tree 018bc9513af4cb8d5bce210ca869c2a7c8d23a02
parent e2e34b0856463727292498d756308cba957fe477
author Dave Watson <davejwatson@fb.com> 1518630010 -0800
committer Herbert Xu <herbert@gondor.apana.org.au> 1519309009 +0800

crypto: aesni - Move HashKey computation from stack to gcm_context

HashKey computation only needs to happen once per scatter/gather operation,
save it between calls in gcm_context struct instead of on the stack.
Since the asm no longer stores anything on the stack, we can use
%rsp directly, and clean up the frame save/restore macros a bit.

Hashkeys actually only need to be calculated once per key and could
be moved to when set_key is called, however, the current glue code
falls back to generic aes code if fpu is disabled.

Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>