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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; | |
701ef3e6 | 49 | static int addr_scope_max = SCTP_SCOPE_POLICY_MAX; |
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 | |
b486b228 | 61 | static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, |
3c68198e | 62 | void __user *buffer, size_t *lenp, |
3c68198e | 63 | loff_t *ppos); |
4f3fdf3b | 64 | static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, |
65 | void __user *buffer, size_t *lenp, | |
66 | loff_t *ppos); | |
67 | static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, | |
3c68198e | 68 | void __user *buffer, size_t *lenp, |
3c68198e | 69 | loff_t *ppos); |
b58537a1 DB |
70 | static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, |
71 | void __user *buffer, size_t *lenp, | |
72 | loff_t *ppos); | |
b14878cc VY |
73 | static int proc_sctp_do_auth(struct ctl_table *ctl, int write, |
74 | void __user *buffer, size_t *lenp, | |
75 | loff_t *ppos); | |
4f3fdf3b | 76 | |
fe2c6338 | 77 | static struct ctl_table sctp_table[] = { |
e1fc3b14 EB |
78 | { |
79 | .procname = "sctp_mem", | |
80 | .data = &sysctl_sctp_mem, | |
81 | .maxlen = sizeof(sysctl_sctp_mem), | |
82 | .mode = 0644, | |
83 | .proc_handler = proc_doulongvec_minmax | |
84 | }, | |
85 | { | |
86 | .procname = "sctp_rmem", | |
87 | .data = &sysctl_sctp_rmem, | |
88 | .maxlen = sizeof(sysctl_sctp_rmem), | |
89 | .mode = 0644, | |
90 | .proc_handler = proc_dointvec, | |
91 | }, | |
92 | { | |
93 | .procname = "sctp_wmem", | |
94 | .data = &sysctl_sctp_wmem, | |
95 | .maxlen = sizeof(sysctl_sctp_wmem), | |
96 | .mode = 0644, | |
97 | .proc_handler = proc_dointvec, | |
98 | }, | |
99 | ||
100 | { /* sentinel */ } | |
101 | }; | |
102 | ||
fe2c6338 | 103 | static struct ctl_table sctp_net_table[] = { |
1da177e4 | 104 | { |
1da177e4 | 105 | .procname = "rto_initial", |
e1fc3b14 | 106 | .data = &init_net.sctp.rto_initial, |
3fd091e7 | 107 | .maxlen = sizeof(unsigned int), |
1da177e4 | 108 | .mode = 0644, |
6d9f239a | 109 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
110 | .extra1 = &one, |
111 | .extra2 = &timer_max | |
1da177e4 LT |
112 | }, |
113 | { | |
1da177e4 | 114 | .procname = "rto_min", |
e1fc3b14 | 115 | .data = &init_net.sctp.rto_min, |
3fd091e7 | 116 | .maxlen = sizeof(unsigned int), |
1da177e4 | 117 | .mode = 0644, |
4f3fdf3b | 118 | .proc_handler = proc_sctp_do_rto_min, |
3fd091e7 | 119 | .extra1 = &one, |
4f3fdf3b | 120 | .extra2 = &init_net.sctp.rto_max |
1da177e4 LT |
121 | }, |
122 | { | |
1da177e4 | 123 | .procname = "rto_max", |
e1fc3b14 | 124 | .data = &init_net.sctp.rto_max, |
3fd091e7 | 125 | .maxlen = sizeof(unsigned int), |
1da177e4 | 126 | .mode = 0644, |
4f3fdf3b | 127 | .proc_handler = proc_sctp_do_rto_max, |
128 | .extra1 = &init_net.sctp.rto_min, | |
3fd091e7 | 129 | .extra2 = &timer_max |
1da177e4 LT |
130 | }, |
131 | { | |
e1fc3b14 EB |
132 | .procname = "rto_alpha_exp_divisor", |
133 | .data = &init_net.sctp.rto_alpha, | |
134 | .maxlen = sizeof(int), | |
b58537a1 DB |
135 | .mode = 0644, |
136 | .proc_handler = proc_sctp_do_alpha_beta, | |
137 | .extra1 = &rto_alpha_min, | |
138 | .extra2 = &rto_alpha_max, | |
e1fc3b14 EB |
139 | }, |
140 | { | |
141 | .procname = "rto_beta_exp_divisor", | |
142 | .data = &init_net.sctp.rto_beta, | |
