Re: [patch] TCP/IP delacks disabled with MPI

Alan Cox (alan@lxorguk.ukuu.org.uk)
Wed, 2 Jun 1999 15:47:21 +0100 (BST)

> > you find out. Finally the sync protocols generate their own frames like keepalive for
> > the link state so setting dev->tbusy means it will never come back
>
> It will be awaken by watchdog. And not with data rate, but with
> watchdog rate ~5sec.

Not what I meant.

The sync code uses dev_queue_xmit() to queue the keepalive and link setup
frames for PPP and Cisco HDLC. So setting dev->tbusy when the link goes down
means it will never come back as the link setup will never be allowed to occur

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