On (03/20/19 15:27), Stanislav Fomichev wrote: [..] > > Inside kernel clang compiler header (linux/compiler-clang.h) does not > > define __HAVE_BUILTIN_BSWAP16__. So it will go to the "else" branch in > > the above. So I think it should work with clang + bpf. > Hm, isn't it the opposite of what we want then? I think for llvm+bpf we always > want to use the builtins to make it properly generate > BPF_TO_BE/BPF_TO_LE instructions. Oh, hmm, OK. I see your point now. bpf insn set for variables. -ss