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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E5366C433EF for ; Thu, 12 May 2022 05:39:44 +0000 (UTC) Received: from localhost ([::1]:48658 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1np1Y7-0006Ay-Lt for qemu-devel@archiver.kernel.org; Thu, 12 May 2022 01:39:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54938) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1np1V3-0005LS-AP for qemu-devel@nongnu.org; Thu, 12 May 2022 01:36:35 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:3811) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1np1Ux-0005Vz-FG for qemu-devel@nongnu.org; Thu, 12 May 2022 01:36:31 -0400 Received: from kwepemi500025.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4KzL8j16PVzhYqv; Thu, 12 May 2022 13:35:33 +0800 (CST) Received: from [10.174.148.223] (10.174.148.223) by kwepemi500025.china.huawei.com (7.221.188.170) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 12 May 2022 13:36:12 +0800 Message-ID: Date: Thu, 12 May 2022 13:36:11 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [PATCH v4 3/4] vdpa: add vdpa-dev support To: Jason Wang CC: Stefan Hajnoczi , mst , Stefano Garzarella , Cornelia Huck , pbonzini , "Gonglei (Arei)" , Yechuan , Huangzhichao , qemu-devel References: <20220510125834.1815-1-longpeng2@huawei.com> <20220510125834.1815-4-longpeng2@huawei.com> <86311764-35bb-3173-bd54-e18da7b60abf@huawei.com> In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.148.223] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemi500025.china.huawei.com (7.221.188.170) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.188; envelope-from=longpeng2@huawei.com; helo=szxga02-in.huawei.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, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: "Longpeng (Mike, Cloud Infrastructure Service Product Dept.)" From: longpeng2--- via 在 2022/5/11 16:55, Jason Wang 写道: > On Wed, May 11, 2022 at 2:10 PM Longpeng (Mike, Cloud Infrastructure > Service Product Dept.) wrote: >> >> >> >> 在 2022/5/11 10:56, Jason Wang 写道: >>> On Tue, May 10, 2022 at 8:59 PM Longpeng(Mike) wrote: >>>> >>>> From: Longpeng >>>> >>>> Supports vdpa-dev. >>>> >>>> Signed-off-by: Longpeng >>>> --- >>>> hw/virtio/Kconfig | 5 + >>>> hw/virtio/meson.build | 1 + >>>> hw/virtio/vdpa-dev.c | 385 +++++++++++++++++++++++++++++++++++ >>>> include/hw/virtio/vdpa-dev.h | 43 ++++ >>>> 4 files changed, 434 insertions(+) >>>> create mode 100644 hw/virtio/vdpa-dev.c >>>> create mode 100644 include/hw/virtio/vdpa-dev.h >>>> >>>> diff --git a/hw/virtio/Kconfig b/hw/virtio/Kconfig >>>> index c144d42f9b..2723283382 100644 >>>> --- a/hw/virtio/Kconfig >>>> +++ b/hw/virtio/Kconfig >>>> @@ -68,3 +68,8 @@ config VHOST_USER_RNG >>>> bool >>>> default y >>>> depends on VIRTIO && VHOST_USER >>>> + >>>> +config VHOST_VDPA_DEV >>>> + bool >>>> + default y if VIRTIO_PCI >>> >>> Do we have the plan to add VIRTIO_MMIO support? >>> >> There is currently no plan. Maybe we can try to support it in the next step. > > That would be better, allowing MMIO on top of vhost-vDPA is considered > to be one of the important advantages. > OK, I've done some simple tests, and it works fine. I'll send v5 later. >> >>>> + depends on VIRTIO && VHOST_VDPA && LINUX >>>> diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build >>>> index 67dc77e00f..8f6f86db71 100644 >>>> --- a/hw/virtio/meson.build >>>> +++ b/hw/virtio/meson.build >>>> @@ -29,6 +29,7 @@ virtio_ss.add(when: 'CONFIG_VHOST_USER_I2C', if_true: files('vhost-user-i2c.c')) >>>> virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_I2C'], if_true: files('vhost-user-i2c-pci.c')) >>>> virtio_ss.add(when: 'CONFIG_VHOST_USER_RNG', if_true: files('vhost-user-rng.c')) >>>> virtio_ss.add(when: ['CONFIG_VHOST_USER_RNG', 'CONFIG_VIRTIO_PCI'], if_true: files('vhost-user-rng-pci.c')) >>>> +virtio_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev.c')) >>>> >>>> virtio_pci_ss = ss.source_set() >>>> virtio_pci_ss.add(when: 'CONFIG_VHOST_VSOCK', if_true: files('vhost-vsock-pci.c')) >>>> diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c >>>> new file mode 100644 >>>> index 0000000000..543b5b4b81 >>>> --- /dev/null >>>> +++ b/hw/virtio/vdpa-dev.c >>>> @@ -0,0 +1,385 @@ >>>> +/* >>>> + * Vhost Vdpa Device >>>> + * >>>> + * Copyright (c) Huawei Technologies Co., Ltd. 2022. All Rights Reserved. >>>> + * >>>> + * Authors: >>>> + * Longpeng >>>> + * >>>> + * Largely based on the "vhost-user-blk-pci.c" and "vhost-user-blk.c" implemented by: >>>> + * Changpeng Liu >>>> + * >>>> + * This work is licensed under the terms of the GNU LGPL, version 2 or later. >>>> + * See the COPYING.LIB file in the top-level directory. >>>> + */ >>>> +#include "qemu/osdep.h" >>>> +#include >>>> +#include >>>> +#include "qapi/error.h" >>>> +#include "qemu/error-report.h" >>>> +#include "qemu/cutils.h" >>>> +#include "hw/qdev-core.h" >>>> +#include "hw/qdev-properties.h" >>>> +#include "hw/qdev-properties-system.h" >>>> +#include "hw/virtio/vhost.h" >>>> +#include "hw/virtio/virtio.h" >>>> +#include "hw/virtio/virtio-bus.h" >>>> +#include "hw/virtio/virtio-access.h" >>>> +#include "hw/virtio/vdpa-dev.h" >>>> +#include "sysemu/sysemu.h" >>>> +#include "sysemu/runstate.h" >>>> + >>>> +static void >>>> +vhost_vdpa_device_dummy_handle_output(VirtIODevice *vdev, VirtQueue *vq) >>>> +{ >>>> + /* Nothing to do */ >>>> +} >>>> + >>>> +static uint32_t >>>> +vhost_vdpa_device_get_u32(int fd, unsigned long int cmd, Error **errp) >>>> +{ >>>> + uint32_t val = (uint32_t)-1; >>>> + >>>> + if (ioctl(fd, cmd, &val) < 0) { >>>> + error_setg(errp, "vhost-vdpa-device: cmd 0x%lx failed: %s", >>>> + cmd, strerror(errno)); >>>> + } >>>> + >>>> + return val; >>>> +} >>>> + >>>> +static void vhost_vdpa_device_realize(DeviceState *dev, Error **errp) >>>> +{ >>>> + VirtIODevice *vdev = VIRTIO_DEVICE(dev); >>>> + VhostVdpaDevice *v = VHOST_VDPA_DEVICE(vdev); >>>> + uint16_t max_queue_size; >>>> + struct vhost_virtqueue *vqs; >>>> + int i, ret; >>>> + >>>> + if (!v->vhostdev && v->vhostfd == -1) { >>>> + error_setg(errp, "both vhostdev and vhostfd are missing"); >>>> + return; >>>> + } >>>> + >>>> + if (v->vhostdev && v->vhostfd != -1) { >>>> + error_setg(errp, "both vhostdev and vhostfd are set"); >>>> + return; >>>> + } >>>> + >>>> + if (v->vhostfd == -1) { >>>> + v->vhostfd = qemu_open(v->vhostdev, O_RDWR, errp); >>>> + if (*errp) { >>> >>> Is this better to set error messages for all the possible failures >>> during realization? >>> >> I think the error messages already set in *errp, right? > > Oh right. > >> >>>> + return; >>>> + } >>>> + } >>>> + v->vdpa.device_fd = v->vhostfd; >>>> + >>>> + v->vdev_id = vhost_vdpa_device_get_u32(v->vhostfd, >>>> + VHOST_VDPA_GET_DEVICE_ID, errp); >>>> + if (*errp) { >>>> + goto out; >>>> + } >>>> + >>>> + max_queue_size = vhost_vdpa_device_get_u32(v->vhostfd, >>>> + VHOST_VDPA_GET_VRING_NUM, errp); >>>> + if (*errp) { >>>> + goto out; >>>> + } >>>> + >>>> + if (v->queue_size > max_queue_size) { >>>> + error_setg(errp, "vhost-vdpa-device: invalid queue_size: %u (max:%u)", >>>> + v->queue_size, max_queue_size); >>>> + goto out; >>>> + } else if (!v->queue_size) { >>>> + v->queue_size = max_queue_size; >>>> + } >>>> + >>>> + v->num_queues = vhost_vdpa_device_get_u32(v->vhostfd, >>>> + VHOST_VDPA_GET_VQS_COUNT, errp); >>>> + if (*errp) { >>>> + goto out; >>>> + } >>>> + >>>> + if (!v->num_queues || v->num_queues > VIRTIO_QUEUE_MAX) { >>>> + error_setg(errp, "invalid number of virtqueues: %u (max:%u)", >>>> + v->num_queues, VIRTIO_QUEUE_MAX); >>>> + goto out; >>>> + } >>>> + >>>> + v->dev.nvqs = v->num_queues; >>>> + vqs = g_new0(struct vhost_virtqueue, v->dev.nvqs); >>>> + v->dev.vqs = vqs; >>>> + v->dev.vq_index = 0; >>>> + v->dev.vq_index_end = v->dev.nvqs; >>>> + v->dev.backend_features = 0; >>>> + v->started = false; >>>> + >>>> + ret = vhost_dev_init(&v->dev, &v->vdpa, VHOST_BACKEND_TYPE_VDPA, 0, NULL); >>>> + if (ret < 0) { >>>> + error_setg(errp, "vhost-vdpa-device: vhost initialization failed: %s", >>>> + strerror(-ret)); >>>> + goto free_vqs; >>>> + } >>>> + >>>> + v->config_size = vhost_vdpa_device_get_u32(v->vhostfd, >>>> + VHOST_VDPA_GET_CONFIG_SIZE, errp); >>>> + if (*errp) { >>>> + goto vhost_cleanup; >>>> + } >>>> + >>>> + if (v->post_init && v->post_init(v, errp) < 0) { >>>> + goto free_virtio; >>>> + } >>>> + >>>> + v->config = g_malloc0(v->config_size); >>>> + >>>> + ret = vhost_dev_get_config(&v->dev, v->config, v->config_size, NULL); >>>> + if (ret < 0) { >>>> + error_setg(errp, "vhost-vdpa-device: get config failed"); >>>> + goto free_config; >>>> + } >>>> + >>>> + virtio_init(vdev, "vhost-vdpa", v->vdev_id, v->config_size); >>>> + >>>> + v->virtqs = g_new0(VirtQueue *, v->dev.nvqs); >>>> + for (i = 0; i < v->dev.nvqs; i++) { >>>> + v->virtqs[i] = virtio_add_queue(vdev, v->queue_size, >>>> + vhost_vdpa_device_dummy_handle_output); >>>> + } >>>> + >>>> + return; >>>> + >>>> +free_virtio: >>>> + for (i = 0; i < v->num_queues; i++) { >>>> + virtio_delete_queue(v->virtqs[i]); >>>> + } >>>> + g_free(v->virtqs); >>>> + virtio_cleanup(vdev); >>>> +free_config: >>>> + g_free(v->config); >>>> +vhost_cleanup: >>>> + vhost_dev_cleanup(&v->dev); >>>> +free_vqs: >>>> + g_free(vqs); >>>> +out: >>>> + qemu_close(v->vhostfd); >>>> + v->vhostfd = -1; >>>> +} >>>> + >>>> +static void vhost_vdpa_device_unrealize(DeviceState *dev) >>>> +{ >>>> + VirtIODevice *vdev = VIRTIO_DEVICE(dev); >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + int i; >>>> + >>>> + virtio_set_status(vdev, 0); >>>> + >>>> + for (i = 0; i < s->num_queues; i++) { >>>> + virtio_delete_queue(s->virtqs[i]); >>>> + } >>>> + g_free(s->virtqs); >>>> + virtio_cleanup(vdev); >>>> + >>>> + g_free(s->config); >>>> + g_free(s->dev.vqs); >>>> + vhost_dev_cleanup(&s->dev); >>>> + qemu_close(s->vhostfd); >>>> + s->vhostfd = -1; >>>> +} >>>> + >>>> +static void >>>> +vhost_vdpa_device_get_config(VirtIODevice *vdev, uint8_t *config) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + >>>> + memcpy(config, s->config, s->config_size); >>>> +} >>>> + >>>> +static void >>>> +vhost_vdpa_device_set_config(VirtIODevice *vdev, const uint8_t *config) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + int ret; >>>> + >>>> + ret = vhost_dev_set_config(&s->dev, s->config, 0, s->config_size, >>>> + VHOST_SET_CONFIG_TYPE_MASTER); >>>> + if (ret) { >>>> + error_report("set device config space failed"); >>>> + return; >>>> + } >>>> +} >>>> + >>>> +static uint64_t vhost_vdpa_device_get_features(VirtIODevice *vdev, >>>> + uint64_t features, >>>> + Error **errp) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + uint64_t backend_features = s->dev.features; >>>> + >>>> + if (!virtio_has_feature(features, VIRTIO_F_IOMMU_PLATFORM)) { >>>> + virtio_clear_feature(&backend_features, VIRTIO_F_IOMMU_PLATFORM); >>>> + } >>>> + >>>> + return backend_features; >>>> +} >>>> + >>>> +static int vhost_vdpa_device_start(VirtIODevice *vdev, Error **errp) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); >>>> + VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); >>>> + int i, ret; >>>> + >>>> + if (!k->set_guest_notifiers) { >>>> + error_setg(errp, "binding does not support guest notifiers"); >>>> + return -ENOSYS; >>>> + } >>>> + >>>> + ret = vhost_dev_enable_notifiers(&s->dev, vdev); >>>> + if (ret < 0) { >>>> + error_setg_errno(errp, -ret, "Error enabling host notifiers"); >>>> + return ret; >>>> + } >>>> + >>>> + ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, true); >>>> + if (ret < 0) { >>>> + error_setg_errno(errp, -ret, "Error binding guest notifier"); >>>> + goto err_host_notifiers; >>>> + } >>>> + >>>> + s->dev.acked_features = vdev->guest_features; >>>> + >>>> + ret = vhost_dev_start(&s->dev, vdev); >>>> + if (ret < 0) { >>>> + error_setg_errno(errp, -ret, "Error starting vhost"); >>>> + goto err_guest_notifiers; >>>> + } >>>> + s->started = true; >>>> + >>>> + /* >>>> + * guest_notifier_mask/pending not used yet, so just unmask >>>> + * everything here. virtio-pci will do the right thing by >>>> + * enabling/disabling irqfd. >>>> + */ >>>> + for (i = 0; i < s->dev.nvqs; i++) { >>>> + vhost_virtqueue_mask(&s->dev, vdev, i, false); >>>> + } >>>> + >>>> + return ret; >>>> + >>>> +err_guest_notifiers: >>>> + k->set_guest_notifiers(qbus->parent, s->dev.nvqs, false); >>>> +err_host_notifiers: >>>> + vhost_dev_disable_notifiers(&s->dev, vdev); >>>> + return ret; >>>> +} >>>> + >>>> +static void vhost_vdpa_device_stop(VirtIODevice *vdev) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); >>>> + VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); >>>> + int ret; >>>> + >>>> + if (!s->started) { >>>> + return; >>>> + } >>>> + s->started = false; >>>> + >>>> + if (!k->set_guest_notifiers) { >>>> + return; >>>> + } >>>> + >>>> + vhost_dev_stop(&s->dev, vdev); >>>> + >>>> + ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, false); >>>> + if (ret < 0) { >>>> + error_report("vhost guest notifier cleanup failed: %d", ret); >>>> + return; >>>> + } >>>> + >>>> + vhost_dev_disable_notifiers(&s->dev, vdev); >>>> +} >>>> + >>>> +static void vhost_vdpa_device_set_status(VirtIODevice *vdev, uint8_t status) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(vdev); >>>> + bool should_start = virtio_device_started(vdev, status); >>>> + Error *local_err = NULL; >>>> + int ret; >>>> + >>>> + if (!vdev->vm_running) { >>>> + should_start = false; >>>> + } >>>> + >>>> + if (s->started == should_start) { >>>> + return; >>>> + } >>>> + >>>> + if (should_start) { >>>> + ret = vhost_vdpa_device_start(vdev, &local_err); >>>> + if (ret < 0) { >>>> + error_reportf_err(local_err, "vhost-vdpa-device: start failed: "); >>>> + } >>>> + } else { >>>> + vhost_vdpa_device_stop(vdev); >>>> + } >>>> +} >>>> + >>>> +static Property vhost_vdpa_device_properties[] = { >>>> + DEFINE_PROP_STRING("vhostdev", VhostVdpaDevice, vhostdev), >>>> + DEFINE_PROP_INT32("vhostfd", VhostVdpaDevice, vhostfd, -1), >>> >>> This is probably not needed since we can "abuse" /dev/fd/X for vhostdev. >>> >> It seems "vhostdev" is enough. I prefer to remove "vhostfd" if there is >> no