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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6

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This commit is contained in:
David S. Miller
2010-11-18 11:56:09 -08:00
parent 93908d1926 3bf30b56c4
commit 07bfa524d4
9 changed files with 78 additions and 8 deletions
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net/wireless/chan.c
+54
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@@ -44,6 +44,38 @@ rdev_freq_to_chan(struct cfg80211_registered_device *rdev,
return chan;
}
static bool can_beacon_sec_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type)
{
struct ieee80211_channel *sec_chan;
int diff;
switch (channel_type) {
case NL80211_CHAN_HT40PLUS:
diff = 20;
break;
case NL80211_CHAN_HT40MINUS:
diff = -20;
break;
default:
return false;
}
sec_chan = ieee80211_get_channel(wiphy, chan->center_freq + diff);
if (!sec_chan)
return false;
/* we'll need a DFS capability later */
if (sec_chan->flags & (IEEE80211_CHAN_DISABLED |
IEEE80211_CHAN_PASSIVE_SCAN |
IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_RADAR))
return false;
return true;
}
int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, int freq,
enum nl80211_channel_type channel_type)
@@ -68,6 +100,28 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
if (!chan)
return -EINVAL;
/* Both channels should be able to initiate communication */
if (wdev && (wdev->iftype == NL80211_IFTYPE_ADHOC ||
wdev->iftype == NL80211_IFTYPE_AP ||
wdev->iftype == NL80211_IFTYPE_AP_VLAN ||
wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
switch (channel_type) {
case NL80211_CHAN_HT40PLUS:
case NL80211_CHAN_HT40MINUS:
if (!can_beacon_sec_chan(&rdev->wiphy, chan,
channel_type)) {
printk(KERN_DEBUG
"cfg80211: Secondary channel not "
"allowed to initiate communication\n");
return -EINVAL;
}
break;
default:
break;
}
}
result = rdev->ops->set_channel(&rdev->wiphy,
wdev ? wdev->netdev : NULL,
chan, channel_type);