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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 | static int rwnd_scale_max = 16; |
56 | |
57 | extern int sysctl_sctp_mem[3]; |
58 | extern int sysctl_sctp_rmem[3]; |
59 | extern int sysctl_sctp_wmem[3]; |
60 | |
61 | static ctl_table sctp_table[] = { |
62 | { |
63 | .procname = "rto_initial", |
64 | .data = &sctp_rto_initial, |
65 | .maxlen = sizeof(unsigned int), |
66 | .mode = 0644, |
67 | .proc_handler = proc_dointvec_minmax, |
68 | .extra1 = &one, |
69 | .extra2 = &timer_max |
70 | }, |
71 | { |
72 | .procname = "rto_min", |
73 | .data = &sctp_rto_min, |
74 | .maxlen = sizeof(unsigned int), |
75 | .mode = 0644, |
76 | .proc_handler = proc_dointvec_minmax, |
77 | .extra1 = &one, |
78 | .extra2 = &timer_max |
79 | }, |
80 | { |
81 | .procname = "rto_max", |
82 | .data = &sctp_rto_max, |
83 | .maxlen = sizeof(unsigned int), |
84 | .mode = 0644, |
85 | .proc_handler = proc_dointvec_minmax, |
86 | .extra1 = &one, |
87 | .extra2 = &timer_max |
88 | }, |
89 | { |
90 | .procname = "valid_cookie_life", |
91 | .data = &sctp_valid_cookie_life, |
92 | .maxlen = sizeof(unsigned int), |
93 | .mode = 0644, |
94 | .proc_handler = proc_dointvec_minmax, |
95 | .extra1 = &one, |
96 | .extra2 = &timer_max |
97 | }, |
98 | { |
99 | .procname = "max_burst", |
100 | .data = &sctp_max_burst, |
101 | .maxlen = sizeof(int), |
102 | .mode = 0644, |
103 | .proc_handler = proc_dointvec_minmax, |
104 | .extra1 = &zero, |
105 | .extra2 = &int_max |
106 | }, |
107 | { |
108 | .procname = "association_max_retrans", |
109 | .data = &sctp_max_retrans_association, |
110 | .maxlen = sizeof(int), |
111 | .mode = 0644, |
112 | .proc_handler = proc_dointvec_minmax, |
113 | .extra1 = &one, |
114 | .extra2 = &int_max |
115 | }, |
116 | { |
117 | .procname = "sndbuf_policy", |
118 | .data = &sctp_sndbuf_policy, |
119 | .maxlen = sizeof(int), |
120 | .mode = 0644, |
121 | .proc_handler = proc_dointvec, |
122 | }, |
123 | { |
124 | .procname = "rcvbuf_policy", |
125 | .data = &sctp_rcvbuf_policy, |
126 | .maxlen = sizeof(int), |
127 | .mode = 0644, |
128 | .proc_handler = proc_dointvec, |
129 | }, |
130 | { |
131 | .procname = "path_max_retrans", |
132 | .data = &sctp_max_retrans_path, |
133 | .maxlen = sizeof(int), |
134 | .mode = 0644, |
135 | .proc_handler = proc_dointvec_minmax, |
136 | .extra1 = &one, |
137 | .extra2 = &int_max |
138 | }, |
139 | { |
140 | .procname = "max_init_retransmits", |
141 | .data = &sctp_max_retrans_init, |
142 | .maxlen = sizeof(int), |
143 | .mode = 0644, |
144 | .proc_handler = proc_dointvec_minmax, |
145 | .extra1 = &one, |
146 | .extra2 = &int_max |
147 | }, |
148 | { |
149 | .procname = "hb_interval", |
150 | .data = &sctp_hb_interval, |
151 | .maxlen = sizeof(unsigned int), |
152 | .mode = 0644, |
153 | .proc_handler = proc_dointvec_minmax, |
154 | .extra1 = &one, |
155 | .extra2 = &timer_max |
156 | }, |
157 | { |
158 | .procname = "cookie_preserve_enable", |
159 | .data = &sctp_cookie_preserve_enable, |
160 | .maxlen = sizeof(int), |
161 | .mode = 0644, |
162 | .proc_handler = proc_dointvec, |
163 | }, |
164 | { |
