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crypto: x86/aesni - Refactor the common address alignment code

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The address alignment code has been duplicated for each mode. Instead
of duplicating the same code, refactor the alignment code and simplify
the alignment helpers.

Suggested-by: Eric Biggers <ebiggers@kernel.org>
Link: https://lore.kernel.org/all/20230526065414.GB875@sol.localdomain/
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Cc: linux-crypto@vger.kernel.org
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Chang S. Bae 2023-09-28 00:25:06 -07:00 committed by Herbert Xu
parent a1e452026e
commit 62496a2dea
1 changed files with 10 additions and 16 deletions
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26
arch/x86/crypto/aesni-intel_glue.c
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@ -80,6 +80,13 @@ struct gcm_context_data {
u8 hash_keys[GCM_BLOCK_LEN * 16];
};
static inline void *aes_align_addr(void *addr)
{
if (crypto_tfm_ctx_alignment() >= AESNI_ALIGN)
return addr;
return PTR_ALIGN(addr, AESNI_ALIGN);
}
asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
unsigned int key_len);
asmlinkage void aesni_enc(const void *ctx, u8 *out, const u8 *in);
@ -201,32 +208,19 @@ static __ro_after_init DEFINE_STATIC_KEY_FALSE(gcm_use_avx2);
static inline struct
aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm)
{
unsigned long align = AESNI_ALIGN;
if (align <= crypto_tfm_ctx_alignment())
align = 1;
return PTR_ALIGN(crypto_aead_ctx(tfm), align);
return aes_align_addr(crypto_aead_ctx(tfm));
}
static inline struct
generic_gcmaes_ctx *generic_gcmaes_ctx_get(struct crypto_aead *tfm)
{
unsigned long align = AESNI_ALIGN;
if (align <= crypto_tfm_ctx_alignment())
align = 1;
return PTR_ALIGN(crypto_aead_ctx(tfm), align);
return aes_align_addr(crypto_aead_ctx(tfm));
}
#endif
static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx)
{
unsigned long addr = (unsigned long)raw_ctx;
unsigned long align = AESNI_ALIGN;
if (align <= crypto_tfm_ctx_alignment())
align = 1;
return (struct crypto_aes_ctx *)ALIGN(addr, align);
return aes_align_addr(raw_ctx);
}
static int aes_set_key_common(struct crypto_aes_ctx *ctx,