netdev - Re: [PATCH v3 0/4] bpf: allow zero-initialising hash map seed

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Date:   Tue, 20 Nov 2018 00:56:09 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Lorenz Bauer <lmb@...udflare.com>, ast@...nel.org
Cc:     netdev@...r.kernel.org, linux-api@...r.kernel.org,
        songliubraving@...com
Subject: Re: [PATCH v3 0/4] bpf: allow zero-initialising hash map seed

On 11/16/2018 12:41 PM, Lorenz Bauer wrote:
> Allow forcing the seed of a hash table to zero, for deterministic
> execution during benchmarking and testing.
> 
> Changes from v2:
> * Change ordering of BPF_F_ZERO_SEED in linux/bpf.h
> 
> Comments adressed from v1:
> * Add comment to discourage production use to linux/bpf.h
> * Require CAP_SYS_ADMIN
> 
> Lorenz Bauer (4):
>   bpf: allow zero-initializing hash map seed
>   bpf: move BPF_F_QUERY_EFFECTIVE after map flags
>   tools: sync linux/bpf.h
>   tools: add selftest for BPF_F_ZERO_SEED
> 
>  include/uapi/linux/bpf.h                |  9 ++--
>  kernel/bpf/hashtab.c                    | 13 ++++-
>  tools/include/uapi/linux/bpf.h          | 13 +++--
>  tools/testing/selftests/bpf/test_maps.c | 68 +++++++++++++++++++++----
>  4 files changed, 84 insertions(+), 19 deletions(-)
> 

Applied to bpf-next, thanks!