ipq40xx: qce - add fixes for AES ciphers

This backports commits from master that fix AES ciphers when using the
qce driver:

 - A couple of simple fixes for CTR and XTS modes used with AES:
   * 041-crypto-qce-fix-ctr-aes-qce-block-chunk-sizes.patch
   * 042-crypto-qce-fix-xts-aes-qce-key-sizes.patch

 - A fix for a bug that affected cases when there were more entries in
   the input sg list than necessary to actually encrypt, resulting in
   failure in gcm, where the authentication tag is present after the
   encryption data:
   * 043-crypto-qce-save-a-sg-table-slot-for-result-buf.patch

 - A fix to update the IV buffer passed to the driver from the kernel:
   * 044-crypto-qce-update-the-skcipher-IV.patch

 - A patch that reduces memory footprint and driver initialization by
   only initializing the fallback mechanism where it is actually used:
   * 046-crypto-qce-initialize-fallback-only-for-AES.patch

 - Three patches that make gcm and xts modes work with the qce driver,
   and improve performance with small blocks:
   * 047-crypto-qce-use-cryptlen-when-adding-extra-sgl.patch
   * 048-crypto-qce-use-AES-fallback-for-small-requests.patch
   * 049-crypto-qce-handle-AES-XTS-cases-that-qce-fails.patch

 - A patch that allows the hashes/ciphers to be built individually.
   * 051-crypto-qce-allow-building-only-hashes-ciphers.patch

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
[renumbered patches, added patches from dropped commit, refreshed, 5.4]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/target/linux/ipq40xx/patches-5.4/044-crypto-qce-update-the-skcipher-IV.patch b/target/linux/ipq40xx/patches-5.4/044-crypto-qce-update-the-skcipher-IV.patch
new file mode 100644
index 0000000000..5efdb72c44
--- /dev/null
+++ b/target/linux/ipq40xx/patches-5.4/044-crypto-qce-update-the-skcipher-IV.patch
@@ -0,0 +1,31 @@
+From 3e806a12d10af2581aa26c37b58439286eab9782 Mon Sep 17 00:00:00 2001
+From: Eneas U de Queiroz <cotequeiroz@gmail.com>
+Date: Fri, 20 Dec 2019 16:02:16 -0300
+Subject: [PATCH 05/11] crypto: qce - update the skcipher IV
+
+Update the IV after the completion of each cipher operation.
+
+Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+---
+ drivers/crypto/qce/skcipher.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/crypto/qce/skcipher.c
++++ b/drivers/crypto/qce/skcipher.c
+@@ -21,6 +21,7 @@ static void qce_skcipher_done(void *data
+ 	struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ 	struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
+ 	struct qce_device *qce = tmpl->qce;
++	struct qce_result_dump *result_buf = qce->dma.result_buf;
+ 	enum dma_data_direction dir_src, dir_dst;
+ 	u32 status;
+ 	int error;
+@@ -45,6 +46,7 @@ static void qce_skcipher_done(void *data
+ 	if (error < 0)
+ 		dev_dbg(qce->dev, "skcipher operation error (%x)\n", status);
+ 
++	memcpy(rctx->iv, result_buf->encr_cntr_iv, rctx->ivsize);
+ 	qce->async_req_done(tmpl->qce, error);
+ }
+