caam/qi needs a fix similar to what was done for caam/jr in
commit "crypto: caam/qi - properly set IV after {en,de}crypt",
to allow for ablkcipher/skcipher chunking/streaming.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: b189817cf789 ("crypto: caam/qi - add ablkcipher and authenc algorithms")
Suggested-by: David Gstir <david@xxxxxxxxxxxxx>
Signed-off-by: Horia Geantă <horia.geanta@xxxxxxx>
---
drivers/crypto/caam/caamalg_qi.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c
index 2dde23abbd3a..a5d634e0aef3 100644
--- a/drivers/crypto/caam/caamalg_qi.c
+++ b/drivers/crypto/caam/caamalg_qi.c
@@ -776,9 +776,9 @@ static void ablkcipher_done(struct caam_drv_req *drv_req, u32 status)
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
struct caam_ctx *caam_ctx = crypto_ablkcipher_ctx(ablkcipher);
struct device *qidev = caam_ctx->qidev;
-#ifdef DEBUG
int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
+#ifdef DEBUG
dev_err(qidev, "%s %d: status 0x%x\n", __func__, __LINE__, status);
#endif
@@ -799,6 +799,13 @@ static void ablkcipher_done(struct caam_drv_req *drv_req, u32 status)
ablkcipher_unmap(qidev, edesc, req);
qi_cache_free(edesc);
+ /*
+ * The crypto API expects us to set the IV (req->info) to the last
+ * ciphertext block. This is used e.g. by the CTS mode.
+ */
+ scatterwalk_map_and_copy(req->info, req->dst, req->nbytes - ivsize,
+ ivsize, 0);
+
ablkcipher_request_complete(req, status);
}
--
2.12.0.264.gd6db3f216544
