Commit | Line | Data |
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a61127c2 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
a38f7907 SK |
2 | /* |
3 | * Crypto user configuration API. | |
4 | * | |
5 | * Copyright (C) 2011 secunet Security Networks AG | |
6 | * Copyright (C) 2011 Steffen Klassert <steffen.klassert@secunet.com> | |
a38f7907 SK |
7 | */ |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/crypto.h> | |
11 | #include <linux/cryptouser.h> | |
1e122994 | 12 | #include <linux/sched.h> |
a38f7907 | 13 | #include <linux/security.h> |
91b05a7e | 14 | #include <net/netlink.h> |
a38f7907 | 15 | #include <net/net_namespace.h> |
91b05a7e | 16 | #include <net/sock.h> |
1e122994 | 17 | #include <crypto/internal/skcipher.h> |
9aa867e4 | 18 | #include <crypto/internal/rng.h> |
3c339ab8 | 19 | #include <crypto/akcipher.h> |
4e5f2c40 | 20 | #include <crypto/kpp.h> |
cac5818c | 21 | #include <crypto/internal/cryptouser.h> |
1e122994 | 22 | |
a38f7907 SK |
23 | #include "internal.h" |
24 | ||
8fd61d34 MK |
25 | #define null_terminated(x) (strnlen(x, sizeof(x)) < sizeof(x)) |
26 | ||
66ce0b0f | 27 | static DEFINE_MUTEX(crypto_cfg_mutex); |
a38f7907 | 28 | |
a38f7907 SK |
29 | struct crypto_dump_info { |
30 | struct sk_buff *in_skb; | |
31 | struct sk_buff *out_skb; | |
32 | u32 nlmsg_seq; | |
33 | u16 nlmsg_flags; | |
34 | }; | |
35 | ||
cac5818c | 36 | struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact) |
a38f7907 | 37 | { |
a38f7907 SK |
38 | struct crypto_alg *q, *alg = NULL; |
39 | ||
40 | down_read(&crypto_alg_sem); | |
41 | ||
a38f7907 | 42 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
e6ea64ec | 43 | int match = 0; |
a38f7907 | 44 | |
21d4120e EB |
45 | if (crypto_is_larval(q)) |
46 | continue; | |
47 | ||
a38f7907 SK |
48 | if ((q->cra_flags ^ p->cru_type) & p->cru_mask) |
49 | continue; | |
50 | ||
51 | if (strlen(p->cru_driver_name)) | |
52 | match = !strcmp(q->cra_driver_name, | |
53 | p->cru_driver_name); | |
54 | else if (!exact) | |
55 | match = !strcmp(q->cra_name, p->cru_name); | |
56 | ||
016baaa1 HX |
57 | if (!match) |
58 | continue; | |
59 | ||
60 | if (unlikely(!crypto_mod_get(q))) | |
61 | continue; | |
62 | ||
63 | alg = q; | |
64 | break; | |
a38f7907 SK |
65 | } |
66 | ||
67 | up_read(&crypto_alg_sem); | |
68 | ||
69 | return alg; | |
70 | } | |
71 | ||
07a5fa4a SK |
72 | static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg) |
73 | { | |
74 | struct crypto_report_cipher rcipher; | |
75 | ||
37db69e0 EB |
76 | memset(&rcipher, 0, sizeof(rcipher)); |
77 | ||
78 | strscpy(rcipher.type, "cipher", sizeof(rcipher.type)); | |
07a5fa4a SK |
79 | |
80 | rcipher.blocksize = alg->cra_blocksize; | |
81 | rcipher.min_keysize = alg->cra_cipher.cia_min_keysize; | |
82 | rcipher.max_keysize = alg->cra_cipher.cia_max_keysize; | |
83 | ||
37db69e0 EB |
84 | return nla_put(skb, CRYPTOCFGA_REPORT_CIPHER, |
85 | sizeof(rcipher), &rcipher); | |
07a5fa4a SK |
86 | } |
87 | ||
540b97c1 SK |
88 | static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg) |
