net: Make ip_ra_chain per struct net
This is optimization, which makes ip_call_ra_chain()
iterate less sockets to find the sockets it's looking for.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip.h b/include/net/ip.h
index fe63ba9..d53b5a9 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -91,6 +91,17 @@ static inline int inet_sdif(struct sk_buff *skb)
return 0;
}
+/* Special input handler for packets caught by router alert option.
+ They are selected only by protocol field, and then processed likely
+ local ones; but only if someone wants them! Otherwise, router
+ not running rsvpd will kill RSVP.
+
+ It is user level problem, what it will make with them.
+ I have no idea, how it will masquearde or NAT them (it is joke, joke :-)),
+ but receiver should be enough clever f.e. to forward mtrace requests,
+ sent to multicast group to reach destination designated router.
+ */
+
struct ip_ra_chain {
struct ip_ra_chain __rcu *next;
struct sock *sk;
@@ -101,8 +112,6 @@ struct ip_ra_chain {
struct rcu_head rcu;
};
-extern struct ip_ra_chain __rcu *ip_ra_chain;
-
/* IP flags. */
#define IP_CE 0x8000 /* Flag: "Congestion" */
#define IP_DF 0x4000 /* Flag: "Don't Fragment" */