HelenOS sources

CTRL_SLU          375 uspace/drv/nic/e1k/e1k.c 	if (ctrl & CTRL_SLU) {
CTRL_SLU          376 uspace/drv/nic/e1k/e1k.c 		ctrl &= ~(CTRL_SLU);
CTRL_SLU          384 uspace/drv/nic/e1k/e1k.c 		ctrl |= CTRL_SLU;
CTRL_SLU         1785 uspace/drv/nic/e1k/e1k.c 	ctrl |= CTRL_SLU;
CTRL_SLU         1808 uspace/drv/nic/e1k/e1k.c 	ctrl &= ~CTRL_SLU;
HelenOS homepage, sources at GitHub