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16#include <crypto/internal/aead.h>
17#include <crypto/scatterwalk.h>
18#include <crypto/if_alg.h>
19#include <linux/init.h>
20#include <linux/list.h>
21#include <linux/kernel.h>
22#include <linux/mm.h>
23#include <linux/module.h>
24#include <linux/net.h>
25#include <net/sock.h>
26
27struct aead_sg_list {
28 unsigned int cur;
29 struct scatterlist sg[ALG_MAX_PAGES];
30};
31
32struct aead_async_rsgl {
33 struct af_alg_sgl sgl;
34 struct list_head list;
35};
36
37struct aead_async_req {
38 struct scatterlist *tsgl;
39 struct aead_async_rsgl first_rsgl;
40 struct list_head list;
41 struct kiocb *iocb;
42 unsigned int tsgls;
43 char iv[];
44};
45
46struct aead_ctx {
47 struct aead_sg_list tsgl;
48 struct aead_async_rsgl first_rsgl;
49 struct list_head list;
50
51 void *iv;
52
53 struct af_alg_completion completion;
54
55 unsigned long used;
56
57 unsigned int len;
58 bool more;
59 bool merge;
60 bool enc;
61
62 size_t aead_assoclen;
63 struct aead_request aead_req;
64};
65
66static inline int aead_sndbuf(struct sock *sk)
67{
68 struct alg_sock *ask = alg_sk(sk);
69 struct aead_ctx *ctx = ask->private;
70
71 return max_t(int, max_t(int, sk->sk_sndbuf & PAGE_MASK, PAGE_SIZE) -
72 ctx->used, 0);
73}
74
75static inline bool aead_writable(struct sock *sk)
76{
77 return PAGE_SIZE <= aead_sndbuf(sk);
78}
79
80static inline bool aead_sufficient_data(struct aead_ctx *ctx)
81{
82 unsigned as = crypto_aead_authsize(crypto_aead_reqtfm(&ctx->aead_req));
83
84
85
86
87
88 return ctx->used >= ctx->aead_assoclen + (ctx->enc ? 0 : as);
89}
90
91static void aead_reset_ctx(struct aead_ctx *ctx)
92{
93 struct aead_sg_list *sgl = &ctx->tsgl;
94
95 sg_init_table(sgl->sg, ALG_MAX_PAGES);
96 sgl->cur = 0;
97 ctx->used = 0;
98 ctx->more = 0;
99 ctx->merge = 0;
100}
101
102static void aead_put_sgl(struct sock *sk)
103{
104 struct alg_sock *ask = alg_sk(sk);
105 struct aead_ctx *ctx = ask->private;
106 struct aead_sg_list *sgl = &ctx->tsgl;
107 struct scatterlist *sg = sgl->sg;
108 unsigned int i;
109
110 for (i = 0; i < sgl->cur; i++) {
111 if (!sg_page(sg + i))
112 continue;
113
114 put_page(sg_page(sg + i));
115 sg_assign_page(sg + i, NULL);
116 }
117 aead_reset_ctx(ctx);
118}
119
120static void aead_wmem_wakeup(struct sock *sk)
121{
122 struct socket_wq *wq;
123
124 if (!aead_writable(sk))
125 return;
126
127 rcu_read_lock();
128 wq = rcu_dereference(sk->sk_wq);
129 if (skwq_has_sleeper(wq))
130 wake_up_interruptible_sync_poll(&wq->wait, POLLIN |
131 POLLRDNORM |
132 POLLRDBAND);
133 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
134 rcu_read_unlock();
135}
136
137static int aead_wait_for_data(struct sock *sk, unsigned flags)
138{
139 struct alg_sock *ask = alg_sk(sk);
140 struct aead_ctx *ctx = ask->private;
141 long timeout;
142 DEFINE_WAIT(wait);
143 int err = -ERESTARTSYS;
144
145 if (flags & MSG_DONTWAIT)
146 return -EAGAIN;
147
148 sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk);
149
150 for (;;) {
151 if (signal_pending(current))
152 break;
153 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
154 timeout = MAX_SCHEDULE_TIMEOUT;
155 if (sk_wait_event(sk, &timeout, !ctx->more)) {
156 err = 0;
157 break;
158 }
159 }
160 finish_wait(sk_sleep(sk), &wait);
161
162 sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk);
163
164 return err;
165}
166
167static void aead_data_wakeup(struct sock *sk)
168{
169 struct alg_sock *ask = alg_sk(sk);
170 struct aead_ctx *ctx = ask->private;
171 struct socket_wq *wq;
172
173 if (ctx->more)
174 return;
175 if (!ctx->used)
176 return;
177
178 rcu_read_lock();
179 wq = rcu_dereference(sk->sk_wq);
180 if (skwq_has_sleeper(wq))
181 wake_up_interruptible_sync_poll(&wq->wait, POLLOUT |
182 POLLRDNORM |
183 POLLRDBAND);
184 sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
185 rcu_read_unlock();
186}
187
188static int aead_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
189{
190 struct sock *sk = sock->sk;
191 struct alg_sock *ask = alg_sk(sk);
192 struct aead_ctx *ctx = ask->private;
193 unsigned ivsize =
194 crypto_aead_ivsize(crypto_aead_reqtfm(&ctx->aead_req));
195 struct aead_sg_list *sgl = &ctx->tsgl;
196 struct af_alg_control con = {};
197 long copied = 0;
198 bool enc = 0;
199 bool init = 0;
200 int err = -EINVAL;
201
202 if (msg->msg_controllen) {
203 err = af_alg_cmsg_send(msg, &con);
204 if (err)
205 return err;
206
207 init = 1;
208 switch (con.op) {
209 case ALG_OP_ENCRYPT:
210 enc = 1;
211 break;
212 case ALG_OP_DECRYPT:
213 enc = 0;
214 break;
215 default:
216 return -EINVAL;
217 }
218
219 if (con.iv && con.iv->ivlen != ivsize)
220 return -EINVAL;
221 }
222
223 lock_sock(sk);
224 if (!ctx->more && ctx->used)
225 goto unlock;
226
227 if (init) {
228 ctx->enc = enc;
229 if (con.iv)
230 memcpy(ctx->iv, con.iv->iv, ivsize);
231
232 ctx->aead_assoclen = con.aead_assoclen;
233 }
234
235 while (size) {
236 size_t len = size;
237 struct scatterlist *sg = NULL;
238
239
240 if (ctx->merge) {
241 sg = sgl->sg + sgl->cur - 1;
242 len = min_t(unsigned long, len,
243 PAGE_SIZE - sg->offset - sg->length);
244 err = memcpy_from_msg(page_address(sg_page(sg)) +
245 sg->offset + sg->length,
246 msg, len);
247 if (err)
248 goto unlock;
249
250 sg->length += len;
251 ctx->merge = (sg->offset + sg->length) &
252 (PAGE_SIZE - 1);
253
254 ctx->used += len;
255 copied += len;
256 size -= len;
257 continue;
258 }
259
260 if (!aead_writable(sk)) {
261
262 aead_put_sgl(sk);
263 err = -EMSGSIZE;
264 goto unlock;
265 }
266
267
268 len = min_t(unsigned long, size, aead_sndbuf(sk));
269 while (len) {
270 size_t plen = 0;
271
272 if (sgl->cur >= ALG_MAX_PAGES) {
273 aead_put_sgl(sk);
274 err = -E2BIG;
275 goto unlock;
276 }
277
278 sg = sgl->sg + sgl->cur;
279 plen = min_t(size_t, len, PAGE_SIZE);
280
281 sg_assign_page(sg, alloc_page(GFP_KERNEL));
282 err = -ENOMEM;
283 if (!sg_page(sg))
284 goto unlock;
285
286 err = memcpy_from_msg(page_address(sg_page(sg)),
287 msg, plen);
288 if (err) {
