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, 7 insertions, 7 deletions

diff --git a/net/atm/clip.c b/net/atm/clip.c
index fb7623c080f8..e65a3b1477f8 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -369,16 +369,16 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
         unsigned long flags;
 
         pr_debug("clip_start_xmit (skb %p)\n", skb);
-        if (!skb->dst) {
-                printk(KERN_ERR "clip_start_xmit: skb->dst == NULL\n");
+        if (!skb_dst(skb)) {
+                printk(KERN_ERR "clip_start_xmit: skb_dst(skb) == NULL\n");
                 dev_kfree_skb(skb);
                 dev->stats.tx_dropped++;
                 return 0;
         }
-        if (!skb->dst->neighbour) {
+        if (!skb_dst(skb)->neighbour) {
 #if 0
-                skb->dst->neighbour = clip_find_neighbour(skb->dst, 1);
-                if (!skb->dst->neighbour) {
+                skb_dst(skb)->neighbour = clip_find_neighbour(skb_dst(skb), 1);
+                if (!skb_dst(skb)->neighbour) {
                         dev_kfree_skb(skb);     /* lost that one */
                         dev->stats.tx_dropped++;
                         return 0;
@@ -389,7 +389,7 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 dev->stats.tx_dropped++;
                 return 0;
         }
-        entry = NEIGH2ENTRY(skb->dst->neighbour);
+        entry = NEIGH2ENTRY(skb_dst(skb)->neighbour);
         if (!entry->vccs) {
                 if (time_after(jiffies, entry->expires)) {
                         /* should be resolved */
@@ -406,7 +406,7 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
         }
         pr_debug("neigh %p, vccs %p\n", entry, entry->vccs);
         ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
-        pr_debug("using neighbour %p, vcc %p\n", skb->dst->neighbour, vcc);
+        pr_debug("using neighbour %p, vcc %p\n", skb_dst(skb)->neighbour, vcc);
         if (entry->vccs->encap) {
                 void *here;