diff options
| -rw-r--r-- | drivers/crypto/sahara.c | 112 |
1 files changed, 50 insertions, 62 deletions
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index c3f3d89..0c49956 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -14,10 +14,9 @@ * Based on omap-aes.c and tegra-aes.c */ -#include <crypto/algapi.h> #include <crypto/aes.h> -#include <crypto/hash.h> #include <crypto/internal/hash.h> +#include <crypto/internal/skcipher.h> #include <crypto/scatterwalk.h> #include <crypto/sha.h> @@ -150,10 +149,7 @@ struct sahara_ctx { /* AES-specific context */ int keylen; u8 key[AES_KEYSIZE_128]; - struct crypto_ablkcipher *fallback; - - /* SHA-specific context */ - struct crypto_shash *shash_fallback; + struct crypto_skcipher *fallback; }; struct sahara_aes_reqctx { @@ -620,25 +616,21 @@ static int sahara_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key, return 0; } - if (keylen != AES_KEYSIZE_128 && - keylen != AES_KEYSIZE_192 && keylen != AES_KEYSIZE_256) + if (keylen != AES_KEYSIZE_192 && keylen != AES_KEYSIZE_256) return -EINVAL; /* * The requested key size is not supported by HW, do a fallback. */ - ctx->fallback->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; - ctx->fallback->base.crt_flags |= - (tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK); + crypto_skcipher_clear_flags(ctx->fallback, CRYPTO_TFM_REQ_MASK); + crypto_skcipher_set_flags(ctx->fallback, tfm->base.crt_flags & + CRYPTO_TFM_REQ_MASK); - ret = crypto_ablkcipher_setkey(ctx->fallback, key, keylen); - if (ret) { - struct crypto_tfm *tfm_aux = crypto_ablkcipher_tfm(tfm); + ret = crypto_skcipher_setkey(ctx->fallback, key, keylen); - tfm_aux->crt_flags &= ~CRYPTO_TFM_RES_MASK; - tfm_aux->crt_flags |= - (ctx->fallback->base.crt_flags & CRYPTO_TFM_RES_MASK); - } + tfm->base.crt_flags &= ~CRYPTO_TFM_RES_MASK; + tfm->base.crt_flags |= crypto_skcipher_get_flags(ctx->fallback) & + CRYPTO_TFM_RES_MASK; return ret; } @@ -670,16 +662,20 @@ static int sahara_aes_crypt(struct ablkcipher_request *req, unsigned long mode) static int sahara_aes_ecb_encrypt(struct ablkcipher_request *req) { - struct crypto_tfm *tfm = - crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req)); struct sahara_ctx *ctx = crypto_ablkcipher_ctx( crypto_ablkcipher_reqtfm(req)); int err; if (unlikely(ctx->keylen != AES_KEYSIZE_128)) { - ablkcipher_request_set_tfm(req, ctx->fallback); - err = crypto_ablkcipher_encrypt(req); - ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm)); + SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback); + + skcipher_request_set_tfm(subreq, ctx->fallback); + skcipher_request_set_callback(subreq, req->base.flags, + NULL, NULL); + skcipher_request_set_crypt(subreq, req->src, req->dst, + req->nbytes, req->info); + err = crypto_skcipher_encrypt(subreq); + skcipher_request_zero(subreq); return err; } @@ -688,16 +684,20 @@ static int sahara_aes_ecb_encrypt(struct ablkcipher_request *req) static int sahara_aes_ecb_decrypt(struct ablkcipher_request *req) { - struct crypto_tfm *tfm = - crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req)); struct sahara_ctx *ctx = crypto_ablkcipher_ctx( crypto_ablkcipher_reqtfm(req)); int err; if (unlikely(ctx->keylen != AES_KEYSIZE_128)) { - ablkcipher_request_set_tfm(req, ctx->fallback); - err = crypto_ablkcipher_decrypt(req); - ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm)); + SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback); + + skcipher_request_set_tfm(subreq, ctx->fallback); + skcipher_request_set_callback(subreq, req->base.flags, + NULL, NULL); + skcipher_request_set_crypt(subreq, req->src, req->dst, + req->nbytes, req->info); + err = crypto_skcipher_decrypt(subreq); + skcipher_request_zero(subreq); return err; } @@ -706,16 +706,20 @@ static int sahara_aes_ecb_decrypt(struct ablkcipher_request *req) static int