1646c5478SPavel Dovgalyuk /*
2646c5478SPavel Dovgalyuk * filter-replay.c
3646c5478SPavel Dovgalyuk *
4646c5478SPavel Dovgalyuk * Copyright (c) 2010-2016 Institute for System Programming
5646c5478SPavel Dovgalyuk * of the Russian Academy of Sciences.
6646c5478SPavel Dovgalyuk *
7646c5478SPavel Dovgalyuk * This work is licensed under the terms of the GNU GPL, version 2 or later.
8646c5478SPavel Dovgalyuk * See the COPYING file in the top-level directory.
9646c5478SPavel Dovgalyuk *
10646c5478SPavel Dovgalyuk */
11646c5478SPavel Dovgalyuk
12646c5478SPavel Dovgalyuk #include "qemu/osdep.h"
13646c5478SPavel Dovgalyuk #include "clients.h"
14646c5478SPavel Dovgalyuk #include "qemu/error-report.h"
15646c5478SPavel Dovgalyuk #include "qemu/iov.h"
160b8fa32fSMarkus Armbruster #include "qemu/module.h"
17646c5478SPavel Dovgalyuk #include "qemu/timer.h"
18646c5478SPavel Dovgalyuk #include "qapi/visitor.h"
19646c5478SPavel Dovgalyuk #include "net/filter.h"
20646c5478SPavel Dovgalyuk #include "sysemu/replay.h"
21db1015e9SEduardo Habkost #include "qom/object.h"
22646c5478SPavel Dovgalyuk
23646c5478SPavel Dovgalyuk #define TYPE_FILTER_REPLAY "filter-replay"
24646c5478SPavel Dovgalyuk
25*8063396bSEduardo Habkost OBJECT_DECLARE_SIMPLE_TYPE(NetFilterReplayState, FILTER_REPLAY)
26646c5478SPavel Dovgalyuk
27646c5478SPavel Dovgalyuk struct NetFilterReplayState {
28646c5478SPavel Dovgalyuk NetFilterState nfs;
29646c5478SPavel Dovgalyuk ReplayNetState *rns;
30646c5478SPavel Dovgalyuk };
31646c5478SPavel Dovgalyuk
filter_replay_receive_iov(NetFilterState * nf,NetClientState * sndr,unsigned flags,const struct iovec * iov,int iovcnt,NetPacketSent * sent_cb)32646c5478SPavel Dovgalyuk static ssize_t filter_replay_receive_iov(NetFilterState *nf,
33646c5478SPavel Dovgalyuk NetClientState *sndr,
34646c5478SPavel Dovgalyuk unsigned flags,
35646c5478SPavel Dovgalyuk const struct iovec *iov,
36646c5478SPavel Dovgalyuk int iovcnt, NetPacketSent *sent_cb)
37646c5478SPavel Dovgalyuk {
38646c5478SPavel Dovgalyuk NetFilterReplayState *nfrs = FILTER_REPLAY(nf);
39646c5478SPavel Dovgalyuk switch (replay_mode) {
40646c5478SPavel Dovgalyuk case REPLAY_MODE_RECORD:
41646c5478SPavel Dovgalyuk if (nf->netdev == sndr) {
42646c5478SPavel Dovgalyuk replay_net_packet_event(nfrs->rns, flags, iov, iovcnt);
43646c5478SPavel Dovgalyuk return iov_size(iov, iovcnt);
44646c5478SPavel Dovgalyuk }
45646c5478SPavel Dovgalyuk return 0;
46646c5478SPavel Dovgalyuk case REPLAY_MODE_PLAY:
47646c5478SPavel Dovgalyuk /* Drop all packets in replay mode.
48646c5478SPavel Dovgalyuk Packets from the log will be injected by the replay module. */
49646c5478SPavel Dovgalyuk return iov_size(iov, iovcnt);
50646c5478SPavel Dovgalyuk default:
51646c5478SPavel Dovgalyuk /* Pass all the packets. */
52646c5478SPavel Dovgalyuk return 0;
53646c5478SPavel Dovgalyuk }
54646c5478SPavel Dovgalyuk }
55646c5478SPavel Dovgalyuk
filter_replay_instance_init(Object * obj)56646c5478SPavel Dovgalyuk static void filter_replay_instance_init(Object *obj)
57646c5478SPavel Dovgalyuk {
58646c5478SPavel Dovgalyuk NetFilterReplayState *nfrs = FILTER_REPLAY(obj);
59646c5478SPavel Dovgalyuk nfrs->rns = replay_register_net(&nfrs->nfs);
60646c5478SPavel Dovgalyuk }
61646c5478SPavel Dovgalyuk
filter_replay_instance_finalize(Object * obj)62646c5478SPavel Dovgalyuk static void filter_replay_instance_finalize(Object *obj)
63646c5478SPavel Dovgalyuk {
64646c5478SPavel Dovgalyuk NetFilterReplayState *nfrs = FILTER_REPLAY(obj);
65646c5478SPavel Dovgalyuk replay_unregister_net(nfrs->rns);
66646c5478SPavel Dovgalyuk }
67646c5478SPavel Dovgalyuk
filter_replay_class_init(ObjectClass * oc,void * data)68646c5478SPavel Dovgalyuk static void filter_replay_class_init(ObjectClass *oc, void *data)
69646c5478SPavel Dovgalyuk {
70646c5478SPavel Dovgalyuk NetFilterClass *nfc = NETFILTER_CLASS(oc);
71646c5478SPavel Dovgalyuk
72646c5478SPavel Dovgalyuk nfc->receive_iov = filter_replay_receive_iov;
73646c5478SPavel Dovgalyuk }
74646c5478SPavel Dovgalyuk
75646c5478SPavel Dovgalyuk static const TypeInfo filter_replay_info = {
76646c5478SPavel Dovgalyuk .name = TYPE_FILTER_REPLAY,
77646c5478SPavel Dovgalyuk .parent = TYPE_NETFILTER,
78646c5478SPavel Dovgalyuk .class_init = filter_replay_class_init,
79646c5478SPavel Dovgalyuk .instance_init = filter_replay_instance_init,
80646c5478SPavel Dovgalyuk .instance_finalize = filter_replay_instance_finalize,
81646c5478SPavel Dovgalyuk .instance_size = sizeof(NetFilterReplayState),
82646c5478SPavel Dovgalyuk };
83646c5478SPavel Dovgalyuk
filter_replay_register_types(void)84646c5478SPavel Dovgalyuk static void filter_replay_register_types(void)
85646c5478SPavel Dovgalyuk {
86646c5478SPavel Dovgalyuk type_register_static(&filter_replay_info);
87646c5478SPavel Dovgalyuk }
88646c5478SPavel Dovgalyuk
89646c5478SPavel Dovgalyuk type_init(filter_replay_register_types);
90