net: make vlan ndo_vlan_rx_[add/kill]_vid return error value

Let caller know the result of adding/removing vlan id to/from vlan
filter.

In some drivers I make those functions to just return 0. But in those
where there is able to see if hw setup went correctly, return value is
set appropriately.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 files changed, 57 insertions, 29 deletions

diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index 82f4ef14225..053f01289ef 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -169,8 +169,8 @@ static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
 static bool e1000_vlan_used(struct e1000_adapter *adapter);
 static void e1000_vlan_mode(struct net_device *netdev,
 			    netdev_features_t features);
-static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
-static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
+static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
+static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
 static void e1000_restore_vlan(struct e1000_adapter *adapter);
 
 #ifdef CONFIG_PM
@@ -4604,7 +4604,7 @@ static void e1000_vlan_mode(struct net_device *netdev,
 		e1000_irq_enable(adapter);
 }
 
-static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -4613,7 +4613,7 @@ static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	if ((hw->mng_cookie.status &
 	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
 	    (vid == adapter->mng_vlan_id))
-		return;
+		return 0;
 
 	if (!e1000_vlan_used(adapter))
 		e1000_vlan_filter_on_off(adapter, true);
@@ -4625,9 +4625,11 @@ static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	e1000_write_vfta(hw, index, vfta);
 
 	set_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
-static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -4648,6 +4650,8 @@ static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 
 	if (!e1000_vlan_used(adapter))
 		e1000_vlan_filter_on_off(adapter, false);
+
+	return 0;
 }
 
 static void e1000_restore_vlan(struct e1000_adapter *adapter)
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 93ae0c26d43..90953b4d6bf 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2522,7 +2522,7 @@ clean_rx:
 	return work_done;
 }
 
-static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -2532,7 +2532,7 @@ static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	if ((adapter->hw.mng_cookie.status &
 	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
 	    (vid == adapter->mng_vlan_id))
-		return;
+		return 0;
 
 	/* add VID to filter table */
 	if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
@@ -2543,9 +2543,11 @@ static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	}
 
 	set_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
-static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -2556,7 +2558,7 @@ static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 	    (vid == adapter->mng_vlan_id)) {
 		/* release control to f/w */
 		e1000e_release_hw_control(adapter);
-		return;
+		return 0;
 	}
 
 	/* remove VID from filter table */
@@ -2568,6 +2570,8 @@ static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 	}
 
 	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 143cfebe318..89d576ce577 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -148,8 +148,8 @@ static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
 static void igb_tx_timeout(struct net_device *);
 static void igb_reset_task(struct work_struct *);
 static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features);
-static void igb_vlan_rx_add_vid(struct net_device *, u16);
-static void igb_vlan_rx_kill_vid(struct net_device *, u16);
+static int igb_vlan_rx_add_vid(struct net_device *, u16);
+static int igb_vlan_rx_kill_vid(struct net_device *, u16);
 static void igb_restore_vlan(struct igb_adapter *);
 static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8);
 static void igb_ping_all_vfs(struct igb_adapter *);
@@ -6491,7 +6491,7 @@ static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features)
 	igb_rlpml_set(adapter);
 }
 
-static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+static int igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct igb_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -6504,9 +6504,11 @@ static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	igb_vfta_set(hw, vid, true);
 
 	set_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
-static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+static int igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct igb_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -6521,6 +6523,8 @@ static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 		igb_vfta_set(hw, vid, false);
 
 	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
 static void igb_restore_vlan(struct igb_adapter *adapter)
diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
index c358973ce41..fd3da3076c2 100644
--- a/drivers/net/ethernet/intel/igbvf/netdev.c
+++ b/drivers/net/ethernet/intel/igbvf/netdev.c
@@ -1176,18 +1176,20 @@ static void igbvf_set_rlpml(struct igbvf_adapter *adapter)
 	e1000_rlpml_set_vf(hw, max_frame_size);
 }
 
-static void igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+static int igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct igbvf_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
 
-	if (hw->mac.ops.set_vfta(hw, vid, true))
+	if (hw->mac.ops.set_vfta(hw, vid, true)) {
 		dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid);
-	else
-		set_bit(vid, adapter->active_vlans);
+		return -EINVAL;
+	}
+	set_bit(vid, adapter->active_vlans);
+	return 0;
 }
 
-static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+static int igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct igbvf_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
@@ -1197,11 +1199,13 @@ static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 	if (!test_bit(__IGBVF_DOWN, &adapter->state))
 		igbvf_irq_enable(adapter);
 
-	if (hw->mac.ops.set_vfta(hw, vid, false))
+	if (hw->mac.ops.set_vfta(hw, vid, false)) {
 		dev_err(&adapter->pdev->dev,
 		        "Failed to remove vlan id %d\n", vid);
-	else
-		clear_bit(vid, adapter->active_vlans);
+		return -EINVAL;
+	}
+	clear_bit(vid, adapter->active_vlans);
+	return 0;
 }
 
 static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index 247cf9219e0..c573655f330 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -101,8 +101,8 @@ static void ixgb_tx_timeout_task(struct work_struct *work);
 
 static void ixgb_vlan_strip_enable(struct ixgb_adapter *adapter);
 static void ixgb_vlan_strip_disable(struct ixgb_adapter *adapter);
-static void ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
-static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
+static int ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
+static int ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
 static void ixgb_restore_vlan(struct ixgb_adapter *adapter);
 
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -2217,7 +2217,7 @@ ixgb_vlan_strip_disable(struct ixgb_adapter *adapter)
 	IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl);
 }
 
-static void
+static int
 ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct ixgb_adapter *adapter = netdev_priv(netdev);
@@ -2230,9 +2230,11 @@ ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	vfta |= (1 << (vid & 0x1F));
 	ixgb_write_vfta(&adapter->hw, index, vfta);
 	set_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
-static void
+static int
 ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct ixgb_adapter *adapter = netdev_priv(netdev);
@@ -2245,6 +2247,8 @@ ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 	vfta &= ~(1 << (vid & 0x1F));
 	ixgb_write_vfta(&adapter->hw, index, vfta);
 	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
 static void
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 1b28ed9d8cc..5d94ce1c0fc 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -3044,7 +3044,7 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
 	hw->mac.ops.enable_rx_dma(hw, rxctrl);
 }
 
-static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+static int ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 	struct ixgbe_hw *hw = &adapter->hw;
@@ -3053,9 +3053,11 @@ static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	/* add VID to filter table */
 	hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
 	set_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
-static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 	struct ixgbe_hw *hw = &adapter->hw;
@@ -3064,6 +3066,8 @@ static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 	/* remove VID from filter table */
 	hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
 	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 5d1a6439816..891162d1610 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1403,7 +1403,7 @@ static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
 	}
 }
 
-static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+static int ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 {
 	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 	struct ixgbe_hw *hw = &adapter->hw;
@@ -1412,9 +1412,11 @@ static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
 	if (hw->mac.ops.set_vfta)
 		hw->mac.ops.set_vfta(hw, vid, 0, true);
 	set_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
-static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+static int ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 {
 	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 	struct ixgbe_hw *hw = &adapter->hw;
@@ -1423,6 +1425,8 @@ static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
 	if (hw->mac.ops.set_vfta)
 		hw->mac.ops.set_vfta(hw, vid, 0, false);
 	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
 }
 
 static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter)