Commit 28a220aa authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Herbert Xu

bluetooth: switch to AES library

The bluetooth code uses a bare AES cipher for the encryption operations.
Given that it carries out a set_key() operation right before every
encryption operation, this is clearly not a hot path, and so the use of
the cipher interface (which provides the best implementation available
on the system) is not really required.

In fact, when using a cipher like AES-NI or AES-CE, both the set_key()
and the encrypt() operations involve en/disabling preemption as well as
stacking and unstacking the SIMD context, and this is most certainly
not worth it for encrypting 16 bytes of data.

So let's switch to the new lightweight library interface instead.
Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 0a5dff98
......@@ -10,7 +10,8 @@ menuconfig BT
select CRC16
select CRYPTO
select CRYPTO_BLKCIPHER
select CRYPTO_AES
select CRYPTO_LIB_AES
imply CRYPTO_AES
select CRYPTO_CMAC
select CRYPTO_ECB
select CRYPTO_SHA256
......
This diff is collapsed.
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment