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crypto: inside-secure - make the context control size dynamic 

This patch makes the context control size computation dynamic, not to
rely on hardcoded values. This is better for the future, and will help
adding the AEAD support.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Antoine Tenart 2018-05-14 15:10:58 +02:00 committed by Herbert Xu
parent 3a5ca230bb
commit fef0cfe577
1 changed files with 2 additions and 3 deletions
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5
drivers/crypto/inside-secure/safexcel_cipher.c
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@ -118,21 +118,20 @@ static int safexcel_context_control(struct safexcel_cipher_ctx *ctx,
switch (ctx->key_len) {
case AES_KEYSIZE_128:
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES128;
ctrl_size = 4;
break;
case AES_KEYSIZE_192:
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES192;
ctrl_size = 6;
break;
case AES_KEYSIZE_256:
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES256;
ctrl_size = 8;
break;
default:
dev_err(priv->dev, "aes keysize not supported: %u\n",
ctx->key_len);
return -EINVAL;
}
ctrl_size = ctx->key_len / sizeof(u32);
cdesc->control_data.control0 |= CONTEXT_CONTROL_SIZE(ctrl_size);
return 0;