1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/* SCTP kernel reference Implementation
* Copyright (c) 2003 International Business Machines, Corp.
*
* This file is part of the SCTP kernel reference Implementation
*
* The SCTP reference implementation 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, or (at your option)
* any later version.
*
* The SCTP reference implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Sridhar Samudrala <sri@us.ibm.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
*/
#include <linux/types.h>
#include <linux/seq_file.h>
#include <net/sctp/sctp.h>
static char *sctp_snmp_list[] = {
#define SCTP_SNMP_ENTRY(x) #x
SCTP_SNMP_ENTRY(SctpCurrEstab),
SCTP_SNMP_ENTRY(SctpActiveEstabs),
SCTP_SNMP_ENTRY(SctpPassiveEstabs),
SCTP_SNMP_ENTRY(SctpAborteds),
SCTP_SNMP_ENTRY(SctpShutdowns),
SCTP_SNMP_ENTRY(SctpOutOfBlues),
SCTP_SNMP_ENTRY(SctpChecksumErrors),
SCTP_SNMP_ENTRY(SctpOutCtrlChunks),
SCTP_SNMP_ENTRY(SctpOutOrderChunks),
SCTP_SNMP_ENTRY(SctpOutUnorderChunks),
SCTP_SNMP_ENTRY(SctpInCtrlChunks),
SCTP_SNMP_ENTRY(SctpInOrderChunks),
SCTP_SNMP_ENTRY(SctpInUnorderChunks),
SCTP_SNMP_ENTRY(SctpFragUsrMsgs),
SCTP_SNMP_ENTRY(SctpReasmUsrMsgs),
SCTP_SNMP_ENTRY(SctpOutSCTPPacks),
SCTP_SNMP_ENTRY(SctpInSCTPPacks),
#undef SCTP_SNMP_ENTRY
};
/* Return the current value of a particular entry in the mib by adding its
* per cpu counters.
*/
static unsigned long
fold_field(void *mib[], int nr)
{
unsigned long res = 0;
int i;
for (i = 0; i < NR_CPUS; i++) {
if (!cpu_possible(i))
continue;
res +=
*((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) +
sizeof (unsigned long) * nr));
res +=
*((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) +
sizeof (unsigned long) * nr));
}
return res;
}
/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
{
int i;
for (i = 0; i < sizeof(sctp_snmp_list) / sizeof(char *); i++)
seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i],
fold_field((void **)sctp_statistics, i));
return 0;
}
/* Initialize the seq file operations for 'snmp' object. */
static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, sctp_snmp_seq_show, NULL);
}
static struct file_operations sctp_snmp_seq_fops = {
.open = sctp_snmp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* Set up the proc fs entry for 'snmp' object. */
int __init sctp_snmp_proc_init(void)
{
struct proc_dir_entry *p;
p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp);
if (!p)
return -ENOMEM;
p->proc_fops = &sctp_snmp_seq_fops;
return 0;
}
/* Cleanup the proc fs entry for 'snmp' object. */
void sctp_snmp_proc_exit(void)
{
remove_proc_entry("snmp", proc_net_sctp);
}
|
