On Tue, Dec 01, 2020 at 11:12:32PM +0100, Ard Biesheuvel wrote: > > What do you mean by just one direction? Ben just confirmed a The TX direction generally executes in process context, which would benefit from an accelerated sync implementation. The RX side on the other hand is always in softirq context. > substantial speedup for his use case, which requires the use of > software encryption even on hardware that could support doing it in > hardware, and that software encryption currently only supports the > synchronous interface. The problem is that the degradation would come at the worst time, when the system is loaded. IOW when you get an interrupt during your TX path and get RX traffic that's when you'll take the fallback path. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
