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ip6_tunnel: fix setting hop_limit value for ipv6 tunnel

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Similar to vxlan/geneve tunnel, if hop_limit is zero, it should fall
back to ip6_dst_hoplimt().

Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haishuang Yan 2017-09-07 14:08:35 +08:00 committed by David S. Miller
parent 0f693f1995
commit 18e1173d5f
1 changed files with 1 additions and 0 deletions
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1
net/ipv6/ip6_tunnel.c
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@ -1184,6 +1184,7 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
init_tel_txopt(&opt, encap_limit);
ipv6_push_frag_opts(skb, &opt.ops, &proto);
}
hop_limit = hop_limit ? : ip6_dst_hoplimit(dst);
/* Calculate max headroom for all the headers and adjust
* needed_headroom if necessary.