143 | .maxlen = sizeof(int), | |
b58537a1 DB |
144 | .mode = 0644, |
145 | .proc_handler = proc_sctp_do_alpha_beta, | |
146 | .extra1 = &rto_beta_min, | |
147 | .extra2 = &rto_beta_max, | |
1da177e4 LT |
148 | }, |
149 | { | |
1da177e4 | 150 | .procname = "max_burst", |
e1fc3b14 | 151 | .data = &init_net.sctp.max_burst, |
1da177e4 LT |
152 | .maxlen = sizeof(int), |
153 | .mode = 0644, | |
6d9f239a | 154 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
155 | .extra1 = &zero, |
156 | .extra2 = &int_max | |
1da177e4 LT |
157 | }, |
158 | { | |
e1fc3b14 EB |
159 | .procname = "cookie_preserve_enable", |
160 | .data = &init_net.sctp.cookie_preserve_enable, | |
1da177e4 LT |
161 | .maxlen = sizeof(int), |
162 | .mode = 0644, | |
e1fc3b14 EB |
163 | .proc_handler = proc_dointvec, |
164 | }, | |
3c68198e NH |
165 | { |
166 | .procname = "cookie_hmac_alg", | |
22a1f514 | 167 | .data = &init_net.sctp.sctp_hmac_alg, |
3c68198e NH |
168 | .maxlen = 8, |
169 | .mode = 0644, | |
170 | .proc_handler = proc_sctp_do_hmac_alg, | |
171 | }, | |
e1fc3b14 EB |
172 | { |
173 | .procname = "valid_cookie_life", | |
174 | .data = &init_net.sctp.valid_cookie_life, | |
175 | .maxlen = sizeof(unsigned int), | |
176 | .mode = 0644, | |
6d9f239a | 177 | .proc_handler = proc_dointvec_minmax, |
e1fc3b14 EB |
178 | .extra1 = &one, |
179 | .extra2 = &timer_max | |
1da177e4 | 180 | }, |
4eb701df | 181 | { |
e1fc3b14 EB |
182 | .procname = "sack_timeout", |
183 | .data = &init_net.sctp.sack_timeout, | |
4eb701df NH |
184 | .maxlen = sizeof(int), |
185 | .mode = 0644, | |
e1fc3b14 EB |
186 | .proc_handler = proc_dointvec_minmax, |
187 | .extra1 = &sack_timer_min, | |
188 | .extra2 = &sack_timer_max, | |
4eb701df | 189 | }, |
049b3ff5 | 190 | { |
e1fc3b14 EB |
191 | .procname = "hb_interval", |
192 | .data = &init_net.sctp.hb_interval, | |
193 | .maxlen = sizeof(unsigned int), | |
049b3ff5 | 194 | .mode = 0644, |
e1fc3b14 EB |
195 | .proc_handler = proc_dointvec_minmax, |
196 | .extra1 = &one, | |
197 | .extra2 = &timer_max | |
049b3ff5 | 198 | }, |
1da177e4 | 199 | { |
e1fc3b14 EB |
200 | .procname = "association_max_retrans", |
201 | .data = &init_net.sctp.max_retrans_association, | |
1da177e4 LT |
202 | .maxlen = sizeof(int), |
203 | .mode = 0644, | |
6d9f239a | 204 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
205 | .extra1 = &one, |
206 | .extra2 = &int_max | |
1da177e4 | 207 | }, |
5aa93bcf | 208 | { |
e1fc3b14 EB |
209 | .procname = "path_max_retrans", |
210 | .data = &init_net.sctp.max_retrans_path, | |
5aa93bcf NH |
211 | .maxlen = sizeof(int), |
212 | .mode = 0644, | |
213 | .proc_handler = proc_dointvec_minmax, | |
e1fc3b14 | 214 | .extra1 = &one, |
5aa93bcf NH |
215 | .extra2 = &int_max |
216 | }, | |
1da177e4 | 217 | { |
1da177e4 | 218 | .procname = "max_init_retransmits", |
e1fc3b14 | 219 | .data = &init_net.sctp.max_retrans_init, |
1da177e4 LT |
220 | .maxlen = sizeof(int), |
221 | .mode = 0644, | |
6d9f239a | 222 | .proc_handler = proc_dointvec_minmax, |
3fd091e7 VY |
223 | .extra1 = &one, |
224 | .extra2 = &int_max | |
1da177e4 LT |
225 | }, |
226 | { | |
e1fc3b14 EB |
227 | .procname = "pf_retrans", |
228 | .data = &init_net.sctp.pf_retrans, | |
229 | .maxlen = sizeof(int), | |
1da177e4 | 230 | .mode = 0644, |
6d9f239a | 231 | .proc_handler = proc_dointvec_minmax, |
