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authorDavid S. Miller <davem@davemloft.net>2011-01-28 03:00:37 +0300
committerDavid S. Miller <davem@davemloft.net>2011-01-28 03:00:37 +0300
commit8571a19c4ac140f1a507f3e7eb716892afa27109 (patch)
tree55ef6a0ab68d6388177d3290a7fd6bc3f12a381f /net/wireless
parentaae7c47311659e5150b740d61c4be418198239fa (diff)
parent8d8d3fdc0d42be0ba75be227465773a54bb48a0b (diff)
downloadlinux-8571a19c4ac140f1a507f3e7eb716892afa27109.tar.xz
Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/reg.c6
-rw-r--r--net/wireless/util.c36
-rw-r--r--net/wireless/wext-compat.c5
3 files changed, 29 insertions, 18 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 37693b6ef23a..c565689f0b9f 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1801,9 +1801,9 @@ void regulatory_hint_disconnect(void)
static bool freq_is_chan_12_13_14(u16 freq)
{
- if (freq == ieee80211_channel_to_frequency(12) ||
- freq == ieee80211_channel_to_frequency(13) ||
- freq == ieee80211_channel_to_frequency(14))
+ if (freq == ieee80211_channel_to_frequency(12, IEEE80211_BAND_2GHZ) ||
+ freq == ieee80211_channel_to_frequency(13, IEEE80211_BAND_2GHZ) ||
+ freq == ieee80211_channel_to_frequency(14, IEEE80211_BAND_2GHZ))
return true;
return false;
}
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 7620ae2fcf18..4ed065d8bb51 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -29,29 +29,37 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
}
EXPORT_SYMBOL(ieee80211_get_response_rate);
-int ieee80211_channel_to_frequency(int chan)
+int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band)
{
- if (chan < 14)
- return 2407 + chan * 5;
-
- if (chan == 14)
- return 2484;
-
- /* FIXME: 802.11j 17.3.8.3.2 */
- return (chan + 1000) * 5;
+ /* see 802.11 17.3.8.3.2 and Annex J
+ * there are overlapping channel numbers in 5GHz and 2GHz bands */
+ if (band == IEEE80211_BAND_5GHZ) {
+ if (chan >= 182 && chan <= 196)
+ return 4000 + chan * 5;
+ else
+ return 5000 + chan * 5;
+ } else { /* IEEE80211_BAND_2GHZ */
+ if (chan == 14)
+ return 2484;
+ else if (chan < 14)
+ return 2407 + chan * 5;
+ else
+ return 0; /* not supported */
+ }
}
EXPORT_SYMBOL(ieee80211_channel_to_frequency);
int ieee80211_frequency_to_channel(int freq)
{
+ /* see 802.11 17.3.8.3.2 and Annex J */
if (freq == 2484)
return 14;
-
- if (freq < 2484)
+ else if (freq < 2484)
return (freq - 2407) / 5;
-
- /* FIXME: 802.11j 17.3.8.3.2 */
- return freq/5 - 1000;
+ else if (freq >= 4910 && freq <= 4980)
+ return (freq - 4000) / 5;
+ else
+ return (freq - 5000) / 5;
}
EXPORT_SYMBOL(ieee80211_frequency_to_channel);
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 3e5dbd4e4cd5..7f1f4ec49041 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -267,9 +267,12 @@ int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq)
* -EINVAL for impossible things.
*/
if (freq->e == 0) {
+ enum ieee80211_band band = IEEE80211_BAND_2GHZ;
if (freq->m < 0)
return 0;
- return ieee80211_channel_to_frequency(freq->m);
+ if (freq->m > 14)
+ band = IEEE80211_BAND_5GHZ;
+ return ieee80211_channel_to_frequency(freq->m, band);
} else {
int i, div = 1000000;
for (i = 0; i < freq->e; i++)