ibv_query_rt_values_ex - query an RDMA device for some real time values

Matan Barak <matanb@mellanox.com> Yishai Hadas <yishaih@mellanox.com> libibverbs 2016-2-20 IBV_QUERY_RT_VALUES_EX(3)

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 */ };

ibv_query_rt_values_ex - query an RDMA device for some real time values

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.

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

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