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net: Add optional SKB arg to dst_ops->neigh_lookup().

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Causes the handler to use the daddr in the ipv4/ipv6 header when
the route gateway is unspecified (local subnet).

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2012-07-02 21:52:24 -07:00
parent 5110effee8
commit f894cbf847
7 changed files with 43 additions and 15 deletions
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8
include/net/dst.h
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@@ -420,7 +420,13 @@ static inline int dst_neigh_output(struct dst_entry *dst, struct neighbour *n,
static inline struct neighbour *dst_neigh_lookup(const struct dst_entry *dst, const void *daddr)
{
return dst->ops->neigh_lookup(dst, daddr);
return dst->ops->neigh_lookup(dst, NULL, daddr);
}
static inline struct neighbour *dst_neigh_lookup_skb(const struct dst_entry *dst,
struct sk_buff *skb)
{
return dst->ops->neigh_lookup(dst, skb, NULL);
}
static inline void dst_link_failure(struct sk_buff *skb)

4
include/net/dst_ops.h
View File

@@ -26,7 +26,9 @@ struct dst_ops {
void (*link_failure)(struct sk_buff *);
void (*update_pmtu)(struct dst_entry *dst, u32 mtu);
int (*local_out)(struct sk_buff *skb);
struct neighbour * (*neigh_lookup)(const struct dst_entry *dst, const void *daddr);
struct neighbour * (*neigh_lookup)(const struct dst_entry *dst,
struct sk_buff *skb,
const void *daddr);
struct kmem_cache *kmem_cachep;