From patchwork Sun Jan 31 18:13:20 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Xu X-Patchwork-Id: 8174681 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8EA83BEEE5 for ; Sun, 31 Jan 2016 18:13:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C33D720351 for ; Sun, 31 Jan 2016 18:13:53 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 07C952034E for ; Sun, 31 Jan 2016 18:13:53 +0000 (UTC) Received: from localhost ([::1]:42696 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aPwVT-0001mH-Ra for patchwork-qemu-devel@patchwork.kernel.org; Sun, 31 Jan 2016 13:13:51 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36614) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aPwVL-0001lv-Ea for qemu-devel@nongnu.org; Sun, 31 Jan 2016 13:13:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aPwVJ-00067e-OO for qemu-devel@nongnu.org; Sun, 31 Jan 2016 13:13:43 -0500 Received: from mx1.redhat.com ([209.132.183.28]:49058) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aPwVJ-00067a-IU for qemu-devel@nongnu.org; Sun, 31 Jan 2016 13:13:41 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 4F9D8C057EC9 for ; Sun, 31 Jan 2016 18:13:41 +0000 (UTC) Received: from wei-thinkpad.nay.redhat.com (vpn1-6-127.pek2.redhat.com [10.72.6.127]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u0VIDVgN014091; Sun, 31 Jan 2016 13:13:37 -0500 From: wexu@redhat.com To: qemu-devel@nongnu.org Date: Mon, 1 Feb 2016 02:13:20 +0800 Message-Id: <1454264009-24094-2-git-send-email-wexu@redhat.com> In-Reply-To: <1454264009-24094-1-git-send-email-wexu@redhat.com> References: <1454264009-24094-1-git-send-email-wexu@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Wei Xu , victork@redhat.com, mst@redhat.com, jasowang@redhat.com, yvugenfi@redhat.com, Wei Xu , marcel@redhat.com, dfleytma@redhat.com Subject: [Qemu-devel] [RFC Patch v2 01/10] virtio-net rsc: Data structure, 'Segment', 'Chain' and 'Status' X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Wei Xu Segment is the coalesced packets in a connection. Status is to indicate the status while do coalescing, such as if a packet is bypassed or coalesced, etc. Chain is used to save the segments of different protocols in a VirtIONet instance. A timer is used in a chain to help purging the buffer/coalesced packets. Signed-off-by: Wei Xu --- include/hw/virtio/virtio.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 205fadf..1383220 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -127,6 +127,38 @@ typedef struct VirtioDeviceClass { int (*load)(VirtIODevice *vdev, QEMUFile *f, int version_id); } VirtioDeviceClass; +/* Coalesced packets type & status */ +typedef enum { + RSC_COALESCE, /* Data been coalesced */ + RSC_FINAL, /* Will terminate current connection */ + RSC_NO_MATCH, /* No matched in the buffer pool */ + RSC_BYPASS, /* Packet to be bypass, not tcp, tcp ctrl, etc */ + RSC_WANT /* Data want to be coalesced */ +} COALESCE_STATUS; + +/* Coalesced segmant */ +typedef struct NetRscSeg { + QTAILQ_ENTRY(NetRscSeg) next; + void *buf; + size_t size; + uint32_t dup_ack_count; + bool is_coalesced; /* need recal ipv4 header checksum, mark here */ + NetClientState *nc; +} NetRscSeg; + +/* Receive callback for ipv4/6 */ +typedef size_t (VirtioNetReceive) (void *, + NetClientState *, const uint8_t *, size_t); + +/* Chain is divided by protocol(ipv4/v6) and NetClientInfo */ +typedef struct NetRscChain { + QTAILQ_ENTRY(NetRscChain) next; + uint16_t proto; + VirtioNetReceive *do_receive; + QEMUTimer *drain_timer; + QTAILQ_HEAD(, NetRscSeg) buffers; +} NetRscChain; + void virtio_instance_init_common(Object *proxy_obj, void *data, size_t vdev_size, const char *vdev_name);