diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2017-06-15 17:29:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-16 11:58:36 -0400 |
| commit | 5b0e6629be5958d70e1f3263b021f0e4038fc675 (patch) | |
| tree | 0e84e92122e4da2d6fa476c1ef34578ea771f6aa | |
| parent | 821b2e294433f3b4e7db6911da5b0806c38d7bda (diff) | |
| download | linux-5b0e6629be5958d70e1f3263b021f0e4038fc675.tar.bz2 | |
bpf: virtio_net: Report bpf_prog ID during XDP_QUERY_PROG
Add support to virtio_net to report bpf_prog ID during XDP_QUERY_PROG.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jason Wang <jasowang@redhat.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/virtio_net.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 6bacbd2f0eca..5c6388fb7dd1 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1955,16 +1955,18 @@ virtio_reset_err: return err; } -static bool virtnet_xdp_query(struct net_device *dev) +static u32 virtnet_xdp_query(struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); + const struct bpf_prog *xdp_prog; int i; for (i = 0; i < vi->max_queue_pairs; i++) { - if (vi->rq[i].xdp_prog) - return true; + xdp_prog = rtnl_dereference(vi->rq[i].xdp_prog); + if (xdp_prog) + return xdp_prog->aux->id; } - return false; + return 0; } static int virtnet_xdp(struct net_device *dev, struct netdev_xdp *xdp) @@ -1973,7 +1975,8 @@ static int virtnet_xdp(struct net_device *dev, struct netdev_xdp *xdp) case XDP_SETUP_PROG: return virtnet_xdp_set(dev, xdp->prog, xdp->extack); case XDP_QUERY_PROG: - xdp->prog_attached = virtnet_xdp_query(dev); + xdp->prog_id = virtnet_xdp_query(dev); + xdp->prog_attached = !!xdp->prog_id; return 0; default: return -EINVAL; |