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Commit | Line | Data |
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47505b8b | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
60c778b2 | 2 | /* SCTP kernel implementation |
1da177e4 LT |
3 | * (C) Copyright IBM Corp. 2002, 2004 |
4 | * Copyright (c) 2002 Intel Corp. | |
5 | * | |
60c778b2 | 6 | * This file is part of the SCTP kernel implementation |
1da177e4 LT |
7 | * |
8 | * Sysctl related interfaces for SCTP. | |
9 | * | |
1da177e4 LT |
10 | * Please send any bug reports or fixes you make to the |
11 | * email address(es): | |
91705c61 | 12 | * lksctp developers <linux-sctp@vger.kernel.org> |
1da177e4 | 13 | * |
1da177e4 LT |
14 | * Written or modified by: |
15 | * Mingqin Liu <liuming@us.ibm.com> | |
16 | * Jon Grimm <jgrimm@us.ibm.com> | |
17 | * Ardelle Fan <ardelle.fan@intel.com> | |
18 | * Ryan Layer <rmlayer@us.ibm.com> | |
19 | * Sridhar Samudrala <sri@us.ibm.com> | |
1da177e4 LT |
20 | */ |
21 | ||
b58537a1 DB |
22 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
23 | ||
1da177e4 | 24 | #include <net/sctp/structs.h> |
8c5955d8 | 25 | #include <net/sctp/sctp.h> |
1da177e4 LT |
26 | #include <linux/sysctl.h> |
27 | ||
3fd091e7 | 28 | static int timer_max = 86400000; /* ms in one day */ |
d48e074d JMG |
29 | static int sack_timer_min = 1; |
30 | static int sack_timer_max = 500; | |
701ef3e6 | 31 | static int addr_scope_max = SCTP_SCOPE_POLICY_MAX; |
90f2f531 | 32 | static int rwnd_scale_max = 16; |
b58537a1 DB |
33 | static int rto_alpha_min = 0; |
34 | static int rto_beta_min = 0; | |
35 | static int rto_alpha_max = 1000; | |
36 | static int rto_beta_max = 1000; | |
37 | ||
2692ba61 XW |
38 | static unsigned long max_autoclose_min = 0; |
39 | static unsigned long max_autoclose_max = | |
40 | (MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX) | |
41 | ? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ; | |
1da177e4 | 42 | |
b486b228 | 43 | static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, |
3c68198e | 44 | void __user *buffer, size_t *lenp, |
3c68198e | 45 | loff_t *ppos); |
4f3fdf3b | 46 | static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, |
47 | void __user *buffer, size_t *lenp, | |
48 | loff_t *ppos); | |
49 | static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, | |
3c68198e | 50 | void __user *buffer, size_t *lenp, |
3c68198e | 51 | loff_t *ppos); |
b58537a1 DB |
52 | static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, |
53 | void __user *buffer, size_t *lenp, | |
54 | loff_t *ppos); | |
b14878cc VY |
55 | static int proc_sctp_do_auth(struct ctl_table *ctl, int write, |
56 | void __user *buffer, size_t *lenp, | |
57 | loff_t *ppos); | |
4f3fdf3b | 58 | |
fe2c6338 | 59 | static struct ctl_table sctp_table[] = { |
e1fc3b14 EB |
60 | { |
61 | .procname = "sctp_mem", | |
62 | .data = &sysctl_sctp_mem, | |
63 | .maxlen = sizeof(sysctl_sctp_mem), | |
64 | .mode = 0644, | |
65 | .proc_handler = proc_doulongvec_minmax | |
66 | }, | |
67 | { | |
68 | .procname = "sctp_rmem", | |
69 | .data = &sysctl_sctp_rmem, | |
70 | .maxlen = sizeof(sysctl_sctp_rmem), | |