89 | { | |
90 | struct crypto_report_comp rcomp; | |
91 | ||
37db69e0 EB |
92 | memset(&rcomp, 0, sizeof(rcomp)); |
93 | ||
94 | strscpy(rcomp.type, "compression", sizeof(rcomp.type)); | |
540b97c1 | 95 | |
37db69e0 | 96 | return nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS, sizeof(rcomp), &rcomp); |
540b97c1 SK |
97 | } |
98 | ||
a38f7907 SK |
99 | static int crypto_report_one(struct crypto_alg *alg, |
100 | struct crypto_user_alg *ualg, struct sk_buff *skb) | |
101 | { | |
37db69e0 EB |
102 | memset(ualg, 0, sizeof(*ualg)); |
103 | ||
104 | strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name)); | |
105 | strscpy(ualg->cru_driver_name, alg->cra_driver_name, | |
9a5467bf | 106 | sizeof(ualg->cru_driver_name)); |
37db69e0 | 107 | strscpy(ualg->cru_module_name, module_name(alg->cra_module), |
9a5467bf MK |
108 | sizeof(ualg->cru_module_name)); |
109 | ||
110 | ualg->cru_type = 0; | |
111 | ualg->cru_mask = 0; | |
a38f7907 | 112 | ualg->cru_flags = alg->cra_flags; |
ce8614a3 | 113 | ualg->cru_refcnt = refcount_read(&alg->cra_refcnt); |
a38f7907 | 114 | |
6662df33 DM |
115 | if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority)) |
116 | goto nla_put_failure; | |
6c5a86f5 SK |
117 | if (alg->cra_flags & CRYPTO_ALG_LARVAL) { |
118 | struct crypto_report_larval rl; | |
119 | ||
37db69e0 EB |
120 | memset(&rl, 0, sizeof(rl)); |
121 | strscpy(rl.type, "larval", sizeof(rl.type)); | |
122 | if (nla_put(skb, CRYPTOCFGA_REPORT_LARVAL, sizeof(rl), &rl)) | |
6662df33 | 123 | goto nla_put_failure; |
6c5a86f5 SK |
124 | goto out; |
125 | } | |
126 | ||
b6aa63c0 SK |
127 | if (alg->cra_type && alg->cra_type->report) { |
128 | if (alg->cra_type->report(skb, alg)) | |
129 | goto nla_put_failure; | |
07a5fa4a SK |
130 | |
131 | goto out; | |
132 | } | |
133 | ||
134 | switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) { | |
135 | case CRYPTO_ALG_TYPE_CIPHER: | |
136 | if (crypto_report_cipher(skb, alg)) | |
137 | goto nla_put_failure; | |
138 | ||
540b97c1 SK |
139 | break; |
140 | case CRYPTO_ALG_TYPE_COMPRESS: | |
141 | if (crypto_report_comp(skb, alg)) | |
142 | goto nla_put_failure; | |
143 | ||
07a5fa4a | 144 | break; |
b6aa63c0 SK |
145 | } |
146 | ||
6c5a86f5 | 147 | out: |
a38f7907 SK |
148 | return 0; |
149 | ||
150 | nla_put_failure: | |
151 | return -EMSGSIZE; | |
152 | } | |
153 | ||
154 | static int crypto_report_alg(struct crypto_alg *alg, | |
155 | struct crypto_dump_info *info) | |
156 | { | |
157 | struct sk_buff *in_skb = info->in_skb; | |
158 | struct sk_buff *skb = info->out_skb; | |
159 | struct nlmsghdr *nlh; | |
160 | struct crypto_user_alg *ualg; | |
161 | int err = 0; | |
162 | ||
15e47304 | 163 | nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq, |
a38f7907 SK |
164 | CRYPTO_MSG_GETALG, sizeof(*ualg), info->nlmsg_flags); |
165 | if (!nlh) { | |
166 | err = -EMSGSIZE; | |
167 | goto out; | |
168 | } | |
169 | ||
170 | ualg = nlmsg_data(nlh); | |
171 | ||
172 | err = crypto_report_one(alg, ualg, skb); | |
173 | if (err) { | |
174 | nlmsg_cancel(skb, nlh); | |
