From c6136ec0c6fea0db638de08720018fd4bc777787 Mon Sep 17 00:00:00 2001 From: Stefano Garzarella Date: Fri, 22 May 2020 14:25:10 +0200 Subject: [PATCH] vhost-vsock: add vhost-vsock-common abstraction This patch prepares the introduction of vhost-user-vsock, moving the common code usable for both vhost-vsock and vhost-user-vsock devices, in the new vhost-vsock-common parent class. While moving the code, fixed checkpatch warnings about block comments. Signed-off-by: Stefano Garzarella Message-Id: <20200522122512.87413-2-sgarzare@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/virtio/Makefile.objs | 2 +- hw/virtio/vhost-vsock-common.c | 258 ++++++++++++++++++++++ hw/virtio/vhost-vsock.c | 283 ++++--------------------- include/hw/virtio/vhost-vsock-common.h | 47 ++++ include/hw/virtio/vhost-vsock.h | 11 +- 5 files changed, 350 insertions(+), 251 deletions(-) create mode 100644 hw/virtio/vhost-vsock-common.c create mode 100644 include/hw/virtio/vhost-vsock-common.h diff --git a/hw/virtio/Makefile.objs b/hw/virtio/Makefile.objs index 4e4d39a0a4..b1eeb44eac 100644 --- a/hw/virtio/Makefile.objs +++ b/hw/virtio/Makefile.objs @@ -17,7 +17,7 @@ obj-$(CONFIG_VIRTIO_PMEM) += virtio-pmem.o common-obj-$(call land,$(CONFIG_VIRTIO_PMEM),$(CONFIG_VIRTIO_PCI)) += virtio-pmem-pci.o obj-$(call land,$(CONFIG_VHOST_USER_FS),$(CONFIG_VIRTIO_PCI)) += vhost-user-fs-pci.o obj-$(CONFIG_VIRTIO_IOMMU) += virtio-iommu.o -obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock.o +obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock-common.o vhost-vsock.o ifeq ($(CONFIG_VIRTIO_PCI),y) obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock-pci.o diff --git a/hw/virtio/vhost-vsock-common.c b/hw/virtio/vhost-vsock-common.c new file mode 100644 index 0000000000..5b2ebf3496 --- /dev/null +++ b/hw/virtio/vhost-vsock-common.c @@ -0,0 +1,258 @@ +/* + * Parent class for vhost-vsock devices + * + * Copyright 2015-2020 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#include "qemu/osdep.h" +#include "standard-headers/linux/virtio_vsock.h" +#include "qapi/error.h" +#include "hw/virtio/virtio-access.h" +#include "qemu/error-report.h" +#include "hw/qdev-properties.h" +#include "hw/virtio/vhost-vsock.h" +#include "qemu/iov.h" +#include "monitor/monitor.h" + +int vhost_vsock_common_start(VirtIODevice *vdev) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); + VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); + int ret; + int i; + + if (!k->set_guest_notifiers) { + error_report("binding does not support guest notifiers"); + return -ENOSYS; + } + + ret = vhost_dev_enable_notifiers(&vvc->vhost_dev, vdev); + if (ret < 0) { + error_report("Error enabling host notifiers: %d", -ret); + return ret; + } + + ret = k->set_guest_notifiers(qbus->parent, vvc->vhost_dev.nvqs, true); + if (ret < 0) { + error_report("Error binding guest notifier: %d", -ret); + goto err_host_notifiers; + } + + vvc->vhost_dev.acked_features = vdev->guest_features; + ret = vhost_dev_start(&vvc->vhost_dev, vdev); + if (ret < 0) { + error_report("Error starting vhost: %d", -ret); + goto err_guest_notifiers; + } + + /* + * 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 < vvc->vhost_dev.nvqs; i++) { + vhost_virtqueue_mask(&vvc->vhost_dev, vdev, i, false); + } + + return 0; + +err_guest_notifiers: + k->set_guest_notifiers(qbus->parent, vvc->vhost_dev.nvqs, false); +err_host_notifiers: + vhost_dev_disable_notifiers(&vvc->vhost_dev, vdev); + return ret; +} + +void vhost_vsock_common_stop(VirtIODevice *vdev) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); + VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); + int