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Date: Thu, 17 Jul 2008 17:36:42 +0400
From: Pavel Emelyanov <xemul@...nvz.org>
To: David Miller <davem@...emloft.net>
CC: Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH 12/16] proc: create /proc/net/snmp file in each net
All the statistics show in this file is also made per-net already.
Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
---
net/ipv4/proc.c | 70 +++++++++++++++++++++++++++++++++++++++---------------
1 files changed, 50 insertions(+), 20 deletions(-)
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index df8c4af..367b81f 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -266,11 +266,12 @@ static void icmpmsg_put(struct seq_file *seq)
int j, i, count;
static int out[PERLINE];
+ struct net *net = seq->private;
count = 0;
for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
- if (snmp_fold_field((void **) init_net.mib.icmpmsg_statistics, i))
+ if (snmp_fold_field((void **) net->mib.icmpmsg_statistics, i))
out[count++] = i;
if (count < PERLINE)
continue;
@@ -282,7 +283,7 @@ static void icmpmsg_put(struct seq_file *seq)
seq_printf(seq, "\nIcmpMsg: ");
for (j = 0; j < PERLINE; ++j)
seq_printf(seq, " %lu",
- snmp_fold_field((void **) init_net.mib.icmpmsg_statistics,
+ snmp_fold_field((void **) net->mib.icmpmsg_statistics,
out[j]));
seq_putc(seq, '\n');
}
@@ -294,7 +295,7 @@ static void icmpmsg_put(struct seq_file *seq)
seq_printf(seq, "\nIcmpMsg:");
for (j = 0; j < count; ++j)
seq_printf(seq, " %lu", snmp_fold_field((void **)
- init_net.mib.icmpmsg_statistics, out[j]));
+ net->mib.icmpmsg_statistics, out[j]));
}
#undef PERLINE
@@ -303,6 +304,7 @@ static void icmpmsg_put(struct seq_file *seq)
static void icmp_put(struct seq_file *seq)
{
int i;
+ struct net *net = seq->private;
seq_puts(seq, "\nIcmp: InMsgs InErrors");
for (i=0; icmpmibmap[i].name != NULL; i++)
@@ -311,18 +313,18 @@ static void icmp_put(struct seq_file *seq)
for (i=0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " Out%s", icmpmibmap[i].name);
seq_printf(seq, "\nIcmp: %lu %lu",
- snmp_fold_field((void **) init_net.mib.icmp_statistics, ICMP_MIB_INMSGS),
- snmp_fold_field((void **) init_net.mib.icmp_statistics, ICMP_MIB_INERRORS));
+ snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
+ snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
for (i=0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **) init_net.mib.icmpmsg_statistics,
+ snmp_fold_field((void **) net->mib.icmpmsg_statistics,
icmpmibmap[i].index));
seq_printf(seq, " %lu %lu",
- snmp_fold_field((void **) init_net.mib.icmp_statistics, ICMP_MIB_OUTMSGS),
- snmp_fold_field((void **) init_net.mib.icmp_statistics, ICMP_MIB_OUTERRORS));
+ snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
+ snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
for (i=0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **) init_net.mib.icmpmsg_statistics,
+ snmp_fold_field((void **) net->mib.icmpmsg_statistics,
icmpmibmap[i].index | 0x100));
}
@@ -332,6 +334,7 @@ static void icmp_put(struct seq_file *seq)
static int snmp_seq_show(struct seq_file *seq, void *v)
{
int i;
+ struct net *net = seq->private;
seq_puts(seq, "Ip: Forwarding DefaultTTL");
@@ -344,7 +347,7 @@ 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 **)init_net.mib.ip_statistics,
+ snmp_fold_field((void **)net->mib.ip_statistics,
snmp4_ipstats_list[i].entry));
icmp_put(seq); /* RFC 2011 compatibility */
@@ -359,11 +362,11 @@ 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 **)init_net.mib.tcp_statistics,
+ snmp_fold_field((void **)net->mib.tcp_statistics,
snmp4_tcp_list[i].entry));
else
seq_printf(seq, " %lu",
- snmp_fold_field((void **)init_net.mib.tcp_statistics,
+ snmp_fold_field((void **)net->mib.tcp_statistics,
snmp4_tcp_list[i].entry));
}
@@ -374,7 +377,7 @@ 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 **)init_net.mib.udp_statistics,
+ snmp_fold_field((void **)net->mib.udp_statistics,
snmp4_udp_list[i].entry));
/* the UDP and UDP-Lite MIBs are the same */
@@ -385,7 +388,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdpLite:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **)init_net.mib.udplite_statistics,
+ snmp_fold_field((void **)net->mib.udplite_statistics,
snmp4_udp_list[i].entry));
seq_putc(seq, '\n');
@@ -394,7 +397,32 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
static int snmp_seq_open(struct inode *inode, struct file *file)
{
- return single_open(file, snmp_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, snmp_seq_show, net);
+ if (err < 0)
+ goto err_open;
+
+ return 0;
+
+err_open:
+ put_net(net);
+err_net:
+ return err;
+}
+
+static int snmp_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 snmp_seq_fops = {
@@ -402,7 +430,7 @@ static const struct file_operations snmp_seq_fops = {
.open = snmp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = single_release,
+ .release = snmp_seq_release,
};
@@ -483,9 +511,13 @@ static __net_init int ip_proc_init_net(struct net *net)
return -ENOMEM;
if (!proc_net_fops_create(net, "netstat", S_IRUGO, &netstat_seq_fops))
goto out_netstat;
+ if (!proc_net_fops_create(net, "snmp", S_IRUGO, &snmp_seq_fops))
+ goto out_snmp;
return 0;
+out_snmp:
+ proc_net_remove(net, "netstat");
out_netstat:
proc_net_remove(net, "sockstat");
return -ENOMEM;
@@ -493,6 +525,7 @@ out_netstat:
static __net_exit void ip_proc_exit_net(struct net *net)
{
+ proc_net_remove(net, "snmp");
proc_net_remove(net, "netstat");
proc_net_remove(net, "sockstat");
}
@@ -509,12 +542,9 @@ int __init ip_misc_proc_init(void)
if (register_pernet_subsys(&ip_proc_ops))
goto out_pernet;
- if (!proc_net_fops_create(&init_net, "snmp", S_IRUGO, &snmp_seq_fops))
- goto out_snmp;
out:
return rc;
-out_snmp:
- unregister_pernet_subsys(&ip_proc_ops);
+
out_pernet:
rc = -ENOMEM;
goto out;
--
1.5.5.1
--
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