objection. > > Yes, it is the way the current vhost-vDPA networking backend did. > > Thanks > >> >> Thanks. >> >>> Thanks >>> >>>> + DEFINE_PROP_UINT16("queue-size", VhostVdpaDevice, queue_size, 0), >>>> + DEFINE_PROP_END_OF_LIST(), >>>> +}; >>>> + >>>> +static const VMStateDescription vmstate_vhost_vdpa_device = { >>>> + .name = "vhost-vdpa-device", >>>> + .unmigratable = 1, >>>> + .minimum_version_id = 1, >>>> + .version_id = 1, >>>> + .fields = (VMStateField[]) { >>>> + VMSTATE_VIRTIO_DEVICE, >>>> + VMSTATE_END_OF_LIST() >>>> + }, >>>> +}; >>>> + >>>> +static void vhost_vdpa_device_class_init(ObjectClass *klass, void *data) >>>> +{ >>>> + DeviceClass *dc = DEVICE_CLASS(klass); >>>> + VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); >>>> + >>>> + device_class_set_props(dc, vhost_vdpa_device_properties); >>>> + dc->desc = "VDPA-based generic device assignment"; >>>> + dc->vmsd = &vmstate_vhost_vdpa_device; >>>> + set_bit(DEVICE_CATEGORY_MISC, dc->categories); >>>> + vdc->realize = vhost_vdpa_device_realize; >>>> + vdc->unrealize = vhost_vdpa_device_unrealize; >>>> + vdc->get_config = vhost_vdpa_device_get_config; >>>> + vdc->set_config = vhost_vdpa_device_set_config; >>>> + vdc->get_features = vhost_vdpa_device_get_features; >>>> + vdc->set_status = vhost_vdpa_device_set_status; >>>> +} >>>> + >>>> +static void vhost_vdpa_device_instance_init(Object *obj) >>>> +{ >>>> + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(obj); >>>> + >>>> + device_add_bootindex_property(obj, &s->bootindex, "bootindex", >>>> + NULL, DEVICE(obj)); >>>> +} >>>> + >>>> +static const TypeInfo vhost_vdpa_device_info = { >>>> + .name = TYPE_VHOST_VDPA_DEVICE, >>>> + .parent = TYPE_VIRTIO_DEVICE, >>>> + .instance_size = sizeof(VhostVdpaDevice), >>>> + .class_init = vhost_vdpa_device_class_init, >>>> + .instance_init = vhost_vdpa_device_instance_init, >>>> +}; >>>> + >>>> +static void register_vhost_vdpa_device_type(void) >>>> +{ >>>> + type_register_static(&vhost_vdpa_device_info); >>>> +} >>>> + >>>> +type_init(register_vhost_vdpa_device_type); >>>> diff --git a/include/hw/virtio/vdpa-dev.h b/include/hw/virtio/vdpa-dev.h >>>> new file mode 100644 >>>> index 0000000000..4dbf98195c >>>> --- /dev/null >>>> +++ b/include/hw/virtio/vdpa-dev.h >>>> @@ -0,0 +1,43 @@ >>>> +/* >>>> + * Vhost Vdpa Device >>>> + * >>>> + * Copyright (c) Huawei Technologies Co., Ltd. 2022. All Rights Reserved. >>>> + * >>>> + * Authors: >>>> + * Longpeng >>>> + * >>>> + * Largely based on the "vhost-user-blk.h" implemented by: >>>> + * Changpeng Liu >>>> + * >>>> + * This work is licensed under the terms of the GNU LGPL, version 2 or later. >>>> + * See the COPYING.LIB file in the top-level directory. >>>> + */ >>>> +#ifndef _VHOST_VDPA_DEVICE_H >>>> +#define _VHOST_VDPA_DEVICE_H >>>> + >>>> +#include "hw/virtio/vhost.h" >>>> +#include "hw/virtio/vhost-vdpa.h" >>>> +#include "qom/object.h" >>>> + >>>> + >>>> +#define TYPE_VHOST_VDPA_DEVICE "vhost-vdpa-device" >>>> +OBJECT_DECLARE_SIMPLE_TYPE(VhostVdpaDevice, VHOST_VDPA_DEVICE) >>>> + >>>> +struct VhostVdpaDevice { >>>> + VirtIODevice parent_obj; >>>> + char *vhostdev; >>>> + int vhostfd; >>>> + int32_t bootindex; >>>> + uint32_t vdev_id; >>>> + uint32_t num_queues; >>>> + struct vhost_dev dev; >>>> + struct vhost_vdpa vdpa; >>>> + VirtQueue **virtqs; >>>> + uint8_t *config; >>>> + int config_size; >>>> + uint16_t queue_size; >>>> + bool started; >>>> + int (*post_init)(VhostVdpaDevice *v, Error **errp); >>>> +}; >>>> + >>>> +#endif >>>> -- >>>> 2.23.0 >>>> >>> >>> . >> > > .