ret; + + if (!k->set_guest_notifiers) { + return; + } + + vhost_dev_stop(&vvc->vhost_dev, vdev); + + ret = k->set_guest_notifiers(qbus->parent, vvc->vhost_dev.nvqs, false); + if (ret < 0) { + error_report("vhost guest notifier cleanup failed: %d", ret); + return; + } + + vhost_dev_disable_notifiers(&vvc->vhost_dev, vdev); +} + + +static void vhost_vsock_common_handle_output(VirtIODevice *vdev, VirtQueue *vq) +{ + /* Do nothing */ +} + +static void vhost_vsock_common_guest_notifier_mask(VirtIODevice *vdev, int idx, + bool mask) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + + vhost_virtqueue_mask(&vvc->vhost_dev, vdev, idx, mask); +} + +static bool vhost_vsock_common_guest_notifier_pending(VirtIODevice *vdev, + int idx) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + + return vhost_virtqueue_pending(&vvc->vhost_dev, idx); +} + +static void vhost_vsock_common_send_transport_reset(VHostVSockCommon *vvc) +{ + VirtQueueElement *elem; + VirtQueue *vq = vvc->event_vq; + struct virtio_vsock_event event = { + .id = cpu_to_le32(VIRTIO_VSOCK_EVENT_TRANSPORT_RESET), + }; + + elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); + if (!elem) { + error_report("vhost-vsock missed transport reset event"); + return; + } + + if (elem->out_num) { + error_report("invalid vhost-vsock event virtqueue element with " + "out buffers"); + goto out; + } + + if (iov_from_buf(elem->in_sg, elem->in_num, 0, + &event, sizeof(event)) != sizeof(event)) { + error_report("vhost-vsock event virtqueue element is too short"); + goto out; + } + + virtqueue_push(vq, elem, sizeof(event)); + virtio_notify(VIRTIO_DEVICE(vvc), vq); + +out: + g_free(elem); +} + +static void vhost_vsock_common_post_load_timer_cleanup(VHostVSockCommon *vvc) +{ + if (!vvc->post_load_timer) { + return; + } + + timer_del(vvc->post_load_timer); + timer_free(vvc->post_load_timer); + vvc->post_load_timer = NULL; +} + +static void vhost_vsock_common_post_load_timer_cb(void *opaque) +{ + VHostVSockCommon *vvc = opaque; + + vhost_vsock_common_post_load_timer_cleanup(vvc); + vhost_vsock_common_send_transport_reset(vvc); +} + +int vhost_vsock_common_pre_save(void *opaque) +{ + VHostVSockCommon *vvc = opaque; + + /* + * At this point, backend must be stopped, otherwise + * it might keep writing to memory. + */ + assert(!vvc->vhost_dev.started); + + return 0; +} + +int vhost_vsock_common_post_load(void *opaque, int version_id) +{ + VHostVSockCommon *vvc = opaque; + VirtIODevice *vdev = VIRTIO_DEVICE(vvc); + + if (virtio_queue_get_addr(vdev, 2)) { + /* + * Defer transport reset event to a vm clock timer so that virtqueue + * changes happen after migration has completed. + */ + assert(!vvc->post_load_timer); + vvc->post_load_timer = + timer_new_ns(QEMU_CLOCK_VIRTUAL, + vhost_vsock_common_post_load_timer_cb, + vvc); + timer_mod(vvc->post_load_timer, 1); + } + return 0; +} + +void vhost_vsock_common_realize(VirtIODevice *vdev, const char *name) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + + virtio_init(vdev, name, VIRTIO_ID_VSOCK, + sizeof(struct virtio_vsock_config)); + + /* Receive and transmit queues belong to vhost */ + vvc->recv_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, + vhost_vsock_common_handle_output); + vvc->trans_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, + vhost_vsock_common_handle_output); + + /* The event queue belongs to QEMU */ + vvc->event_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, + vhost_vsock_common_handle_output); + + vvc->vhost_dev.nvqs = ARRAY_SIZE(vvc->vhost_vqs); + vvc->vhost_dev.vqs = vvc->vhost_vqs; + + vvc->post_load_timer = NULL; +} + +void