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   ibv_query_rt_values_ex    ( 3 )

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Имя (Name)

ibv_query_rt_values_ex - query an RDMA device for some real time
       values

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Синопсис (Synopsis)

#include <infiniband/verbs.h>

       int ibv_query_rt_values_ex(struct ibv_context *context,
                                  struct ibv_values_ex *values);

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Описание (Description)

ibv_query_rt_values_ex() returns certain real time values of a
       device context.  The argument attr is a pointer to an
       ibv_device_attr_ex struct, as defined in <infiniband/verbs.h>.

       struct ibv_values_ex {
               uint32_t             comp_mask;    /* Compatibility mask that defines the query/queried fields [in/out] */
               struct timespec      raw_clock;    /* HW raw clock */
       };

       enum ibv_values_mask {
               IBV_VALUES_MASK_RAW_CLOCK = 1 << 0, /* HW raw clock */
       };

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Возвращаемое значение (Return value)

ibv_query_rt_values_ex() returns 0 on success, or the value of
       errno on failure (which indicates the failure reason).

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Примечание (Note)

This extension verb only calls the provider, the provider has to
       query this value somehow and mark the queried values in the
       comp_mask field.

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Смотри также (See also)

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

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