rdma_set_option (3) - Linux Manuals

rdma_set_option: Set communication options for an rdma_cm_id.

Command to display rdma_set_option manual in Linux: $ man 3 rdma_set_option

rdma_set_option - Set communication options for an rdma_cm_id.

#include <rdma/rdma_cma.h>

int rdma_set_option (struct rdma_cm_id *id, int level, int optname, void *optval, size_t optlen);

id: RDMA identifier.
level: Protocol level of the option to set.
optname: Name of the option, relative to the level, to set.
optval: Reference to the option data. The data is dependent on the level and optname.
optlen: The size of the %optval buffer.

Sets communication options for an rdma_cm_id. This call is used to override the default system settings.

Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.

Option details may be found in the relevent header files.