mirror of https://gitee.com/openkylin/qemu.git
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#ifndef NBD_CLIENT_H
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#define NBD_CLIENT_H
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#include "qemu-common.h"
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#include "block/nbd.h"
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#include "block/block_int.h"
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/* #define DEBUG_NBD */
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#if defined(DEBUG_NBD)
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#define logout(fmt, ...) \
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fprintf(stderr, "nbd\t%-24s" fmt, __func__, ##__VA_ARGS__)
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#else
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#define logout(fmt, ...) ((void)0)
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#endif
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#define MAX_NBD_REQUESTS 16
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typedef struct NbdClientSession {
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int sock;
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uint32_t nbdflags;
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off_t size;
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size_t blocksize;
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CoMutex send_mutex;
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CoMutex free_sema;
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Coroutine *send_coroutine;
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int in_flight;
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Coroutine *recv_coroutine[MAX_NBD_REQUESTS];
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struct nbd_reply reply;
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bool is_unix;
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BlockDriverState *bs;
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} NbdClientSession;
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int nbd_client_session_init(NbdClientSession *client, BlockDriverState *bs,
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int sock, const char *export_name);
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void nbd_client_session_close(NbdClientSession *client);
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int nbd_client_session_co_discard(NbdClientSession *client, int64_t sector_num,
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int nb_sectors);
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int nbd_client_session_co_flush(NbdClientSession *client);
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int nbd_client_session_co_writev(NbdClientSession *client, int64_t sector_num,
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int nb_sectors, QEMUIOVector *qiov);
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int nbd_client_session_co_readv(NbdClientSession *client, int64_t sector_num,
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int nb_sectors, QEMUIOVector *qiov);
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void nbd_client_session_detach_aio_context(NbdClientSession *client);
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void nbd_client_session_attach_aio_context(NbdClientSession *client,
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AioContext *new_context);
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#endif /* NBD_CLIENT_H */
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