sctp: remove dup code in net/sctp/output.c
[linux-2.6.git] / net / sctp / sysctl.c
1 /* SCTP kernel implementation
2  * (C) Copyright IBM Corp. 2002, 2004
3  * Copyright (c) 2002 Intel Corp.
4  *
5  * This file is part of the SCTP kernel implementation
6  *
7  * Sysctl related interfaces for SCTP.
8  *
9  * This SCTP 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  * This SCTP 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 int sack_timer_min = 1;
53 static int sack_timer_max = 500;
54 static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
55
56 extern int sysctl_sctp_mem[3];
57 extern int sysctl_sctp_rmem[3];
58 extern int sysctl_sctp_wmem[3];
59
60 static ctl_table sctp_table[] = {
61         {
62                 .ctl_name       = NET_SCTP_RTO_INITIAL,
63                 .procname       = "rto_initial",
64                 .data           = &sctp_rto_initial,
65                 .maxlen         = sizeof(unsigned int),
66                 .mode           = 0644,
67                 .proc_handler   = proc_dointvec_minmax,
68                 .strategy       = sysctl_intvec,
69                 .extra1         = &one,
70                 .extra2         = &timer_max
71         },
72         {
73                 .ctl_name       = NET_SCTP_RTO_MIN,
74                 .procname       = "rto_min",
75                 .data           = &sctp_rto_min,
76                 .maxlen         = sizeof(unsigned int),
77                 .mode           = 0644,
78                 .proc_handler   = proc_dointvec_minmax,
79                 .strategy       = sysctl_intvec,
80                 .extra1         = &one,
81                 .extra2         = &timer_max
82         },
83         {
84                 .ctl_name       = NET_SCTP_RTO_MAX,
85                 .procname       = "rto_max",
86                 .data           = &sctp_rto_max,
87                 .maxlen         = sizeof(unsigned int),
88                 .mode           = 0644,
89                 .proc_handler   = proc_dointvec_minmax,
90                 .strategy       = sysctl_intvec,
91                 .extra1         = &one,
92                 .extra2         = &timer_max
93         },
94         {
95                 .ctl_name       = NET_SCTP_VALID_COOKIE_LIFE,
96                 .procname       = "valid_cookie_life",
97                 .data           = &sctp_valid_cookie_life,
98                 .maxlen         = sizeof(unsigned int),
99                 .mode           = 0644,
100                 .proc_handler   = proc_dointvec_minmax,
101                 .strategy       = sysctl_intvec,
102                 .extra1         = &one,
103                 .extra2         = &timer_max
104         },
105         {
106                 .ctl_name       = NET_SCTP_MAX_BURST,
107                 .procname       = "max_burst",
108                 .data           = &sctp_max_burst,
109                 .maxlen         = sizeof(int),
110                 .mode           = 0644,
111                 .proc_handler   = proc_dointvec_minmax,
112                 .strategy       = sysctl_intvec,
113                 .extra1         = &zero,
114                 .extra2         = &int_max
115         },
116         {
117                 .ctl_name       = NET_SCTP_ASSOCIATION_MAX_RETRANS,
118                 .procname       = "association_max_retrans",
119                 .data           = &sctp_max_retrans_association,
120                 .maxlen         = sizeof(int),
121                 .mode           = 0644,
122                 .proc_handler   = proc_dointvec_minmax,
123                 .strategy       = sysctl_intvec,
124                 .extra1         = &one,
125                 .extra2         = &int_max
126         },
127         {
128                 .ctl_name       = NET_SCTP_SNDBUF_POLICY,
129                 .procname       = "sndbuf_policy",
130                 .data           = &sctp_sndbuf_policy,
131                 .maxlen         = sizeof(int),
132                 .mode           = 0644,
133                 .proc_handler   = proc_dointvec,
134                 .strategy       = sysctl_intvec
135         },
136         {
137                 .ctl_name       = NET_SCTP_RCVBUF_POLICY,
138                 .procname       = "rcvbuf_policy",
139                 .data           = &sctp_rcvbuf_policy,
140                 .maxlen         = sizeof(int),
141                 .mode           = 0644,
142                 .proc_handler   = proc_dointvec,
143                 .strategy       = sysctl_intvec
144         },
145         {
146                 .ctl_name       = NET_SCTP_PATH_MAX_RETRANS,
147                 .procname       = "path_max_retrans",
148                 .data           = &sctp_max_retrans_path,
149                 .maxlen         = sizeof(int),
150                 .mode           = 0644,
151                 .proc_handler   = proc_dointvec_minmax,
152                 .strategy       = sysctl_intvec,
153                 .extra1         = &one,
154                 .extra2         = &int_max
155         },
156         {
157                 .ctl_name       = NET_SCTP_MAX_INIT_RETRANSMITS,
158                 .procname       = "max_init_retransmits",
159                 .data           = &sctp_max_retrans_init,
160                 .maxlen         = sizeof(int),
161                 .mode           = 0644,
162                 .proc_handler   = proc_dointvec_minmax,
163                 .strategy       = sysctl_intvec,
164                 .extra1         = &one,
165                 .extra2         = &int_max
166         },
167         {
168                 .ctl_name       = NET_SCTP_HB_INTERVAL,
169                 .procname       = "hb_interval",
170                 .data           = &sctp_hb_interval,
171                 .maxlen         = sizeof(unsigned int),
