commit bcf80ff562ba33be0e914a4bb011e3e67af4bc85
Author: Patrick McHardy <kaber@trash.net>
Date:   Tue Jul 15 14:48:37 2008 +0200

    netdrv intel: disable VLAN filtering in promiscous mode
    
    As discussed in this thread:
    
    http://www.mail-archive.com/netdev@vger.kernel.org/msg53976.html
    
    promiscous mode means to disable *all* filters. Currently only unicast
    and multicast filtering is disabled. This patch changes all Intel
    drivers to also disable VLAN filtering.
    
    Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 7aa458f..80e3a65 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2477,10 +2477,15 @@ e1000_set_rx_mode(struct net_device *netdev)
 
 	if (netdev->flags & IFF_PROMISC) {
 		rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
-	} else if (netdev->flags & IFF_ALLMULTI) {
-		rctl |= E1000_RCTL_MPE;
+		rctl &= ~E1000_RCTL_VFE;
 	} else {
-		rctl &= ~E1000_RCTL_MPE;
+		if (netdev->flags & IFF_ALLMULTI) {
+			rctl |= E1000_RCTL_MPE;
+		} else {
+			rctl &= ~E1000_RCTL_MPE;
+		}
+		if (adapter->vlgrp && adapter->hw.mac_type != e1000_ich8lan)
+			rctl |= E1000_RCTL_VFE;
 	}
 
 	uc_ptr = NULL;
@@ -4962,7 +4967,8 @@ e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
 		if (adapter->hw.mac_type != e1000_ich8lan) {
 			/* enable VLAN receive filtering */
 			rctl = E1000_READ_REG(&adapter->hw, RCTL);
-			rctl |= E1000_RCTL_VFE;
+			if (!(netdev->flags & IFF_PROMISC))
+				rctl |= E1000_RCTL_VFE;
 			rctl &= ~E1000_RCTL_CFIEN;
 			E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
 			e1000_update_mng_vlan(adapter);
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 80592bd..3fe6026 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -1792,7 +1792,8 @@ static void e1000_vlan_rx_register(struct net_device *netdev,
 		if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
 			/* enable VLAN receive filtering */
 			rctl = er32(RCTL);
-			rctl |= E1000_RCTL_VFE;
+			if (!(netdev->flags & IFF_PROMISC))
+				rctl |= E1000_RCTL_VFE;
 			rctl &= ~E1000_RCTL_CFIEN;
 			ew32(RCTL, rctl);
 			e1000_update_mng_vlan(adapter);
@@ -2230,11 +2231,16 @@ static void e1000_set_multi(struct net_device *netdev)
 
 	if (netdev->flags & IFF_PROMISC) {
 		rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
-	} else if (netdev->flags & IFF_ALLMULTI) {
-		rctl |= E1000_RCTL_MPE;
-		rctl &= ~E1000_RCTL_UPE;
+		rctl &= ~E1000_RCTL_VFE;
 	} else {
-		rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+		if (netdev->flags & IFF_ALLMULTI) {
+			rctl |= E1000_RCTL_MPE;
+			rctl &= ~E1000_RCTL_UPE;
+		} else {
+			rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+		}
+		if (adapter->vlgrp && adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
+			rctl |= E1000_RCTL_VFE;
 	}
 
 	ew32(RCTL, rctl);
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index aaed129..1ab8e3e 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -2268,14 +2268,18 @@ static void igb_set_multi(struct net_device *netdev)
 
 	rctl = rd32(E1000_RCTL);
 
-	if (netdev->flags & IFF_PROMISC)
+	if (netdev->flags & IFF_PROMISC) {
 		rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
-	else if (netdev->flags & IFF_ALLMULTI) {
-		rctl |= E1000_RCTL_MPE;
-		rctl &= ~E1000_RCTL_UPE;
-	} else
-		rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
-
+		rctl &= ~E1000_RCTL_VFE;
+	} else {
+		if (netdev->flags & IFF_ALLMULTI) {
+			rctl |= E1000_RCTL_MPE;
+			rctl &= ~E1000_RCTL_UPE;
+		} else
+			rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+		if (adapter->vlgrp)
+			rctl |= E1000_RCTL_VFE;
+	}
 	wr32(E1000_RCTL, rctl);
 
 	if (!netdev->mc_count) {
@@ -4220,7 +4224,8 @@ static void igb_vlan_rx_register(struct net_device *netdev,
 
 		/* enable VLAN receive filtering */
 		rctl = rd32(E1000_RCTL);
-		rctl |= E1000_RCTL_VFE;
+		if (!(netdev->flags & IFF_PROMISC))
+			rctl |= E1000_RCTL_VFE;
 		rctl &= ~E1000_RCTL_CFIEN;
 		wr32(E1000_RCTL, rctl);
 		igb_update_mng_vlan(adapter);
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index e83feaf..ec95cd4 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1053,11 +1053,16 @@ ixgb_set_multi(struct net_device *netdev)
 
 	if (netdev->flags & IFF_PROMISC) {
 		rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE);
-	} else if (netdev->flags & IFF_ALLMULTI) {
-		rctl |= IXGB_RCTL_MPE;
-		rctl &= ~IXGB_RCTL_UPE;
+		rctl &= ~IXGB_RCTL_VFE;
 	} else {
-		rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE);
+		if (netdev->flags & IFF_ALLMULTI) {
+			rctl |= IXGB_RCTL_MPE;
+			rctl &= ~IXGB_RCTL_UPE;
+		} else {
+			rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE);
+		}
+		if (adapter->vlgrp)
+			rctl |= IXGB_RCTL_VFE;
 	}
 
 	if (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) {
@@ -2104,7 +2109,8 @@ ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
 		/* enable VLAN receive filtering */
 
 		rctl = IXGB_READ_REG(&adapter->hw, RCTL);
-		rctl |= IXGB_RCTL_VFE;
+		if (!(netdev->flags & IFF_PROMISC))
+			rctl |= IXGB_RCTL_VFE;
 		rctl &= ~IXGB_RCTL_CFIEN;
 		IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
 	} else {