175 | goto out; | |
176 | } | |
177 | ||
178 | nlmsg_end(skb, nlh); | |
179 | ||
180 | out: | |
181 | return err; | |
182 | } | |
183 | ||
184 | static int crypto_report(struct sk_buff *in_skb, struct nlmsghdr *in_nlh, | |
185 | struct nlattr **attrs) | |
186 | { | |
91b05a7e | 187 | struct net *net = sock_net(in_skb->sk); |
a38f7907 SK |
188 | struct crypto_user_alg *p = nlmsg_data(in_nlh); |
189 | struct crypto_alg *alg; | |
190 | struct sk_buff *skb; | |
191 | struct crypto_dump_info info; | |
192 | int err; | |
193 | ||
8fd61d34 MK |
194 | if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name)) |
195 | return -EINVAL; | |
196 | ||
5d4a5e77 | 197 | alg = crypto_alg_match(p, 0); |
a38f7907 SK |
198 | if (!alg) |
199 | return -ENOENT; | |
200 | ||
016baaa1 | 201 | err = -ENOMEM; |
9a69b7ae | 202 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
a38f7907 | 203 | if (!skb) |
016baaa1 | 204 | goto drop_alg; |
a38f7907 SK |
205 | |
206 | info.in_skb = in_skb; | |
207 | info.out_skb = skb; | |
208 | info.nlmsg_seq = in_nlh->nlmsg_seq; | |
209 | info.nlmsg_flags = 0; | |
210 | ||
211 | err = crypto_report_alg(alg, &info); | |
016baaa1 HX |
212 | |
213 | drop_alg: | |
214 | crypto_mod_put(alg); | |
215 | ||
a38f7907 SK |
216 | if (err) |
217 | return err; | |
218 | ||
91b05a7e | 219 | return nlmsg_unicast(net->crypto_nlsk, skb, NETLINK_CB(in_skb).portid); |
a38f7907 SK |
220 | } |
221 | ||
222 | static int crypto_dump_report(struct sk_buff *skb, struct netlink_callback *cb) | |
223 | { | |
0ac6b8fb EB |
224 | const size_t start_pos = cb->args[0]; |
225 | size_t pos = 0; | |
a38f7907 | 226 | struct crypto_dump_info info; |
0ac6b8fb EB |
227 | struct crypto_alg *alg; |
228 | int res; | |
a38f7907 SK |
229 | |
230 | info.in_skb = cb->skb; | |
231 | info.out_skb = skb; | |
232 | info.nlmsg_seq = cb->nlh->nlmsg_seq; | |
233 | info.nlmsg_flags = NLM_F_MULTI; | |
234 | ||
0ac6b8fb | 235 | down_read(&crypto_alg_sem); |
a38f7907 | 236 | list_for_each_entry(alg, &crypto_alg_list, cra_list) { |
0ac6b8fb EB |
237 | if (pos >= start_pos) { |
238 | res = crypto_report_alg(alg, &info); | |
239 | if (res == -EMSGSIZE) | |
240 | break; | |
241 | if (res) | |
242 | goto out; | |
243 | } | |
244 | pos++; | |
a38f7907 | 245 | } |
0ac6b8fb EB |
246 | cb->args[0] = pos; |
247 | res = skb->len; | |
a38f7907 | 248 | out: |
0ac6b8fb EB |
249 | up_read(&crypto_alg_sem); |
250 | return res; | |
a38f7907 SK |
251 | } |
252 | ||
253 | static int crypto_dump_report_done(struct netlink_callback *cb) | |
254 | { | |
255 | return 0; | |
256 | } | |
257 | ||
258 | static int crypto_update_alg(struct sk_buff *skb, struct nlmsghdr *nlh, | |
259 | struct nlattr **attrs) | |
260 | { | |
261 | struct crypto_alg *alg; | |
262 | struct crypto_user_alg *p = nlmsg_data(nlh); | |
263 | struct nlattr *priority = attrs[CRYPTOCFGA_PRIORITY_VAL]; | |
264 | LIST_HEAD(list); | |
265 | ||
639b4ac6 | 266 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
c568398a MCO |
267 | return -EPERM; |
268 | ||
8fd61d34 MK |
