mac80211: implement hardware offload for remain-on-channel

This allows drivers to support remain-on-channel
offload if they implement smarter timing or need
to use a device implementation like iwlwifi.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 479c35e160e..5b3fd5add7a 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -365,6 +365,7 @@ enum mac80211_tx_control_flags {
         IEEE80211_TX_INTFL_NL80211_FRAME_TX     = BIT(21),
         IEEE80211_TX_CTL_LDPC                   = BIT(22),
         IEEE80211_TX_CTL_STBC                   = BIT(23) | BIT(24),
+        IEEE80211_TX_CTL_TX_OFFCHAN             = BIT(25),
 };
 
 #define IEEE80211_TX_CTL_STBC_SHIFT             23
@@ -1824,6 +1825,12 @@ struct ieee80211_ops {
         int (*napi_poll)(struct ieee80211_hw *hw, int budget);
         int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant);
         int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant);
+
+        int (*remain_on_channel)(struct ieee80211_hw *hw,
+                                 struct ieee80211_channel *chan,
+                                 enum nl80211_channel_type channel_type,
+                                 int duration);
+        int (*cancel_remain_on_channel)(struct ieee80211_hw *hw);
 };
 
 /**
@@ -2729,6 +2736,18 @@ void ieee80211_request_smps(struct ieee80211_vif *vif,
  */
 void ieee80211_key_removed(struct ieee80211_key_conf *key_conf);
 
+/**
+ * ieee80211_ready_on_channel - notification of remain-on-channel start
+ * @hw: pointer as obtained from ieee80211_alloc_hw()
+ */
+void ieee80211_ready_on_channel(struct ieee80211_hw *hw);
+
+/**
+ * ieee80211_remain_on_channel_expired - remain_on_channel duration expired
+ * @hw: pointer as obtained from ieee80211_alloc_hw()
+ */
+void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw);
+
 /* Rate control API */
 
 /**