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  • Yonghong Song's avatar
    samples/bpf: fix a build issue · 53335022
    Yonghong Song authored
    
    
    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: default avatarYonghong Song <yhs@fb.com>
    Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
    Acked-by: default avatarLawrence Brakmo <brakmo@fb.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    53335022