On Wed, 8 Dec 2021 15:40:37 +1100 Herbert Xu wrote: > On Tue, Dec 07, 2021 at 11:32:52AM -0800, Jakub Kicinski wrote: > > Hi! > > > > The x86 AES crypto (gcm(aes)) requires 16B alignment which is hard to > > achieve in networking. Is there any reason for this? On any moderately > > recent Intel platform aligned and unaligned vmovdq should have the same > > performance (reportedly). > > There is no such thing as an alignment requirement. If an algorithm > specifies an alignment and you pass it a request which is unaligned, > the Crypto API will automatically align the data for you. > > So what is the actual problem here? By align you mean copy right? I'm trying to avoid the copy.
