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, 1 insertions, 1 deletions

diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 7985346653bd..1f1b82475eaf 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -573,7 +573,7 @@ int ip_defrag(struct sk_buff *skb, u32 user)
         struct ipq *qp;
         struct net *net;
 
-        net = skb->dev ? dev_net(skb->dev) : dev_net(skb->dst->dev);
+        net = skb->dev ? dev_net(skb->dev) : dev_net(skb_dst(skb)->dev);
         IP_INC_STATS_BH(net, IPSTATS_MIB_REASMREQDS);
 
         /* Start by cleaning up the memory. */