author: Eli Cohen <elic@nvidia.com> 2021-08-11 08:37:59 +0300
committer: Sasha Levin <sashal@kernel.org> 2021-08-26 08:35:05 -0400
commit: 88e35118e7c9661a84abab96373680c03f55feee
parent: c903a1fd0968a09b9a4df8e0bd24d6030ede6604
Commit Summary:
Diffstat:
1 file changed, 10 insertions, 4 deletions
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index f3495386698a..103d8f70df8e 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -752,12 +752,12 @@ static int get_queue_type(struct mlx5_vdpa_net *ndev)
type_mask = MLX5_CAP_DEV_VDPA_EMULATION(ndev->mvdev.mdev, virtio_queue_type);
/* prefer split queue */
- if (type_mask & MLX5_VIRTIO_EMULATION_CAP_VIRTIO_QUEUE_TYPE_PACKED)
- return MLX5_VIRTIO_EMULATION_VIRTIO_QUEUE_TYPE_PACKED;
+ if (type_mask & MLX5_VIRTIO_EMULATION_CAP_VIRTIO_QUEUE_TYPE_SPLIT)
+ return MLX5_VIRTIO_EMULATION_VIRTIO_QUEUE_TYPE_SPLIT;
- WARN_ON(!(type_mask & MLX5_VIRTIO_EMULATION_CAP_VIRTIO_QUEUE_TYPE_SPLIT));
+ WARN_ON(!(type_mask & MLX5_VIRTIO_EMULATION_CAP_VIRTIO_QUEUE_TYPE_PACKED));
- return MLX5_VIRTIO_EMULATION_VIRTIO_QUEUE_TYPE_SPLIT;
+ return MLX5_VIRTIO_EMULATION_VIRTIO_QUEUE_TYPE_PACKED;
}
static bool vq_is_tx(u16 idx)
@@ -2010,6 +2010,12 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name)
return -ENOSPC;
mdev = mgtdev->madev->mdev;
+ if (!(MLX5_CAP_DEV_VDPA_EMULATION(mdev, virtio_queue_type) &
+ MLX5_VIRTIO_EMULATION_CAP_VIRTIO_QUEUE_TYPE_SPLIT)) {
+ dev_warn(mdev->device, "missing support for split virtqueues\n");
+ return -EOPNOTSUPP;
+ }
+
/* we save one virtqueue for control virtqueue should we require it */
max_vqs = MLX5_CAP_DEV_VDPA_EMULATION(mdev, max_num_virtio_queues);
max_vqs = min_t(u32, max_vqs, MLX5_MAX_SUPPORTED_VQS);