diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/cryptosoft.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/cryptosoft.c | 1322 |
1 files changed, 0 insertions, 1322 deletions
diff --git a/target/linux/generic/files/crypto/ocf/cryptosoft.c b/target/linux/generic/files/crypto/ocf/cryptosoft.c deleted file mode 100644 index aa2383d1f0..0000000000 --- a/target/linux/generic/files/crypto/ocf/cryptosoft.c +++ /dev/null @@ -1,1322 +0,0 @@ -/* - * An OCF module that uses the linux kernel cryptoapi, based on the - * original cryptosoft for BSD by Angelos D. Keromytis (angelos@cis.upenn.edu) - * but is mostly unrecognisable, - * - * Written by David McCullough <david_mccullough@mcafee.com> - * Copyright (C) 2004-2011 David McCullough - * Copyright (C) 2004-2005 Intel Corporation. - * - * LICENSE TERMS - * - * The free distribution and use of this software in both source and binary - * form is allowed (with or without changes) provided that: - * - * 1. distributions of this source code include the above copyright - * notice, this list of conditions and the following disclaimer; - * - * 2. distributions in binary form include the above copyright - * notice, this list of conditions and the following disclaimer - * in the documentation and/or other associated materials; - * - * 3. the copyright holder's name is not used to endorse products - * built using this software without specific written permission. - * - * ALTERNATIVELY, provided that this notice is retained in full, this product - * may be distributed under the terms of the GNU General Public License (GPL), - * in which case the provisions of the GPL apply INSTEAD OF those given above. - * - * DISCLAIMER - * - * This software is provided 'as is' with no explicit or implied warranties - * in respect of its properties, including, but not limited to, correctness - * and/or fitness for purpose. - * --------------------------------------------------------------------------- - */ - -#include <linux/version.h> -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED) -#include <linux/config.h> -#endif -#include <linux/module.h> -#include <linux/init.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/sched.h> -#include <linux/wait.h> -#include <linux/crypto.h> -#include <linux/mm.h> -#include <linux/skbuff.h> -#include <linux/random.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10) -#include <linux/scatterlist.h> -#endif -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29) -#include <crypto/hash.h> -#endif - -#include <cryptodev.h> -#include <uio.h> - -struct { - softc_device_decl sc_dev; -} swcr_softc; - -#define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) - -#define SW_TYPE_CIPHER 0x01 -#define SW_TYPE_HMAC 0x02 -#define SW_TYPE_HASH 0x04 -#define SW_TYPE_COMP 0x08 -#define SW_TYPE_BLKCIPHER 0x10 -#define SW_TYPE_ALG_MASK 0x1f - -#define SW_TYPE_ASYNC 0x8000 - -#define SW_TYPE_INUSE 0x10000000 - -/* We change some of the above if we have an async interface */ - -#define SW_TYPE_ALG_AMASK (SW_TYPE_ALG_MASK | SW_TYPE_ASYNC) - -#define SW_TYPE_ABLKCIPHER (SW_TYPE_BLKCIPHER | SW_TYPE_ASYNC) -#define SW_TYPE_AHASH (SW_TYPE_HASH | SW_TYPE_ASYNC) -#define SW_TYPE_AHMAC (SW_TYPE_HMAC | SW_TYPE_ASYNC) - -#define SCATTERLIST_MAX 16 - -struct swcr_data { - struct work_struct workq; - int sw_type; - int sw_alg; - struct crypto_tfm *sw_tfm; - spinlock_t sw_tfm_lock; - union { - struct { - char *sw_key; - int sw_klen; - int sw_mlen; - } hmac; - void *sw_comp_buf; - } u; - struct swcr_data *sw_next; -}; - -struct swcr_req { - struct swcr_data *sw_head; - struct swcr_data *sw; - struct cryptop *crp; - struct cryptodesc *crd; - struct scatterlist sg[SCATTERLIST_MAX]; - unsigned char iv[EALG_MAX_BLOCK_LEN]; - char result[HASH_MAX_LEN]; - void *crypto_req; -}; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) -static kmem_cache_t *swcr_req_cache; -#else -static struct kmem_cache *swcr_req_cache; -#endif - -#ifndef CRYPTO_TFM_MODE_CBC -/* - * As of linux-2.6.21 this is no longer defined, and presumably no longer - * needed to be passed into the crypto core code. - */ -#define CRYPTO_TFM_MODE_CBC 0 -#define CRYPTO_TFM_MODE_ECB 0 -#endif - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) - /* - * Linux 2.6.19 introduced a new Crypto API, setup macro's to convert new - * API into old API. - */ - - /* Symmetric/Block Cipher */ - struct blkcipher_desc - { - struct crypto_tfm *tfm; - void *info; - }; - #define ecb(X) #X , CRYPTO_TFM_MODE_ECB - #define cbc(X) #X , CRYPTO_TFM_MODE_CBC - #define crypto_has_blkcipher(X, Y, Z) crypto_alg_available(X, 0) - #define crypto_blkcipher_cast(X) X - #define