27c27
< __FBSDID("$FreeBSD: head/sys/net80211/ieee80211_power.c 257176 2013-10-26 17:58:36Z glebius $");
---
> __FBSDID("$FreeBSD: head/sys/net80211/ieee80211_power.c 264855 2014-04-24 01:39:53Z adrian $");
557a558,643
>
> /*
> * Handle being notified that we have data available for us in a TIM/ATIM.
> *
> * This may schedule a transition from _SLEEP -> _RUN if it's appropriate.
> */
> void
> ieee80211_sta_tim_notify(struct ieee80211vap *vap, int set)
> {
> /*
> * Schedule the driver state change. It'll happen at some point soon.
> * Since the hardware shouldn't know that we're running just yet
> * (and thus tell the peer that we're awake before we actually wake
> * up said hardware), we leave the actual node state transition
> * up to the transition to RUN.
> *
> * XXX TODO: verify that the transition to RUN will wake up the
> * BSS node!
> */
> IEEE80211_DPRINTF(vap, IEEE80211_MSG_POWER, "%s: TIM=%d\n", __func__, set);
> IEEE80211_LOCK(vap->iv_ic);
> if (set == 1 && vap->iv_state == IEEE80211_S_SLEEP) {
> ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
> }
> IEEE80211_UNLOCK(vap->iv_ic);
> }
>
> /*
> * Timer check on whether the VAP has had any transmit activity.
> *
> * This may schedule a transition from _RUN -> _SLEEP if it's appropriate.
> */
> void
> ieee80211_sta_ps_timer_check(struct ieee80211vap *vap)
> {
> struct ieee80211com *ic = vap->iv_ic;
>
> /* XXX lock assert */
>
> /* For no, only do this in STA mode */
> if (! (vap->iv_caps & IEEE80211_C_SWSLEEP))
> goto out;
>
> if (vap->iv_opmode != IEEE80211_M_STA)
> goto out;
>
> /* If we're not at run state, bail */
> if (vap->iv_state != IEEE80211_S_RUN)
> goto out;
>
> IEEE80211_DPRINTF(vap, IEEE80211_MSG_POWER,
> "%s: lastdata=%llu, ticks=%llu\n",
> __func__, (unsigned long long) ic->ic_lastdata,
> (unsigned long long) ticks);
>
> /* If powersave is disabled on the VAP, don't bother */
> if (! (vap->iv_flags & IEEE80211_F_PMGTON))
> goto out;
>
> /* If we've done any data within our idle interval, bail */
> /* XXX hard-coded to one second for now, ew! */
> if (time_after(ic->ic_lastdata + 500, ticks))
> goto out;
>
> /*
> * Signify we're going into power save and transition the
> * node to powersave.
> */
> if ((vap->iv_bss->ni_flags & IEEE80211_NODE_PWR_MGT) == 0)
> vap->iv_sta_ps(vap, 1);
>
> /*
> * XXX The driver has to handle the fact that we're going
> * to sleep but frames may still be transmitted;
> * hopefully it and/or us will do the right thing and mark any
> * transmitted frames with PWRMGT set to 1.
> */
> ieee80211_new_state_locked(vap, IEEE80211_S_SLEEP, 0);
>
> IEEE80211_DPRINTF(vap, IEEE80211_MSG_POWER,
> "%s: time delta=%d msec\n", __func__,
> (int) ticks_to_msecs(ticks - ic->ic_lastdata));
>
> out:
> return;
> }