From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David S. Miller" Subject: Re: [RFC/PATCH] "strict" ipv4 reassembly Date: Tue, 17 May 2005 11:48:29 -0700 (PDT) Message-ID: <20050517.114829.115910656.davem@davemloft.net> References: <20050517.104947.112621738.davem@davemloft.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@oss.sgi.com Return-path: To: akepner@sgi.com In-Reply-To: Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org From: Arthur Kepner Date: Tue, 17 May 2005 11:28:05 -0700 (PDT) > On Tue, 17 May 2005, David S.Miller wrote: > > > Decreasing ipfrag_time is also not an option, because then > > you break fragmentation for packet radio folks :-) > > Different sysctls for different folks.... Can I tell users to call you when they enable the strict fragmentation and they can no longer talk UDP to remote sites outside of their subnet, or it breaks on their heavily SMP machine due to natural system local packet reordering? Packet reordering happens on the local machine with SMP. There is no way to avoid this. And when it triggers your patch will drop frags on the ground all the time. If you want to fix things, do it without knowingly breaking stuff that does currently work.