From mboxrd@z Thu Jan 1 00:00:00 1970 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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 66F62C48BE5 for ; Mon, 21 Jun 2021 04:26:05 +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 0335B60C3E for ; Mon, 21 Jun 2021 04:26:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0335B60C3E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:55252 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lvBVc-0006Km-1c for qemu-devel@archiver.kernel.org; Mon, 21 Jun 2021 00:26:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59424) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lvBNv-0003PT-R7 for qemu-devel@nongnu.org; Mon, 21 Jun 2021 00:18:07 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:27185) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lvBNs-0001WI-Qf for qemu-devel@nongnu.org; Mon, 21 Jun 2021 00:18:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624249084; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HYgcXQi5/X2iCmmOVmEJ0he1Lp+nbfxU+v0Xfq2+NKs=; b=hTnzO35PTQD4WhaGMOG95+NKR+1YZVnVtemx5SUt37MTJ81VMGxh2m3wm8Tk0sKhQwgB5O nEqkpGwLVLMgJXCYSlQ2rTemsa//n+2Gx45Pl1oHdHOKvTRavEk7J73jYp5kNUxB+YjqT3 EDUqUNlvp3pX/UFMvciJIth96sO1nfA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-468-A3J9Hv67NMeXXjRVkm_4hQ-1; Mon, 21 Jun 2021 00:17:59 -0400 X-MC-Unique: A3J9Hv67NMeXXjRVkm_4hQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 61CA7802C80; Mon, 21 Jun 2021 04:17:58 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-217.pek2.redhat.com [10.72.12.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id CA65B60938; Mon, 21 Jun 2021 04:17:52 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH 15/18] vhost-net: control virtqueue support Date: Mon, 21 Jun 2021 12:16:47 +0800 Message-Id: <20210621041650.5826-16-jasowang@redhat.com> In-Reply-To: <20210621041650.5826-1-jasowang@redhat.com> References: <20210621041650.5826-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.133.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.299, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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: eperezma@redhat.com, elic@nvidia.com, lingshan.zhu@intel.com, lulu@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We assume there's no cvq in the past, this is not true when we need control virtqueue support for vhost-user backends. So this patch implements the control virtqueue support for vhost-net. As datapath, the control virtqueue is also required to be coupled with the NetClientState. The vhost_net_start/stop() are tweaked to accept the number of datapath queue pairs plus the the number of control virtqueue for us to start and stop the vhost device. Signed-off-by: Jason Wang --- hw/net/vhost_net.c | 43 ++++++++++++++++++++++++++++++----------- hw/net/virtio-net.c | 4 ++-- include/net/vhost_net.h | 6 ++++-- 3 files changed, 38 insertions(+), 15 deletions(-) diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index ef1370bd92..fe2fd7e3d5 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -311,11 +311,14 @@ static void vhost_net_stop_one(struct vhost_net *net, } int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, - int total_queues) + int data_qps, int cvq) { BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev))); VirtioBusState *vbus = VIRTIO_BUS(qbus); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus); + int total_notifiers = data_qps * 2 + cvq; + VirtIONet *n = VIRTIO_NET(dev); + int nvhosts = data_qps + cvq; struct vhost_net *net; int r, e, i; NetClientState *peer; @@ -325,9 +328,14 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, return -ENOSYS; } - for (i = 0; i < total_queues; i++) { + for (i = 0; i < nvhosts; i++) { + + if (i < data_qps) { + peer = qemu_get_peer(ncs, i); + } else { /* Control Virtqueue */ + peer = qemu_get_peer(ncs, n->max_qps); + } - peer = qemu_get_peer(ncs, i); net = get_vhost_net(peer); vhost_net_set_vq_index(net, i * 2); @@ -340,14 +348,18 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, } } - r = k->set_guest_notifiers(qbus->parent, total_queues * 2, true); + r = k->set_guest_notifiers(qbus->parent, total_notifiers, true); if (r < 0) { error_report("Error binding guest notifier: %d", -r); goto err; } - for (i = 0; i < total_queues; i++) { - peer = qemu_get_peer(ncs, i); + for (i = 0; i < nvhosts; i++) { + if (i < data_qps) { + peer = qemu_get_peer(ncs, i); + } else { + peer = qemu_get_peer(ncs, n->max_qps); + } r = vhost_net_start_one(get_vhost_net(peer), dev); if (r < 0) { @@ -371,7 +383,7 @@ err_start: peer = qemu_get_peer(ncs , i); vhost_net_stop_one(get_vhost_net(peer), dev); } - e = k->set_guest_notifiers(qbus->parent, total_queues * 2, false); + e = k->set_guest_notifiers(qbus->parent, total_notifiers, false); if (e < 0) { fprintf(stderr, "vhost guest notifier cleanup failed: %d\n", e); fflush(stderr); @@ -381,18 +393,27 @@ err: } void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs, - int total_queues) + int data_qps, int cvq) { BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev))); VirtioBusState *vbus = VIRTIO_BUS(qbus); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus); + VirtIONet *n = VIRTIO_NET(dev); + NetClientState *peer; + int total_notifiers = data_qps * 2 + cvq; + int nvhosts = data_qps + cvq; int i, r; - for (i = 0; i < total_queues; i++) { - vhost_net_stop_one(get_vhost_net(ncs[i].peer), dev); + for (i = 0; i < nvhosts; i++) { + if (i < data_qps) { + peer = qemu_get_peer(ncs, i); + } else { + peer = qemu_get_peer(ncs, n->max_qps); + } + vhost_net_stop_one(get_vhost_net(peer), dev); } - r = k->set_guest_notifiers(qbus->parent, total_queues * 2, false); + r = k->set_guest_notifiers(qbus->parent, total_notifiers, false); if (r < 0) { fprintf(stderr, "vhost guest notifier cleanup failed: %d\n", r); fflush(stderr); diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index bd7958b9f0..614660274c 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -285,14 +285,14 @@ static void virtio_net_vhost_status(VirtIONet *n, uint8_t status) } n->vhost_started = 1; - r = vhost_net_start(vdev, n->nic->ncs, queues); + r = vhost_net_start(vdev, n->nic->ncs, queues, 0); if (r < 0) { error_report("unable to start vhost net: %d: " "falling back on userspace virtio", -r); n->vhost_started = 0; } } else { - vhost_net_stop(vdev, n->nic->ncs, queues); + vhost_net_stop(vdev, n->nic->ncs, queues, 0); n->vhost_started = 0; } } diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index fba40cf695..e656e38af9 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -21,8 +21,10 @@ typedef struct VhostNetOptions { uint64_t vhost_net_get_max_queues(VHostNetState *net); struct vhost_net *vhost_net_init(VhostNetOptions *options); -int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, int total_queues); -void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs, int total_queues); +int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, + int data_qps, int cvq); +void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs, + int data_qps, int cvq); void vhost_net_cleanup(VHostNetState *net); -- 2.25.1