diff options
| author |   Stefano Brivio <sbrivio@redhat.com> | 2018-11-08 12:19:15 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-08 17:13:08 -0800 |
| commit | c3a43b9fec8a1d0cd6c5b404d2c378ac873facad (patch) | |
| tree | c72f4c5cebf2800286af29fd0fd7626d8fc29b28 /drivers/net/vxlan.c | |
| parent | udp: Handle ICMP errors for tunnels with same destination port on both endpoints (diff) | |
| download | linux-dev-c3a43b9fec8a1d0cd6c5b404d2c378ac873facad.tar.xz linux-dev-c3a43b9fec8a1d0cd6c5b404d2c378ac873facad.zip | |
vxlan: ICMP error lookup handler
Export an encap_err_lookup() operation to match an ICMP error against a
valid VNI.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index ae969f806d56..0851af6733f3 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1552,6 +1552,34 @@ drop: return 0; } +/* Callback from net/ipv{4,6}/udp.c to check that we have a VNI for errors */ +static int vxlan_err_lookup(struct sock *sk, struct sk_buff *skb) +{ + struct vxlan_dev *vxlan; + struct vxlan_sock *vs; + struct vxlanhdr *hdr; + __be32 vni; + + if (skb->len < VXLAN_HLEN) + return -EINVAL; + + hdr = vxlan_hdr(skb); + + if (!(hdr->vx_flags & VXLAN_HF_VNI)) + return -EINVAL; + + vs = rcu_dereference_sk_user_data(sk); + if (!vs) + return -ENOENT; + + vni = vxlan_vni(hdr->vx_vni); + vxlan = vxlan_vs_find_vni(vs, skb->dev->ifindex, vni); + if (!vxlan) + return -ENOENT; + + return 0; +} + static int arp_reduce(struct net_device *dev, struct sk_buff *skb, __be32 vni) { struct vxlan_dev *vxlan = netdev_priv(dev); @@ -2948,6 +2976,7 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, bool ipv6, tunnel_cfg.sk_user_data = vs; tunnel_cfg.encap_type = 1; tunnel_cfg.encap_rcv = vxlan_rcv; + tunnel_cfg.encap_err_lookup = vxlan_err_lookup; tunnel_cfg.encap_destroy = NULL; tunnel_cfg.gro_receive = vxlan_gro_receive; tunnel_cfg.gro_complete = vxlan_gro_complete; |