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'\" te .\" -*- nroff -*- .\" .TH IBV_ATTACH_MCAST 3 2006-10-31 libibverbs "Libibverbs Programmer's Manual" .SH "NAME" ibv_attach_mcast, ibv_detach_mcast \- attach and detach a queue pair (QPs) to/from a multicast group .SH "SYNOPSIS" .nf .B #include <infiniband/verbs.h> .sp .BI "int ibv_attach_mcast(struct ibv_qp " "*qp" ", const union ibv_gid " "*gid" ", .BI " uint16_t " "lid" "); .sp .BI "int ibv_detach_mcast(struct ibv_qp " "*qp" ", const union ibv_gid " "*gid" ", .BI " uint16_t " "lid" "); .fi .SH "DESCRIPTION" .B ibv_attach_mcast() attaches the QP .I qp to the multicast group having MGID .I gid and MLID .I lid\fR. .PP .B ibv_detach_mcast() detaches the QP .I qp to the multicast group having MGID .I gid and MLID .I lid\fR. .SH "RETURN VALUE" .B ibv_attach_mcast() and .B ibv_detach_mcast() returns 0 on success, or the value of errno on failure (which indicates the failure reason). .\" Oracle has added the ARC stability level to this manual page .SH ATTRIBUTES See .BR attributes (7) for descriptions of the following attributes: .sp .TS box; cbp-1 | cbp-1 l | l . ATTRIBUTE TYPE ATTRIBUTE VALUE = Availability network/open-fabrics = Stability Pass-through volatile .TE .PP .SH "NOTES" Only QPs of Transport Service Type .BR IBV_QPT_UD may be attached to multicast groups. .PP If a QP is attached to the same multicast group multiple times, the QP will still receive a single copy of a multicast message. .PP In order to receive multicast messages, a join request for the multicast group must be sent to the subnet administrator (SA), so that the fabric's multicast routing is configured to deliver messages to the local port. .\" Oracle has added source availability information to this manual page 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/downloads/ibutils/ibutils-1.5.7-0.2.gbd7e502.tar.gz', 'https://www.openfabrics.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/libsdp-1.1.108-0.15.gd7fdb72.tar.gz', 'https://www.openfabrics.org/downloads/management/infiniband-diags-1.6.5.tar.gz', 'https://www.openfabrics.org/downloads/management/libibmad-1.3.12.tar.gz', 'https://www.openfabrics.org/downloads/management/libibumad-1.3.10.2.tar.gz', 'https://www.openfabrics.org/downloads/management/opensm-3.3.19.tar.gz', 'https://www.openfabrics.org/downloads/perftest/perftest-1.3.0-0.42.gf350d3d.tar.gz', 'https://www.openfabrics.org/downloads/qperf/qperf-0.4.9.tar.gz', 'https://www.openfabrics.org/downloads/rdmacm/librdmacm-1.0.21.tar.gz', 'https://www.openfabrics.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/. .SH "SEE ALSO" .BR ibv_create_qp (3) .SH "AUTHORS" .TP Dotan Barak <dotanba@gmail.com>