Function nd6_llinfo_setstate

freebsd/netinet6/nd6.c:683–730

* Switch @lle state to new state optionally arming timers. * * Set noinline to be dtrace-friendly */

 * Set noinline to be dtrace-friendly
 */
__noinline void
nd6_llinfo_setstate(struct llentry *lle, int newstate)
{
	struct ifnet *ifp;
	int nd_gctimer, nd_delay;
	long delay, remtime;

	delay = 0;
	remtime = 0;

	switch (newstate) {
	case ND6_LLINFO_INCOMPLETE:
		ifp = lle->lle_tbl->llt_ifp;
		delay = (long)ND_IFINFO(ifp)->retrans * hz / 1000;
		break;
	case ND6_LLINFO_REACHABLE:
		if (!ND6_LLINFO_PERMANENT(lle)) {
			ifp = lle->lle_tbl->llt_ifp;
			delay = (long)ND_IFINFO(ifp)->reachable * hz;
		}
		break;
	case ND6_LLINFO_STALE:

		/*
		 * Notify fast path that we want to know if any packet
		 * is transmitted by setting r_skip_req.
		 */
		LLE_REQ_LOCK(lle);
		lle->r_skip_req = 1;
		LLE_REQ_UNLOCK(lle);
		nd_delay = V_nd6_delay;
		nd_gctimer = V_nd6_gctimer;

		delay = (long)(MIN(nd_gctimer, nd_delay)) * hz;
		remtime = (long)nd_gctimer * hz - delay;
		break;
	case ND6_LLINFO_DELAY:
		lle->la_asked = 0;
		delay = (long)V_nd6_delay * hz;
		break;
	}

	if (delay > 0)
		nd6_llinfo_settimer_locked(lle, delay);

	lle->lle_remtime = remtime;
	lle->ln_state = newstate;
}

/*
 * Timer-dependent part of nd state machine.