commit 27d2a3300755387d2fec231d37944907ff992ce8
author Herbert Xu <herbert@gondor.apana.org.au> Wed Jan 24 20:50:26 2007 +1100
committer Herbert Xu <herbert@gondor.apana.org.au> Wed Feb 07 09:21:01 2007 +1100
tree c42138c0160b8f0aa3d79860557514e73577e885
parent 2e306ee016fd4750289e65c3b1856db569f1f3f2

[CRYPTO] api: Allow multiple frontends per backend

This patch adds support for multiple frontend types for each backend
algorithm by passing the type and mask through to the backend type
init function.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/api.c

diff --git a/crypto/api.c b/crypto/api.c
index 8b80bae..55af8bb 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -212,12 +212,12 @@
 }
 EXPORT_SYMBOL_GPL(crypto_alg_mod_lookup);
 
-static int crypto_init_ops(struct crypto_tfm *tfm)
+static int crypto_init_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
 {
-	const struct crypto_type *type = tfm->__crt_alg->cra_type;
+	const struct crypto_type *type_obj = tfm->__crt_alg->cra_type;
 
-	if (type)
-		return type->init(tfm);
+	if (type_obj)
+		return type_obj->init(tfm, type, mask);
 
 	switch (crypto_tfm_alg_type(tfm)) {
 	case CRYPTO_ALG_TYPE_CIPHER:
@@ -266,14 +266,14 @@
 	}
 }
 
-static unsigned int crypto_ctxsize(struct crypto_alg *alg)
+static unsigned int crypto_ctxsize(struct crypto_alg *alg, u32 type, u32 mask)
 {
-	const struct crypto_type *type = alg->cra_type;
+	const struct crypto_type *type_obj = alg->cra_type;
 	unsigned int len;
 
 	len = alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1);
-	if (type)
-		return len + type->ctxsize(alg);
+	if (type_obj)
+		return len + type_obj->ctxsize(alg, type, mask);
 
 	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
 	default:
@@ -303,20 +303,21 @@
 }
 EXPORT_SYMBOL_GPL(crypto_shoot_alg);
 
-struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg)
+struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
+				      u32 mask)
 {
 	struct crypto_tfm *tfm = NULL;
 	unsigned int tfm_size;
 	int err = -ENOMEM;
 
-	tfm_size = sizeof(*tfm) + crypto_ctxsize(alg);
+	tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, type, mask);
 	tfm = kzalloc(tfm_size, GFP_KERNEL);
 	if (tfm == NULL)
 		goto out_err;
 
 	tfm->__crt_alg = alg;
 
-	err = crypto_init_ops(tfm);
+	err = crypto_init_ops(tfm, type, mask);
 	if (err)
 		goto out_free_tfm;
 
@@ -372,7 +373,7 @@
 			goto err;
 		}
 
-		tfm = __crypto_alloc_tfm(alg);
+		tfm = __crypto_alloc_tfm(alg, type, mask);
 		if (!IS_ERR(tfm))
 			return tfm;