1 files changed, 59 insertions, 16 deletions

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 6369a5734d4c..ba363cedef80 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1158,7 +1158,6 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
         struct pcpu_sw_netstats *stats;
         union vxlan_addr saddr;
         int err = 0;
-        union vxlan_addr *remote_ip;
 
         /* For flow based devices, map all packets to VNI 0 */
         if (vs->flags & VXLAN_F_COLLECT_METADATA)
@@ -1169,7 +1168,6 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
         if (!vxlan)
                 goto drop;
 
-        remote_ip = &vxlan->default_dst.remote_ip;
         skb_reset_mac_header(skb);
         skb_scrub_packet(skb, !net_eq(vxlan->net, dev_net(vxlan->dev)));
         skb->protocol = eth_type_trans(skb, vxlan->dev);
@@ -1179,8 +1177,8 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
         if (ether_addr_equal(eth_hdr(skb)->h_source, vxlan->dev->dev_addr))
                 goto drop;
 
-        /* Re-examine inner Ethernet packet */
-        if (remote_ip->sa.sa_family == AF_INET) {
+        /* Get data from the outer IP header */
+        if (vxlan_get_sk_family(vs) == AF_INET) {
                 oip = ip_hdr(skb);
                 saddr.sin.sin_addr.s_addr = oip->saddr;
                 saddr.sa.sa_family = AF_INET;
@@ -1848,6 +1846,34 @@ static int vxlan_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *sk
                                    !(vxflags & VXLAN_F_UDP_CSUM));
 }
 
+#if IS_ENABLED(CONFIG_IPV6)
+static struct dst_entry *vxlan6_get_route(struct vxlan_dev *vxlan,
+                                          struct sk_buff *skb, int oif,
+                                          const struct in6_addr *daddr,
+                                          struct in6_addr *saddr)
+{
+        struct dst_entry *ndst;
+        struct flowi6 fl6;
+        int err;
+
+        memset(&fl6, 0, sizeof(fl6));
+        fl6.flowi6_oif = oif;
+        fl6.daddr = *daddr;
+        fl6.saddr = vxlan->cfg.saddr.sin6.sin6_addr;
+        fl6.flowi6_mark = skb->mark;
+        fl6.flowi6_proto = IPPROTO_UDP;
+
+        err = ipv6_stub->ipv6_dst_lookup(vxlan->net,
+                                         vxlan->vn6_sock->sock->sk,
+                                         &ndst, &fl6);
+        if (err < 0)
+                return ERR_PTR(err);
+
+        *saddr = fl6.saddr;
+        return ndst;
+}
+#endif
+
 /* Bypass encapsulation if the destination is local */
 static void vxlan_encap_bypass(struct sk_buff *skb, struct vxlan_dev *src_vxlan,
                                struct vxlan_dev *dst_vxlan)
@@ -2035,21 +2061,17 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
 #if IS_ENABLED(CONFIG_IPV6)
         } else {
                 struct dst_entry *ndst;
-                struct flowi6 fl6;
+                struct in6_addr saddr;
                 u32 rt6i_flags;
 
                 if (!vxlan->vn6_sock)
                         goto drop;
                 sk = vxlan->vn6_sock->sock->sk;
 
-                memset(&fl6, 0, sizeof(fl6));
-                fl6.flowi6_oif = rdst ? rdst->remote_ifindex : 0;
-                fl6.daddr = dst->sin6.sin6_addr;
-                fl6.saddr = vxlan->cfg.saddr.sin6.sin6_addr;
-                fl6.flowi6_mark = skb->mark;
-                fl6.flowi6_proto = IPPROTO_UDP;
-
-                if (ipv6_stub->ipv6_dst_lookup(vxlan->net, sk, &ndst, &fl6)) {
+                ndst = vxlan6_get_route(vxlan, skb,
+                                        rdst ? rdst->remote_ifindex : 0,
+                                        &dst->sin6.sin6_addr, &saddr);
+                if (IS_ERR(ndst)) {
                         netdev_dbg(dev, "no route to %pI6\n",
                                    &dst->sin6.sin6_addr);
                         dev->stats.tx_carrier_errors++;
@@ -2081,7 +2103,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
                 }
 
                 ttl = ttl ? : ip6_dst_hoplimit(ndst);
-                err = vxlan6_xmit_skb(ndst, sk, skb, dev, &fl6.saddr, &fl6.daddr,
+                err = vxlan6_xmit_skb(ndst, sk, skb, dev, &saddr, &dst->sin6.sin6_addr,
                                       0, ttl, src_port, dst_port, htonl(vni << 8), md,
                                       !net_eq(vxlan->net, dev_net(vxlan->dev)),
                                       flags);
@@ -2395,9 +2417,30 @@ static int vxlan_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
                                   vxlan->cfg.port_max, true);
         dport = info->key.tp_dst ? : vxlan->cfg.dst_port;
 
-        if (ip_tunnel_info_af(info) == AF_INET)
+        if (ip_tunnel_info_af(info) == AF_INET) {
+                if (!vxlan->vn4_sock)
+                        return -EINVAL;
                 return egress_ipv4_tun_info(dev, skb, info, sport, dport);
-        return -EINVAL;
+        } else {
+#if IS_ENABLED(CONFIG_IPV6)
+                struct dst_entry *ndst;
+
+                if (!vxlan->vn6_sock)
+                        return -EINVAL;
+                ndst = vxlan6_get_route(vxlan, skb, 0,
+                                        &info->key.u.ipv6.dst,
+                                        &info->key.u.ipv6.src);
+                if (IS_ERR(ndst))
+                        return PTR_ERR(ndst);
+                dst_release(ndst);
+
+                info->key.tp_src = sport;
+                info->key.tp_dst = dport;
+#else /* !CONFIG_IPV6 */
+                return -EPFNOSUPPORT;
+#endif
+        }
+        return 0;
 }
 
 static const struct net_device_ops vxlan_netdev_ops = {