71 | .mode = 0644, | |
72 | .proc_handler = proc_dointvec, | |
73 | }, | |
74 | { | |
75 | .procname = "sctp_wmem", | |
76 | .data = &sysctl_sctp_wmem, | |
77 | .maxlen = sizeof(sysctl_sctp_wmem), | |
78 | .mode = 0644, | |
79 | .proc_handler = proc_dointvec, | |
80 | }, | |
81 | ||
82 | { /* sentinel */ } | |
83 | }; | |
84 | ||
fe2c6338 | 85 | static struct ctl_table sctp_net_table[] = { |
1da177e4 | 86 | { |
1da177e4 | 87 | .procname = "rto_initial", |
e1fc3b14 | 88 | .data = &init_net.sctp.rto_initial, |
3fd091e7 | 89 | .maxlen = sizeof(unsigned int), |
1da177e4 | 90 | .mode = 0644, |
6d9f239a | 91 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 92 | .extra1 = SYSCTL_ONE, |
3fd091e7 | 93 | .extra2 = &timer_max |
1da177e4 LT |
94 | }, |
95 | { | |
1da177e4 | 96 | .procname = "rto_min", |
e1fc3b14 | 97 | .data = &init_net.sctp.rto_min, |
3fd091e7 | 98 | .maxlen = sizeof(unsigned int), |
1da177e4 | 99 | .mode = 0644, |
4f3fdf3b | 100 | .proc_handler = proc_sctp_do_rto_min, |
eec4844f | 101 | .extra1 = SYSCTL_ONE, |
4f3fdf3b | 102 | .extra2 = &init_net.sctp.rto_max |
1da177e4 LT |
103 | }, |
104 | { | |
1da177e4 | 105 | .procname = "rto_max", |
e1fc3b14 | 106 | .data = &init_net.sctp.rto_max, |
3fd091e7 | 107 | .maxlen = sizeof(unsigned int), |
1da177e4 | 108 | .mode = 0644, |
4f3fdf3b | 109 | .proc_handler = proc_sctp_do_rto_max, |
110 | .extra1 = &init_net.sctp.rto_min, | |
3fd091e7 | 111 | .extra2 = &timer_max |
1da177e4 LT |
112 | }, |
113 | { | |
e1fc3b14 EB |
114 | .procname = "rto_alpha_exp_divisor", |
115 | .data = &init_net.sctp.rto_alpha, | |
116 | .maxlen = sizeof(int), | |
b58537a1 DB |
117 | .mode = 0644, |
118 | .proc_handler = proc_sctp_do_alpha_beta, | |
119 | .extra1 = &rto_alpha_min, | |
120 | .extra2 = &rto_alpha_max, | |
e1fc3b14 EB |
121 | }, |
122 | { | |
123 | .procname = "rto_beta_exp_divisor", | |
124 | .data = &init_net.sctp.rto_beta, | |
125 | .maxlen = sizeof(int), | |
b58537a1 DB |
126 | .mode = 0644, |
127 | .proc_handler = proc_sctp_do_alpha_beta, | |
128 | .extra1 = &rto_beta_min, | |
129 | .extra2 = &rto_beta_max, | |
1da177e4 LT |
130 | }, |
131 | { | |
1da177e4 | 132 | .procname = "max_burst", |
e1fc3b14 | 133 | .data = &init_net.sctp.max_burst, |
1da177e4 LT |
134 | .maxlen = sizeof(int), |
135 | .mode = 0644, | |
6d9f239a | 136 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
137 | .extra1 = SYSCTL_ZERO, |
138 | .extra2 = SYSCTL_INT_MAX, | |
1da177e4 LT |
139 | }, |
140 | { | |
e1fc3b14 EB |
141 | .procname = "cookie_preserve_enable", |
142 | .data = &init_net.sctp.cookie_preserve_enable, | |
1da177e4 LT |
143 | .maxlen = sizeof(int), |
144 | .mode = 0644, | |
e1fc3b14 EB |
145 | .proc_handler = proc_dointvec, |
146 | }, | |
3c68198e NH |
147 | { |
148 | .procname = "cookie_hmac_alg", | |
22a1f514 | 149 | .data = &init_net.sctp.sctp_hmac_alg, |
3c68198e NH |
150 | .maxlen = 8, |
151 | .mode = 0644, | |
152 | .proc_handler = proc_sctp_do_hmac_alg, | |
153 | }, | |
e1fc3b14 EB |
154 | { |
155 | .procname = "valid_cookie_life", | |
156 | .data = &init_net.sctp.valid_cookie_life, | |
157 | .maxlen = sizeof(unsigned int), | |
158 | .mode = 0644, | |