269 | if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name)) |
270 | return -EINVAL; | |
271 | ||
a38f7907 SK |
272 | if (priority && !strlen(p->cru_driver_name)) |
273 | return -EINVAL; | |
274 | ||
275 | alg = crypto_alg_match(p, 1); | |
276 | if (!alg) | |
277 | return -ENOENT; | |
278 | ||
279 | down_write(&crypto_alg_sem); | |
280 | ||
281 | crypto_remove_spawns(alg, &list, NULL); | |
282 | ||
283 | if (priority) | |
284 | alg->cra_priority = nla_get_u32(priority); | |
285 | ||
286 | up_write(&crypto_alg_sem); | |
287 | ||
016baaa1 | 288 | crypto_mod_put(alg); |
a38f7907 SK |
289 | crypto_remove_final(&list); |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static int crypto_del_alg(struct sk_buff *skb, struct nlmsghdr *nlh, | |
295 | struct nlattr **attrs) | |
296 | { | |
297 | struct crypto_alg *alg; | |
298 | struct crypto_user_alg *p = nlmsg_data(nlh); | |
016baaa1 | 299 | int err; |
a38f7907 | 300 | |
639b4ac6 | 301 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
c568398a MCO |
302 | return -EPERM; |
303 | ||
8fd61d34 MK |
304 | if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name)) |
305 | return -EINVAL; | |
306 | ||
a38f7907 SK |
307 | alg = crypto_alg_match(p, 1); |
308 | if (!alg) | |
309 | return -ENOENT; | |
310 | ||
311 | /* We can not unregister core algorithms such as aes-generic. | |
312 | * We would loose the reference in the crypto_alg_list to this algorithm | |
313 | * if we try to unregister. Unregistering such an algorithm without | |
314 | * removing the module is not possible, so we restrict to crypto | |
315 | * instances that are build from templates. */ | |
016baaa1 | 316 | err = -EINVAL; |
a38f7907 | 317 | if (!(alg->cra_flags & CRYPTO_ALG_INSTANCE)) |
016baaa1 | 318 | goto drop_alg; |
a38f7907 | 319 | |
016baaa1 | 320 | err = -EBUSY; |
ce8614a3 | 321 | if (refcount_read(&alg->cra_refcnt) > 2) |
016baaa1 | 322 | goto drop_alg; |
a38f7907 | 323 | |
016baaa1 HX |
324 | err = crypto_unregister_instance((struct crypto_instance *)alg); |
325 | ||
326 | drop_alg: | |
327 | crypto_mod_put(alg); | |
328 | return err; | |
a38f7907 SK |
329 | } |
330 | ||
331 | static int crypto_add_alg(struct sk_buff *skb, struct nlmsghdr *nlh, | |
332 | struct nlattr **attrs) | |
333 | { | |
0cfdec7a | 334 | int exact = 0; |
a38f7907 SK |
335 | const char *name; |
336 | struct crypto_alg *alg; | |
337 | struct crypto_user_alg *p = nlmsg_data(nlh); | |
338 | struct nlattr *priority = attrs[CRYPTOCFGA_PRIORITY_VAL]; | |
339 | ||
639b4ac6 | 340 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
c568398a MCO |
341 | return -EPERM; |
342 | ||
8fd61d34 MK |
343 | if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name)) |
344 | return -EINVAL; | |
345 | ||
a38f7907 SK |
346 | if (strlen(p->cru_driver_name)) |
347 | exact = 1; | |
348 | ||
349 | if (priority && !exact) | |
350 | return -EINVAL; | |
351 | ||
352 | alg = crypto_alg_match(p, exact); | |
016baaa1 HX |
353 | if (alg) { |
354 | crypto_mod_put(alg); | |
a38f7907 | 355 | return -EEXIST; |
016baaa1 | 356 | } |
a38f7907 SK |
357 | |
