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net: Add ->neigh_lookup() operation to dst_ops

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In the future dst entries will be neigh-less.  In that environment we
need to have an easy transition point for current users of
dst->neighbour outside of the packet output fast path.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-07-18 00:40:17 -07:00
parent 69cce1d140
commit d3aaeb38c4
8 changed files with 52 additions and 16 deletions
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7
net/xfrm/xfrm_policy.c
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@@ -2385,6 +2385,11 @@ static unsigned int xfrm_default_mtu(const struct dst_entry *dst)
return dst_mtu(dst->path);
}
static struct neighbour *xfrm_neigh_lookup(const struct dst_entry *dst, const void *daddr)
{
return dst_neigh_lookup(dst->path, daddr);
}
int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
{
struct net *net;
@@ -2410,6 +2415,8 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
dst_ops->negative_advice = xfrm_negative_advice;
if (likely(dst_ops->link_failure == NULL))
dst_ops->link_failure = xfrm_link_failure;
if (likely(dst_ops->neigh_lookup == NULL))
dst_ops->neigh_lookup = xfrm_neigh_lookup;
if (likely(afinfo->garbage_collect == NULL))
afinfo->garbage_collect = __xfrm_garbage_collect;
xfrm_policy_afinfo[afinfo->family] = afinfo;