1mlx5dv_devx_qp[/cq/srq/wq/imnldx_5tdbvl_]d_emvoxd_iqfpy[//cqq/userrqy/(w3q)/ind_tbl]_modify / query(3)
2
3
4

NAME

6       mlx5dv_devx_qp_modify - Modifies a verbs QP via DEVX
7
8       mlx5dv_devx_qp_query - Queries a verbs QP via DEVX
9
10       mlx5dv_devx_cq_modify - Modifies a verbs CQ via DEVX
11
12       mlx5dv_devx_cq_query - Queries a verbs CQ via DEVX
13
14       mlx5dv_devx_srq_modify - Modifies a verbs SRQ via DEVX
15
16       mlx5dv_devx_srq_query - Queries a verbs SRQ via DEVX
17
18       mlx5dv_devx_wq_modify - Modifies a verbs WQ via DEVX
19
20       mlx5dv_devx_wq_query - Queries a verbs WQ via DEVX
21
22       mlx5dv_devx_ind_tbl_modify - Modifies a verbs indirection table via DE‐
23       VX
24
25       mlx5dv_devx_ind_tbl_query - Queries a verbs indirection table via DEVX
26

SYNOPSIS

28              #include <infiniband/mlx5dv.h>
29              int mlx5dv_devx_qp_modify(struct ibv_qp *qp, const void *in, size_t inlen,
30                                        void *out, size_t outlen);
31              int mlx5dv_devx_qp_query(struct ibv_qp *qp, const void *in, size_t inlen,
32                                       void *out, size_t outlen);
33              int mlx5dv_devx_cq_modify(struct ibv_cq *cq, const void *in, size_t inlen,
34                                        void *out, size_t outlen);
35              int mlx5dv_devx_cq_query(struct ibv_cq *cq, const void *in, size_t inlen,
36                                       void *out, size_t outlen);
37              int mlx5dv_devx_srq_modify(struct ibv_srq *srq, const void *in, size_t inlen,
38                                         void *out, size_t outlen);
39              int mlx5dv_devx_srq_query(struct ibv_srq *srq, const void *in, size_t inlen,
40                                        void *out, size_t outlen);
41              int mlx5dv_devx_wq_modify(struct ibv_wq *wq, const void *in, size_t inlen,
42                                        void *out, size_t outlen);
43              int mlx5dv_devx_wq_query(struct ibv_wq *wq, const void *in, size_t inlen,
44                                       void *out, size_t outlen);
45              int mlx5dv_devx_ind_tbl_modify(struct ibv_rwq_ind_table *ind_tbl,
46                                             const void *in, size_t inlen,
47                                             void *out, size_t outlen);
48              int mlx5dv_devx_ind_tbl_query(struct ibv_rwq_ind_table *ind_tbl,
49                                            const void *in, size_t inlen,
50                                            void *out, size_t outlen);
51

DESCRIPTION

53       Modify / query a verb object over the DEVX interface.
54
55       The DEVX API enables direct access from the user space area to the mlx5
56       device driver by using the KABI mechanism.  The main purpose is to make
57       the user space driver as independent as possible  from  the  kernel  so
58       that  future  device  functionality  and commands can be activated with
59       minimal to none kernel changes.
60
61       The above APIs enables modifying/querying a verb object  via  the  DEVX
62       interface.   This  enables interoperability between verbs and DEVX.  As
63       such an  application  can  use  the  create  method  from  verbs  (e.g.
64       ibv_create_qp)  and  modify and query the created object via DEVX (e.g.
65       mlx5dv_devx_qp_modify).
66

ARGUMENTS

68       qp/cq/wq/srq/ind_tbl
69              The ibv_xxx object to issue the action on.
70
71       in     A buffer which contains the command's input data provided  in  a
72              device specification format.
73
74       inlen  The size of in buffer in bytes.
75
76       out    A  buffer  which contains the command's output data according to
77              the device specification format.
78
79       outlen The size of out buffer in bytes.
80

RETURN VALUE

82       Upon success 0 is returned or the value of errno on a failure.
83

SEE ALSO

85       mlx5dv_open_device, mlx5dv_devx_obj_create
86

AUTHOR

88       Yishai Hadas <yishaih@mellanox.com>
89
90
91
92                          mlx5dv_devx_qp[/cq/srq/wq/ind_tbl]_modify / query(3)