vmxnet3: Use common MAC address tracing macros
[qemu.git] / block / nbd-client.h
1 #ifndef NBD_CLIENT_H
2 #define NBD_CLIENT_H
3
4 #include "qemu-common.h"
5 #include "block/nbd.h"
6 #include "block/block_int.h"
7 #include "io/channel-socket.h"
8
9 /* #define DEBUG_NBD */
10
11 #if defined(DEBUG_NBD)
12 #define logout(fmt, ...) \
13 fprintf(stderr, "nbd\t%-24s" fmt, __func__, ##__VA_ARGS__)
14 #else
15 #define logout(fmt, ...) ((void)0)
16 #endif
17
18 #define MAX_NBD_REQUESTS 16
19
20 typedef struct NbdClientSession {
21 QIOChannelSocket *sioc; /* The master data channel */
22 QIOChannel *ioc; /* The current I/O channel which may differ (eg TLS) */
23 uint32_t nbdflags;
24 off_t size;
25
26 CoMutex send_mutex;
27 CoMutex free_sema;
28 Coroutine *send_coroutine;
29 int in_flight;
30
31 Coroutine *recv_coroutine[MAX_NBD_REQUESTS];
32 struct nbd_reply reply;
33
34 bool is_unix;
35 } NbdClientSession;
36
37 NbdClientSession *nbd_get_client_session(BlockDriverState *bs);
38
39 int nbd_client_init(BlockDriverState *bs,
40 QIOChannelSocket *sock,
41 const char *export_name,
42 QCryptoTLSCreds *tlscreds,
43 const char *hostname,
44 Error **errp);
45 void nbd_client_close(BlockDriverState *bs);
46
47 int nbd_client_co_discard(BlockDriverState *bs, int64_t sector_num,
48 int nb_sectors);
49 int nbd_client_co_flush(BlockDriverState *bs);
50 int nbd_client_co_writev(BlockDriverState *bs, int64_t sector_num,
51 int nb_sectors, QEMUIOVector *qiov, int flags);
52 int nbd_client_co_readv(BlockDriverState *bs, int64_t sector_num,
53 int nb_sectors, QEMUIOVector *qiov);
54
55 void nbd_client_detach_aio_context(BlockDriverState *bs);
56 void nbd_client_attach_aio_context(BlockDriverState *bs,
57 AioContext *new_context);
58
59 #endif /* NBD_CLIENT_H */