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RDMA_DEREG_MR(3) - Linux man page online | Library functions

Deregisters a registered memory region.

Chapter
2010-07-19
RDMA_DEREG_MR(3) Librdmacm Programmer's Manual RDMA_DEREG_MR(3)

NAME

rdma_dereg_mr - deregisters a registered memory region.

SYNOPSIS

#include <rdma/rdma_verbs.h> int rdma_dereg_mr (struct ibv_mr *mr);

ARGUMENTS

mr A reference to a registered memory buffer.

DESCRIPTION

Deregisters a memory buffer that had been registered for RDMA or message operations. A user should call rdma_dereg_mr for all registered memory associated with an rdma_cm_id before destroying the rdma_cm_id.

RETURN VALUE

Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.

NOTES

All memory registered with an rdma_cm_id is associated with the protection domain associ‐ ated with the id. Users must deregister all registered memory before the protection domain can be destroyed.

SEE ALSO

rdma_cm(7), rdma_create_id(3), rdma_create_ep(3), rdma_destroy_id(3), rdma_destroy_ep(3), rdma_reg_msgs(3), rdma_reg_read(3), rdma_reg_write(3), ibv_reg_mr(3), ibv_dereg_mr(3)
librdmacm 2010-07-19 RDMA_DEREG_MR(3)
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rdma_dereg_mr(3) referred by rdma_cm(7)
refer to ibv_reg_mr(3) | rdma_cm(7) | rdma_create_ep(3) | rdma_create_id(3) | rdma_destroy_ep(3) | rdma_destroy_id(3) | rdma_reg_msgs(3) | rdma_reg_read(3) | rdma_reg_write(3)
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