Changed the __driver-gcm-aes-aesni to be a proper aead algorithm.
Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
---
arch/x86/crypto/aesni-intel_glue.c | 53 ++++++++++++++++++++++++++----------
1 file changed, 39 insertions(+), 14 deletions(-)
diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index 947c6bf..5544ad9 100644
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -890,15 +890,12 @@ out_free_ablkcipher:
return ret;
}
-static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key,
- unsigned int key_len)
+static int common_rfc4106_set_key(struct crypto_aead *aead, const u8 *key,
+ unsigned int key_len)
{
int ret = 0;
- struct crypto_tfm *tfm = crypto_aead_tfm(parent);
- struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent);
- struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
- struct aesni_rfc4106_gcm_ctx *child_ctx =
- aesni_rfc4106_gcm_ctx_get(cryptd_child);
+ struct crypto_tfm *tfm = crypto_aead_tfm(aead);
+ struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(aead);
u8 *new_key_align, *new_key_mem = NULL;
if (key_len < 4) {
@@ -943,20 +940,29 @@ static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key,
goto exit;
}
ret = rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len);
- memcpy(child_ctx, ctx, sizeof(*ctx));
exit:
kfree(new_key_mem);
return ret;
}
-/* This is the Integrity Check Value (aka the authentication tag length and can
- * be 8, 12 or 16 bytes long. */
-static int rfc4106_set_authsize(struct crypto_aead *parent,
- unsigned int authsize)
+static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key,
+ unsigned int key_len)
{
struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent);
struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
+ struct aesni_rfc4106_gcm_ctx *child_ctx =
+ aesni_rfc4106_gcm_ctx_get(cryptd_child);
+ int ret;
+ ret = common_rfc4106_set_key(parent, key, key_len);
+ if (!ret)
+ memcpy(child_ctx, ctx, sizeof(*ctx));
+ return ret;
+}
+
+static int common_rfc4106_set_authsize(struct crypto_aead *aead,
+ unsigned int authsize)
+{
switch (authsize) {
case 8:
case 12:
@@ -965,11 +971,26 @@ static int rfc4106_set_authsize(struct crypto_aead *parent,
default:
return -EINVAL;
}
- crypto_aead_crt(parent)->authsize = authsize;
- crypto_aead_crt(cryptd_child)->authsize = authsize;
+ crypto_aead_crt(aead)->authsize = authsize;
return 0;
}
+/* This is the Integrity Check Value (aka the authentication tag length and can
+ * be 8, 12 or 16 bytes long. */
+static int rfc4106_set_authsize(struct crypto_aead *parent,
+ unsigned int authsize)
+{
+ struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent);
+ struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
+ int ret;
+
+ ret = common_rfc4106_set_authsize(parent, authsize);
+ if (!ret)
+ ret = common_rfc4106_set_authsize(cryptd_child, authsize);
+
+ return ret;
+}
+
static int rfc4106_encrypt(struct aead_request *req)
{
int ret;
@@ -1366,8 +1387,12 @@ static struct crypto_alg aesni_algs[] = { {
.cra_module = THIS_MODULE,
.cra_u = {
.aead = {
+ .setkey = common_rfc4106_set_key,
+ .setauthsize = common_rfc4106_set_authsize,
.encrypt = __driver_rfc4106_encrypt,
.decrypt = __driver_rfc4106_decrypt,
+ .ivsize = 8,
+ .maxauthsize = 16,
},
},
}, {
--
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