* Intel(R) 64 and IA-32 Architectures Software Developer's Manual
* Volume 2A: Instruction Set Reference, A-M
*
- * Copyright (c) 2008 Austin Zhang <austin_zhang@linux.intel.com>
- * Copyright (c) 2008 Kent Liu <kent.liu@intel.com>
+ * Copyright (C) 2008 Intel Corporation
+ * Authors: Austin Zhang <austin_zhang@linux.intel.com>
+ * Kent Liu <kent.liu@intel.com>
*
* This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <linux/init.h>
* If your algorithm starts with ~0, then XOR with ~0 before you set
* the seed.
*/
-static int crc32c_intel_setkey(struct crypto_ahash *hash, const u8 *key,
+static int crc32c_intel_setkey(struct crypto_shash *hash, const u8 *key,
unsigned int keylen)
{
- u32 *mctx = crypto_ahash_ctx(hash);
+ u32 *mctx = crypto_shash_ctx(hash);
if (keylen != sizeof(u32)) {
- crypto_ahash_set_flags(hash, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ crypto_shash_set_flags(hash, CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
}
*mctx = le32_to_cpup((__le32 *)key);
return 0;
}
-static int crc32c_intel_init(struct ahash_request *req)
+static int crc32c_intel_init(struct shash_desc *desc)
{
- u32 *mctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
- u32 *crcp = ahash_request_ctx(req);
+ u32 *mctx = crypto_shash_ctx(desc->tfm);
+ u32 *crcp = shash_desc_ctx(desc);
*crcp = *mctx;
return 0;
}
-static int crc32c_intel_update(struct ahash_request *req)
+static int crc32c_intel_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
{
- struct crypto_hash_walk walk;
- u32 *crcp = ahash_request_ctx(req);
- u32 crc = *crcp;
- int nbytes;
-
- for (nbytes = crypto_hash_walk_first(req, &walk); nbytes;
- nbytes = crypto_hash_walk_done(&walk, 0))
- crc = crc32c_intel_le_hw(crc, walk.data, nbytes);
+ u32 *crcp = shash_desc_ctx(desc);
- *crcp = crc;
+ *crcp = crc32c_intel_le_hw(*crcp, data, len);
return 0;
}
-static int crc32c_intel_final(struct ahash_request *req)
+static int __crc32c_intel_finup(u32 *crcp, const u8 *data, unsigned int len,
+ u8 *out)
{
- u32 *crcp = ahash_request_ctx(req);
-
- *(__le32 *)req->result = ~cpu_to_le32p(crcp);
+ *(__le32 *)out = ~cpu_to_le32(crc32c_intel_le_hw(*crcp, data, len));
return 0;
}
-static int crc32c_intel_digest(struct ahash_request *req)
+static int crc32c_intel_finup(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
{
- struct crypto_hash_walk walk;
- u32 *mctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
- u32 crc = *mctx;
- int nbytes;
+ return __crc32c_intel_finup(shash_desc_ctx(desc), data, len, out);
+}
- for (nbytes = crypto_hash_walk_first(req, &walk); nbytes;
- nbytes = crypto_hash_walk_done(&walk, 0))
- crc = crc32c_intel_le_hw(crc, walk.data, nbytes);
+static int crc32c_intel_final(struct shash_desc *desc, u8 *out)
+{
+ u32 *crcp = shash_desc_ctx(desc);
- *(__le32 *)req->result = ~cpu_to_le32(crc);
+ *(__le32 *)out = ~cpu_to_le32p(crcp);
return 0;
}
+static int crc32c_intel_digest(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ return __crc32c_intel_finup(crypto_shash_ctx(desc->tfm), data, len,
+ out);
+}
+
static int crc32c_intel_cra_init(struct crypto_tfm *tfm)
{
u32 *key = crypto_tfm_ctx(tfm);
*key = ~0;
- tfm->crt_ahash.reqsize = sizeof(u32);
-
return 0;
}
-static struct crypto_alg alg = {
- .cra_name = "crc32c",
- .cra_driver_name = "crc32c-intel",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_TYPE_AHASH,
- .cra_blocksize = CHKSUM_BLOCK_SIZE,
- .cra_alignmask = 3,
- .cra_ctxsize = sizeof(u32),
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(alg.cra_list),
- .cra_init = crc32c_intel_cra_init,
- .cra_type = &crypto_ahash_type,
- .cra_u = {
- .ahash = {
- .digestsize = CHKSUM_DIGEST_SIZE,
- .setkey = crc32c_intel_setkey,
- .init = crc32c_intel_init,
- .update = crc32c_intel_update,
- .final = crc32c_intel_final,
- .digest = crc32c_intel_digest,
- }
+static struct shash_alg alg = {
+ .setkey = crc32c_intel_setkey,
+ .init = crc32c_intel_init,
+ .update = crc32c_intel_update,
+ .final = crc32c_intel_final,
+ .finup = crc32c_intel_finup,
+ .digest = crc32c_intel_digest,
+ .descsize = sizeof(u32),
+ .digestsize = CHKSUM_DIGEST_SIZE,
+ .base = {
+ .cra_name = "crc32c",
+ .cra_driver_name = "crc32c-intel",
+ .cra_priority = 200,
+ .cra_blocksize = CHKSUM_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(u32),
+ .cra_module = THIS_MODULE,
+ .cra_init = crc32c_intel_cra_init,
}
};
static int __init crc32c_intel_mod_init(void)
{
if (cpu_has_xmm4_2)
- return crypto_register_alg(&alg);
+ return crypto_register_shash(&alg);
else
return -ENODEV;
}
static void __exit crc32c_intel_mod_fini(void)
{
- crypto_unregister_alg(&alg);
+ crypto_unregister_shash(&alg);
}
module_init(crc32c_intel_mod_init);
MODULE_ALIAS("crc32c");
MODULE_ALIAS("crc32c-intel");
-
git.openpandora.org / pandora-kernel.git / blobdiff