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crypto: x86 - convert to use crypto_simd_usable() 

Replace all calls to irq_fpu_usable() in the x86 crypto code with
crypto_simd_usable(), in order to allow testing the no-SIMD code paths.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2019-03-12 22:12:48 -07:00 committed by Herbert Xu
parent b55e1a3954
commit f2abe0d72b
12 changed files with 44 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/crypto/aesni-intel_glue.c
View File

@ -30,8 +30,8 @@
#include <crypto/gcm.h>
#include <crypto/xts.h>
#include <asm/cpu_device_id.h>
#include <asm/fpu/api.h>
#include <asm/crypto/aes.h>
#include <asm/simd.h>
#include <crypto/scatterwalk.h>
#include <crypto/internal/aead.h>
#include <crypto/internal/simd.h>
@ -332,7 +332,7 @@ static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx,
return -EINVAL;
}
if (!irq_fpu_usable())
if (!crypto_simd_usable())
err = crypto_aes_expand_key(ctx, in_key, key_len);
else {
kernel_fpu_begin();
@ -353,7 +353,7 @@ static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm));
if (!irq_fpu_usable())
if (!crypto_simd_usable())
crypto_aes_encrypt_x86(ctx, dst, src);
else {
kernel_fpu_begin();
@ -366,7 +366,7 @@ static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm));
if (!irq_fpu_usable())
if (!crypto_simd_usable())
crypto_aes_decrypt_x86(ctx, dst, src);
else {
kernel_fpu_begin();

6
arch/x86/crypto/chacha_glue.c
View File

@ -12,10 +12,10 @@
#include <crypto/algapi.h>
#include <crypto/chacha.h>
#include <crypto/internal/simd.h>
#include <crypto/internal/skcipher.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/fpu/api.h>
#include <asm/simd.h>
#define CHACHA_STATE_ALIGN 16
@ -170,7 +170,7 @@ static int chacha_simd(struct skcipher_request *req)
struct skcipher_walk walk;
int err;
if (req->cryptlen <= CHACHA_BLOCK_SIZE || !irq_fpu_usable())
if (req->cryptlen <= CHACHA_BLOCK_SIZE || !crypto_simd_usable())
return crypto_chacha_crypt(req);
err = skcipher_walk_virt(&walk, req, true);
@ -193,7 +193,7 @@ static int xchacha_simd(struct skcipher_request *req)
u8 real_iv[16];
int err;
if (req->cryptlen <= CHACHA_BLOCK_SIZE || !irq_fpu_usable())
if (req->cryptlen <= CHACHA_BLOCK_SIZE || !crypto_simd_usable())
return crypto_xchacha_crypt(req);
err = skcipher_walk_virt(&walk, req, true);

5
arch/x86/crypto/crc32-pclmul_glue.c
View File

@ -32,10 +32,11 @@
#include <linux/kernel.h>
#include <linux/crc32.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <asm/cpufeatures.h>
#include <asm/cpu_device_id.h>
#include <asm/fpu/api.h>
#include <asm/simd.h>
#define CHKSUM_BLOCK_SIZE 1
#define CHKSUM_DIGEST_SIZE 4
@ -54,7 +55,7 @@ static u32 __attribute__((pure))
unsigned int iremainder;
unsigned int prealign;
if (len < PCLMUL_MIN_LEN + SCALE_F_MASK || !irq_fpu_usable())
if (len < PCLMUL_MIN_LEN + SCALE_F_MASK || !crypto_simd_usable())
return crc32_le(crc, p, len);
if ((long)p & SCALE_F_MASK) {

7
arch/x86/crypto/crc32c-intel_glue.c
View File

@ -29,10 +29,11 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <asm/cpufeatures.h>
#include <asm/cpu_device_id.h>
#include <asm/fpu/internal.h>
#include <asm/simd.h>
#define CHKSUM_BLOCK_SIZE 1
#define CHKSUM_DIGEST_SIZE 4
@ -177,7 +178,7 @@ static int crc32c_pcl_intel_update(struct shash_desc *desc, const u8 *data,
* use faster PCL version if datasize is large enough to
* overcome kernel fpu state save/restore overhead
*/
if (len >= CRC32C_PCL_BREAKEVEN && irq_fpu_usable()) {
if (len >= CRC32C_PCL_BREAKEVEN && crypto_simd_usable()) {
kernel_fpu_begin();
*crcp = crc_pcl(data, len, *crcp);
kernel_fpu_end();
@ -189,7 +190,7 @@ static int crc32c_pcl_intel_update(struct shash_desc *desc, const u8 *data,
static int __crc32c_pcl_intel_finup(u32 *crcp, const u8 *data, unsigned int len,
u8 *out)
{
if (len >= CRC32C_PCL_BREAKEVEN && irq_fpu_usable()) {
if (len >= CRC32C_PCL_BREAKEVEN && crypto_simd_usable()) {
kernel_fpu_begin();
*(__le32 *)out = ~cpu_to_le32(crc_pcl(data, len, *crcp));
kernel_fpu_end();

