diff options
| -rw-r--r-- | drivers/net/vxlan.c | 78 |
1 files changed, 34 insertions, 44 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 3f952cf..d536a93 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1980,8 +1980,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, struct dst_cache *dst_cache; struct ip_tunnel_info *info; struct vxlan_dev *vxlan = netdev_priv(dev); - struct sock *sk; - const struct iphdr *old_iph; + const struct iphdr *old_iph = ip_hdr(skb); union vxlan_addr *dst; union vxlan_addr remote_ip, local_ip; union vxlan_addr *src; @@ -1990,7 +1989,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, __be16 src_port = 0, dst_port; struct dst_entry *ndst = NULL; __be32 vni, label; - __be16 df = 0; __u8 tos, ttl; int err; u32 flags = vxlan->flags; @@ -2000,19 +1998,40 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, info = skb_tunnel_info(skb); if (rdst) { + dst = &rdst->remote_ip; + if (vxlan_addr_any(dst)) { + if (did_rsc) { + /* short-circuited back to local bridge */ + vxlan_encap_bypass(skb, vxlan, vxlan); + return; + } + goto drop; + } + dst_port = rdst->remote_port ? rdst->remote_port : vxlan->cfg.dst_port; vni = rdst->remote_vni; - dst = &rdst->remote_ip; src = &vxlan->cfg.saddr; dst_cache = &rdst->dst_cache; + md->gbp = skb->mark; + ttl = vxlan->cfg.ttl; + if (!ttl && vxlan_addr_multicast(dst)) + ttl = 1; + + tos = vxlan->cfg.tos; + if (tos == 1) + tos = ip_tunnel_get_dsfield(old_iph, skb); + + if (dst->sa.sa_family == AF_INET) + udp_sum = !(flags & VXLAN_F_UDP_ZERO_CSUM_TX); + else + udp_sum = !(flags & VXLAN_F_UDP_ZERO_CSUM6_TX); + label = vxlan->cfg.label; } else { if (!info) { WARN_ONCE(1, "%s: Missing encapsulation instructions\n", dev->name); goto drop; } - dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port; - vni = tunnel_id_to_key32(info->key.tun_id); remote_ip.sa.sa_family = ip_tunnel_info_af(info); if (remote_ip.sa.sa_family == AF_INET) { remote_ip.sin.sin_addr.s_addr = info->key.u.ipv4.dst; @@ -2022,48 +2041,24 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, local_ip.sin6.sin6_addr = info->key.u.ipv6.src; } dst = &remote_ip; + dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port; + vni = tunnel_id_to_key32(info->key.tun_id); src = &local_ip; dst_cache = &info->dst_cache; - } - - if (vxlan_addr_any(dst)) { - if (did_rsc) { - /* short-circuited back to local bridge */ - vxlan_encap_bypass(skb, vxlan, vxlan); - return; - } - goto drop; - } - - old_iph = ip_hdr(skb); - - ttl = vxlan->cfg.ttl; - if (!ttl && vxlan_addr_multicast(dst)) - ttl = 1; - - tos = vxlan->cfg.tos; - if (tos == 1) - tos = ip_tunnel_get_dsfield(old_iph, skb); - - label = vxlan->cfg.label; - src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->cfg.port_min, - vxlan->cfg.port_max, true); - - if (info) { + if (info->options_len) + md = ip_tunnel_info_opts(info); ttl = info->key.ttl; tos = info->key.tos; label = info->key.label; udp_sum = !!(info->key.tun_flags & TUNNEL_CSUM); - - if (info->options_len) - md = ip_tunnel_info_opts(info); - } else { - md->gbp = skb->mark; } + src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->cfg.port_min, + vxlan->cfg.port_max, true); if (dst->sa.sa_family == AF_INET) { struct vxlan_sock *sock4 = rcu_dereference(vxlan->vn4_sock); struct rtable *rt; + __be16 df = 0; rt = vxlan_get_route(vxlan, dev, sock4, skb, rdst ? rdst->remote_ifindex : 0, tos, @@ -2073,7 +2068,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, if (IS_ERR(rt)) goto tx_error; - sk = sock4->sock->sk; /* Bypass encapsulation if the destination is local */ if (!info) { err = encap_bypass_if_local(skb, dev, vxlan, dst, @@ -2081,7 +2075,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, rt->rt_flags); if (err) return; - udp_sum = !(flags & VXLAN_F_UDP_ZERO_CSUM_TX); } else if (info->key.tun_flags & TUNNEL_DONT_FRAGMENT) { df = htons(IP_DF); } @@ -2094,7 +2087,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, if (err < 0) goto tx_error; - udp_tunnel_xmit_skb(rt, sk, skb, src->sin.sin_addr.s_addr, + udp_tunnel_xmit_skb(rt, sock4->sock->sk, skb, src->sin.sin_addr.s_addr, dst->sin.sin_addr.s_addr, tos, ttl, df, src_port, dst_port, xnet, !udp_sum); #if IS_ENABLED(CONFIG_IPV6) @@ -2110,7 +2103,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, ndst = NULL; goto tx_error; } - sk = sock6->sock->sk; if (!info) { u32 rt6i_flags = ((struct rt6_info *)ndst)->rt6i_flags; @@ -2120,7 +2112,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, rt6i_flags); if (err) return; - udp_sum = !(flags & VXLAN_F_UDP_ZERO_CSUM6_TX); } tos = ip_tunnel_ecn_encap(tos, old_iph, skb); @@ -2131,13 +2122,12 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, if (err < 0) goto tx_error; - udp_tunnel6_xmit_skb(ndst, sk, skb, dev, + udp_tunnel6_xmit_skb(ndst, sock6->sock->sk, skb, dev, &src->sin6.sin6_addr, &dst->sin6.sin6_addr, tos, ttl, label, src_port, dst_port, !udp_sum); #endif } - return; drop: |
