2023-05-17 18:01 UTC+0200 ~ Larysa Zaremba <larysa.zaremba@xxxxxxxxx> > Add ability to specify a network interface used to resolve > XDP Hints kfuncs when loading program through bpftool. > > Usage: > bpftool prog load [...] xdpmeta_dev <ifname> > > Writing just 'dev <ifname>' instead of 'xdpmeta_dev' is a very probable > mistake that results in not very descriptive errors, > so 'bpftool prog load [...] dev <ifname>' syntax becomes deprecated, > followed by 'bpftool map create [...] dev <ifname>' for consistency. > > Now, to offload program, execute: > bpftool prog load [...] offload_dev <ifname> > > To offload map: > bpftool map create [...] offload_dev <ifname> > > 'dev <ifname>' still performs offloading in the commands above, but now > triggers a warning and is excluded from bash completion. > > 'xdpmeta_dev' and 'offload_dev' are mutually exclusive options, because > 'xdpmeta_dev' basically makes a program device-bound without loading it > onto the said device. For now, offloaded programs cannot use XDP hints [0], > but if this changes, using 'offload_dev <ifname>' should cover this case. > > [0] https://lore.kernel.org/bpf/a5a636cc-5b03-686f-4be0-000383b05cfc@xxxxxxxxx > > Signed-off-by: Larysa Zaremba <larysa.zaremba@xxxxxxxxx> Reviewed-by: Quentin Monnet <quentin@xxxxxxxxxxxxx> Thanks!
