net: make use of helper netif_is_bridge_master()

Make use of netdev helper functions to improve code readability.
Replace 'dev->priv_flags & IFF_EBRIDGE' with netif_is_bridge_master(dev).
Signed-off-by: Kyungrok Chung <acadx0@gmail.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/batman-adv/multicast.c

@@ -89,7 +89,7 @@ static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface)
 	rcu_read_lock();
 	do {
 		upper = netdev_master_upper_dev_get_rcu(upper);
-	} while (upper && !(upper->priv_flags & IFF_EBRIDGE));
+	} while (upper && !netif_is_bridge_master(upper));
 
 	dev_hold(upper);
 	rcu_read_unlock();

net/bridge/br.c

@@ -36,7 +36,7 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v
 	bool changed_addr;
 	int err;
 
-	if (dev->priv_flags & IFF_EBRIDGE) {
+	if (netif_is_bridge_master(dev)) {
 		err = br_vlan_bridge_event(dev, event, ptr);
 		if (err)
 			return notifier_from_errno(err);
@@ -349,7 +349,7 @@ static void __net_exit br_net_exit(struct net *net)
 
 	rtnl_lock();
 	for_each_netdev(net, dev)
-		if (dev->priv_flags & IFF_EBRIDGE)
+		if (netif_is_bridge_master(dev))
 			br_dev_delete(dev, &list);
 
 	unregister_netdevice_many(&list);

net/bridge/br_fdb.c

@@ -825,7 +825,7 @@ int br_fdb_dump(struct sk_buff *skb,
 	struct net_bridge_fdb_entry *f;
 	int err = 0;
 
-	if (!(dev->priv_flags & IFF_EBRIDGE))
+	if (!netif_is_bridge_master(dev))
 		return err;
 
 	if (!filter_dev) {
@@ -1076,7 +1076,7 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 		return -EINVAL;
 	}
 
-	if (dev->priv_flags & IFF_EBRIDGE) {
+	if (netif_is_bridge_master(dev)) {
 		br = netdev_priv(dev);
 		vg = br_vlan_group(br);
 	} else {
@@ -1173,7 +1173,7 @@ int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 	struct net_bridge *br;
 	int err;
 
-	if (dev->priv_flags & IFF_EBRIDGE) {
+	if (netif_is_bridge_master(dev)) {
 		br = netdev_priv(dev);
 		vg = br_vlan_group(br);
 	} else {

net/bridge/br_if.c

@@ -471,7 +471,7 @@ int br_del_bridge(struct net *net, const char *name)
 	if (dev == NULL)
 		ret =  -ENXIO; 	/* Could not find device */
 
-	else if (!(dev->priv_flags & IFF_EBRIDGE)) {
+	else if (!netif_is_bridge_master(dev)) {
 		/* Attempt to delete non bridge device! */
 		ret = -EPERM;
 	}

net/bridge/br_ioctl.c

@@ -26,7 +26,7 @@ static int get_bridge_ifindices(struct net *net, int *indices, int num)
 	for_each_netdev_rcu(net, dev) {
 		if (i >= num)
 			break;
-		if (dev->priv_flags & IFF_EBRIDGE)
+		if (netif_is_bridge_master(dev))
 			indices[i++] = dev->ifindex;
 	}
 	rcu_read_unlock();

net/bridge/br_mdb.c

@@ -422,7 +422,7 @@ static int br_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 	cb->seq = net->dev_base_seq;
 
 	for_each_netdev_rcu(net, dev) {
-		if (dev->priv_flags & IFF_EBRIDGE) {
+		if (netif_is_bridge_master(dev)) {
 			struct net_bridge *br = netdev_priv(dev);
 			struct br_port_msg *bpm;
 
@@ -1016,7 +1016,7 @@ static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -ENODEV;
 	}
 
-	if (!(dev->priv_flags & IFF_EBRIDGE)) {
+	if (!netif_is_bridge_master(dev)) {
 		NL_SET_ERR_MSG_MOD(extack, "Device is not a bridge");
 		return -EOPNOTSUPP;
 	}

net/bridge/br_netfilter_hooks.c

@@ -968,7 +968,7 @@ static int brnf_device_event(struct notifier_block *unused, unsigned long event,
 	struct net *net;
 	int ret;
 
-	if (event != NETDEV_REGISTER || !(dev->priv_flags & IFF_EBRIDGE))
+	if (event != NETDEV_REGISTER || !netif_is_bridge_master(dev))
 		return NOTIFY_DONE;
 
 	ASSERT_RTNL();

net/bridge/br_netlink.c

@@ -106,7 +106,7 @@ static size_t br_get_link_af_size_filtered(const struct net_device *dev,
 		p = br_port_get_check_rcu(dev);
 		if (p)
 			vg = nbp_vlan_group_rcu(p);
-	} else if (dev->priv_flags & IFF_EBRIDGE) {
+	} else if (netif_is_bridge_master(dev)) {
 		br = netdev_priv(dev);
 		vg = br_vlan_group_rcu(br);
 	}
@@ -1050,7 +1050,7 @@ int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 
 	p = br_port_get_rtnl(dev);
 	/* We want to accept dev as bridge itself as well */
-	if (!p && !(dev->priv_flags & IFF_EBRIDGE))
+	if (!p && !netif_is_bridge_master(dev))
 		return -EINVAL;
 
 	err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);

net/core/rtnetlink.c

@@ -4384,7 +4384,7 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 					continue;
 
 				if (br_dev != netdev_master_upper_dev_get(dev) &&
-				    !(dev->priv_flags & IFF_EBRIDGE))
+				    !netif_is_bridge_master(dev))
 					continue;
 				cops = ops;
 			}