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