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crypto: caam - unkeyed ahash support 

caam supports and registers unkeyed sha algorithms and md5.

Signed-off-by: Yuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Yuan Kang 2012-06-22 19:48:48 -05:00 committed by Herbert Xu
parent 045e36780f
commit b0e09bae37
1 changed files with 58 additions and 17 deletions
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75
drivers/crypto/caam/caamhash.c
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@ -1485,6 +1485,8 @@ static int ahash_import(struct ahash_request *req, const void *in)
struct caam_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];
unsigned int blocksize;
struct ahash_alg template_ahash;
u32 alg_type;
@ -1494,8 +1496,10 @@ struct caam_hash_template {
/* ahash descriptors */
static struct caam_hash_template driver_hash[] = {
{
.name = "hmac(sha1)",
.driver_name = "hmac-sha1-caam",
.name = "sha1",
.driver_name = "sha1-caam",
.hmac_name = "hmac(sha1)",
.hmac_driver_name = "hmac-sha1-caam",
.blocksize = SHA1_BLOCK_SIZE,
.template_ahash = {
.init = ahash_init,
@ -1513,8 +1517,10 @@ static struct caam_hash_template driver_hash[] = {
.alg_type = OP_ALG_ALGSEL_SHA1,
.alg_op = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC,
}, {
.name = "hmac(sha224)",
.driver_name = "hmac-sha224-caam",
.name = "sha224",
.driver_name = "sha224-caam",
.hmac_name = "hmac(sha224)",
.hmac_driver_name = "hmac-sha224-caam",
.blocksize = SHA224_BLOCK_SIZE,
.template_ahash = {
.init = ahash_init,
@ -1532,8 +1538,10 @@ static struct caam_hash_template driver_hash[] = {
.alg_type = OP_ALG_ALGSEL_SHA224,
.alg_op = OP_ALG_ALGSEL_SHA224 | OP_ALG_AAI_HMAC,
}, {
.name = "hmac(sha256)",
.driver_name = "hmac-sha256-caam",
.name = "sha256",
.driver_name = "sha256-caam",
.hmac_name = "hmac(sha256)",
.hmac_driver_name = "hmac-sha256-caam",
.blocksize = SHA256_BLOCK_SIZE,
.template_ahash = {
.init = ahash_init,
@ -1551,8 +1559,10 @@ static struct caam_hash_template driver_hash[] = {
.alg_type = OP_ALG_ALGSEL_SHA256,
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
}, {
.name = "hmac(sha384)",
.driver_name = "hmac-sha384-caam",
.name = "sha384",
.driver_name = "sha384-caam",
.hmac_name = "hmac(sha384)",
.hmac_driver_name = "hmac-sha384-caam",
.blocksize = SHA384_BLOCK_SIZE,
.template_ahash = {
.init = ahash_init,
@ -1570,8 +1580,10 @@ static struct caam_hash_template driver_hash[] = {
.alg_type = OP_ALG_ALGSEL_SHA384,
.alg_op = OP_ALG_ALGSEL_SHA384 | OP_ALG_AAI_HMAC,
}, {
.name = "hmac(sha512)",
.driver_name = "hmac-sha512-caam",
.name = "sha512",
.driver_name = "sha512-caam",
.hmac_name = "hmac(sha512)",
.hmac_driver_name = "hmac-sha512-caam",
.blocksize = SHA512_BLOCK_SIZE,
.template_ahash = {
.init = ahash_init,
@ -1589,8 +1601,10 @@ static struct caam_hash_template driver_hash[] = {
.alg_type = OP_ALG_ALGSEL_SHA512,
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
}, {
.name = "hmac(md5)",
.driver_name = "hmac-md5-caam",
.name = "md5",
.driver_name = "md5-caam",
.hmac_name = "hmac(md5)",
.hmac_driver_name = "hmac-md5-caam",
.blocksize = MD5_BLOCK_WORDS * 4,
.template_ahash = {
.init = ahash_init,
@ -1721,7 +1735,8 @@ static void __exit caam_algapi_hash_exit(void)
}
static struct caam_hash_alg *
caam_hash_alloc(struct device *ctrldev, struct caam_hash_template *template)
caam_hash_alloc(struct device *ctrldev, struct caam_hash_template *template,
bool keyed)
{
struct caam_hash_alg *t_alg;
struct ahash_alg *halg;
@ -1737,9 +1752,17 @@ caam_hash_alloc(struct device *ctrldev, struct caam_hash_template *template)
halg = &t_alg->ahash_alg;
alg = &halg->halg.base;
snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name);
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
template->driver_name);
if (keyed) {
snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
template->hmac_name);
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
template->hmac_driver_name);
} else {
snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
template->name);
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
template->driver_name);
}
alg->cra_module = THIS_MODULE;
alg->cra_init = caam_hash_cra_init;
alg->cra_exit = caam_hash_cra_exit;
@ -1786,7 +1809,25 @@ static int __init caam_algapi_hash_init(void)
/* TODO: check if h/w supports alg */
struct caam_hash_alg *t_alg;
t_alg = caam_hash_alloc(ctrldev, &driver_hash[i]);
/* register hmac version */
t_alg = caam_hash_alloc(ctrldev, &driver_hash[i], true);
if (IS_ERR(t_alg)) {
err = PTR_ERR(t_alg);
dev_warn(ctrldev, "%s alg allocation failed\n",
driver_hash[i].driver_name);
continue;
}
err = crypto_register_ahash(&t_alg->ahash_alg);
if (err) {
dev_warn(ctrldev, "%s alg registration failed\n",
t_alg->ahash_alg.halg.base.cra_driver_name);
kfree(t_alg);
} else
list_add_tail(&t_alg->entry, &priv->hash_list);
/* register unkeyed version */
t_alg = caam_hash_alloc(ctrldev, &driver_hash[i], false);
if (IS_ERR(t_alg)) {
err = PTR_ERR(t_alg);
dev_warn(ctrldev, "%s alg allocation failed\n",