From 7bcfb13630569fab75455fed57fcee6cf9e40096 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sat, 19 May 2018 22:07:38 -0700 Subject: crypto: crc32c-generic - remove cra_alignmask crc32c-generic sets an alignmask, but actually its ->update() works with any alignment; only its ->setkey() and outputting the final digest assume an alignment. To prevent the buffer from having to be aligned by the crypto API for just these cases, switch these cases over to the unaligned access macros and remove the cra_alignmask. Note that this also makes crc32c-generic more consistent with crc32-generic. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- crypto/crc32c_generic.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'crypto') diff --git a/crypto/crc32c_generic.c b/crypto/crc32c_generic.c index 3723203..7283066 100644 --- a/crypto/crc32c_generic.c +++ b/crypto/crc32c_generic.c @@ -35,6 +35,7 @@ * */ +#include #include #include #include @@ -82,7 +83,7 @@ static int chksum_setkey(struct crypto_shash *tfm, const u8 *key, crypto_shash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } - mctx->key = le32_to_cpu(*(__le32 *)key); + mctx->key = get_unaligned_le32(key); return 0; } @@ -99,13 +100,13 @@ static int chksum_final(struct shash_desc *desc, u8 *out) { struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - *(__le32 *)out = ~cpu_to_le32p(&ctx->crc); + put_unaligned_le32(~ctx->crc, out); return 0; } static int __chksum_finup(u32 *crcp, const u8 *data, unsigned int len, u8 *out) { - *(__le32 *)out = ~cpu_to_le32(__crc32c_le(*crcp, data, len)); + put_unaligned_le32(~__crc32c_le(*crcp, data, len), out); return 0; } @@ -148,7 +149,6 @@ static struct shash_alg alg = { .cra_priority = 100, .cra_flags = CRYPTO_ALG_OPTIONAL_KEY, .cra_blocksize = CHKSUM_BLOCK_SIZE, - .cra_alignmask = 3, .cra_ctxsize = sizeof(struct chksum_ctx), .cra_module = THIS_MODULE, .cra_init = crc32c_cra_init, -- cgit v1.1