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[3/4] crypto: akcipher: add crypto_akcipher_type methods needed by templates.

Message ID 1447203525-16796-3-git-send-email-andrew.zaborowski@intel.com (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show

Commit Message

Andrew Zaborowski Nov. 11, 2015, 12:58 a.m. UTC 
Add two dummy methods that are required by the crypto API internals:
.ctxsize and .init
(just because the framework calls them without checking if they were
provided).  They're only required by the complicated code path needed to
instantiate a template algorithm.  Also expose crypto_akcipher_type like
other crypto types are exposed to be used from outside modules.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
---
 crypto/akcipher.c       | 16 +++++++++++++++-
 include/crypto/algapi.h |  1 +
 2 files changed, 16 insertions(+), 1 deletion(-)
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Patch

diff --git a/crypto/akcipher.c b/crypto/akcipher.c
index 120ec04..6ef7f99 100644
--- a/crypto/akcipher.c
+++ b/crypto/akcipher.c
@@ -53,6 +53,11 @@  static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_puts(m, "type         : akcipher\n");
 }
 
+static int crypto_akcipher_init(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+	return 0;
+}
+
 static void crypto_akcipher_exit_tfm(struct crypto_tfm *tfm)
 {
 	struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
@@ -75,8 +80,16 @@  static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm)
 	return 0;
 }
 
-static const struct crypto_type crypto_akcipher_type = {
+static unsigned int crypto_akcipher_ctxsize(struct crypto_alg *alg, u32 type,
+					    u32 mask)
+{
+	return alg->cra_ctxsize;
+}
+
+const struct crypto_type crypto_akcipher_type = {
+	.ctxsize = crypto_akcipher_ctxsize,
 	.extsize = crypto_alg_extsize,
+	.init = crypto_akcipher_init,
 	.init_tfm = crypto_akcipher_init_tfm,
 #ifdef CONFIG_PROC_FS
 	.show = crypto_akcipher_show,
@@ -87,6 +100,7 @@  static const struct crypto_type crypto_akcipher_type = {
 	.type = CRYPTO_ALG_TYPE_AKCIPHER,
 	.tfmsize = offsetof(struct crypto_akcipher, base),
 };
+EXPORT_SYMBOL_GPL(crypto_akcipher_type);
 
 struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
 					      u32 mask)
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index c9fe145..1089f20 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -130,6 +130,7 @@  struct ablkcipher_walk {
 
 extern const struct crypto_type crypto_ablkcipher_type;
 extern const struct crypto_type crypto_blkcipher_type;
+extern const struct crypto_type crypto_akcipher_type;
 
 void crypto_mod_put(struct crypto_alg *alg);