289 __free_page(sg_page(sg));
290 sg_assign_page(sg, NULL);
291 goto unlock;
292 }
293
294 sg->offset = 0;
295 sg->length = plen;
296 len -= plen;
297 ctx->used += plen;
298 copied += plen;
299 sgl->cur++;
300 size -= plen;
301 ctx->merge = plen & (PAGE_SIZE - 1);
302 }
303 }
304
305 err = 0;
306
307 ctx->more = msg->msg_flags & MSG_MORE;
308 if (!ctx->more && !aead_sufficient_data(ctx)) {
309 aead_put_sgl(sk);
310 err = -EMSGSIZE;
311 }
312
313unlock:
314 aead_data_wakeup(sk);
315 release_sock(sk);
316
317 return err ?: copied;
318}
319
320static ssize_t aead_sendpage(struct socket *sock, struct page *page,
321 int offset, size_t size, int flags)
322{
323 struct sock *sk = sock->sk;
324 struct alg_sock *ask = alg_sk(sk);
325 struct aead_ctx *ctx = ask->private;
326 struct aead_sg_list *sgl = &ctx->tsgl;
327 int err = -EINVAL;
328
329 if (flags & MSG_SENDPAGE_NOTLAST)
330 flags |= MSG_MORE;
331
332 if (sgl->cur >= ALG_MAX_PAGES)
333 return -E2BIG;
334
335 lock_sock(sk);
336 if (!ctx->more && ctx->used)
337 goto unlock;
338
339 if (!size)
340 goto done;
341
342 if (!aead_writable(sk)) {
343
344 aead_put_sgl(sk);
345 err = -EMSGSIZE;
346 goto unlock;
347 }
348
349 ctx->merge = 0;
350
351 get_page(page);
352 sg_set_page(sgl->sg + sgl->cur, page, size, offset);
353 sgl->cur++;
354 ctx->used += size;
355
356 err = 0;
357
358done:
359 ctx->more = flags & MSG_MORE;
360 if (!ctx->more && !aead_sufficient_data(ctx)) {
361 aead_put_sgl(sk);
362 err = -EMSGSIZE;
363 }
364
365unlock:
366 aead_data_wakeup(sk);
367 release_sock(sk);
368
369 return err ?: size;
370}
371
372#define GET_ASYM_REQ(req, tfm) (struct aead_async_req *) \
373 ((char *)req + sizeof(struct aead_request) + \
374 crypto_aead_reqsize(tfm))
375
376 #define GET_REQ_SIZE(tfm) sizeof(struct aead_async_req) + \
377 crypto_aead_reqsize(tfm) + crypto_aead_ivsize(tfm) + \
378 sizeof(struct aead_request)
379
380static void aead_async_cb(struct crypto_async_request *_req, int err)
381{
382 struct sock *sk = _req->data;
383 struct alg_sock *ask = alg_sk(sk);
384 struct aead_ctx *ctx = ask->private;
385 struct crypto_aead *tfm = crypto_aead_reqtfm(&ctx->aead_req);
386 struct aead_request *req = aead_request_cast(_req);
387 struct aead_async_req *areq = GET_ASYM_REQ(req, tfm);
388 struct scatterlist *sg = areq->tsgl;
389 struct aead_async_rsgl *rsgl;
390 struct kiocb *iocb = areq->iocb;
391 unsigned int i, reqlen = GET_REQ_SIZE(tfm);
392
393 list_for_each_entry(rsgl, &areq->list, list) {
394 af_alg_free_sg(&rsgl->sgl);
395 if (rsgl != &areq->first_rsgl)
396 sock_kfree_s(sk, rsgl, sizeof(*rsgl));
397 }
398
399 for (i = 0; i < areq->tsgls; i++)
400 put_page(sg_page(sg + i));
401
402 sock_kfree_s(sk, areq->tsgl, sizeof(*areq->tsgl) * areq->tsgls);
403 sock_kfree_s(sk, req, reqlen);
404 __sock_put(sk);
405 iocb->ki_complete(iocb, err, err);
406}
407
408static int aead_recvmsg_async(struct socket *sock, struct msghdr *msg,
409 int flags)
410{
411 struct sock *sk = sock->sk;
412 struct alg_sock *ask = alg_sk(sk);
