1 /* 2 * xfrm_proc.c 3 * 4 * Copyright (C)2006-2007 USAGI/WIDE Project 5 * 6 * Authors: Masahide NAKAMURA <nakam@linux-ipv6.org> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 11 * 2 of the License, or (at your option) any later version. 12 */ 13 #include <linux/proc_fs.h> 14 #include <linux/seq_file.h> 15 #include <net/snmp.h> 16 #include <net/xfrm.h> 17 18 static struct snmp_mib xfrm_mib_list[] = { 19 SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR), 20 SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR), 21 SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR), 22 SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES), 23 SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR), 24 SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR), 25 SNMP_MIB_ITEM("XfrmInStateSeqError", LINUX_MIB_XFRMINSTATESEQERROR), 26 SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED), 27 SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH), 28 SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID), 29 SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH), 30 SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS), 31 SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK), 32 SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR), 33 SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR), 34 SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR), 35 SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR), 36 SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES), 37 SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR), 38 SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR), 39 SNMP_MIB_ITEM("XfrmOutStateSeqError", LINUX_MIB_XFRMOUTSTATESEQERROR), 40 SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED), 41 SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK), 42 SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD), 43 SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR), 44 SNMP_MIB_SENTINEL 45 }; 46 47 static unsigned long 48 fold_field(void *mib[], int offt) 49 { 50 unsigned long res = 0; 51 int i; 52 53 for_each_possible_cpu(i) { 54 res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt); 55 res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt); 56 } 57 return res; 58 } 59 60 static int xfrm_statistics_seq_show(struct seq_file *seq, void *v) 61 { 62 int i; 63 for (i=0; xfrm_mib_list[i].name; i++) 64 seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name, 65 fold_field((void **)xfrm_statistics, 66 xfrm_mib_list[i].entry)); 67 return 0; 68 } 69 70 static int xfrm_statistics_seq_open(struct inode *inode, struct file *file) 71 { 72 return single_open(file, xfrm_statistics_seq_show, NULL); 73 } 74 75 static struct file_operations xfrm_statistics_seq_fops = { 76 .owner = THIS_MODULE, 77 .open = xfrm_statistics_seq_open, 78 .read = seq_read, 79 .llseek = seq_lseek, 80 .release = single_release, 81 }; 82 83 int __init xfrm_proc_init(void) 84 { 85 int rc = 0; 86 87 if (!proc_net_fops_create(&init_net, "xfrm_stat", S_IRUGO, 88 &xfrm_statistics_seq_fops)) 89 goto stat_fail; 90 91 out: 92 return rc; 93 94 stat_fail: 95 rc = -ENOMEM; 96 goto out; 97 } 98