netdev - [bpf-next V2 PATCH 0/5] tools/libbpf improvements and selftests

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Message-ID: <151792880187.16520.14567856474057331630.stgit@firesoul>
Date:   Tue, 06 Feb 2018 15:54:02 +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:     jakub.kicinski@...ronome.com, joe@....org, acme@...hat.com,
        eric@...it.org, Jesper Dangaard Brouer <brouer@...hat.com>,
        yhs@...com
Subject: [bpf-next V2 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
      selftests/bpf: 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/include/uapi/linux/bpf_common.h          |    7 +
 tools/lib/bpf/libbpf.c                         |   32 +++--
 tools/testing/selftests/bpf/Makefile           |   12 ++
 tools/testing/selftests/bpf/test_libbpf.sh     |   49 ++++++++
 tools/testing/selftests/bpf/test_libbpf_open.c |  150 ++++++++++++++++++++++++
 5 files changed, 234 insertions(+), 16 deletions(-)
 create mode 100755 tools/testing/selftests/bpf/test_libbpf.sh
 create mode 100644 tools/testing/selftests/bpf/test_libbpf_open.c

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