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ip6_tunnel: fix traffic class routing for tunnels 

ip6_route_output() requires that the flowlabel contains the traffic
class for policy routing.

Commit 0e9a709560 ("ip6_tunnel, ip6_gre: fix setting of DSCP on
encapsulated packets") removed the code which previously added the
traffic class to the flowlabel.

The traffic class is added here because only route lookup needs the
flowlabel to contain the traffic class.

Fixes: 0e9a709560 ("ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets")
Signed-off-by: Liam McBirnie <liam.mcbirnie@boeing.com>
Acked-by: Peter Dawson <peter.a.dawson@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Liam McBirnie 2017-06-01 15:36:01 +10:00 committed by David S. Miller
parent 246096690b
commit 5f733ee68f
1 changed files with 3 additions and 0 deletions
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3
net/ipv6/ip6_tunnel.c
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@ -1095,6 +1095,9 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
if (!dst) {
route_lookup:
/* add dsfield to flowlabel for route lookup */
fl6->flowlabel = ip6_make_flowinfo(dsfield, fl6->flowlabel);
dst = ip6_route_output(net, NULL, fl6);
if (dst->error)