NAME
umad_get_port, umad_release_port - open and close an InfiniBand port
SYNOPSIS
#include <infiniband/umad.h>
int umad_get_port(char *ca_name, int portnum, umad_port_t *port);
int umad_release_port(umad_port_t *port);
DESCRIPTION
umad_get_port() fills the port structure with the IB port attributes
specified by ca_name and portnum , or the default port if ca_name is
NULL and portnum is zero. If only one of ca_name and portnum are
specified, the other is used as a filter. For example, passing a NULL
ca_name and 2 for the portnum means get a port from any of the local IB
devices, as long as it is the second port. Note that the library may
use some reference scheme to support port caching therefore
umad_release_port() should be called before the port structure can be
deallocated. The argument port is an umad_port_t struct, as specified
in <infiniband/umad.h>.
typedef struct umad_port {
char ca_name[UMAD_CA_NAME_LEN]; /* Name of the device */
int portnum; /* Physical port number */
uint base_lid; /* Base port LID */
uint lmc; /* LMC of LID */
uint sm_lid; /* SM LID */
uint sm_sl; /* SM service level */
uint state; /* Logical port state */
uint phys_state; /* Physical port state */
uint rate; /* Port link bit rate */
uint64_t capmask; /* Port capabilities */
uint64_t gid_prefix; /* Gid prefix of this port */
uint64_t port_guid; /* GUID of this port */
} umad_port_t;
umad_release_port() releases the resources that were allocated by the
umad_get_port() function for the specified IB port.
RETURN VALUE
umad_get_port() and umad_release_port() return 0 on success, and a
negative value on error.
AUTHORS
Hal Rosenstock <halr@voltaire.com>
Dotan Barak <dotanb@mellanox.co.il>