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Break out the unicast/multicast TIM bit setting into "set something

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that indicates we have traffic" bit and a "do something if we have
traffic bit."

I'm going to be fleshing out this stuff more over time and it'll make
more sense to have it broken out into two pieces here.
This commit is contained in:
Adrian Chadd 2014-12-21 04:48:54 +00:00
parent 2c6179401b
commit 3b00b9a60a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=275983
1 changed files with 28 additions and 5 deletions
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33
sys/net80211/ieee80211_sta.c
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@ -1405,6 +1405,7 @@ sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0,
int ix = aid / NBBY;
int min = tim->tim_bitctl &~ 1;
int max = tim->tim_len + min - 4;
int tim_ucast = 0, tim_mcast = 0;
/*
* Only do this for unicast traffic in the TIM
@ -1414,20 +1415,42 @@ sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0,
*/
if (min <= ix && ix <= max &&
isset(tim->tim_bitmap - min, aid)) {
ieee80211_sta_tim_notify(vap, 1);
ic->ic_lastdata = ticks;
tim_ucast = 1;
}
/*
* XXX TODO: do a separate notification
* Do a separate notification
* for the multicast bit being set.
*/
#if 0
if (tim->tim_bitctl & 1) {
tim_mcast = 1;
}
/*
* If the TIM indicates there's traffic for
* us then get us out of STA mode powersave.
*/
if (tim_ucast == 1) {
/*
* Wake us out of SLEEP state if we're
* in it; and if we're doing bgscan
* then wake us out of STA powersave.
*/
ieee80211_sta_tim_notify(vap, 1);
/*
* This is preventing us from
* continuing a bgscan; because it
* tricks the contbgscan()
* routine to think there's always
* traffic for us.
*
* I think we need both an RX and
* TX ic_lastdata field.
*/
ic->ic_lastdata = ticks;
}
#endif
ni->ni_dtim_count = tim->tim_count;
ni->ni_dtim_period = tim->tim_period;