mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
698365fa18
commit8f0ea0fe3a(snmp: reduce percpu needs by 50%) reduced snmp array size to 1, so technically it doesn't have to be an array any more. What's more, after the following commit: commit933393f58fDate: Thu Dec 22 11:58:51 2011 -0600 percpu: Remove irqsafe_cpu_xxx variants We simply say that regular this_cpu use must be safe regardless of preemption and interrupt state. That has no material change for x86 and s390 implementations of this_cpu operations. However, arches that do not provide their own implementation for this_cpu operations will now get code generated that disables interrupts instead of preemption. probably no arch wants to have SNMP_ARRAY_SZ == 2. At least after almost 3 years, no one complains. So, just convert the array to a single pointer and remove snmp_mib_init() and snmp_mib_free() as well. Cc: Christoph Lameter <cl@linux.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/*
|
|
* 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 <linux/export.h>
|
|
#include <net/snmp.h>
|
|
#include <net/xfrm.h>
|
|
|
|
static const 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_ITEM("XfrmFwdHdrError", LINUX_MIB_XFRMFWDHDRERROR),
|
|
SNMP_MIB_ITEM("XfrmOutStateInvalid", LINUX_MIB_XFRMOUTSTATEINVALID),
|
|
SNMP_MIB_ITEM("XfrmAcquireError", LINUX_MIB_XFRMACQUIREERROR),
|
|
SNMP_MIB_SENTINEL
|
|
};
|
|
|
|
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,
|
|
snmp_fold_field(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 const 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_create("xfrm_stat", S_IRUGO, net->proc_net,
|
|
&xfrm_statistics_seq_fops))
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
void xfrm_proc_fini(struct net *net)
|
|
{
|
|
remove_proc_entry("xfrm_stat", net->proc_net);
|
|
}
|