4c4d41f200
When host ping its peer, ICMP echo request packet triggers IPsec policy, then host negotiates SA secret with its peer. After IKE installed SA for OUT direction, but before SA for IN direction installed, host get ICMP echo reply from its peer. At the time being, the SA state for IN direction could be XFRM_STATE_ACQ, then the received packet will be dropped after adding LINUX_MIB_XFRMINSTATEINVALID statistic. Adding a LINUX_MIB_XFRMACQUIREERROR statistic counter for such scenario when SA in larval state is much clearer for user than LINUX_MIB_XFRMINSTATEINVALID which indicates the SA is totally bad. Signed-off-by: Fan Du <fan.du@windriver.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
87 lines
3.3 KiB
C
87 lines
3.3 KiB
C
/*
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* xfrm_proc.c
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*
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* Copyright (C)2006-2007 USAGI/WIDE Project
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*
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* Authors: Masahide NAKAMURA <nakam@linux-ipv6.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/export.h>
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#include <net/snmp.h>
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#include <net/xfrm.h>
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static const struct snmp_mib xfrm_mib_list[] = {
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SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR),
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SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR),
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SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR),
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SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES),
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SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR),
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SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR),
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SNMP_MIB_ITEM("XfrmInStateSeqError", LINUX_MIB_XFRMINSTATESEQERROR),
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SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED),
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SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH),
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SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID),
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SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH),
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SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS),
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SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK),
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SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR),
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SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR),
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SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR),
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SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR),
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SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES),
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SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR),
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SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR),
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SNMP_MIB_ITEM("XfrmOutStateSeqError", LINUX_MIB_XFRMOUTSTATESEQERROR),
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SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED),
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SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK),
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SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD),
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SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
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SNMP_MIB_ITEM("XfrmFwdHdrError", LINUX_MIB_XFRMFWDHDRERROR),
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SNMP_MIB_ITEM("XfrmOutStateInvalid", LINUX_MIB_XFRMOUTSTATEINVALID),
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SNMP_MIB_ITEM("XfrmAcquireError", LINUX_MIB_XFRMACQUIREERROR),
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SNMP_MIB_SENTINEL
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};
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static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
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{
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struct net *net = seq->private;
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int i;
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for (i=0; xfrm_mib_list[i].name; i++)
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seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
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snmp_fold_field((void __percpu **)
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net->mib.xfrm_statistics,
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xfrm_mib_list[i].entry));
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return 0;
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}
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static int xfrm_statistics_seq_open(struct inode *inode, struct file *file)
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{
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return single_open_net(inode, file, xfrm_statistics_seq_show);
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}
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static const struct file_operations xfrm_statistics_seq_fops = {
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.owner = THIS_MODULE,
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.open = xfrm_statistics_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release_net,
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};
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int __net_init xfrm_proc_init(struct net *net)
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{
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if (!proc_create("xfrm_stat", S_IRUGO, net->proc_net,
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&xfrm_statistics_seq_fops))
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return -ENOMEM;
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return 0;
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}
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void xfrm_proc_fini(struct net *net)
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{
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remove_proc_entry("xfrm_stat", net->proc_net);
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}
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