0df750e9d3
By making libvhost-user a subproject, check it builds standalone (without the global QEMU cflags etc). Note that the library still relies on QEMU include/qemu/atomic.h and linux_headers/. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20201125100640.366523-6-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
66 lines
2 KiB
C
66 lines
2 KiB
C
/*
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* Sharing QEMU devices via vhost-user protocol
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*
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* Copyright (c) Coiby Xu <coiby.xu@gmail.com>.
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* Copyright (c) 2020 Red Hat, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#ifndef VHOST_USER_SERVER_H
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#define VHOST_USER_SERVER_H
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#include "subprojects/libvhost-user/libvhost-user.h" /* only for the type definitions */
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#include "io/channel-socket.h"
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#include "io/channel-file.h"
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#include "io/net-listener.h"
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#include "qemu/error-report.h"
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#include "qapi/error.h"
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#include "standard-headers/linux/virtio_blk.h"
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/* A kick fd that we monitor on behalf of libvhost-user */
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typedef struct VuFdWatch {
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VuDev *vu_dev;
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int fd; /*kick fd*/
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void *pvt;
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vu_watch_cb cb;
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QTAILQ_ENTRY(VuFdWatch) next;
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} VuFdWatch;
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/**
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* VuServer:
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* A vhost-user server instance with user-defined VuDevIface callbacks.
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* Vhost-user device backends can be implemented using VuServer. VuDevIface
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* callbacks and virtqueue kicks run in the given AioContext.
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*/
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typedef struct {
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QIONetListener *listener;
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QEMUBH *restart_listener_bh;
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AioContext *ctx;
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int max_queues;
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const VuDevIface *vu_iface;
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/* Protected by ctx lock */
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VuDev vu_dev;
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QIOChannel *ioc; /* The I/O channel with the client */
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QIOChannelSocket *sioc; /* The underlying data channel with the client */
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QTAILQ_HEAD(, VuFdWatch) vu_fd_watches;
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Coroutine *co_trip; /* coroutine for processing VhostUserMsg */
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} VuServer;
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bool vhost_user_server_start(VuServer *server,
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SocketAddress *unix_socket,
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AioContext *ctx,
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uint16_t max_queues,
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const VuDevIface *vu_iface,
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Error **errp);
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void vhost_user_server_stop(VuServer *server);
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void vhost_user_server_attach_aio_context(VuServer *server, AioContext *ctx);
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void vhost_user_server_detach_aio_context(VuServer *server);
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#endif /* VHOST_USER_SERVER_H */
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