netdev - Re: [0/8] netpoll/bridge fixes

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: <20100610215643.GA22048@gondor.apana.org.au>
Date:	Fri, 11 Jun 2010 07:56:43 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	"Michael S. Tsirkin" <mst@...hat.com>,
	Qianfeng Zhang <frzhang@...hat.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	WANG Cong <amwang@...hat.com>, Matt Mackall <mpm@...enic.com>
Subject: Re: [0/8] netpoll/bridge fixes

On Thu, Jun 10, 2010 at 07:49:12AM -0700, Stephen Hemminger wrote:
> 
> Thanks for looking at this, and yes the original code does
> look buggy. Not sure if I like the use of in_irq() to handle the netpoll
> packets as special case. Is in_irq() really reliable for this?

Yes because netpoll always calls ndo_start_xmit with IRQs disabled,
while on the normal TX path IRQs must be enabled (as otherwise
enabling BH would warn).

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
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