413 struct aead_ctx *ctx = ask->private;
414 struct crypto_aead *tfm = crypto_aead_reqtfm(&ctx->aead_req);
415 struct aead_async_req *areq;
416 struct aead_request *req = NULL;
417 struct aead_sg_list *sgl = &ctx->tsgl;
418 struct aead_async_rsgl *last_rsgl = NULL, *rsgl;
419 unsigned int as = crypto_aead_authsize(tfm);
420 unsigned int i, reqlen = GET_REQ_SIZE(tfm);
421 int err = -ENOMEM;
422 unsigned long used;
423 size_t outlen = 0;
424 size_t usedpages = 0;
425
426 lock_sock(sk);
427 if (ctx->more) {
428 err = aead_wait_for_data(sk, flags);
429 if (err)
430 goto unlock;
431 }
432
433 if (!aead_sufficient_data(ctx))
434 goto unlock;
435
436 used = ctx->used;
437 if (ctx->enc)
438 outlen = used + as;
439 else
440 outlen = used - as;
441
442 req = sock_kmalloc(sk, reqlen, GFP_KERNEL);
443 if (unlikely(!req))
444 goto unlock;
445
446 areq = GET_ASYM_REQ(req, tfm);
447 memset(&areq->first_rsgl, '\0', sizeof(areq->first_rsgl));
448 INIT_LIST_HEAD(&areq->list);
449 areq->iocb = msg->msg_iocb;
450 memcpy(areq->iv, ctx->iv, crypto_aead_ivsize(tfm));
451 aead_request_set_tfm(req, tfm);
452 aead_request_set_ad(req, ctx->aead_assoclen);
453 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
454 aead_async_cb, sk);
455 used -= ctx->aead_assoclen;
456
457
458 areq->tsgl = sock_kmalloc(sk, sizeof(*areq->tsgl) * sgl->cur,
459 GFP_KERNEL);
460 if (unlikely(!areq->tsgl))
461 goto free;
462
463 sg_init_table(areq->tsgl, sgl->cur);
464 for (i = 0; i < sgl->cur; i++)
465 sg_set_page(&areq->tsgl[i], sg_page(&sgl->sg[i]),
466 sgl->sg[i].length, sgl->sg[i].offset);
467
468 areq->tsgls = sgl->cur;
469
470
471 while (outlen > usedpages && iov_iter_count(&msg->msg_iter)) {
472 size_t seglen = min_t(size_t, iov_iter_count(&msg->msg_iter),
473 (outlen - usedpages));
474
475 if (list_empty(&areq->list)) {
476 rsgl = &areq->first_rsgl;
477
478 } else {
479 rsgl = sock_kmalloc(sk, sizeof(*rsgl), GFP_KERNEL);
480 if (unlikely(!rsgl)) {
481 err = -ENOMEM;
482 goto free;
483 }
484 }
485 rsgl->sgl.npages = 0;
486 list_add_tail(&rsgl->list, &areq->list);
487
488
489 err = af_alg_make_sg(&rsgl->sgl, &msg->msg_iter, seglen);
490 if (err < 0)
491 goto free;
492
493 usedpages += err;
494
495
496 if (last_rsgl)
497 af_alg_link_sg(&last_rsgl->sgl, &rsgl->sgl);
498
499 last_rsgl = rsgl;
500
501 iov_iter_advance(&msg->msg_iter, err);
502 }
503
504
505 if (usedpages < outlen) {
506 err = -EINVAL;
507 goto unlock;
508 }
509
510 aead_request_set_crypt(req, areq->tsgl, areq->first_rsgl.sgl.sg, used,
511 areq->iv);
512 err = ctx->enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
513 if (err) {
514 if (err == -EINPROGRESS) {
515 sock_hold(sk);
516 err = -EIOCBQUEUED;
517 aead_reset_ctx(ctx);
518 goto unlock;
519 } else if (err == -EBADMSG) {
520 aead_put_sgl(sk);
521 }
522 goto free;
523 }
524 aead_put_sgl(sk);
525
526free:
527 list_for_each_entry(rsgl, &areq->list, list) {
528 af_alg_free_sg(&rsgl->sgl);
529 if (rsgl != &areq->first_rsgl)
530 sock_kfree_s(sk, rsgl, sizeof(*rsgl));
