func newInterfaces(ctx *C.struct_ibv_context) {
var deviceAttr C.struct_ibv_device_attr
errno := C.ibv_query_device(ctx, &deviceAttr)
if errno != 0 {
return
}
pd := C.ibv_alloc_pd(ctx)
if pd == nil {
panic(newError("ibv_alloc_pd", -1))
}
pds[pd] = true
for port := C.uint8_t(1); port <= deviceAttr.phys_port_cnt; port++ {
var portAttr C.struct_ibv_port_attr
errno := C.ibv_query_port(ctx, port, &portAttr)
if errno != 0 {
continue
}
var gid C.union_ibv_gid
errno = C.ibv_query_gid(ctx, port, 0, &gid)
if errno != 0 {
continue
}
// last 8 bytes of GID is the GUID
guid := net.HardwareAddr(gid[8:])
iface := &Interface{ctx, pd, uint8(port), &deviceAttr, guid}
interfaces = append(interfaces, iface)
guidToInterface[string([]byte(guid))] = iface
}
}
func (iface *Interface) Active() bool {
var portAttr C.struct_ibv_port_attr
errno := C.ibv_query_port(iface.ctx, C.uint8_t(iface.port), &portAttr)
if errno != 0 {
return false
}
return portAttr.state == C.IBV_PORT_ACTIVE
}
func (iface *Interface) Lid() uint16 {
var portAttr C.struct_ibv_port_attr
errno := C.ibv_query_port(iface.ctx, C.uint8_t(iface.port), &portAttr)
if errno != 0 {
return 0
}
return uint16(portAttr.lid)
}