From patchwork Wed Dec 9 08:26:19 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kumar X-Patchwork-Id: 40713 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by ozlabs.org (Postfix) with ESMTP id 492CEB7B3E for ; Wed, 9 Dec 2009 19:26:38 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751727AbZLII0V (ORCPT ); Wed, 9 Dec 2009 03:26:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751681AbZLII0U (ORCPT ); Wed, 9 Dec 2009 03:26:20 -0500 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:49534 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751640AbZLII0T (ORCPT ); Wed, 9 Dec 2009 03:26:19 -0500 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by e28smtp01.in.ibm.com (8.14.3/8.13.1) with ESMTP id nB98QK36006629 for ; Wed, 9 Dec 2009 13:56:20 +0530 Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay03.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id nB98QKTc3711080 for ; Wed, 9 Dec 2009 13:56:20 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id nB98QJv9032742 for ; Wed, 9 Dec 2009 19:26:20 +1100 Received: from localhost.localdomain ([9.77.125.84]) by d28av03.in.ibm.com (8.14.3/8.13.1/NCO v10.0 AVin) with ESMTP id nB98QJxp032566; Wed, 9 Dec 2009 19:26:19 +1100 From: Krishna Kumar To: davem@davemloft.net Cc: netdev@vger.kernel.org, Krishna Kumar Date: Wed, 09 Dec 2009 13:56:19 +0530 Message-Id: <20091209082619.19055.10563.sendpatchset@localhost.localdomain> In-Reply-To: <20091209082613.19055.58864.sendpatchset@localhost.localdomain> References: <20091209082613.19055.58864.sendpatchset@localhost.localdomain> Subject: [PATCH 2/3] tcp: Remove unrequired operations in tcp_push() Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Krishna Kumar Remove unrequired operations in tcp_push() Signed-off-by: Krishna Kumar --- net/ipv4/tcp.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff -ruNp org/net/ipv4/tcp.c new/net/ipv4/tcp.c --- org/net/ipv4/tcp.c 2009-12-04 18:16:10.000000000 +0530 +++ new/net/ipv4/tcp.c 2009-12-09 10:01:35.000000000 +0530 @@ -536,8 +536,7 @@ static inline void skb_entail(struct soc tp->nonagle &= ~TCP_NAGLE_PUSH; } -static inline void tcp_mark_urg(struct tcp_sock *tp, int flags, - struct sk_buff *skb) +static inline void tcp_mark_urg(struct tcp_sock *tp, int flags) { if (flags & MSG_OOB) tp->snd_up = tp->write_seq; @@ -546,13 +545,15 @@ static inline void tcp_mark_urg(struct t static inline void tcp_push(struct sock *sk, int flags, int mss_now, int nonagle) { - struct tcp_sock *tp = tcp_sk(sk); - if (tcp_send_head(sk)) { - struct sk_buff *skb = tcp_write_queue_tail(sk); - if (!(flags & MSG_MORE) || forced_push(tp)) + struct tcp_sock *tp = tcp_sk(sk); + + if (!(flags & MSG_MORE) || forced_push(tp)) { + struct sk_buff *skb = tcp_write_queue_tail(sk); + tcp_mark_push(tp, skb); - tcp_mark_urg(tp, flags, skb); + } + tcp_mark_urg(tp, flags); __tcp_push_pending_frames(sk, mss_now, (flags & MSG_MORE) ? TCP_NAGLE_CORK : nonagle); }