1MLX4DV_QUERY_DEVICE(3)     Library Functions Manual     MLX4DV_QUERY_DEVICE(3)
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NAME

6       mlx4dv_query_device - Query device capabilities specific to mlx4
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SYNOPSIS

9       #include <infiniband/mlx4dv.h>
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11       int mlx4dv_query_device(struct ibv_context *ctx_in,
12                               struct mlx4dv_context *attrs_out);
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DESCRIPTION

15       mlx4dv_query_device()  Query  mlx4  specific device information that is
16       usable via the direct verbs interface.
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18       This function returns a version and  compatibility  mask.  The  version
19       represents the format of the internal hardware structures that mlx4dv.h
20       exposes.  Future additions of new fields to the existing structures are
21       handled by the comp_mask field.
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23       struct mlx4dv_context {
24               uint8_t         version;
25               uint32_t        max_inl_recv_sz; /* Maximum supported size of inline receive  */
26               uint64_t        comp_mask;
27       };
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RETURN VALUE

31       0  on  success  or  the  value of errno on failure (which indicates the
32       failure reason).
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NOTES

35        * Compatibility mask (comp_mask) is an in/out field.
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SEE ALSO

38       mlx4dv(7), ibv_query_device(3)
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AUTHORS

41       Maor Gottlieb <maorg@mellanox.com>
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451.0.0                             2017-06-27            MLX4DV_QUERY_DEVICE(3)