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   ibv_open_device    ( 3 )

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Имя (Name)

ibv_open_device, ibv_close_device - open and close an RDMA device
       context

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Синопсис (Synopsis)

#include <infiniband/verbs.h>

       struct ibv_context *ibv_open_device(struct ibv_device *device);

       int ibv_close_device(struct ibv_context *context);

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Описание (Description)

ibv_open_device() opens the device device and creates a context
       for further use.

       ibv_close_device() closes the device context context.

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Возвращаемое значение (Return value)

ibv_open_device() returns a pointer to the allocated device
       context, or NULL if the request fails.

       ibv_close_device() returns 0 on success, -1 on failure.

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Примечание (Note)

ibv_close_device() does not release all the resources allocated
       using context context.  To avoid resource leaks, the user should
       release all associated resources before closing a context.

       Setting the environment variable **RDMAV_ALLOW_DISASSOC_DESTROY**
       tells the library to relate an EIO from destroy commands as a
       success as the kernel resources were already released. This comes
       to prevent memory leakage in the user space area upon device
       disassociation. Applications using this flag cannot call
       ibv_get_cq_event or ibv_get_async_event concurrently with any
       call to an object destruction function.

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Смотри также (See also)

ibv_get_device_list(3), ibv_query_device(3), ibv_query_port(3),
       ibv_query_gid(3), ibv_query_pkey(3)

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