92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
|
/*
|
||
|
|
* filter-replay.c
|
||
|
|
*
|
||
|
|
* Copyright (c) 2010-2016 Institute for System Programming
|
||
|
|
* of the Russian Academy of Sciences.
|
||
|
|
*
|
||
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
||
|
|
* See the COPYING file in the top-level directory.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "qemu/osdep.h"
|
||
|
|
#include "clients.h"
|
||
|
|
#include "qemu-common.h"
|
||
|
|
#include "qemu/error-report.h"
|
||
|
|
#include "qemu/iov.h"
|
||
|
|
#include "qemu/log.h"
|
||
|
|
#include "qemu/timer.h"
|
||
|
|
#include "qapi/visitor.h"
|
||
|
|
#include "net/filter.h"
|
||
|
|
#include "sysemu/replay.h"
|
||
|
|
|
||
|
|
#define TYPE_FILTER_REPLAY "filter-replay"
|
||
|
|
|
||
|
|
#define FILTER_REPLAY(obj) \
|
||
|
|
OBJECT_CHECK(NetFilterReplayState, (obj), TYPE_FILTER_REPLAY)
|
||
|
|
|
||
|
|
struct NetFilterReplayState {
|
||
|
|
NetFilterState nfs;
|
||
|
|
ReplayNetState *rns;
|
||
|
|
};
|
||
|
|
typedef struct NetFilterReplayState NetFilterReplayState;
|
||
|
|
|
||
|
|
static ssize_t filter_replay_receive_iov(NetFilterState *nf,
|
||
|
|
NetClientState *sndr,
|
||
|
|
unsigned flags,
|
||
|
|
const struct iovec *iov,
|
||
|
|
int iovcnt, NetPacketSent *sent_cb)
|
||
|
|
{
|
||
|
|
NetFilterReplayState *nfrs = FILTER_REPLAY(nf);
|
||
|
|
switch (replay_mode) {
|
||
|
|
case REPLAY_MODE_RECORD:
|
||
|
|
if (nf->netdev == sndr) {
|
||
|
|
replay_net_packet_event(nfrs->rns, flags, iov, iovcnt);
|
||
|
|
return iov_size(iov, iovcnt);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
case REPLAY_MODE_PLAY:
|
||
|
|
/* Drop all packets in replay mode.
|
||
|
|
Packets from the log will be injected by the replay module. */
|
||
|
|
return iov_size(iov, iovcnt);
|
||
|
|
default:
|
||
|
|
/* Pass all the packets. */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void filter_replay_instance_init(Object *obj)
|
||
|
|
{
|
||
|
|
NetFilterReplayState *nfrs = FILTER_REPLAY(obj);
|
||
|
|
nfrs->rns = replay_register_net(&nfrs->nfs);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void filter_replay_instance_finalize(Object *obj)
|
||
|
|
{
|
||
|
|
NetFilterReplayState *nfrs = FILTER_REPLAY(obj);
|
||
|
|
replay_unregister_net(nfrs->rns);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void filter_replay_class_init(ObjectClass *oc, void *data)
|
||
|
|
{
|
||
|
|
NetFilterClass *nfc = NETFILTER_CLASS(oc);
|
||
|
|
|
||
|
|
nfc->receive_iov = filter_replay_receive_iov;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const TypeInfo filter_replay_info = {
|
||
|
|
.name = TYPE_FILTER_REPLAY,
|
||
|
|
.parent = TYPE_NETFILTER,
|
||
|
|
.class_init = filter_replay_class_init,
|
||
|
|
.instance_init = filter_replay_instance_init,
|
||
|
|
.instance_finalize = filter_replay_instance_finalize,
|
||
|
|
.instance_size = sizeof(NetFilterReplayState),
|
||
|
|
};
|
||
|
|
|
||
|
|
static void filter_replay_register_types(void)
|
||
|
|
{
|
||
|
|
type_register_static(&filter_replay_info);
|
||
|
|
}
|
||
|
|
|
||
|
|
type_init(filter_replay_register_types);
|