On Sun, 16 Feb 2025 10:27:02 +0800 Herbert Xu wrote: > On Sat, Feb 15, 2025 at 09:04:12AM -0800, Jakub Kicinski wrote: > > Can confirm, FWIW. I don't know as much about IPsec, but for TLS > > lightweight SW-only crypto would be ideal. > > Please note that while CPU-only crypto is the best for networking, > it actually operates in asynchronous mode on x86. This is because > RX occurs in softirq context, which may not be able to use SIMD on > x86. Yes, that's true for tunnels and for IPsec. TLS does crypto in sendmsg/recvmsg, process context.