Use sk_mark for routing lookup in more places

Here is a followup on this area, thanks.

[RFC] af_packet: fill skb->mark at xmit

skb->mark may be used by classifiers, so fill it in case user
set a SO_MARK option on socket.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/packet/af_packet.c

@@ -490,6 +490,7 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
 	skb->protocol = proto;
 	skb->dev = dev;
 	skb->priority = sk->sk_priority;
+	skb->mark = sk->sk_mark;
 	if (err)
 		goto out_free;
 
@@ -884,6 +885,7 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
 	skb->protocol = proto;
 	skb->dev = dev;
 	skb->priority = po->sk.sk_priority;
+	skb->mark = po->sk.sk_mark;
 	skb_shinfo(skb)->destructor_arg = ph.raw;
 
 	switch (po->tp_version) {
@@ -1153,6 +1155,7 @@ static int packet_snd(struct socket *sock,
 	skb->protocol = proto;
 	skb->dev = dev;
 	skb->priority = sk->sk_priority;
+	skb->mark = sk->sk_mark;
 
 	/*
 	 *	Now send it