IF_OPER_UP
dev->operstate = IF_OPER_UP;
return operstate == IF_OPER_UP ||
return IF_OPER_UP;
if (operstate == IF_OPER_UP)
if (operstate == IF_OPER_UP)
case IF_OPER_UP:
operstate = IF_OPER_UP;
netif_set_operstate(dev, IF_OPER_UP);