crypto_blkcipher_tfm(X) X - #define crypto_alloc_blkcipher(X, Y, Z) crypto_alloc_tfm(X, mode) - #define crypto_blkcipher_ivsize(X) crypto_tfm_alg_ivsize(X) - #define crypto_blkcipher_blocksize(X) crypto_tfm_alg_blocksize(X) - #define crypto_blkcipher_setkey(X, Y, Z) crypto_cipher_setkey(X, Y, Z) - #define crypto_blkcipher_encrypt_iv(W, X, Y, Z) \ - crypto_cipher_encrypt_iv((W)->tfm, X, Y, Z, (u8 *)((W)->info)) - #define crypto_blkcipher_decrypt_iv(W, X, Y, Z) \ - crypto_cipher_decrypt_iv((W)->tfm, X, Y, Z, (u8 *)((W)->info)) - #define crypto_blkcipher_set_flags(x, y) /* nop */ - #define crypto_free_blkcipher(x) crypto_free_tfm(x) - #define crypto_free_comp crypto_free_tfm - #define crypto_free_hash crypto_free_tfm - - /* Hash/HMAC/Digest */ - struct hash_desc - { - struct crypto_tfm *tfm; - }; - #define hmac(X) #X , 0 - #define crypto_has_hash(X, Y, Z) crypto_alg_available(X, 0) - #define crypto_hash_cast(X) X - #define crypto_hash_tfm(X) X - #define crypto_alloc_hash(X, Y, Z) crypto_alloc_tfm(X, mode) - #define crypto_hash_digestsize(X) crypto_tfm_alg_digestsize(X) - #define crypto_hash_digest(W, X, Y, Z) \ - crypto_digest_digest((W)->tfm, X, sg_num, Z) - - /* Asymmetric Cipher */ - #define crypto_has_cipher(X, Y, Z) crypto_alg_available(X, 0) - - /* Compression */ - #define crypto_has_comp(X, Y, Z) crypto_alg_available(X, 0) - #define crypto_comp_tfm(X) X - #define crypto_comp_cast(X) X - #define crypto_alloc_comp(X, Y, Z) crypto_alloc_tfm(X, mode) - #define plain(X) #X , 0 -#else - #define ecb(X) "ecb(" #X ")" , 0 - #define cbc(X) "cbc(" #X ")" , 0 - #define hmac(X) "hmac(" #X ")" , 0 - #define plain(X) #X , 0 -#endif /* if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22) -/* no ablkcipher in older kernels */ -#define crypto_alloc_ablkcipher(a,b,c) (NULL) -#define crypto_ablkcipher_tfm(x) ((struct crypto_tfm *)(x)) -#define crypto_ablkcipher_set_flags(a, b) /* nop */ -#define crypto_ablkcipher_setkey(x, y, z) (-EINVAL) -#define crypto_has_ablkcipher(a,b,c) (0) -#else -#define HAVE_ABLKCIPHER -#endif - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32) -/* no ahash in older kernels */ -#define crypto_ahash_tfm(x) ((struct crypto_tfm *)(x)) -#define crypto_alloc_ahash(a,b,c) (NULL) -#define crypto_ahash_digestsize(x) 0 -#else -#define HAVE_AHASH -#endif - -struct crypto_details { - char *alg_name; - int mode; - int sw_type; -}; - -static struct crypto_details crypto_details[] = { - [CRYPTO_DES_CBC] = { cbc(des), SW_TYPE_BLKCIPHER, }, - [CRYPTO_3DES_CBC] = { cbc(des3_ede), SW_TYPE_BLKCIPHER, }, - [CRYPTO_BLF_CBC] = { cbc(blowfish), SW_TYPE_BLKCIPHER, }, - [CRYPTO_CAST_CBC] = { cbc(cast5), SW_TYPE_BLKCIPHER, }, - [CRYPTO_SKIPJACK_CBC] = { cbc(skipjack), SW_TYPE_BLKCIPHER, }, - [CRYPTO_MD5_HMAC] = { hmac(md5), SW_TYPE_HMAC, }, - [CRYPTO_SHA1_HMAC] = { hmac(sha1), SW_TYPE_HMAC, }, - [CRYPTO_RIPEMD160_HMAC] = { hmac(ripemd160), SW_TYPE_HMAC, }, - [CRYPTO_MD5_KPDK] = { plain(md5-kpdk), SW_TYPE_HASH, }, - [CRYPTO_SHA1_KPDK] = { plain(sha1-kpdk), SW_TYPE_HASH, }, - [CRYPTO_AES_CBC] = { cbc(aes), SW_TYPE_BLKCIPHER, }, - [CRYPTO_ARC4] = { ecb(arc4), SW_TYPE_BLKCIPHER, }, - [CRYPTO_MD5] = { plain(md5), SW_TYPE_HASH, }, - [CRYPTO_SHA1] = { plain(sha1), SW_TYPE_HASH, }, - [CRYPTO_NULL_HMAC] = { hmac(digest_null), SW_TYPE_HMAC, }, - [CRYPTO_NULL_CBC] = { cbc(cipher_null), SW_TYPE_BLKCIPHER, }, - [CRYPTO_DEFLATE_COMP] = { plain(deflate), SW_TYPE_COMP, }, - [CRYPTO_SHA2_256_HMAC] = { hmac(sha256), SW_TYPE_HMAC, }, - [CRYPTO_SHA2_384_HMAC] = { hmac(sha384), SW_TYPE_HMAC, }, - [CRYPTO_SHA2_512_HMAC] = { hmac(sha512), SW_TYPE_HMAC, }, - [CRYPTO_CAMELLIA_CBC] = { cbc(camellia), SW_TYPE_BLKCIPHER, }, - [CRYPTO_SHA2_256] = { plain(sha256), SW_TYPE_HASH, }, - [CRYPTO_SHA2_384] = { plain(sha384), SW_TYPE_HASH, }, - [CRYPTO_SHA2_512] = { plain(sha512), SW_TYPE_HASH, }, - [CRYPTO_RIPEMD160] = { plain(ripemd160), SW_TYPE_HASH, }, -}; - -int32_t swcr_id = -1; -module_param(swcr_id, int, 0444); -MODULE_PARM_DESC(swcr_id, "Read-Only OCF ID for cryptosoft driver"); - -int swcr_fail_if_compression_grows = 1; -module_param(swcr_fail_if_compression_grows, int, 0644); -MODULE_PARM_DESC(swcr_fail_if_compression_grows, - "Treat compression that results in more data as a failure"); - -int swcr_no_ahash = 0; -module_param(swcr_no_ahash, int, 0644); -MODULE_PARM_DESC(swcr_no_ahash, - "Do not use async hash/hmac even if available"); - -int swcr_no_ablk = 0; -module_param(swcr_no_ablk, int, 0644); -MODULE_PARM_DESC(swcr_no_ablk, - "Do not use async blk ciphers even if available"); - -static struct swcr_data **swcr_sessions = NULL; -static u_int32_t swcr_sesnum = 0; - -static int