Now that kernel mode NEON is guaranteed to be available both in process
and in softirq context, we no longer have a need for the SIMD helper or
for non-SIMD fallbacks, given that the skcipher API is not supported in
any other context anyway. So drop this code.
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
---
arch/arm/crypto/aes-ce-glue.c | 84 +-------------------
1 file changed, 3 insertions(+), 81 deletions(-)
diff --git a/arch/arm/crypto/aes-ce-glue.c b/arch/arm/crypto/aes-ce-glue.c
index b668c97663ec..bcb2b6695241 100644
--- a/arch/arm/crypto/aes-ce-glue.c
+++ b/arch/arm/crypto/aes-ce-glue.c
@@ -7,11 +7,9 @@
#include <asm/hwcap.h>
#include <asm/neon.h>
-#include <asm/simd.h>
#include <asm/unaligned.h>
#include <crypto/aes.h>
#include <crypto/ctr.h>
-#include <crypto/internal/simd.h>
#include <crypto/internal/skcipher.h>
#include <crypto/scatterwalk.h>
#include <linux/cpufeature.h>
@@ -418,29 +416,6 @@ static int ctr_encrypt(struct skcipher_request *req)
return err;
}
-static void ctr_encrypt_one(struct crypto_skcipher *tfm, const u8 *src, u8 *dst)
-{
- struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
- unsigned long flags;
-
- /*
- * Temporarily disable interrupts to avoid races where
- * cachelines are evicted when the CPU is interrupted
- * to do something else.
- */
- local_irq_save(flags);
- aes_encrypt(ctx, dst, src);
- local_irq_restore(flags);
-}
-
-static int ctr_encrypt_sync(struct skcipher_request *req)
-{
- if (!crypto_simd_usable())
- return crypto_ctr_encrypt_walk(req, ctr_encrypt_one);
-
- return ctr_encrypt(req);
-}
-
static int xts_encrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
@@ -647,25 +622,9 @@ static struct skcipher_alg aes_algs[] = { {
.encrypt = ctr_encrypt,
.decrypt = ctr_encrypt,
}, {
- .base.cra_name = "ctr(aes)",
- .base.cra_driver_name = "ctr-aes-ce-sync",
- .base.cra_priority = 300 - 1,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct crypto_aes_ctx),
- .base.cra_module = THIS_MODULE,
-
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .chunksize = AES_BLOCK_SIZE,
- .setkey = ce_aes_setkey,
- .encrypt = ctr_encrypt_sync,
- .decrypt = ctr_encrypt_sync,
-}, {
- .base.cra_name = "__xts(aes)",
- .base.cra_driver_name = "__xts-aes-ce",
+ .base.cra_name = "xts(aes)",
+ .base.cra_driver_name = "xts-aes-ce",
.base.cra_priority = 300,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = AES_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct crypto_aes_xts_ctx),
.base.cra_module = THIS_MODULE,
@@ -679,51 +638,14 @@ static struct skcipher_alg aes_algs[] = { {
.decrypt = xts_decrypt,
} };
-static struct simd_skcipher_alg *aes_simd_algs[ARRAY_SIZE(aes_algs)];
-
static void aes_exit(void)
{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(aes_simd_algs) && aes_simd_algs[i]; i++)
- simd_skcipher_free(aes_simd_algs[i]);
-
crypto_unregister_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
}
static int __init aes_init(void)
{
- struct simd_skcipher_alg *simd;
- const char *basename;
- const char *algname;
- const char *drvname;
- int err;
- int i;
-
- err = crypto_register_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
- if (err)
- return err;
-
- for (i = 0; i < ARRAY_SIZE(aes_algs); i++) {
- if (!(aes_algs[i].base.cra_flags & CRYPTO_ALG_INTERNAL))
- continue;
-
- algname = aes_algs[i].base.cra_name + 2;
- drvname = aes_algs[i].base.cra_driver_name + 2;
- basename = aes_algs[i].base.cra_driver_name;
- simd = simd_skcipher_create_compat(algname, drvname, basename);
- err = PTR_ERR(simd);
- if (IS_ERR(simd))
- goto unregister_simds;
-
- aes_simd_algs[i] = simd;
- }
-
- return 0;
-
-unregister_simds:
- aes_exit();
- return err;
+ return crypto_register_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
}
module_cpu_feature_match(AES, aes_init);
--
2.17.1
