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>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 5ee5a031bc93..c4f4eef032a3 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -30,7 +30,7 @@ EXPORT_SYMBOL(xfrm6_find_1stfragopt);
 static int xfrm6_tunnel_check_size(struct sk_buff *skb)
 {
         int mtu, ret = 0;
-        struct dst_entry *dst = skb->dst;
+        struct dst_entry *dst = skb_dst(skb);
 
         mtu = dst_mtu(dst);
         if (mtu < IPV6_MIN_MTU)
@@ -90,6 +90,6 @@ static int xfrm6_output_finish(struct sk_buff *skb)
 
 int xfrm6_output(struct sk_buff *skb)
 {
-        return NF_HOOK(PF_INET6, NF_INET_POST_ROUTING, skb, NULL, skb->dst->dev,
+        return NF_HOOK(PF_INET6, NF_INET_POST_ROUTING, skb, NULL, skb_dst(skb)->dev,
                        xfrm6_output_finish);
 }