtq->enable ? "en" : "dis", enable ? "en" : "dis");
+ if (virtq->enable == !!enable)
+ return 0;
+ if (!priv->configured) {
+ virtq->enable = !!enable;
+ return 0;
+ }
+ if (enable) {
+ /* Configuration might have been updated - reconfigure virtq. */
+ if (virtq->virtq) {
+ ret = mlx5_vdpa_virtq_stop(priv, index);
+ if (ret)
+ DRV_LOG(WARNING, "Failed to stop virtq %d.",
+ index);
+ mlx5_vdpa_virtq_unset(virtq);
+ }
+ ret = mlx5_vdpa_virtq_setup(priv, index);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to setup virtq %d.", index);
+ return ret;
+ /* The only case virtq can stay invalid. */
+ }
+ }
+ virtq->enable = !!enable;
+ if (is_virtq_recvq(virtq->index, priv->nr_virtqs)) {
+ /* Need to add received virtq to the RQT table of the TIRs. */
+ ret = mlx5_vdpa_steer_update(priv);
+ if (ret) {
+ virtq->enable = !enable;
+ return ret;
+ }
+ }
+ return 0;
+}
git.droids-corp.org / dpdk.git / blobdiff