netdev - Re: [Patch bpf-next 18/19] selftests/bpf: add test cases for unix and udp sockmap

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Message-ID: <87h7mq4wh0.fsf@cloudflare.com>
Date:   Fri, 05 Feb 2021 11:53:15 +0100
From:   Jakub Sitnicki <jakub@...udflare.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        duanxiongchun@...edance.com, wangdongdong.6@...edance.com,
        jiang.wang@...edance.com, Cong Wang <cong.wang@...edance.com>,
        John Fastabend <john.fastabend@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenz Bauer <lmb@...udflare.com>
Subject: Re: [Patch bpf-next 18/19] selftests/bpf: add test cases for unix
 and udp sockmap

On Wed, Feb 03, 2021 at 05:16 AM CET, Cong Wang wrote:
> From: Cong Wang <cong.wang@...edance.com>
>
> Add two test cases to ensure redirection between two
> AF_UNIX sockets or two UDP sockets work.
>
> Cc: John Fastabend <john.fastabend@...il.com>
> Cc: Daniel Borkmann <daniel@...earbox.net>
> Cc: Jakub Sitnicki <jakub@...udflare.com>
> Cc: Lorenz Bauer <lmb@...udflare.com>
> Signed-off-by: Cong Wang <cong.wang@...edance.com>
> ---

If you extract a helper for creating a pair of connected sockets that:

 1) delegates to socketpair() for AF_UNIX,
 2) emulates socketpair() for INET/DGRAM,

then tests for INET and UNIX datagram sockets could share code.

[...]