vhost_vsock_common_unrealize(VirtIODevice *vdev) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + + vhost_vsock_common_post_load_timer_cleanup(vvc); + + virtio_delete_queue(vvc->recv_vq); + virtio_delete_queue(vvc->trans_vq); + virtio_delete_queue(vvc->event_vq); + virtio_cleanup(vdev); +} + +static void vhost_vsock_common_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + vdc->guest_notifier_mask = vhost_vsock_common_guest_notifier_mask; + vdc->guest_notifier_pending = vhost_vsock_common_guest_notifier_pending; +} + +static const TypeInfo vhost_vsock_common_info = { + .name = TYPE_VHOST_VSOCK_COMMON, + .parent = TYPE_VIRTIO_DEVICE, + .instance_size = sizeof(VHostVSockCommon), + .class_init = vhost_vsock_common_class_init, + .abstract = true, +}; + +static void vhost_vsock_common_register_types(void) +{ + type_register_static(&vhost_vsock_common_info); +} + +type_init(vhost_vsock_common_register_types) diff --git a/hw/virtio/vhost-vsock.c b/hw/virtio/vhost-vsock.c index 4a228f5168..c8f0699b4f 100644 --- a/hw/virtio/vhost-vsock.c +++ b/hw/virtio/vhost-vsock.c @@ -12,24 +12,14 @@ */ #include "qemu/osdep.h" -#include #include "standard-headers/linux/virtio_vsock.h" #include "qapi/error.h" -#include "hw/virtio/virtio-bus.h" #include "hw/virtio/virtio-access.h" #include "qemu/error-report.h" #include "hw/qdev-properties.h" #include "hw/virtio/vhost-vsock.h" -#include "qemu/iov.h" -#include "qemu/module.h" #include "monitor/monitor.h" -enum { - VHOST_VSOCK_SAVEVM_VERSION = 0, - - VHOST_VSOCK_QUEUE_SIZE = 128, -}; - static void vhost_vsock_get_config(VirtIODevice *vdev, uint8_t *config) { VHostVSock *vsock = VHOST_VSOCK(vdev); @@ -39,16 +29,18 @@ static void vhost_vsock_get_config(VirtIODevice *vdev, uint8_t *config) memcpy(config, &vsockcfg, sizeof(vsockcfg)); } -static int vhost_vsock_set_guest_cid(VHostVSock *vsock) +static int vhost_vsock_set_guest_cid(VirtIODevice *vdev) { - const VhostOps *vhost_ops = vsock->vhost_dev.vhost_ops; + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + VHostVSock *vsock = VHOST_VSOCK(vdev); + const VhostOps *vhost_ops = vvc->vhost_dev.vhost_ops; int ret; if (!vhost_ops->vhost_vsock_set_guest_cid) { return -ENOSYS; } - ret = vhost_ops->vhost_vsock_set_guest_cid(&vsock->vhost_dev, + ret = vhost_ops->vhost_vsock_set_guest_cid(&vvc->vhost_dev, vsock->conf.guest_cid); if (ret < 0) { return -errno; @@ -56,123 +48,58 @@ static int vhost_vsock_set_guest_cid(VHostVSock *vsock) return 0; } -static int vhost_vsock_set_running(VHostVSock *vsock, int start) +static int vhost_vsock_set_running(VirtIODevice *vdev, int start) { - const VhostOps *vhost_ops = vsock->vhost_dev.vhost_ops; + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + const VhostOps *vhost_ops = vvc->vhost_dev.vhost_ops; int ret; if (!vhost_ops->vhost_vsock_set_running) { return -ENOSYS; } - ret = vhost_ops->vhost_vsock_set_running(&vsock->vhost_dev, start); + ret = vhost_ops->vhost_vsock_set_running(&vvc->vhost_dev, start); if (ret < 0) { return -errno; } return 0; } -static void vhost_vsock_start(VirtIODevice *vdev) -{ - VHostVSock *vsock = VHOST_VSOCK(vdev); - BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); - VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); - int ret; - int i; - - if (!k->set_guest_notifiers) { - error_report("binding does not support guest notifiers"); - return; - } - - ret = vhost_dev_enable_notifiers(&vsock->vhost_dev, vdev); - if (ret < 0) { - error_report("Error enabling host notifiers: %d", -ret); - return; - } - - ret = k->set_guest_notifiers(qbus->parent, vsock->vhost_dev.nvqs, true); - if (ret < 