> Are you working with an skb at that point in time in wifi? Yes.
> There are > 3 different ways of accessing skb data, see [1] slide 7 - 10. The BPF > LD_ABS/IND instructions were carried over from cBPF and are the only > ones that convert to host endianess. It can be used in eBPF as well, > but there are more efficient ways like 'direct packet access' or > helpers such as bpf_skb_load_bytes() that load the raw buffers as-is, > which is probably what you want if I understand you correctly. Sounds like, yeah. > There are instructions to convert endianess, see __bpf_prog_run(), > the ALU_END_TO_BE, ALU_END_TO_LE labels for details. There's a > BPF_ENDIAN() macro used in the test suite and other places. Ok, thanks! :) So sounds like I don't need anything special - should have a patch to hook up the wifi stuff soon. johannes
