From nobody Sat Jul 12 05:03:12 2025 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1625560830401282.21773800543076; Tue, 6 Jul 2021 01:40:30 -0700 (PDT) Received: from localhost ([::1]:55870 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0gd3-0000jN-9b for importer2@patchew.org; Tue, 06 Jul 2021 04:40:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52222) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0gRz-00035d-I5 for qemu-devel@nongnu.org; Tue, 06 Jul 2021 04:29:03 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:59429) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0gRx-00039z-9D for qemu-devel@nongnu.org; Tue, 06 Jul 2021 04:29:03 -0400 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-542-AI4m0MGlNhOEyYAujsjpgw-1; Tue, 06 Jul 2021 04:28:54 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 678D0804140; Tue, 6 Jul 2021 08:28:53 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-227.pek2.redhat.com [10.72.13.227]) by smtp.corp.redhat.com (Postfix) with ESMTP id B97472EB19; Tue, 6 Jul 2021 08:28:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1625560140; 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=+ysYdL7xkz/8dJdysAt7gkNLr9hPSEVhMUOR1B+TLlE=; b=R7qSMnSXXrrz7siZm4e28p85yxTb11vGC2o5ZG2FLoGl2sWFDngphDZdGZ4ikeCR/lXvIU 6vhgxWAZSg8bzZNSp2Ci4NX9pVU/OnppGKjrg9qtStHfvzZYWm7C5BManlbZim2WGT006J 8b9AzE2COj3gYyM2HjWN1tDpYicB6x4= X-MC-Unique: AI4m0MGlNhOEyYAujsjpgw-1 From: Jason Wang To: qemu-devel@nongnu.org, mst@redhat.com, jasowang@redhat.com Subject: [PATCH V2 18/18] vhost-vdpa: multiqueue support Date: Tue, 6 Jul 2021 16:27:17 +0800 Message-Id: <20210706082717.37730-19-jasowang@redhat.com> In-Reply-To: <20210706082717.37730-1-jasowang@redhat.com> References: <20210706082717.37730-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 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: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; 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: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.442, 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=0.001, RCVD_IN_MSPIKE_WL=0.001, 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+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1625560841272100001 Content-Type: text/plain; charset="utf-8" This patch implements the multiqueue support for vhost-vdpa. This is done simply by reading the number of queue pairs from the config space and initialize the datapath and control path net client. Signed-off-by: Jason Wang --- net/vhost-vdpa.c | 104 +++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 95 insertions(+), 9 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index cc11b2ec40..01a667deb9 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -18,6 +18,7 @@ #include "qemu/error-report.h" #include "qemu/option.h" #include "qapi/error.h" +#include #include #include #include "standard-headers/linux/virtio_net.h" @@ -52,6 +53,14 @@ const int vdpa_feature_bits[] =3D { VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_MRG_RXBUF, VIRTIO_NET_F_MTU, + VIRTIO_NET_F_CTRL_RX, + VIRTIO_NET_F_CTRL_RX_EXTRA, + VIRTIO_NET_F_CTRL_VLAN, + VIRTIO_NET_F_GUEST_ANNOUNCE, + VIRTIO_NET_F_CTRL_MAC_ADDR, + VIRTIO_NET_F_RSS, + VIRTIO_NET_F_MQ, + VIRTIO_NET_F_CTRL_VQ, VIRTIO_F_IOMMU_PLATFORM, VIRTIO_F_RING_PACKED, VIRTIO_NET_F_RSS, @@ -82,7 +91,8 @@ static int vhost_vdpa_net_check_device_id(struct vhost_ne= t *net) return ret; } =20 -static int vhost_vdpa_add(NetClientState *ncs, void *be) +static int vhost_vdpa_add(NetClientState *ncs, void *be, int