mac80211: make remain_on_channel() op pass vif param

Drivers (e.g. wl12xx) might need to know the vif
to roc on (mainly in order to configure the
rx filters correctly).

Add the vif to the op params, and update the current
users (iwlwifi) to use the new api.

Signed-off-by: Eliad Peller <eliad@wizery.com>
[fix hwsim]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/iwlwifi/dvm/mac80211.c

@@ -1032,6 +1032,7 @@ done:
 }
 
 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
+				     struct ieee80211_vif *vif,
 				     struct ieee80211_channel *channel,
 				     enum nl80211_channel_type channel_type,
 				     int duration)

drivers/net/wireless/mac80211_hwsim.c

@@ -1453,6 +1453,7 @@ static void hw_roc_done(struct work_struct *work)
 }
 
 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
+			      struct ieee80211_vif *vif,
 			      struct ieee80211_channel *chan,
 			      enum nl80211_channel_type channel_type,
 			      int duration)

include/net/mac80211.h

@@ -2530,6 +2530,7 @@ struct ieee80211_ops {
 	int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant);
 
 	int (*remain_on_channel)(struct ieee80211_hw *hw,
+				 struct ieee80211_vif *vif,
 				 struct ieee80211_channel *chan,
 				 enum nl80211_channel_type channel_type,
 				 int duration);

net/mac80211/cfg.c

@@ -2287,7 +2287,8 @@ static int ieee80211_start_roc_work(struct ieee80211_local *local,
 	if (!duration)
 		duration = 10;
 
-	ret = drv_remain_on_channel(local, channel, channel_type, duration);
+	ret = drv_remain_on_channel(local, sdata, channel, channel_type,
+				    duration);
 	if (ret) {
 		kfree(roc);
 		return ret;
@@ -2298,7 +2299,8 @@ static int ieee80211_start_roc_work(struct ieee80211_local *local,
 
  out_check_combine:
 	list_for_each_entry(tmp, &local->roc_list, list) {
-		if (tmp->chan != channel || tmp->chan_type != channel_type)
+		if (tmp->chan != channel || tmp->chan_type != channel_type ||
+		    tmp->sdata != sdata)
 			continue;
 
 		/*

net/mac80211/driver-ops.h

@@ -704,6 +704,7 @@ static inline int drv_get_antenna(struct ieee80211_local *local,
 }
 
 static inline int drv_remain_on_channel(struct ieee80211_local *local,
+					struct ieee80211_sub_if_data *sdata,
 					struct ieee80211_channel *chan,
 					enum nl80211_channel_type chantype,
 					unsigned int duration)
@@ -712,9 +713,9 @@ static inline int drv_remain_on_channel(struct ieee80211_local *local,
 
 	might_sleep();
 
-	trace_drv_remain_on_channel(local, chan, chantype, duration);
-	ret = local->ops->remain_on_channel(&local->hw, chan, chantype,
-					    duration);
+	trace_drv_remain_on_channel(local, sdata, chan, chantype, duration);
+	ret = local->ops->remain_on_channel(&local->hw, &sdata->vif,
+					    chan, chantype, duration);
 	trace_drv_return_int(local, ret);
 
 	return ret;

net/mac80211/offchannel.c

@@ -283,7 +283,7 @@ void ieee80211_start_next_roc(struct ieee80211_local *local)
 		if (!duration)
 			duration = 10;
 
-		ret = drv_remain_on_channel(local, roc->chan,
+		ret = drv_remain_on_channel(local, roc->sdata, roc->chan,
 					    roc->chan_type,
 					    duration);
 

net/mac80211/trace.h

@@ -1019,13 +1019,16 @@ TRACE_EVENT(drv_get_antenna,
 );
 
 TRACE_EVENT(drv_remain_on_channel,
-	TP_PROTO(struct ieee80211_local *local, struct ieee80211_channel *chan,
+	TP_PROTO(struct ieee80211_local *local,
+		 struct ieee80211_sub_if_data *sdata,
+		 struct ieee80211_channel *chan,
 		 enum nl80211_channel_type chantype, unsigned int duration),
 
-	TP_ARGS(local, chan, chantype, duration),
+	TP_ARGS(local, sdata, chan, chantype, duration),
 
 	TP_STRUCT__entry(
 		LOCAL_ENTRY
+		VIF_ENTRY
 		__field(int, center_freq)
 		__field(int, channel_type)
 		__field(unsigned int, duration)
@@ -1033,14 +1036,16 @@ TRACE_EVENT(drv_remain_on_channel,
 
 	TP_fast_assign(
 		LOCAL_ASSIGN;
+		VIF_ASSIGN;
 		__entry->center_freq = chan->center_freq;
 		__entry->channel_type = chantype;
 		__entry->duration = duration;
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " freq:%dMHz duration:%dms",
-		LOCAL_PR_ARG, __entry->center_freq, __entry->duration
+		LOCAL_PR_FMT  VIF_PR_FMT " freq:%dMHz duration:%dms",
+		LOCAL_PR_ARG, VIF_PR_ARG,
+		__entry->center_freq, __entry->duration
 	)
 );