e1fc3b14 EB |
232 | .extra1 = &zero, |
233 | .extra2 = &int_max | |
1da177e4 LT |
234 | }, |
235 | { | |
e1fc3b14 EB |
236 | .procname = "sndbuf_policy", |
237 | .data = &init_net.sctp.sndbuf_policy, | |
8116ffad | 238 | .maxlen = sizeof(int), |
1da177e4 | 239 | .mode = 0644, |
6d9f239a | 240 | .proc_handler = proc_dointvec, |
1da177e4 LT |
241 | }, |
242 | { | |
e1fc3b14 EB |
243 | .procname = "rcvbuf_policy", |
244 | .data = &init_net.sctp.rcvbuf_policy, | |
dd51be0f MH |
245 | .maxlen = sizeof(int), |
246 | .mode = 0644, | |
247 | .proc_handler = proc_dointvec, | |
248 | }, | |
249 | { | |
250 | .procname = "default_auto_asconf", | |
e1fc3b14 | 251 | .data = &init_net.sctp.default_auto_asconf, |
1da177e4 LT |
252 | .maxlen = sizeof(int), |
253 | .mode = 0644, | |
6d9f239a | 254 | .proc_handler = proc_dointvec, |
1da177e4 LT |
255 | }, |
256 | { | |
e1fc3b14 EB |
257 | .procname = "addip_enable", |
258 | .data = &init_net.sctp.addip_enable, | |
1da177e4 LT |
259 | .maxlen = sizeof(int), |
260 | .mode = 0644, | |
6d9f239a | 261 | .proc_handler = proc_dointvec, |
1da177e4 | 262 | }, |
2f85a429 | 263 | { |
e1fc3b14 EB |
264 | .procname = "addip_noauth_enable", |
265 | .data = &init_net.sctp.addip_noauth, | |
d48e074d | 266 | .maxlen = sizeof(int), |
2f85a429 | 267 | .mode = 0644, |
6d9f239a | 268 | .proc_handler = proc_dointvec, |
4d93df0a NH |
269 | }, |
270 | { | |
e1fc3b14 EB |
271 | .procname = "prsctp_enable", |
272 | .data = &init_net.sctp.prsctp_enable, | |
a29a5bd4 VY |
273 | .maxlen = sizeof(int), |
274 | .mode = 0644, | |
6d9f239a | 275 | .proc_handler = proc_dointvec, |
a29a5bd4 | 276 | }, |
c0d8bab6 XL |
277 | { |
278 | .procname = "reconf_enable", | |
279 | .data = &init_net.sctp.reconf_enable, | |
280 | .maxlen = sizeof(int), | |
281 | .mode = 0644, | |
282 | .proc_handler = proc_dointvec, | |
283 | }, | |
73d9c4fd | 284 | { |
e1fc3b14 EB |
285 | .procname = "auth_enable", |
286 | .data = &init_net.sctp.auth_enable, | |
73d9c4fd VY |
287 | .maxlen = sizeof(int), |
288 | .mode = 0644, | |
b14878cc | 289 | .proc_handler = proc_sctp_do_auth, |
73d9c4fd | 290 | }, |
72388433 | 291 | { |
72388433 | 292 | .procname = "addr_scope_policy", |
e1fc3b14 | 293 | .data = &init_net.sctp.scope_policy, |
72388433 BD |
294 | .maxlen = sizeof(int), |
295 | .mode = 0644, | |
6d456111 | 296 | .proc_handler = proc_dointvec_minmax, |
72388433 BD |
297 | .extra1 = &zero, |
298 | .extra2 = &addr_scope_max, | |
299 | }, | |
90f2f531 | 300 | { |
90f2f531 | 301 | .procname = "rwnd_update_shift", |
e1fc3b14 | 302 | .data = &init_net.sctp.rwnd_upd_shift, |
90f2f531 VY |
303 | .maxlen = sizeof(int), |
304 | .mode = 0644, | |
305 | .proc_handler = &proc_dointvec_minmax, | |
90f2f531 VY |
306 | .extra1 = &one, |
307 | .extra2 = &rwnd_scale_max, | |
308 | }, | |
2692ba61 XW |
309 | { |
310 | .procname = "max_autoclose", | |
e1fc3b14 | 311 | .data = &init_net.sctp.max_autoclose, |
2692ba61 XW |
312 | .maxlen = sizeof(unsigned long), |
313 | .mode = 0644, | |
314 | .proc_handler = &proc_doulongvec_minmax, | |
315 | .extra1 = &max_autoclose_min, | |
316 | .extra2 = &max_autoclose_max, | |
317 | }, | |
566178f8 ZY |
318 | { |
319 | .procname = "pf_enable", | |
320 | .data = &init_net.sctp.pf_enable, | |
321 | .maxlen = sizeof(int), | |
322 | .mode = 0644, | |
