diff options
| author |   Andrei Botila <andrei.botila@nxp.com> | 2020-09-22 19:03:27 +0300 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2020-10-02 18:02:12 +1000 |
| commit | 3a15679b93112f1506e67196a4e514168cf5e6c4 (patch) | |
| tree | b0d7dfb4b6fcd5aaad4809b2ae7fd9e91bfe2c83 /drivers/crypto | |
| parent | crypto: caam/jr - add support for XTS with 16B IV (diff) | |
| download | linux-dev-3a15679b93112f1506e67196a4e514168cf5e6c4.tar.xz linux-dev-3a15679b93112f1506e67196a4e514168cf5e6c4.zip | |
crypto: caam/qi - add support for XTS with 16B IV
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@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/caamalg_qi.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c index efcc7cb050fc..66f60d78bdc8 100644 --- a/drivers/crypto/caam/caamalg_qi.c +++ b/drivers/crypto/caam/caamalg_qi.c @@ -733,6 +733,7 @@ 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; @@ -745,9 +746,11 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, if (keylen != 2 * AES_KEYSIZE_128 && keylen != 2 * AES_KEYSIZE_256) ctx->xts_key_fallback = true; - err = crypto_skcipher_setkey(ctx->fallback, key, keylen); - if (err) - return err; + if (ctrlpriv->era <= 8 || ctx->xts_key_fallback) { + err = crypto_skcipher_setkey(ctx->fallback, key, keylen); + if (err) + return err; + } ctx->cdata.keylen = keylen; ctx->cdata.key_virt = key; @@ -1403,6 +1406,7 @@ 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; /* @@ -1413,7 +1417,7 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt) if (!req->cryptlen && !ctx->fallback) return 0; - if (ctx->fallback && (xts_skcipher_ivsize(req) || + if (ctx->fallback && ((ctrlpriv->era <= 8 && xts_skcipher_ivsize(req)) || ctx->xts_key_fallback)) { struct caam_skcipher_req_ctx *rctx = skcipher_request_ctx(req); |