commit adf30907d63893e4208dfe3f5c88ae12bc2f25d5
author Eric Dumazet <eric.dumazet@gmail.com> Tue Jun 02 05:19:30 2009 +0000
committer David S. Miller <davem@davemloft.net> Wed Jun 03 02:51:04 2009 -0700
tree 0f07542bb95de2ad537540868aba6cf87a86e17d
parent 511c3f92ad5b6d9f8f6464be1b4f85f0422be91a

net: skb->dst accessors

Define three accessors to get/set dst attached to a skb

struct dst_entry *skb_dst(const struct sk_buff *skb)

void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;

Delete skb->dst field

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/mcast.c

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 4b48819..4b264ed 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1448,6 +1448,7 @@
 	struct net *net = dev_net(skb->dev);
 	int err;
 	struct flowi fl;
+	struct dst_entry *dst;
 
 	IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
 
@@ -1459,9 +1460,9 @@
 		IPPROTO_ICMPV6, csum_partial(skb_transport_header(skb),
 					     mldlen, 0));
 
-	skb->dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
+	dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
 
-	if (!skb->dst) {
+	if (!dst) {
 		err = -ENOMEM;
 		goto err_out;
 	}
@@ -1470,7 +1471,8 @@
 			 &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
 			 skb->dev->ifindex);
 
-	err = xfrm_lookup(net, &skb->dst, &fl, NULL, 0);
+	err = xfrm_lookup(net, &dst, &fl, NULL, 0);
+	skb_dst_set(skb, dst);
 	if (err)
 		goto err_out;
 
@@ -1775,6 +1777,7 @@
 		     IPV6_TLV_ROUTERALERT, 2, 0, 0,
 		     IPV6_TLV_PADN, 0 };
 	struct flowi fl;
+	struct dst_entry *dst;
 
 	if (type == ICMPV6_MGM_REDUCTION)
 		snd_addr = &in6addr_linklocal_allrouters;
@@ -1828,8 +1831,8 @@
 
 	idev = in6_dev_get(skb->dev);
 
-	skb->dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
-	if (!skb->dst) {
+	dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
+	if (!dst) {
 		err = -ENOMEM;
 		goto err_out;
 	}
@@ -1838,11 +1841,11 @@
 			 &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
 			 skb->dev->ifindex);
 
-	err = xfrm_lookup(net, &skb->dst, &fl, NULL, 0);
+	err = xfrm_lookup(net, &dst, &fl, NULL, 0);
 	if (err)
 		goto err_out;
 
-
+	skb_dst_set(skb, dst);
 	err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
 		      dst_output);
 out: