[PATCH vhost 6/7] vdpa/mlx5: Mark vq state for modification in hw vq

[Dragos Tatulea]

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

Signed-off-by: Dragos Tatulea <dtatu...@nvidia.com>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c  | 8 ++++++++
 include/linux/mlx5/mlx5_ifc_vdpa.h | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c 
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 2277daf4814f..6325aef045e2 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -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;
 }
 
diff --git a/include/linux/mlx5/mlx5_ifc_vdpa.h 
b/include/linux/mlx5/mlx5_ifc_vdpa.h
index 9594ac405740..32e712106e68 100644
--- a/include/linux/mlx5/mlx5_ifc_vdpa.h
+++ b/include/linux/mlx5/mlx5_ifc_vdpa.h
@@ -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,
 };
 
-- 
2.42.0