netdev - Re: [PATCH] mac80211: rewrite fragmentation code

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]

Date:	Mon, 19 May 2008 13:08:13 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	David Miller <davem@...emloft.net>
Cc:	herbert@...dor.apana.org.au, mb@...sch.de,
	johannes@...solutions.net, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org, ron.rindjunsky@...el.com, tomasw@...il.com,
	ivdoorn@...il.com, peter.p.waskiewicz.jr@...el.com
Subject: Re: [PATCH] mac80211: rewrite fragmentation code

On Saturday 17 May 2008 05:40:39 David Miller wrote:
> My description describes how I want the mid-layer queue to disappear
> entirely.  Queueing would be done by the driver only.

Ok, the more I ponder this, the more I like it.  It has a very nice side 
benefit for virtio_net: we can xmit a whole bunch of packets before notifying 
the host.  Real NICs might gain similarly.

The bit I can't see is what to do about qdisc if the driver manages its own 
queue(s).  Leave the qdisc as currently in place and have the driver call 
dev_dequeue_skb() (or some wrapper) directly?  Modulo locking issues, that 
should be a fairly simple change.

Thanks,
Rusty.
--
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