diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2017-01-25 23:56:36 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-01-26 04:48:40 +0100 |
| commit | 529ec6ac26656378435eb0396a780f017d51e105 (patch) | |
| tree | dcf4ad8675032d01620f9e4a2ed1a32cdb35026f /drivers | |
| parent | virtio_net: use dev_kfree_skb for small buffer XDP receive (diff) | |
| download | linux-529ec6ac26656378435eb0396a780f017d51e105.tar.xz linux-529ec6ac26656378435eb0396a780f017d51e105.zip | |
virtio_net: reject XDP programs using header adjustment
commit 17bedab27231 ("bpf: xdp: Allow head adjustment in XDP prog")
added a new XDP helper to prepend and remove data from a frame.
Make virtio_net reject programs making use of this helper until
proper support is added.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/virtio_net.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 4c6e9b43f1d3..765c2d6358da 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1715,6 +1715,11 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog) u16 xdp_qp = 0, curr_qp; int i, err; + if (prog && prog->xdp_adjust_head) { + netdev_warn(dev, "Does not support bpf_xdp_adjust_head()\n"); + return -EOPNOTSUPP; + } + 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_ECN) || |