nl80211: Add frequency configuration (including HT40)

This patch adds new NL80211_CMD_SET_WIPHY attributes
NL80211_ATTR_WIPHY_FREQ and NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET to allow
userspace to set the operating channel (e.g., hostapd for AP mode).

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 16423f94801b..7a7a6c176dc5 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1095,6 +1095,18 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
         return 0;
 }
 
+static int ieee80211_set_channel(struct wiphy *wiphy,
+                                 struct ieee80211_channel *chan,
+                                 enum nl80211_sec_chan_offset sec_chan_offset)
+{
+        struct ieee80211_local *local = wiphy_priv(wiphy);
+
+        local->oper_channel = chan;
+        local->oper_sec_chan_offset = sec_chan_offset;
+
+        return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+}
+
 struct cfg80211_ops mac80211_config_ops = {
         .add_virtual_intf = ieee80211_add_iface,
         .del_virtual_intf = ieee80211_del_iface,
@@ -1122,4 +1134,5 @@ struct cfg80211_ops mac80211_config_ops = {
 #endif
         .change_bss = ieee80211_change_bss,
         .set_txq_params = ieee80211_set_txq_params,
+        .set_channel = ieee80211_set_channel,
 };