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This patch removes a check in ifconfig which disables HT/40 channels

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on frequency bands with DFS. All Atheros chipsets >= AR9001 support
radar event detection on HT40 extension channels.

This should be a chipset specific item rather than enforced in the
regulatory domain database.

In addition, it's irrelevant for STA mode, as the radar detection is
done by the access point, not the STA.

Approved by:	re (kib)
This commit is contained in:
Adrian Chadd 2011-07-20 05:59:28 +00:00
parent 6f16ec31f7
commit 2168aaa506
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=224224
1 changed files with 0 additions and 12 deletions
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12
sbin/ifconfig/ifieee80211.c
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@ -2027,18 +2027,6 @@ regdomain_addchans(struct ieee80211req_chaninfo *ci,
"HT40 channel\n", freq);
continue;
}
/*
* DFS and HT40 don't mix. This should be
* expressed in the regdomain database but
* just in case enforce it here.
*/
if ((chanFlags & IEEE80211_CHAN_HT40) &&
(flags & IEEE80211_CHAN_DFS)) {
if (verbose)
printf("%u: skip, HT40+DFS "
"not permitted\n", freq);
continue;
}
/* NB: HT attribute comes from caller */
flags &= ~IEEE80211_CHAN_HT;
flags |= chanFlags & IEEE80211_CHAN_HT;