On 1/26/2012 4:38 AM, Victor Goldenshtein wrote:
New ieee80211_ap_process_chanswitch(), to handle a channel switch
request for AP/GO.
New 'post_switch_block_tx' parameter in 'ieee80211_channel_switch'
structure, which indicates whether transmission must be blocked after
the scheduled channel switch, it should be set if the target channel
is DFS channel.
New ieee80211_ap_ch_switch_complete_notify() which notifies upper
layers about channel switch complete event.
Shouldn't mac80211 have some non-offload implementation for this?
@@ -841,12 +841,16 @@ struct ieee80211_conf {
* the driver passed into mac80211.
* @block_tx: Indicates whether transmission must be blocked before the
* scheduled channel switch, as indicated by the AP.
+ * @post_switch_block_tx: Indicates whether transmission must be blocked after
+ * the scheduled channel switch, this should be set if the target channel
+ * is DFS channel.
Hmmm. This channel switch stuff here was really intended for client-side
channel switching initially ... and it should quite possibly be a
different mechanism?
+static int ieee80211_ap_process_chanswitch(struct wiphy *wiphy,
+ struct net_device *dev,
+ u32 count, bool block_tx,
+ bool post_switch_block_tx,
+ u32 new_freq)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_channel *new_ch;
+ struct ieee80211_channel_switch ch_switch;
+
+ new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
+ if (!new_ch || new_ch->flags& IEEE80211_CHAN_DISABLED) {
+ wiphy_debug(local->hw.wiphy,
+ "failed channel switch on freq: %d\n", new_freq);
+ return -EINVAL;
+ }
That code should obviously be in cfg80211.
@@ -2793,4 +2826,5 @@ struct cfg80211_ops mac80211_config_ops = {
.set_noack_map = ieee80211_set_noack_map,
.dfs_start_radar_detection = ieee80211_dfs_start_radar_detection,
.dfs_en_tx = ieee80211_dfs_en_tx,
+ .ap_channel_switch = ieee80211_ap_process_chanswitch,
why deviate from the ieee80211_ + callback_name scheme?
johannes
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