vxlan: ICMP error lookup handler (c3a43b9f) · Commits · 戴 / test

drivers/net/vxlan.c

+29 −0

Original line number	Diff line number	Diff line
		@@ -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;