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[net80211] don't update quiet time counter values every probe request.

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The quiet time counter update is happening each time the IE is added,
which also means it happens for each quiet time IE addition to the probe
response.

Only update the countdown if we request ie (ie, beacon updates.)
This commit is contained in:
Adrian Chadd 2017-02-03 06:04:06 +00:00
parent ea319c839b
commit ce4552cd1a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=313137
1 changed files with 15 additions and 8 deletions
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23
sys/net80211/ieee80211_output.c
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@ -2016,16 +2016,23 @@ ieee80211_add_supportedchannels(uint8_t *frm, struct ieee80211com *ic)
* Add an 11h Quiet time element to a frame.
*/
static uint8_t *
ieee80211_add_quiet(uint8_t *frm, struct ieee80211vap *vap)
ieee80211_add_quiet(uint8_t *frm, struct ieee80211vap *vap, int update)
{
struct ieee80211_quiet_ie *quiet = (struct ieee80211_quiet_ie *) frm;
quiet->quiet_ie = IEEE80211_ELEMID_QUIET;
quiet->len = 6;
if (vap->iv_quiet_count_value == 1)
vap->iv_quiet_count_value = vap->iv_quiet_count;
else if (vap->iv_quiet_count_value > 1)
vap->iv_quiet_count_value--;
/*
* Only update every beacon interval - otherwise probe responses
* would update the quiet count value.
*/
if (update) {
if (vap->iv_quiet_count_value == 1)
vap->iv_quiet_count_value = vap->iv_quiet_count;
else if (vap->iv_quiet_count_value > 1)
vap->iv_quiet_count_value--;
}
if (vap->iv_quiet_count_value == 0) {
/* value 0 is reserved as per 802.11h standerd */
@ -2812,7 +2819,7 @@ ieee80211_alloc_proberesp(struct ieee80211_node *bss, int legacy)
if (IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) &&
(vap->iv_flags_ext & IEEE80211_FEXT_DFS)) {
if (vap->iv_quiet)
frm = ieee80211_add_quiet(frm, vap);
frm = ieee80211_add_quiet(frm, vap, 0);
}
}
if (IEEE80211_IS_CHAN_ANYG(bss->ni_chan))
@ -3161,7 +3168,7 @@ ieee80211_beacon_construct(struct mbuf *m, uint8_t *frm,
if (IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) &&
(vap->iv_flags_ext & IEEE80211_FEXT_DFS)) {
if (vap->iv_quiet)
frm = ieee80211_add_quiet(frm,vap);
frm = ieee80211_add_quiet(frm,vap, 0);
}
} else
bo->bo_quiet = frm;
@ -3596,7 +3603,7 @@ ieee80211_beacon_update(struct ieee80211_node *ni, struct mbuf *m, int mcast)
if (IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) &&
(vap->iv_flags_ext & IEEE80211_FEXT_DFS) ){
if (vap->iv_quiet)
ieee80211_add_quiet(bo->bo_quiet, vap);
ieee80211_add_quiet(bo->bo_quiet, vap, 1);
}
if (isset(bo->bo_flags, IEEE80211_BEACON_ERP)) {
/*