Commit | Line | Data |
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60c778b2 | 1 | /* SCTP kernel implementation |
1da177e4 LT |
2 | * (C) Copyright IBM Corp. 2002, 2004 |
3 | * Copyright (c) 2002 Intel Corp. | |
4 | * | |
60c778b2 | 5 | * This file is part of the SCTP kernel implementation |
1da177e4 LT |
6 | * |
7 | * Sysctl related interfaces for SCTP. | |
8 | * | |
60c778b2 | 9 | * This SCTP implementation is free software; |
1da177e4 LT |
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 | * | |
60c778b2 | 15 | * This SCTP implementation is distributed in the hope that it |
1da177e4 LT |
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 | |
4b2f13a2 JK |
22 | * along with GNU CC; see the file COPYING. If not, see |
23 | * <http://www.gnu.org/licenses/>. | |
1da177e4 LT |
24 | * |
25 | * Please send any bug reports or fixes you make to the | |
26 | * email address(es): | |
91705c61 | 27 | * lksctp developers <linux-sctp@vger.kernel.org> |
1da177e4 | 28 | * |
1da177e4 LT |
29 | * Written or modified by: |
30 | * Mingqin Liu <liuming@us.ibm.com> | |
31 | * Jon Grimm <jgrimm@us.ibm.com> | |
32 | * Ardelle Fan <ardelle.fan@intel.com> | |
33 | * Ryan Layer <rmlayer@us.ibm.com> | |
34 | * Sridhar Samudrala <sri@us.ibm.com> | |
1da177e4 LT |
35 | */ |
36 | ||
b58537a1 DB |
37 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
38 | ||
1da177e4 | 39 | #include <net/sctp/structs.h> |
8c5955d8 | 40 | #include <net/sctp/sctp.h> |
1da177e4 LT |
41 | #include <linux/sysctl.h> |
42 | ||
3fd091e7 VY |
43 | static int zero = 0; |
44 | static int one = 1; | |
45 | static int timer_max = 86400000; /* ms in one day */ | |
46 | static int int_max = INT_MAX; | |
d48e074d JMG |
47 | static int sack_timer_min = 1; |
48 | static int sack_timer_max = 500; | |
72388433 | 49 | static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */ |
90f2f531 | 50 | static int rwnd_scale_max = 16; |
b58537a1 DB |
51 | static int rto_alpha_min = 0; |
52 | static int rto_beta_min = 0; | |
53 | static int rto_alpha_max = 1000; | |
54 | static int rto_beta_max = 1000; | |
55 | ||
2692ba61 XW |
56 | static unsigned long max_autoclose_min = 0; |
57 | static unsigned long max_autoclose_max = | |
58 | (MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX) | |
59 | ? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ; | |
1da177e4 | 60 | |
8d987e5c | 61 | extern long sysctl_sctp_mem[3]; |
007e3936 VY |
62 | extern int sysctl_sctp_rmem[3]; |
63 | extern int sysctl_sctp_wmem[3]; | |
4d93df0a | 64 | |
b486b228 | 65 | static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, |
3c68198e | 66 | void __user *buffer, size_t *lenp, |
3c68198e | 67 | loff_t *ppos); |
4f3fdf3b | 68 | static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, |
69 | void __user *buffer, size_t *lenp, | |
70 | loff_t *ppos); | |
71 | static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, | |
3c68198e | 72 | void __user *buffer, size_t *lenp, |
3c68198e | 73 | loff_t *ppos); |
b58537a1 DB |
74 | static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, |
