/* $NetBSD: cryptodev.h,v 1.54 2026/07/05 15:33:44 riastradh Exp $ */ /* $FreeBSD: src/sys/opencrypto/cryptodev.h,v 1.2.2.6 2003/07/02 17:04:50 sam Exp $ */ /* $OpenBSD: cryptodev.h,v 1.33 2002/07/17 23:52:39 art Exp $ */ /*- * Copyright (c) 2008 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Coyote Point Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu) * * This code was written by Angelos D. Keromytis in Athens, Greece, in * February 2000. Network Security Technologies Inc. (NSTI) kindly * supported the development of this code. * * Copyright (c) 2000 Angelos D. Keromytis * * Permission to use, copy, and modify this software with or without fee * is hereby granted, provided that this entire notice is included in * all source code copies of any software which is or includes a copy or * modification of this software. * * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR * PURPOSE. * * Copyright (c) 2001 Theo de Raadt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. * */ #ifndef _CRYPTO_CRYPTO_H_ #define _CRYPTO_CRYPTO_H_ #include <sys/types.h> #include <sys/ioccom.h> #include <sys/time.h> #if defined(_KERNEL_OPT) #include "opt_ocf.h" #endif /* Some initial values */ #define CRYPTO_DRIVERS_INITIAL 4 #define CRYPTO_SW_SESSIONS 32 /* HMAC values */ #define HMAC_BLOCK_LEN 64 /* for compatibility */ #define HMAC_IPAD_VAL 0x36 #define HMAC_OPAD_VAL 0x5C /* Encryption algorithm block sizes */ #define DES_BLOCK_LEN 8 #define DES3_BLOCK_LEN 8 #define BLOWFISH_BLOCK_LEN 8 #define SKIPJACK_BLOCK_LEN 8 #define CAST128_BLOCK_LEN 8 #define RIJNDAEL128_BLOCK_LEN 16 #define EALG_MAX_BLOCK_LEN 16 /* Keep this updated */ /* Maximum hash algorithm result length */ #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */ #define CRYPTO_ALGORITHM_MIN 1 #define CRYPTO_DES_CBC 1 #define CRYPTO_3DES_CBC 2 #define CRYPTO_BLF_CBC 3 #define CRYPTO_CAST_CBC 4 #define CRYPTO_SKIPJACK_CBC 5 #define CRYPTO_MD5_HMAC 6 #define CRYPTO_SHA1_HMAC 7 #define CRYPTO_RIPEMD160_HMAC 8 #define CRYPTO_MD5_KPDK 9 #define CRYPTO_SHA1_KPDK 10 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */ #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */ #define CRYPTO_ARC4 12 #define CRYPTO_MD5 13 #define CRYPTO_SHA1 14 #define CRYPTO_SHA2_256_HMAC 15 #define CRYPTO_SHA2_HMAC CRYPTO_SHA2_256_HMAC /* for compatibility */ #define CRYPTO_NULL_HMAC 16 #define CRYPTO_NULL_CBC 17 #define CRYPTO_DEFLATE_COMP 18 /* Deflate compression algorithm */ #define CRYPTO_MD5_HMAC_96 19 #define CRYPTO_SHA1_HMAC_96 20 #define CRYPTO_RIPEMD160_HMAC_96 21 #define CRYPTO_GZIP_COMP 22 /* gzip compression algorithm */ #define CRYPTO_DEFLATE_COMP_NOGROW 23 /* Deflate, fail if not compressible */ #define CRYPTO_SHA2_384_HMAC 24 #define CRYPTO_SHA2_512_HMAC 25 #define CRYPTO_CAMELLIA_CBC 26 #define CRYPTO_AES_CTR 27 #define CRYPTO_AES_XCBC_MAC_96 28 #define CRYPTO_AES_GCM_16 29 #define CRYPTO_AES_128_GMAC 30 #define CRYPTO_AES_192_GMAC 31 #define CRYPTO_AES_256_GMAC 32 #define CRYPTO_AES_GMAC 33 #define CRYPTO_ALGORITHM_MAX 33 /* Keep updated - see below */ /* Algorithm flags */ #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */ #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */ #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */ struct session_op { uint32_t cipher; /* ie. CRYPTO_DES_CBC */ uint32_t mac; /* ie. CRYPTO_MD5_HMAC */ uint32_t comp_alg; /* ie. CRYPTO_GZIP_COMP */ uint32_t keylen; /* cipher key */ void * key; uint32_t mackeylen; /* mac key */ void * mackey; uint32_t ses; /* returns: session # */ }; /* to support multiple session creation */ struct session_n_op { uint32_t cipher; /* ie. CRYPTO_DES_CBC */ uint32_t mac; /* ie. CRYPTO_MD5_HMAC */ uint32_t comp_alg; /* ie. CRYPTO_GZIP_COMP */ uint32_t keylen; /* cipher key */ void * key; uint32_t mackeylen; /* mac key */ void * mackey; uint32_t ses; /* returns: session # */ int status; }; struct crypt_op { uint32_t ses; uint16_t op; /* i.e. COP_ENCRYPT */ #define COP_ENCRYPT 1 #define COP_DECRYPT 2 #define COP_COMP 3 #define COP_DECOMP 4 uint16_t flags; #define COP_F_BATCH 0x0008 /* Dispatch as quickly as possible */ uint32_t len; /* src len */ void * src, *dst; /* become iov[] inside kernel */ void * mac; /* must be big enough for chosen MAC */ void * iv; uint32_t dst_len; /* dst len if not 0 */ }; /* to support multiple session creation */ /* * * The reqid field is filled when the operation has * been accepted and started, and can be used to later retrieve * the operation results via CIOCNCRYPTRET or identify the * request in the completion list returned by CIOCNCRYPTRETM. * * The opaque pointer can be set arbitrarily by the user * and it is passed back in the crypt_result structure * when the request completes. This field can be used for example * to track context for the request and avoid lookups in the * user application. */ struct crypt_n_op { uint32_t ses; uint16_t op; /* i.e. COP_ENCRYPT */ #define COP_ENCRYPT 1 #define COP_DECRYPT 2 uint16_t flags; #define COP_F_BATCH 0x0008 /* Dispatch as quickly as possible */ #define COP_F_MORE 0x0010 /* more data to follow */ uint32_t len; /* src len */ uint32_t reqid; /* request id */ int status; /* status of request -accepted or not */ void *opaque; /* opaque pointer returned to user */ uint32_t keylen; /* cipher key - optional */ void * key; uint32_t mackeylen; /* also optional */ void * mackey; void * src, *dst; /* become iov[] inside kernel */ void * mac; /* must be big enough for chosen MAC */ void * iv; uint32_t dst_len; /* dst len if not 0 */ }; /* CIOCNCRYPTM ioctl argument, supporting one or more asynchronous * crypt_n_op operations. * Each crypt_n_op will receive a request id which can be used to check its * status via CIOCNCRYPTRET, or to watch for its completion in the list * obtained via CIOCNCRYPTRETM. */ struct crypt_mop { size_t count; /* how many */ struct crypt_n_op * reqs; /* where to get them */ }; struct crypt_sfop { size_t count; uint32_t *sesid; }; struct crypt_sgop { size_t count; struct session_n_op * sessions; }; #define CRYPTO_MAX_MAC_LEN 32 /* Keep this updated */ /* bignum parameter, in packed bytes, ... */ struct crparam { void * crp_p; uint32_t crp_nbits; }; #define CRK_MAXPARAM 8 struct crypt_kop { uint32_t crk_op; /* ie. CRK_MOD_EXP or other */ uint32_t crk_status; /* return status */ uint16_t crk_iparams; /* # of input parameters */ uint16_t crk_oparams; /* # of output parameters */ uint32_t crk_pad1; struct crparam crk_param[CRK_MAXPARAM]; }; /* * Used with the CIOCNFKEYM ioctl. * * This structure allows the OCF to return a request id * for each of the kop operations specified in the CIOCNFKEYM call. * * The crk_opaque pointer can be arbitrarily set by the user * and it is passed back in the crypt_result structure * when the request completes. This