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/*
* xfrm_proc.c
*
* Copyright (C)2006-2007 USAGI/WIDE Project
*
* Authors: Masahide NAKAMURA <nakam@linux-ipv6.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/snmp.h>
#include <net/xfrm.h>
static struct snmp_mib xfrm_mib_list[] = {
SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR),
SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR),
SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR),
SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES),
SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR),
SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR),
SNMP_MIB_ITEM("XfrmInStateSeqError", LINUX_MIB_XFRMINSTATESEQERROR),
SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED),
SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH),
SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID),
SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH),
SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS),
SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK),
SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR),
SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR),
SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR),
SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR),
SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES),
SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR),
SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR),
SNMP_MIB_ITEM("XfrmOutStateSeqError", LINUX_MIB_XFRMOUTSTATESEQERROR),
SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED),
SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK),
SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD),
SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
SNMP_MIB_SENTINEL
};
static unsigned long
fold_field(void *mib[], int offt)
{
unsigned long res = 0;
int i;
for_each_possible_cpu(i) {
res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt);
res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt);
}
return res;
}
static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
{
struct net *net = seq->private;
int i;
for (i=0; xfrm_mib_list[i].name; i++)
seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
fold_field((void **)net->mib.xfrm_statistics,
xfrm_mib_list[i].entry));
return 0;
}
static int xfrm_statistics_seq_open(struct inode *inode, struct file *file)
{
return single_open_net(inode, file, xfrm_statistics_seq_show);
}
static struct file_operations xfrm_statistics_seq_fops = {
.owner = THIS_MODULE,
.open = xfrm_statistics_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release_net,
};
int __net_init xfrm_proc_init(struct net *net)
{
if (!proc_net_fops_create(net, "xfrm_stat", S_IRUGO,
&xfrm_statistics_seq_fops))
return -ENOMEM;
return 0;
}
void xfrm_proc_fini(struct net *net)
{
proc_net_remove(net, "xfrm_stat");
}
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