531 }
532 if (areq->tsgl)
533 sock_kfree_s(sk, areq->tsgl, sizeof(*areq->tsgl) * areq->tsgls);
534 if (req)
535 sock_kfree_s(sk, req, reqlen);
536unlock:
537 aead_wmem_wakeup(sk);
538 release_sock(sk);
539 return err ? err : outlen;
540}
541
542static int aead_recvmsg_sync(struct socket *sock, struct msghdr *msg, int flags)
543{
544 struct sock *sk = sock->sk;
545 struct alg_sock *ask = alg_sk(sk);
546 struct aead_ctx *ctx = ask->private;
547 unsigned as = crypto_aead_authsize(crypto_aead_reqtfm(&ctx->aead_req));
548 struct aead_sg_list *sgl = &ctx->tsgl;
549 struct aead_async_rsgl *last_rsgl = NULL;
550 struct aead_async_rsgl *rsgl, *tmp;
551 int err = -EINVAL;
552 unsigned long used = 0;
553 size_t outlen = 0;
554 size_t usedpages = 0;
555
556 lock_sock(sk);
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573 if (ctx->more) {
574 err = aead_wait_for_data(sk, flags);
575 if (err)
576 goto unlock;
577 }
578
579
580 used = ctx->used;
581
582
583
584
585
586
587
588
589
590
591 if (!aead_sufficient_data(ctx))
592 goto unlock;
593
594
595
596
597
598
599
600
601
602 if (ctx->enc)
603 outlen = used + as;
604 else
605 outlen = used - as;
606
607
608
609
610
611 used -= ctx->aead_assoclen;
612
613
614 while (outlen > usedpages && iov_iter_count(&msg->msg_iter)) {
615 size_t seglen = min_t(size_t, iov_iter_count(&msg->msg_iter),
616 (outlen - usedpages));
617
618 if (list_empty(&ctx->list)) {
619 rsgl = &ctx->first_rsgl;
620 } else {
621 rsgl = sock_kmalloc(sk, sizeof(*rsgl), GFP_KERNEL);
622 if (unlikely(!rsgl)) {
623 err = -ENOMEM;
624 goto unlock;
625 }
626 }
627 rsgl->sgl.npages = 0;
628 list_add_tail(&rsgl->list, &ctx->list);
629
630
631 err = af_alg_make_sg(&rsgl->sgl, &msg->msg_iter, seglen);
632 if (err < 0)
633 goto unlock;
634 usedpages += err;
635
636 if (last_rsgl)
637 af_alg_link_sg(&last_rsgl->sgl, &rsgl->sgl);
638
639 last_rsgl = rsgl;
640
641 iov_iter_advance(&msg->msg_iter, err);
642 }
643
644
645 if (usedpages < outlen) {
646 err = -EINVAL;
647 goto unlock;
648 }
649
650 sg_mark_end(sgl->sg + sgl->cur - 1);
651 aead_request_set_crypt(&ctx->aead_req, sgl->sg, ctx->first_rsgl.sgl.sg,
652 used, ctx->iv);
653 aead_request_set_ad(&ctx->aead_req, ctx->aead_assoclen);
654
655 err = af_alg_wait_for_completion(ctx->enc ?
656 crypto_aead_encrypt(&ctx->aead_req) :
657 crypto_aead_decrypt(&ctx->aead_req),
658 &ctx->completion);
659
660 if (err) {
661
662 if (err == -EBADMSG)
663 aead_put_sgl(sk);
664
665 goto unlock;
666 }
667
668 aead_put_sgl(sk);
669 err = 0;
670
671unlock:
672 list_for_each_entry_safe(rsgl, tmp, &ctx->list, list) {
673 af_alg_free_sg(&rsgl->sgl);
674 if (rsgl != &ctx->first_rsgl)
675 sock_kfree_s(sk, rsgl, sizeof(*rsgl));
676 list_del(&rsgl->list);
677 }
678 INIT_LIST_HEAD(&ctx->list);
679 aead_wmem_wakeup(sk);
680 release_sock(sk);
681
682 return err ? err : outlen;
683}
684
685static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
686 int flags)
687{
688 return (msg->msg_iocb && !is_sync_kiocb(msg->msg_iocb)) ?
