From: Eric Biggers <ebiggers@google.com>
Date: Mon, 2 Dec 2024 01:20:55 +0000 (-0800)
Subject: powerpc/crc: delete obsolete crc-vpmsum_test.c
X-Git-Tag: v6.14-rc1~139^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db1fda2d4cd44234a77e134b79a7f03fdf3d8c8c;p=thirdparty%2Flinux.git

powerpc/crc: delete obsolete crc-vpmsum_test.c

Delete crc-vpmsum_test.c, since its functionality is now covered by the
new crc_kunit.c as well as the crypto subsystem's fuzz tests.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Vinicius Peixoto <vpeixoto@lkcamp.dev>
Link: https://lore.kernel.org/r/20241202012056.209768-12-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
---

diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index 15101f5c32381..465eb96c755e0 100644
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -389,7 +389,6 @@ CONFIG_CRYPTO_MICHAEL_MIC=m
 CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_LZO=m
-CONFIG_CRYPTO_VPMSUM_TESTER=m
 CONFIG_CRYPTO_MD5_PPC=m
 CONFIG_CRYPTO_SHA1_PPC=m
 CONFIG_CRYPTO_AES_GCM_P10=m
diff --git a/arch/powerpc/crypto/Kconfig b/arch/powerpc/crypto/Kconfig
index 45376f1a43bdb..5b315e9756b3f 100644
--- a/arch/powerpc/crypto/Kconfig
+++ b/arch/powerpc/crypto/Kconfig
@@ -13,15 +13,6 @@ config CRYPTO_CURVE25519_PPC64
 	  Architecture: PowerPC64
 	  - Little-endian
 
