/* * xfrm_proc.c * * Copyright (C)2006-2007 USAGI/WIDE Project * * Authors: Masahide NAKAMURA <nakam@linux-ipv6.org> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <net/snmp.h> #include <net/xfrm.h> static struct snmp_mib xfrm_mib_list[] = { SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR), SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR), SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR), SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES), SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR), SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR), SNMP_MIB_ITEM("XfrmInStateSeqError", LINUX_MIB_XFRMINSTATESEQERROR), SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED), SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH), SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID), SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH), SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS), SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK), SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR), SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR), SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR), SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR), SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES), SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR), SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR), SNMP_MIB_ITEM("XfrmOutStateSeqError", LINUX_MIB_XFRMOUTSTATESEQERROR), SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED), SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK), SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD), SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR), SNMP_MIB_SENTINEL }; static unsigned long fold_field(void *mib[], int offt) { unsigned long res = 0; int i; for_each_possible_cpu(i) { res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt); res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt); } return res; } static int xfrm_statistics_seq_show(struct seq_file *seq, void *v) { int i; for (i=0; xfrm_mib_list[i].name; i++) seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name, fold_field((void **)xfrm_statistics, xfrm_mib_list[i].entry)); return 0; } static int xfrm_statistics_seq_open(struct inode *inode, struct file *file) { return single_open(file, xfrm_statistics_seq_show, NULL); } static struct file_operations xfrm_statistics_seq_fops = { .owner = THIS_MODULE, .open = xfrm_statistics_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; int __init xfrm_proc_init(void) { int rc = 0; if (!proc_net_fops_create(&init_net, "xfrm_stat", S_IRUGO, &xfrm_statistics_seq_fops)) goto stat_fail; out: return rc; stat_fail: rc = -ENOMEM; goto out; }