xfrm_proc.c

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * xfrm_proc.c
 4 *
 5 * Copyright (C)2006-2007 USAGI/WIDE Project
 6 *
 7 * Authors:	Masahide NAKAMURA <nakam@linux-ipv6.org>
 8 */
 9#include <linux/proc_fs.h>
10#include <linux/seq_file.h>
11#include <linux/export.h>
12#include <net/snmp.h>
13#include <net/xfrm.h>
14
15static const struct snmp_mib xfrm_mib_list[] = {
16	SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR),
17	SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR),
18	SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR),
19	SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES),
20	SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR),
21	SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR),
22	SNMP_MIB_ITEM("XfrmInStateSeqError", LINUX_MIB_XFRMINSTATESEQERROR),
23	SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED),
24	SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH),
25	SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID),
26	SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH),
27	SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS),
28	SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK),
29	SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR),
30	SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR),
31	SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR),
32	SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR),
33	SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES),
34	SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR),
35	SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR),
36	SNMP_MIB_ITEM("XfrmOutStateSeqError", LINUX_MIB_XFRMOUTSTATESEQERROR),
37	SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED),
38	SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK),
39	SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD),
40	SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
41	SNMP_MIB_ITEM("XfrmFwdHdrError", LINUX_MIB_XFRMFWDHDRERROR),
42	SNMP_MIB_ITEM("XfrmOutStateInvalid", LINUX_MIB_XFRMOUTSTATEINVALID),
43	SNMP_MIB_ITEM("XfrmAcquireError", LINUX_MIB_XFRMACQUIREERROR),
44	SNMP_MIB_ITEM("XfrmOutStateDirError", LINUX_MIB_XFRMOUTSTATEDIRERROR),
45	SNMP_MIB_ITEM("XfrmInStateDirError", LINUX_MIB_XFRMINSTATEDIRERROR),
46	SNMP_MIB_ITEM("XfrmInIptfsError", LINUX_MIB_XFRMINIPTFSERROR),
47	SNMP_MIB_ITEM("XfrmOutNoQueueSpace", LINUX_MIB_XFRMOUTNOQSPACE),
48};
49
50static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
51{
52	unsigned long buff[ARRAY_SIZE(xfrm_mib_list)];
53	const int cnt = ARRAY_SIZE(xfrm_mib_list);
54	struct net *net = seq->private;
55	int i;
56
57	memset(buff, 0, sizeof(buff));
58
59	xfrm_state_update_stats(net);
60	snmp_get_cpu_field_batch_cnt(buff, xfrm_mib_list, cnt,
61				     net->mib.xfrm_statistics);
62	for (i = 0; i < cnt; i++)
63		seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
64						buff[i]);
65
66	return 0;
67}
68
69int __net_init xfrm_proc_init(struct net *net)
70{
71	if (!proc_create_net_single("xfrm_stat", 0444, net->proc_net,
72			 xfrm_statistics_seq_show, NULL))
73		return -ENOMEM;
74	return 0;
75}
76
77void xfrm_proc_fini(struct net *net)
78{
79	remove_proc_entry("xfrm_stat", net->proc_net);
80}