From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH v2 net-next] tcp: snmp stats for Fast Open, SYN rtx, and data pkts Date: Mon, 03 Mar 2014 15:58:24 -0500 (EST) Message-ID: <20140303.155824.2235118519552620477.davem@davemloft.net> References: <1393878696-28137-1-git-send-email-ycheng@google.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, edumazet@google.com, nanditad@google.com, brakmo@google.com To: ycheng@google.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:55054 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753241AbaCCU60 (ORCPT ); Mon, 3 Mar 2014 15:58:26 -0500 In-Reply-To: <1393878696-28137-1-git-send-email-ycheng@google.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Yuchung Cheng Date: Mon, 3 Mar 2014 12:31:36 -0800 > Add the following snmp stats: > > TCPFastOpenActiveFail: Fast Open attempts (SYN/data) failed beacuse > the remote does not accept it or the attempts timed out. > > TCPSynRetrans: number of SYN and SYN/ACK retransmits to break down > retransmissions into SYN, fast-retransmits, timeout retransmits, etc. > > TCPOrigDataSent: number of outgoing packets with original data (excluding > retransmission but including data-in-SYN). This counter is different from > TcpOutSegs because TcpOutSegs also tracks pure ACKs. TCPOrigDataSent is > more useful to track the TCP retransmission rate. > > Change TCPFastOpenActive to track only successful Fast Opens to be symmetric to > TCPFastOpenPassive. > > Signed-off-by: Yuchung Cheng > Signed-off-by: Eric Dumazet > Signed-off-by: Nandita Dukkipati > Signed-off-by: Lawrence Brakmo Applied, thank you.