rdma_create_id - Allocate a communication identifier.
#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);
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. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+-----------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+-----------------------+ |Availability | network/open-fabrics | +---------------+-----------------------+ |Stability | Pass-through volatile | +---------------+-----------------------+ NOTES Rdma_cm_id's are conceptually equivalent to a socket for RDMA communi- cation. 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 communication events on an rdma_cm_id are reported through the associated event chan- nel. 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 out- lined 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. RDMA_PS_IB Provides for any IB services (UD, UC, RC, XRC, etc.). 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) This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from ['https://www.openfabrics.org/down- loads/ibutils/ibutils-1.5.7-0.2.gbd7e502.tar.gz', 'https://www.openfab- rics.org/downloads/libibverbs/libibverbs-1.1.8.tar.gz', 'https://www.openfabrics.org/downloads/libmlx4/libmlx4-1.0.6.tar.gz', 'https://www.openfabrics.org/downloads/libsdp/lib- sdp-1.1.108-0.15.gd7fdb72.tar.gz', 'https://www.openfabrics.org/down- loads/management/infiniband-diags-1.6.5.tar.gz', 'https://www.openfab- rics.org/downloads/management/libibmad-1.3.12.tar.gz', 'https://www.openfabrics.org/downloads/management/libibu- mad-184.108.40.206.tar.gz', 'https://www.openfabrics.org/downloads/manage- ment/opensm-3.3.19.tar.gz', 'https://www.openfabrics.org/down- loads/perftest/perftest-1.3.0-0.42.gf350d3d.tar.gz', 'https://www.open- fabrics.org/downloads/qperf/qperf-0.4.9.tar.gz', 'https://www.openfab- rics.org/downloads/rdmacm/librdmacm-1.0.21.tar.gz', 'https://www.open- fabrics.org/downloads/rds-tools/rds-tools-2.0.4.tar.gz'] Further information about this software can be found on the open source community website at http://www.openfabrics.org/. librdmacm 2010-07-19 RDMA_CREATE_ID(3)