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f46392ee3d
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@linux.dev Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20230517160103.1088185-1-larysa.zaremba@intel.com |
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|---|---|---|
| .. | ||
| bpftool | ||
| resolve_btfids | ||
| runqslower | ||
| .gitignore | ||
| bpf_asm.c | ||
| bpf_dbg.c | ||
| bpf_exp.l | ||
| bpf_exp.y | ||
| bpf_jit_disasm.c | ||
| Makefile | ||