[IPV6]: Fix tclass setting for raw sockets.

np->cork.tclass is used only in cork'ed context.
Otherwise, np->tclass should be used.

Bug#7096 reported by Remi Denis-Courmont <rdenis@simphalempin.com>.
Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/icmp.c

@@ -401,7 +401,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
 	if (hlimit < 0)
 		hlimit = ipv6_get_hoplimit(dst->dev);
 
-	tclass = np->cork.tclass;
+	tclass = np->tclass;
 	if (tclass < 0)
 		tclass = 0;
 
@@ -497,7 +497,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
 	if (hlimit < 0)
 		hlimit = ipv6_get_hoplimit(dst->dev);
 
-	tclass = np->cork.tclass;
+	tclass = np->tclass;
 	if (tclass < 0)
 		tclass = 0;
 

net/ipv6/raw.c

@@ -781,7 +781,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
 	}
 
 	if (tclass < 0) {
-		tclass = np->cork.tclass;
+		tclass = np->tclass;
 		if (tclass < 0)
 			tclass = 0;
 	}