6d9f239a | 159 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 160 | .extra1 = SYSCTL_ONE, |
e1fc3b14 | 161 | .extra2 = &timer_max |
1da177e4 | 162 | }, |
4eb701df | 163 | { |
e1fc3b14 EB |
164 | .procname = "sack_timeout", |
165 | .data = &init_net.sctp.sack_timeout, | |
4eb701df NH |
166 | .maxlen = sizeof(int), |
167 | .mode = 0644, | |
e1fc3b14 EB |
168 | .proc_handler = proc_dointvec_minmax, |
169 | .extra1 = &sack_timer_min, | |
170 | .extra2 = &sack_timer_max, | |
4eb701df | 171 | }, |
049b3ff5 | 172 | { |
e1fc3b14 EB |
173 | .procname = "hb_interval", |
174 | .data = &init_net.sctp.hb_interval, | |
175 | .maxlen = sizeof(unsigned int), | |
049b3ff5 | 176 | .mode = 0644, |
e1fc3b14 | 177 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 178 | .extra1 = SYSCTL_ONE, |
e1fc3b14 | 179 | .extra2 = &timer_max |
049b3ff5 | 180 | }, |
1da177e4 | 181 | { |
e1fc3b14 EB |
182 | .procname = "association_max_retrans", |
183 | .data = &init_net.sctp.max_retrans_association, | |
1da177e4 LT |
184 | .maxlen = sizeof(int), |
185 | .mode = 0644, | |
6d9f239a | 186 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
187 | .extra1 = SYSCTL_ONE, |
188 | .extra2 = SYSCTL_INT_MAX, | |
1da177e4 | 189 | }, |
5aa93bcf | 190 | { |
e1fc3b14 EB |
191 | .procname = "path_max_retrans", |
192 | .data = &init_net.sctp.max_retrans_path, | |
5aa93bcf NH |
193 | .maxlen = sizeof(int), |
194 | .mode = 0644, | |
195 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
196 | .extra1 = SYSCTL_ONE, |
197 | .extra2 = SYSCTL_INT_MAX, | |
5aa93bcf | 198 | }, |
1da177e4 | 199 | { |
1da177e4 | 200 | .procname = "max_init_retransmits", |
e1fc3b14 | 201 | .data = &init_net.sctp.max_retrans_init, |
1da177e4 LT |
202 | .maxlen = sizeof(int), |
203 | .mode = 0644, | |
6d9f239a | 204 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
205 | .extra1 = SYSCTL_ONE, |
206 | .extra2 = SYSCTL_INT_MAX, | |
1da177e4 LT |
207 | }, |
208 | { | |
e1fc3b14 EB |
209 | .procname = "pf_retrans", |
210 | .data = &init_net.sctp.pf_retrans, | |
211 | .maxlen = sizeof(int), | |
1da177e4 | 212 | .mode = 0644, |
6d9f239a | 213 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
214 | .extra1 = SYSCTL_ZERO, |
215 | .extra2 = SYSCTL_INT_MAX, | |
1da177e4 LT |
216 | }, |
217 | { | |
e1fc3b14 EB |
218 | .procname = "sndbuf_policy", |
219 | .data = &init_net.sctp.sndbuf_policy, | |
8116ffad | 220 | .maxlen = sizeof(int), |
1da177e4 | 221 | .mode = 0644, |
6d9f239a | 222 | .proc_handler = proc_dointvec, |
1da177e4 LT |
223 | }, |
224 | { | |
e1fc3b14 EB |
225 | .procname = "rcvbuf_policy", |
226 | .data = &init_net.sctp.rcvbuf_policy, | |
dd51be0f MH |
227 | .maxlen = sizeof(int), |
228 | .mode = 0644, | |
229 | .proc_handler = proc_dointvec, | |
230 | }, | |
231 | { | |
232 | .procname = "default_auto_asconf", | |
e1fc3b14 | 233 | .data = &init_net.sctp.default_auto_asconf, |
1da177e4 LT |
234 | .maxlen = sizeof(int), |
235 | .mode = 0644, | |
6d9f239a | 236 | .proc_handler = proc_dointvec, |
1da177e4 LT |
237 | }, |
238 | { | |
e1fc3b14 EB |
239 | .procname = "addip_enable", |
240 | .data = &init_net.sctp.addip_enable, | |
1da177e4 LT |