75 | void __user *buffer, size_t *lenp, | |
76 | loff_t *ppos); | |
b14878cc VY |
77 | static int proc_sctp_do_auth(struct ctl_table *ctl, int write, |
78 | void __user *buffer, size_t *lenp, | |
79 | loff_t *ppos); | |
4f3fdf3b | 80 | |
fe2c6338 | 81 | static struct ctl_table sctp_table[] = { |
e1fc3b14 EB |
82 | { |
83 | .procname = "sctp_mem", | |
84 | .data = &sysctl_sctp_mem, | |
85 | .maxlen = sizeof(sysctl_sctp_mem), | |
86 | .mode = 0644, | |
87 | .proc_handler = proc_doulongvec_minmax | |
88 | }, | |
89 | { | |
90 | .procname = "sctp_rmem", | |
91 | .data = &sysctl_sctp_rmem, | |
92 | .maxlen = sizeof(sysctl_sctp_rmem), | |
93 | .mode = 0644, | |
94 | .proc_handler = proc_dointvec, | |
95 | }, | |
96 | { | |
97 | .procname = "sctp_wmem", | |
98 | .data = &sysctl_sctp_wmem, | |
99 | .maxlen = sizeof(sysctl_sctp_wmem), | |
100 | .mode = 0644, | |
101 | .proc_handler = proc_dointvec, | |
102 | }, | |
103 | ||
104 | { /* sentinel */ } | |
105 | }; | |
106 | ||
fe2c6338 | 107 | static struct ctl_table sctp_net_table[] = { |
1da177e4 | 108 | { |
1da177e4 | 109 | .procname = "rto_initial", |
e1fc3b14 | 110 | .data = &init_net.sctp.rto_initial, |
3fd091e7 | 111 | .maxlen = sizeof(unsigned int), |
1da177e4 | 112 | .mode = 0644, |
6d9f239a | 113 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
114 | .extra1 = &one, |
115 | .extra2 = &timer_max | |
1da177e4 LT |
116 | }, |
117 | { | |
1da177e4 | 118 | .procname = "rto_min", |
e1fc3b14 | 119 | .data = &init_net.sctp.rto_min, |
3fd091e7 | 120 | .maxlen = sizeof(unsigned int), |
1da177e4 | 121 | .mode = 0644, |
4f3fdf3b | 122 | .proc_handler = proc_sctp_do_rto_min, |
3fd091e7 | 123 | .extra1 = &one, |
4f3fdf3b | 124 | .extra2 = &init_net.sctp.rto_max |
1da177e4 LT |
125 | }, |
126 | { | |
1da177e4 | 127 | .procname = "rto_max", |
e1fc3b14 | 128 | .data = &init_net.sctp.rto_max, |
3fd091e7 | 129 | .maxlen = sizeof(unsigned int), |
1da177e4 | 130 | .mode = 0644, |
4f3fdf3b | 131 | .proc_handler = proc_sctp_do_rto_max, |
132 | .extra1 = &init_net.sctp.rto_min, | |
3fd091e7 | 133 | .extra2 = &timer_max |
1da177e4 LT |
134 | }, |
135 | { | |
e1fc3b14 EB |
136 | .procname = "rto_alpha_exp_divisor", |
137 | .data = &init_net.sctp.rto_alpha, | |
138 | .maxlen = sizeof(int), | |
b58537a1 DB |
139 | .mode = 0644, |
140 | .proc_handler = proc_sctp_do_alpha_beta, | |
141 | .extra1 = &rto_alpha_min, | |
142 | .extra2 = &rto_alpha_max, | |
e1fc3b14 EB |
143 | }, |
144 | { | |
145 | .procname = "rto_beta_exp_divisor", | |
146 | .data = &init_net.sctp.rto_beta, | |
147 | .maxlen = sizeof(int), | |
b58537a1 DB |
148 | .mode = 0644, |
149 | .proc_handler = proc_sctp_do_alpha_beta, | |
150 | .extra1 = &rto_beta_min, | |
151 | .extra2 = &rto_beta_max, | |
1da177e4 LT |
152 | }, |
153 | { | |
1da177e4 | 154 | .procname = "max_burst", |
e1fc3b14 | 155 | .data = &init_net.sctp.max_burst, |
1da177e4 LT |
156 | .maxlen = sizeof(int), |
157 | .mode = 0644, | |
6d9f239a | 158 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
159 | .extra1 = &zero, |
160 | .extra2 = &int_max | |
1da177e4 LT |