-config CRYPTO_VPMSUM_TESTER
-	tristate "CRC32c and CRC32T10DIF hardware acceleration tester"
-	depends on CRYPTO_CRC32C && CRC32_ARCH
-	depends on CRYPTO_CRCT10DIF && CRC_T10DIF_ARCH
-	help
-	  Stress test for CRC32c and CRCT10DIF algorithms implemented with
-	  powerpc64 AltiVec extensions (POWER8 vpmsum instructions).
-	  Unless you are testing these algorithms, you don't need this.
-
 config CRYPTO_MD5_PPC
 	tristate "Digests: MD5"
 	depends on PPC
diff --git a/arch/powerpc/crypto/Makefile b/arch/powerpc/crypto/Makefile
index d2238ac7e52ce..9b38f4a7bc152 100644
--- a/arch/powerpc/crypto/Makefile
+++ b/arch/powerpc/crypto/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_CRYPTO_MD5_PPC) += md5-ppc.o
 obj-$(CONFIG_CRYPTO_SHA1_PPC) += sha1-powerpc.o
 obj-$(CONFIG_CRYPTO_SHA1_PPC_SPE) += sha1-ppc-spe.o
 obj-$(CONFIG_CRYPTO_SHA256_PPC_SPE) += sha256-ppc-spe.o
-obj-$(CONFIG_CRYPTO_VPMSUM_TESTER) += crc-vpmsum_test.o
 obj-$(CONFIG_CRYPTO_AES_GCM_P10) += aes-gcm-p10-crypto.o
 obj-$(CONFIG_CRYPTO_CHACHA20_P10) += chacha-p10-crypto.o
 obj-$(CONFIG_CRYPTO_POLY1305_P10) += poly1305-p10-crypto.o
diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c
deleted file mode 100644
index c61a874a3a5c6..0000000000000
--- a/arch/powerpc/crypto/crc-vpmsum_test.c
+++ /dev/null
@@ -1,133 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * CRC vpmsum tester
- * Copyright 2017 Daniel Axtens, IBM Corporation.
- */
-
-#include <linux/crc-t10dif.h>
-#include <linux/crc32.h>
-#include <crypto/internal/hash.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/random.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/cpufeature.h>
-#include <asm/switch_to.h>
-
-static unsigned long iterations = 10000;
-
-#define MAX_CRC_LENGTH 65535
-
-
-static int __init crc_test_init(void)
-{
-	u16 crc16 = 0, verify16 = 0;
-	__le32 verify32le = 0;
-	unsigned char *data;
-	u32 verify32 = 0;
-	unsigned long i;
-	__le32 crc32;
-	int ret;
-
-	struct crypto_shash *crct10dif_tfm;
-	struct crypto_shash *crc32c_tfm;
-
-	if (!cpu_has_feature(CPU_FTR_ARCH_207S))
-		return -ENODEV;
-
-	data = kmalloc(MAX_CRC_LENGTH, GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	crct10dif_tfm = crypto_alloc_shash("crct10dif", 0, 0);
-
-	if (IS_ERR(crct10dif_tfm)) {
-		pr_err("Error allocating crc-t10dif\n");
-		goto free_buf;
-	}
-
-	crc32c_tfm = crypto_alloc_shash("crc32c", 0, 0);
-
-	if (IS_ERR(crc32c_tfm)) {
-		pr_err("Error allocating crc32c\n");
-		goto free_16;
-	}
-
-	do {
-		SHASH_DESC_ON_STACK(crct10dif_shash, crct10dif_tfm);
-		SHASH_DESC_ON_STACK(crc32c_shash, crc32c_tfm);
-
-		crct10dif_shash->tfm = crct10dif_tfm;
-		ret = crypto_shash_init(crct10dif_shash);
-
-		if (ret) {
-			pr_err("Error initing crc-t10dif\n");
-			goto free_32;
-		}
-
-
-		crc32c_shash->tfm = crc32c_tfm;
-		ret = crypto_shash_init(crc32c_shash);
-
-		if (ret) {
-			pr_err("Error initing crc32c\n");
-			goto free_32;
-		}
-
-		pr_info("crc-vpmsum_test begins, %lu iterations\n", iterations);
-		for (i=0; i<iterations; i++) {
-			size_t offset = get_random_u32_below(16);
-			size_t len = get_random_u32_below(MAX_CRC_LENGTH);
-
-			if (len <= offset)
-				continue;
-			get_random_bytes(data, len);
-			len -= offset;
-
-			crypto_shash_update(crct10dif_shash, data+offset, len);
-			crypto_shash_final(crct10dif_shash, (u8 *)(&crc16));
-			verify16 = crc_t10dif_generic(verify16, data+offset, len);
-
-
-			if (crc16 != verify16) {
-				pr_err("FAILURE in CRC16: got 0x%04x expected 0x%04x (len %lu)\n",
-				       crc16, verify16, len);
-				break;
-			}
-
-			crypto_shash_update(crc32c_shash, data+offset, len);
-			crypto_shash_final(crc32c_shash, (u8 *)(&crc32));
-			verify32 = le32_to_cpu(verify32le);
-		        verify32le = ~cpu_to_le32(__crc32c_le(~verify32, data+offset, len));
-			if (crc32 != verify32le) {
-				pr_err("FAILURE in CRC32: got 0x%08x expected 0x%08x (len %lu)\n",
-				       crc32, verify32, len);
-				break;
-			}
-		cond_resched();
-		}
-		pr_info("crc-vpmsum_test done, completed %lu iterations\n", i);
-	} while (0);
-
-free_32:
-	crypto_free_shash(crc32c_tfm);
-
-free_16:
-	crypto_free_shash(crct10dif_tfm);
-
-free_buf:
-	kfree(data);
-
-	return 0;
-}
-
-static void __exit crc_test_exit(void) {}
-
-module_init(crc_test_init);
-module_exit(crc_test_exit);
-module_param(iterations, long, 0400);
-
-MODULE_AUTHOR("Daniel Axtens <dja@axtens.net>");
-MODULE_DESCRIPTION("Vector polynomial multiply-sum CRC tester");
-MODULE_LICENSE("GPL");