241 | .maxlen = sizeof(int), |
242 | .mode = 0644, | |
6d9f239a | 243 | .proc_handler = proc_dointvec, |
1da177e4 | 244 | }, |
2f85a429 | 245 | { |
e1fc3b14 EB |
246 | .procname = "addip_noauth_enable", |
247 | .data = &init_net.sctp.addip_noauth, | |
d48e074d | 248 | .maxlen = sizeof(int), |
2f85a429 | 249 | .mode = 0644, |
6d9f239a | 250 | .proc_handler = proc_dointvec, |
4d93df0a NH |
251 | }, |
252 | { | |
e1fc3b14 EB |
253 | .procname = "prsctp_enable", |
254 | .data = &init_net.sctp.prsctp_enable, | |
a29a5bd4 VY |
255 | .maxlen = sizeof(int), |
256 | .mode = 0644, | |
6d9f239a | 257 | .proc_handler = proc_dointvec, |
a29a5bd4 | 258 | }, |
c0d8bab6 XL |
259 | { |
260 | .procname = "reconf_enable", | |
261 | .data = &init_net.sctp.reconf_enable, | |
262 | .maxlen = sizeof(int), | |
263 | .mode = 0644, | |
264 | .proc_handler = proc_dointvec, | |
265 | }, | |
73d9c4fd | 266 | { |
e1fc3b14 EB |
267 | .procname = "auth_enable", |
268 | .data = &init_net.sctp.auth_enable, | |
73d9c4fd VY |
269 | .maxlen = sizeof(int), |
270 | .mode = 0644, | |
b14878cc | 271 | .proc_handler = proc_sctp_do_auth, |
73d9c4fd | 272 | }, |
463118c3 XL |
273 | { |
274 | .procname = "intl_enable", | |
275 | .data = &init_net.sctp.intl_enable, | |
276 | .maxlen = sizeof(int), | |
277 | .mode = 0644, | |
278 | .proc_handler = proc_dointvec, | |
279 | }, | |
2f5268a9 XL |
280 | { |
281 | .procname = "ecn_enable", | |
282 | .data = &init_net.sctp.ecn_enable, | |
283 | .maxlen = sizeof(int), | |
284 | .mode = 0644, | |
285 | .proc_handler = proc_dointvec, | |
286 | }, | |
72388433 | 287 | { |
72388433 | 288 | .procname = "addr_scope_policy", |
e1fc3b14 | 289 | .data = &init_net.sctp.scope_policy, |
72388433 BD |
290 | .maxlen = sizeof(int), |
291 | .mode = 0644, | |
6d456111 | 292 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 293 | .extra1 = SYSCTL_ZERO, |
72388433 BD |
294 | .extra2 = &addr_scope_max, |
295 | }, | |
90f2f531 | 296 | { |
90f2f531 | 297 | .procname = "rwnd_update_shift", |
e1fc3b14 | 298 | .data = &init_net.sctp.rwnd_upd_shift, |
90f2f531 VY |
299 | .maxlen = sizeof(int), |
300 | .mode = 0644, | |
301 | .proc_handler = &proc_dointvec_minmax, | |
eec4844f | 302 | .extra1 = SYSCTL_ONE, |
90f2f531 VY |
303 | .extra2 = &rwnd_scale_max, |
304 | }, | |
2692ba61 XW |
305 | { |
306 | .procname = "max_autoclose", | |
e1fc3b14 | 307 | .data = &init_net.sctp.max_autoclose, |
2692ba61 XW |
308 | .maxlen = sizeof(unsigned long), |
309 | .mode = 0644, | |
310 | .proc_handler = &proc_doulongvec_minmax, | |
311 | .extra1 = &max_autoclose_min, | |
312 | .extra2 = &max_autoclose_max, | |
313 | }, | |
566178f8 ZY |
314 | { |
315 | .procname = "pf_enable", | |
316 | .data = &init_net.sctp.pf_enable, | |
317 | .maxlen = sizeof(int), | |
318 | .mode = 0644, | |
319 | .proc_handler = proc_dointvec, | |
320 | }, | |
71acc0dd | 321 | |
d7fc02c7 | 322 | { /* sentinel */ } |
1da177e4 LT |
323 | }; |
324 | ||
b486b228 | 325 | static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, |
3c68198e NH |
326 | void __user *buffer, size_t *lenp, |
327 | loff_t *ppos) | |
328 | { | |
329 | struct net *net = current->nsproxy->net_ns; | |
