diff options
Diffstat (limited to 'target/linux/ipq40xx/patches-4.19/047-crypto-qce-use-cryptlen-when-adding-extra-sgl.patch')
| -rw-r--r-- | target/linux/ipq40xx/patches-4.19/047-crypto-qce-use-cryptlen-when-adding-extra-sgl.patch | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/target/linux/ipq40xx/patches-4.19/047-crypto-qce-use-cryptlen-when-adding-extra-sgl.patch b/target/linux/ipq40xx/patches-4.19/047-crypto-qce-use-cryptlen-when-adding-extra-sgl.patch deleted file mode 100644 index aabc8fd622..0000000000 --- a/target/linux/ipq40xx/patches-4.19/047-crypto-qce-use-cryptlen-when-adding-extra-sgl.patch +++ /dev/null @@ -1,83 +0,0 @@ -From 686aa4db696270dadc5e8b2971769e1676251ff1 Mon Sep 17 00:00:00 2001 -From: Eneas U de Queiroz <cotequeiroz@gmail.com> -Date: Fri, 31 Jan 2020 17:43:16 -0300 -Subject: [PATCH] crypto: qce - use cryptlen when adding extra sgl - -The qce crypto driver appends an extra entry to the dst sgl, to maintain -private state information. - -When the gcm driver sends requests to the ctr skcipher, it passes the -authentication tag after the actual crypto payload, but it must not be -touched. - -Commit 1336c2221bee ("crypto: qce - save a sg table slot for result -buf") limited the destination sgl to avoid overwriting the -authentication tag but it assumed the tag would be in a separate sgl -entry. - -This is not always the case, so it is better to limit the length of the -destination buffer to req->cryptlen before appending the result buf. - -Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com> - ---- a/drivers/crypto/qce/dma.c -+++ b/drivers/crypto/qce/dma.c -@@ -56,9 +56,10 @@ void qce_dma_release(struct qce_dma_data - - struct scatterlist * - qce_sgtable_add(struct sg_table *sgt, struct scatterlist *new_sgl, -- int max_ents) -+ unsigned int max_len) - { - struct scatterlist *sg = sgt->sgl, *sg_last = NULL; -+ unsigned int new_len; - - while (sg) { - if (!sg_page(sg)) -@@ -69,13 +70,13 @@ qce_sgtable_add(struct sg_table *sgt, st - if (!sg) - return ERR_PTR(-EINVAL); - -- while (new_sgl && sg && max_ents) { -- sg_set_page(sg, sg_page(new_sgl), new_sgl->length, -- new_sgl->offset); -+ while (new_sgl && sg && max_len) { -+ new_len = new_sgl->length > max_len ? max_len : new_sgl->length; -+ sg_set_page(sg, sg_page(new_sgl), new_len, new_sgl->offset); - sg_last = sg; - sg = sg_next(sg); - new_sgl = sg_next(new_sgl); -- max_ents--; -+ max_len -= new_len; - } - - return sg_last; ---- a/drivers/crypto/qce/dma.h -+++ b/drivers/crypto/qce/dma.h -@@ -51,6 +51,6 @@ void qce_dma_issue_pending(struct qce_dm - int qce_dma_terminate_all(struct qce_dma_data *dma); - struct scatterlist * - qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add, -- int max_ents); -+ unsigned int max_len); - - #endif /* _DMA_H_ */ ---- a/drivers/crypto/qce/skcipher.c -+++ b/drivers/crypto/qce/skcipher.c -@@ -105,13 +105,14 @@ qce_skcipher_async_req_handle(struct cry - - sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ); - -- sg = qce_sgtable_add(&rctx->dst_tbl, req->dst, rctx->dst_nents - 1); -+ sg = qce_sgtable_add(&rctx->dst_tbl, req->dst, req->cryptlen); - if (IS_ERR(sg)) { - ret = PTR_ERR(sg); - goto error_free; - } - -- sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg, 1); -+ sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg, -+ QCE_RESULT_BUF_SZ); - if (IS_ERR(sg)) { - ret = PTR_ERR(sg); - goto error_free; |