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, 3 insertions, 3 deletions

diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index da04f459337e..a65e929ce76c 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -85,7 +85,7 @@ static void dn_nsp_send(struct sk_buff *skb)
         dst = sk_dst_check(sk, 0);
         if (dst) {
 try_again:
-                skb->dst = dst;
+                skb_dst_set(skb, dst);
                 dst_output(skb);
                 return;
         }
@@ -582,7 +582,7 @@ static __inline__ void dn_nsp_do_disc(struct sock *sk, unsigned char msgflg,
          * to be able to send disc packets out which have no socket
          * associations.
          */
-        skb->dst = dst_clone(dst);
+        skb_dst_set(skb, dst_clone(dst));
         dst_output(skb);
 }
 
@@ -611,7 +611,7 @@ void dn_nsp_return_disc(struct sk_buff *skb, unsigned char msgflg,
         int ddl = 0;
         gfp_t gfp = GFP_ATOMIC;
 
-        dn_nsp_do_disc(NULL, msgflg, reason, gfp, skb->dst, ddl,
+        dn_nsp_do_disc(NULL, msgflg, reason, gfp, skb_dst(skb), ddl,
                         NULL, cb->src_port, cb->dst_port);
 }