1 /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */
4 * Copyright (c) 2001 Theo de Raadt
5 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * Effort sponsored in part by the Defense Advanced Research Projects
31 * Agency (DARPA) and Air Force Research Laboratory, Air Force
32 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include "opt_compat.h"
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/malloc.h>
45 #include <sys/mutex.h>
46 #include <sys/sysctl.h>
48 #include <sys/filedesc.h>
49 #include <sys/errno.h>
51 #include <sys/random.h>
53 #include <sys/kernel.h>
54 #include <sys/module.h>
55 #include <sys/fcntl.h>
58 #include <opencrypto/cryptodev.h>
59 #include <opencrypto/xform.h>
61 #ifdef COMPAT_FREEBSD32
62 #include <sys/mount.h>
63 #include <compat/freebsd32/freebsd32.h>
75 struct session2_op32 {
108 struct crparam32 crk_param[CRK_MAXPARAM];
111 struct cryptotstat32 {
112 struct timespec32 acc;
113 struct timespec32 min;
114 struct timespec32 max;
118 struct cryptostats32 {
126 u_int32_t cs_kblocks;
127 struct cryptotstat32 cs_invoke;
128 struct cryptotstat32 cs_done;
129 struct cryptotstat32 cs_cb;
130 struct cryptotstat32 cs_finis;
133 #define CIOCGSESSION32 _IOWR('c', 101, struct session_op32)
134 #define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32)
135 #define CIOCKEY32 _IOWR('c', 104, struct crypt_kop32)
136 #define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32)
137 #define CIOCKEY232 _IOWR('c', 107, struct crypt_kop32)
140 session_op_from_32(const struct session_op32 *from, struct session_op *to)
143 CP(*from, *to, cipher);
145 CP(*from, *to, keylen);
146 PTRIN_CP(*from, *to, key);
147 CP(*from, *to, mackeylen);
148 PTRIN_CP(*from, *to, mackey);
153 session2_op_from_32(const struct session2_op32 *from, struct session2_op *to)
156 session_op_from_32((const struct session_op32 *)from,
157 (struct session_op *)to);
158 CP(*from, *to, crid);
162 session_op_to_32(const struct session_op *from, struct session_op32 *to)
165 CP(*from, *to, cipher);
167 CP(*from, *to, keylen);
168 PTROUT_CP(*from, *to, key);
169 CP(*from, *to, mackeylen);
170 PTROUT_CP(*from, *to, mackey);
175 session2_op_to_32(const struct session2_op *from, struct session2_op32 *to)
178 session_op_to_32((const struct session_op *)from,
179 (struct session_op32 *)to);
180 CP(*from, *to, crid);
184 crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to)
189 CP(*from, *to, flags);
191 PTRIN_CP(*from, *to, src);
192 PTRIN_CP(*from, *to, dst);
193 PTRIN_CP(*from, *to, mac);
194 PTRIN_CP(*from, *to, iv);
198 crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to)
203 CP(*from, *to, flags);
205 PTROUT_CP(*from, *to, src);
206 PTROUT_CP(*from, *to, dst);
207 PTROUT_CP(*from, *to, mac);
208 PTROUT_CP(*from, *to, iv);
212 crparam_from_32(const struct crparam32 *from, struct crparam *to)
215 PTRIN_CP(*from, *to, crp_p);
216 CP(*from, *to, crp_nbits);
220 crparam_to_32(const struct crparam *from, struct crparam32 *to)
223 PTROUT_CP(*from, *to, crp_p);
224 CP(*from, *to, crp_nbits);
228 crypt_kop_from_32(const struct crypt_kop32 *from, struct crypt_kop *to)
232 CP(*from, *to, crk_op);
233 CP(*from, *to, crk_status);
234 CP(*from, *to, crk_iparams);
235 CP(*from, *to, crk_oparams);
236 CP(*from, *to, crk_crid);
237 for (i = 0; i < CRK_MAXPARAM; i++)
238 crparam_from_32(&from->crk_param[i], &to->crk_param[i]);
