ibv_create_comp_channel - create or destroy a completion event channel
#include <infiniband/verbs.h> struct ibv_comp_channel *ibv_create_comp_channel(struct ibv_context *context); int ibv_destroy_comp_channel(struct ibv_comp_channel *channel);
Libibverbs Programmer's Manual IBV_CREATE_COMP_CHANNEL(3) NAME ibv_create_comp_channel, ibv_destroy_comp_channel - create or destroy a completion event channel SYNOPSIS #include <infiniband/verbs.h> struct ibv_comp_channel *ibv_create_comp_channel(struct ibv_context *context); int ibv_destroy_comp_channel(struct ibv_comp_channel *channel); DESCRIPTION ibv_create_comp_channel() creates a completion event channel for the RDMA device context context. ibv_destroy_comp_channel() destroys the completion event channel chan- nel. RETURN VALUE ibv_create_comp_channel() returns a pointer to the created completion event channel, or NULL if the request fails. ibv_destroy_comp_channel() returns 0 on success, or the value of errno on failure (which indicates 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 A "completion channel" is an abstraction introduced by libibverbs that does not exist in the InfiniBand Architecture verbs specification or RDMA Protocol Verbs Specification. A completion channel is essentially file descriptor that is used to deliver completion notifications to a userspace process. When a completion event is generated for a comple- tion queue (CQ), the event is delivered via the completion channel attached to that CQ. This may be useful to steer completion events to different threads by using multiple completion channels. ibv_destroy_comp_channel() fails if any CQs are still associated with the completion event channel being destroyed. Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. 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-1.3.10.2.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/. SEE ALSO ibv_open_device(3), ibv_create_cq(3), ibv_get_cq_event(3) AUTHORS Dotan Barak <dotanba@gmail.com> libibverbs 2006-10-31 IBV_CREATE_COMP_CHANNEL(3)