fe2c6338 | 330 | struct ctl_table tbl; |
ff5e92c1 | 331 | bool changed = false; |
3c68198e | 332 | char *none = "none"; |
320f1a4a | 333 | char tmp[8] = {0}; |
ff5e92c1 | 334 | int ret; |
3c68198e NH |
335 | |
336 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
337 | ||
338 | if (write) { | |
339 | tbl.data = tmp; | |
ff5e92c1 | 340 | tbl.maxlen = sizeof(tmp); |
3c68198e NH |
341 | } else { |
342 | tbl.data = net->sctp.sctp_hmac_alg ? : none; | |
343 | tbl.maxlen = strlen(tbl.data); | |
344 | } | |
3c68198e | 345 | |
ff5e92c1 DB |
346 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
347 | if (write && ret == 0) { | |
3c68198e NH |
348 | #ifdef CONFIG_CRYPTO_MD5 |
349 | if (!strncmp(tmp, "md5", 3)) { | |
350 | net->sctp.sctp_hmac_alg = "md5"; | |
ff5e92c1 | 351 | changed = true; |
3c68198e NH |
352 | } |
353 | #endif | |
354 | #ifdef CONFIG_CRYPTO_SHA1 | |
355 | if (!strncmp(tmp, "sha1", 4)) { | |
356 | net->sctp.sctp_hmac_alg = "sha1"; | |
ff5e92c1 | 357 | changed = true; |
3c68198e NH |
358 | } |
359 | #endif | |
360 | if (!strncmp(tmp, "none", 4)) { | |
361 | net->sctp.sctp_hmac_alg = NULL; | |
ff5e92c1 | 362 | changed = true; |
3c68198e | 363 | } |
3c68198e NH |
364 | if (!changed) |
365 | ret = -EINVAL; | |
366 | } | |
367 | ||
368 | return ret; | |
369 | } | |
370 | ||
4f3fdf3b | 371 | static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, |
372 | void __user *buffer, size_t *lenp, | |
373 | loff_t *ppos) | |
374 | { | |
375 | struct net *net = current->nsproxy->net_ns; | |
4f3fdf3b | 376 | unsigned int min = *(unsigned int *) ctl->extra1; |
377 | unsigned int max = *(unsigned int *) ctl->extra2; | |
ff5e92c1 DB |
378 | struct ctl_table tbl; |
379 | int ret, new_value; | |
4f3fdf3b | 380 | |
381 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
382 | tbl.maxlen = sizeof(unsigned int); | |
383 | ||
384 | if (write) | |
385 | tbl.data = &new_value; | |
386 | else | |
387 | tbl.data = &net->sctp.rto_min; | |
ff5e92c1 | 388 | |
4f3fdf3b | 389 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); |
ff5e92c1 DB |
390 | if (write && ret == 0) { |
391 | if (new_value > max || new_value < min) | |
4f3fdf3b | 392 | return -EINVAL; |
ff5e92c1 | 393 | |
4f3fdf3b | 394 | net->sctp.rto_min = new_value; |
395 | } | |
ff5e92c1 | 396 | |
4f3fdf3b | 397 | return ret; |
398 | } | |
399 | ||
400 | static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, | |
401 | void __user *buffer, size_t *lenp, | |
402 | loff_t *ppos) | |
403 | { | |
404 | struct net *net = current->nsproxy->net_ns; | |
4f3fdf3b | 405 | unsigned int min = *(unsigned int *) ctl->extra1; |
406 | unsigned int max = *(unsigned int *) ctl->extra2; | |
ff5e92c1 DB |
407 | struct ctl_table tbl; |
408 | int ret, new_value; | |
4f3fdf3b | 409 | |
410 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
411 | tbl.maxlen = sizeof(unsigned int); | |
412 | ||
413 | if (write) | |
414 | tbl.data = &new_value; | |
415 | else | |
416 | tbl.data = &net->sctp.rto_max; | |
ff5e92c1 | 417 | |
4f3fdf3b | 418 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); |
ff5e92c1 DB |
419 | if (write && ret == 0) { |