242 crypt_kop_to_32(const struct crypt_kop *from, struct crypt_kop32 *to)
246 CP(*from, *to, crk_op);
247 CP(*from, *to, crk_status);
248 CP(*from, *to, crk_iparams);
249 CP(*from, *to, crk_oparams);
250 CP(*from, *to, crk_crid);
251 for (i = 0; i < CRK_MAXPARAM; i++)
252 crparam_to_32(&from->crk_param[i], &to->crk_param[i]);
257 TAILQ_ENTRY(csession) next;
260 struct mtx lock; /* for op submission */
263 struct enc_xform *txform;
265 struct auth_hash *thash;
269 u_char tmp_iv[EALG_MAX_BLOCK_LEN];
280 TAILQ_HEAD(csessionlist, csession) csessions;
284 static int cryptof_rw(struct file *fp, struct uio *uio,
285 struct ucred *cred, int flags, struct thread *);
286 static int cryptof_truncate(struct file *, off_t, struct ucred *,
288 static int cryptof_ioctl(struct file *, u_long, void *,
289 struct ucred *, struct thread *);
290 static int cryptof_poll(struct file *, int, struct ucred *, struct thread *);
291 static int cryptof_kqfilter(struct file *, struct knote *);
292 static int cryptof_stat(struct file *, struct stat *,
293 struct ucred *, struct thread *);
294 static int cryptof_close(struct file *, struct thread *);
296 static struct fileops cryptofops = {
297 .fo_read = cryptof_rw,
298 .fo_write = cryptof_rw,
299 .fo_truncate = cryptof_truncate,
300 .fo_ioctl = cryptof_ioctl,
301 .fo_poll = cryptof_poll,
302 .fo_kqfilter = cryptof_kqfilter,
303 .fo_stat = cryptof_stat,
304 .fo_close = cryptof_close,
305 .fo_chmod = invfo_chmod,
306 .fo_chown = invfo_chown,
307 .fo_sendfile = invfo_sendfile,
310 static struct csession *csefind(struct fcrypt *, u_int);
311 static int csedelete(struct fcrypt *, struct csession *);
312 static struct csession *cseadd(struct fcrypt *, struct csession *);
313 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t,
314 u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *,
316 static int csefree(struct csession *);
318 static int cryptodev_op(struct csession *, struct crypt_op *,
319 struct ucred *, struct thread *td);
320 static int cryptodev_key(struct crypt_kop *);
321 static int cryptodev_find(struct crypt_find_op *);
327 struct ucred *active_cred,
339 struct ucred *active_cred,
347 * Check a crypto identifier to see if it requested
348 * a software device/driver. This can be done either
349 * by device name/class or through search constraints.
352 checkforsoftware(int crid)
354 if (crid & CRYPTOCAP_F_SOFTWARE)
355 return EINVAL; /* XXX */
356 if ((crid & CRYPTOCAP_F_HARDWARE) == 0 &&
357 (crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0)
358 return EINVAL; /* XXX */
368 struct ucred *active_cred,
371 #define SES2(p) ((struct session2_op *)p)
372 struct cryptoini cria, crie;
373 struct fcrypt *fcr = fp->f_data;
374 struct csession *cse;
375 struct session_op *sop;
376 struct crypt_op *cop;
377 struct enc_xform *txform = NULL;
378 struct auth_hash *thash = NULL;
379 struct crypt_kop *kop;
383 #ifdef COMPAT_FREEBSD32
384 struct session2_op sopc;
385 struct crypt_op copc;
386 struct crypt_kop kopc;
392 #ifdef COMPAT_FREEBSD32
394 case CIOCGSESSION232:
395 if (cmd == CIOCGSESSION32) {
396 session_op_from_32(data, (struct session_op *)&sopc);
397 sop = (struct session_op *)&sopc;
398 } else if (cmd == CIOCGSESSION232) {
399 session2_op_from_32(data, &sopc);
400 sop = (struct session_op *)&sopc;
403 sop = (struct session_op *)data;
404 switch (sop->cipher) {
408 txform = &enc_xform_des;
410 case CRYPTO_3DES_CBC:
411 txform = &enc_xform_3des;