swcr_process(device_t, struct cryptop *, int); -static int swcr_newsession(device_t, u_int32_t *, struct cryptoini *); -static int swcr_freesession(device_t, u_int64_t); - -static device_method_t swcr_methods = { - /* crypto device methods */ - DEVMETHOD(cryptodev_newsession, swcr_newsession), - DEVMETHOD(cryptodev_freesession,swcr_freesession), - DEVMETHOD(cryptodev_process, swcr_process), -}; - -#define debug swcr_debug -int swcr_debug = 0; -module_param(swcr_debug, int, 0644); -MODULE_PARM_DESC(swcr_debug, "Enable debug"); - -static void swcr_process_req(struct swcr_req *req); - -/* - * somethings just need to be run with user context no matter whether - * the kernel compression libs use vmalloc/vfree for example. - */ - -typedef struct { - struct work_struct wq; - void (*func)(void *arg); - void *arg; -} execute_later_t; - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20) -static void -doing_it_now(struct work_struct *wq) -{ - execute_later_t *w = container_of(wq, execute_later_t, wq); - (w->func)(w->arg); - kfree(w); -} -#else -static void -doing_it_now(void *arg) -{ - execute_later_t *w = (execute_later_t *) arg; - (w->func)(w->arg); - kfree(w); -} -#endif - -static void -execute_later(void (fn)(void *), void *arg) -{ - execute_later_t *w; - - w = (execute_later_t *) kmalloc(sizeof(execute_later_t), SLAB_ATOMIC); - if (w) { - memset(w, '\0', sizeof(w)); - w->func = fn; - w->arg = arg; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20) - INIT_WORK(&w->wq, doing_it_now); -#else - INIT_WORK(&w->wq, doing_it_now, w); -#endif - schedule_work(&w->wq); - } -} - -/* - * Generate a new software session. - */ -static int -swcr_newsession(device_t dev, u_int32_t *sid, struct cryptoini *cri) -{ - struct swcr_data **swd; - u_int32_t i; - int error; - char *algo; - int mode; - - dprintk("%s()\n", __FUNCTION__); - if (sid == NULL || cri == NULL) { - dprintk("%s,%d - EINVAL\n", __FILE__, __LINE__); - return EINVAL; - } - - if (swcr_sessions) { - for (i = 1; i < swcr_sesnum; i++) - if (swcr_sessions[i] == NULL) - break; - } else - i = 1; /* NB: to silence compiler warning */ - - if (swcr_sessions == NULL || i == swcr_sesnum) { - if (swcr_sessions == NULL) { - i = 1; /* We leave swcr_sessions[0] empty */ - swcr_sesnum = CRYPTO_SW_SESSIONS; - } else - swcr_sesnum *= 2; - - swd = kmalloc(swcr_sesnum * sizeof(struct swcr_data *), SLAB_ATOMIC); - if (swd == NULL) { - /* Reset session number */ - if (swcr_sesnum == CRYPTO_SW_SESSIONS) - swcr_sesnum = 0; - else - swcr_sesnum /= 2; - dprintk("%s,%d: ENOBUFS\n", __FILE__, __LINE__); - return ENOBUFS; - } - memset(swd, 0, swcr_sesnum * sizeof(struct swcr_data *)); - - /* Copy existing sessions */ - if (swcr_sessions) { - memcpy(swd, swcr_sessions, - (swcr_sesnum / 2) * sizeof(struct swcr_data *)); - kfree(swcr_sessions); - } - - swcr_sessions = swd; - } - - swd = &swcr_sessions[i]; - *sid = i; - - while (cri) { - *swd = (struct swcr_data *) kmalloc(sizeof(struct swcr_data), - SLAB_ATOMIC); - if (*swd == NULL) { - swcr_freesession(NULL, i); - dprintk("%s,%d: ENOBUFS\n", __FILE__, __LINE__); - return ENOBUFS; - } - memset(*swd, 0, sizeof(struct swcr_data)); - - if (cri->cri_alg < 0 || - cri->cri_alg>=sizeof(crypto_details)/sizeof(crypto_details[0])){ - printk("cryptosoft: Unknown algorithm 0x%x\n", cri->cri_alg); - swcr_freesession(NULL, i); - return EINVAL; - } - - algo = crypto_details[cri->cri_alg].alg_name; - if (!algo || !*algo) { - printk("cryptosoft: Unsupported algorithm 0x%x\n", cri->cri_alg); - swcr_freesession(NULL, i); - return EINVAL; - } - - mode = crypto_details[cri->cri_alg].mode; - (*swd)->sw_type = crypto_details[cri->cri_alg].sw_type; - (*swd)->sw_alg = cri->cri_alg; - - spin_lock_init(&(*swd)->sw_tfm_lock); - - /* Algorithm specific configuration */ - switch (cri->cri_alg) { - case CRYPTO_NULL_CBC: - cri->cri_klen = 0; /* make it work with crypto API */ - break; - default: - break; - } - - if ((*swd)->sw_type & SW_TYPE_BLKCIPHER) { - dprintk("%s crypto_alloc_*blkcipher(%s, 0x%x)\n", __FUNCTION__, - algo, mode); - - /* try async first */ - (*swd)->sw_tfm = swcr_no_ablk ? NULL : - crypto_ablkcipher_tfm(crypto_alloc_ablkcipher(algo, 0, 0)); - if ((*swd)->sw_tfm && !IS_ERR((*swd)->sw_tfm)) { - dprintk("%s %s cipher is async\n", __FUNCTION__, algo); - (*swd)->sw_type |= SW_TYPE_ASYNC; - } else { - (*swd)->sw_tfm = crypto_blkcipher_tfm( - crypto_alloc_blkcipher(algo, 0, CRYPTO_ALG_ASYNC)); - if ((*swd)->sw_tfm && !IS_ERR((*swd)->sw_tfm)) - dprintk("%s %s cipher is sync\n", __FUNCTION__, algo); - } - if (!