[IPV6]: Set skb->priority in ip6_output.c

Set skb->priority = sk->sk_priority as in raw.c and IPv4.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/ip6_output.c

@@ -226,6 +226,8 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
 	ipv6_addr_copy(&hdr->saddr, &fl->fl6_src);
 	ipv6_addr_copy(&hdr->daddr, first_hop);
 
+	skb->priority = sk->sk_priority;
+
 	mtu = dst_mtu(dst);
 	if ((skb->len <= mtu) || ipfragok) {
 		IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
@@ -1182,6 +1184,8 @@ int ip6_push_pending_frames(struct sock *sk)
 	ipv6_addr_copy(&hdr->saddr, &fl->fl6_src);
 	ipv6_addr_copy(&hdr->daddr, final_dst);
 
+	skb->priority = sk->sk_priority;
+
 	skb->dst = dst_clone(&rt->u.dst);
 	IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);	
 	err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, skb->dst->dev, dst_output);