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authorJohannes Berg <johannes@sipsolutions.net>2009-04-19 21:24:32 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-04-22 16:57:17 -0400
commit04a773ade0680d862b479d7219973df60f7a3834 (patch)
treefc759eb79099fefd7f1329bcb2b703008cb0adfe /net/wireless/wext-compat.c
parent691597cb26f236ac7471f1adf925a134c86799d6 (diff)
cfg80211/nl80211: add IBSS API
This adds IBSS API along with (preliminary) wext handlers. The wext handlers can only do IBSS so you need to call them from your own wext handlers if the mode is IBSS. The nl80211 API requires * an SSID * a channel (frequency) for the case that a new IBSS has to be created It optionally supports * a flag to fix the channel * a fixed BSSID The cfg80211 code also takes care to leave the IBSS before the netdev is set down. If wireless extensions are used, it also caches values when the interface is down and instructs the driver to join when the interface is set up. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/wext-compat.c')
-rw-r--r--net/wireless/wext-compat.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 6fd7bf7b448..57eaea26b67 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -285,3 +285,33 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
}
}
EXPORT_SYMBOL(cfg80211_wext_siwmlme);
+
+
+/**
+ * cfg80211_wext_freq - get wext frequency for non-"auto"
+ * @wiphy: the wiphy
+ * @freq: the wext freq encoding
+ *
+ * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
+ */
+struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
+ struct iw_freq *freq)
+{
+ if (freq->e == 0) {
+ if (freq->m < 0)
+ return NULL;
+ else
+ return ieee80211_get_channel(wiphy,
+ ieee80211_channel_to_frequency(freq->m));
+ } else {
+ int i, div = 1000000;
+ for (i = 0; i < freq->e; i++)
+ div /= 10;
+ if (div > 0)
+ return ieee80211_get_channel(wiphy, freq->m / div);
+ else
+ return ERR_PTR(-EINVAL);
+ }
+
+}
+EXPORT_SYMBOL(cfg80211_wext_freq);