netdev - [PATCH 0/3] bpf: allow zero-initialising hash map seed

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: <20181001104509.24211-1-lmb@cloudflare.com>
Date:   Mon,  1 Oct 2018 11:45:06 +0100
From:   Lorenz Bauer <lmb@...udflare.com>
To:     ast@...nel.org, daniel@...earbox.net
Cc:     netdev@...r.kernel.org, linux-api@...r.kernel.org,
        Lorenz Bauer <lmb@...udflare.com>
Subject: [PATCH 0/3] bpf: allow zero-initialising hash map seed

This patch set adds a new flag BPF_F_ZERO_SEED, which allows
forcing the seed used by hash maps to zero. This makes
it possible to write deterministic tests.

Based on an off-list conversation with Alexei Starovoitov and
Daniel Borkmann.

Lorenz Bauer (3):
  bpf: allow zero-initializing hash map seed
  tools: sync linux/bpf.h
  tools: add selftest for BPF_F_ZERO_SEED

 include/uapi/linux/bpf.h                |  2 +
 kernel/bpf/hashtab.c                    |  8 ++-
 tools/include/uapi/linux/bpf.h          |  2 +
 tools/testing/selftests/bpf/test_maps.c | 67 +++++++++++++++++++++----
 4 files changed, 66 insertions(+), 13 deletions(-)

-- 
2.17.1