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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7503C433EF for ; Mon, 11 Oct 2021 04:31:30 +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 5A4C060F23 for ; Mon, 11 Oct 2021 04:31:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5A4C060F23 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:32998 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mZmyH-0004Dk-FT for qemu-devel@archiver.kernel.org; Mon, 11 Oct 2021 00:31:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44686) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mZmwK-0001Qk-UZ for qemu-devel@nongnu.org; Mon, 11 Oct 2021 00:29:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:33425) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mZmwJ-0004FX-6U for qemu-devel@nongnu.org; Mon, 11 Oct 2021 00:29:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633926566; 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=6mEcYZce6yQ/6txHfoWBZebvqIm5VQSTiQU0zF5oJ/A=; b=Eec3SlzY3BohDq5VvsR1DjcTbxIaoqaddYO93OaA5zdvJNtRfjDTGpwFCg8ACtN8oYBPgF 9LdLvRPA2n+QockzjYy5+PyuKN98OxP7TXBH5ebovUrhJ/+Drqi/7ebJsNqmIeXO088jRI AwWwZUCsU4G4vwxG8RTrgMVOVYlDG1A= 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-312-FgTfUTaJOtK39XafpBELmQ-1; Mon, 11 Oct 2021 00:29:22 -0400 X-MC-Unique: FgTfUTaJOtK39XafpBELmQ-1 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 C23A910A8E08; Mon, 11 Oct 2021 04:29:21 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-160.pek2.redhat.com [10.72.13.160]) by smtp.corp.redhat.com (Postfix) with ESMTP id DA1A41F6; Mon, 11 Oct 2021 04:29:18 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH V4 10/10] vhost-vdpa: multiqueue support Date: Mon, 11 Oct 2021 12:28:29 +0800 Message-Id: <20211011042829.4159-11-jasowang@redhat.com> In-Reply-To: <20211011042829.4159-1-jasowang@redhat.com> References: <20211011042829.4159-1-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: 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: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.049, 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_H2=-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, gdawar@xilinx.com, lingshan.zhu@intel.com, lulu@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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 Message-Id: <20210907090322.1756-11-jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/virtio/vhost-vdpa.c | 2 +- net/vhost-vdpa.c | 105 +++++++++++++++++++++++++++++++++++++---- 2 files changed, 97 insertions(+), 10 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 8587d30918..f9acfe9bdb 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -590,7 +590,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); } - if (vhost_vdpa_one_time_request(dev)) { + if (dev->vq_index + dev->nvqs != dev->last_index) { return 0; } diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 834dab28dd..533b15ae8c 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" @@ -51,6 +52,14 @@ const int vdpa_feature_bits[] = { 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, @@ -81,7 +90,8 @@ static int vhost_vdpa_net_check_device_id(struct vhost_net *net) return ret; } -static int vhost_vdpa_add(NetClientState *ncs, void *be) +static int vhost_vdpa_add(NetClientState *ncs, void *be, + int queue_pair_index, int nvqs) { VhostNetOptions options; struct vhost_net *net = NULL; @@ -94,7 +104,7 @@ static int vhost_vdpa_add(NetClientState *ncs, void *be) options.net_backend = ncs; options.opaque = be; options.busyloop_timeout = 0; - options.nvqs = 2; + options.nvqs = nvqs; net = vhost_net_init(&options); if (!net) { @@ -158,18 +168,28 @@ static NetClientInfo net_vhost_vdpa_info = { static NetClientState *net_vhost_vdpa_init(NetClientState *peer, const char *device, const char *name, - int vdpa_device_fd) + int vdpa_device_fd, + int queue_pair_index, + int nvqs, + bool is_datapath) { NetClientState *nc = NULL; VhostVDPAState *s; int ret = 0; assert(name); - nc = qemu_new_net_client(&net_vhost_vdpa_info, peer, device, name); + if (is_datapath) { + nc = qemu_new_net_client(&net_vhost_vdpa_info, peer, device, + name); + } else { + nc = qemu_new_net_control_client(&net_vhost_vdpa_info, peer, + device, name); + } snprintf(nc->info_str, sizeof(nc->info_str), TYPE_VHOST_VDPA); s = DO_UPCAST(VhostVDPAState, nc, nc); s->vhost_vdpa.device_fd = vdpa_device_fd; - ret = vhost_vdpa_add(nc, (void *)&s->vhost_vdpa); + s->vhost_vdpa.index = queue_pair_index; + ret = vhost_vdpa_add(nc, (void *)&s->vhost_vdpa, queue_pair_index, nvqs); if (ret) { qemu_del_net_client(nc); return NULL; @@ -195,12 +215,52 @@ static int net_vhost_check_net(void *opaque, QemuOpts *opts, Error **errp) return 0; } +static int vhost_vdpa_get_max_queue_pairs(int fd, int *has_cvq, Error **errp) +{ + unsigned long config_size = offsetof(struct vhost_vdpa_config, buf); + struct vhost_vdpa_config *config; + __virtio16 *max_queue_pairs; + uint64_t features; + int ret; + + ret = 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 = 1; + } else { + *has_cvq = 0; + } + + if (features & (1 << VIRTIO_NET_F_MQ)) { + config = g_malloc0(config_size + sizeof(*max_queue_pairs)); + config->off = offsetof(struct virtio_net_config, max_virtqueue_pairs); + config->len = sizeof(*max_queue_pairs); + + ret = ioctl(fd, VHOST_VDPA_GET_CONFIG, config); + if (ret) { + error_setg(errp, "Fail to get config from vhost-vDPA device"); + return -ret; + } + + max_queue_pairs = (__virtio16 *)&config->buf; + + return lduw_le_p(max_queue_pairs); + } + + 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 queue_pairs, i, has_cvq = 0; assert(netdev->type == NET_CLIENT_DRIVER_VHOST_VDPA); opts = &netdev->u.vhost_vdpa; @@ -215,11 +275,38 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name, return -errno; } - nc = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd); - if (!nc) { + queue_pairs = vhost_vdpa_get_max_queue_pairs(vdpa_device_fd, + &has_cvq, errp); + if (queue_pairs < 0) { qemu_close(vdpa_device_fd); - return -1; + return queue_pairs; + } + + ncs = g_malloc0(sizeof(*ncs) * queue_pairs); + + for (i = 0; i < queue_pairs; i++) { + ncs[i] = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, + vdpa_device_fd, i, 2, true); + if (!ncs[i]) + goto err; + } + + if (has_cvq) { + nc = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, + vdpa_device_fd, i, 1, false); + if (!nc) + goto err; } + g_free(ncs); return 0; + +err: + if (i) { + qemu_del_net_client(ncs[0]); + } + qemu_close(vdpa_device_fd); + g_free(ncs); + + return -1; } -- 2.25.1