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use the DSPARMS ie to find the home channel for off-channel frames

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Reviewed by:	thompsa
MFC after:	1 week
This commit is contained in:
Sam Leffler 2007-11-23 05:58:37 +00:00
parent a557c018f5
commit 8039c240fd
1 changed files with 12 additions and 11 deletions
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23
sys/net80211/ieee80211_scan_sta.c
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@ -282,20 +282,21 @@ found:
* off-channel; this can cause us to attempt an
* assocation on the wrong channel.
*/
if (ise->se_chan == NULL || !offchan) {
if (offchan) {
struct ieee80211_channel *c;
/*
* NB: this is not right when the frame is received
* off-channel but se_chan is assumed set by code
* elsewhere so we must assign something; the scan
* entry should be ignored because the rssi will be
* zero (because the frames are received off-channel).
*
* We could locate the correct channel using sp->chan
* but it's not clear we should join an ap that we
* never see on-channel during a scan.
* Off-channel, locate the home/bss channel for the sta
* using the value broadcast in the DSPARMS ie.
*/
c = ieee80211_find_channel_byieee(ic, sp->bchan,
sp->curchan->ic_flags);
if (c == NULL && ise->se_chan == NULL) {
/* should not happen, pick something */
c = sp->curchan;
}
ise->se_chan = c;
} else
ise->se_chan = sp->curchan;
}
ise->se_fhdwell = sp->fhdwell;
ise->se_fhindex = sp->fhindex;
ise->se_erp = sp->erp;