On 2019-12-19 23:29, Alex Forster wrote:
I though af_xdp landed after jmp32 ?
They were indeed pretty close together, but AF_XDP became usable in
late 2018 with either 4.18 or 4.19. JMP32 landed in early 2019 with
5.1.
Correct, but is anyone really using AF_XDP pre-5.1?
The rationale for doing JMP32:
https://lore.kernel.org/bpf/87v9sip0i8.fsf@xxxxxxx/
I think going forward, a route where different AF_XDP programs is loaded
based on what currently running kernel supports. "Every s^Hcycle is
sacred", and we're actually paying for the extra checks.
Then again, failing to load is still pretty bad. :-) Thanks for fixing this.
Acked-by: Björn Töpel <bjorn.topel@xxxxxxxxx>
Alex Forster
