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>
diff --git a/include/net/dst.h b/include/net/dst.h
index 6be3b08..7fc409c 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -195,6 +195,12 @@
}
extern void dst_release(struct dst_entry *dst);
+static inline void skb_dst_drop(struct sk_buff *skb)
+{
+ if (skb->_skb_dst)
+ dst_release(skb_dst(skb));
+ skb->_skb_dst = 0UL;
+}
/* Children define the path of the packet through the
* Linux networking. Thus, destinations are stackable.
@@ -246,7 +252,7 @@
static inline void dst_link_failure(struct sk_buff *skb)
{
- struct dst_entry * dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
if (dst && dst->ops && dst->ops->link_failure)
dst->ops->link_failure(skb);
}
@@ -265,13 +271,13 @@
/* Output packet to network from transport. */
static inline int dst_output(struct sk_buff *skb)
{
- return skb->dst->output(skb);
+ return skb_dst(skb)->output(skb);
}
/* Input packet from network to transport. */
static inline int dst_input(struct sk_buff *skb)
{
- return skb->dst->input(skb);
+ return skb_dst(skb)->input(skb);
}
static inline struct dst_entry *dst_check(struct dst_entry *dst, u32 cookie)