414 txform = &enc_xform_blf;
416 case CRYPTO_CAST_CBC:
417 txform = &enc_xform_cast5;
419 case CRYPTO_SKIPJACK_CBC:
420 txform = &enc_xform_skipjack;
423 txform = &enc_xform_rijndael128;
426 txform = &enc_xform_aes_xts;
428 case CRYPTO_NULL_CBC:
429 txform = &enc_xform_null;
432 txform = &enc_xform_arc4;
434 case CRYPTO_CAMELLIA_CBC:
435 txform = &enc_xform_camellia;
444 case CRYPTO_MD5_HMAC:
445 thash = &auth_hash_hmac_md5;
447 case CRYPTO_SHA1_HMAC:
448 thash = &auth_hash_hmac_sha1;
450 case CRYPTO_SHA2_256_HMAC:
451 thash = &auth_hash_hmac_sha2_256;
453 case CRYPTO_SHA2_384_HMAC:
454 thash = &auth_hash_hmac_sha2_384;
456 case CRYPTO_SHA2_512_HMAC:
457 thash = &auth_hash_hmac_sha2_512;
459 case CRYPTO_RIPEMD160_HMAC:
460 thash = &auth_hash_hmac_ripemd_160;
464 thash = &auth_hash_md5;
467 thash = &auth_hash_sha1;
470 case CRYPTO_NULL_HMAC:
471 thash = &auth_hash_null;
477 bzero(&crie, sizeof(crie));
478 bzero(&cria, sizeof(cria));
481 crie.cri_alg = txform->type;
482 crie.cri_klen = sop->keylen * 8;
483 if (sop->keylen > txform->maxkey ||
484 sop->keylen < txform->minkey) {
489 crie.cri_key = malloc(crie.cri_klen / 8,
491 if ((error = copyin(sop->key, crie.cri_key,
495 crie.cri_next = &cria;
499 cria.cri_alg = thash->type;
500 cria.cri_klen = sop->mackeylen * 8;
501 if (sop->mackeylen != thash->keysize) {
507 cria.cri_key = malloc(cria.cri_klen / 8,
509 if ((error = copyin(sop->mackey, cria.cri_key,
515 /* NB: CIOCGSESSION2 has the crid */
516 if (cmd == CIOCGSESSION2
517 #ifdef COMPAT_FREEBSD32
518 || cmd == CIOCGSESSION232
521 crid = SES2(sop)->crid;
522 error = checkforsoftware(crid);
526 crid = CRYPTOCAP_F_HARDWARE;
527 error = crypto_newsession(&sid, (txform ? &crie : &cria), crid);
531 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen,
532 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform,
536 crypto_freesession(sid);
541 if (cmd == CIOCGSESSION2
542 #ifdef COMPAT_FREEBSD32
543 || cmd == CIOCGSESSION232
546 /* return hardware/driver id */
547 SES2(sop)->crid = CRYPTO_SESID2HID(cse->sid);
552 free(crie.cri_key, M_XDATA);
554 free(cria.cri_key, M_XDATA);
556 #ifdef COMPAT_FREEBSD32
558 if (cmd == CIOCGSESSION32)
559 session_op_to_32(sop, data);
560 else if (cmd == CIOCGSESSION232)
561 session2_op_to_32((struct session2_op *)sop,
567 ses = *(u_int32_t *)data;
568 cse = csefind(fcr, ses);
572 error = csefree(cse);
575 #ifdef COMPAT_FREEBSD32
577 if (cmd == CIOCCRYPT32) {
579 crypt_op_from_32(data, cop);
582 cop = (struct crypt_op *)data;
583 cse = csefind(fcr, cop->ses);
586 error = cryptodev_op(cse, cop, active_cred, td);
587 #ifdef COMPAT_FREEBSD32
588 if (error == 0 && cmd == CIOCCRYPT32)
589 crypt_op_to_32(cop, data);
594 #ifdef COMPAT_FREEBSD32
598 if (!crypto_userasymcrypto)
599 return (EPERM); /* XXX compat? */
600 #ifdef COMPAT_FREEBSD32
601 if (cmd == CIOCKEY32 || cmd == CIOCKEY232) {
603 crypt_kop_from_32(data, kop);
606 kop = (struct crypt_kop *)data;
608 #ifdef COMPAT_FREEBSD32
612 /* NB: crypto core enforces s/w driver use */
614 CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
617 error = cryptodev_key(kop);
619 #ifdef COMPAT_FREEBSD32
620 if (cmd == CIOCKEY32 || cmd == CIOCKEY232)
621 crypt_kop_to_32(kop, data);
625 if (!crypto_userasymcrypto) {
627 * NB: if user asym crypto operations are
628 * not permitted return "no algorithms"
629 * so well-behaved applications will just
630 * fallback to doing them in software.
