mac80211: refactor monitor representation in sdata

Insert the u32 monitor flags variable in a new structure
that represents a monitor interface.
This will allow to add more configuration variables to
that structure which will happen in an upcoming change.

Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/cfg.c

@@ -39,7 +39,7 @@ static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 
 	if (type == NL80211_IFTYPE_MONITOR && flags) {
 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
-		sdata->u.mntr_flags = *flags;
+		sdata->u.mntr.flags = *flags;
 	}
 
 	return wdev;
@@ -89,11 +89,11 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
 			 *	cooked_mntrs, monitor and all fif_* counters
 			 *	reconfigure hardware
 			 */
-			if ((*flags & mask) != (sdata->u.mntr_flags & mask))
+			if ((*flags & mask) != (sdata->u.mntr.flags & mask))
 				return -EBUSY;
 
 			ieee80211_adjust_monitor_flags(sdata, -1);
-			sdata->u.mntr_flags = *flags;
+			sdata->u.mntr.flags = *flags;
 			ieee80211_adjust_monitor_flags(sdata, 1);
 
 			ieee80211_configure_filter(local);
@@ -103,7 +103,7 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
 			 * and ieee80211_do_open take care of "everything"
 			 * mentioned in the comment above.
 			 */
-			sdata->u.mntr_flags = *flags;
+			sdata->u.mntr.flags = *flags;
 		}
 	}
 

net/mac80211/driver-ops.c

@@ -62,7 +62,7 @@ int drv_add_interface(struct ieee80211_local *local,
 	if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 		    (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
 		     !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
-		     !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))))
+		     !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))))
 		return -EINVAL;
 
 	trace_drv_add_interface(local, sdata);

net/mac80211/ieee80211_i.h

@@ -824,6 +824,10 @@ struct txq_info {
 	struct ieee80211_txq txq;
 };
 
+struct ieee80211_if_mntr {
+	u32 flags;
+};
+
 struct ieee80211_sub_if_data {
 	struct list_head list;
 
@@ -922,7 +926,7 @@ struct ieee80211_sub_if_data {
 		struct ieee80211_if_ibss ibss;
 		struct ieee80211_if_mesh mesh;
 		struct ieee80211_if_ocb ocb;
-		u32 mntr_flags;
+		struct ieee80211_if_mntr mntr;
 	} u;
 
 #ifdef CONFIG_MAC80211_DEBUGFS

net/mac80211/iface.c

@@ -188,7 +188,7 @@ static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr,
 			continue;
 
 		if (iter->vif.type == NL80211_IFTYPE_MONITOR &&
-		    !(iter->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+		    !(iter->u.mntr.flags & MONITOR_FLAG_ACTIVE))
 			continue;
 
 		m = iter->vif.addr;
@@ -217,7 +217,7 @@ static int ieee80211_change_mac(struct net_device *dev, void *addr)
 		return -EBUSY;
 
 	if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
-	    !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+	    !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
 		check_dup = false;
 
 	ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup);
@@ -357,7 +357,7 @@ void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
 				    const int offset)
 {
 	struct ieee80211_local *local = sdata->local;
-	u32 flags = sdata->u.mntr_flags;
+	u32 flags = sdata->u.mntr.flags;
 
 #define ADJUST(_f, _s)	do {					\
 	if (flags & MONITOR_FLAG_##_f)				\
@@ -589,12 +589,12 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 		}
 		break;
 	case NL80211_IFTYPE_MONITOR:
-		if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+		if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) {
 			local->cooked_mntrs++;
 			break;
 		}
 
-		if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) {
+		if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) {
 			res = drv_add_interface(local, sdata);
 			if (res)
 				goto err_stop;
@@ -926,7 +926,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		/* no need to tell driver */
 		break;
 	case NL80211_IFTYPE_MONITOR:
-		if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+		if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) {
 			local->cooked_mntrs--;
 			break;
 		}
@@ -1012,7 +1012,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		ieee80211_recalc_idle(local);
 		mutex_unlock(&local->mtx);
 
-		if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+		if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
 			break;
 
 		/* fall through */
@@ -1444,7 +1444,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 	case NL80211_IFTYPE_MONITOR:
 		sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP;
 		sdata->dev->netdev_ops = &ieee80211_monitorif_ops;
-		sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
+		sdata->u.mntr.flags = MONITOR_FLAG_CONTROL |
 				      MONITOR_FLAG_OTHER_BSS;
 		break;
 	case NL80211_IFTYPE_WDS:

net/mac80211/rx.c

@@ -567,7 +567,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 		if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
 			continue;
 
-		if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)
+		if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES)
 			continue;
 
 		if (!ieee80211_sdata_running(sdata))
@@ -3147,7 +3147,7 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx,
 			continue;
 
 		if (sdata->vif.type != NL80211_IFTYPE_MONITOR ||
-		    !(sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
+		    !(sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES))
 			continue;
 
 		if (prev_dev) {

net/mac80211/status.c

@@ -709,7 +709,7 @@ void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
 			if (!ieee80211_sdata_running(sdata))
 				continue;
 
-			if ((sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) &&
+			if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) &&
 			    !send_to_cooked)
 				continue;
 

net/mac80211/tx.c

@@ -1643,7 +1643,7 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
 
 	switch (sdata->vif.type) {
 	case NL80211_IFTYPE_MONITOR:
-		if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) {
+		if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) {
 			vif = &sdata->vif;
 			break;
 		}

net/mac80211/util.c

@@ -598,7 +598,7 @@ static void __iterate_interfaces(struct ieee80211_local *local,
 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 		switch (sdata->vif.type) {
 		case NL80211_IFTYPE_MONITOR:
-			if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+			if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
 				continue;
 			break;
 		case NL80211_IFTYPE_AP_VLAN: