[NETNS][DCCPV4]: Move the dccp_v4_ctl_sk on the struct net.

And replace all its usage with init_net's socket.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 13 insertions, 10 deletions

diff --git a/include/net/netns/dccp.h b/include/net/netns/dccp.h
index 056e6adc70b6..e4f16faa898a 100644
--- a/include/net/netns/dccp.h
+++ b/include/net/netns/dccp.h
@@ -1,7 +1,10 @@
 #ifndef __NETNS_DCCP_H__
 #define __NETNS_DCCP_H__
 
+struct sock;
+
 struct netns_dccp {
+        struct sock *v4_ctl_sk;
 };
 
 #endif
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 10bba039c4b8..85931dce744c 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -32,11 +32,10 @@
 #include "feat.h"
 
 /*
- * This is the global socket data structure used for responding to
+ * The dccp_ctl_sk is the global socket data structure used for responding to
  * the Out-of-the-blue (OOTB) packets. A control sock will be created
  * for this socket at the initialization time.
  */
-static struct sock *dccp_v4_ctl_sk;
 
 int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
@@ -506,6 +505,7 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
         const struct iphdr *rxiph;
         struct sk_buff *skb;
         struct dst_entry *dst;
+        struct sock *ctl_sk = init_net.dccp.v4_ctl_sk;
 
         /* Never send a reset in response to a reset. */
         if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)
@@ -514,11 +514,11 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
         if (rxskb->rtable->rt_type != RTN_LOCAL)
                 return;
 
-        dst = dccp_v4_route_skb(dccp_v4_ctl_sk, rxskb);
+        dst = dccp_v4_route_skb(ctl_sk, rxskb);
         if (dst == NULL)
                 return;
 
-        skb = dccp_ctl_make_reset(dccp_v4_ctl_sk, rxskb);
+        skb = dccp_ctl_make_reset(ctl_sk, rxskb);
         if (skb == NULL)
                 goto out;
 
@@ -527,10 +527,10 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
                                                                  rxiph->daddr);
         skb->dst = dst_clone(dst);
 
-        bh_lock_sock(dccp_v4_ctl_sk);
-        err = ip_build_and_send_pkt(skb, dccp_v4_ctl_sk,
+        bh_lock_sock(ctl_sk);
+        err = ip_build_and_send_pkt(skb, ctl_sk,
                                     rxiph->daddr, rxiph->saddr, NULL);
-        bh_unlock_sock(dccp_v4_ctl_sk);
+        bh_unlock_sock(ctl_sk);
 
         if (net_xmit_eval(err) == 0) {
                 DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
@@ -1016,7 +1016,7 @@ static int __init dccp_v4_init(void)
 
         inet_register_protosw(&dccp_v4_protosw);
 
-        err = inet_ctl_sock_create(&dccp_v4_ctl_sk, PF_INET,
+        err = inet_ctl_sock_create(&init_net.dccp.v4_ctl_sk, PF_INET,
                                    SOCK_DCCP, IPPROTO_DCCP, &init_net);
         if (err)
                 goto out_unregister_protosw;
@@ -1027,7 +1027,7 @@ static int __init dccp_v4_init(void)
 out:
         return err;
 out_destroy_ctl_sock:
-        inet_ctl_sock_destroy(dccp_v4_ctl_sk);
+        inet_ctl_sock_destroy(init_net.dccp.v4_ctl_sk);
 out_unregister_protosw:
         inet_unregister_protosw(&dccp_v4_protosw);
         inet_del_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
@@ -1039,7 +1039,7 @@ out_proto_unregister:
 static void __exit dccp_v4_exit(void)
 {
         unregister_pernet_subsys(&dccp_v4_ops);
-        inet_ctl_sock_destroy(dccp_v4_ctl_sk);
+        inet_ctl_sock_destroy(init_net.dccp.v4_ctl_sk);
         inet_unregister_protosw(&dccp_v4_protosw);
         inet_del_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
         proto_unregister(&dccp_v4_prot);