inetpeer: add namespace support for inetpeer

now inetpeer doesn't support namespace,the information will
be leaking across namespace.

this patch move the global vars v4_peers and v6_peers to
netns_ipv4 and netns_ipv6 as a field peers.

add struct pernet_operations inetpeer_ops to initial pernet
inetpeer data.

and change family_to_base and inet_getpeer to support namespace.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 4 deletions

diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 2040bff945d4..fef9dfab5d45 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -75,7 +75,9 @@ static inline bool inet_metrics_new(const struct inet_peer *p)
 }
 
 /* can be called with or without local BH being disabled */
-struct inet_peer        *inet_getpeer(const struct inetpeer_addr *daddr, int create);
+struct inet_peer *inet_getpeer(struct net *net,
+                               const struct inetpeer_addr *daddr,
+                               int create);
 
 static inline struct inet_peer *inet_getpeer_v4(__be32 v4daddr, int create)
 {
@@ -83,7 +85,7 @@ static inline struct inet_peer *inet_getpeer_v4(__be32 v4daddr, int create)
 
         daddr.addr.a4 = v4daddr;
         daddr.family = AF_INET;
-        return inet_getpeer(&daddr, create);
+        return inet_getpeer(&init_net, &daddr, create);
 }
 
 static inline struct inet_peer *inet_getpeer_v6(const struct in6_addr *v6daddr, int create)
@@ -92,14 +94,14 @@ static inline struct inet_peer *inet_getpeer_v6(const struct in6_addr *v6daddr,
 
         *(struct in6_addr *)daddr.addr.a6 = *v6daddr;
         daddr.family = AF_INET6;
-        return inet_getpeer(&daddr, create);
+        return inet_getpeer(&init_net, &daddr, create);
 }
 
 /* can be called from BH context or outside */
 extern void inet_putpeer(struct inet_peer *p);
 extern bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout);
 
-extern void inetpeer_invalidate_tree(int family);
+extern void inetpeer_invalidate_tree(struct net *net, int family);
 
 /*
  * temporary check to make sure we dont access rid, ip_id_count, tcp_ts,