From c51831be99e13f117721d6e1908d12849e31cab9 Mon Sep 17 00:00:00 2001 From: Gilad Ben-Yossef Date: Sun, 25 Jun 2017 10:47:20 +0300 Subject: [PATCH] staging: ccree: register setkey for none hash macs The original ccree driver was registering a useless setkey method even for non-MAC hash transformations. Somewhere around v4.9 a check was added that failed hash operations if a setkey method was registered but was not called, so during the initial upstream port code was added to only register the setkey method for MAC type hash transform. Unfortunately, the ccree driver also registers non-hash based MAC transforms and the code had a logic error that stopped it registering a setkey callback even for those, thus rendering them useless. This commit fixes the logic mistake, thus correctly registering a setkey method only for MAC transformations, leaving it out for non-MAC ones, whether they are hash based on not. Fixes: 50cfbbb7e627 ("staging: ccree: add ahash support"). Signed-off-by: Gilad Ben-Yossef Signed-off-by: Greg Kroah-Hartman --- drivers/staging/ccree/ssi_hash.c | 83 ++++++++++++++++++++-------------------- 1 file changed, 42 insertions(+), 41 deletions(-) diff --git a/drivers/staging/ccree/ssi_hash.c b/drivers/staging/ccree/ssi_hash.c index ffe8e1a..bfe2bec 100644 --- a/drivers/staging/ccree/ssi_hash.c +++ b/drivers/staging/ccree/ssi_hash.c @@ -1877,8 +1877,8 @@ static int ssi_ahash_setkey(struct crypto_ahash *ahash, struct ssi_hash_template { char name[CRYPTO_MAX_ALG_NAME]; char driver_name[CRYPTO_MAX_ALG_NAME]; - char hmac_name[CRYPTO_MAX_ALG_NAME]; - char hmac_driver_name[CRYPTO_MAX_ALG_NAME]; + char mac_name[CRYPTO_MAX_ALG_NAME]; + char mac_driver_name[CRYPTO_MAX_ALG_NAME]; unsigned int blocksize; bool synchronize; struct ahash_alg template_ahash; @@ -1897,8 +1897,8 @@ static struct ssi_hash_template driver_hash[] = { { .name = "sha1", .driver_name = "sha1-dx", - .hmac_name = "hmac(sha1)", - .hmac_driver_name = "hmac-sha1-dx", + .mac_name = "hmac(sha1)", + .mac_driver_name = "hmac-sha1-dx", .blocksize = SHA1_BLOCK_SIZE, .synchronize = false, .template_ahash = { @@ -1922,8 +1922,8 @@ static struct ssi_hash_template driver_hash[] = { { .name = "sha256", .driver_name = "sha256-dx", - .hmac_name = "hmac(sha256)", - .hmac_driver_name = "hmac-sha256-dx", + .mac_name = "hmac(sha256)", + .mac_driver_name = "hmac-sha256-dx", .blocksize = SHA256_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -1946,8 +1946,8 @@ static struct ssi_hash_template driver_hash[] = { { .name = "sha224", .driver_name = "sha224-dx", - .hmac_name = "hmac(sha224)", - .hmac_driver_name = "hmac-sha224-dx", + .mac_name = "hmac(sha224)", + .mac_driver_name = "hmac-sha224-dx", .blocksize = SHA224_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -1971,8 +1971,8 @@ static struct ssi_hash_template driver_hash[] = { { .name = "sha384", .driver_name = "sha384-dx", - .hmac_name = "hmac(sha384)", - .hmac_driver_name = "hmac-sha384-dx", + .mac_name = "hmac(sha384)", + .mac_driver_name = "hmac-sha384-dx", .blocksize = SHA384_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -1995,8 +1995,8 @@ static struct ssi_hash_template driver_hash[] = { { .name = "sha512", .driver_name = "sha512-dx", - .hmac_name = "hmac(sha512)", - .hmac_driver_name = "hmac-sha512-dx", + .mac_name = "hmac(sha512)", + .mac_driver_name = "hmac-sha512-dx", .blocksize = SHA512_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -2020,8 +2020,8 @@ static struct ssi_hash_template driver_hash[] = { { .name = "md5", .driver_name = "md5-dx", - .hmac_name = "hmac(md5)", - .hmac_driver_name = "hmac-md5-dx", + .mac_name = "hmac(md5)", + .mac_driver_name = "hmac-md5-dx", .blocksize = MD5_HMAC_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -2042,8 +2042,8 @@ static struct ssi_hash_template driver_hash[] = { .inter_digestsize = MD5_DIGEST_SIZE, }, { - .name = "xcbc(aes)", - .driver_name = "xcbc-aes-dx", + .mac_name = "xcbc(aes)", + .mac_driver_name = "xcbc-aes-dx", .blocksize = AES_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -2065,8 +2065,8 @@ static struct ssi_hash_template driver_hash[] = { }, #if SSI_CC_HAS_CMAC { - .name = "cmac(aes)", - .driver_name = "cmac-aes-dx", + .mac_name = "cmac(aes)", + .mac_driver_name = "cmac-aes-dx", .blocksize = AES_BLOCK_SIZE, .template_ahash = { .init = ssi_ahash_init, @@ -2109,9 +2109,9 @@ ssi_hash_create_alg(struct ssi_hash_template *template, bool keyed) if (keyed) { snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", - template->hmac_name); + template->mac_name); snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", - template->hmac_driver_name); + template->mac_driver_name); } else { halg->setkey = NULL; snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", @@ -2300,32 +2300,33 @@ int ssi_hash_alloc(struct ssi_drvdata *drvdata) /* ahash registration */ for (alg = 0; alg < ARRAY_SIZE(driver_hash); alg++) { struct ssi_hash_alg *t_alg; + int hw_mode = driver_hash[alg].hw_mode; /* register hmac version */ + t_alg = ssi_hash_create_alg(&driver_hash[alg], true); + if (IS_ERR(t_alg)) { + rc = PTR_ERR(t_alg); + SSI_LOG_ERR("%s alg allocation failed\n", + driver_hash[alg].driver_name); + goto fail; + } + t_alg->drvdata = drvdata; - if ((((struct ssi_hash_template *)&driver_hash[alg])->hw_mode != DRV_CIPHER_XCBC_MAC) && - (((struct ssi_hash_template *)&driver_hash[alg])->hw_mode != DRV_CIPHER_CMAC)) { - t_alg = ssi_hash_create_alg(&driver_hash[alg], true); - if (IS_ERR(t_alg)) { - rc = PTR_ERR(t_alg); - SSI_LOG_ERR("%s alg allocation failed\n", - driver_hash[alg].driver_name); - goto fail; - } - t_alg->drvdata = drvdata; - - rc = crypto_register_ahash(&t_alg->ahash_alg); - if (unlikely(rc)) { - SSI_LOG_ERR("%s alg registration failed\n", - driver_hash[alg].driver_name); - kfree(t_alg); - goto fail; - } else { - list_add_tail(&t_alg->entry, - &hash_handle->hash_list); - } + rc = crypto_register_ahash(&t_alg->ahash_alg); + if (unlikely(rc)) { + SSI_LOG_ERR("%s alg registration failed\n", + driver_hash[alg].driver_name); + kfree(t_alg); + goto fail; + } else { + list_add_tail(&t_alg->entry, + &hash_handle->hash_list); } + if ((hw_mode == DRV_CIPHER_XCBC_MAC) || + (hw_mode == DRV_CIPHER_CMAC)) + continue; + /* register hash version */ t_alg = ssi_hash_create_alg(&driver_hash[alg], false); if (IS_ERR(t_alg)) { -- 2.7.4