1/*
2 * xfrm_proc.c
3 *
4 * Copyright (C)2006-2007 USAGI/WIDE Project
5 *
6 * Authors:	Masahide NAKAMURA <nakam@linux-ipv6.org>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13#include <linux/proc_fs.h>
14#include <linux/seq_file.h>
15#include <linux/export.h>
16#include <net/snmp.h>
17#include <net/xfrm.h>
18
19static const struct snmp_mib xfrm_mib_list[] = {
20	SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR),
21	SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR),
22	SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR),
23	SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES),
24	SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR),
25	SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR),
26	SNMP_MIB_ITEM("XfrmInStateSeqError", LINUX_MIB_XFRMINSTATESEQERROR),
27	SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED),
28	SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH),
29	SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID),
30	SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH),
31	SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS),
32	SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK),
33	SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR),
34	SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR),
35	SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR),
36	SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR),
37	SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES),
38	SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR),
39	SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR),
40	SNMP_MIB_ITEM("XfrmOutStateSeqError", LINUX_MIB_XFRMOUTSTATESEQERROR),
41	SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED),
42	SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK),
43	SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD),
44	SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
45	SNMP_MIB_ITEM("XfrmFwdHdrError", LINUX_MIB_XFRMFWDHDRERROR),
46	SNMP_MIB_ITEM("XfrmOutStateInvalid", LINUX_MIB_XFRMOUTSTATEINVALID),
47	SNMP_MIB_ITEM("XfrmAcquireError", LINUX_MIB_XFRMACQUIREERROR),
48	SNMP_MIB_SENTINEL
49};
50
51static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
52{
53	struct net *net = seq->private;
54	int i;
55	for (i = 0; xfrm_mib_list[i].name; i++)
56		seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
57			   snmp_fold_field(net->mib.xfrm_statistics,
58					   xfrm_mib_list[i].entry));
59	return 0;
60}
61
62static int xfrm_statistics_seq_open(struct inode *inode, struct file *file)
63{
64	return single_open_net(inode, file, xfrm_statistics_seq_show);
65}
66
67static const struct file_operations xfrm_statistics_seq_fops = {
68	.owner	 = THIS_MODULE,
69	.open	 = xfrm_statistics_seq_open,
70	.read	 = seq_read,
71	.llseek	 = seq_lseek,
72	.release = single_release_net,
73};
74
75int __net_init xfrm_proc_init(struct net *net)
76{
77	if (!proc_create("xfrm_stat", S_IRUGO, net->proc_net,
78			 &xfrm_statistics_seq_fops))
79		return -ENOMEM;
80	return 0;
81}
82
83void xfrm_proc_fini(struct net *net)
84{
85	remove_proc_entry("xfrm_stat", net->proc_net);
86}
87