From: Andrei Botila <andrei.botila@xxxxxxx>
Newer CAAM versions (Era 9+) support 16B IVs. Since for these devices
the HW limitation is no longer present newer version should process the
requests containing 16B IVs directly in hardware without using a fallback.
Signed-off-by: Andrei Botila <andrei.botila@xxxxxxx>
---
drivers/crypto/caam/caamalg_qi.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c
index 1d775a55fcf5..df58a899e97d 100644
--- a/drivers/crypto/caam/caamalg_qi.c
+++ b/drivers/crypto/caam/caamalg_qi.c
@@ -732,6 +732,7 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
{
struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
struct device *jrdev = ctx->jrdev;
+ struct caam_drv_private *ctrlpriv = dev_get_drvdata(jrdev->parent);
int ret = 0;
int err;
@@ -741,9 +742,12 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
return err;
}
- err = crypto_skcipher_setkey(ctx->fallback, key, keylen);
- if (err)
- return err;
+ if (ctrlpriv->era <= 8 || (keylen != 2 * AES_KEYSIZE_128 &&
+ keylen != 2 * AES_KEYSIZE_256)) {
+ err = crypto_skcipher_setkey(ctx->fallback, key, keylen);
+ if (err)
+ return err;
+ }
ctx->cdata.keylen = keylen;
ctx->cdata.key_virt = key;
@@ -1405,12 +1409,13 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt)
struct skcipher_edesc *edesc;
struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
+ struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctx->jrdev->parent);
int ret;
if (!req->cryptlen)
return 0;
- if (ctx->fallback && (xts_skcipher_ivsize(req) ||
+ if (ctx->fallback && ((ctrlpriv->era <= 8 && xts_skcipher_ivsize(req)) ||
(ctx->cdata.keylen != 2 * AES_KEYSIZE_128 &&
ctx->cdata.keylen != 2 * AES_KEYSIZE_256))) {
struct caam_skcipher_req_ctx *rctx = skcipher_request_ctx(req);
--
2.17.1