sahara_aes_cbc_encrypt(struct ablkcipher_request *req) { - struct crypto_tfm *tfm = - crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req)); struct sahara_ctx *ctx = crypto_ablkcipher_ctx( crypto_ablkcipher_reqtfm(req)); int err; if (unlikely(ctx->keylen != AES_KEYSIZE_128)) { - ablkcipher_request_set_tfm(req, ctx->fallback); - err = crypto_ablkcipher_encrypt(req); - ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm)); + SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback); + + skcipher_request_set_tfm(subreq, ctx->fallback); + skcipher_request_set_callback(subreq, req->base.flags, + NULL, NULL); + skcipher_request_set_crypt(subreq, req->src, req->dst, + req->nbytes, req->info); + err = crypto_skcipher_encrypt(subreq); + skcipher_request_zero(subreq); return err; } @@ -724,16 +728,20 @@ static int sahara_aes_cbc_encrypt(struct ablkcipher_request *req) static int sahara_aes_cbc_decrypt(struct ablkcipher_request *req) { - struct crypto_tfm *tfm = - crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req)); struct sahara_ctx *ctx = crypto_ablkcipher_ctx( crypto_ablkcipher_reqtfm(req)); int err; if (unlikely(ctx->keylen != AES_KEYSIZE_128)) { - ablkcipher_request_set_tfm(req, ctx->fallback); - err = crypto_ablkcipher_decrypt(req); - ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm)); + SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback); + + skcipher_request_set_tfm(subreq, ctx->fallback); + skcipher_request_set_callback(subreq, req->base.flags, + NULL, NULL); + skcipher_request_set_crypt(subreq, req->src, req->dst, + req->nbytes, req->info); + err = crypto_skcipher_decrypt(subreq); + skcipher_request_zero(subreq); return err; } @@ -745,8 +753,9 @@ static int sahara_aes_cra_init(struct crypto_tfm *tfm) const char *name = crypto_tfm_alg_name(tfm); struct sahara_ctx *ctx = crypto_tfm_ctx(tfm); - ctx->fallback = crypto_alloc_ablkcipher(name, 0, - CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK); + ctx->fallback = crypto_alloc_skcipher(name, 0, + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(ctx->fallback)) { pr_err("Error allocating fallback algo %s\n", name); return PTR_ERR(ctx->fallback); @@ -761,9 +770,7 @@ static void sahara_aes_cra_exit(struct crypto_tfm *tfm) { struct sahara_ctx *ctx = crypto_tfm_ctx(tfm); - if (ctx->fallback) - crypto_free_ablkcipher(ctx->fallback); - ctx->fallback = NULL; + crypto_free_skcipher(ctx->fallback); } static u32 sahara_sha_init_hdr(struct sahara_dev *dev, @@ -1180,15 +1187,6 @@ static int sahara_sha_import(struct ahash_request *req, const void *in) static int sahara_sha_cra_init(struct crypto_tfm *tfm) { - const char *name = crypto_tfm_alg_name(tfm); - struct sahara_ctx *ctx = crypto_tfm_ctx(tfm); - - ctx->shash_fallback = crypto_alloc_shash(name, 0, - CRYPTO_ALG_NEED_FALLBACK); - if (IS_ERR(ctx->shash_fallback)) { - pr_err("Error allocating fallback algo %s\n", name); - return PTR_ERR(ctx->shash_fallback); - } crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), sizeof(struct sahara_sha_reqctx) + SHA_BUFFER_LEN + SHA256_BLOCK_SIZE); @@ -1196,14 +1194,6 @@ static int sahara_sha_cra_init(struct crypto_tfm *tfm) return 0; } -static void sahara_sha_cra_exit(struct crypto_tfm *tfm) -{ - struct sahara_ctx *ctx = crypto_tfm_ctx(tfm); - - crypto_free_shash(ctx->shash_fallback); - ctx->shash_fallback = NULL; -} - static struct crypto_alg aes_algs[] = { { .cra_name = "ecb(aes)", @@ -1272,7 +1262,6 @@ static struct ahash_alg sha_v3_algs[] = { .cra_alignmask = 0, .cra_module = THIS_MODULE, .cra_init = sahara_sha_cra_init, - .cra_exit = sahara_sha_cra_exit, } }, }; @@ -1300,7 +1289,6 @@ static struct ahash_alg sha_v4_algs[] = { .cra_alignmask = 0, .cra_module = THIS_MODULE, .cra_init = sahara_sha_cra_init, - .cra_exit = sahara_sha_cra_exit, } }, }; 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