diff options
| author | wenxu <wenxu@ucloud.cn> | 2019-01-19 06:11:25 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-01-25 02:54:12 +0100 |
| commit | d71b57532d70c03f4671dd04e84157ac6bf021b0 (patch) | |
| tree | ada00d0ab5a5a040df915f8786d520d07cec01f1 /net | |
| parent | ax25: fix possible use-after-free (diff) | |
| download | linux-d71b57532d70c03f4671dd04e84157ac6bf021b0.tar.xz linux-d71b57532d70c03f4671dd04e84157ac6bf021b0.zip | |
ip_tunnel: Make none-tunnel-dst tunnel port work with lwtunnel
ip l add dev tun type gretap key 1000
ip a a dev tun 10.0.0.1/24
Packets with tun-id 1000 can be recived by tun dev. But packet can't
be sent through dev tun for non-tunnel-dst
With this patch: tunnel-dst can be get through lwtunnel like beflow:
ip r a 10.0.0.7 encap ip dst 172.168.0.11 dev tun
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/ip_tunnel.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index c4f5602308ed..054d01c16dc6 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -644,13 +644,19 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, dst = tnl_params->daddr; if (dst == 0) { /* NBMA tunnel */ + struct ip_tunnel_info *tun_info; if (!skb_dst(skb)) { dev->stats.tx_fifo_errors++; goto tx_error; } - if (skb->protocol == htons(ETH_P_IP)) { + tun_info = skb_tunnel_info(skb); + if (tun_info && (tun_info->mode & IP_TUNNEL_INFO_TX) && + ip_tunnel_info_af(tun_info) == AF_INET && + tun_info->key.u.ipv4.dst) + dst = tun_info->key.u.ipv4.dst; + else if (skb->protocol == htons(ETH_P_IP)) { rt = skb_rtable(skb); dst = rt_nexthop(rt, inner_iph->daddr); } |