mib: put net statistics on struct net

[linux-2.6] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index dc411335c14fdb876e0576df3919ad33e25e7615..776ed3199b52027254a8d37171fcdaa1bb152c84 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -110,12 +110,11 @@
 #include <net/ipip.h>
 #include <net/inet_common.h>
 #include <net/xfrm.h>
+#include <net/net_namespace.h>
 #ifdef CONFIG_IP_MROUTE
 #include <linux/mroute.h>
 #endif
 
-DEFINE_SNMP_STAT(struct linux_mib, net_statistics) __read_mostly;
-
 extern void ip_mc_drop_socket(struct sock *sk);
 
 /* The inetsw table contains everything that inet_create needs to
@@ -1339,23 +1338,49 @@ static struct net_protocol icmp_protocol = {
        .netns_ok =     1,
 };
 
-static int __init init_ipv4_mibs(void)
+static __net_init int ipv4_mib_init_net(struct net *net)
 {
-       if (snmp_mib_init((void **)net_statistics,
-                         sizeof(struct linux_mib)) < 0)
-               goto err_net_mib;
-       if (snmp_mib_init((void **)ip_statistics,
+       if (snmp_mib_init((void **)net->mib.tcp_statistics,
+                         sizeof(struct tcp_mib)) < 0)
+               goto err_tcp_mib;
+       if (snmp_mib_init((void **)net->mib.ip_statistics,
                          sizeof(struct ipstats_mib)) < 0)
                goto err_ip_mib;
+       if (snmp_mib_init((void **)net->mib.net_statistics,
+                         sizeof(struct linux_mib)) < 0)
+               goto err_net_mib;
+
+       tcp_mib_init(net);
+       return 0;
+
+err_net_mib:
+       snmp_mib_free((void **)net->mib.ip_statistics);
+err_ip_mib:
+       snmp_mib_free((void **)net->mib.tcp_statistics);
+err_tcp_mib:
+       return -ENOMEM;
+}
+
+static __net_exit void ipv4_mib_exit_net(struct net *net)
+{
+       snmp_mib_free((void **)net->mib.net_statistics);
+       snmp_mib_free((void **)net->mib.ip_statistics);
+       snmp_mib_free((void **)net->mib.tcp_statistics);
+}
+
+static __net_initdata struct pernet_operations ipv4_mib_ops = {
+       .init = ipv4_mib_init_net,
+       .exit = ipv4_mib_exit_net,
+};
+
+static int __init init_ipv4_mibs(void)
+{
        if (snmp_mib_init((void **)icmp_statistics,
                          sizeof(struct icmp_mib)) < 0)
                goto err_icmp_mib;
        if (snmp_mib_init((void **)icmpmsg_statistics,
                          sizeof(struct icmpmsg_mib)) < 0)
                goto err_icmpmsg_mib;
-       if (snmp_mib_init((void **)tcp_statistics,
-                         sizeof(struct tcp_mib)) < 0)
-               goto err_tcp_mib;
        if (snmp_mib_init((void **)udp_statistics,
                          sizeof(struct udp_mib)) < 0)
                goto err_udp_mib;
@@ -1363,23 +1388,20 @@ static int __init init_ipv4_mibs(void)
                          sizeof(struct udp_mib)) < 0)
                goto err_udplite_mib;
 
-       tcp_mib_init();
+       if (register_pernet_subsys(&ipv4_mib_ops))
+               goto err_net;
 
        return 0;
 
+err_net:
+       snmp_mib_free((void **)udplite_statistics);
 err_udplite_mib:
        snmp_mib_free((void **)udp_statistics);
 err_udp_mib:
-       snmp_mib_free((void **)tcp_statistics);
-err_tcp_mib:
        snmp_mib_free((void **)icmpmsg_statistics);
 err_icmpmsg_mib:
        snmp_mib_free((void **)icmp_statistics);
 err_icmp_mib:
-       snmp_mib_free((void **)ip_statistics);
-err_ip_mib:
-       snmp_mib_free((void **)net_statistics);
-err_net_mib:
        return -ENOMEM;
 }
 
@@ -1559,5 +1581,4 @@ EXPORT_SYMBOL(inet_sock_destruct);
 EXPORT_SYMBOL(inet_stream_connect);
 EXPORT_SYMBOL(inet_stream_ops);
 EXPORT_SYMBOL(inet_unregister_protosw);
-EXPORT_SYMBOL(net_statistics);
 EXPORT_SYMBOL(sysctl_ip_nonlocal_bind);