netdev - RE: [PATCH bpf-next v7 11/11] selftests/bpf: Tests for sockmap/sockhash holding listening sockets

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Date:   Thu, 20 Feb 2020 19:56:26 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Jakub Sitnicki <jakub@...udflare.com>, bpf@...r.kernel.org
Cc:     netdev@...r.kernel.org, kernel-team@...udflare.com,
        John Fastabend <john.fastabend@...il.com>,
        Lorenz Bauer <lmb@...udflare.com>, Martin Lau <kafai@...com>
Subject: RE: [PATCH bpf-next v7 11/11] selftests/bpf: Tests for
 sockmap/sockhash holding listening sockets

Jakub Sitnicki wrote:
> Now that SOCKMAP and SOCKHASH map types can store listening sockets,
> user-space and BPF API is open to a new set of potential pitfalls.
> 
> Exercise the map operations, with extra attention to code paths susceptible
> to races between map ops and socket cloning, and BPF helpers that work with
> SOCKMAP/SOCKHASH to gain confidence that all works as expected.
> 
> Signed-off-by: Jakub Sitnicki <jakub@...udflare.com>
> ---
>  .../selftests/bpf/prog_tests/sockmap_listen.c | 1496 +++++++++++++++++
>  .../selftests/bpf/progs/test_sockmap_listen.c |   98 ++
>  2 files changed, 1594 insertions(+)
>  create mode 100644 tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
>  create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_listen.c

Reminds me I need to clean up the sock{map|hash} tests as well.

Acked-by: John Fastabend <john.fastabend@...il.com>