field can be used for example * to track context for the request and avoid lookups in the * user application. */ struct crypt_n_kop { uint32_t crk_op; /* ie. CRK_MOD_EXP or other */ uint32_t crk_status; /* return status */ uint16_t crk_iparams; /* # of input parameters */ uint16_t crk_oparams; /* # of output parameters */ uint32_t crk_reqid; /* request id */ struct crparam crk_param[CRK_MAXPARAM]; void *crk_opaque; /* opaque pointer returned to user */ }; struct crypt_mkop { size_t count; /* how many */ struct crypt_n_kop * reqs; /* where to get them */ }; /* Asynchronous key or crypto result. * Note that the status will be set in the crypt_result structure, * not in the original crypt_kop structure (crk_status). */ struct crypt_result { uint32_t reqid; /* request id */ uint32_t status; /* status of request: 0 if successful */ void * opaque; /* Opaque pointer from the user, passed along */ }; struct cryptret { size_t count; /* space for how many */ struct crypt_result * results; /* where to put them */ }; /* Asymmetric key operations */ #define CRK_ALGORITHM_MIN 0 #define CRK_MOD_EXP 0 #define CRK_MOD_EXP_CRT 1 #define CRK_DSA_SIGN 2 #define CRK_DSA_VERIFY 3 #define CRK_DH_COMPUTE_KEY 4 #define CRK_MOD_ADD 5 #define CRK_MOD_ADDINV 6 #define CRK_MOD_SUB 7 #define CRK_MOD_MULT 8 #define CRK_MOD_MULTINV 9 #define CRK_MOD 10 #define CRK_ALGORITHM_MAX 10 /* Keep updated - see below */ #define CRF_MOD_EXP (1 << CRK_MOD_EXP) #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT) #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN) #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY) #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY) #define CRF_MOD_ADD (1 << CRK_MOD_ADD) #define CRF_MOD_ADDINV (1 << CRK_MOD_ADDINV) #define CRF_MOD_SUB (1 << CRK_MOD_SUB) #define CRF_MOD_MULT (1 << CRK_MOD_MULT) #define CRF_MOD_MULTINV (1 << CRK_MOD_MULTINV) #define CRF_MOD (1 << CRK_MOD) /* * A large comment here once held descriptions of the ioctl * requests implemented by the device. This text has been moved * to the crypto(4) manual page and, later, removed from this file * as it was always a step behind the times. */ /* * done against open of /dev/crypto, to get a cloned descriptor. * Please use F_SETFD against the cloned descriptor. But this ioctl * is obsolete (the device now clones): please, just don't use it. */ #define CRIOGET _IOWR('c', 100, uint32_t) /* the following are done against the cloned descriptor */ #define CIOCFSESSION _IOW('c', 102, uint32_t) #define CIOCKEY _IOWR('c', 104, struct crypt_kop) #define CIOCNFKEYM _IOWR('c', 108, struct crypt_mkop) #define CIOCNFSESSION _IOW('c', 109, struct crypt_sfop) #define CIOCNCRYPTRETM _IOWR('c', 110, struct cryptret) #define CIOCNCRYPTRET _IOWR('c', 111, struct crypt_result) #define CIOCGSESSION _IOWR('c', 112, struct session_op) #define CIOCNGSESSION _IOWR('c', 113, struct crypt_sgop) #define CIOCCRYPT _IOWR('c', 114, struct crypt_op) #define CIOCNCRYPTM _IOWR('c', 115, struct crypt_mop) #define CIOCASYMFEAT _IOR('c', 105, uint32_t) struct cryptotstat { struct timespec acc; /* total accumulated time */ struct timespec min; /* max time */ struct timespec max; /* max time */ uint32_t count; /* number of observations */ }; struct cryptostats { uint32_t cs_ops; /* symmetric crypto ops submitted */ uint32_t cs_errs; /* symmetric crypto ops that failed */ uint32_t