On Thu, 15 Jun 2017 00:47:15 +0200 Daniel Borkmann <dan...@iogearbox.net> wrote:
> panji reported that he wasn't able to build iproute2's bpf library > due to lack of __NR_bpf in his system headers. Providing a fallback > definition when __NR_bpf is not available in the system lets the > loader compile just fine, so lets add them for majority of archs. > > Reported-by: panji <j...@live.nl> > Signed-off-by: Daniel Borkmann <dan...@iogearbox.net> > --- > lib/bpf.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/lib/bpf.c b/lib/bpf.c > index ae4d97d..e1e29cc 100644 > --- a/lib/bpf.c > +++ b/lib/bpf.c > @@ -128,6 +128,26 @@ static inline __u64 bpf_ptr_to_u64(const void *ptr) > return (__u64)(unsigned long)ptr; > } > > +#ifndef __NR_bpf > +# if defined(__i386__) > +# define __NR_bpf 357 > +# elif defined(__x86_64__) > +# define __NR_bpf 321 > +# elif defined(__aarch64__) > +# define __NR_bpf 280 > +# elif defined(__sparc__) > +# define __NR_bpf 349 > +# elif defined(__arm__) > +# define __NR_bpf 386 > +# elif defined(__powerpc__) > +# define __NR_bpf 361 > +# elif defined(__s390__) > +# define __NR_bpf 351 > +# else > +# error __NR_bpf not defined. Update kernel headers. > +# endif > +#endif > + > static int bpf(int cmd, union bpf_attr *attr, unsigned int size) > { > #ifdef __NR_bpf Sorry this looks like a mess. enumerating architectures in two different projects is likely to break in future.