From: Corentin Labbe clabbe@baylibre.com
[ Upstream commit e8acf011f2e7e21a7e2fae47cbaa06598e533d40 ]
Crypto selftests fail on ixp4xx since it do not update IV after skcipher requests.
Fixes: 81bef0150074 ("crypto: ixp4xx - Hardware crypto support for IXP4xx CPUs") Signed-off-by: Corentin Labbe clabbe@baylibre.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/ixp4xx_crypto.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c index 9e330e93e340..7567456a21a0 100644 --- a/drivers/crypto/ixp4xx_crypto.c +++ b/drivers/crypto/ixp4xx_crypto.c @@ -149,6 +149,8 @@ struct crypt_ctl { struct ablk_ctx { struct buffer_desc *src; struct buffer_desc *dst; + u8 iv[MAX_IVLEN]; + bool encrypt; };
struct aead_ctx { @@ -381,6 +383,20 @@ static void one_packet(dma_addr_t phys) case CTL_FLAG_PERFORM_ABLK: { struct skcipher_request *req = crypt->data.ablk_req; struct ablk_ctx *req_ctx = skcipher_request_ctx(req); + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + unsigned int ivsize = crypto_skcipher_ivsize(tfm); + unsigned int offset; + + if (ivsize > 0) { + offset = req->cryptlen - ivsize; + if (req_ctx->encrypt) { + scatterwalk_map_and_copy(req->iv, req->dst, + offset, ivsize, 0); + } else { + memcpy(req->iv, req_ctx->iv, ivsize); + memzero_explicit(req_ctx->iv, ivsize); + } + }
if (req_ctx->dst) { free_buf_chain(dev, req_ctx->dst, crypt->dst_buf); @@ -876,6 +892,7 @@ static int ablk_perform(struct skcipher_request *req, int encrypt) struct ablk_ctx *req_ctx = skcipher_request_ctx(req); struct buffer_desc src_hook; struct device *dev = &pdev->dev; + unsigned int offset; gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC;
@@ -885,6 +902,7 @@ static int ablk_perform(struct skcipher_request *req, int encrypt) return -EAGAIN;
dir = encrypt ? &ctx->encrypt : &ctx->decrypt; + req_ctx->encrypt = encrypt;
crypt = get_crypt_desc(); if (!crypt) @@ -900,6 +918,10 @@ static int ablk_perform(struct skcipher_request *req, int encrypt)
BUG_ON(ivsize && !req->iv); memcpy(crypt->iv, req->iv, ivsize); + if (ivsize > 0 && !encrypt) { + offset = req->cryptlen - ivsize; + scatterwalk_map_and_copy(req_ctx->iv, req->src, offset, ivsize, 0); + } if (req->src != req->dst) { struct buffer_desc dst_hook; crypt->mode |= NPE_OP_NOT_IN_PLACE;