Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

rdma_migrate_id(3) [centos man page]

RDMA_MIGRATE_ID(3)					   Librdmacm Programmer's Manual					RDMA_MIGRATE_ID(3)

NAME
rdma_migrate_id - Move a communication identifer to a different event channel. SYNOPSIS
#include <rdma/rdma_cma.h> int rdma_migrate_id (struct rdma_cm_id *id, struct rdma_event_channel *channel); ARGUMENTS
id An existing communication identifier to migrate. channel The communication channel that events associated with the allocated rdma_cm_id will be reported on. May be NULL. DESCRIPTION
Migrates a communication identifier to a different event channel. RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason. NOTES
This routine migrates a communication identifier to the specified event channel and moves any pending events associated with the rdma_cm_id to the new channel. Users should not poll for events on the rdma_cm_id's current event channel or invoke other routines on the rdma_cm_id while migrating between channels. This call will block while there are any unacknowledged events on the current event channel. If the channel parameter is NULL, the specified rdma_cm_id will be placed into synchronous operation mode. All calls on the id will block until the operation completes. SEE ALSO
rdma_cm(7), rdma_create_event_channel(3), rdma_create_id(3), rdma_get_cm_event(3) librdmacm 2007-11-13 RDMA_MIGRATE_ID(3)

Check Out this Related Man Page

RDMA_CREATE_ID(3)					   Librdmacm Programmer's Manual					 RDMA_CREATE_ID(3)

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. This may be NULL. 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. RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason. 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. Asynchronous communica- tion events on an rdma_cm_id are reported through the associated event channel. If the channel parameter is NULL, the rdma_cm_id will be placed into synchronous operation. While operating synchronously, calls that result in an event will block until the operation completes. The event will be returned to the user through the rdma_cm_id structure, and be available for access until another rdma_cm call is made. 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 commu- nication. 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_con- nect(3), rdma_listen(3), rdma_set_option(3) librdmacm 2010-07-19 RDMA_CREATE_ID(3)
Man Page

Featured Tech Videos