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   rdma_set_option    ( 3 )

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Имя (Name)

rdma_set_option - Set communication options for an rdma_cm_id.

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Синопсис (Synopsis)

#include <rdma/rdma_cma.h>

       int rdma_set_option (struct rdma_cm_id *id, int level, int
       optname, void *optval, size_t optlen);

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Аргументы (Arguments)

id          RDMA identifier.

       level       Protocol level of the option to set.

       optname     Name of the option, relative to the level, to set.

       optval      Reference to the option data.  The data is dependent
                   on the level and optname.

       optlen      The size of the %optval buffer.

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Описание (Description)

Sets communication options for an rdma_cm_id.  This call is used
       to override the default system settings.

       optname can be one of

       RDMA_OPTION_ID_TOS
                   Specify the quality of service provided by a
                   connection.  The expected optlen is size of uint8_t.

       RDMA_OPTION_ID_REUSEADDR
                   Bound the rdma_cm_id to a reuseable address. This
                   will allow other users to bind to that same address.
                   The expected optlen is size of int.

       RDMA_OPTION_ID_AFONLY
                   Set IPV6_V6ONLY socket.  The expected optlen is size
                   of int.

       RDMA_OPTION_IB_PATH
                   Set IB path record data.  The expected optlen is size
                   of struct ibv_path_data[].

       RDMA_OPTION_ID_ACK_TIMEOUT
                   Set QP ACK timeout.  The value calculated according
                   to the formula 4.096 * 2^(ack_timeout) usec.

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Возвращаемое значение (Return value)

Returns 0 on success, or -1 on error.  If an error occurs, errno
       will be set to indicate the failure reason.

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Примечание (Note)

Option details may be found in the relevant header files.

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Смотри также (See also)

rdma_create_id(3)

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