netdev - Re: [PATCH] selftests/net: enable lo.accept_local in psock

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Message-ID: <CA+FuTSdoZeAncRVAYrb66Kp6bEueWrgyy7A8qP0kmr9pxfHMoA@mail.gmail.com>
Date:   Fri, 20 May 2022 09:52:27 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Yun Lu <luyun_611@....com>
Cc:     davem@...emloft.net, edumazet@...gle.com, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH] selftests/net: enable lo.accept_local in psock_snd test

On Fri, May 20, 2022 at 2:40 AM Yun Lu <luyun_611@....com> wrote:
>
> From: luyun <luyun@...inos.cn>
>
> The psock_snd test sends and recievs packets over loopback, but the
> parameter lo.accept_local is disabled by default, this test will
> fail with Resource temporarily unavailable:
> sudo ./psock_snd.sh
> dgram
> tx: 128
> rx: 142
> ./psock_snd: recv: Resource temporarily unavailable

I cannot reproduce this failure.

Passes on a machine with accept_local 0.

accept_local is defined as

"
accept_local - BOOLEAN
    Accept packets with local source addresses. In combination
    with suitable routing, this can be used to direct packets
    between two local interfaces over the wire and have them
    accepted properly.
"