[SCTP]: Implement SCTP-AUTH initializations.
[linux-3.10.git] / net / sctp / sysctl.c
1 /* SCTP kernel reference Implementation
2  * (C) Copyright IBM Corp. 2002, 2004
3  * Copyright (c) 2002 Intel Corp.
4  *
5  * This file is part of the SCTP kernel reference Implementation
6  *
7  * Sysctl related interfaces for SCTP.
8  *
9  * The SCTP reference implementation is free software;
10  * you can redistribute it and/or modify it under the terms of
11  * the GNU General Public License as published by
12  * the Free Software Foundation; either version 2, or (at your option)
13  * any later version.
14  *
15  * The SCTP reference implementation is distributed in the hope that it
16  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
17  *                 ************************
18  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19  * See the GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with GNU CC; see the file COPYING.  If not, write to
23  * the Free Software Foundation, 59 Temple Place - Suite 330,
24  * Boston, MA 02111-1307, USA.
25  *
26  * Please send any bug reports or fixes you make to the
27  * email address(es):
28  *    lksctp developers <lksctp-developers@lists.sourceforge.net>
29  *
30  * Or submit a bug report through the following website:
31  *    http://www.sf.net/projects/lksctp
32  *
33  * Written or modified by:
34  *    Mingqin Liu           <liuming@us.ibm.com>
35  *    Jon Grimm             <jgrimm@us.ibm.com>
36  *    Ardelle Fan           <ardelle.fan@intel.com>
37  *    Ryan Layer            <rmlayer@us.ibm.com>
38  *    Sridhar Samudrala     <sri@us.ibm.com>
39  *
40  * Any bugs reported given to us we will try to fix... any fixes shared will
41  * be incorporated into the next SCTP release.
42  */
43
44 #include <net/sctp/structs.h>
45 #include <net/sctp/sctp.h>
46 #include <linux/sysctl.h>
47
48 static int zero = 0;
49 static int one = 1;
50 static int timer_max = 86400000; /* ms in one day */
51 static int int_max = INT_MAX;
52 static long sack_timer_min = 1;
53 static long sack_timer_max = 500;
54
55 extern int sysctl_sctp_mem[3];
56 extern int sysctl_sctp_rmem[3];
57 extern int sysctl_sctp_wmem[3];
58
59 static ctl_table sctp_table[] = {
60         {
61                 .ctl_name       = NET_SCTP_RTO_INITIAL,
62                 .procname       = "rto_initial",
63                 .data           = &sctp_rto_initial,
64                 .maxlen         = sizeof(unsigned int),
65                 .mode           = 0644,
66                 .proc_handler   = &proc_dointvec_minmax,
67                 .strategy       = &sysctl_intvec,
68                 .extra1         = &one,
69                 .extra2         = &timer_max
70         },
71         {
72                 .ctl_name       = NET_SCTP_RTO_MIN,
73                 .procname       = "rto_min",
74                 .data           = &sctp_rto_min,
75                 .maxlen         = sizeof(unsigned int),
76                 .mode           = 0644,
77                 .proc_handler   = &proc_dointvec_minmax,
78                 .strategy       = &sysctl_intvec,
79                 .extra1         = &one,
80                 .extra2         = &timer_max
81         },
82         {
83                 .ctl_name       = NET_SCTP_RTO_MAX,
84                 .procname       = "rto_max",
85                 .data           = &sctp_rto_max,
86                 .maxlen         = sizeof(unsigned int),
87                 .mode           = 0644,
88                 .proc_handler   = &proc_dointvec_minmax,
89                 .strategy       = &sysctl_intvec,
90                 .extra1         = &one,
91                 .extra2         = &timer_max
92         },
93         {
94                 .ctl_name       = NET_SCTP_VALID_COOKIE_LIFE,
95                 .procname       = "valid_cookie_life",
96                 .data           = &sctp_valid_cookie_life,
97                 .maxlen         = sizeof(unsigned int),
98                 .mode           = 0644,
99                 .proc_handler   = &proc_dointvec_minmax,
100                 .strategy       = &sysctl_intvec,
101                 .extra1         = &one,
102                 .extra2         = &timer_max
