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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
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MLX4DV_INIT_OBJ(3) Library Functions Manual MLX4DV_INIT_OBJ(3)
mlx4dv_init_obj - Initialize mlx4 direct verbs object from
ibv_xxx structures
#include <infiniband/mlx4dv.h>
int mlx4dv_init_obj(struct mlx4dv_obj *obj, uint64_t obj_type);
mlx4dv_init_obj() This function will initialize mlx4dv_xxx
structs based on supplied type. The information for
initialization is taken from ibv_xx structs supplied as part of
input.
Request information of CQ marks its owned by direct verbs for all
consumer index related actions. The initialization type can be
combination of several types together.
struct mlx4dv_qp {
uint32_t *rdb;
uint32_t *sdb;
struct {
uint32_t wqe_cnt;
int wqe_shift;
int offset;
} sq;
struct {
uint32_t wqe_cnt;
int wqe_shift;
int offset;
} rq;
struct {
void *buf;
size_t length;
} buf;
uint64_t comp_mask; /* Use enum mlx4dv_qp_comp_mask */
off_t uar_mmap_offset; /* If MLX4DV_QP_MASK_UAR_MMAP_OFFSET is set in comp_mask, this will contain the mmap offset of *sdb* */
};
struct mlx4dv_cq {
struct {
void *buf;
size_t length;
} buf;
uint32_t cqe_cnt;
uint32_t cqn;
uint32_t *set_ci_db;
uint32_t *arm_db;
int arm_sn;
int cqe_size;
uint64_t comp_mask; /* Use enum mlx4dv_cq_comp_mask */
void *cq_uar;
};
struct mlx4dv_srq {
struct {
void *buf;
size_t length;
} buf;
int wqe_shift;
int head;
int tail;
uint32_t *db;
uint64_t comp_mask;
};
struct mlx4dv_rwq {
__be32 *rdb;
struct {
uint32_t wqe_cnt;
int wqe_shift;
int offset;
} rq;
struct {
void *buf;
size_t length;
} buf;
uint64_t comp_mask;
};
struct mlx4dv_obj {
struct {
struct ibv_qp *in;
struct mlx4dv_qp *out;
} qp;
struct {
struct ibv_cq *in;
struct mlx4dv_cq *out;
} cq;
};
enum mlx4dv_obj_type {
MLX4DV_OBJ_QP = 1 << 0,
MLX4DV_OBJ_CQ = 1 << 1,
MLX4DV_OBJ_SRQ = 1 << 2,
};
0 on success or the value of errno on failure (which indicates
the failure reason).
* Compatibility masks (comp_mask) are in/out fields.
mlx4dv(7)
Maor Gottlieb <maorg@mellanox.com>
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
linux-rdma@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2024-06-10.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
1.0.0 2017-02-02 MLX4DV_INIT_OBJ(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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