On 05/05/2011 01:50 PM, David Miller wrote:

From: David Ward<redacted>
Date: Thu, 28 Apr 2011 20:22:31 -0400

quoted

@@ -1521,11 +1521,13 @@ static inline int deliver_skb(struct sk_buff *skb,
  }

  /*
- *	Support routine. Sends outgoing frames to any network
- *	taps currently in use.
+ * dev_queue_xmit_nit - send outgoing frame to AF_PACKET sockets
+ *
+ * @skb: buffer to send
+ * @dev: network device that AF_PACKET sockets are attached to (if any)
   */

I really don't like exposing these kinds of internals for what is
largely a macvlan internal issue.  Please find a less intrustive way
to solve this problem.

Thanks.

What do you think about creating __dev_forward_skb, which takes as an 
additional parameter a device (or maybe a list of devices) whose taps 
should see this packet as it is forwarded, such as a macvlan lowerdev?  
This function would be able to call dev_queue_xmit_nit for (each of) 
these devices.

Since the list of current network taps (ptype_all) is static inside 
net/core/dev.c, some type of change has to be made to net/core/dev.c to 
fix this.

Thanks,

David