RDMA_JOIN_MULTICAST(3) Librdmacm Programmer's Manual RDMA_JOIN_MULTICAST(3)NAMErdma_join_multicast - Joins a multicast group.
SYNOPSIS
#include <rdma/rdma_cma.h>
int rdma_join_multicast (struct rdma_cm_id *id, struct sockaddr *addr,
void *context);
ARGUMENTS
id Communication identifier associated with the request.
addr Multicast address identifying the group to join.
context User-defined context associated with the join request.
DESCRIPTION
Joins a multicast group and attaches an associated QP to the group.
NOTES
Before joining a multicast group, the rdma_cm_id must be bound to an
RDMA device by calling rdma_bind_addr or rdma_resolve_addr. Use of
rdma_resolve_addr requires the local routing tables to resolve the mul‐
ticast address to an RDMA device, unless a specific source address is
provided. The user must call rdma_leave_multicast to leave the multi‐
cast group and release any multicast resources. After the join opera‐
tion completes, any associated QP is automatically attached to the mul‐
ticast group, and the join context is returned to the user through the
private_data field in the rdma_cm_event.
SEE ALSOrdma_leave_multicast(3), rdma_bind_addr(3), rdma_resolve_addr(3),
rdma_create_qp(3), rdma_get_cm_event(3)librdmacm 2008-01-02 RDMA_JOIN_MULTICAST(3)
