netdev - [PATCH bpf-next 0/7] bpf: getsockopt and setsockopt hooks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190604213524.76347-1-sdf@google.com>
Date:   Tue,  4 Jun 2019 14:35:17 -0700
From:   Stanislav Fomichev <sdf@...gle.com>
To:     netdev@...r.kernel.org, bpf@...r.kernel.org
Cc:     davem@...emloft.net, ast@...nel.org, daniel@...earbox.net,
        Stanislav Fomichev <sdf@...gle.com>
Subject: [PATCH bpf-next 0/7] bpf: getsockopt and setsockopt hooks

This series implements two new per-cgroup hooks: getsockopt and
setsockopt along with a new sockopt program type. The idea is pretty
similar to recently introduced cgroup sysctl hooks, but
implementation is simpler (no need to convert to/from strings).

What this can be applied to:
* move business logic of what tos/priority/etc can be set by
  containers (either pass or reject)
* handle existing options (or introduce new ones) differently by
  propagating some information in cgroup/socket local storage

Compared to a simple syscall/{g,s}etsockopt tracepoint, those
hooks are context aware. Meaning, they can access underlying socket
and use cgroup and socket local storage.

Stanislav Fomichev (7):
  bpf: implement getsockopt and setsockopt hooks
  bpf: sync bpf.h to tools/
  libbpf: support sockopt hooks
  selftests/bpf: test sockopt section name
  selftests/bpf: add sockopt test
  bpf: add sockopt documentation
  bpftool: support cgroup sockopt

 Documentation/bpf/index.rst                   |   1 +
 Documentation/bpf/prog_cgroup_sockopt.rst     |  42 +
 include/linux/bpf-cgroup.h                    |  29 +
 include/linux/bpf.h                           |   2 +
 include/linux/bpf_types.h                     |   1 +
 include/linux/filter.h                        |  19 +
 include/uapi/linux/bpf.h                      |  17 +-
 kernel/bpf/cgroup.c                           | 288 +++++++
 kernel/bpf/syscall.c                          |  19 +
 kernel/bpf/verifier.c                         |  12 +
 net/core/filter.c                             |   4 +-
 net/socket.c                                  |  18 +
 .../bpftool/Documentation/bpftool-cgroup.rst  |   7 +-
 .../bpftool/Documentation/bpftool-prog.rst    |   2 +-
 tools/bpf/bpftool/bash-completion/bpftool     |   8 +-
 tools/bpf/bpftool/cgroup.c                    |   5 +-
 tools/bpf/bpftool/main.h                      |   1 +
 tools/bpf/bpftool/prog.c                      |   3 +-
 tools/include/uapi/linux/bpf.h                |  17 +-
 tools/lib/bpf/libbpf.c                        |   5 +
 tools/lib/bpf/libbpf_probes.c                 |   1 +
 tools/testing/selftests/bpf/.gitignore        |   1 +
 tools/testing/selftests/bpf/Makefile          |   3 +-
 tools/testing/selftests/bpf/bpf_helpers.h     |   2 +
 .../selftests/bpf/test_section_names.c        |  10 +
 tools/testing/selftests/bpf/test_sockopt.c    | 789 ++++++++++++++++++
 26 files changed, 1293 insertions(+), 13 deletions(-)
 create mode 100644 Documentation/bpf/prog_cgroup_sockopt.rst
 create mode 100644 tools/testing/selftests/bpf/test_sockopt.c

-- 
2.22.0.rc1.311.g5d7573a151-goog