ipvs: Maintain all DSCP and ECN bits for ipv6 tun forwarding

Previously, only the four high bits of the tclass were maintained in the
ipv6 case.  This matches the behavior of ipv4, though whether or not we
should reflect ECN bits may be up for debate.

Signed-off-by: Alex Gartrell <agartrell@fb.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>

diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 73ba1cc7a88dd6a1126a0aaae3525ee2ce1f0fda..6f70bdd3a90ad85c72cb100de997d2f5b5bc40a1 100644 (file)
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -967,8 +967,8 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
        iph->nexthdr            =       IPPROTO_IPV6;
        iph->payload_len        =       old_iph->payload_len;
        be16_add_cpu(&iph->payload_len, sizeof(*old_iph));
-       iph->priority           =       old_iph->priority;
        memset(&iph->flow_lbl, 0, sizeof(iph->flow_lbl));
+       ipv6_change_dsfield(iph, 0, ipv6_get_dsfield(old_iph));
        iph->daddr = cp->daddr.in6;
        iph->saddr = saddr;
        iph->hop_limit          =       old_iph->hop_limit;