420 | if (new_value > max || new_value < min) | |
4f3fdf3b | 421 | return -EINVAL; |
ff5e92c1 | 422 | |
4f3fdf3b | 423 | net->sctp.rto_max = new_value; |
424 | } | |
ff5e92c1 | 425 | |
4f3fdf3b | 426 | return ret; |
427 | } | |
428 | ||
b58537a1 DB |
429 | static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, |
430 | void __user *buffer, size_t *lenp, | |
431 | loff_t *ppos) | |
432 | { | |
eaea2da7 DB |
433 | if (write) |
434 | pr_warn_once("Changing rto_alpha or rto_beta may lead to " | |
435 | "suboptimal rtt/srtt estimations!\n"); | |
b58537a1 DB |
436 | |
437 | return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); | |
438 | } | |
439 | ||
b14878cc VY |
440 | static int proc_sctp_do_auth(struct ctl_table *ctl, int write, |
441 | void __user *buffer, size_t *lenp, | |
442 | loff_t *ppos) | |
443 | { | |
444 | struct net *net = current->nsproxy->net_ns; | |
445 | struct ctl_table tbl; | |
446 | int new_value, ret; | |
447 | ||
448 | memset(&tbl, 0, sizeof(struct ctl_table)); | |
449 | tbl.maxlen = sizeof(unsigned int); | |
450 | ||
451 | if (write) | |
452 | tbl.data = &new_value; | |
453 | else | |
454 | tbl.data = &net->sctp.auth_enable; | |
455 | ||
456 | ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); | |
24599e61 | 457 | if (write && ret == 0) { |
b14878cc VY |
458 | struct sock *sk = net->sctp.ctl_sock; |
459 | ||
460 | net->sctp.auth_enable = new_value; | |
461 | /* Update the value in the control socket */ | |
462 | lock_sock(sk); | |
463 | sctp_sk(sk)->ep->auth_enable = new_value; | |
464 | release_sock(sk); | |
465 | } | |
466 | ||
467 | return ret; | |
468 | } | |
469 | ||
ebb7e95d EB |
470 | int sctp_sysctl_net_register(struct net *net) |
471 | { | |
eb9f3705 | 472 | struct ctl_table *table; |
473 | int i; | |
ebb7e95d | 474 | |
eb9f3705 | 475 | table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL); |
476 | if (!table) | |
477 | return -ENOMEM; | |
ebb7e95d | 478 | |
eb9f3705 | 479 | for (i = 0; table[i].data; i++) |
480 | table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp; | |
e1fc3b14 | 481 | |
ebb7e95d | 482 | net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table); |
f66138c8 | 483 | if (net->sctp.sysctl_header == NULL) { |
484 | kfree(table); | |
485 | return -ENOMEM; | |
486 | } | |
ebb7e95d EB |
487 | return 0; |
488 | } | |
489 | ||
490 | void sctp_sysctl_net_unregister(struct net *net) | |
491 | { | |
5f19d121 VY |
492 | struct ctl_table *table; |
493 | ||
494 | table = net->sctp.sysctl_header->ctl_table_arg; | |
ebb7e95d | 495 | unregister_net_sysctl_table(net->sctp.sysctl_header); |
5f19d121 | 496 | kfree(table); |
ebb7e95d EB |
497 | } |
498 | ||
26ac8e5f | 499 | static struct ctl_table_header *sctp_sysctl_header; |
1da177e4 LT |
500 | |
501 | /* Sysctl registration. */ | |
502 | void sctp_sysctl_register(void) | |
503 | { | |
ec8f23ce | 504 | sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table); |
1da177e4 LT |
505 | } |
506 | ||
507 | /* Sysctl deregistration. */ | |
508 | void sctp_sysctl_unregister(void) | |
509 | { | |
5dd3df10 | 510 | unregister_net_sysctl_table(sctp_sysctl_header); |
1da177e4 | 511 | } |