103         },
104         {
105                 .ctl_name       = NET_SCTP_MAX_BURST,
106                 .procname       = "max_burst",
107                 .data           = &sctp_max_burst,
108                 .maxlen         = sizeof(int),
109                 .mode           = 0644,
110                 .proc_handler   = &proc_dointvec_minmax,
111                 .strategy       = &sysctl_intvec,
112                 .extra1         = &zero,
113                 .extra2         = &int_max
114         },
115         {
116                 .ctl_name       = NET_SCTP_ASSOCIATION_MAX_RETRANS,
117                 .procname       = "association_max_retrans",
118                 .data           = &sctp_max_retrans_association,
119                 .maxlen         = sizeof(int),
120                 .mode           = 0644,
121                 .proc_handler   = &proc_dointvec_minmax,
122                 .strategy       = &sysctl_intvec,
123                 .extra1         = &one,
124                 .extra2         = &int_max
125         },
126         {
127                 .ctl_name       = NET_SCTP_SNDBUF_POLICY,
128                 .procname       = "sndbuf_policy",
129                 .data           = &sctp_sndbuf_policy,
130                 .maxlen         = sizeof(int),
131                 .mode           = 0644,
132                 .proc_handler   = &proc_dointvec,
133                 .strategy       = &sysctl_intvec
134         },
135         {
136                 .ctl_name       = NET_SCTP_RCVBUF_POLICY,
137                 .procname       = "rcvbuf_policy",
138                 .data           = &sctp_rcvbuf_policy,
139                 .maxlen         = sizeof(int),
140                 .mode           = 0644,
141                 .proc_handler   = &proc_dointvec,
142                 .strategy       = &sysctl_intvec
143         },
144         {
145                 .ctl_name       = NET_SCTP_PATH_MAX_RETRANS,
146                 .procname       = "path_max_retrans",
147                 .data           = &sctp_max_retrans_path,
148                 .maxlen         = sizeof(int),
149                 .mode           = 0644,
150                 .proc_handler   = &proc_dointvec_minmax,
151                 .strategy       = &sysctl_intvec,
152                 .extra1         = &one,
153                 .extra2         = &int_max
154         },
155         {
156                 .ctl_name       = NET_SCTP_MAX_INIT_RETRANSMITS,
157                 .procname       = "max_init_retransmits",
158                 .data           = &sctp_max_retrans_init,
159                 .maxlen         = sizeof(int),
160                 .mode           = 0644,
161                 .proc_handler   = &proc_dointvec_minmax,
162                 .strategy       = &sysctl_intvec,
163                 .extra1         = &one,
164                 .extra2         = &int_max
165         },
166         {
167                 .ctl_name       = NET_SCTP_HB_INTERVAL,
168                 .procname       = "hb_interval",
169                 .data           = &sctp_hb_interval,
170                 .maxlen         = sizeof(unsigned int),
171                 .mode           = 0644,
172                 .proc_handler   = &proc_dointvec_minmax,
173                 .strategy       = &sysctl_intvec,
174                 .extra1         = &one,
175                 .extra2         = &timer_max
176         },
177         {
178                 .ctl_name       = NET_SCTP_PRESERVE_ENABLE,
179                 .procname       = "cookie_preserve_enable",
180                 .data           = &sctp_cookie_preserve_enable,
181                 .maxlen         = sizeof(int),
182                 .mode           = 0644,
183                 .proc_handler   = &proc_dointvec,
184                 .strategy       = &sysctl_intvec
185         },
186         {
187                 .ctl_name       = NET_SCTP_RTO_ALPHA,
188                 .procname       = "rto_alpha_exp_divisor",
189                 .data           = &sctp_rto_alpha,
190                 .maxlen         = sizeof(int),
191                 .mode           = 0444,
192                 .proc_handler   = &proc_dointvec,
193                 .strategy       = &sysctl_intvec
