netdev - Re: future developments of usbnet

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20110512.134655.235895548164532973.davem@davemloft.net>
Date:	Thu, 12 May 2011 13:46:55 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	oliver@...kum.org
Cc:	shemminger@...tta.com, stern@...land.harvard.edu,
	tom.leiming@...il.com, netdev@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: future developments of usbnet

From: Oliver Neukum <oliver@...kum.org>
Date: Thu, 12 May 2011 09:59:28 +0200

> Our problem here is that USB doesn't work sanely without
> interrupts. We can stop IO regarding rx, but we cannot stop
> interrupts if we want to do rx.

Understood.

However, I was wondering if you could do this in software.  When URBs
trigger, just queue that pending work up in a software queue when NAPI
is scheduled, then when you exit NAPI polling you check that queue to
see if there are interrupt events to process.

Similarly to how we handle software interrupts.

Anyways, just an idea.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html