diff options
Diffstat (limited to 'arch/x86/crypto/serpent_avx_glue.c')
| -rw-r--r-- | arch/x86/crypto/serpent_avx_glue.c | 115 |
1 files changed, 6 insertions, 109 deletions
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c index dd81bab..31eb567 100644 --- a/arch/x86/crypto/serpent_avx_glue.c +++ b/arch/x86/crypto/serpent_avx_glue.c @@ -40,14 +40,11 @@ #include <asm/xcr.h> #include <asm/xsave.h> #include <asm/serpent-avx.h> +#include <asm/crypto/ablk_helper.h> #include <crypto/scatterwalk.h> #include <linux/workqueue.h> #include <linux/spinlock.h> -struct async_serpent_ctx { - struct cryptd_ablkcipher *cryptd_tfm; -}; - static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) { if (fpu_enabled) @@ -593,106 +590,6 @@ static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, return ret; } -static int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key, - unsigned int key_len) -{ - struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct crypto_ablkcipher *child = &ctx->cryptd_tfm->base; - int err; - - crypto_ablkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); - crypto_ablkcipher_set_flags(child, crypto_ablkcipher_get_flags(tfm) - & CRYPTO_TFM_REQ_MASK); - err = crypto_ablkcipher_setkey(child, key, key_len); - crypto_ablkcipher_set_flags(tfm, crypto_ablkcipher_get_flags(child) - & CRYPTO_TFM_RES_MASK); - return err; -} - -static int __ablk_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct blkcipher_desc desc; - - desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm); - desc.info = req->info; - desc.flags = 0; - - return crypto_blkcipher_crt(desc.tfm)->encrypt( - &desc, req->dst, req->src, req->nbytes); -} - -static int ablk_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); - - if (!irq_fpu_usable()) { - struct ablkcipher_request *cryptd_req = - ablkcipher_request_ctx(req); - - memcpy(cryptd_req, req, sizeof(*req)); - ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); - - return crypto_ablkcipher_encrypt(cryptd_req); - } else { - return __ablk_encrypt(req); - } -} - -static int ablk_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); - - if (!irq_fpu_usable()) { - struct ablkcipher_request *cryptd_req = - ablkcipher_request_ctx(req); - - memcpy(cryptd_req, req, sizeof(*req)); - ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); - - return crypto_ablkcipher_decrypt(cryptd_req); - } else { - struct blkcipher_desc desc; - - desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm); - desc.info = req->info; - desc.flags = 0; - - return crypto_blkcipher_crt(desc.tfm)->decrypt( - &desc, req->dst, req->src, req->nbytes); - } -} - -static void ablk_exit(struct crypto_tfm *tfm) -{ - struct async_serpent_ctx *ctx = crypto_tfm_ctx(tfm); - - cryptd_free_ablkcipher(ctx->cryptd_tfm); -} - -static int ablk_init(struct crypto_tfm *tfm) -{ - struct async_serpent_ctx *ctx = crypto_tfm_ctx(tfm); - struct cryptd_ablkcipher *cryptd_tfm; - char drv_name[CRYPTO_MAX_ALG_NAME]; - - snprintf(drv_name, sizeof(drv_name), "__driver-%s", - crypto_tfm_alg_driver_name(tfm)); - - cryptd_tfm = cryptd_alloc_ablkcipher(drv_name, 0, 0); - if (IS_ERR(cryptd_tfm)) - return PTR_ERR(cryptd_tfm); - - ctx->cryptd_tfm = cryptd_tfm; - tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request) + - crypto_ablkcipher_reqsize(&cryptd_tfm->base); - - return 0; -} - static struct crypto_alg serpent_algs[10] = { { .cra_name = "__ecb-serpent-avx", .cra_driver_name = "__driver-ecb-serpent-avx", @@ -805,7 +702,7 @@ static struct crypto_alg serpent_algs[10] = { { .cra_priority = 500, .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, .cra_blocksize = SERPENT_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_ctxsize = sizeof(struct async_helper_ctx), .cra_alignmask = 0, .cra_type = &crypto_ablkcipher_type, .cra_module = THIS_MODULE, @@ -827,7 +724,7 @@ static struct crypto_alg serpent_algs[10] = { { .cra_priority = 500, .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, .cra_blocksize = SERPENT_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_ctxsize = sizeof(struct async_helper_ctx), .cra_alignmask = 0, .cra_type = &crypto_ablkcipher_type, .cra_module = THIS_MODULE, @@ -850,7 +747,7 @@ static struct crypto_alg serpent_algs[10] = { { .cra_priority = 500, .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, .cra_blocksize = 1, - .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_ctxsize = sizeof(struct async_helper_ctx), .cra_alignmask = 0, .cra_type = &crypto_ablkcipher_type, .cra_module = THIS_MODULE, @@ -874,7 +771,7 @@ static struct crypto_alg serpent_algs[10] = { { .cra_priority = 500, .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, .cra_blocksize = SERPENT_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_ctxsize = sizeof(struct async_helper_ctx), .cra_alignmask = 0, .cra_type = &crypto_ablkcipher_type, .cra_module = THIS_MODULE, @@ -899,7 +796,7 @@ static struct crypto_alg serpent_algs[10] = { { .cra_priority = 500, .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, .cra_blocksize = SERPENT_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_ctxsize = sizeof(struct async_helper_ctx), .cra_alignmask = 0, .cra_type = &crypto_ablkcipher_type, .cra_module = THIS_MODULE, |