194         },
195         {
196                 .ctl_name       = NET_SCTP_RTO_BETA,
197                 .procname       = "rto_beta_exp_divisor",
198                 .data           = &sctp_rto_beta,
199                 .maxlen         = sizeof(int),
200                 .mode           = 0444,
201                 .proc_handler   = &proc_dointvec,
202                 .strategy       = &sysctl_intvec
203         },
204         {
205                 .ctl_name       = NET_SCTP_ADDIP_ENABLE,
206                 .procname       = "addip_enable",
207                 .data           = &sctp_addip_enable,
208                 .maxlen         = sizeof(int),
209                 .mode           = 0644,
210                 .proc_handler   = &proc_dointvec,
211                 .strategy       = &sysctl_intvec
212         },
213         {
214                 .ctl_name       = NET_SCTP_PRSCTP_ENABLE,
215                 .procname       = "prsctp_enable",
216                 .data           = &sctp_prsctp_enable,
217                 .maxlen         = sizeof(int),
218                 .mode           = 0644,
219                 .proc_handler   = &proc_dointvec,
220                 .strategy       = &sysctl_intvec
221         },
222         {
223                 .ctl_name       = NET_SCTP_SACK_TIMEOUT,
224                 .procname       = "sack_timeout",
225                 .data           = &sctp_sack_timeout,
226                 .maxlen         = sizeof(long),
227                 .mode           = 0644,
228                 .proc_handler   = &proc_dointvec_minmax,
229                 .strategy       = &sysctl_intvec,
230                 .extra1         = &sack_timer_min,
231                 .extra2         = &sack_timer_max,
232         },
233         {
234                 .ctl_name       = CTL_UNNUMBERED,
235                 .procname       = "sctp_mem",
236                 .data           = &sysctl_sctp_mem,
237                 .maxlen         = sizeof(sysctl_sctp_mem),
238                 .mode           = 0644,
239                 .proc_handler   = &proc_dointvec,
240         },
241         {
242                 .ctl_name       = CTL_UNNUMBERED,
243                 .procname       = "sctp_rmem",
244                 .data           = &sysctl_sctp_rmem,
245                 .maxlen         = sizeof(sysctl_sctp_rmem),
246                 .mode           = 0644,
247                 .proc_handler   = &proc_dointvec,
248         },
249         {
250                 .ctl_name       = CTL_UNNUMBERED,
251                 .procname       = "sctp_wmem",
252                 .data           = &sysctl_sctp_wmem,
253                 .maxlen         = sizeof(sysctl_sctp_wmem),
254                 .mode           = 0644,
255                 .proc_handler   = &proc_dointvec,
256         },
257         {
258                 .ctl_name       = CTL_UNNUMBERED,
259                 .procname       = "auth_enable",
260                 .data           = &sctp_auth_enable,
261                 .maxlen         = sizeof(int),
262                 .mode           = 0644,
263                 .proc_handler   = &proc_dointvec,
264                 .strategy       = &sysctl_intvec
265         },
266         { .ctl_name = 0 }
267 };
268
269 static ctl_table sctp_net_table[] = {
270         {
271                 .ctl_name       = NET_SCTP,
272                 .procname       = "sctp",
273                 .mode           = 0555,
274                 .child          = sctp_table
275         },
276         { .ctl_name = 0 }
277 };
278
279 static ctl_table sctp_root_table[] = {
280         {
281                 .ctl_name       = CTL_NET,
282                 .procname       = "net",
283                 .mode           = 0555,
284                 .child          = sctp_net_table
285         },
286         { .ctl_name = 0 }
287 };
288
289 static struct ctl_table_header * sctp_sysctl_header;
290
291 /* Sysctl registration.  */
292 void sctp_sysctl_register(void)
293 {
294         sctp_sysctl_header = register_sysctl_table(sctp_root_table);
295 }
296
297 /* Sysctl deregistration.  */
298 void sctp_sysctl_unregister(void)
299 {
300         unregister_sysctl_table(sctp_sysctl_header);
301 }