fi_control man page
fi_control — Perform an operation on a fabric resource.
#include <rdma/fabric.h> int fi_control(struct fid *fid, int command, void *arg);
fid : Fabric resource
command : Operation to perform
arg : Optional argument to the command
The fi_control operation is used to perform one or more operations on a fabric resource. Conceptually, fi_control is similar to the POSIX fcntl routine. The exact behavior of using fi_control depends on the fabric resource being operated on, the specified command, and any provided arguments for the command. For specific details, see the fabric resource specific help pages noted below.
fi_endpoint(3), fi_cm(3), fi_cntr(3), fi_cq(3), fi_eq(3),