netns xfrm: ->dst_lookup in netns
[linux-2.6.git] / net / xfrm / xfrm_proc.c
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 }