mlx5dv_devx_umem_reg, mlx5dv_devx_umem_dereg - Online Linux Manual PageSection : 3
Updated :
Source :
Note :
NAMEmlx5dv_devx_umem_reg - Register a user memory to be used by the devx interface mlx5dv_devx_umem_dereg - Deregister a devx umem object
SYNOPSIS
#include <infiniband/mlx5dv.h>
struct mlx5dv_devx_umem {
uint32_t umem_id;
};
struct mlx5dv_devx_umem *
mlx5dv_devx_umem_reg(struct ibv_context *context, void *addr, size_t size,
uint32_t access)
int mlx5dv_devx_umem_dereg(struct mlx5dv_devx_umem *dv_devx_umem)
DESCRIPTIONRegister or deregister a user memory to be used by the devx interface. The register verb exposes a UMEM DEVX object for user memory registration for DMA. The API to register the user memory gets as input the user address, length and access flags, and provides to the user as output an object which holds the UMEM ID returned by the firmware to this registered memory. The user will use that UMEM ID in device direct commands that use this memory instead of the physical addresses list, for example upon mlx5dv_devx_obj_create to create a QP.
ARGUMENTScontext
RDMA device context to create the action on.
addr The memory start address to register. size
The size of *addr* buffer.
access The desired memory protection attributes; it is either 0 or the bitwise OR of one or more of enum ibv_access_flags.
RETURN VALUEUpon success mlx5dv_devx_umem_reg will return a new struct mlx5dv_devx_umem object, on error NULL will be returned and errno will be set. mlx5dv_devx_umem_dereg returns 0 on success, or the value of errno on failure (which indicates the failure reason).
SEE ALSOmlx5dv_open_device(3), ibv_reg_mr(3), mlx5dv_devx_obj_create(3) #AUTHOR Yishai Hadas <yishaih@mellanox.com> 0
Johanes Gumabo
Data Size : 7,453 byte
man-mlx5dv_devx_umem_reg.3Build : 2024-12-05, 20:55 :
Visitor Screen : x
Visitor Counter ( page / site ) : 2 / 204,413
Visitor ID : :
Visitor IP : 3.21.12.122 :
Visitor Provider : AMAZON-02 :
Provider Position ( lat x lon ) : 39.962500 x -83.006100 : x
Provider Accuracy Radius ( km ) : 1000 :
Provider City : Columbus :
Provider Province : Ohio , : ,
Provider Country : United States :
Provider Continent : North America :
Visitor Recorder : Version :
Visitor Recorder : Library :
Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page : Library : lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page : Library : lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base : Version : Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base : Library : lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.