From mboxrd@z Thu Jan 1 00:00:00 1970 From: Larry Finger Subject: Re: [PATCH] b43: Increase number of RX DMA slots Date: Tue, 19 Feb 2013 12:28:13 -0600 Message-ID: <5123C43D.2020602@lwfinger.net> References: <20130219.005206.397289032011003833.davem@davemloft.net> <5123BCFF.5090408@lwfinger.net> <20130219.131553.787630407148880340.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: David.Laight@ACULAB.COM, linville@tuxdriver.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, bittorf@bluebottle.com, stable@vger.kernel.org To: David Miller Return-path: Received: from mail-yh0-f49.google.com ([209.85.213.49]:52302 "EHLO mail-yh0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933152Ab3BSS2R (ORCPT ); Tue, 19 Feb 2013 13:28:17 -0500 In-Reply-To: <20130219.131553.787630407148880340.davem@davemloft.net> Sender: netdev-owner@vger.kernel.org List-ID: On 02/19/2013 12:15 PM, David Miller wrote: > I understand your constraints, but this is a trivially remotely > DoS'able condition even on slow CPU atom laptops. > > Send an "expansive" full sized frame followed by 300 or so 64-byte UDP > packets --> instant hang. Thanks for the suggestion for a test. I think the reset solution should survive with only some packet loss, but we will find out. Larry