323 | .proc_handler = proc_dointvec, | |
324 | }, | |
71acc0dd | 325 | |
d7fc02c7 | 326 | { /* sentinel */ } |
1da177e4 LT |
327 | }; |
328 | ||
b486b228 | 329 | static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, |
3c68198e NH |
330 | void __user *buffer, size_t *lenp, |
331 | loff_t *ppos) | |
332 | { | |
333 | struct net *net = current->nsproxy->net_ns; | |
fe2c6338 | 334 | struct ctl_table tbl; |
ff5e92c1 | 335 | bool changed = false; |
3c68198e | 336 | char *none = "none"; |
320f1a4a | 337 | char tmp[8] = {0}; |
ff5e92c1 | 338 | int ret; |
3c68198e NH |
339 | |
340 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
341 | ||
342 | if (write) { | |
343 | tbl.data = tmp; | |
ff5e92c1 | 344 | tbl.maxlen = sizeof(tmp); |
3c68198e NH |
345 | } else { |
346 | tbl.data = net->sctp.sctp_hmac_alg ? : none; | |
347 | tbl.maxlen = strlen(tbl.data); | |
348 | } | |
3c68198e | 349 | |
ff5e92c1 DB |
350 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
351 | if (write && ret == 0) { | |
3c68198e NH |
352 | #ifdef CONFIG_CRYPTO_MD5 |
353 | if (!strncmp(tmp, "md5", 3)) { | |
354 | net->sctp.sctp_hmac_alg = "md5"; | |
ff5e92c1 | 355 | changed = true; |
3c68198e NH |
356 | } |
357 | #endif | |
358 | #ifdef CONFIG_CRYPTO_SHA1 | |
359 | if (!strncmp(tmp, "sha1", 4)) { | |
360 | net->sctp.sctp_hmac_alg = "sha1"; | |
ff5e92c1 | 361 | changed = true; |
3c68198e NH |
362 | } |
363 | #endif | |
364 | if (!strncmp(tmp, "none", 4)) { | |
365 | net->sctp.sctp_hmac_alg = NULL; | |
ff5e92c1 | 366 | changed = true; |
3c68198e | 367 | } |
3c68198e NH |
368 | if (!changed) |
369 | ret = -EINVAL; | |
370 | } | |
371 | ||
372 | return ret; | |
373 | } | |
374 | ||
4f3fdf3b | 375 | static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, |
376 | void __user *buffer, size_t *lenp, | |
377 | loff_t *ppos) | |
378 | { | |
379 | struct net *net = current->nsproxy->net_ns; | |
4f3fdf3b | 380 | unsigned int min = *(unsigned int *) ctl->extra1; |
381 | unsigned int max = *(unsigned int *) ctl->extra2; | |
ff5e92c1 DB |
382 | struct ctl_table tbl; |
383 | int ret, new_value; | |
4f3fdf3b | 384 | |
385 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
386 | tbl.maxlen = sizeof(unsigned int); | |
387 | ||
388 | if (write) | |
389 | tbl.data = &new_value; | |
390 | else | |
391 | tbl.data = &net->sctp.rto_min; | |
ff5e92c1 | 392 | |
4f3fdf3b | 393 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); |
ff5e92c1 DB |
394 | if (write && ret == 0) { |
395 | if (new_value > max || new_value < min) | |
4f3fdf3b | 396 | return -EINVAL; |
ff5e92c1 | 397 | |
4f3fdf3b | 398 | net->sctp.rto_min = new_value; |
399 | } | |
ff5e92c1 | 400 | |
4f3fdf3b | 401 | return ret; |
402 | } | |
403 | ||
404 | static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, | |
405 | void __user *buffer, size_t *lenp, | |
406 | loff_t *ppos) | |
407 | { | |
408 | struct net *net = current->nsproxy->net_ns; | |
4f3fdf3b | 409 | unsigned int min = *(unsigned int *) ctl->extra1; |
410 | unsigned int max = *(unsigned int *) ctl->extra2; | |
ff5e92c1 DB |
411 | struct ctl_table tbl; |
412 | int ret, new_value; | |
4f3fdf3b | 413 | |
414 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
415 | tbl.maxlen = sizeof(unsigned int); | |
416 | ||
417 | if (write) | |
418 | tbl.data = &new_value; | |
419 | else | |