7
arch/x86/crypto/crct10dif-pclmul_glue.c
View File

@ -26,12 +26,13 @@
#include <linux/module.h>
#include <linux/crc-t10dif.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <asm/fpu/api.h>
#include <asm/cpufeatures.h>
#include <asm/cpu_device_id.h>
#include <asm/simd.h>
asmlinkage u16 crc_t10dif_pcl(u16 init_crc, const u8 *buf, size_t len);
@ -53,7 +54,7 @@ static int chksum_update(struct shash_desc *desc, const u8 *data,
{
struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
if (length >= 16 && irq_fpu_usable()) {
if (length >= 16 && crypto_simd_usable()) {
kernel_fpu_begin();
ctx->crc = crc_t10dif_pcl(ctx->crc, data, length);
kernel_fpu_end();
@ -73,7 +74,7 @@ static int chksum_final(struct shash_desc *desc, u8 *out)
static int __chksum_finup(__u16 *crcp, const u8 *data, unsigned int len,
u8 *out)
{
if (len >= 16 && irq_fpu_usable()) {
if (len >= 16 && crypto_simd_usable()) {
kernel_fpu_begin();
*(__u16 *)out = crc_t10dif_pcl(*crcp, data, len);
kernel_fpu_end();

9
arch/x86/crypto/ghash-clmulni-intel_glue.c
View File

@ -19,8 +19,9 @@
#include <crypto/cryptd.h>
#include <crypto/gf128mul.h>
#include <crypto/internal/hash.h>
#include <asm/fpu/api.h>
#include <crypto/internal/simd.h>
#include <asm/cpu_device_id.h>
#include <asm/simd.h>
#define GHASH_BLOCK_SIZE 16
#define GHASH_DIGEST_SIZE 16
@ -182,7 +183,7 @@ static int ghash_async_update(struct ahash_request *req)
struct ghash_async_ctx *ctx = crypto_ahash_ctx(tfm);
struct cryptd_ahash *cryptd_tfm = ctx->cryptd_tfm;
if (!irq_fpu_usable() ||
if (!crypto_simd_usable() ||
(in_atomic() && cryptd_ahash_queued(cryptd_tfm))) {
memcpy(cryptd_req, req, sizeof(*req));
ahash_request_set_tfm(cryptd_req, &cryptd_tfm->base);
@ -200,7 +201,7 @@ static int ghash_async_final(struct ahash_request *req)
struct ghash_async_ctx *ctx = crypto_ahash_ctx(tfm);
struct cryptd_ahash *cryptd_tfm = ctx->cryptd_tfm;
if (!irq_fpu_usable() ||
if (!crypto_simd_usable() ||
(in_atomic() && cryptd_ahash_queued(cryptd_tfm))) {
memcpy(cryptd_req, req, sizeof(*req));
ahash_request_set_tfm(cryptd_req, &cryptd_tfm->base);
@ -241,7 +242,7 @@ static int ghash_async_digest(struct ahash_request *req)
struct ahash_request *cryptd_req = ahash_request_ctx(req);
struct cryptd_ahash *cryptd_tfm = ctx->cryptd_tfm;
if (!irq_fpu_usable() ||
if (!crypto_simd_usable() ||
(in_atomic() && cryptd_ahash_queued(cryptd_tfm))) {
memcpy(cryptd_req, req, sizeof(*req));
ahash_request_set_tfm(cryptd_req, &cryptd_tfm->base);

5
arch/x86/crypto/nhpoly1305-avx2-glue.c
View File

@ -7,9 +7,10 @@
*/
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <crypto/nhpoly1305.h>
#include <linux/module.h>
#include <asm/fpu/api.h>
#include <asm/simd.h>
asmlinkage void nh_avx2(const u32 *key, const u8 *message, size_t message_len,
u8 hash[NH_HASH_BYTES]);
@ -24,7 +25,7 @@ static void _nh_avx2(const u32 *key, const u8 *message, size_t message_len,
static int nhpoly1305_avx2_update(struct shash_desc *desc,
const u8 *src, unsigned int srclen)
{
if (srclen < 64 || !irq_fpu_usable())
if (srclen < 64 || !crypto_simd_usable())
return crypto_nhpoly1305_update(desc, src, srclen);
do {

5
arch/x86/crypto/nhpoly1305-sse2-glue.c
View File

@ -7,9 +7,10 @@
*/
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <crypto/nhpoly1305.h>
#include <linux/module.h>
#include <asm/fpu/api.h>
#include <asm/simd.h>
asmlinkage void nh_sse2(const u32 *key, const u8 *message, size_t message_len,
u8 hash[NH_HASH_BYTES]);
@ -24,7 +25,7 @@ static void _nh_sse2(const u32 *key, const u8 *message, size_t message_len,
static int nhpoly1305_sse2_update(struct shash_desc *desc,
const u8 *src, unsigned int srclen)
{
if (srclen < 64 || !irq_fpu_usable())
if (srclen < 64 || !crypto_simd_usable())
return crypto_nhpoly1305_update(desc, src, srclen);
do {

4
arch/x86/crypto/poly1305_glue.c
View File

@ -11,11 +11,11 @@
#include <crypto/algapi.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <crypto/poly1305.h>
#include <linux/crypto.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/fpu/api.h>
#include <asm/simd.h>
struct poly1305_simd_desc_ctx {
@ -126,7 +126,7 @@ static int poly1305_simd_update(struct shash_desc *desc,
unsigned int bytes;
/* kernel_fpu_begin/end is costly, use fallback for small updates */
if (srclen <= 288 || !may_use_simd())
if (srclen <= 288 || !crypto_simd_usable())
return crypto_poly1305_update(desc, src, srclen);
kernel_fpu_begin();

7
arch/x86/crypto/sha1_ssse3_glue.c
View File

@ -22,6 +22,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
@ -29,7 +30,7 @@
#include <linux/types.h>
#include <crypto/sha.h>
#include <crypto/sha1_base.h>
#include <asm/fpu/api.h>
#include <asm/simd.h>
typedef void (sha1_transform_fn)(u32 *digest, const char *data,
unsigned int rounds);
@ -39,7 +40,7 @@ static int sha1_update(struct shash_desc *desc, const u8 *data,
{
struct sha1_state *sctx = shash_desc_ctx(desc);
if (!irq_fpu_usable() ||
if (!crypto_simd_usable() ||
(sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
return crypto_sha1_update(desc, data, len);
@ -57,7 +58,7 @@ static int sha1_update(struct shash_desc *desc, const u8 *data,
static int sha1_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out, sha1_transform_fn *sha1_xform)
{
if (!irq_fpu_usable())
if (!crypto_simd_usable())
return crypto_sha1_finup(desc, data, len, out);
kernel_fpu_begin();

7
arch/x86/crypto/sha256_ssse3_glue.c
View File

@ -30,6 +30,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
@ -37,8 +38,8 @@
#include <linux/types.h>
#include <crypto/sha.h>
#include <crypto/sha256_base.h>
#include <asm/fpu/api.h>
#include <linux/string.h>
#include <asm/simd.h>
asmlinkage void sha256_transform_ssse3(u32 *digest, const char *data,
u64 rounds);
@ -49,7 +50,7 @@ static int sha256_update(struct shash_desc *desc, const u8 *data,
{
struct sha256_state *sctx = shash_desc_ctx(desc);
if (!irq_fpu_usable() ||
if (!crypto_simd_usable() ||
(sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
return crypto_sha256_update(desc, data, len);
@ -67,7 +68,7 @@ static int sha256_update(struct shash_desc *desc, const u8 *data,
static int sha256_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out, sha256_transform_fn *sha256_xform)
{
if (!irq_fpu_usable())
if (!crypto_simd_usable())
return crypto_sha256_finup(desc, data, len, out);
kernel_fpu_begin();

10
arch/x86/crypto/sha512_ssse3_glue.c
View File

@ -28,16 +28,16 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/cryptohash.h>
#include <linux/string.h>
#include <linux/types.h>
#include <crypto/sha.h>
#include <crypto/sha512_base.h>
#include <asm/fpu/api.h>
#include <linux/string.h>
#include <asm/simd.h>
asmlinkage void sha512_transform_ssse3(u64 *digest, const char *data,
u64 rounds);
@ -49,7 +49,7 @@ static int sha512_update(struct shash_desc *desc, const u8 *data,
{
struct sha512_state *sctx = shash_desc_ctx(desc);
if (!irq_fpu_usable() ||
if (!crypto_simd_usable() ||
(sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE)
return crypto_sha512_update(desc, data, len);
@ -67,7 +67,7 @@ static int sha512_update(struct shash_desc *desc, const u8 *data,
static int sha512_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out, sha512_transform_fn *sha512_xform)
{
if (!irq_fpu_usable())
if (!crypto_simd_usable())
return crypto_sha512_finup(desc, data, len, out);
kernel_fpu_begin();