From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Doug Graham" Date: Fri, 31 Jul 2009 17:09:39 +0000 Subject: Re: [PATCHv2] sctp: Do not create SACK chunk if the final packet Message-Id: <4A732553.30403@nortel.com> List-Id: References: <4A72C518.20200@cn.fujitsu.com> In-Reply-To: <4A72C518.20200@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sctp@vger.kernel.org Vlad Yasevich wrote: > Wei Yongjun wrote: > >> >> Why we need to send the SACK immediate? Just to make the one send one >> recv mode happy? >> In this case, it is better to disable the delay ack, is this correct? >> > > Consistent behavior. A change in message size shouldn't cause a change in > on the wire behavior. > > Either we always send a SACK if we have DATA to send, or we don't. Having a > weird "only if it fits" behavior will have unpredictable results. > Exactly! --Doug