diff options
Diffstat (limited to '')
-rw-r--r-- | crypto/crct10dif_common.c (renamed from crypto/crct10dif.c) | 100 |
1 files changed, 2 insertions, 98 deletions
diff --git a/crypto/crct10dif.c b/crypto/crct10dif_common.c index 92aca96d..b2fab366 100644 --- a/crypto/crct10dif.c +++ b/crypto/crct10dif_common.c @@ -24,18 +24,10 @@ * */ -#include <linux/types.h> -#include <linux/module.h> #include <linux/crc-t10dif.h> -#include <crypto/internal/hash.h> -#include <linux/init.h> -#include <linux/string.h> +#include <linux/module.h> #include <linux/kernel.h> -struct chksum_desc_ctx { - __u16 crc; -}; - /* Table generated using the following polynomium: * x^16 + x^15 + x^11 + x^9 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1 * gt: 0x8bb7 @@ -86,93 +78,5 @@ __u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, size_t len) } EXPORT_SYMBOL(crc_t10dif_generic); -/* - * Steps through buffer one byte at at time, calculates reflected - * crc using table. - */ - -static int chksum_init(struct shash_desc *desc) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - ctx->crc = 0; - - return 0; -} - -static int chksum_update(struct shash_desc *desc, const u8 *data, - unsigned int length) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - ctx->crc = crc_t10dif_generic(ctx->crc, data, length); - return 0; -} - -static int chksum_final(struct shash_desc *desc, u8 *out) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - *(__u16 *)out = ctx->crc; - return 0; -} - -static int __chksum_finup(__u16 *crcp, const u8 *data, unsigned int len, - u8 *out) -{ - *(__u16 *)out = crc_t10dif_generic(*crcp, data, len); - return 0; -} - -static int chksum_finup(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *out) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - return __chksum_finup(&ctx->crc, data, len, out); -} - -static int chksum_digest(struct shash_desc *desc, const u8 *data, - unsigned int length, u8 *out) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - return __chksum_finup(&ctx->crc, data, length, out); -} - -static struct shash_alg alg = { - .digestsize = CRC_T10DIF_DIGEST_SIZE, - .init = chksum_init, - .update = chksum_update, - .final = chksum_final, - .finup = chksum_finup, - .digest = chksum_digest, - .descsize = sizeof(struct chksum_desc_ctx), - .base = { - .cra_name = "crct10dif", - .cra_driver_name = "crct10dif-generic", - .cra_priority = 100, - .cra_blocksize = CRC_T10DIF_BLOCK_SIZE, - .cra_module = THIS_MODULE, - } -}; - -static int __init crct10dif_mod_init(void) -{ - int ret; - - ret = crypto_register_shash(&alg); - return ret; -} - -static void __exit crct10dif_mod_fini(void) -{ - crypto_unregister_shash(&alg); -} - -module_init(crct10dif_mod_init); -module_exit(crct10dif_mod_fini); - -MODULE_AUTHOR("Tim Chen <tim.c.chen@linux.intel.com>"); -MODULE_DESCRIPTION("T10 DIF CRC calculation."); +MODULE_DESCRIPTION("T10 DIF CRC calculation common code"); MODULE_LICENSE("GPL"); |