netdev - [bpf-next PATCH 0/5] tools/libbpf improvements and selftests

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Date:   Sat, 27 Jan 2018 18:26:57 +0100
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     netdev@...r.kernel.org, Daniel Borkmann <borkmann@...earbox.net>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        wangnan0@...wei.com
Cc:     acme@...hat.com, joe@....org, jakub.kicinski@...ronome.com,
        eric@...it.org, Jesper Dangaard Brouer <brouer@...hat.com>
Subject: [bpf-next PATCH 0/5] tools/libbpf improvements and selftests

While playing with using libbpf for the Suricata project, we had
issues LLVM >= 4.0.1 generating ELF files that could not be loaded
with libbpf (tools/lib/bpf/).

During the troubleshooting phase, I wrote a test program and improved
the debugging output in libbpf.  I turned this into a selftests
program, and it also serves as a code example for libbpf in itself.

I discovered that there are at least three ELF load issues with
libbpf.  I left them as TODO comments in (tools/testing/selftests/bpf)
test_libbpf.sh. I've only fixed the load issue with eh_frames.  We can
work on the other issues later.

---

Jesper Dangaard Brouer (5):
      bpf: Sync kernel ABI header with tooling header for bpf_common.h
      tools/libbpf: improve the pr_debug statements to contain section numbers
      tools/libbpf: add test program for loading BPF ELF files
      selftests/bpf: add selftest that use test_libbpf_open
      tools/libbpf: handle issues with bpf ELF objects containing .eh_frames

 tools/testing/selftests/bpf/Makefile       |    9 +++++-
 tools/testing/selftests/bpf/test_libbpf.sh |   45 ++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100755 tools/testing/selftests/bpf/test_libbpf.sh

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