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vdpa/mlx5: support device cleanup callback

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This patch supports device cleanup callback API which is called when
the device is disconnected from the VM. Cached resources like VM MR and
VQ memory are released.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Xueming Li 2022-05-08 17:25:53 +03:00 committed by Maxime Coquelin
parent 934ef2b666
commit d7e5d5a7e5
2 changed files with 24 additions and 0 deletions
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23
drivers/vdpa/mlx5/mlx5_vdpa.c
View File

@ -270,6 +270,8 @@ mlx5_vdpa_dev_close(int vid)
if (priv->lm_mr.addr)
mlx5_os_wrapped_mkey_destroy(&priv->lm_mr);
priv->state = MLX5_VDPA_STATE_PROBED;
if (!priv->connected)
mlx5_vdpa_dev_cache_clean(priv);
priv->vid = 0;
/* The mutex may stay locked after event thread cancel - initiate it. */
pthread_mutex_init(&priv->vq_config_lock, NULL);
@ -294,6 +296,7 @@ mlx5_vdpa_dev_config(int vid)
return -1;
}
priv->vid = vid;
priv->connected = true;
if (mlx5_vdpa_mtu_set(priv))
DRV_LOG(WARNING, "MTU cannot be set on device %s.",
vdev->device->name);
@ -431,12 +434,32 @@ mlx5_vdpa_reset_stats(struct rte_vdpa_device *vdev, int qid)
return mlx5_vdpa_virtq_stats_reset(priv, qid);
}
static int
mlx5_vdpa_dev_cleanup(int vid)
{
struct rte_vdpa_device *vdev = rte_vhost_get_vdpa_device(vid);
struct mlx5_vdpa_priv *priv;
if (vdev == NULL)
return -1;
priv = mlx5_vdpa_find_priv_resource_by_vdev(vdev);
if (priv == NULL) {
DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name);
return -1;
}
if (priv->state == MLX5_VDPA_STATE_PROBED)
mlx5_vdpa_dev_cache_clean(priv);
priv->connected = false;
return 0;
}
static struct rte_vdpa_dev_ops mlx5_vdpa_ops = {
.get_queue_num = mlx5_vdpa_get_queue_num,
.get_features = mlx5_vdpa_get_vdpa_features,
.get_protocol_features = mlx5_vdpa_get_protocol_features,
.dev_conf = mlx5_vdpa_dev_config,
.dev_close = mlx5_vdpa_dev_close,
.dev_cleanup = mlx5_vdpa_dev_cleanup,
.set_vring_state = mlx5_vdpa_set_vring_state,
.set_features = mlx5_vdpa_features_set,
.migration_done = NULL,

1
drivers/vdpa/mlx5/mlx5_vdpa.h
View File

@ -121,6 +121,7 @@ enum mlx5_dev_state {
struct mlx5_vdpa_priv {
TAILQ_ENTRY(mlx5_vdpa_priv) next;
bool connected;
enum mlx5_dev_state state;
pthread_mutex_t vq_config_lock;
uint64_t no_traffic_counter;