165 | .procname = "rto_alpha_exp_divisor", |
166 | .data = &sctp_rto_alpha, |
167 | .maxlen = sizeof(int), |
168 | .mode = 0444, |
169 | .proc_handler = proc_dointvec, |
170 | }, |
171 | { |
172 | .procname = "rto_beta_exp_divisor", |
173 | .data = &sctp_rto_beta, |
174 | .maxlen = sizeof(int), |
175 | .mode = 0444, |
176 | .proc_handler = proc_dointvec, |
177 | }, |
178 | { |
179 | .procname = "addip_enable", |
180 | .data = &sctp_addip_enable, |
181 | .maxlen = sizeof(int), |
182 | .mode = 0644, |
183 | .proc_handler = proc_dointvec, |
184 | }, |
185 | { |
186 | .procname = "prsctp_enable", |
187 | .data = &sctp_prsctp_enable, |
188 | .maxlen = sizeof(int), |
189 | .mode = 0644, |
190 | .proc_handler = proc_dointvec, |
191 | }, |
192 | { |
193 | .procname = "sack_timeout", |
194 | .data = &sctp_sack_timeout, |
195 | .maxlen = sizeof(int), |
196 | .mode = 0644, |
197 | .proc_handler = proc_dointvec_minmax, |
198 | .extra1 = &sack_timer_min, |
199 | .extra2 = &sack_timer_max, |
200 | }, |
201 | { |
202 | .procname = "sctp_mem", |
203 | .data = &sysctl_sctp_mem, |
204 | .maxlen = sizeof(sysctl_sctp_mem), |
205 | .mode = 0644, |
206 | .proc_handler = proc_dointvec, |
207 | }, |
208 | { |
209 | .procname = "sctp_rmem", |
210 | .data = &sysctl_sctp_rmem, |
211 | .maxlen = sizeof(sysctl_sctp_rmem), |
212 | .mode = 0644, |
213 | .proc_handler = proc_dointvec, |
214 | }, |
215 | { |
216 | .procname = "sctp_wmem", |
217 | .data = &sysctl_sctp_wmem, |
218 | .maxlen = sizeof(sysctl_sctp_wmem), |
219 | .mode = 0644, |
220 | .proc_handler = proc_dointvec, |
221 | }, |
222 | { |
223 | .procname = "auth_enable", |
224 | .data = &sctp_auth_enable, |
225 | .maxlen = sizeof(int), |
226 | .mode = 0644, |
227 | .proc_handler = proc_dointvec, |
228 | }, |
229 | { |
230 | .procname = "addip_noauth_enable", |
231 | .data = &sctp_addip_noauth, |
232 | .maxlen = sizeof(int), |
233 | .mode = 0644, |
234 | .proc_handler = proc_dointvec, |
235 | }, |
236 | { |
237 | .procname = "addr_scope_policy", |
238 | .data = &sctp_scope_policy, |
239 | .maxlen = sizeof(int), |
240 | .mode = 0644, |
241 | .proc_handler = proc_dointvec_minmax, |
242 | .extra1 = &zero, |
243 | .extra2 = &addr_scope_max, |
244 | }, |
245 | { |
246 | .procname = "rwnd_update_shift", |
247 | .data = &sctp_rwnd_upd_shift, |
248 | .maxlen = sizeof(int), |
249 | .mode = 0644, |
250 | .proc_handler = &proc_dointvec_minmax, |
251 | .extra1 = &one, |
252 | .extra2 = &rwnd_scale_max, |
253 | }, |
254 | |
255 | { /* sentinel */ } |
256 | }; |
257 | |
258 | static struct ctl_path sctp_path[] = { |
259 | { .procname = "net", }, |
260 | { .procname = "sctp", }, |
261 | { } |
262 | }; |
263 | |
264 | static struct ctl_table_header * sctp_sysctl_header; |
265 | |
266 | /* Sysctl registration. */ |
267 | void sctp_sysctl_register(void) |
268 | { |
269 | sctp_sysctl_header = register_sysctl_paths(sctp_path, sctp_table); |
270 | } |
271 | |
272 | /* Sysctl deregistration. */ |
273 | void sctp_sysctl_unregister(void) |
274 | { |
275 | unregister_sysctl_table(sctp_sysctl_header); |
276 | } |
277 |
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