689 aead_recvmsg_async(sock, msg, flags) :
690 aead_recvmsg_sync(sock, msg, flags);
691}
692
693static unsigned int aead_poll(struct file *file, struct socket *sock,
694 poll_table *wait)
695{
696 struct sock *sk = sock->sk;
697 struct alg_sock *ask = alg_sk(sk);
698 struct aead_ctx *ctx = ask->private;
699 unsigned int mask;
700
701 sock_poll_wait(file, sk_sleep(sk), wait);
702 mask = 0;
703
704 if (!ctx->more)
705 mask |= POLLIN | POLLRDNORM;
706
707 if (aead_writable(sk))
708 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
709
710 return mask;
711}
712
713static struct proto_ops algif_aead_ops = {
714 .family = PF_ALG,
715
716 .connect = sock_no_connect,
717 .socketpair = sock_no_socketpair,
718 .getname = sock_no_getname,
719 .ioctl = sock_no_ioctl,
720 .listen = sock_no_listen,
721 .shutdown = sock_no_shutdown,
722 .getsockopt = sock_no_getsockopt,
723 .mmap = sock_no_mmap,
724 .bind = sock_no_bind,
725 .accept = sock_no_accept,
726 .setsockopt = sock_no_setsockopt,
727
728 .release = af_alg_release,
729 .sendmsg = aead_sendmsg,
730 .sendpage = aead_sendpage,
731 .recvmsg = aead_recvmsg,
732 .poll = aead_poll,
733};
734
735static void *aead_bind(const char *name, u32 type, u32 mask)
736{
737 return crypto_alloc_aead(name, type, mask);
738}
739
740static void aead_release(void *private)
741{
742 crypto_free_aead(private);
743}
744
745static int aead_setauthsize(void *private, unsigned int authsize)
746{
747 return crypto_aead_setauthsize(private, authsize);
748}
749
750static int aead_setkey(void *private, const u8 *key, unsigned int keylen)
751{
752 return crypto_aead_setkey(private, key, keylen);
753}
754
755static void aead_sock_destruct(struct sock *sk)
756{
757 struct alg_sock *ask = alg_sk(sk);
758 struct aead_ctx *ctx = ask->private;
759 unsigned int ivlen = crypto_aead_ivsize(
760 crypto_aead_reqtfm(&ctx->aead_req));
761
762 WARN_ON(atomic_read(&sk->sk_refcnt) != 0);
763 aead_put_sgl(sk);
764 sock_kzfree_s(sk, ctx->iv, ivlen);
765 sock_kfree_s(sk, ctx, ctx->len);
766 af_alg_release_parent(sk);
767}
768
769static int aead_accept_parent(void *private, struct sock *sk)
770{
771 struct aead_ctx *ctx;
772 struct alg_sock *ask = alg_sk(sk);
773 unsigned int len = sizeof(*ctx) + crypto_aead_reqsize(private);
774 unsigned int ivlen = crypto_aead_ivsize(private);
775
776 ctx = sock_kmalloc(sk, len, GFP_KERNEL);
777 if (!ctx)
778 return -ENOMEM;
779 memset(ctx, 0, len);
780
781 ctx->iv = sock_kmalloc(sk, ivlen, GFP_KERNEL);
782 if (!ctx->iv) {
783 sock_kfree_s(sk, ctx, len);
784 return -ENOMEM;
785 }
786 memset(ctx->iv, 0, ivlen);
787
788 ctx->len = len;
789 ctx->used = 0;
790 ctx->more = 0;
791 ctx->merge = 0;
792 ctx->enc = 0;
793 ctx->tsgl.cur = 0;
794 ctx->aead_assoclen = 0;
795 af_alg_init_completion(&ctx->completion);
796 sg_init_table(ctx->tsgl.sg, ALG_MAX_PAGES);
797 INIT_LIST_HEAD(&ctx->list);
798
799 ask->private = ctx;
800
801 aead_request_set_tfm(&ctx->aead_req, private);
802 aead_request_set_callback(&ctx->aead_req, CRYPTO_TFM_REQ_MAY_BACKLOG,
803 af_alg_complete, &ctx->completion);
804
805 sk->sk_destruct = aead_sock_destruct;
806
807 return 0;
808}
809
810static const struct af_alg_type algif_type_aead = {
811 .bind = aead_bind,
812 .release = aead_release,
813 .setkey = aead_setkey,
814 .setauthsize = aead_setauthsize,
815 .accept = aead_accept_parent,
816 .ops = &algif_aead_ops,
817 .name = "aead",
818 .owner = THIS_MODULE
819};
820
821static int __init algif_aead_init(void)
822{
823 return af_alg_register_type(&algif_type_aead);
824}
825
826static void __exit algif_aead_exit(void)
827{
828 int err = af_alg_unregister_type(&algif_type_aead);
829 BUG_ON(err);
830}
831
832module_init(algif_aead_init);
833module_exit(algif_aead_exit);
834MODULE_LICENSE("GPL");
835MODULE_AUTHOR("Stephan Mueller <smueller@chronox.de>");
836MODULE_DESCRIPTION("AEAD kernel crypto API user space interface");
837