(*swd)->sw_tfm || IS_ERR((*swd)->sw_tfm)) { - int err; - dprintk("cryptosoft: crypto_alloc_blkcipher failed(%s, 0x%x)\n", - algo,mode); - err = IS_ERR((*swd)->sw_tfm) ? -(PTR_ERR((*swd)->sw_tfm)) : EINVAL; - (*swd)->sw_tfm = NULL; /* ensure NULL */ - swcr_freesession(NULL, i); - return err; - } - - if (debug) { - dprintk("%s key:cri->cri_klen=%d,(cri->cri_klen + 7)/8=%d", - __FUNCTION__, cri->cri_klen, (cri->cri_klen + 7) / 8); - for (i = 0; i < (cri->cri_klen + 7) / 8; i++) - dprintk("%s0x%x", (i % 8) ? " " : "\n ", - cri->cri_key[i] & 0xff); - dprintk("\n"); - } - if ((*swd)->sw_type & SW_TYPE_ASYNC) { - /* OCF doesn't enforce keys */ - crypto_ablkcipher_set_flags( - __crypto_ablkcipher_cast((*swd)->sw_tfm), - CRYPTO_TFM_REQ_WEAK_KEY); - error = crypto_ablkcipher_setkey( - __crypto_ablkcipher_cast((*swd)->sw_tfm), - cri->cri_key, (cri->cri_klen + 7) / 8); - } else { - /* OCF doesn't enforce keys */ - crypto_blkcipher_set_flags( - crypto_blkcipher_cast((*swd)->sw_tfm), - CRYPTO_TFM_REQ_WEAK_KEY); - error = crypto_blkcipher_setkey( - crypto_blkcipher_cast((*swd)->sw_tfm), - cri->cri_key, (cri->cri_klen + 7) / 8); - } - if (error) { - printk("cryptosoft: setkey failed %d (crt_flags=0x%x)\n", error, - (*swd)->sw_tfm->crt_flags); - swcr_freesession(NULL, i); - return error; - } - } else if ((*swd)->sw_type & (SW_TYPE_HMAC | SW_TYPE_HASH)) { - dprintk("%s crypto_alloc_*hash(%s, 0x%x)\n", __FUNCTION__, - algo, mode); - - /* try async first */ - (*swd)->sw_tfm = swcr_no_ahash ? NULL : - crypto_ahash_tfm(crypto_alloc_ahash(algo, 0, 0)); - if ((*swd)->sw_tfm) { - dprintk("%s %s hash is async\n", __FUNCTION__, algo); - (*swd)->sw_type |= SW_TYPE_ASYNC; - } else { - dprintk("%s %s hash is sync\n", __FUNCTION__, algo); - (*swd)->sw_tfm = crypto_hash_tfm( - crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC)); - } - - if (!(*swd)->sw_tfm) { - dprintk("cryptosoft: crypto_alloc_hash failed(%s,0x%x)\n", - algo, mode); - swcr_freesession(NULL, i); - return EINVAL; - } - - (*swd)->u.hmac.sw_klen = (cri->cri_klen + 7) / 8; - (*swd)->u.hmac.sw_key = (char *)kmalloc((*swd)->u.hmac.sw_klen, - SLAB_ATOMIC); - if ((*swd)->u.hmac.sw_key == NULL) { - swcr_freesession(NULL, i); - dprintk("%s,%d: ENOBUFS\n", __FILE__, __LINE__); - return ENOBUFS; - } - memcpy((*swd)->u.hmac.sw_key, cri->cri_key, (*swd)->u.hmac.sw_klen); - if (cri->cri_mlen) { - (*swd)->u.hmac.sw_mlen = cri->cri_mlen; - } else if ((*swd)->sw_type & SW_TYPE_ASYNC) { - (*swd)->u.hmac.sw_mlen = crypto_ahash_digestsize( - __crypto_ahash_cast((*swd)->sw_tfm)); - } else { - (*swd)->u.hmac.sw_mlen = crypto_hash_digestsize( - crypto_hash_cast((*swd)->sw_tfm)); - } - } else if ((*swd)->sw_type & SW_TYPE_COMP) { - (*swd)->sw_tfm = crypto_comp_tfm( - crypto_alloc_comp(algo, 0, CRYPTO_ALG_ASYNC)); - if (!(*swd)->sw_tfm) { - dprintk("cryptosoft: crypto_alloc_comp failed(%s,0x%x)\n", - algo, mode); - swcr_freesession(NULL, i); - return EINVAL; - } - (*swd)->u.sw_comp_buf = kmalloc(CRYPTO_MAX_DATA_LEN, SLAB_ATOMIC); - if ((*swd)->u.sw_comp_buf == NULL) { - swcr_freesession(NULL, i); - dprintk("%s,%d: ENOBUFS\n", __FILE__, __LINE__); - return ENOBUFS; - } - } else { - printk("cryptosoft: Unhandled sw_type %d\n", (*swd)->sw_type); - swcr_freesession(NULL, i); - return EINVAL; - } - - cri = cri->cri_next; - swd = &((*swd)->sw_next); - } - return 0; -} - -/* - * Free a session. - */ -static int -swcr_freesession(device_t dev, u_int64_t tid) -{ - struct swcr_data *swd; - u_int32_t sid = CRYPTO_SESID2LID(tid); - - dprintk("%s()\n", __FUNCTION__); - if (sid > swcr_sesnum || swcr_sessions == NULL || - swcr_sessions[sid] == NULL) { - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - return(EINVAL); - } - - /* Silently accept and return */ - if (sid == 0) - return(0); - - while ((swd = swcr_sessions[sid]) != NULL) { - swcr_sessions[sid] = swd->sw_next; - if (swd->sw_tfm) { - switch (swd->sw_type & SW_TYPE_ALG_AMASK) { -#ifdef HAVE_AHASH - case SW_TYPE_AHMAC: - case SW_TYPE_AHASH: - crypto_free_ahash(__crypto_ahash_cast(swd->sw_tfm)); - break; -#endif -#ifdef HAVE_ABLKCIPHER - case SW_TYPE_ABLKCIPHER: - crypto_free_ablkcipher(__crypto_ablkcipher_cast(swd->sw_tfm)); - break; -#endif - case SW_TYPE_BLKCIPHER: - crypto_free_blkcipher(crypto_blkcipher_cast(swd->sw_tfm)); - break; - case SW_TYPE_HMAC: - case SW_TYPE_HASH: - crypto_free_hash(crypto_hash_cast(swd->sw_tfm)); - break; - case SW_TYPE_COMP: - if (in_interrupt()) - execute_later((void (*)(void *))crypto_free_comp, (void *)crypto_comp_cast(swd->sw_tfm)); - else - crypto_free_comp(crypto_comp_cast(swd->sw_tfm)); - break; - default: - crypto_free_tfm(swd->sw_tfm); - break; - } - swd->sw_tfm = NULL; - } - if (swd->sw_type & SW_TYPE_COMP) { - if (swd->u.sw_comp_buf) - kfree(swd->u.sw_comp_buf); - } else { - if (swd->u.hmac.sw_key) - kfree(swd->u.hmac.sw_key); - } - kfree(swd); - } - return 0; -} - -static void swcr_process_req_complete(struct swcr_req *req) -{ - dprintk("%s()\n", __FUNCTION__); - - if (req->sw->sw_type & SW_TYPE_INUSE) { - unsigned long flags; - spin_lock_irqsave(&req->sw->sw_tfm_lock, flags); - req->sw->sw_type &= ~SW_TYPE_INUSE; - spin_unlock_irqrestore(&req->sw->sw_tfm_lock, flags); - } - - if (req->crp->crp_etype) - goto done; - - switch (req->sw->sw_type & SW_TYPE_ALG_AMASK) { -#if defined(HAVE_AHASH) - case SW_TYPE_AHMAC: - case SW_TYPE_AHASH: - crypto_copyback(req->crp->crp_flags, req->crp->crp_buf, - req->crd->crd_inject, req->sw->u.hmac.sw_mlen, req->result); - ahash_request_free(req->crypto_req); - break; -#endif -#if defined(HAVE_ABLKCIPHER) - case SW_TYPE_ABLKCIPHER: - ablkcipher_request_free(req->crypto_req); - break; -#endif - case SW_TYPE_CIPHER: - case SW_TYPE_HMAC: - case SW_TYPE_HASH: - case SW_TYPE_COMP: - case SW_TYPE_BLKCIPHER: - break; - default: - req->crp->crp_etype = EINVAL; - goto done; - } - - req->crd = req->crd->crd_next; - if (req->crd) { - swcr_process_req(req); - return; - } - -done: - dprintk("%s crypto_done %p\n", __FUNCTION__, req); - crypto_done(req->crp); - kmem_cache_free(swcr_req_cache, req); -} - -#if defined(HAVE_ABLKCIPHER) || defined(HAVE_AHASH) -static void swcr_process_callback(struct crypto_async_request *creq, int err) -{ - struct swcr_req *req = creq->data; - - dprintk("%s()\n", __FUNCTION__); - if (err) { - if (err == -EINPROGRESS) - return; - dprintk("%s() fail %d\n", __FUNCTION__, -err); - req->crp->crp_etype = -err; - } - - swcr_process_req_complete(req); -} -#endif /* defined(HAVE_ABLKCIPHER) || defined(HAVE_AHASH) */ - - -static void swcr_process_req(struct swcr_req *req) -{ - struct swcr_data *sw; - struct cryptop *crp = req->crp; - struct cryptodesc *crd = req->crd; - struct sk_buff *skb = (struct sk_buff *) crp->crp_buf; - struct uio *uiop = (struct uio *) crp->crp_buf; - int sg_num, sg_len, skip; - - dprintk("%s()\n", __FUNCTION__); - - /* - * Find the crypto context. - * - * XXX Note that the logic here prevents us from having - * XXX the same algorithm multiple times in a session - * XXX (or rather, we can but it won't give us the right - * XXX results). To do that, we'd need some way of differentiating - * XXX between the various instances of an algorithm (so we can - * XXX locate the correct crypto context). - */ - for (sw = req->sw_head; sw && sw->sw_alg != crd->crd_alg; sw = sw->sw_next) - ; - - /* No such context ? */ - if (sw == NULL) { - crp->crp_etype = EINVAL; - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - goto done; - } - - /* - * for some types we need to ensure only one user as info is stored in - * the tfm during an operation that can get corrupted - */ - switch (sw->sw_type & SW_TYPE_ALG_AMASK) { -#ifdef HAVE_AHASH - case SW_TYPE_AHMAC: - case SW_TYPE_AHASH: -#endif - case SW_TYPE_HMAC: - case SW_TYPE_HASH: { - unsigned long flags; - spin_lock_irqsave(&sw->sw_tfm_lock, flags); - if (sw->sw_type & SW_TYPE_INUSE) { - spin_unlock_irqrestore(&sw->sw_tfm_lock, flags); - execute_later((void (*)(void *))swcr_process_req, (void *)req); - return; - } - sw->sw_type |= SW_TYPE_INUSE; - spin_unlock_irqrestore(&sw->sw_tfm_lock, flags); - } break; - } - - req->sw = sw; - skip = crd->crd_skip; - - /* - * setup the SG list skip from the start of the buffer - */ - memset(req->sg, 0, sizeof(req->sg)); - sg_init_table(req->sg, SCATTERLIST_MAX); - if (crp->crp_flags & CRYPTO_F_SKBUF) { - int i, len; - - sg_num = 0; - sg_len = 0; - - if (skip < skb_headlen(skb)) { - len = skb_headlen(skb) - skip; - if (len + sg_len > crd->crd_len) - len = crd->crd_len - sg_len; - sg_set_page(&req->sg[sg_num], - virt_to_page(skb->data + skip), len, - offset_in_page(skb->data + skip)); - sg_len += len; - sg_num++; - skip = 0; - } else - skip -= skb_headlen(skb); - - for (i = 0; sg_len < crd->crd_len && - i < skb_shinfo(skb)->nr_frags && - sg_num < SCATTERLIST_MAX; i++) { - if (skip < skb_shinfo(skb)->frags[i].size) { - len = skb_shinfo(skb)->frags[i].size - skip; - if (len + sg_len > crd->crd_len) - len = crd->crd_len - sg_len; - sg_set_page(&req->sg[sg_num], - skb_frag_page(&skb_shinfo(skb)->frags[i]), - len, - skb_shinfo(skb)->frags[i].page_offset + skip); - sg_len += len; - sg_num++; - skip = 0; - } else - skip -= skb_shinfo(skb)->frags[i].size; - } - } else if (crp->crp_flags & CRYPTO_F_IOV) { - int len; - - sg_len = 0; - for (sg_num = 0; sg_len < crd->crd_len && - sg_num < uiop->uio_iovcnt && - sg_num < SCATTERLIST_MAX; sg_num++) { - if (skip <= uiop->uio_iov[sg_num].iov_len) { - len = uiop->uio_iov[sg_num].iov_len - skip; - if (len + sg_len > crd->crd_len) - len = crd->crd_len - sg_len; - sg_set_page(&req->sg[sg_num], - virt_to_page(uiop->uio_iov[sg_num].iov_base+skip), - len, - offset_in_page(uiop->uio_iov[sg_num].iov_base+skip)); - sg_len += len; - skip = 0; - } else - skip -= uiop->uio_iov[sg_num].iov_len; - } - } else { - sg_len = (crp->crp_ilen - skip); - if (sg_len > crd->crd_len) - sg_len = crd->crd_len; - sg_set_page(&req->sg[0], virt_to_page(crp->crp_buf + skip), - sg_len, offset_in_page(crp->crp_buf + skip)); - sg_num = 1; - } - if (sg_num > 0) - sg_mark_end(&req->sg[sg_num-1]); - - switch (sw->sw_type & SW_TYPE_ALG_AMASK) { - -#ifdef HAVE_AHASH - case SW_TYPE_AHMAC: - case SW_TYPE_AHASH: - { - int ret; - - /* check we have room for the result */ - if (crp->crp_ilen - crd->crd_inject < sw->u.hmac.sw_mlen) { - dprintk("cryptosoft: EINVAL crp_ilen=%d, len=%d, inject=%d " - "digestsize=%d\n", crp->crp_ilen, crd->crd_skip + sg_len, - crd->crd_inject, sw->u.hmac.sw_mlen); - crp->crp_etype = EINVAL; - goto done; - } - - req->crypto_req = - ahash_request_alloc(__crypto_ahash_cast(sw->sw_tfm),GFP_ATOMIC); - if (!req->crypto_req) { - crp->crp_etype = ENOMEM; - dprintk("%s,%d: ENOMEM ahash_request_alloc", __FILE__, __LINE__); - goto done; - } - - ahash_request_set_callback(req->crypto_req, - CRYPTO_TFM_REQ_MAY_BACKLOG, swcr_process_callback, req); - - memset(req->result, 0, sizeof(req->result)); - - if (sw->sw_type & SW_TYPE_AHMAC) - crypto_ahash_setkey(__crypto_ahash_cast(sw->sw_tfm), - sw->u.hmac.sw_key, sw->u.hmac.sw_klen); - ahash_request_set_crypt(req->crypto_req, req->sg, req->result, sg_len); - ret = crypto_ahash_digest(req->crypto_req); - switch (ret) { - case -EINPROGRESS: - case -EBUSY: - return; - default: - case 0: - dprintk("hash OP %s %d\n", ret ? "failed" : "success", ret); - crp->crp_etype = ret; - goto done; - } - } break; -#endif /* HAVE_AHASH */ - -#ifdef HAVE_ABLKCIPHER - case SW_TYPE_ABLKCIPHER: { - int ret; - unsigned char *ivp = req->iv; - int ivsize = - crypto_ablkcipher_ivsize(__crypto_ablkcipher_cast(sw->sw_tfm)); - - if (sg_len < crypto_ablkcipher_blocksize( - __crypto_ablkcipher_cast(sw->sw_tfm))) { - crp->crp_etype = EINVAL; - dprintk("%s,%d: EINVAL len %d < %d\n", __FILE__, __LINE__, - sg_len, crypto_ablkcipher_blocksize( - __crypto_ablkcipher_cast(sw->sw_tfm))); - goto done; - } - - if (ivsize > sizeof(req->iv)) { - crp->crp_etype = EINVAL; - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - goto done; - } - - req->crypto_req = ablkcipher_request_alloc( - __crypto_ablkcipher_cast(sw->sw_tfm), GFP_ATOMIC); - if (!req->crypto_req) { - crp->crp_etype = ENOMEM; - dprintk("%s,%d: ENOMEM ablkcipher_request_alloc", - __FILE__, __LINE__); - goto done; - } - - ablkcipher_request_set_callback(req->crypto_req, - CRYPTO_TFM_REQ_MAY_BACKLOG, swcr_process_callback, req); - - if (crd->crd_flags & CRD_F_KEY_EXPLICIT) { - int i, error; - - if (debug) { - dprintk("%s key:", __FUNCTION__); - for (i = 0; i < (crd->crd_klen + 7) / 8; i++) - dprintk("%s0x%x", (i % 8) ? " " : "\n ", - crd->crd_key[i] & 0xff); - dprintk("\n"); - } - /* OCF doesn't enforce keys */ - crypto_ablkcipher_set_flags(__crypto_ablkcipher_cast(sw->sw_tfm), - CRYPTO_TFM_REQ_WEAK_KEY); - error = crypto_ablkcipher_setkey( - __crypto_ablkcipher_cast(sw->sw_tfm), crd->crd_key, - (crd->crd_klen + 7) / 8); - if (error) { - dprintk("cryptosoft: setkey failed %d (crt_flags=0x%x)\n", - error, sw->sw_tfm->crt_flags); - crp->crp_etype = -error; - } - } - - if (crd->crd_flags & CRD_F_ENCRYPT) { /* encrypt */ - - if (crd->crd_flags & CRD_F_IV_EXPLICIT) - ivp = crd->crd_iv; - else - get_random_bytes(ivp, ivsize); - /* - * do we have to copy the IV back to the buffer ? - */ - if ((crd->crd_flags & CRD_F_IV_PRESENT) == 0) { - crypto_copyback(crp->crp_flags, crp->crp_buf, - crd->crd_inject, ivsize, (caddr_t)ivp); - } - ablkcipher_request_set_crypt(req->crypto_req, req->sg, req->sg, - sg_len, ivp); - ret = crypto_ablkcipher_encrypt(req->crypto_req); - - } else { /*decrypt */ - - if (crd->crd_flags & CRD_F_IV_EXPLICIT) - ivp = crd->crd_iv; - else - crypto_copydata(crp->crp_flags, crp->crp_buf, - crd->crd_inject, ivsize, (caddr_t)ivp); - ablkcipher_request_set_crypt(req->crypto_req, req->sg, req->sg, - sg_len, ivp); - ret = crypto_ablkcipher_decrypt(req->crypto_req); - } - - switch (ret) { - case -EINPROGRESS: - case -EBUSY: - return; - default: - case 0: - dprintk("crypto OP %s %d\n", ret ? "failed" : "success", ret); - crp->crp_etype = ret; - goto done; - } - } break; -#endif /* HAVE_ABLKCIPHER */ - - case SW_TYPE_BLKCIPHER: { - unsigned