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Date:   Tue, 30 Jun 2020 08:21:23 -0700
From:   Andrii Nakryiko <>
To:     <>, <>, <>,
CC:     <>, <>,
        Andrii Nakryiko <>
Subject: [PATCH v3 bpf-next 0/2] Make bpf_endian.h compatible with vmlinux.h

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.

- explicit zero-initialization of global variables (Daniel);

- 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


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