0) { - error_report("Error binding guest notifier: %d", -ret); - goto err_host_notifiers; - } - - vsock->vhost_dev.acked_features = vdev->guest_features; - ret = vhost_dev_start(&vsock->vhost_dev, vdev); - if (ret < 0) { - error_report("Error starting vhost: %d", -ret); - goto err_guest_notifiers; - } - - ret = vhost_vsock_set_running(vsock, 1); - if (ret < 0) { - error_report("Error starting vhost vsock: %d", -ret); - goto err_dev_start; - } - - /* 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 < vsock->vhost_dev.nvqs; i++) { - vhost_virtqueue_mask(&vsock->vhost_dev, vdev, i, false); - } - - return; - -err_dev_start: - vhost_dev_stop(&vsock->vhost_dev, vdev); -err_guest_notifiers: - k->set_guest_notifiers(qbus->parent, vsock->vhost_dev.nvqs, false); -err_host_notifiers: - vhost_dev_disable_notifiers(&vsock->vhost_dev, vdev); -} - -static void vhost_vsock_stop(VirtIODevice *vdev) -{ - VHostVSock *vsock = VHOST_VSOCK(vdev); - BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); - VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); - int ret; - - if (!k->set_guest_notifiers) { - return; - } - - ret = vhost_vsock_set_running(vsock, 0); - if (ret < 0) { - error_report("vhost vsock set running failed: %d", ret); - return; - } - - vhost_dev_stop(&vsock->vhost_dev, vdev); - - ret = k->set_guest_notifiers(qbus->parent, vsock->vhost_dev.nvqs, false); - if (ret < 0) { - error_report("vhost guest notifier cleanup failed: %d", ret); - return; - } - - vhost_dev_disable_notifiers(&vsock->vhost_dev, vdev); -} static void vhost_vsock_set_status(VirtIODevice *vdev, uint8_t status) { - VHostVSock *vsock = VHOST_VSOCK(vdev); + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); bool should_start = status & VIRTIO_CONFIG_S_DRIVER_OK; + int ret; if (!vdev->vm_running) { should_start = false; } - if (vsock->vhost_dev.started == should_start) { + if (vvc->vhost_dev.started == should_start) { return; } if (should_start) { - vhost_vsock_start(vdev); + ret = vhost_vsock_common_start(vdev); + if (ret < 0) { + return; + } + + ret = vhost_vsock_set_running(vdev, 1); + if (ret < 0) { + vhost_vsock_common_stop(vdev); + error_report("Error starting vhost vsock: %d", -ret); + return; + } } else { - vhost_vsock_stop(vdev); + ret = vhost_vsock_set_running(vdev, 0); + if (ret < 0) { + error_report("vhost vsock set running failed: %d", ret); + return; + } + + vhost_vsock_common_stop(vdev); } } @@ -184,108 +111,6 @@ static uint64_t vhost_vsock_get_features(VirtIODevice *vdev, return requested_features; } -static void vhost_vsock_handle_output(VirtIODevice *vdev, VirtQueue *vq) -{ - /* Do nothing */ -} - -static void vhost_vsock_guest_notifier_mask(VirtIODevice *vdev, int idx, - bool mask) -{ - VHostVSock *vsock = VHOST_VSOCK(vdev); - - vhost_virtqueue_mask(&vsock->vhost_dev, vdev, idx, mask); -} - -static bool vhost_vsock_guest_notifier_pending(VirtIODevice *vdev, int idx) -{ - VHostVSock *vsock = VHOST_VSOCK(vdev); - - return vhost_virtqueue_pending(&vsock->vhost_dev, idx); -} - -static void vhost_vsock_send_transport_reset(VHostVSock *vsock) -{ - VirtQueueElement *elem; - VirtQueue *vq = vsock->event_vq; - struct virtio_vsock_event event = { - .id = cpu_to_le32(VIRTIO_VSOCK_EVENT_TRANSPORT_RESET), - }; - - elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); - if (!elem) { - error_report("vhost-vsock missed transport reset event"); - return; - } - - if (elem->out_num) { - error_report("invalid vhost-vsock event virtqueue element with " - "out buffers"); - goto out; - } - - if (iov_from_buf(elem->in_sg, elem->in_num, 0, - &event, sizeof(event)) != sizeof(event)) { - error_report("vhost-vsock