161 | }, |
162 | { | |
e1fc3b14 EB |
163 | .procname = "cookie_preserve_enable", |
164 | .data = &init_net.sctp.cookie_preserve_enable, | |
1da177e4 LT |
165 | .maxlen = sizeof(int), |
166 | .mode = 0644, | |
e1fc3b14 EB |
167 | .proc_handler = proc_dointvec, |
168 | }, | |
3c68198e NH |
169 | { |
170 | .procname = "cookie_hmac_alg", | |
22a1f514 | 171 | .data = &init_net.sctp.sctp_hmac_alg, |
3c68198e NH |
172 | .maxlen = 8, |
173 | .mode = 0644, | |
174 | .proc_handler = proc_sctp_do_hmac_alg, | |
175 | }, | |
e1fc3b14 EB |
176 | { |
177 | .procname = "valid_cookie_life", | |
178 | .data = &init_net.sctp.valid_cookie_life, | |
179 | .maxlen = sizeof(unsigned int), | |
180 | .mode = 0644, | |
6d9f239a | 181 | .proc_handler = proc_dointvec_minmax, |
e1fc3b14 EB |
182 | .extra1 = &one, |
183 | .extra2 = &timer_max | |
1da177e4 | 184 | }, |
4eb701df | 185 | { |
e1fc3b14 EB |
186 | .procname = "sack_timeout", |
187 | .data = &init_net.sctp.sack_timeout, | |
4eb701df NH |
188 | .maxlen = sizeof(int), |
189 | .mode = 0644, | |
e1fc3b14 EB |
190 | .proc_handler = proc_dointvec_minmax, |
191 | .extra1 = &sack_timer_min, | |
192 | .extra2 = &sack_timer_max, | |
4eb701df | 193 | }, |
049b3ff5 | 194 | { |
e1fc3b14 EB |
195 | .procname = "hb_interval", |
196 | .data = &init_net.sctp.hb_interval, | |
197 | .maxlen = sizeof(unsigned int), | |
049b3ff5 | 198 | .mode = 0644, |
e1fc3b14 EB |
199 | .proc_handler = proc_dointvec_minmax, |
200 | .extra1 = &one, | |
201 | .extra2 = &timer_max | |
049b3ff5 | 202 | }, |
1da177e4 | 203 | { |
e1fc3b14 EB |
204 | .procname = "association_max_retrans", |
205 | .data = &init_net.sctp.max_retrans_association, | |
1da177e4 LT |
206 | .maxlen = sizeof(int), |
207 | .mode = 0644, | |
6d9f239a | 208 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
209 | .extra1 = &one, |
210 | .extra2 = &int_max | |
1da177e4 | 211 | }, |
5aa93bcf | 212 | { |
e1fc3b14 EB |
213 | .procname = "path_max_retrans", |
214 | .data = &init_net.sctp.max_retrans_path, | |
5aa93bcf NH |
215 | .maxlen = sizeof(int), |
216 | .mode = 0644, | |
217 | .proc_handler = proc_dointvec_minmax, | |
e1fc3b14 | 218 | .extra1 = &one, |
5aa93bcf NH |
219 | .extra2 = &int_max |
220 | }, | |
1da177e4 | 221 | { |
1da177e4 | 222 | .procname = "max_init_retransmits", |
e1fc3b14 | 223 | .data = &init_net.sctp.max_retrans_init, |
1da177e4 LT |
224 | .maxlen = sizeof(int), |
225 | .mode = 0644, | |
6d9f239a | 226 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
227 | .extra1 = &one, |
228 | .extra2 = &int_max | |
1da177e4 LT |
229 | }, |
230 | { | |
e1fc3b14 EB |
231 | .procname = "pf_retrans", |
232 | .data = &init_net.sctp.pf_retrans, | |
233 | .maxlen = sizeof(int), | |
1da177e4 | 234 | .mode = 0644, |
6d9f239a | 235 | .proc_handler = proc_dointvec_minmax, |
e1fc3b14 EB |
236 | .extra1 = &zero, |
237 | .extra2 = &int_max | |
1da177e4 LT |
238 | }, |
239 | { | |
e1fc3b14 EB |
240 | .procname = "sndbuf_policy", |
241 | .data = &init_net.sctp.sndbuf_policy, | |
8116ffad | 242 | .maxlen = sizeof(int), |
1da177e4 | 243 | .mode = 0644, |
