net/xfrm/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
  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_SENTINEL
  45 };
  46
  47 static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
  48 {
  49         unsigned long buff[LINUX_MIB_XFRMMAX];
  50         struct net *net = seq->private;
  51         int i;
  52
  53         memset(buff, 0, sizeof(unsigned long) * LINUX_MIB_XFRMMAX);
  54
  55         snmp_get_cpu_field_batch(buff, xfrm_mib_list,
  56                                  net->mib.xfrm_statistics);
  57         for (i = 0; xfrm_mib_list[i].name; i++)
  58                 seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
  59                                                 buff[i]);
  60
  61         return 0;
  62 }
  63
  64 int __net_init xfrm_proc_init(struct net *net)
  65 {
  66         if (!proc_create_net_single("xfrm_stat", 0444, net->proc_net,
  67                          xfrm_statistics_seq_show, NULL))
  68                 return -ENOMEM;
  69         return 0;
  70 }
  71
  72 void xfrm_proc_fini(struct net *net)
  73 {
  74         remove_proc_entry("xfrm_stat", net->proc_net);
  75 }