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vdpa/mlx5: Mark vq state for modification in hw vq

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.set_vq_state will set the indices and mark the fields to be modified in
the hw vq.

Advertise that the device supports changing the vq state when the device
is in DRIVER_OK state and suspended.

Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231225151203.152687-6-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dragos Tatulea 2023-12-25 17:12:00 +02:00 committed by Michael S. Tsirkin
parent 9b23417825
commit 60c43b3f6b
2 changed files with 10 additions and 0 deletions
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8
drivers/vdpa/mlx5/net/mlx5_vnet.c
View File

@ -1249,6 +1249,12 @@ static int modify_virtqueue(struct mlx5_vdpa_net *ndev,
MLX5_SET64(virtio_q, vq_ctx, available_addr, mvq->driver_addr);
}
if (mvq->modified_fields & MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_AVAIL_IDX)
MLX5_SET(virtio_net_q_object, obj_context, hw_available_index, mvq->avail_idx);
if (mvq->modified_fields & MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_USED_IDX)
MLX5_SET(virtio_net_q_object, obj_context, hw_used_index, mvq->used_idx);
MLX5_SET64(virtio_net_q_object, obj_context, modify_field_select, mvq->modified_fields);
err = mlx5_cmd_exec(ndev->mvdev.mdev, in, inlen, out, sizeof(out));
if (err)
@ -2328,6 +2334,8 @@ static int mlx5_vdpa_set_vq_state(struct vdpa_device *vdev, u16 idx,
mvq->used_idx = state->split.avail_index;
mvq->avail_idx = state->split.avail_index;
mvq->modified_fields |= MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_AVAIL_IDX |
MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_USED_IDX;
return 0;
}

2
include/linux/mlx5/mlx5_ifc_vdpa.h
View File

@ -146,6 +146,8 @@ enum {
MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_PARAMS = (u64)1 << 3,
MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_DUMP_ENABLE = (u64)1 << 4,
MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_ADDRS = (u64)1 << 6,
MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_AVAIL_IDX = (u64)1 << 7,
MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_USED_IDX = (u64)1 << 8,
MLX5_VIRTQ_MODIFY_MASK_DESC_GROUP_MKEY = (u64)1 << 14,
};