mib: put udp statistics on struct net

[net-next-2.6.git] / net / ipv4 / proc.c

diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index cb3787fbeb909191e91981ebb318303dea1adb97..869085c8e43fed88dbf292f0c289bf349fc23b59 100644 (file)
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -7,8 +7,6 @@
  *             PROC file system.  It is mainly used for debugging and
  *             statistics.
  *
- * Version:    $Id: proc.c,v 1.45 2001/05/16 16:45:35 davem Exp $
- *
  * Authors:    Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  *             Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
  *             Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
@@ -51,24 +49,54 @@
  */
 static int sockstat_seq_show(struct seq_file *seq, void *v)
 {
+       struct net *net = seq->private;
+
        socket_seq_show(seq);
        seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
-                  sock_prot_inuse_get(&tcp_prot),
+                  sock_prot_inuse_get(net, &tcp_prot),
                   atomic_read(&tcp_orphan_count),
                   tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
                   atomic_read(&tcp_memory_allocated));
-       seq_printf(seq, "UDP: inuse %d mem %d\n", sock_prot_inuse_get(&udp_prot),
+       seq_printf(seq, "UDP: inuse %d mem %d\n",
+                  sock_prot_inuse_get(net, &udp_prot),
                   atomic_read(&udp_memory_allocated));
-       seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse_get(&udplite_prot));
-       seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse_get(&raw_prot));
+       seq_printf(seq, "UDPLITE: inuse %d\n",
+                  sock_prot_inuse_get(net, &udplite_prot));
+       seq_printf(seq, "RAW: inuse %d\n",
+                  sock_prot_inuse_get(net, &raw_prot));
        seq_printf(seq,  "FRAG: inuse %d memory %d\n",
-                       ip_frag_nqueues(), ip_frag_mem());
+                       ip_frag_nqueues(net), ip_frag_mem(net));
        return 0;
 }
 
 static int sockstat_seq_open(struct inode *inode, struct file *file)
 {
-       return single_open(file, sockstat_seq_show, NULL);
+       int err;
+       struct net *net;
+
+       err = -ENXIO;
+       net = get_proc_net(inode);
+       if (net == NULL)
+               goto err_net;
+
+       err = single_open(file, sockstat_seq_show, net);
+       if (err < 0)
+               goto err_open;
+
+       return 0;
+
+err_open:
+       put_net(net);
+err_net:
+       return err;
+}
+
+static int sockstat_seq_release(struct inode *inode, struct file *file)
+{
+       struct net *net = ((struct seq_file *)file->private_data)->private;
+
+       put_net(net);
+       return single_release(inode, file);
 }
 
 static const struct file_operations sockstat_seq_fops = {
@@ -76,7 +104,7 @@ static const struct file_operations sockstat_seq_fops = {
        .open    = sockstat_seq_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
-       .release = single_release,
+       .release = sockstat_seq_release,
 };
 
 /* snmp items */
@@ -316,7 +344,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
 
        for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
                seq_printf(seq, " %lu",
-                          snmp_fold_field((void **)ip_statistics,
+                          snmp_fold_field((void **)init_net.mib.ip_statistics,
                                           snmp4_ipstats_list[i].entry));
 
        icmp_put(seq);  /* RFC 2011 compatibility */
@@ -331,11 +359,11 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
                /* MaxConn field is signed, RFC 2012 */
                if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
                        seq_printf(seq, " %ld",
-                                  snmp_fold_field((void **)tcp_statistics,
+                                  snmp_fold_field((void **)init_net.mib.tcp_statistics,
                                                   snmp4_tcp_list[i].entry));
                else
                        seq_printf(seq, " %lu",
-                                  snmp_fold_field((void **)tcp_statistics,
+                                  snmp_fold_field((void **)init_net.mib.tcp_statistics,
                                                   snmp4_tcp_list[i].entry));
        }
 
@@ -346,7 +374,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
        seq_puts(seq, "\nUdp:");
        for (i = 0; snmp4_udp_list[i].name != NULL; i++)
                seq_printf(seq, " %lu",
-                          snmp_fold_field((void **)udp_statistics,
+                          snmp_fold_field((void **)init_net.mib.udp_statistics,
                                           snmp4_udp_list[i].entry));
 
        /* the UDP and UDP-Lite MIBs are the same */
@@ -393,7 +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:");
@@ -403,7 +431,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
        seq_puts(seq, "\nIpExt:");
        for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
                seq_printf(seq, " %lu",
-                          snmp_fold_field((void **)ip_statistics,
+                          snmp_fold_field((void **)init_net.mib.ip_statistics,
                                           snmp4_ipextstats_list[i].entry));
 
        seq_putc(seq, '\n');
@@ -423,25 +451,42 @@ static const struct file_operations netstat_seq_fops = {
        .release = single_release,
 };
 
+static __net_init int ip_proc_init_net(struct net *net)
+{
+       if (!proc_net_fops_create(net, "sockstat", S_IRUGO, &sockstat_seq_fops))
+               return -ENOMEM;
+       return 0;
+}
+
+static __net_exit void ip_proc_exit_net(struct net *net)
+{
+       proc_net_remove(net, "sockstat");
+}
+
+static __net_initdata struct pernet_operations ip_proc_ops = {
+       .init = ip_proc_init_net,
+       .exit = ip_proc_exit_net,
+};
+
 int __init ip_misc_proc_init(void)
 {
        int rc = 0;
 
+       if (register_pernet_subsys(&ip_proc_ops))
+               goto out_pernet;
+
        if (!proc_net_fops_create(&init_net, "netstat", S_IRUGO, &netstat_seq_fops))
                goto out_netstat;
 
        if (!proc_net_fops_create(&init_net, "snmp", S_IRUGO, &snmp_seq_fops))
                goto out_snmp;
-
-       if (!proc_net_fops_create(&init_net, "sockstat", S_IRUGO, &sockstat_seq_fops))
-               goto out_sockstat;
 out:
        return rc;
-out_sockstat:
-       proc_net_remove(&init_net, "snmp");
 out_snmp:
        proc_net_remove(&init_net, "netstat");
 out_netstat:
+       unregister_pernet_subsys(&ip_proc_ops);
+out_pernet:
        rc = -ENOMEM;
        goto out;
 }