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authorDavid S. Miller <davem@davemloft.net>2010-11-30 12:27:11 -0800
committerDavid S. Miller <davem@davemloft.net>2010-11-30 12:27:11 -0800
commitb3419363808f2481b24a817f491878e1795db4c7 (patch)
tree76cfa3c55d6798a9bf25d200778dc212841f6cb0 /net/ipv6/route.c
parent672f007d65f50468a4a1e55825fe58e5b035324d (diff)
ipv6: Add infrastructure to bind inet_peer objects to routes.
They are only allowed on cached ipv6 routes. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a0c4ad109c6..026caef0326 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -188,11 +188,29 @@ static void ip6_dst_destroy(struct dst_entry *dst)
{
struct rt6_info *rt = (struct rt6_info *)dst;
struct inet6_dev *idev = rt->rt6i_idev;
+ struct inet_peer *peer = rt->rt6i_peer;
if (idev != NULL) {
rt->rt6i_idev = NULL;
in6_dev_put(idev);
}
+ if (peer) {
+ BUG_ON(!(rt->rt6i_flags & RTF_CACHE));
+ rt->rt6i_peer = NULL;
+ inet_putpeer(peer);
+ }
+}
+
+void rt6_bind_peer(struct rt6_info *rt, int create)
+{
+ struct inet_peer *peer;
+
+ if (WARN_ON(!(rt->rt6i_flags & RTF_CACHE)))
+ return;
+
+ peer = inet_getpeer_v6(&rt->rt6i_dst.addr, create);
+ if (peer && cmpxchg(&rt->rt6i_peer, NULL, peer) != NULL)
+ inet_putpeer(peer);
}
static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,