On 6/30/20 5:21 PM, Andrii Nakryiko wrote:

Change libbpf's bpf_endian.h header to be compatible when used with system
headers and when using just vmlinux.h. This is a frequent request for users
writing BPF CO-RE applications. Do this by re-implementing byte swap
compile-time macros. Also add simple tests validating correct results both for
byte-swapping built-ins and macros.

v2->v3:
- explicit zero-initialization of global variables (Daniel);

v1->v2:
- reimplement byte swapping macros (Alexei).

Andrii Nakryiko (2):
   libbpf: make bpf_endian co-exist with vmlinux.h
   selftests/bpf: add byte swapping selftest

  tools/lib/bpf/bpf_endian.h                    | 43 ++++++++++++---
  .../testing/selftests/bpf/prog_tests/endian.c | 53 +++++++++++++++++++
  .../testing/selftests/bpf/progs/test_endian.c | 37 +++++++++++++
  3 files changed, 125 insertions(+), 8 deletions(-)
  create mode 100644 tools/testing/selftests/bpf/prog_tests/endian.c
  create mode 100644 tools/testing/selftests/bpf/progs/test_endian.c

All good now & applied, thanks!