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| author | Eneas U de Queiroz <cotequeiroz@gmail.com> | 2020-02-07 12:02:27 -0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-02-13 17:05:27 +0800 |
| commit | 7f19380b2cfd412dcef2facefb3f6c62788864d7 (patch) | |
| tree | cfbaf70041e790852e01c3a576a9722505cbb7a2 /drivers/crypto/qce | |
| parent | ce163ba0bf298f1707321ac025ef639f88e62801 (diff) | |
| download | linux-7f19380b2cfd412dcef2facefb3f6c62788864d7.tar.bz2 | |
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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/qce')
| -rw-r--r-- | drivers/crypto/qce/common.c | 2 | ||||
| -rw-r--r-- | drivers/crypto/qce/common.h | 3 | ||||
| -rw-r--r-- | drivers/crypto/qce/skcipher.c | 9 |
3 files changed, 10 insertions, 4 deletions
diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c index 629e7f34dc09..5006e74c40cd 100644 --- a/drivers/crypto/qce/common.c +++ b/drivers/crypto/qce/common.c @@ -15,8 +15,6 @@ #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); diff --git a/drivers/crypto/qce/common.h b/drivers/crypto/qce/common.h index 282d4317470d..9f989cba0f1b 100644 --- a/drivers/crypto/qce/common.h +++ b/drivers/crypto/qce/common.h @@ -12,6 +12,9 @@ #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 diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c index fc7c940b5a43..a4f6ec1b64c7 100644 --- a/drivers/crypto/qce/skcipher.c +++ b/drivers/crypto/qce/skcipher.c @@ -227,9 +227,14 @@ static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt) 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))) { SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback); skcipher_request_set_sync_tfm(subreq, ctx->fallback); |