crypto: crc32 - remove "generic" from file and module names

Since crc32_generic.c and crc32c_generic.c now expose both the generic
and architecture-optimized implementations via the crypto_shash API,
rather than just the generic implementations as they originally did,
remove the "generic" part of the filenames and module names:

    crypto/crc32-generic.c => crypto/crc32.c
    crypto/crc32c-generic.c => crypto/crc32c.c
    crc32-generic.ko => crc32-cryptoapi.ko
    crc32c-generic.ko => crc32c-cryptoapi.ko

The reason for adding the -cryptoapi suffixes to the module names is to
avoid a module name collision with crc32.ko which is the library API.

We could instead rename the library module to libcrc32.ko.  However,
while lib/crypto/ uses that convention, the rest of lib/ doesn't.  Since
the library API is the primary API for CRC-32, I'd like to keep the
unsuffixed name for it and make the Crypto API modules use a suffix.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250428162458.29732-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>

1 files changed, 0 insertions, 222 deletions

diff --git a/crypto/crc32c_generic.c b/crypto/crc32c_generic.c
deleted file mode 100644
index b1a36d32dc50..000000000000
--- a/crypto/crc32c_generic.c
+++ /dev/null
@@ -1,222 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Cryptographic API.
- *
- * CRC32C chksum
- *
- *@Article{castagnoli-crc,
- * author =       { Guy Castagnoli and Stefan Braeuer and Martin Herrman},
- * title =        {{Optimization of Cyclic Redundancy-Check Codes with 24
- *                 and 32 Parity Bits}},
- * journal =      IEEE Transactions on Communication,
- * year =         {1993},
- * volume =       {41},
- * number =       {6},
- * pages =        {},
- * month =        {June},
- *}
- * Used by the iSCSI driver, possibly others, and derived from
- * the iscsi-crc.c module of the linux-iscsi driver at
- * http://linux-iscsi.sourceforge.net.
- *
- * Following the example of lib/crc32, this function is intended to be
- * flexible and useful for all users.  Modules that currently have their
- * own crc32c, but hopefully may be able to use this one are:
- *  net/sctp (please add all your doco to here if you change to
- *            use this one!)
- *  <endoflist>
- *
- * Copyright (c) 2004 Cisco Systems, Inc.
- * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
- */
-
-#include <linux/unaligned.h>
-#include <crypto/internal/hash.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/crc32.h>
-
-#define CHKSUM_BLOCK_SIZE	1
-#define CHKSUM_DIGEST_SIZE	4
-
-struct chksum_ctx {
-	u32 key;
-};
-
-struct chksum_desc_ctx {
-	u32 crc;
-};
-
-/*
- * Steps through buffer one byte at a time, calculates reflected
- * crc using table.
- */
-
-static int chksum_init(struct shash_desc *desc)
-{
-	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);
-	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-	ctx->crc = mctx->key;
-
-	return 0;
-}
-
-/*
- * Setting the seed allows arbitrary accumulators and flexible XOR policy
- * If your algorithm starts with ~0, then XOR with ~0 before you set
- * the seed.
- */
-static int chksum_setkey(struct crypto_shash *tfm, const u8 *key,
-			 unsigned int keylen)
-{
-	struct chksum_ctx *mctx = crypto_shash_ctx(tfm);
-
-	if (keylen != sizeof(mctx->key))
-		return -EINVAL;
-	mctx->key = get_unaligned_le32(key);
-	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 = crc32c_base(ctx->crc, data, length);
-	return 0;
-}
-
-static int chksum_update_arch(struct shash_desc *desc, const u8 *data,
-			      unsigned int length)
-{
-	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-	ctx->crc = crc32c(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);
-
-	put_unaligned_le32(~ctx->crc, out);
-	return 0;
-}
-
-static int __chksum_finup(u32 *crcp, const u8 *data, unsigned int len, u8 *out)
-{
-	put_unaligned_le32(~crc32c_base(*crcp, data, len), out);
-	return 0;
-}
-
-static int __chksum_finup_arch(u32 *crcp, const u8 *data, unsigned int len,
-			       u8 *out)
-{
-	put_unaligned_le32(~crc32c(*crcp, data, len), out);
-	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_finup_arch(struct shash_desc *desc, const u8 *data,
-			     unsigned int len, u8 *out)
-{
-	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-	return __chksum_finup_arch(&ctx->crc, data, len, out);
-}
-
-static int chksum_digest(struct shash_desc *desc, const u8 *data,
-			 unsigned int length, u8 *out)
-{
-	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);
-
-	return __chksum_finup(&mctx->key, data, length, out);
-}
-
-static int chksum_digest_arch(struct shash_desc *desc, const u8 *data,
-			      unsigned int length, u8 *out)
-{
-	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);
-
-	return __chksum_finup_arch(&mctx->key, data, length, out);
-}
-
-static int crc32c_cra_init(struct crypto_tfm *tfm)
-{
-	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
-	mctx->key = ~0;
-	return 0;
-}
-
-static struct shash_alg algs[] = {{
-	.digestsize		= CHKSUM_DIGEST_SIZE,
-	.setkey			= chksum_setkey,
-	.init			= chksum_init,
-	.update			= chksum_update,
-	.final			= chksum_final,
-	.finup			= chksum_finup,
-	.digest			= chksum_digest,
-	.descsize		= sizeof(struct chksum_desc_ctx),
-
-	.base.cra_name		= "crc32c",
-	.base.cra_driver_name	= "crc32c-generic",
-	.base.cra_priority	= 100,
-	.base.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,
-	.base.cra_blocksize	= CHKSUM_BLOCK_SIZE,
-	.base.cra_ctxsize	= sizeof(struct chksum_ctx),
-	.base.cra_module	= THIS_MODULE,
-	.base.cra_init		= crc32c_cra_init,
-}, {
-	.digestsize		= CHKSUM_DIGEST_SIZE,
-	.setkey			= chksum_setkey,
-	.init			= chksum_init,
-	.update			= chksum_update_arch,
-	.final			= chksum_final,
-	.finup			= chksum_finup_arch,
-	.digest			= chksum_digest_arch,
-	.descsize		= sizeof(struct chksum_desc_ctx),
-
-	.base.cra_name		= "crc32c",
-	.base.cra_driver_name	= "crc32c-" __stringify(ARCH),
-	.base.cra_priority	= 150,
-	.base.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,
-	.base.cra_blocksize	= CHKSUM_BLOCK_SIZE,
-	.base.cra_ctxsize	= sizeof(struct chksum_ctx),
-	.base.cra_module	= THIS_MODULE,
-	.base.cra_init		= crc32c_cra_init,
-}};
-
-static int num_algs;
-
-static int __init crc32c_mod_init(void)
-{
-	/* register the arch flavor only if it differs from the generic one */
-	num_algs = 1 + ((crc32_optimizations() & CRC32C_OPTIMIZATION) != 0);
-
-	return crypto_register_shashes(algs, num_algs);
-}
-
-static void __exit crc32c_mod_fini(void)
-{
-	crypto_unregister_shashes(algs, num_algs);
-}
-
-subsys_initcall(crc32c_mod_init);
-module_exit(crc32c_mod_fini);
-
-MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
-MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations wrapper for lib/crc32c");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CRYPTO("crc32c");
-MODULE_ALIAS_CRYPTO("crc32c-generic");