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virtio-net: introduce and use helper function for guest gso support checks

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Probe routine is already several hundred lines.
Use helper function for guest gso support check.

Signed-off-by: Gavin Li <gavinl@nvidia.com>
Reviewed-by: Gavi Teitz <gavi@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Message-Id: <20220914144911.56422-2-gavinl@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gavin Li 2022-09-14 17:49:10 +03:00 committed by Michael S. Tsirkin
parent cdbd952bb7
commit 46cd26f410
1 changed files with 9 additions and 4 deletions
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13
drivers/net/virtio_net.c
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@ -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))