qp_index, + int nvqs) { VhostNetOptions options; struct vhost_net *net =3D NULL; @@ -95,7 +105,7 @@ static int vhost_vdpa_add(NetClientState *ncs, void *be) options.net_backend =3D ncs; options.opaque =3D be; options.busyloop_timeout =3D 0; - options.nvqs =3D 2; + options.nvqs =3D nvqs; =20 net =3D vhost_net_init(&options); if (!net) { @@ -159,18 +169,28 @@ static NetClientInfo net_vhost_vdpa_info =3D { static NetClientState *net_vhost_vdpa_init(NetClientState *peer, const char *device, const char *name, - int vdpa_device_fd) + int vdpa_device_fd, + int qp_index, + int nvqs, + bool is_datapath) { NetClientState *nc =3D NULL; VhostVDPAState *s; int ret =3D 0; assert(name); - nc =3D qemu_new_net_client(&net_vhost_vdpa_info, peer, device, name); + if (is_datapath) { + nc =3D qemu_new_net_client(&net_vhost_vdpa_info, peer, device, + name); + } else { + nc =3D qemu_new_net_control_client(&net_vhost_vdpa_info, peer, + device, name); + } snprintf(nc->info_str, sizeof(nc->info_str), TYPE_VHOST_VDPA); s =3D DO_UPCAST(VhostVDPAState, nc, nc); =20 s->vhost_vdpa.device_fd =3D vdpa_device_fd; - ret =3D vhost_vdpa_add(nc, (void *)&s->vhost_vdpa); + s->vhost_vdpa.index =3D qp_index; + ret =3D vhost_vdpa_add(nc, (void *)&s->vhost_vdpa, qp_index, nvqs); if (ret) { qemu_del_net_client(nc); return NULL; @@ -196,12 +216,52 @@ static int net_vhost_check_net(void *opaque, QemuOpts= *opts, Error **errp) return 0; } =20 +static int vhost_vdpa_get_max_qps(int fd, int *has_cvq, Error **errp) +{ + unsigned long config_size =3D offsetof(struct vhost_vdpa_config, buf); + struct vhost_vdpa_config *config; + __virtio16 *max_qps; + uint64_t features; + int ret; + + ret =3D ioctl(fd, VHOST_GET_FEATURES, &features); + if (ret) { + error_setg(errp, "Fail to query features from vhost-vDPA device"); + return ret; + } + + if (features & (1 << VIRTIO_NET_F_CTRL_VQ)) { + *has_cvq =3D 1; + } else { + *has_cvq =3D 0; + } + + if (features & (1 << VIRTIO_NET_F_MQ)) { + config =3D g_malloc0(config_size + sizeof(*max_qps)); + config->off =3D offsetof(struct virtio_net_config, max_virtqueue_p= airs); + config->len =3D sizeof(*max_qps); + + ret =3D ioctl(fd, VHOST_VDPA_GET_CONFIG, config); + if (ret) { + error_setg(errp, "Fail to get config from vhost-vDPA device"); + return -ret; + } + + max_qps =3D (__virtio16 *)&config->buf; + + return lduw_le_p(max_qps); + } + + return 1; +} + int net_init_vhost_vdpa(const Netdev *netdev, const char *name, NetClientState *peer, Error **errp) { const NetdevVhostVDPAOptions *opts; int vdpa_device_fd; - NetClientState *nc; + NetClientState **ncs, *nc; + int qps, i, has_cvq =3D 0; =20 assert(netdev->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); opts =3D &netdev->u.vhost_vdpa; @@ -216,11 +276,37 @@ int net_init_vhost_vdpa(const Netdev *netdev, const c= har *name, return -errno; } =20 - nc =3D net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd= ); - if (!nc) { + qps =3D vhost_vdpa_get_max_qps(vdpa_device_fd, &has_cvq, errp); + if (qps < 0) { qemu_close(vdpa_device_fd); - return -1; + return qps; + } + + ncs =3D g_malloc0(sizeof(*ncs) * qps); + + for (i =3D 0; i < qps; i++) { + ncs[i] =3D net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, + vdpa_device_fd, i, 2, true); + if (!ncs[i]) + goto err; + } + + if (has_cvq) { + nc =3D net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, + vdpa_device_fd, i, 1, false); + if (!nc) + goto err; } =20 + g_free(ncs); return 0; + +err: + if (i) { + qemu_del_net_client(ncs[0]); + } + qemu_close(vdpa_device_fd); + g_free(ncs); + + return -1; } --=20 2.25.1