From patchwork Fri Mar 12 05:02:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rao, Lei" X-Patchwork-Id: 12133695 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E96BC433DB for ; Fri, 12 Mar 2021 05:31:49 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D339F61601 for ; Fri, 12 Mar 2021 05:31:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D339F61601 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:50538 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lKaOp-0004dI-QR for qemu-devel@archiver.kernel.org; Fri, 12 Mar 2021 00:31:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51670) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKaIj-0005CP-Nd for qemu-devel@nongnu.org; Fri, 12 Mar 2021 00:25:29 -0500 Received: from mga05.intel.com ([192.55.52.43]:4921) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKaIh-0006dL-RT for qemu-devel@nongnu.org; Fri, 12 Mar 2021 00:25:29 -0500 IronPort-SDR: rqR79SDcJmE+Zm6bjXDPdB3iOXehRGRswiGVEq2g4JmCmdgVSzSpB+MDqsu70IgZ+xBoXv442M sqUMzcblTJBA== X-IronPort-AV: E=McAfee;i="6000,8403,9920"; a="273826919" X-IronPort-AV: E=Sophos;i="5.81,242,1610438400"; d="scan'208";a="273826919" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2021 21:25:27 -0800 IronPort-SDR: XzuwBC1/mM0x90oJmRdWYRWSjWKB5uDzfep++Rr+aCHlHgjZfYyk/EnwDmZCYlCYvTKSqKoMtd VCRKLkshroZw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,242,1610438400"; d="scan'208";a="600481936" Received: from unknown (HELO localhost.localdomain.bj.intel.com) ([10.240.192.103]) by fmsmga006.fm.intel.com with ESMTP; 11 Mar 2021 21:25:23 -0800 From: leirao To: chen.zhang@intel.com, lizhijian@cn.fujitsu.com, jasowang@redhat.com, quintela@redhat.com, dgilbert@redhat.com, pbonzini@redhat.com, lukasstraub2@web.de Subject: [PATCH v2 05/10] Optimize the function of packet_new Date: Fri, 12 Mar 2021 13:02:58 +0800 Message-Id: <1615525383-59071-6-git-send-email-lei.rao@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1615525383-59071-1-git-send-email-lei.rao@intel.com> References: <1615525383-59071-1-git-send-email-lei.rao@intel.com> Received-SPF: pass client-ip=192.55.52.43; envelope-from=lei.rao@intel.com; helo=mga05.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Rao, Lei" , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Rao, Lei" if we put the data copy outside the packet_new(), then for the filter-rewrite module, there will be one less memory copy in the processing of each network packet. Signed-off-by: Lei Rao --- net/colo-compare.c | 7 +++++-- net/colo.c | 4 ++-- net/colo.h | 2 +- net/filter-rewriter.c | 1 - 4 files changed, 8 insertions(+), 6 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index 9e18baa..8bdf5a8 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -247,14 +247,17 @@ static int packet_enqueue(CompareState *s, int mode, Connection **con) ConnectionKey key; Packet *pkt = NULL; Connection *conn; + char *data = NULL; int ret; if (mode == PRIMARY_IN) { - pkt = packet_new(s->pri_rs.buf, + data = g_memdup(s->pri_rs.buf, s->pri_rs.packet_len); + pkt = packet_new(data, s->pri_rs.packet_len, s->pri_rs.vnet_hdr_len); } else { - pkt = packet_new(s->sec_rs.buf, + data = g_memdup(s->sec_rs.buf, s->sec_rs.packet_len); + pkt = packet_new(data, s->sec_rs.packet_len, s->sec_rs.vnet_hdr_len); } diff --git a/net/colo.c b/net/colo.c index ef00609..08fb37e 100644 --- a/net/colo.c +++ b/net/colo.c @@ -155,11 +155,11 @@ void connection_destroy(void *opaque) g_slice_free(Connection, conn); } -Packet *packet_new(const void *data, int size, int vnet_hdr_len) +Packet *packet_new(void *data, int size, int vnet_hdr_len) { Packet *pkt = g_slice_new(Packet); - pkt->data = g_memdup(data, size); + pkt->data = data; pkt->size = size; pkt->creation_ms = qemu_clock_get_ms(QEMU_CLOCK_HOST); pkt->vnet_hdr_len = vnet_hdr_len; diff --git a/net/colo.h b/net/colo.h index 573ab91..bd2d719 100644 --- a/net/colo.h +++ b/net/colo.h @@ -100,7 +100,7 @@ Connection *connection_get(GHashTable *connection_track_table, bool connection_has_tracked(GHashTable *connection_track_table, ConnectionKey *key); void connection_hashtable_reset(GHashTable *connection_track_table); -Packet *packet_new(const void *data, int size, int vnet_hdr_len); +Packet *packet_new(void *data, int size, int vnet_hdr_len); void packet_destroy(void *opaque, void *user_data); void packet_destroy_partial(void *opaque, void *user_data); diff --git a/net/filter-rewriter.c b/net/filter-rewriter.c index 10fe393..599f0c3 100644 --- a/net/filter-rewriter.c +++ b/net/filter-rewriter.c @@ -271,7 +271,6 @@ static ssize_t colo_rewriter_receive_iov(NetFilterState *nf, } pkt = packet_new(buf, size, vnet_hdr_len); - g_free(buf); /* * if we get tcp packet