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crypto: img-hash - Add support for export and import

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Currently the img-hash accelerator does not probe
successfully due to a change in the checks made during
registration with the crypto framework. This is due to
import and export functions not being defined. Correct
this.

Signed-off-by: James Hartley <james.hartley@imgtec.com>
Signed-off-by: Will Thomas <will.thomas@imgtec.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
James Hartley 2016-08-05 14:00:18 +01:00 committed by Herbert Xu
parent d084e13a13
commit 436e3bb52b
1 changed files with 63 additions and 6 deletions
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69
drivers/crypto/img-hash.c
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@ -590,6 +590,32 @@ static int img_hash_finup(struct ahash_request *req)
return crypto_ahash_finup(&rctx->fallback_req);
}
static int img_hash_import(struct ahash_request *req, const void *in)
{
struct img_hash_request_ctx *rctx = ahash_request_ctx(req);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
rctx->fallback_req.base.flags = req->base.flags
& CRYPTO_TFM_REQ_MAY_SLEEP;
return crypto_ahash_import(&rctx->fallback_req, in);
}
static int img_hash_export(struct ahash_request *req, void *out)
{
struct img_hash_request_ctx *rctx = ahash_request_ctx(req);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
rctx->fallback_req.base.flags = req->base.flags
& CRYPTO_TFM_REQ_MAY_SLEEP;
return crypto_ahash_export(&rctx->fallback_req, out);
}
static int img_hash_digest(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
@ -646,10 +672,9 @@ static int img_hash_digest(struct ahash_request *req)
return err;
}
static int img_hash_cra_init(struct crypto_tfm *tfm)
static int img_hash_cra_init(struct crypto_tfm *tfm, const char *alg_name)
{
struct img_hash_ctx *ctx = crypto_tfm_ctx(tfm);
const char *alg_name = crypto_tfm_alg_name(tfm);
int err = -ENOMEM;
ctx->fallback = crypto_alloc_ahash(alg_name, 0,
@ -669,6 +694,26 @@ err:
return err;
}
static int img_hash_cra_md5_init(struct crypto_tfm *tfm)
{
return img_hash_cra_init(tfm, "md5-generic");
}
static int img_hash_cra_sha1_init(struct crypto_tfm *tfm)
{
return img_hash_cra_init(tfm, "sha1-generic");
}
static int img_hash_cra_sha224_init(struct crypto_tfm *tfm)
{
return img_hash_cra_init(tfm, "sha224-generic");
}
static int img_hash_cra_sha256_init(struct crypto_tfm *tfm)
{
return img_hash_cra_init(tfm, "sha256-generic");
}
static void img_hash_cra_exit(struct crypto_tfm *tfm)
{
struct img_hash_ctx *tctx = crypto_tfm_ctx(tfm);
@ -714,9 +759,12 @@ static struct ahash_alg img_algs[] = {
.update = img_hash_update,
.final = img_hash_final,
.finup = img_hash_finup,
.export = img_hash_export,
.import = img_hash_import,
.digest = img_hash_digest,
.halg = {
.digestsize = MD5_DIGEST_SIZE,
.statesize = sizeof(struct md5_state),
.base = {
.cra_name = "md5",
.cra_driver_name = "img-md5",
@ -726,7 +774,7 @@ static struct ahash_alg img_algs[] = {
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct img_hash_ctx),
.cra_init = img_hash_cra_init,
.cra_init = img_hash_cra_md5_init,
.cra_exit = img_hash_cra_exit,
.cra_module = THIS_MODULE,
}
@ -737,9 +785,12 @@ static struct ahash_alg img_algs[] = {
.update = img_hash_update,
.final = img_hash_final,
.finup = img_hash_finup,
.export = img_hash_export,
.import = img_hash_import,
.digest = img_hash_digest,
.halg = {
.digestsize = SHA1_DIGEST_SIZE,
.statesize = sizeof(struct sha1_state),
.base = {
.cra_name = "sha1",
.cra_driver_name = "img-sha1",
@ -749,7 +800,7 @@ static struct ahash_alg img_algs[] = {
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct img_hash_ctx),
.cra_init = img_hash_cra_init,
.cra_init = img_hash_cra_sha1_init,
.cra_exit = img_hash_cra_exit,
.cra_module = THIS_MODULE,
}
@ -760,9 +811,12 @@ static struct ahash_alg img_algs[] = {
.update = img_hash_update,
.final = img_hash_final,
.finup = img_hash_finup,
.export = img_hash_export,
.import = img_hash_import,
.digest = img_hash_digest,
.halg = {
.digestsize = SHA224_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name = "img-sha224",
@ -772,7 +826,7 @@ static struct ahash_alg img_algs[] = {
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct img_hash_ctx),
.cra_init = img_hash_cra_init,
.cra_init = img_hash_cra_sha224_init,
.cra_exit = img_hash_cra_exit,
.cra_module = THIS_MODULE,
}
@ -783,9 +837,12 @@ static struct ahash_alg img_algs[] = {
.update = img_hash_update,
.final = img_hash_final,
.finup = img_hash_finup,
.export = img_hash_export,
.import = img_hash_import,
.digest = img_hash_digest,
.halg = {
.digestsize = SHA256_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "img-sha256",
@ -795,7 +852,7 @@ static struct ahash_alg img_algs[] = {
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct img_hash_ctx),
.cra_init = img_hash_cra_init,
.cra_init = img_hash_cra_sha256_init,
.cra_exit = img_hash_cra_exit,
.cra_module = THIS_MODULE,
}