diff options
| author | Dragos Tatulea <dtatulea@nvidia.com> | 2023-07-27 20:23:46 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-08-10 15:24:28 -0400 |
| commit | 3fe024193340b225d1fd410d78c495434a9d68e0 (patch) | |
| tree | fdc8bd46d74575dbcda361de38d6fe14bde96d1b /drivers/vdpa | |
| parent | df9557046440b0a62250fee3169a8f6a139f55a6 (diff) | |
| download | linux-3fe024193340b225d1fd410d78c495434a9d68e0.tar.gz | |
vdpa/mlx5: Correct default number of queues when MQ is on
The standard specifies that the initial number of queues is the
default, which is 1 (1 tx, 1 rx).
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230727172354.68243-2-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/mlx5/net/mlx5_vnet.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c index 9138ef2fb2c85..6b6eb69a8a906 100644 --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -2517,7 +2517,15 @@ static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 features) else ndev->rqt_size = 1; - ndev->cur_num_vqs = 2 * ndev->rqt_size; + /* Device must start with 1 queue pair, as per VIRTIO v1.2 spec, section + * 5.1.6.5.5 "Device operation in multiqueue mode": + * + * Multiqueue is disabled by default. + * The driver enables multiqueue by sending a command using class + * VIRTIO_NET_CTRL_MQ. The command selects the mode of multiqueue + * operation, as follows: ... + */ + ndev->cur_num_vqs = 2; update_cvq_info(mvdev); return err; |