6d9f239a | 244 | .proc_handler = proc_dointvec, |
1da177e4 LT |
245 | }, |
246 | { | |
e1fc3b14 EB |
247 | .procname = "rcvbuf_policy", |
248 | .data = &init_net.sctp.rcvbuf_policy, | |
dd51be0f MH |
249 | .maxlen = sizeof(int), |
250 | .mode = 0644, | |
251 | .proc_handler = proc_dointvec, | |
252 | }, | |
253 | { | |
254 | .procname = "default_auto_asconf", | |
e1fc3b14 | 255 | .data = &init_net.sctp.default_auto_asconf, |
1da177e4 LT |
256 | .maxlen = sizeof(int), |
257 | .mode = 0644, | |
6d9f239a | 258 | .proc_handler = proc_dointvec, |
1da177e4 LT |
259 | }, |
260 | { | |
e1fc3b14 EB |
261 | .procname = "addip_enable", |
262 | .data = &init_net.sctp.addip_enable, | |
1da177e4 LT |
263 | .maxlen = sizeof(int), |
264 | .mode = 0644, | |
6d9f239a | 265 | .proc_handler = proc_dointvec, |
1da177e4 | 266 | }, |
2f85a429 | 267 | { |
e1fc3b14 EB |
268 | .procname = "addip_noauth_enable", |
269 | .data = &init_net.sctp.addip_noauth, | |
d48e074d | 270 | .maxlen = sizeof(int), |
2f85a429 | 271 | .mode = 0644, |
6d9f239a | 272 | .proc_handler = proc_dointvec, |
4d93df0a NH |
273 | }, |
274 | { | |
e1fc3b14 EB |
275 | .procname = "prsctp_enable", |
276 | .data = &init_net.sctp.prsctp_enable, | |
a29a5bd4 VY |
277 | .maxlen = sizeof(int), |
278 | .mode = 0644, | |
6d9f239a | 279 | .proc_handler = proc_dointvec, |
a29a5bd4 | 280 | }, |
73d9c4fd | 281 | { |
e1fc3b14 EB |
282 | .procname = "auth_enable", |
283 | .data = &init_net.sctp.auth_enable, | |
73d9c4fd VY |
284 | .maxlen = sizeof(int), |
285 | .mode = 0644, | |
b14878cc | 286 | .proc_handler = proc_sctp_do_auth, |
73d9c4fd | 287 | }, |
72388433 | 288 | { |
72388433 | 289 | .procname = "addr_scope_policy", |
e1fc3b14 | 290 | .data = &init_net.sctp.scope_policy, |
72388433 BD |
291 | .maxlen = sizeof(int), |
292 | .mode = 0644, | |
6d456111 | 293 | .proc_handler = proc_dointvec_minmax, |
72388433 BD |
294 | .extra1 = &zero, |
295 | .extra2 = &addr_scope_max, | |
296 | }, | |
90f2f531 | 297 | { |
90f2f531 | 298 | .procname = "rwnd_update_shift", |
e1fc3b14 | 299 | .data = &init_net.sctp.rwnd_upd_shift, |
90f2f531 VY |
300 | .maxlen = sizeof(int), |
301 | .mode = 0644, | |
302 | .proc_handler = &proc_dointvec_minmax, | |
90f2f531 VY |
303 | .extra1 = &one, |
304 | .extra2 = &rwnd_scale_max, | |
305 | }, | |
2692ba61 XW |
306 | { |
307 | .procname = "max_autoclose", | |
e1fc3b14 | 308 | .data = &init_net.sctp.max_autoclose, |
2692ba61 XW |
309 | .maxlen = sizeof(unsigned long), |
310 | .mode = 0644, | |
311 | .proc_handler = &proc_doulongvec_minmax, | |
312 | .extra1 = &max_autoclose_min, | |
313 | .extra2 = &max_autoclose_max, | |
314 | }, | |
71acc0dd | 315 | |
d7fc02c7 | 316 | { /* sentinel */ } |
1da177e4 LT |
317 | }; |
318 | ||
b486b228 | 319 | static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, |
3c68198e NH |
320 | void __user *buffer, size_t *lenp, |
321 | loff_t *ppos) | |
322 | { | |
323 | struct net *net = current->nsproxy->net_ns; | |
fe2c6338 | 324 | struct ctl_table tbl; |
ff5e92c1 | 325 | bool changed = false; |
3c68198e | 326 | char *none = "none"; |
