diff options
Diffstat (limited to 'target/linux/ipq40xx/patches-4.19/049-crypto-qce-handle-AES-XTS-cases-that-qce-fails.patch')
| -rw-r--r-- | target/linux/ipq40xx/patches-4.19/049-crypto-qce-handle-AES-XTS-cases-that-qce-fails.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/patches-4.19/049-crypto-qce-handle-AES-XTS-cases-that-qce-fails.patch b/target/linux/ipq40xx/patches-4.19/049-crypto-qce-handle-AES-XTS-cases-that-qce-fails.patch new file mode 100644 index 0000000000..00dc3791ab --- /dev/null +++ b/target/linux/ipq40xx/patches-4.19/049-crypto-qce-handle-AES-XTS-cases-that-qce-fails.patch @@ -0,0 +1,53 @@ +From bbf2b1cf22dc98f3df33b6666df046dfb9564d91 Mon Sep 17 00:00:00 2001 +From: Eneas U de Queiroz <cotequeiroz@gmail.com> +Date: Wed, 5 Feb 2020 13:42:25 -0300 +Subject: [PATCH] crypto: qce - handle AES-XTS cases that qce fails + +QCE hangs when presented with an AES-XTS request whose length is larger +than QCE_SECTOR_SIZE (512-bytes), and is not a multiple of it. Let the +fallback cipher handle them. + +Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com> + +--- a/drivers/crypto/qce/common.c ++++ b/drivers/crypto/qce/common.c +@@ -23,8 +23,6 @@ + #include "regs-v5.h" + #include "sha.h" + +-#define QCE_SECTOR_SIZE 512 +- + static inline u32 qce_read(struct qce_device *qce, u32 offset) + { + return readl(qce->base + offset); +--- a/drivers/crypto/qce/common.h ++++ b/drivers/crypto/qce/common.h +@@ -20,6 +20,9 @@ + #include <crypto/hash.h> + #include <crypto/internal/skcipher.h> + ++/* xts du size */ ++#define QCE_SECTOR_SIZE 512 ++ + /* key size in bytes */ + #define QCE_SHA_HMAC_KEY_SIZE 64 + #define QCE_MAX_CIPHER_KEY_SIZE AES_KEYSIZE_256 +--- a/drivers/crypto/qce/skcipher.c ++++ b/drivers/crypto/qce/skcipher.c +@@ -213,9 +213,14 @@ static int qce_skcipher_crypt(struct skc + rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT; + keylen = IS_XTS(rctx->flags) ? ctx->enc_keylen >> 1 : ctx->enc_keylen; + ++ /* qce is hanging when AES-XTS request len > QCE_SECTOR_SIZE and ++ * is not a multiple of it; pass such requests to the fallback ++ */ + if (IS_AES(rctx->flags) && +- ((keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_256) || +- req->cryptlen <= aes_sw_max_len)) { ++ (((keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_256) || ++ req->cryptlen <= aes_sw_max_len) || ++ (IS_XTS(rctx->flags) && req->cryptlen > QCE_SECTOR_SIZE && ++ req->cryptlen % QCE_SECTOR_SIZE))) { + SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback); + + skcipher_request_set_tfm(subreq, ctx->fallback); |