From 863981e96738983919de841ec669e157e6bdaeb0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Sun, 11 Sep 2016 04:34:46 -0300
Subject: Linux-libre 4.7.1-gnu

---
 net/bridge/br_sysfs_br.c | 101 ++++++++++++++++++++++++-----------------------
 1 file changed, 51 insertions(+), 50 deletions(-)

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

diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 6b8091407..beb47071e 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -43,7 +43,14 @@ static ssize_t store_bridge_parm(struct device *d,
 	if (endp == buf)
 		return -EINVAL;
 
+	if (!rtnl_trylock())
+		return restart_syscall();
+
 	err = (*set)(br, val);
+	if (!err)
+		netdev_state_change(br->dev);
+	rtnl_unlock();
+
 	return err ? err : len;
 }
 
@@ -101,15 +108,7 @@ static ssize_t ageing_time_show(struct device *d,
 
 static int set_ageing_time(struct net_bridge *br, unsigned long val)
 {
-	int ret;
-
-	if (!rtnl_trylock())
-		return restart_syscall();
-
-	ret = br_set_ageing_time(br, val);
-	rtnl_unlock();
-
-	return ret;
+	return br_set_ageing_time(br, val);
 }
 
 static ssize_t ageing_time_store(struct device *d,
@@ -128,27 +127,18 @@ static ssize_t stp_state_show(struct device *d,
 }
 
 
+static int set_stp_state(struct net_bridge *br, unsigned long val)
+{
+	br_stp_set_enabled(br, val);
+
+	return 0;
+}
+
 static ssize_t stp_state_store(struct device *d,
 			       struct device_attribute *attr, const char *buf,
 			       size_t len)
 {
-	struct net_bridge *br = to_bridge(d);
-	char *endp;
-	unsigned long val;
-
-	if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
-		return -EPERM;
-
-	val = simple_strtoul(buf, &endp, 0);
-	if (endp == buf)
-		return -EINVAL;
-
-	if (!rtnl_trylock())
-		return restart_syscall();
-	br_stp_set_enabled(br, val);
-	rtnl_unlock();
-
-	return len;
+	return store_bridge_parm(d, buf, len, set_stp_state);
 }
 static DEVICE_ATTR_RW(stp_state);
 
@@ -160,29 +150,22 @@ static ssize_t group_fwd_mask_show(struct device *d,
 	return sprintf(buf, "%#x\n", br->group_fwd_mask);
 }
 
-
-static ssize_t group_fwd_mask_store(struct device *d,
-				    struct device_attribute *attr,
-				    const char *buf,
-				    size_t len)
+static int set_group_fwd_mask(struct net_bridge *br, unsigned long val)
 {
-	struct net_bridge *br = to_bridge(d);
-	char *endp;
-	unsigned long val;
-
-	if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
-		return -EPERM;
-
-	val = simple_strtoul(buf, &endp, 0);
-	if (endp == buf)
-		return -EINVAL;
-
 	if (val & BR_GROUPFWD_RESTRICTED)
 		return -EINVAL;
 
 	br->group_fwd_mask = val;
 
-	return len;
+	return 0;
+}
+
+static ssize_t group_fwd_mask_store(struct device *d,
+				    struct device_attribute *attr,
+				    const char *buf,
+				    size_t len)
+{
+	return store_bridge_parm(d, buf, len, set_group_fwd_mask);
 }
 static DEVICE_ATTR_RW(group_fwd_mask);
 
@@ -328,6 +311,7 @@ static ssize_t group_addr_store(struct device *d,
 
 	br->group_addr_set = true;
 	br_recalculate_fwd_mask(br);
+	netdev_state_change(br->dev);
 
 	rtnl_unlock();
 
@@ -336,17 +320,17 @@ static ssize_t group_addr_store(struct device *d,
 
 static DEVICE_ATTR_RW(group_addr);
 
+static int set_flush(struct net_bridge *br, unsigned long val)
+{
+	br_fdb_flush(br);
+	return 0;
+}
+
 static ssize_t flush_store(struct device *d,
 			   struct device_attribute *attr,
 			   const char *buf, size_t len)
 {
-	struct net_bridge *br = to_bridge(d);
-
-	if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
-		return -EPERM;
-
-	br_fdb_flush(br);
-	return len;
+	return store_bridge_parm(d, buf, len, set_flush);
 }
 static DEVICE_ATTR_WO(flush);
 
@@ -747,6 +731,22 @@ static ssize_t default_pvid_store(struct device *d,
 	return store_bridge_parm(d, buf, len, br_vlan_set_default_pvid);
 }
 static DEVICE_ATTR_RW(default_pvid);
+
+static ssize_t vlan_stats_enabled_show(struct device *d,
+				       struct device_attribute *attr,
+				       char *buf)
+{
+	struct net_bridge *br = to_bridge(d);
+	return sprintf(buf, "%u\n", br->vlan_stats_enabled);
+}
+
+static ssize_t vlan_stats_enabled_store(struct device *d,
+					struct device_attribute *attr,
+					const char *buf, size_t len)
+{
+	return store_bridge_parm(d, buf, len, br_vlan_set_stats);
+}
+static DEVICE_ATTR_RW(vlan_stats_enabled);
 #endif
 
 static struct attribute *bridge_attrs[] = {
@@ -794,6 +794,7 @@ static struct attribute *bridge_attrs[] = {
 	&dev_attr_vlan_filtering.attr,
 	&dev_attr_vlan_protocol.attr,
 	&dev_attr_default_pvid.attr,
+	&dev_attr_vlan_stats_enabled.attr,
 #endif
 	NULL
 };
-- 
cgit v1.2.3-54-g00ecf