char iv[EALG_MAX_BLOCK_LEN]; - unsigned char *ivp = iv; - struct blkcipher_desc desc; - int ivsize = crypto_blkcipher_ivsize(crypto_blkcipher_cast(sw->sw_tfm)); - - if (sg_len < crypto_blkcipher_blocksize( - crypto_blkcipher_cast(sw->sw_tfm))) { - crp->crp_etype = EINVAL; - dprintk("%s,%d: EINVAL len %d < %d\n", __FILE__, __LINE__, - sg_len, crypto_blkcipher_blocksize( - crypto_blkcipher_cast(sw->sw_tfm))); - goto done; - } - - if (ivsize > sizeof(iv)) { - crp->crp_etype = EINVAL; - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - goto done; - } - - if (crd->crd_flags & CRD_F_KEY_EXPLICIT) { - int i, error; - - if (debug) { - dprintk("%s key:", __FUNCTION__); - for (i = 0; i < (crd->crd_klen + 7) / 8; i++) - dprintk("%s0x%x", (i % 8) ? " " : "\n ", - crd->crd_key[i] & 0xff); - dprintk("\n"); - } - /* OCF doesn't enforce keys */ - crypto_blkcipher_set_flags(crypto_blkcipher_cast(sw->sw_tfm), - CRYPTO_TFM_REQ_WEAK_KEY); - error = crypto_blkcipher_setkey( - crypto_blkcipher_cast(sw->sw_tfm), crd->crd_key, - (crd->crd_klen + 7) / 8); - if (error) { - dprintk("cryptosoft: setkey failed %d (crt_flags=0x%x)\n", - error, sw->sw_tfm->crt_flags); - crp->crp_etype = -error; - } - } - - memset(&desc, 0, sizeof(desc)); - desc.tfm = crypto_blkcipher_cast(sw->sw_tfm); - - if (crd->crd_flags & CRD_F_ENCRYPT) { /* encrypt */ - - if (crd->crd_flags & CRD_F_IV_EXPLICIT) { - ivp = crd->crd_iv; - } else { - get_random_bytes(ivp, ivsize); - } - /* - * do we have to copy the IV back to the buffer ? - */ - if ((crd->crd_flags & CRD_F_IV_PRESENT) == 0) { - crypto_copyback(crp->crp_flags, crp->crp_buf, - crd->crd_inject, ivsize, (caddr_t)ivp); - } - desc.info = ivp; - crypto_blkcipher_encrypt_iv(&desc, req->sg, req->sg, sg_len); - - } else { /*decrypt */ - - if (crd->crd_flags & CRD_F_IV_EXPLICIT) { - ivp = crd->crd_iv; - } else { - crypto_copydata(crp->crp_flags, crp->crp_buf, - crd->crd_inject, ivsize, (caddr_t)ivp); - } - desc.info = ivp; - crypto_blkcipher_decrypt_iv(&desc, req->sg, req->sg, sg_len); - } - } break; - - case SW_TYPE_HMAC: - case SW_TYPE_HASH: - { - char result[HASH_MAX_LEN]; - struct hash_desc desc; - - /* check we have room for the result */ - if (crp->crp_ilen - crd->crd_inject < sw->u.hmac.sw_mlen) { - dprintk("cryptosoft: EINVAL crp_ilen=%d, len=%d, inject=%d " - "digestsize=%d\n", crp->crp_ilen, crd->crd_skip + sg_len, - crd->crd_inject, sw->u.hmac.sw_mlen); - crp->crp_etype = EINVAL; - goto done; - } - - memset(&desc, 0, sizeof(desc)); - desc.tfm = crypto_hash_cast(sw->sw_tfm); - - memset(result, 0, sizeof(result)); - - if (sw->sw_type & SW_TYPE_HMAC) { -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) - crypto_hmac(sw->sw_tfm, sw->u.hmac.sw_key, &sw->u.hmac.sw_klen, - req->sg, sg_num, result); -#else - crypto_hash_setkey(desc.tfm, sw->u.hmac.sw_key, - sw->u.hmac.sw_klen); - crypto_hash_digest(&desc, req->sg, sg_len, result); -#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) */ - - } else { /* SW_TYPE_HASH */ - crypto_hash_digest(&desc, req->sg, sg_len, result); - } - - crypto_copyback(crp->crp_flags, crp->crp_buf, - crd->crd_inject, sw->u.hmac.sw_mlen, result); - } - break; - - case SW_TYPE_COMP: { - void *ibuf = NULL; - void *obuf = sw->u.sw_comp_buf; - int ilen = sg_len, olen = CRYPTO_MAX_DATA_LEN; - int ret = 0; - - /* - * we need to use an additional copy if there is more than one - * input chunk since the kernel comp routines do not handle - * SG yet. Otherwise we just use the input buffer as is. - * Rather than allocate another buffer we just split the tmp - * buffer we already have. - * Perhaps we should just use zlib directly ? - */ - if (sg_num > 1) { - int blk; - - ibuf = obuf; - for (blk = 0; blk < sg_num; blk++) { - memcpy(obuf, sg_virt(&req->sg[blk]), - req->sg[blk].length); - obuf += req->sg[blk].length; - } - olen -= sg_len; - } else - ibuf = sg_virt(&req->sg[0]); - - if (crd->crd_flags & CRD_F_ENCRYPT) { /* compress */ - ret = crypto_comp_compress(crypto_comp_cast(sw->sw_tfm), - ibuf, ilen, obuf, &olen); - if (!ret && olen > crd->crd_len) { - dprintk("cryptosoft: ERANGE compress %d into %d\n", - crd->crd_len, olen); - if (swcr_fail_if_compression_grows) - ret = ERANGE; - } - } else { /* decompress */ - ret = crypto_comp_decompress(crypto_comp_cast(sw->sw_tfm), - ibuf, ilen, obuf, &olen); - if (!ret && (olen + crd->crd_inject) > crp->crp_olen) { - dprintk("cryptosoft: ETOOSMALL decompress %d into %d, " - "space for %d,at offset %d\n", - crd->crd_len, olen, crp->crp_olen, crd->crd_inject); - ret = ETOOSMALL; - } - } - if (ret) - dprintk("%s,%d: ret = %d\n", __FILE__, __LINE__, ret); - - /* - * on success copy result