net: Compute protocol sequence numbers and fragment IDs using MD5.
[linux-2.6.git] / net / dccp / sysctl.c
1 /*
2  *  net/dccp/sysctl.c
3  *
4  *  An implementation of the DCCP protocol
5  *  Arnaldo Carvalho de Melo <acme@mandriva.com>
6  *
7  *      This program is free software; you can redistribute it and/or
8  *      modify it under the terms of the GNU General Public License v2
9  *      as published by the Free Software Foundation.
10  */
11
12 #include <linux/mm.h>
13 #include <linux/sysctl.h>
14 #include "dccp.h"
15 #include "feat.h"
16
17 #ifndef CONFIG_SYSCTL
18 #error This file should not be compiled without CONFIG_SYSCTL defined
19 #endif
20
21 /* Boundary values */
22 static int              zero     = 0,
23                         u8_max   = 0xFF;
24 static unsigned long    seqw_min = DCCPF_SEQ_WMIN,
25                         seqw_max = 0xFFFFFFFF;          /* maximum on 32 bit */
26
27 static struct ctl_table dccp_default_table[] = {
28         {
29                 .procname       = "seq_window",
30                 .data           = &sysctl_dccp_sequence_window,
31                 .maxlen         = sizeof(sysctl_dccp_sequence_window),
32                 .mode           = 0644,
33                 .proc_handler   = proc_doulongvec_minmax,
34                 .extra1         = &seqw_min,            /* RFC 4340, 7.5.2 */
35                 .extra2         = &seqw_max,
36         },
37         {
38                 .procname       = "rx_ccid",
39                 .data           = &sysctl_dccp_rx_ccid,
40                 .maxlen         = sizeof(sysctl_dccp_rx_ccid),
41                 .mode           = 0644,
42                 .proc_handler   = proc_dointvec_minmax,
43                 .extra1         = &zero,
44                 .extra2         = &u8_max,              /* RFC 4340, 10. */
45         },
46         {
47                 .procname       = "tx_ccid",
48                 .data           = &sysctl_dccp_tx_ccid,
49                 .maxlen         = sizeof(sysctl_dccp_tx_ccid),
50                 .mode           = 0644,
51                 .proc_handler   = proc_dointvec_minmax,
52                 .extra1         = &zero,
53                 .extra2         = &u8_max,              /* RFC 4340, 10. */
54         },
55         {
56                 .procname       = "request_retries",
57                 .data           = &sysctl_dccp_request_retries,
58                 .maxlen         = sizeof(sysctl_dccp_request_retries),
59                 .mode           = 0644,
60                 .proc_handler   = proc_dointvec_minmax,
61                 .extra1         = &zero,
62                 .extra2         = &u8_max,
63         },
64         {
65                 .procname       = "retries1",
66                 .data           = &sysctl_dccp_retries1,
67                 .maxlen         = sizeof(sysctl_dccp_retries1),
68                 .mode           = 0644,
69                 .proc_handler   = proc_dointvec_minmax,
70                 .extra1         = &zero,
71                 .extra2         = &u8_max,
72         },
73         {
74                 .procname       = "retries2",
75                 .data           = &sysctl_dccp_retries2,
76                 .maxlen         = sizeof(sysctl_dccp_retries2),
77                 .mode           = 0644,
78                 .proc_handler   = proc_dointvec_minmax,
79                 .extra1         = &zero,
80                 .extra2         = &u8_max,
81         },
82         {
83                 .procname       = "tx_qlen",
84                 .data           = &sysctl_dccp_tx_qlen,
85                 .maxlen         = sizeof(sysctl_dccp_tx_qlen),
86                 .mode           = 0644,
87                 .proc_handler   = proc_dointvec_minmax,
88                 .extra1         = &zero,
89         },
90         {
91                 .procname       = "sync_ratelimit",
92                 .data           = &sysctl_dccp_sync_ratelimit,
93                 .maxlen         = sizeof(sysctl_dccp_sync_ratelimit),
94                 .mode           = 0644,
95                 .proc_handler   = proc_dointvec_ms_jiffies,
96         },
97
98         { }
99 };
100
101 static struct ctl_path dccp_path[] = {
102         { .procname = "net", },
103         { .procname = "dccp", },
104         { .procname = "default", },
105         { }
106 };
107
108 static struct ctl_table_header *dccp_table_header;
109
110 int __init dccp_sysctl_init(void)
111 {
112         dccp_table_header = register_sysctl_paths(dccp_path,
113                         dccp_default_table);
114
115         return dccp_table_header != NULL ? 0 : -ENOMEM;
116 }
117
118 void dccp_sysctl_exit(void)
119 {
120         if (dccp_table_header != NULL) {
121                 unregister_sysctl_table(dccp_table_header);
122                 dccp_table_header = NULL;
123         }
124 }