634 error = crypto_getfeat((int *)data);
637 error = cryptodev_find((struct crypt_find_op *)data);
647 static int cryptodev_cb(void *);
652 struct csession *cse,
653 struct crypt_op *cop,
654 struct ucred *active_cred,
657 struct cryptop *crp = NULL;
658 struct cryptodesc *crde = NULL, *crda = NULL;
661 if (cop->len > 256*1024-4)
665 if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0)
669 cse->uio.uio_iov = &cse->iovec;
670 cse->uio.uio_iovcnt = 1;
671 cse->uio.uio_offset = 0;
672 cse->uio.uio_resid = cop->len;
673 cse->uio.uio_segflg = UIO_SYSSPACE;
674 cse->uio.uio_rw = UIO_WRITE;
675 cse->uio.uio_td = td;
676 cse->uio.uio_iov[0].iov_len = cop->len;
678 cse->uio.uio_iov[0].iov_len += cse->thash->hashsize;
679 cse->uio.uio_resid += cse->thash->hashsize;
681 cse->uio.uio_iov[0].iov_base = malloc(cse->uio.uio_iov[0].iov_len,
684 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL));
691 crda = crp->crp_desc;
693 crde = crda->crd_next;
696 crde = crp->crp_desc;
703 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len)))
708 crda->crd_len = cop->len;
709 crda->crd_inject = cop->len;
711 crda->crd_alg = cse->mac;
712 crda->crd_key = cse->mackey;
713 crda->crd_klen = cse->mackeylen * 8;
717 if (cop->op == COP_ENCRYPT)
718 crde->crd_flags |= CRD_F_ENCRYPT;
720 crde->crd_flags &= ~CRD_F_ENCRYPT;
721 crde->crd_len = cop->len;
722 crde->crd_inject = 0;
724 crde->crd_alg = cse->cipher;
725 crde->crd_key = cse->key;
726 crde->crd_klen = cse->keylen * 8;
729 crp->crp_ilen = cop->len;
730 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
731 | (cop->flags & COP_F_BATCH);
732 crp->crp_buf = (caddr_t)&cse->uio;
733 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb;
734 crp->crp_sid = cse->sid;
735 crp->crp_opaque = (void *)cse;
742 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
746 if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize)))
748 bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize);
749 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
751 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
754 crde->crd_flags |= CRD_F_IV_PRESENT;
755 crde->crd_skip = cse->txform->blocksize;
756 crde->crd_len -= cse->txform->blocksize;
759 if (cop->mac && crda == NULL) {
766 * Let the dispatch run unlocked, then, interlock against the
767 * callback before checking if the operation completed and going
768 * to sleep. This insures drivers don't inherit our lock which
769 * results in a lock order reversal between crypto_dispatch forced
770 * entry and the crypto_done callback into us.
772 error = crypto_dispatch(crp);
773 mtx_lock(&cse->lock);
774 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0)
775 error = msleep(crp, &cse->lock, PWAIT, "crydev", 0);
776 mtx_unlock(&cse->lock);
781 if (crp->crp_etype == EAGAIN) {
783 crp->crp_flags &= ~CRYPTO_F_DONE;
787 if (crp->crp_etype != 0) {
788 error = crp->crp_etype;
798 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len)))
802 (error = copyout((caddr_t)cse->uio.uio_iov[0].iov_base + cop->len,
803 cop->mac, cse->thash->hashsize)))
809 if (cse->uio.uio_iov[0].iov_base)
810 free(cse->uio.uio_iov[0].iov_base, M_XDATA);
816 cryptodev_cb(void *op)
818 struct cryptop *crp = (struct cryptop *) op;
819 struct csession *cse = (struct csession *)crp->crp_opaque;
821 mtx_lock(&cse->lock);
822 cse->error = crp->crp_etype;
824 mtx_unlock(&cse->lock);
829 cryptodevkey_cb(void *op)
831 struct cryptkop *krp = (struct cryptkop *) op;
838 cryptodev_key(struct crypt_kop *kop)
840 struct cryptkop *krp = NULL;
842 int in, out, size, i;
844 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) {
848 in = kop->crk_iparams;
849 out = kop->crk_oparams;
850 switch (kop->crk_op) {
852 if (in == 3 && out == 1)
855 case CRK_MOD_EXP_CRT:
856 if (in == 6 && out == 1)
860 if (in == 5 && out == 2)
864 if (in == 7 && out == 0)
867 case CRK_DH_COMPUTE_KEY:
868 if (in == 3 && out == 1)
875 krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK|M_ZERO);
878 krp->krp_op = kop->crk_op;
879 krp->krp_status = kop->crk_status;
880 krp->krp_iparams = kop->crk_iparams;
881 krp->krp_oparams = kop->crk_oparams;
882 krp->krp_crid = kop->crk_crid;
884 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb;
886 for (i = 0; i < CRK_MAXPARAM; i++) {
887 if (kop->crk_param[i].crp_nbits > 65536)
888 /* Limit is the same as in OpenBSD */