event virtqueue element is too short"); - goto out; - } - - virtqueue_push(vq, elem, sizeof(event)); - virtio_notify(VIRTIO_DEVICE(vsock), vq); - -out: - g_free(elem); -} - -static void vhost_vsock_post_load_timer_cleanup(VHostVSock *vsock) -{ - if (!vsock->post_load_timer) { - return; - } - - timer_del(vsock->post_load_timer); - timer_free(vsock->post_load_timer); - vsock->post_load_timer = NULL; -} - -static void vhost_vsock_post_load_timer_cb(void *opaque) -{ - VHostVSock *vsock = opaque; - - vhost_vsock_post_load_timer_cleanup(vsock); - vhost_vsock_send_transport_reset(vsock); -} - -static int vhost_vsock_pre_save(void *opaque) -{ - VHostVSock *vsock = opaque; - - /* At this point, backend must be stopped, otherwise - * it might keep writing to memory. */ - assert(!vsock->vhost_dev.started); - - return 0; -} - -static int vhost_vsock_post_load(void *opaque, int version_id) -{ - VHostVSock *vsock = opaque; - VirtIODevice *vdev = VIRTIO_DEVICE(vsock); - - if (virtio_queue_get_addr(vdev, 2)) { - /* Defer transport reset event to a vm clock timer so that virtqueue - * changes happen after migration has completed. - */ - assert(!vsock->post_load_timer); - vsock->post_load_timer = - timer_new_ns(QEMU_CLOCK_VIRTUAL, - vhost_vsock_post_load_timer_cb, - vsock); - timer_mod(vsock->post_load_timer, 1); - } - return 0; -} - static const VMStateDescription vmstate_virtio_vhost_vsock = { .name = "virtio-vhost_vsock", .minimum_version_id = VHOST_VSOCK_SAVEVM_VERSION, @@ -294,12 +119,13 @@ static const VMStateDescription vmstate_virtio_vhost_vsock = { VMSTATE_VIRTIO_DEVICE, VMSTATE_END_OF_LIST() }, - .pre_save = vhost_vsock_pre_save, - .post_load = vhost_vsock_post_load, + .pre_save = vhost_vsock_common_pre_save, + .post_load = vhost_vsock_common_post_load, }; static void vhost_vsock_device_realize(DeviceState *dev, Error **errp) { + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(dev); VirtIODevice *vdev = VIRTIO_DEVICE(dev); VHostVSock *vsock = VHOST_VSOCK(dev); int vhostfd; @@ -331,46 +157,29 @@ static void vhost_vsock_device_realize(DeviceState *dev, Error **errp) } } - virtio_init(vdev, "vhost-vsock", VIRTIO_ID_VSOCK, - sizeof(struct virtio_vsock_config)); + vhost_vsock_common_realize(vdev, "vhost-vsock"); - /* Receive and transmit queues belong to vhost */ - vsock->recv_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, - vhost_vsock_handle_output); - vsock->trans_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, - vhost_vsock_handle_output); - - /* The event queue belongs to QEMU */ - vsock->event_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, - vhost_vsock_handle_output); - - vsock->vhost_dev.nvqs = ARRAY_SIZE(vsock->vhost_vqs); - vsock->vhost_dev.vqs = vsock->vhost_vqs; - ret = vhost_dev_init(&vsock->vhost_dev, (void *)(uintptr_t)vhostfd, + ret = vhost_dev_init(&vvc->vhost_dev, (void *)(uintptr_t)vhostfd, VHOST_BACKEND_TYPE_KERNEL, 0); if (ret < 0) { error_setg_errno(errp, -ret, "vhost-vsock: vhost_dev_init failed"); goto err_virtio; } - ret = vhost_vsock_set_guest_cid(vsock); + ret = vhost_vsock_set_guest_cid(vdev); if (ret < 0) { error_setg_errno(errp, -ret, "vhost-vsock: unable to set guest cid"); goto err_vhost_dev; } - vsock->post_load_timer = NULL; return; err_vhost_dev: - vhost_dev_cleanup(&vsock->vhost_dev); + vhost_dev_cleanup(&vvc->vhost_dev); /* vhost_dev_cleanup() closes the vhostfd passed to vhost_dev_init() */ vhostfd = -1; err_virtio: - virtio_delete_queue(vsock->recv_vq); - virtio_delete_queue(vsock->trans_vq); - virtio_delete_queue(vsock->event_vq); - virtio_cleanup(vdev); + vhost_vsock_common_unrealize(vdev); if (vhostfd >= 0) { close(vhostfd); } @@ -379,19 +188,14 @@ err_virtio: static void vhost_vsock_device_unrealize(DeviceState *dev) { + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(dev); VirtIODevice *vdev = VIRTIO_DEVICE(dev); - VHostVSock *vsock = VHOST_VSOCK(dev); - - vhost_vsock_post_load_timer_cleanup(vsock); /* This will stop vhost backend if appropriate. */ vhost_vsock_set_status(vdev, 0); - vhost_dev_cleanup(&vsock->vhost_dev); - virtio_delete_queue(vsock->recv_vq); - virtio_delete_queue(vsock->trans_vq); - virtio_delete_queue(vsock->event_vq); - virtio_cleanup(vdev); + vhost_dev_cleanup(&vvc->vhost_dev); + vhost_vsock_common_unrealize(vdev); } static Property vhost_vsock_properties[] = { @@ -407,19 +211,16 @@ static void vhost_vsock_class_init(ObjectClass *klass, void *data) device_class_set_props(dc, vhost_vsock_properties); dc->vmsd = &vmstate_virtio_vhost_vsock; - set_bit(DEVICE_CATEGORY_MISC, dc->categories); vdc->realize = vhost_vsock_device_realize; vdc->unrealize = vhost_vsock_device_unrealize; vdc->get_features = vhost_vsock_get_features; vdc->get_config = vhost_vsock_get_config; vdc->set_status = vhost_vsock_set_status; - vdc->guest_notifier_mask = vhost_vsock_guest_notifier_mask; - vdc->guest_notifier_pending = vhost_vsock_guest_notifier_pending; } static const TypeInfo vhost_vsock_info = { .name = TYPE_VHOST_VSOCK, - .parent = TYPE_VIRTIO_DEVICE, + .parent = TYPE_VHOST_VSOCK_COMMON, .instance_size = sizeof(VHostVSock), .class_init = vhost_vsock_class_init, }; diff --git a/include/hw/virtio/vhost-vsock-common.h b/include/hw/virtio/vhost-vsock-common.h new file mode 100644 index 0000000000..f8b4aaae00 --- /dev/null +++ b/include/hw/virtio/vhost-vsock-common.h @@ -0,0 +1,47 @@ +/* + * Parent class for vhost-vsock devices + * + * Copyright 2015-2020 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#ifndef _QEMU_VHOST_VSOCK_COMMON_H +#define _QEMU_VHOST_VSOCK_COMMON_H + +#include "hw/virtio/virtio.h" +#include "hw/virtio/vhost.h" + +#define TYPE_VHOST_VSOCK_COMMON "vhost-vsock-common" +#define VHOST_VSOCK_COMMON(obj) \ + OBJECT_CHECK(VHostVSockCommon, (obj), TYPE_VHOST_VSOCK_COMMON) + +enum { + VHOST_VSOCK_SAVEVM_VERSION = 0, + + VHOST_VSOCK_QUEUE_SIZE = 128, +}; + +typedef struct { + VirtIODevice parent; + + struct vhost_virtqueue vhost_vqs[2]; + struct vhost_dev vhost_dev; + + VirtQueue *event_vq; + VirtQueue *recv_vq; + VirtQueue *trans_vq; + + QEMUTimer *post_load_timer; +} VHostVSockCommon; + +int vhost_vsock_common_start(VirtIODevice *vdev); +void vhost_vsock_common_stop(VirtIODevice *vdev); +int vhost_vsock_common_pre_save(void *opaque); +int vhost_vsock_common_post_load(void *opaque, int version_id); +void vhost_vsock_common_realize(VirtIODevice *vdev, const char *name); +void vhost_vsock_common_unrealize(VirtIODevice *vdev); + +#endif /* _QEMU_VHOST_VSOCK_COMMON_H */ diff --git a/include/hw/virtio/vhost-vsock.h b/include/hw/virtio/vhost-vsock.h index bc5a988ee5..8cbb7b90f9 100644 --- a/include/hw/virtio/vhost-vsock.h +++ b/include/hw/virtio/vhost-vsock.h @@ -14,8 +14,7 @@ #ifndef QEMU_VHOST_VSOCK_H #define QEMU_VHOST_VSOCK_H -#include "hw/virtio/virtio.h" -#include "hw/virtio/vhost.h" +#include "hw/virtio/vhost-vsock-common.h" #define TYPE_VHOST_VSOCK "vhost-vsock-device" #define VHOST_VSOCK(obj) \ @@ -28,14 +27,8 @@ typedef struct { typedef struct { /*< private >*/ - VirtIODevice parent; + VHostVSockCommon parent; VHostVSockConf conf; - struct vhost_virtqueue vhost_vqs[2]; - struct vhost_dev vhost_dev; - VirtQueue *event_vq; - VirtQueue *recv_vq; - VirtQueue *trans_vq; - QEMUTimer *post_load_timer; /*< public >*/ } VHostVSock;