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  
15  static 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_SENTINEL
47  };
48  
xfrm_statistics_seq_show(struct seq_file * seq,void * v)49  static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
50  {
51  	unsigned long buff[LINUX_MIB_XFRMMAX];
52  	struct net *net = seq->private;
53  	int i;
54  
55  	memset(buff, 0, sizeof(unsigned long) * LINUX_MIB_XFRMMAX);
56  
57  	xfrm_state_update_stats(net);
58  	snmp_get_cpu_field_batch(buff, xfrm_mib_list,
59  				 net->mib.xfrm_statistics);
60  	for (i = 0; xfrm_mib_list[i].name; i++)
61  		seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
62  						buff[i]);
63  
64  	return 0;
65  }
66  
xfrm_proc_init(struct net * net)67  int __net_init xfrm_proc_init(struct net *net)
68  {
69  	if (!proc_create_net_single("xfrm_stat", 0444, net->proc_net,
70  			 xfrm_statistics_seq_show, NULL))
71  		return -ENOMEM;
72  	return 0;
73  }
74  
xfrm_proc_fini(struct net * net)75  void xfrm_proc_fini(struct net *net)
76  {
77  	remove_proc_entry("xfrm_stat", net->proc_net);
78  }
79