ff5e92c1 DB |
327 | char tmp[8]; |
328 | int ret; | |
3c68198e NH |
329 | |
330 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
331 | ||
332 | if (write) { | |
333 | tbl.data = tmp; | |
ff5e92c1 | 334 | tbl.maxlen = sizeof(tmp); |
3c68198e NH |
335 | } else { |
336 | tbl.data = net->sctp.sctp_hmac_alg ? : none; | |
337 | tbl.maxlen = strlen(tbl.data); | |
338 | } | |
3c68198e | 339 | |
ff5e92c1 DB |
340 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
341 | if (write && ret == 0) { | |
3c68198e NH |
342 | #ifdef CONFIG_CRYPTO_MD5 |
343 | if (!strncmp(tmp, "md5", 3)) { | |
344 | net->sctp.sctp_hmac_alg = "md5"; | |
ff5e92c1 | 345 | changed = true; |
3c68198e NH |
346 | } |
347 | #endif | |
348 | #ifdef CONFIG_CRYPTO_SHA1 | |
349 | if (!strncmp(tmp, "sha1", 4)) { | |
350 | net->sctp.sctp_hmac_alg = "sha1"; | |
ff5e92c1 | 351 | changed = true; |
3c68198e NH |
352 | } |
353 | #endif | |
354 | if (!strncmp(tmp, "none", 4)) { | |
355 | net->sctp.sctp_hmac_alg = NULL; | |
ff5e92c1 | 356 | changed = true; |
3c68198e | 357 | } |
3c68198e NH |
358 | if (!changed) |
359 | ret = -EINVAL; | |
360 | } | |
361 | ||
362 | return ret; | |
363 | } | |
364 | ||
4f3fdf3b | 365 | static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, |
366 | void __user *buffer, size_t *lenp, | |
367 | loff_t *ppos) | |
368 | { | |
369 | struct net *net = current->nsproxy->net_ns; | |
4f3fdf3b | 370 | unsigned int min = *(unsigned int *) ctl->extra1; |
371 | unsigned int max = *(unsigned int *) ctl->extra2; | |
ff5e92c1 DB |
372 | struct ctl_table tbl; |
373 | int ret, new_value; | |
4f3fdf3b | 374 | |
375 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
376 | tbl.maxlen = sizeof(unsigned int); | |
377 | ||
378 | if (write) | |
379 | tbl.data = &new_value; | |
380 | else | |
381 | tbl.data = &net->sctp.rto_min; | |
ff5e92c1 | 382 | |
4f3fdf3b | 383 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); |
ff5e92c1 DB |
384 | if (write && ret == 0) { |
385 | if (new_value > max || new_value < min) | |
4f3fdf3b | 386 | return -EINVAL; |
ff5e92c1 | 387 | |
4f3fdf3b | 388 | net->sctp.rto_min = new_value; |
389 | } | |
ff5e92c1 | 390 | |
4f3fdf3b | 391 | return ret; |
392 | } | |
393 | ||
394 | static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, | |
395 | void __user *buffer, size_t *lenp, | |
396 | loff_t *ppos) | |
397 | { | |
398 | struct net *net = current->nsproxy->net_ns; | |
4f3fdf3b | 399 | unsigned int min = *(unsigned int *) ctl->extra1; |
400 | unsigned int max = *(unsigned int *) ctl->extra2; | |
ff5e92c1 DB |
401 | struct ctl_table tbl; |
402 | int ret, new_value; | |
4f3fdf3b | 403 | |
404 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
405 | tbl.maxlen = sizeof(unsigned int); | |
406 | ||
407 | if (write) | |
408 | tbl.data = &new_value; | |
409 | else | |
410 | tbl.data = &net->sctp.rto_max; | |
ff5e92c1 | 411 | |
4f3fdf3b | 412 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); |
ff5e92c1 DB |
413 | if (write && ret == 0) { |
414 | if (new_value > max || new_value < min) | |
4f3fdf3b | 415 | return -EINVAL; |
