From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Richter Subject: Re: [Q] How to invalidate ARP cache for a network device from within kernel Date: Sat, 27 Nov 2010 02:18:33 +0100 Message-ID: <20101127021833.328e8942@stein> References: <1290793099.3716.21.camel@maxim-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: "netdev@vger.kernel.org" , linux1394-devel To: Maxim Levitsky Return-path: In-Reply-To: <1290793099.3716.21.camel@maxim-laptop> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux1394-devel-bounces@lists.sourceforge.net List-Id: netdev.vger.kernel.org On Nov 26 Maxim Levitsky wrote: > However as soon as bus reset happens, the upper layer ARP cache isn't > invalidated, thus all attempts to send packets to remote node now fail, > because the additional information (node id and bus address) about > remote node is now invalid, but ARP core doesn't send ARP requests > because it has the response in the cache. When is this a problem? With nodes which stay on the bus (i.e. are present before and after the bus reset)? Or with nodes which go away and come back much later (but before the old ARP cache entry was cleaned out)? -- Stefan Richter -=====-==-=- =-== ==-== http://arcgraph.de/sr/ ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev