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From: Xie He <xie.he.0141@gmail.com>
To: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Network Development <netdev@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Linux X25 <linux-x25@vger.kernel.org>,
	Martin Schiller <ms@dev.tdt.de>
Subject: Re: [PATCH net] drivers/net/wan/lapbether: Added needed_tailroom
Date: Sun, 9 Aug 2020 10:11:39 -0700	[thread overview]
Message-ID: <CAJht_EM9q9u34LMAeYsYe5voZ54s3Z7OzxtvSomcF9a9wRvuCQ@mail.gmail.com> (raw)
In-Reply-To: <CA+FuTSfxWhq0pxEGPtOMjFUB7-4Vax6XMGsLL++28LwSOU5b3g@mail.gmail.com>

On Sun, Aug 9, 2020 at 1:48 AM Willem de Bruijn
<willemdebruijn.kernel@gmail.com> wrote:
>
> Does this solve an actual observed bug?
>
> In many ways lapbeth is similar to tunnel devices. This is not common.

Thank you for your comment!

This doesn't solve a bug observed by me. But I think this should be
necessary considering the logic of the code.

Using "grep", I found that there were indeed Ethernet drivers that set
needed_tailroom. I found it was set in these files:
    drivers/net/ethernet/sun/sunvnet.c
    drivers/net/ethernet/sun/ldmvsw.c
Setting needed_tailroom may be necessary for this driver to run those
Ethernet devices.

  reply	other threads:[~2020-08-09 17:11 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-08 17:52 Xie He
2020-08-09  8:48 ` Willem de Bruijn
2020-08-09 17:11   ` Xie He [this message]
2020-08-10  7:31     ` Willem de Bruijn
2020-08-10 18:13       ` Xie He
2020-08-16  2:28         ` Xie He
2020-08-19  0:17 ` Xie He
2020-08-19 22:11 ` Xie He

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