ipv6: Merge ip6_local_out and ip6_local_out_sk

Stop hidding the sk parameter with an inline helper function and make
all of the callers pass it, so that it is clear what the function is
doing.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ipvlan/ipvlan_core.c

@@ -401,7 +401,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
 	}
 	skb_dst_drop(skb);
 	skb_dst_set(skb, dst);
-	err = ip6_local_out(skb);
+	err = ip6_local_out(skb->sk, skb);
 	if (unlikely(net_xmit_eval(err)))
 		dev->stats.tx_errors++;
 	else

include/net/ip6_tunnel.h

@@ -87,7 +87,7 @@ static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
 	int pkt_len, err;
 
 	pkt_len = skb->len - skb_inner_network_offset(skb);
-	err = ip6_local_out_sk(sk, skb);
+	err = ip6_local_out(sk, skb);
 
 	if (net_xmit_eval(err) == 0) {
 		struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);

include/net/ipv6.h

@@ -866,8 +866,7 @@ int ip6_input(struct sk_buff *skb);
 int ip6_mc_input(struct sk_buff *skb);
 
 int __ip6_local_out(struct sock *sk, struct sk_buff *skb);
-int ip6_local_out_sk(struct sock *sk, struct sk_buff *skb);
-int ip6_local_out(struct sk_buff *skb);
+int ip6_local_out(struct sock *sk, struct sk_buff *skb);
 
 /*
  *	Extension header (options) processing

net/ipv6/ip6_output.c

@@ -1692,7 +1692,7 @@ int ip6_send_skb(struct sk_buff *skb)
 	struct rt6_info *rt = (struct rt6_info *)skb_dst(skb);
 	int err;
 
-	err = ip6_local_out(skb);
+	err = ip6_local_out(skb->sk, skb);
 	if (err) {
 		if (err > 0)
 			err = net_xmit_errno(err);

net/ipv6/netfilter/ip6t_SYNPROXY.c

@@ -76,7 +76,7 @@ synproxy_send_tcp(const struct synproxy_net *snet,
 		nf_conntrack_get(nfct);
 	}
 
-	ip6_local_out(nskb);
+	ip6_local_out(nskb->sk, nskb);
 	return;
 
 free_nskb:

net/ipv6/netfilter/nf_dup_ipv6.c

@@ -68,7 +68,7 @@ void nf_dup_ipv6(struct net *net, struct sk_buff *skb, unsigned int hooknum,
 	}
 	if (nf_dup_ipv6_route(net, skb, gw, oif)) {
 		__this_cpu_write(nf_skb_duplicated, true);
-		ip6_local_out(skb);
+		ip6_local_out(skb->sk, skb);
 		__this_cpu_write(nf_skb_duplicated, false);
 	} else {
 		kfree_skb(skb);

net/ipv6/netfilter/nf_reject_ipv6.c

@@ -206,7 +206,7 @@ void nf_send_reset6(struct net *net, struct sk_buff *oldskb, int hook)
 		dev_queue_xmit(nskb);
 	} else
 #endif
-		ip6_local_out(nskb);
+		ip6_local_out(nskb->sk, nskb);
 }
 EXPORT_SYMBOL_GPL(nf_send_reset6);
 

net/ipv6/output_core.c

@@ -155,7 +155,7 @@ int __ip6_local_out(struct sock *sk, struct sk_buff *skb)
 }
 EXPORT_SYMBOL_GPL(__ip6_local_out);
 
-int ip6_local_out_sk(struct sock *sk, struct sk_buff *skb)
+int ip6_local_out(struct sock *sk, struct sk_buff *skb)
 {
 	struct net *net = dev_net(skb_dst(skb)->dev);
 	int err;
@@ -166,10 +166,4 @@ int ip6_local_out_sk(struct sock *sk, struct sk_buff *skb)
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(ip6_local_out_sk);
-
-int ip6_local_out(struct sk_buff *skb)
-{
-	return ip6_local_out_sk(skb->sk, skb);
-}
 EXPORT_SYMBOL_GPL(ip6_local_out);

net/netfilter/ipvs/ip_vs_xmit.c

@@ -1141,7 +1141,7 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
 
 	ret = ip_vs_tunnel_xmit_prepare(skb, cp);
 	if (ret == NF_ACCEPT)
-		ip6_local_out(skb);
+		ip6_local_out(skb->sk, skb);
 	else if (ret == NF_DROP)
 		kfree_skb(skb);
 	rcu_read_unlock();