From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Graf Subject: Re: [PATCH] sctp: Do not account for sizeof(struct sk_buff) in estimated rwnd Date: Tue, 20 Dec 2011 04:39:10 -0500 Message-ID: <20111220093910.GB21801@canuck.infradead.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: vladislav.yasevich@hp.com, linux-sctp@vger.kernel.org, davem@davemloft.net, netdev@vger.kernel.org To: Wei Yongjun Return-path: Received: from merlin.infradead.org ([205.233.59.134]:36338 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751944Ab1LTJjN (ORCPT ); Tue, 20 Dec 2011 04:39:13 -0500 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Tue, Dec 20, 2011 at 01:00:48PM +0800, Wei Yongjun wrote: > I saw you discussed this with Vlad in old mail: > http://www.spinics.net/lists/linux-sctp/msg01365.html > > You said you will update patch to include a per packet overhead, > but it does not include in this patch, what's wrong with in? It's not possible because upon retransmission of a chunk we need to readd the overhead to the rwnd. There is no longer a reference to a packet so we can't know how much to add. This explanation is also in the original mail thread.