vlan: deliver packets received with VLAN acceleration to network taps

When VLAN header stripping is used, packets currently bypass packet
sockets (and other network taps) completely. For locally existing
VLANs, they appear directly on the VLAN device, for unknown VLANs
they are silently dropped.

Add a new function netif_nit_deliver() to deliver incoming packets
to all network interface taps and use it in __vlan_hwaccel_rx() to
make VLAN packets visible on the underlying device.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b54ec16dfbda..ba5c4639ea91 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1165,6 +1165,7 @@ extern int		netif_rx(struct sk_buff *skb);
 extern int              netif_rx_ni(struct sk_buff *skb);
 #define HAVE_NETIF_RECEIVE_SKB 1
 extern int              netif_receive_skb(struct sk_buff *skb);
+extern void             netif_nit_deliver(struct sk_buff *skb);
 extern int              dev_valid_name(const char *name);
 extern int              dev_ioctl(struct net *net, unsigned int cmd, void __user *);
 extern int              dev_ethtool(struct net *net, struct ifreq *);