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RDMA_CREATE_ID

RDMA_CREATE_ID

Section: Librdmacm Programmer's Manual (3) Updated: 2007-08-06
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NAME

rdma_create_id - Allocate a communication identifier.  

SYNOPSIS

#include <rdma/rdma_cma.h>

int rdma_create_id (struct rdma_event_channel *channel, struct rdma_cm_id **id, void *context, enum rdma_port_space ps);  

ARGUMENTS

channel
The communication channel that events associated with the allocated rdma_cm_id will be reported on.
id
A reference where the allocated communication identifier will be returned.
context
User specified context associated with the rdma_cm_id.
ps
RDMA port space.
 

DESCRIPTION

Creates an identifier that is used to track communication information.  

NOTES

Rdma_cm_id's are conceptually equivalent to a socket for RDMA communication. The difference is that RDMA communication requires explicitly binding to a specified RDMA device before communication can occur, and most operations are asynchronous in nature. Communication events on an rdma_cm_id are reported through the associated event channel. Users must release the rdma_cm_id by calling rdma_destroy_id.  

PORT SPACE

Details of the services provided by the different port spaces are outlined below.
RDMA_PS_TCP
Provides reliable, connection-oriented QP communication. Unlike TCP, the RDMA port space provides message, not stream, based communication.
RDMA_PS_UDP
Provides unreliable, connectionless QP communication. Supports both datagram and multicast communication.
 

SEE ALSO

rdma_cm(7), rdma_create_event_channel(3), rdma_destroy_id(3), rdma_get_devices(3), rdma_bind_addr(3), rdma_resolve_addr(3), rdma_connect(3), rdma_listen(3), rdma_set_option(3)


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
NOTES
PORT SPACE
SEE ALSO

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Time: 21:53:56 GMT, April 16, 2011