80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
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* Copyright (c) 2015 FUJITSU LIMITED
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* Author: Yang Hongyang <yanghy@cn.fujitsu.com>
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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 QEMU_NET_FILTER_H
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#define QEMU_NET_FILTER_H
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#include "qom/object.h"
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#include "qemu-common.h"
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#include "net/queue.h"
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#define TYPE_NETFILTER "netfilter"
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#define NETFILTER(obj) \
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OBJECT_CHECK(NetFilterState, (obj), TYPE_NETFILTER)
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#define NETFILTER_GET_CLASS(obj) \
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OBJECT_GET_CLASS(NetFilterClass, (obj), TYPE_NETFILTER)
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#define NETFILTER_CLASS(klass) \
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OBJECT_CLASS_CHECK(NetFilterClass, (klass), TYPE_NETFILTER)
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typedef void (FilterSetup) (NetFilterState *nf, Error **errp);
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typedef void (FilterCleanup) (NetFilterState *nf);
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/*
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* Return:
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* 0: finished handling the packet, we should continue
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* size: filter stolen this packet, we stop pass this packet further
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*/
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typedef ssize_t (FilterReceiveIOV)(NetFilterState *nc,
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NetClientState *sender,
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unsigned flags,
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const struct iovec *iov,
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int iovcnt,
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NetPacketSent *sent_cb);
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typedef void (FilterStatusChanged) (NetFilterState *nf, Error **errp);
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typedef struct NetFilterClass {
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ObjectClass parent_class;
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/* optional */
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FilterSetup *setup;
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FilterCleanup *cleanup;
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FilterStatusChanged *status_changed;
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/* mandatory */
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FilterReceiveIOV *receive_iov;
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} NetFilterClass;
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struct NetFilterState {
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/* private */
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Object parent;
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/* protected */
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char *netdev_id;
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NetClientState *netdev;
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NetFilterDirection direction;
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bool on;
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QTAILQ_ENTRY(NetFilterState) next;
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};
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ssize_t qemu_netfilter_receive(NetFilterState *nf,
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NetFilterDirection direction,
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NetClientState *sender,
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unsigned flags,
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const struct iovec *iov,
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int iovcnt,
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NetPacketSent *sent_cb);
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/* pass the packet to the next filter */
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ssize_t qemu_netfilter_pass_to_next(NetClientState *sender,
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unsigned flags,
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const struct iovec *iov,
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int iovcnt,
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void *opaque);
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#endif /* QEMU_NET_FILTER_H */
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