From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: Re: [NET]: Add netif_tx_lock Date: Mon, 05 Jun 2006 21:44:01 -0700 Message-ID: References: <20060531.170908.46214247.davem@davemloft.net> <20060601002525.GA19220@gondor.apana.org.au> <20060601111503.GA16097@gondor.apana.org.au> <20060605.213250.85688925.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: herbert@gondor.apana.org.au, mchan@broadcom.com, jgarzik@pobox.com, netdev@vger.kernel.org Return-path: Received: from sj-iport-5.cisco.com ([171.68.10.87]:49777 "EHLO sj-iport-5.cisco.com") by vger.kernel.org with ESMTP id S1750863AbWFFEoI (ORCPT ); Tue, 6 Jun 2006 00:44:08 -0400 To: David Miller In-Reply-To: <20060605.213250.85688925.davem@davemloft.net> (David Miller's message of "Mon, 05 Jun 2006 21:32:50 -0700 (PDT)") Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org > IPOIB is going to BUG() with this change. Because now, in their > multicast code, you're going to local_bh_disable() via > netif_tx_unlock() with hw IRQs disabled which is illegal. > > It shows a bug here in the locking of the IPOIB driver. Sorry, I haven't followed this thread closely. Can you expand on what the bug in ipoib's multicast locking is? Thanks, Roland