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crypto: padlock-sha - Use init_tfm/exit_tfm interface

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This patch switches padlock-sha over to the new init_tfm/exit_tfm
interface as opposed to cra_init/cra_exit.  This way the shash API
can make sure that descsize does not exceed the maximum.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2019-12-08 13:42:52 +08:00
parent fbce6be5ae
commit 9689569394
1 changed files with 10 additions and 16 deletions
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26
drivers/crypto/padlock-sha.c
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@ -190,13 +190,11 @@ static int padlock_sha256_final(struct shash_desc *desc, u8 *out)
return padlock_sha256_finup(desc, buf, 0, out);
}
static int padlock_cra_init(struct crypto_tfm *tfm)
static int padlock_init_tfm(struct crypto_shash *hash)
{
struct crypto_shash *hash = __crypto_shash_cast(tfm);
const char *fallback_driver_name = crypto_tfm_alg_name(tfm);
struct padlock_sha_ctx *ctx = crypto_tfm_ctx(tfm);
const char *fallback_driver_name = crypto_shash_alg_name(hash);
struct padlock_sha_ctx *ctx = crypto_shash_ctx(hash);
struct crypto_shash *fallback_tfm;
int err = -ENOMEM;
/* Allocate a fallback and abort if it failed. */
fallback_tfm = crypto_alloc_shash(fallback_driver_name, 0,
@ -204,21 +202,17 @@ static int padlock_cra_init(struct crypto_tfm *tfm)
if (IS_ERR(fallback_tfm)) {
printk(KERN_WARNING PFX "Fallback driver '%s' could not be loaded!\n",
fallback_driver_name);
err = PTR_ERR(fallback_tfm);
goto out;
return PTR_ERR(fallback_tfm);
}
ctx->fallback = fallback_tfm;
hash->descsize += crypto_shash_descsize(fallback_tfm);
return 0;
out:
return err;
}
static void padlock_cra_exit(struct crypto_tfm *tfm)
static void padlock_exit_tfm(struct crypto_shash *hash)
{
struct padlock_sha_ctx *ctx = crypto_tfm_ctx(tfm);
struct padlock_sha_ctx *ctx = crypto_shash_ctx(hash);
crypto_free_shash(ctx->fallback);
}
@ -231,6 +225,8 @@ static struct shash_alg sha1_alg = {
.final = padlock_sha1_final,
.export = padlock_sha_export,
.import = padlock_sha_import,
.init_tfm = padlock_init_tfm,
.exit_tfm = padlock_exit_tfm,
.descsize = sizeof(struct padlock_sha_desc),
.statesize = sizeof(struct sha1_state),
.base = {
@ -241,8 +237,6 @@ static struct shash_alg sha1_alg = {
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct padlock_sha_ctx),
.cra_module = THIS_MODULE,
.cra_init = padlock_cra_init,
.cra_exit = padlock_cra_exit,
}
};
@ -254,6 +248,8 @@ static struct shash_alg sha256_alg = {
.final = padlock_sha256_final,
.export = padlock_sha_export,
.import = padlock_sha_import,
.init_tfm = padlock_init_tfm,
.exit_tfm = padlock_exit_tfm,
.descsize = sizeof(struct padlock_sha_desc),
.statesize = sizeof(struct sha256_state),
.base = {
@ -264,8 +260,6 @@ static struct shash_alg sha256_alg = {
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct padlock_sha_ctx),
.cra_module = THIS_MODULE,
.cra_init = padlock_cra_init,
.cra_exit = padlock_cra_exit,
}
};