890 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits;
892 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) {
893 size = (krp->krp_param[i].crp_nbits + 7) / 8;
896 krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK);
897 if (i >= krp->krp_iparams)
899 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size);
904 error = crypto_kdispatch(krp);
907 error = tsleep(krp, PSOCK, "crydev", 0);
909 /* XXX can this happen? if so, how do we recover? */
913 kop->crk_crid = krp->krp_crid; /* device that did the work */
914 if (krp->krp_status != 0) {
915 error = krp->krp_status;
919 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) {
920 size = (krp->krp_param[i].crp_nbits + 7) / 8;
923 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size);
930 kop->crk_status = krp->krp_status;
931 for (i = 0; i < CRK_MAXPARAM; i++) {
932 if (krp->krp_param[i].crp_p)
933 free(krp->krp_param[i].crp_p, M_XDATA);
941 cryptodev_find(struct crypt_find_op *find)
945 if (find->crid != -1) {
946 dev = crypto_find_device_byhid(find->crid);
949 strlcpy(find->name, device_get_nameunit(dev),
952 find->crid = crypto_find_driver(find->name);
953 if (find->crid == -1)
964 struct ucred *active_cred,
973 cryptof_kqfilter(struct file *fp, struct knote *kn)
984 struct ucred *active_cred,
993 cryptof_close(struct file *fp, struct thread *td)
995 struct fcrypt *fcr = fp->f_data;
996 struct csession *cse;
998 while ((cse = TAILQ_FIRST(&fcr->csessions))) {
999 TAILQ_REMOVE(&fcr->csessions, cse, next);
1007 static struct csession *
1008 csefind(struct fcrypt *fcr, u_int ses)
1010 struct csession *cse;
1012 TAILQ_FOREACH(cse, &fcr->csessions, next)
1013 if (cse->ses == ses)
1019 csedelete(struct fcrypt *fcr, struct csession *cse_del)
1021 struct csession *cse;
1023 TAILQ_FOREACH(cse, &fcr->csessions, next) {
1024 if (cse == cse_del) {
1025 TAILQ_REMOVE(&fcr->csessions, cse, next);
1032 static struct csession *
1033 cseadd(struct fcrypt *fcr, struct csession *cse)
1035 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next);
1036 cse->ses = fcr->sesn++;
1041 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen,
1042 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac,
1043 struct enc_xform *txform, struct auth_hash *thash)
1045 struct csession *cse;
1048 /* NB: required when mtx_init is built with INVARIANTS */
1049 cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT | M_ZERO);
1051 cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT);
1055 mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF);
1057 cse->keylen = keylen/8;
1058 cse->mackey = mackey;
1059 cse->mackeylen = mackeylen/8;
1061 cse->cipher = cipher;
1063 cse->txform = txform;
1070 csefree(struct csession *cse)
1074 error = crypto_freesession(cse->sid);
1075 mtx_destroy(&cse->lock);
1077 free(cse->key, M_XDATA);
1079 free(cse->mackey, M_XDATA);
1085 cryptoopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
1091 cryptoread(struct cdev *dev, struct uio *uio, int ioflag)
1097 cryptowrite(struct cdev *dev, struct uio *uio, int ioflag)
1103 cryptoioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1111 fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK);
1112 TAILQ_INIT(&fcr->csessions);
1115 error = falloc(td, &f, &fd, 0);
1121 /* falloc automatically provides an extra reference to 'f'. */
1122 finit(f, FREAD | FWRITE, DTYPE_CRYPTO, fcr, &cryptofops);
1123 *(u_int32_t *)data = fd;
1127 error = cryptodev_find((struct crypt_find_op *)data);
1130 error = crypto_getfeat((int *)data);
1139 static struct cdevsw crypto_cdevsw = {
1140 .d_version = D_VERSION,
1141 .d_flags = D_NEEDGIANT,
1142 .d_open = cryptoopen,
1143 .d_read = cryptoread,
1144 .d_write = cryptowrite,
1145 .d_ioctl = cryptoioctl,
1148 static struct cdev *crypto_dev;
1151 * Initialization code, both for static and dynamic loading.
1154 cryptodev_modevent(module_t mod, int type, void *unused)
1159 printf("crypto: <crypto device>\n");
1160 crypto_dev = make_dev(&crypto_cdevsw, 0,
1161 UID_ROOT, GID_WHEEL, 0666,
1165 /*XXX disallow if active sessions */
1166 destroy_dev(crypto_dev);
1172 static moduledata_t cryptodev_mod = {
1177 MODULE_VERSION(cryptodev, 1);
1178 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
1179 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1);
1180 MODULE_DEPEND(cryptodev, zlib, 1, 1, 1);