172                 .mode           = 0644,
173                 .proc_handler   = proc_dointvec_minmax,
174                 .strategy       = sysctl_intvec,
175                 .extra1         = &one,
176                 .extra2         = &timer_max
177         },
178         {
179                 .ctl_name       = NET_SCTP_PRESERVE_ENABLE,
180                 .procname       = "cookie_preserve_enable",
181                 .data           = &sctp_cookie_preserve_enable,
182                 .maxlen         = sizeof(int),
183                 .mode           = 0644,
184                 .proc_handler   = proc_dointvec,
185                 .strategy       = sysctl_intvec
186         },
187         {
188                 .ctl_name       = NET_SCTP_RTO_ALPHA,
189                 .procname       = "rto_alpha_exp_divisor",
190                 .data           = &sctp_rto_alpha,
191                 .maxlen         = sizeof(int),
192                 .mode           = 0444,
193                 .proc_handler   = proc_dointvec,
194                 .strategy       = sysctl_intvec
195         },
196         {
197                 .ctl_name       = NET_SCTP_RTO_BETA,
198                 .procname       = "rto_beta_exp_divisor",
199                 .data           = &sctp_rto_beta,
200                 .maxlen         = sizeof(int),
201                 .mode           = 0444,
202                 .proc_handler   = proc_dointvec,
203                 .strategy       = sysctl_intvec
204         },
205         {
206                 .ctl_name       = NET_SCTP_ADDIP_ENABLE,
207                 .procname       = "addip_enable",
208                 .data           = &sctp_addip_enable,
209                 .maxlen         = sizeof(int),
210                 .mode           = 0644,
211                 .proc_handler   = proc_dointvec,
212                 .strategy       = sysctl_intvec
213         },
214         {
215                 .ctl_name       = NET_SCTP_PRSCTP_ENABLE,
216                 .procname       = "prsctp_enable",
217                 .data           = &sctp_prsctp_enable,
218                 .maxlen         = sizeof(int),
219                 .mode           = 0644,
220                 .proc_handler   = proc_dointvec,
221                 .strategy       = sysctl_intvec
222         },
223         {
224                 .ctl_name       = NET_SCTP_SACK_TIMEOUT,
225                 .procname       = "sack_timeout",
226                 .data           = &sctp_sack_timeout,
227                 .maxlen         = sizeof(int),
228                 .mode           = 0644,
229                 .proc_handler   = proc_dointvec_minmax,
230                 .strategy       = sysctl_intvec,
231                 .extra1         = &sack_timer_min,
232                 .extra2         = &sack_timer_max,
233         },
234         {
235                 .ctl_name       = CTL_UNNUMBERED,
236                 .procname       = "sctp_mem",
237                 .data           = &sysctl_sctp_mem,
238                 .maxlen         = sizeof(sysctl_sctp_mem),
239                 .mode           = 0644,
240                 .proc_handler   = proc_dointvec,
241         },
242         {
243                 .ctl_name       = CTL_UNNUMBERED,
244                 .procname       = "sctp_rmem",
245                 .data           = &sysctl_sctp_rmem,
246                 .maxlen         = sizeof(sysctl_sctp_rmem),
247                 .mode           = 0644,
248                 .proc_handler   = proc_dointvec,
249         },
250         {
251                 .ctl_name       = CTL_UNNUMBERED,
252                 .procname       = "sctp_wmem",
253                 .data           = &sysctl_sctp_wmem,
254                 .maxlen         = sizeof(sysctl_sctp_wmem),
255                 .mode           = 0644,
256                 .proc_handler   = proc_dointvec,
257         },
258         {
259                 .ctl_name       = CTL_UNNUMBERED,
260                 .procname       = "auth_enable",
261                 .data           = &sctp_auth_enable,
262                 .maxlen         = sizeof(int),
263                 .mode           = 0644,
264                 .proc_handler   = proc_dointvec,
265                 .strategy       = sysctl_intvec
266         },
267         {
268                 .ctl_name       = CTL_UNNUMBERED,
269                 .procname       = "addip_noauth_enable",
270                 .data           = &sctp_addip_noauth,
271                 .maxlen         = sizeof(int),
272                 .mode           = 0644,
273                 .proc_handler   = proc_dointvec,
274                 .strategy       = sysctl_intvec
275         },
276         {
277                 .ctl_name       = CTL_UNNUMBERED,
278                 .procname       = "addr_scope_policy",
279                 .data           = &sctp_scope_policy,
280                 .maxlen         = sizeof(int),
281                 .mode           = 0644,
282                 .proc_handler   = &proc_dointvec_minmax,
283                 .strategy       = &sysctl_intvec,
284                 .extra1         = &zero,
285                 .extra2         = &addr_scope_max,
286         },
287         { .ctl_name = 0 }
288 };
289
290 static struct ctl_path sctp_path[] = {
291         { .procname = "net", .ctl_name = CTL_NET, },
292         { .procname = "sctp", .ctl_name = NET_SCTP, },
293         { }
294 };
295
296 static struct ctl_table_header * sctp_sysctl_header;
297
298 /* Sysctl registration.  */
299 void sctp_sysctl_register(void)
300 {
301         sctp_sysctl_header = register_sysctl_paths(sctp_path, sctp_table);
302 }
303
304 /* Sysctl deregistration.  */
305 void sctp_sysctl_unregister(void)
306 {
307         unregister_sysctl_table(sctp_sysctl_header);
308 }