420 | tbl.data = &net->sctp.rto_max; | |
ff5e92c1 | 421 | |
4f3fdf3b | 422 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); |
ff5e92c1 DB |
423 | if (write && ret == 0) { |
424 | if (new_value > max || new_value < min) | |
4f3fdf3b | 425 | return -EINVAL; |
ff5e92c1 | 426 | |
4f3fdf3b | 427 | net->sctp.rto_max = new_value; |
428 | } | |
ff5e92c1 | 429 | |
4f3fdf3b | 430 | return ret; |
431 | } | |
432 | ||
b58537a1 DB |
433 | static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, |
434 | void __user *buffer, size_t *lenp, | |
435 | loff_t *ppos) | |
436 | { | |
eaea2da7 DB |
437 | if (write) |
438 | pr_warn_once("Changing rto_alpha or rto_beta may lead to " | |
439 | "suboptimal rtt/srtt estimations!\n"); | |
b58537a1 DB |
440 | |
441 | return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); | |
442 | } | |
443 | ||
b14878cc VY |
444 | static int proc_sctp_do_auth(struct ctl_table *ctl, int write, |
445 | void __user *buffer, size_t *lenp, | |
446 | loff_t *ppos) | |
447 | { | |
448 | struct net *net = current->nsproxy->net_ns; | |
449 | struct ctl_table tbl; | |
450 | int new_value, ret; | |
451 | ||
452 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
453 | tbl.maxlen = sizeof(unsigned int); | |
454 | ||
455 | if (write) | |
456 | tbl.data = &new_value; | |
457 | else | |
458 | tbl.data = &net->sctp.auth_enable; | |
459 | ||
460 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); | |
24599e61 | 461 | if (write && ret == 0) { |
b14878cc VY |
462 | struct sock *sk = net->sctp.ctl_sock; |
463 | ||
464 | net->sctp.auth_enable = new_value; | |
465 | /* Update the value in the control socket */ | |
466 | lock_sock(sk); | |
467 | sctp_sk(sk)->ep->auth_enable = new_value; | |
468 | release_sock(sk); | |
469 | } | |
470 | ||
471 | return ret; | |
472 | } | |
473 | ||
ebb7e95d EB |
474 | int sctp_sysctl_net_register(struct net *net) |
475 | { | |
eb9f3705 | 476 | struct ctl_table *table; |
477 | int i; | |
ebb7e95d | 478 | |
eb9f3705 | 479 | table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL); |
480 | if (!table) | |
481 | return -ENOMEM; | |
ebb7e95d | 482 | |
eb9f3705 | 483 | for (i = 0; table[i].data; i++) |
484 | table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp; | |
e1fc3b14 | 485 | |
ebb7e95d | 486 | net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table); |
f66138c8 | 487 | if (net->sctp.sysctl_header == NULL) { |
488 | kfree(table); | |
489 | return -ENOMEM; | |
490 | } | |
ebb7e95d EB |
491 | return 0; |
492 | } | |
493 | ||
494 | void sctp_sysctl_net_unregister(struct net *net) | |
495 | { | |
5f19d121 VY |
496 | struct ctl_table *table; |
497 | ||
498 | table = net->sctp.sysctl_header->ctl_table_arg; | |
ebb7e95d | 499 | unregister_net_sysctl_table(net->sctp.sysctl_header); |
5f19d121 | 500 | kfree(table); |
ebb7e95d EB |
501 | } |
502 | ||
26ac8e5f | 503 | static struct ctl_table_header *sctp_sysctl_header; |
1da177e4 LT |
504 | |
505 | /* Sysctl registration. */ | |
506 | void sctp_sysctl_register(void) | |
507 | { | |
ec8f23ce | 508 | sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table); |
1da177e4 LT |
509 | } |
510 | ||
511 | /* Sysctl deregistration. */ | |
512 | void sctp_sysctl_unregister(void) | |
513 | { | |
5dd3df10 | 514 | unregister_net_sysctl_table(sctp_sysctl_header); |
1da177e4 | 515 | } |