mib: put net statistics on struct net

Similar to ip and tcp ones :)

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 13 insertions, 15 deletions

diff --git a/include/net/ip.h b/include/net/ip.h
index ff2535ada02e..b5862b975207 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -159,12 +159,11 @@ extern struct ipv4_config ipv4_config;
 #define IP_INC_STATS(net, field)        SNMP_INC_STATS((net)->mib.ip_statistics, field)
 #define IP_INC_STATS_BH(net, field)     SNMP_INC_STATS_BH((net)->mib.ip_statistics, field)
 #define IP_ADD_STATS_BH(net, field, val) SNMP_ADD_STATS_BH((net)->mib.ip_statistics, field, val)
-DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
-#define NET_INC_STATS(net, field)       do { (void)net; SNMP_INC_STATS(net_statistics, field); } while (0)
-#define NET_INC_STATS_BH(net, field)    do { (void)net; SNMP_INC_STATS_BH(net_statistics, field); } while (0)
-#define NET_INC_STATS_USER(net, field)  do { (void)net; SNMP_INC_STATS_USER(net_statistics, field); } while (0)
-#define NET_ADD_STATS_BH(net, field, adnd) do { (void)net; SNMP_ADD_STATS_BH(net_statistics, field, adnd); } while (0)
-#define NET_ADD_STATS_USER(net, field, adnd) do { (void)net; SNMP_ADD_STATS_USER(net_statistics, field, adnd); } while (0)
+#define NET_INC_STATS(net, field)       SNMP_INC_STATS((net)->mib.net_statistics, field)
+#define NET_INC_STATS_BH(net, field)    SNMP_INC_STATS_BH((net)->mib.net_statistics, field)
+#define NET_INC_STATS_USER(net, field)  SNMP_INC_STATS_USER((net)->mib.net_statistics, field)
+#define NET_ADD_STATS_BH(net, field, adnd) SNMP_ADD_STATS_BH((net)->mib.net_statistics, field, adnd)
+#define NET_ADD_STATS_USER(net, field, adnd) SNMP_ADD_STATS_USER((net)->mib.net_statistics, field, adnd)
 
 extern unsigned long snmp_fold_field(void *mib[], int offt);
 extern int snmp_mib_init(void *ptr[2], size_t mibsize);
diff --git a/include/net/netns/mib.h b/include/net/netns/mib.h
index 1094ebbf0b42..b5b1115adfa8 100644
--- a/include/net/netns/mib.h
+++ b/include/net/netns/mib.h
@@ -6,6 +6,7 @@
 struct netns_mib {
         DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics);
         DEFINE_SNMP_STAT(struct ipstats_mib, ip_statistics);
+        DEFINE_SNMP_STAT(struct linux_mib, net_statistics);
 };
 
 #endif
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 3090a9307c46..776ed3199b52 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -115,8 +115,6 @@
 #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
@@ -1348,10 +1346,15 @@ static __net_init int ipv4_mib_init_net(struct net *net)
         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:
@@ -1360,6 +1363,7 @@ err_tcp_mib:
 
 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);
 }
@@ -1371,9 +1375,6 @@ static __net_initdata struct pernet_operations ipv4_mib_ops = {
 
 static int __init init_ipv4_mibs(void)
 {
-        if (snmp_mib_init((void **)net_statistics,
-                          sizeof(struct linux_mib)) < 0)
-                goto err_net_mib;
         if (snmp_mib_init((void **)icmp_statistics,
                           sizeof(struct icmp_mib)) < 0)
                 goto err_icmp_mib;
@@ -1401,8 +1402,6 @@ err_udp_mib:
 err_icmpmsg_mib:
         snmp_mib_free((void **)icmp_statistics);
 err_icmp_mib:
-        snmp_mib_free((void **)net_statistics);
-err_net_mib:
         return -ENOMEM;
 }
 
@@ -1582,5 +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);
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 2698bb2ce98f..ef38b1dccfda 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -421,7 +421,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
         seq_puts(seq, "\nTcpExt:");
         for (i = 0; snmp4_net_list[i].name != NULL; i++)
                 seq_printf(seq, " %lu",
-                           snmp_fold_field((void **)net_statistics,
+                           snmp_fold_field((void **)init_net.mib.net_statistics,
                                            snmp4_net_list[i].entry));
 
         seq_puts(seq, "\nIpExt:");