commit f5fca6086511294653a9e821f8e22f041415ba7b
author David S. Miller <davem@davemloft.net> Sun May 08 17:24:10 2011 -0700
committer David S. Miller <davem@davemloft.net> Sun May 08 21:24:07 2011 -0700
tree 1ab025012bf44402e7f816428461d8def54016c1
parent 77968b78242ee25e2a4d759f0fca8dd52df6d479

ipv4: Pass flow key down into ip_append_*().

This way rt->rt_dst accesses are unnecessary.

Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/ip_output.c

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index dca637b..cd89d22 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -776,7 +776,9 @@
 				       (length - transhdrlen));
 }
 
-static int __ip_append_data(struct sock *sk, struct sk_buff_head *queue,
+static int __ip_append_data(struct sock *sk,
+			    struct flowi4 *fl4,
+			    struct sk_buff_head *queue,
 			    struct inet_cork *cork,
 			    int getfrag(void *from, char *to, int offset,
 					int len, int odd, struct sk_buff *skb),
@@ -808,7 +810,7 @@
 	maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
 
 	if (cork->length + length > 0xFFFF - fragheaderlen) {
-		ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport,
+		ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
 			       mtu-exthdrlen);
 		return -EMSGSIZE;
 	}
@@ -1083,7 +1085,7 @@
  *
  *	LATER: length must be adjusted by pad at tail, when it is required.
  */
-int ip_append_data(struct sock *sk,
+int ip_append_data(struct sock *sk, struct flowi4 *fl4,
 		   int getfrag(void *from, char *to, int offset, int len,
 			       int odd, struct sk_buff *skb),
 		   void *from, int length, int transhdrlen,
@@ -1104,11 +1106,11 @@
 		transhdrlen = 0;
 	}
 
-	return __ip_append_data(sk, &sk->sk_write_queue, &inet->cork.base, getfrag,
+	return __ip_append_data(sk, fl4, &sk->sk_write_queue, &inet->cork.base, getfrag,
 				from, length, transhdrlen, flags);
 }
 
-ssize_t	ip_append_page(struct sock *sk, struct page *page,
+ssize_t	ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
 		       int offset, size_t size, int flags)
 {
 	struct inet_sock *inet = inet_sk(sk);
@@ -1146,7 +1148,7 @@
 	maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
 
 	if (cork->length + size > 0xFFFF - fragheaderlen) {
-		ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport, mtu);
+		ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, mtu);
 		return -EMSGSIZE;
 	}
 
@@ -1427,7 +1429,7 @@
 	if (err)
 		return ERR_PTR(err);
 
-	err = __ip_append_data(sk, &queue, &cork, getfrag,
+	err = __ip_append_data(sk, fl4, &queue, &cork, getfrag,
 			       from, length, transhdrlen, flags);
 	if (err) {
 		__ip_flush_pending_frames(sk, &queue, &cork);
@@ -1503,7 +1505,7 @@
 	sk->sk_priority = skb->priority;
 	sk->sk_protocol = ip_hdr(skb)->protocol;
 	sk->sk_bound_dev_if = arg->bound_dev_if;
-	ip_append_data(sk, ip_reply_glue_bits, arg->iov->iov_base, len, 0,
+	ip_append_data(sk, &fl4, ip_reply_glue_bits, arg->iov->iov_base, len, 0,
 		       &ipc, &rt, MSG_DONTWAIT);
 	if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) {
 		if (arg->csumoffset >= 0)