cs_kops; /* asymmetric/key ops submitted */ uint32_t cs_kerrs; /* asymmetric/key ops that failed */ uint32_t cs_intrs; /* crypto swi thread activations */ uint32_t cs_rets; /* crypto return thread activations */ uint32_t cs_blocks; /* symmetric op driver block */ uint32_t cs_kblocks; /* symmetric op driver block */ /* * When CRYPTO_TIMING is defined at compile time and the * sysctl debug.crypto is set to 1, the crypto system will * accumulate statistics about how long it takes to process * crypto requests at various points during processing. */ struct cryptotstat cs_invoke; /* crypto_dispatch -> crypto_invoke */ struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */ struct cryptotstat cs_cb; /* crypto_done -> callback */ struct cryptotstat cs_finis; /* callback -> callback return */ }; #ifdef _KERNEL #include <sys/condvar.h> #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/queue.h> #include <sys/systm.h> struct cpu_info; struct uio; /* Standard initialization structure beginning */ struct cryptoini { int cri_alg; /* Algorithm to use */ uint32_t cri_klen; /* Key length, in bits */ uint32_t cri_rnd; /* Algorithm rounds, where relevant */ char *cri_key; /* key to use */ uint8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */ struct cryptoini *cri_next; }; /* Describe boundaries of a single crypto operation */ struct cryptodesc { uint32_t crd_skip; /* How many bytes to ignore from start */ uint32_t crd_len; /* How many bytes to process */ uint32_t crd_inject; /* Where to inject results, if applicable */ int crd_flags; #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */ #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in place, so don't copy. */ #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */ #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */ #define CRD_F_COMP 0x10 /* Set when doing compression */ struct cryptoini CRD_INI; /* Initialization/context data */ #define crd_iv CRD_INI.cri_iv #define crd_key CRD_INI.cri_key #define crd_rnd CRD_INI.cri_rnd #define crd_alg CRD_INI.cri_alg #define crd_klen CRD_INI.cri_klen struct cryptodesc *crd_next; }; struct cryptop_data { struct csession *cse; struct iovec iovec[1]; /* user requests never have more */ struct uio uio; size_t iov_len; }; /* Structure describing complete operation */ struct cryptop { TAILQ_ENTRY(cryptop) crp_next; uint64_t crp_sid; /* Session ID */ uint32_t crp_ilen; /* Input data total length */ uint32_t crp_olen; /* Result total length */ int crp_etype; /* * Error type (zero means no error). * All error codes * indicate possible data corruption (as in, * the data have been touched). On all * errors, the crp_sid may have changed * (reset to a new one), so the caller * should always check and use the new * value on future requests. */ int crp_flags; /* * other than crypto.c must not write * after crypto_dispatch(). */ #define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains */ #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */ #define CRYPTO_F_REL 0x0004 /* Must return data in same place */ #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible possible */ #define CRYPTO_F_UNUSED0 0x0010 /* was CRYPTO_F_CBIMM */ #define CRYPTO_F_UNUSED1 0x0020 /* was CRYPTO_F_DONE */ #define CRYPTO_F_UNUSED2 0x0040 /* was CRYPTO_F_CBIFSYNC */ #define CRYPTO_F_ONRETQ 0x0080 /* Request is on return queue */ #define CRYPTO_F_UNUSED3 0x0100 /* was