On Tue, 30 Aug 2022 05:26:33 +0300, Gavin Li <gavinl@xxxxxxxxxx> wrote:
> Probe routine is already several hundred lines.
> Use helper function for guest gso support check.
>
> Signed-off-by: Gavin Li <gavinl@xxxxxxxxxx>
> Reviewed-by: Gavi Teitz <gavi@xxxxxxxxxx>
> Reviewed-by: Parav Pandit <parav@xxxxxxxxxx>
Reviewed-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
> ---
> changelog:
> v1->v2
> - Add new patch
> ---
> drivers/net/virtio_net.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 9cce7dec7366..e1904877d461 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -3682,6 +3682,14 @@ static int virtnet_validate(struct virtio_device *vdev)
> return 0;
> }
>
> +static bool virtnet_check_guest_gso(const struct virtnet_info *vi)
> +{
> + return (virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_TSO4) ||
> + virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_TSO6) ||
> + virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_ECN) ||
> + virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_UFO));
> +}
> +
> static int virtnet_probe(struct virtio_device *vdev)
> {
> int i, err = -ENOMEM;
> @@ -3777,10 +3785,7 @@ static int virtnet_probe(struct virtio_device *vdev)
> spin_lock_init(&vi->refill_lock);
>
> /* If we can receive ANY GSO packets, we must allocate large ones. */
> - if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO4) ||
> - virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO6) ||
> - virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_ECN) ||
> - virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_UFO))
> + if (virtnet_check_guest_gso(vi))
> vi->big_packets = true;
>
> if (virtio_has_feature(vdev, VIRTIO_NET_F_MRG_RXBUF))
> --
> 2.31.1
>
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