netdev - [PATCH bpf-next 0/6] tools: bpftool: add options for debug info from libbpf and verifier

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Date:   Mon, 29 Apr 2019 10:52:21 +0100
From:   Quentin Monnet <quentin.monnet@...ronome.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     bpf@...r.kernel.org, netdev@...r.kernel.org,
        oss-drivers@...ronome.com,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: [PATCH bpf-next 0/6] tools: bpftool: add options for debug info from libbpf and verifier

Hi,
This series adds several options to bpftool to make it print additional
information via libbpf or the kernel verifier when attempting to load
programs.

A first option is used to select the log level for libbpf, and a second one
is used for the verifier level. A third option (with a short name) is added
as a shortcut for printing all available information from both components.

A new API function is added to libbpf in order to pass the log_level from
bpftool with the bpf_object__* part of the API. Also, the flags defined to
name the verifier log levels are moved from kernel headers to UAPI headers,
in an effort to make it easier to users to pass the value they want.

Quentin Monnet (6):
  tools: bpftool: add --log-libbpf option to get debug info from libbpf
  tools: bpftool: add --log-all option to print all possible log info
  libbpf: add bpf_object__load_xattr() API function to pass log_level
  bpf: make BPF_LOG_* flags available in UAPI header
  tools: bpf: report latest changes from BPF UAPI header to tools
  tools: bpftool: add --log-verifier option to print kernel debug logs

 include/linux/bpf_verifier.h                  |   3 -
 include/uapi/linux/bpf.h                      |   5 +
 .../bpftool/Documentation/bpftool-prog.rst    |  20 ++++
 tools/bpf/bpftool/bash-completion/bpftool     |  46 +++++++-
 tools/bpf/bpftool/main.c                      | 105 ++++++++++++++++--
 tools/bpf/bpftool/main.h                      |   1 +
 tools/bpf/bpftool/prog.c                      |  24 ++--
 tools/include/uapi/linux/bpf.h                |   5 +
 tools/lib/bpf/libbpf.c                        |  20 +++-
 tools/lib/bpf/libbpf.h                        |   6 +
 tools/lib/bpf/libbpf.map                      |   1 +
 11 files changed, 211 insertions(+), 25 deletions(-)

-- 
2.17.1