1MLX5DV_INIT_OBJ(3) Library Functions Manual MLX5DV_INIT_OBJ(3)
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6 mlx5dv_init_obj - Initialize mlx5 direct verbs object from ibv_xxx
7 structures
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10 #include <infiniband/mlx5dv.h>
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12 int mlx5dv_init_obj(struct mlx5dv_obj *obj, uint64_t obj_type);
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15 mlx5dv_init_obj() This function will initialize mlx5dv_xxx structs
16 based on supplied type. The information for initialization is taken
17 from ibv_xx structs supplied as part of input.
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19 Request information of CQ marks its owned by direct verbs for all con‐
20 sumer index related actions. The initialization type can be combination
21 of several types together.
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23 struct mlx5dv_qp {
24 uint32_t *dbrec;
25 struct {
26 void *buf;
27 uint32_t wqe_cnt;
28 uint32_t stride;
29 } sq;
30 struct {
31 void *buf;
32 uint32_t wqe_cnt;
33 uint32_t stride;
34 } rq;
35 struct {
36 void *reg;
37 uint32_t size;
38 } bf;
39 uint64_t comp_mask;
40 };
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42 struct mlx5dv_cq {
43 void *buf;
44 uint32_t *dbrec;
45 uint32_t cqe_cnt;
46 uint32_t cqe_size;
47 void *cq_uar;
48 uint32_t cqn;
49 uint64_t comp_mask;
50 };
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52 struct mlx5dv_srq {
53 void *buf;
54 uint32_t *dbrec;
55 uint32_t stride;
56 uint32_t head;
57 uint32_t tail;
58 uint64_t comp_mask;
59 };
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61 struct mlx5dv_rwq {
62 void *buf;
63 uint32_t *dbrec;
64 uint32_t wqe_cnt;
65 uint32_t stride;
66 uint64_t comp_mask;
67 };
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69 struct mlx5dv_dm {
70 void *buf;
71 uint64_t length;
72 uint64_t comp_mask;
73 };
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75 struct mlx5dv_ah {
76 struct mlx5_wqe_av *av;
77 uint64_t comp_mask;
78 };
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80 struct mlx5dv_obj {
81 struct {
82 struct ibv_qp *in;
83 struct mlx5dv_qp *out;
84 } qp;
85 struct {
86 struct ibv_cq *in;
87 struct mlx5dv_cq *out;
88 } cq;
89 struct {
90 struct ibv_srq *in;
91 struct mlx5dv_srq *out;
92 } srq;
93 struct {
94 struct ibv_wq *in;
95 struct mlx5dv_rwq *out;
96 } rwq;
97 struct {
98 struct ibv_dm *in;
99 struct mlx5dv_dm *out;
100 } dm;
101 struct {
102 struct ibv_ah *in;
103 struct mlx5dv_ah *out;
104 } ah;
105 };
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107 enum mlx5dv_obj_type {
108 MLX5DV_OBJ_QP = 1 << 0,
109 MLX5DV_OBJ_CQ = 1 << 1,
110 MLX5DV_OBJ_SRQ = 1 << 2,
111 MLX5DV_OBJ_RWQ = 1 << 3,
112 MLX5DV_OBJ_DM = 1 << 4,
113 MLX5DV_OBJ_AH = 1 << 5,
114 };
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117 0 on success or the value of errno on failure (which indicates the
118 failure reason).
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121 * The information if doorbell is blueflame is based on
122 mlx5dv_qp->bf->size, in case of 0 it's not a BF.
123 * Compatibility masks (comp_mask) are in/out fields.
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126 mlx5dv(7)
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129 Leon Romanovsky <leonro@mellanox.com>
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1331.0.0 2017-02-02 MLX5DV_INIT_OBJ(3)