From 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Tue, 15 Dec 2015 14:52:16 -0300
Subject: Linux-libre 4.3.2-gnu

---
 net/bridge/br_vlan.c | 70 ++++++++++++++++++++++++++++++++++------------------
 1 file changed, 46 insertions(+), 24 deletions(-)

(limited to 'net/bridge/br_vlan.c')

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 0d41f8183..5f5a02b49 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -117,10 +117,11 @@ out_filt:
 	return err;
 }
 
-static void __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
-			   u16 vid)
+static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
+			  u16 vid)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;
+	int err = 0;
 
 	/* If driver uses VLAN ndo ops, use 8021q to delete vid
 	 * on device, otherwise try switchdev ops to delete vid.
@@ -137,8 +138,12 @@ static void __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
 			},
 		};
 
-		switchdev_port_obj_del(dev, &vlan_obj);
+		err = switchdev_port_obj_del(dev, &vlan_obj);
+		if (err == -EOPNOTSUPP)
+			err = 0;
 	}
+
+	return err;
 }
 
 static int __vlan_del(struct net_port_vlans *v, u16 vid)
@@ -151,7 +156,11 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid)
 
 	if (v->port_idx) {
 		struct net_bridge_port *p = v->parent.port;
-		__vlan_vid_del(p->dev, p->br, vid);
+		int err;
+
+		err = __vlan_vid_del(p->dev, p->br, vid);
+		if (err)
+			return err;
 	}
 
 	clear_bit(vid, v->vlan_bitmap);
@@ -468,41 +477,40 @@ void br_recalculate_fwd_mask(struct net_bridge *br)
 					      ~(1u << br->group_addr[5]);
 }
 
-int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
+int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
 {
-	if (!rtnl_trylock())
-		return restart_syscall();
-
 	if (br->vlan_enabled == val)
-		goto unlock;
+		return 0;
 
 	br->vlan_enabled = val;
 	br_manage_promisc(br);
 	recalculate_group_addr(br);
 	br_recalculate_fwd_mask(br);
 
-unlock:
+	return 0;
+}
+
+int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
+{
+	if (!rtnl_trylock())
+		return restart_syscall();
+
+	__br_vlan_filter_toggle(br, val);
 	rtnl_unlock();
+
 	return 0;
 }
 
-int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
+int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
 {
 	int err = 0;
 	struct net_bridge_port *p;
 	struct net_port_vlans *pv;
-	__be16 proto, oldproto;
+	__be16 oldproto;
 	u16 vid, errvid;
 
-	if (val != ETH_P_8021Q && val != ETH_P_8021AD)
-		return -EPROTONOSUPPORT;
-
-	if (!rtnl_trylock())
-		return restart_syscall();
-
-	proto = htons(val);
 	if (br->vlan_proto == proto)
-		goto unlock;
+		return 0;
 
 	/* Add VLANs for the new proto to the device filter. */
 	list_for_each_entry(p, &br->port_list, list) {
@@ -533,9 +541,7 @@ int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
 			vlan_vid_del(p->dev, oldproto, vid);
 	}
 
-unlock:
-	rtnl_unlock();
-	return err;
+	return 0;
 
 err_filt:
 	errvid = vid;
@@ -551,7 +557,23 @@ err_filt:
 			vlan_vid_del(p->dev, proto, vid);
 	}
 
-	goto unlock;
+	return err;
+}
+
+int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
+{
+	int err;
+
+	if (val != ETH_P_8021Q && val != ETH_P_8021AD)
+		return -EPROTONOSUPPORT;
+
+	if (!rtnl_trylock())
+		return restart_syscall();
+
+	err = __br_vlan_set_proto(br, htons(val));
+	rtnl_unlock();
+
+	return err;
 }
 
 static bool vlan_default_pvid(struct net_port_vlans *pv, u16 vid)
-- 
cgit v1.2.3-54-g00ecf