1mlx5dv_devx_qp[/cq/srq/wq/imnldx_5tdbvl_]d_emvoxd_iqfpy[//cqq/userrqy/(w3q)/ind_tbl]_modify / query(3)
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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
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12       mlx5dv_devx_cq_query - Queries a verbs CQ via DEVX
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14       mlx5dv_devx_srq_modify - Modifies a verbs SRQ via DEVX
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16       mlx5dv_devx_srq_query - Queries a verbs SRQ via DEVX
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18       mlx5dv_devx_wq_modify - Modifies a verbs WQ via DEVX
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20       mlx5dv_devx_wq_query - Queries a verbs WQ via DEVX
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22       mlx5dv_devx_ind_tbl_modify - Modifies a verbs indirection table via DE‐
23       VX
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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. ibv_cre‐
64       ate_qp)   and   modify   and   query   the   created  object  via  DEVX
65       (e.g. 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.
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74       inlen  The size of in buffer in bytes.
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76       out    A  buffer  which contains the command’s output data according to
77              the device specification format.
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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
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87       #AUTHOR
88
89       Yishai Hadas <yishaih@mellanox.com>
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93                          mlx5dv_devx_qp[/cq/srq/wq/ind_tbl]_modify / query(3)
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