samples/bpf: fix a build issue
authorYonghong Song <yhs@fb.com>
Mon, 10 Jul 2017 21:04:28 +0000 (14:04 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 12 Jul 2017 03:51:29 +0000 (20:51 -0700)
commit533350227d95937703aaa16414701eadd67f3ac3
tree0fb01390f34db0ba88a21511fff195c0f06cd03d
parent1bfb159673957644951ab0a8d2aec44b93ddb1ae
samples/bpf: fix a build issue

With latest net-next:

====
clang  -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated  -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h  -Isamples/bpf \
    -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \
    -Wno-compare-distinct-pointer-types \
    -Wno-gnu-variable-sized-type-not-at-end \
    -Wno-address-of-packed-member -Wno-tautological-compare \
    -Wno-unknown-warning-option \
    -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o
samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found
          ^~~~~~~~~~~~~~
1 error generated.
====

net has the same issue.

Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h.
Also move bpf_helpers.h from samples/bpf to selftests/bpf and change
compiler include logic so that programs in samples/bpf can access the headers
in selftests/bpf, but not the other way around.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
samples/bpf/Makefile
samples/bpf/bpf_helpers.h [deleted file]
tools/testing/selftests/bpf/Makefile
tools/testing/selftests/bpf/bpf_endian.h
tools/testing/selftests/bpf/bpf_helpers.h [new file with mode: 0644]