CRYPTO_F_USER */ #define CRYPTO_F_MORE 0x0200 /* more data to follow */ int crp_devflags; /* other than cryptodev.c must not use. */ #define CRYPTODEV_F_RET 0x0001 /* return from crypto.c to cryptodev.c */ void * crp_buf; /* Data to be processed */ void * crp_opaque; /* Opaque pointer, passed along */ struct cryptodesc *crp_desc; /* Linked list of processing descriptors */ void (*crp_callback)(struct cryptop *); /* * Callback function. * That must not sleep as it is * called in softint context. */ void * crp_mac; /* * everything below is private to crypto(4) */ uint32_t crp_reqid; /* request id */ void * crp_usropaque; /* Opaque pointer from user, passed along */ struct timespec crp_tstamp; /* performance time stamp */ kcondvar_t crp_cv; struct fcrypt *fcrp; void * dst; void * mac; uint32_t len; u_char tmp_iv[EALG_MAX_BLOCK_LEN]; u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; struct cryptop_data cod; uint32_t magic; struct cpu_info *reqcpu; /* * save requested CPU to do cryptoret * softint in the same CPU. */ }; #define CRYPTO_BUF_CONTIG 0x0 #define CRYPTO_BUF_IOV 0x1 #define CRYPTO_BUF_MBUF 0x2 #define CRYPTO_OP_DECRYPT 0x0 #define CRYPTO_OP_ENCRYPT 0x1 /* * Hints passed to process methods. */ #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */ struct cryptkop { TAILQ_ENTRY(cryptkop) krp_next; uint32_t krp_reqid; /* request id */ void * krp_usropaque; /* Opaque pointer from user, passed along */ uint32_t krp_op; /* ie. CRK_MOD_EXP or other */ uint32_t krp_status; /* return status */ uint16_t krp_iparams; /* # of input parameters */ uint16_t krp_oparams; /* # of output parameters */ uint32_t krp_hid; kmutex_t krp_lock; struct crparam krp_param[CRK_MAXPARAM]; /* kvm */ void (*krp_callback)(struct cryptkop *); /* * Callback function. * That must not sleep as it is * called in softint context. */ int krp_flags; /* same values as crp_flags */ int krp_devflags; /* same values as crp_devflags */ kcondvar_t krp_cv; struct fcrypt *fcrp; struct crparam crk_param[CRK_MAXPARAM]; struct cpu_info *reqcpu; }; /* Crypto capabilities structure */ struct cryptocap { uint32_t cc_sessions; /* * Largest possible operator length (in bits) for each type of * encryption algorithm. */ uint16_t cc_max_op_len[CRYPTO_ALGORITHM_MAX + 1]; uint8_t cc_alg[CRYPTO_ALGORITHM_MAX + 1]; uint8_t cc_kalg[CRK_ALGORITHM_MAX + 1]; uint8_t cc_flags; uint8_t cc_qblocked; /* symmetric q blocked */ uint8_t cc_kqblocked; /* asymmetric q blocked */ #define CRYPTOCAP_F_CLEANUP 0x01 /* needs resource cleanup */ #define CRYPTOCAP_F_SOFTWARE 0x02 /* software implementation */ #define CRYPTOCAP_F_SYNC 0x04 /* operates synchronously */ void *cc_arg; /* callback argument */ int (*cc_newsession)(void*, uint32_t*, struct cryptoini*); int (*cc_process) (void*, struct cryptop *, int); void (*cc_freesession) (void *, uint64_t); void *cc_karg; /* callback argument */ int (*cc_kprocess) (void*, struct cryptkop *, int); kmutex_t cc_lock; }; /* * Session ids are 64 bits. The lower 32 bits contain a "local id" which * is a driver-private session identifier. The upper 32 bits contain a * "hardware id" used by the core crypto code to identify the driver and * a copy of the driver's capabilities that can be used by client code to * optimize operation. */ #define CRYPTO_SESID2HID(_sid) ((((_sid) >> 32) & 0xffffff) - 1) #define CRYPTO_SESID2CAPS(_sid) (((_sid) >> 56) & 0xff) #define