358 | if (strlen(p->cru_driver_name)) | |
359 | name = p->cru_driver_name; | |
360 | else | |
361 | name = p->cru_name; | |
362 | ||
6cf80a29 | 363 | alg = crypto_alg_mod_lookup(name, p->cru_type, p->cru_mask); |
a38f7907 SK |
364 | if (IS_ERR(alg)) |
365 | return PTR_ERR(alg); | |
366 | ||
367 | down_write(&crypto_alg_sem); | |
368 | ||
369 | if (priority) | |
370 | alg->cra_priority = nla_get_u32(priority); | |
371 | ||
372 | up_write(&crypto_alg_sem); | |
373 | ||
374 | crypto_mod_put(alg); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
9aa867e4 HX |
379 | static int crypto_del_rng(struct sk_buff *skb, struct nlmsghdr *nlh, |
380 | struct nlattr **attrs) | |
381 | { | |
382 | if (!netlink_capable(skb, CAP_NET_ADMIN)) | |
383 | return -EPERM; | |
384 | return crypto_del_default_rng(); | |
385 | } | |
386 | ||
a38f7907 SK |
387 | #define MSGSIZE(type) sizeof(struct type) |
388 | ||
389 | static const int crypto_msg_min[CRYPTO_NR_MSGTYPES] = { | |
390 | [CRYPTO_MSG_NEWALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), | |
391 | [CRYPTO_MSG_DELALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), | |
392 | [CRYPTO_MSG_UPDATEALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), | |
055ddaac | 393 | [CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), |
9aa867e4 | 394 | [CRYPTO_MSG_DELRNG - CRYPTO_MSG_BASE] = 0, |
cac5818c | 395 | [CRYPTO_MSG_GETSTAT - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), |
a38f7907 SK |
396 | }; |
397 | ||
398 | static const struct nla_policy crypto_policy[CRYPTOCFGA_MAX+1] = { | |
399 | [CRYPTOCFGA_PRIORITY_VAL] = { .type = NLA_U32}, | |
400 | }; | |
401 | ||
402 | #undef MSGSIZE | |
403 | ||
a84fb791 | 404 | static const struct crypto_link { |
a38f7907 SK |
405 | int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **); |
406 | int (*dump)(struct sk_buff *, struct netlink_callback *); | |
407 | int (*done)(struct netlink_callback *); | |
408 | } crypto_dispatch[CRYPTO_NR_MSGTYPES] = { | |
409 | [CRYPTO_MSG_NEWALG - CRYPTO_MSG_BASE] = { .doit = crypto_add_alg}, | |
410 | [CRYPTO_MSG_DELALG - CRYPTO_MSG_BASE] = { .doit = crypto_del_alg}, | |
411 | [CRYPTO_MSG_UPDATEALG - CRYPTO_MSG_BASE] = { .doit = crypto_update_alg}, | |
412 | [CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE] = { .doit = crypto_report, | |
413 | .dump = crypto_dump_report, | |
414 | .done = crypto_dump_report_done}, | |
9aa867e4 | 415 | [CRYPTO_MSG_DELRNG - CRYPTO_MSG_BASE] = { .doit = crypto_del_rng }, |
0c99c2a0 | 416 | [CRYPTO_MSG_GETSTAT - CRYPTO_MSG_BASE] = { .doit = crypto_reportstat}, |
a38f7907 SK |
417 | }; |
418 | ||
2d4bc933 JB |
419 | static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, |
420 | struct netlink_ext_ack *extack) | |
a38f7907 | 421 | { |
91b05a7e | 422 | struct net *net = sock_net(skb->sk); |
a38f7907 | 423 | struct nlattr *attrs[CRYPTOCFGA_MAX+1]; |
a84fb791 | 424 | const struct crypto_link *link; |
a38f7907 SK |
425 | int type, err; |
426 | ||
427 | type = nlh->nlmsg_type; | |
428 | if (type > CRYPTO_MSG_MAX) | |
429 | return -EINVAL; | |
