diff options
| author | Jason Wang <jasowang@redhat.com> | 2016-12-23 15:37:30 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-23 19:48:55 +0100 |
| commit | 92502fe86c7c9b3f8543f29641a3c71805e82757 (patch) | |
| tree | bc1fce9b60d284ed0706397cd6dc631a65684453 /drivers/net/virtio_net.c | |
| parent | virtio-net: make rx buf size estimation works for XDP (diff) | |
| download | linux-92502fe86c7c9b3f8543f29641a3c71805e82757.tar.xz linux-92502fe86c7c9b3f8543f29641a3c71805e82757.zip | |
virtio-net: forbid XDP when VIRTIO_NET_F_GUEST_UFO is support
When VIRTIO_NET_F_GUEST_UFO is negotiated, host could still send UFO
packet that exceeds a single page which could not be handled
correctly by XDP. So this patch forbids setting XDP when GUEST_UFO is
supported. While at it, forbid XDP for ECN (which comes only from GRO)
too to prevent user from misconfiguration.
Cc: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 77ae358ec630..c1f66d8bfb7b 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1684,7 +1684,9 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog) int i, err; if (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_TSO6) || + virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_ECN) || + virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_UFO)) { netdev_warn(dev, "can't set XDP while host is implementing LRO, disable LRO first\n"); return -EOPNOTSUPP; } |