back, - * linux crpyto API returns -errno, we need to fix that - */ - crp->crp_etype = ret < 0 ? -ret : ret; - if (ret == 0) { - /* copy back the result and return it's size */ - crypto_copyback(crp->crp_flags, crp->crp_buf, - crd->crd_inject, olen, obuf); - crp->crp_olen = olen; - } - } break; - - default: - /* Unknown/unsupported algorithm */ - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - crp->crp_etype = EINVAL; - goto done; - } - -done: - swcr_process_req_complete(req); -} - - -/* - * Process a crypto request. - */ -static int -swcr_process(device_t dev, struct cryptop *crp, int hint) -{ - struct swcr_req *req = NULL; - u_int32_t lid; - - dprintk("%s()\n", __FUNCTION__); - /* Sanity check */ - if (crp == NULL) { - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - return EINVAL; - } - - crp->crp_etype = 0; - - if (crp->crp_desc == NULL || crp->crp_buf == NULL) { - dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__); - crp->crp_etype = EINVAL; - goto done; - } - - lid = crp->crp_sid & 0xffffffff; - if (lid >= swcr_sesnum || lid == 0 || swcr_sessions == NULL || - swcr_sessions[lid] == NULL) { - crp->crp_etype = ENOENT; - dprintk("%s,%d: ENOENT\n", __FILE__, __LINE__); - goto done; - } - - /* - * do some error checking outside of the loop for SKB and IOV processing - * this leaves us with valid skb or uiop pointers for later - */ - if (crp->crp_flags & CRYPTO_F_SKBUF) { - struct sk_buff *skb = (struct sk_buff *) crp->crp_buf; - if (skb_shinfo(skb)->nr_frags >= SCATTERLIST_MAX) { - printk("%s,%d: %d nr_frags > SCATTERLIST_MAX", __FILE__, __LINE__, - skb_shinfo(skb)->nr_frags); - goto done; - } - } else if (crp->crp_flags & CRYPTO_F_IOV) { - struct uio *uiop = (struct uio *) crp->crp_buf; - if (uiop->uio_iovcnt > SCATTERLIST_MAX) { - printk("%s,%d: %d uio_iovcnt > SCATTERLIST_MAX", __FILE__, __LINE__, - uiop->uio_iovcnt); - goto done; - } - } - - /* - * setup a new request ready for queuing - */ - req = kmem_cache_alloc(swcr_req_cache, SLAB_ATOMIC); - if (req == NULL) { - dprintk("%s,%d: ENOMEM\n", __FILE__, __LINE__); - crp->crp_etype = ENOMEM; - goto done; - } - memset(req, 0, sizeof(*req)); - - req->sw_head = swcr_sessions[lid]; - req->crp = crp; - req->crd = crp->crp_desc; - - swcr_process_req(req); - return 0; - -done: - crypto_done(crp); - if (req) - kmem_cache_free(swcr_req_cache, req); - return 0; -} - - -static int -cryptosoft_init(void) -{ - int i, sw_type, mode; - char *algo; - - dprintk("%s(%p)\n", __FUNCTION__, cryptosoft_init); - - swcr_req_cache = kmem_cache_create("cryptosoft_req", - sizeof(struct swcr_req), 0, SLAB_HWCACHE_ALIGN, NULL -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23) - , NULL -#endif - ); - if (!swcr_req_cache) { - printk("cryptosoft: failed to create request cache\n"); - return -ENOENT; - } - - softc_device_init(&swcr_softc, "cryptosoft", 0, swcr_methods); - - swcr_id = crypto_get_driverid(softc_get_device(&swcr_softc), - CRYPTOCAP_F_SOFTWARE | CRYPTOCAP_F_SYNC); - if (swcr_id < 0) { - printk("cryptosoft: Software crypto device cannot initialize!"); - return -ENODEV; - } - -#define REGISTER(alg) \ - crypto_register(swcr_id, alg, 0,0) - - for (i = 0; i < sizeof(crypto_details)/sizeof(crypto_details[0]); i++) { - int found; - - algo = crypto_details[i].alg_name; - if (!algo || !*algo) { - dprintk("%s:Algorithm %d not supported\n", __FUNCTION__, i); - continue; - } - - mode = crypto_details[i].mode; - sw_type = crypto_details[i].sw_type; - - found = 0; - switch (sw_type & SW_TYPE_ALG_MASK) { - case SW_TYPE_CIPHER: - found = crypto_has_cipher(algo, 0, CRYPTO_ALG_ASYNC); - break; - case SW_TYPE_HMAC: - found = crypto_has_hash(algo, 0, swcr_no_ahash?CRYPTO_ALG_ASYNC:0); - break; - case SW_TYPE_HASH: - found = crypto_has_hash(algo, 0, swcr_no_ahash?CRYPTO_ALG_ASYNC:0); - break; - case SW_TYPE_COMP: - found = crypto_has_comp(algo, 0, CRYPTO_ALG_ASYNC); - break; - case SW_TYPE_BLKCIPHER: - found = crypto_has_blkcipher(algo, 0, CRYPTO_ALG_ASYNC); - if (!found && !swcr_no_ablk) - found = crypto_has_ablkcipher(algo, 0, 0); - break; - } - if (found) { - REGISTER(i); - } else { - dprintk("%s:Algorithm Type %d not supported (algorithm %d:'%s')\n", - __FUNCTION__, sw_type, i, algo); - } - } - return 0; -} - -static void -cryptosoft_exit(void) -{ - dprintk("%s()\n", __FUNCTION__); - crypto_unregister_all(swcr_id); - swcr_id = -1; - kmem_cache_destroy(swcr_req_cache); -} - -late_initcall(cryptosoft_init); -module_exit(cryptosoft_exit); - -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_AUTHOR("David McCullough <david_mccullough@mcafee.com>"); -MODULE_DESCRIPTION("Cryptosoft (OCF module for kernel crypto)"); |