linux/net/xfrm/xfrm_proc.c
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   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_SENTINEL
  45};
  46
  47static 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
  64int __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
  72void xfrm_proc_fini(struct net *net)
  73{
  74        remove_proc_entry("xfrm_stat", net->proc_net);
  75}
  76