09-22-2005
Also keep in mind that Linux uses all available memory whenever it can for buffers and such. Memory not used is memory sitting around doing nothing, afterall. But it gives up the buffers when something else wants the memory. So don't panic when you see 100% of memory being used.
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LEARN ABOUT DEBIAN
rdma_reg_msgs
RDMA_REG_MSGS(3) Librdmacm Programmer's Manual RDMA_REG_MSGS(3)
NAME
rdma_reg_msgs - register data buffer(s) for sending or receiving messages.
SYNOPSIS
#include <rdma/rdma_verbs.h>
struct ibv_mr * rdma_reg_msgs (struct rdma_cm_id *id, void *addr, size_t length);
ARGUMENTS
id A reference to a communication identifier where the message buffer(s) will be used.
addr The address of the memory buffer(s) to register.
length The total length of the memory to register.
DESCRIPTION
Registers an array of memory buffers used for sending and receiving messages or for RDMA operations. Memory buffers registered using
rdma_reg_msgs may be posted to an rdma_cm_id using rdma_post_send or rdma_post_recv, or specified as the target of an RDMA read operation
or the source of an RDMA write reqeust.
RETURN VALUE
Returns a reference to the registered memory region on success, or NULL on error. If an error occurs, errno will be set to indicate the
failure reason.
NOTES
rdma_reg_msgs is used to register an array of data buffers that will be used send and/or receive messages on a queue pair associated with
an rdma_cm_id. The memory buffer is registered with the proteection domain associated with the idenfier. The start of the data buffer
array is specified through the addr parameter, and the total size of the array is given by length.
All data buffers should be registered before being posted as a work request. Users must deregister all registered memory by calling
rdma_dereg_mr.
SEE ALSO
rdma_cm(7), rdma_create_id(3), rdma_create_ep(3), rdma_reg_read(3), rdma_reg_write(3), ibv_reg_mr(3), ibv_dereg_mr(3), rdma_post_send(3),
rdma_post_recv(3), rdma_post_read(3), rdma_post_readv(3), rdma_post_write(3), rdma_post_writev(3)
librdmacm 2010-07-19 RDMA_REG_MSGS(3)