diff options
author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/block/nbd-client.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/block/nbd-client.h')
-rw-r--r-- | qemu/block/nbd-client.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/qemu/block/nbd-client.h b/qemu/block/nbd-client.h new file mode 100644 index 000000000..e8413408b --- /dev/null +++ b/qemu/block/nbd-client.h @@ -0,0 +1,53 @@ +#ifndef NBD_CLIENT_H +#define NBD_CLIENT_H + +#include "qemu-common.h" +#include "block/nbd.h" +#include "block/block_int.h" + +/* #define DEBUG_NBD */ + +#if defined(DEBUG_NBD) +#define logout(fmt, ...) \ + fprintf(stderr, "nbd\t%-24s" fmt, __func__, ##__VA_ARGS__) +#else +#define logout(fmt, ...) ((void)0) +#endif + +#define MAX_NBD_REQUESTS 16 + +typedef struct NbdClientSession { + int sock; + uint32_t nbdflags; + off_t size; + + CoMutex send_mutex; + CoMutex free_sema; + Coroutine *send_coroutine; + int in_flight; + + Coroutine *recv_coroutine[MAX_NBD_REQUESTS]; + struct nbd_reply reply; + + bool is_unix; +} NbdClientSession; + +NbdClientSession *nbd_get_client_session(BlockDriverState *bs); + +int nbd_client_init(BlockDriverState *bs, int sock, const char *export_name, + Error **errp); +void nbd_client_close(BlockDriverState *bs); + +int nbd_client_co_discard(BlockDriverState *bs, int64_t sector_num, + int nb_sectors); +int nbd_client_co_flush(BlockDriverState *bs); +int nbd_client_co_writev(BlockDriverState *bs, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov); +int nbd_client_co_readv(BlockDriverState *bs, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov); + +void nbd_client_detach_aio_context(BlockDriverState *bs); +void nbd_client_attach_aio_context(BlockDriverState *bs, + AioContext *new_context); + +#endif /* NBD_CLIENT_H */ |