ff5e92c1 | 416 | |
4f3fdf3b | 417 | net->sctp.rto_max = new_value; |
418 | } | |
ff5e92c1 | 419 | |
4f3fdf3b | 420 | return ret; |
421 | } | |
422 | ||
b58537a1 DB |
423 | static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, |
424 | void __user *buffer, size_t *lenp, | |
425 | loff_t *ppos) | |
426 | { | |
eaea2da7 DB |
427 | if (write) |
428 | pr_warn_once("Changing rto_alpha or rto_beta may lead to " | |
429 | "suboptimal rtt/srtt estimations!\n"); | |
b58537a1 DB |
430 | |
431 | return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); | |
432 | } | |
433 | ||
b14878cc VY |
434 | static int proc_sctp_do_auth(struct ctl_table *ctl, int write, |
435 | void __user *buffer, size_t *lenp, | |
436 | loff_t *ppos) | |
437 | { | |
438 | struct net *net = current->nsproxy->net_ns; | |
439 | struct ctl_table tbl; | |
440 | int new_value, ret; | |
441 | ||
442 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
443 | tbl.maxlen = sizeof(unsigned int); | |
444 | ||
445 | if (write) | |
446 | tbl.data = &new_value; | |
447 | else | |
448 | tbl.data = &net->sctp.auth_enable; | |
449 | ||
450 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); | |
24599e61 | 451 | if (write && ret == 0) { |
b14878cc VY |
452 | struct sock *sk = net->sctp.ctl_sock; |
453 | ||
454 | net->sctp.auth_enable = new_value; | |
455 | /* Update the value in the control socket */ | |
456 | lock_sock(sk); | |
457 | sctp_sk(sk)->ep->auth_enable = new_value; | |
458 | release_sock(sk); | |
459 | } | |
460 | ||
461 | return ret; | |
462 | } | |
463 | ||
ebb7e95d EB |
464 | int sctp_sysctl_net_register(struct net *net) |
465 | { | |
eb9f3705 | 466 | struct ctl_table *table; |
467 | int i; | |
ebb7e95d | 468 | |
eb9f3705 | 469 | table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL); |
470 | if (!table) | |
471 | return -ENOMEM; | |
ebb7e95d | 472 | |
eb9f3705 | 473 | for (i = 0; table[i].data; i++) |
474 | table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp; | |
e1fc3b14 | 475 | |
ebb7e95d | 476 | net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table); |
f66138c8 | 477 | if (net->sctp.sysctl_header == NULL) { |
478 | kfree(table); | |
479 | return -ENOMEM; | |
480 | } | |
ebb7e95d EB |
481 | return 0; |
482 | } | |
483 | ||
484 | void sctp_sysctl_net_unregister(struct net *net) | |
485 | { | |
5f19d121 VY |
486 | struct ctl_table *table; |
487 | ||
488 | table = net->sctp.sysctl_header->ctl_table_arg; | |
ebb7e95d | 489 | unregister_net_sysctl_table(net->sctp.sysctl_header); |
5f19d121 | 490 | kfree(table); |
ebb7e95d EB |
491 | } |
492 | ||
26ac8e5f | 493 | static struct ctl_table_header *sctp_sysctl_header; |
1da177e4 LT |
494 | |
495 | /* Sysctl registration. */ | |
496 | void sctp_sysctl_register(void) | |
497 | { | |
ec8f23ce | 498 | sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table); |
1da177e4 LT |
499 | } |
500 | ||
501 | /* Sysctl deregistration. */ | |
502 | void sctp_sysctl_unregister(void) | |
503 | { | |
5dd3df10 | 504 | unregister_net_sysctl_table(sctp_sysctl_header); |
1da177e4 | 505 | } |