430 | ||
431 | type -= CRYPTO_MSG_BASE; | |
432 | link = &crypto_dispatch[type]; | |
433 | ||
a38f7907 SK |
434 | if ((type == (CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE) && |
435 | (nlh->nlmsg_flags & NLM_F_DUMP))) { | |
5219a534 | 436 | struct crypto_alg *alg; |
0ac6b8fb | 437 | unsigned long dump_alloc = 0; |
5219a534 | 438 | |
a38f7907 SK |
439 | if (link->dump == NULL) |
440 | return -EINVAL; | |
5219a534 | 441 | |
63e41ebc | 442 | down_read(&crypto_alg_sem); |
5219a534 SK |
443 | list_for_each_entry(alg, &crypto_alg_list, cra_list) |
444 | dump_alloc += CRYPTO_REPORT_MAXSIZE; | |
0ac6b8fb | 445 | up_read(&crypto_alg_sem); |
5219a534 | 446 | |
80d326fa PNA |
447 | { |
448 | struct netlink_dump_control c = { | |
449 | .dump = link->dump, | |
450 | .done = link->done, | |
0ac6b8fb | 451 | .min_dump_alloc = min(dump_alloc, 65535UL), |
80d326fa | 452 | }; |
91b05a7e | 453 | err = netlink_dump_start(net->crypto_nlsk, skb, nlh, &c); |
80d326fa | 454 | } |
63e41ebc MK |
455 | |
456 | return err; | |
a38f7907 SK |
457 | } |
458 | ||
8cb08174 JB |
459 | err = nlmsg_parse_deprecated(nlh, crypto_msg_min[type], attrs, |
460 | CRYPTOCFGA_MAX, crypto_policy, extack); | |
fd2efd93 HX |
461 | if (err < 0) |
462 | return err; | |
a38f7907 SK |
463 | |
464 | if (link->doit == NULL) | |
465 | return -EINVAL; | |
466 | ||
467 | return link->doit(skb, nlh, attrs); | |
468 | } | |
469 | ||
470 | static void crypto_netlink_rcv(struct sk_buff *skb) | |
471 | { | |
472 | mutex_lock(&crypto_cfg_mutex); | |
473 | netlink_rcv_skb(skb, &crypto_user_rcv_msg); | |
474 | mutex_unlock(&crypto_cfg_mutex); | |
475 | } | |
476 | ||
91b05a7e | 477 | static int __net_init crypto_netlink_init(struct net *net) |
a38f7907 | 478 | { |
a31f2d17 PNA |
479 | struct netlink_kernel_cfg cfg = { |
480 | .input = crypto_netlink_rcv, | |
481 | }; | |
482 | ||
91b05a7e OM |
483 | net->crypto_nlsk = netlink_kernel_create(net, NETLINK_CRYPTO, &cfg); |
484 | return net->crypto_nlsk == NULL ? -ENOMEM : 0; | |
485 | } | |
a38f7907 | 486 | |
91b05a7e OM |
487 | static void __net_exit crypto_netlink_exit(struct net *net) |
488 | { | |
489 | netlink_kernel_release(net->crypto_nlsk); | |
490 | net->crypto_nlsk = NULL; | |
491 | } | |
492 | ||
493 | static struct pernet_operations crypto_netlink_net_ops = { | |
494 | .init = crypto_netlink_init, | |
495 | .exit = crypto_netlink_exit, | |
496 | }; | |
497 | ||
498 | static int __init crypto_user_init(void) | |
499 | { | |
500 | return register_pernet_subsys(&crypto_netlink_net_ops); | |
a38f7907 SK |
501 | } |
502 | ||
503 | static void __exit crypto_user_exit(void) | |
504 | { | |
91b05a7e | 505 | unregister_pernet_subsys(&crypto_netlink_net_ops); |
a38f7907 SK |
506 | } |
507 | ||
508 | module_init(crypto_user_init); | |
509 | module_exit(crypto_user_exit); | |
510 | MODULE_LICENSE("GPL"); | |
511 | MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>"); | |
512 | MODULE_DESCRIPTION("Crypto userspace configuration API"); | |
476c7fe2 | 513 | MODULE_ALIAS("net-pf-16-proto-21"); |