CRYPTO_SESID2LID(_sid) (((uint32_t) (_sid)) & 0xffffffff) MALLOC_DECLARE(M_CRYPTO_DATA); extern int crypto_newsession(uint64_t *sid, struct cryptoini *cri, int hard); extern void crypto_freesession(uint64_t sid); extern int32_t crypto_get_driverid(uint32_t flags); extern int crypto_register(uint32_t driverid, int alg, uint16_t maxoplen, uint32_t flags, int (*newses)(void*, uint32_t*, struct cryptoini*), void (*freeses)(void *, uint64_t), int (*process)(void*, struct cryptop *, int), void *arg); extern int crypto_kregister(uint32_t, int, uint32_t, int (*)(void*, struct cryptkop *, int), void *arg); extern int crypto_unregister(uint32_t driverid, int alg); extern int crypto_unregister_all(uint32_t driverid); extern void crypto_dispatch(struct cryptop *crp); extern void crypto_kdispatch(struct cryptkop *); #define CRYPTO_SYMQ 0x1 #define CRYPTO_ASYMQ 0x2 extern int crypto_unblock(uint32_t, int); extern void crypto_done(struct cryptop *crp); extern void crypto_kdone(struct cryptkop *); extern int crypto_getfeat(int *); void cuio_copydata(struct uio *, int, int, void *); void cuio_copyback(struct uio *, int, int, void *); int cuio_apply(struct uio *, int, int, int (*f)(void *, void *, unsigned int), void *); extern void crypto_freereq(struct cryptop *crp); extern struct cryptop *crypto_getreq(int num); extern void crypto_kfreereq(struct cryptkop *); extern struct cryptkop *crypto_kgetreq(int, int); extern int crypto_usercrypto; /* userland may do crypto requests */ extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ extern int crypto_devallowsoft; /* only use hardware crypto */ /* * initialize the crypto framework subsystem (not the pseudo-device). * This must be called very early in boot, so the framework is ready * to handle registration requests when crypto hardware is autoconfigured. * (This declaration doesn't really belong here but there's no header * for the raw framework.) */ int crypto_init(void); /* * Crypto-related utility routines used mainly by drivers. * * XXX these don't really belong here; but for now they're * kept apart from the rest of the system. */ struct uio; extern void cuio_copydata(struct uio* uio, int off, int len, void *cp); extern void cuio_copyback(struct uio* uio, int off, int len, void *cp); extern int cuio_getptr(struct uio *, int loc, int *off); #ifdef CRYPTO_DEBUG /* yuck, netipsec defines these differently */ #ifndef DPRINTF #define DPRINTF(a, ...) printf("%s: " a, __func__, ##__VA_ARGS__) #endif #else #ifndef DPRINTF #define DPRINTF(a, ...) #endif #endif #endif /* _KERNEL */ /* * Locking notes: * + crypto_drivers itself is protected by crypto_drv_mtx (an adaptive lock) * + crypto_drivers[i] and its all members are protected by * crypto_drivers[i].cc_lock (a spin lock) * spin lock as crypto_unblock() can be called in interrupt context * + percpu'ed crp_q and crp_kq are procted by splsoftnet. * + crp_ret_q, crp_ret_kq and crypto_exit_flag that are members of * struct crypto_crp_ret_qs are protected by crypto_crp_ret_qs.crp_ret_q_mtx * (a spin lock) * spin lock as crypto_done() can be called in interrupt context * NOTE: * It is not known whether crypto_done()(in interrupt context) is called * in the same CPU as crypto_dispatch() is called. * So, struct crypto_crp_ret_qs cannot be percpu(9). * * Locking order: * - crypto_drv_mtx => crypto_drivers[i].cc_lock */ #endif /* _CRYPTO_CRYPTO_H_ */
