Commit 729e72a1 authored by stephen hemminger's avatar stephen hemminger Committed by David S. Miller

macvlan: receive multicast with local address

When implementing VRRP v2 using macvlan several problems were
discovered.  VRRP is weird in that all routers participating
in a redundant group use the same virtual MAC address.
Macvlan is a natural driver to use for this but it doesn't
work.  The problem is that packets with a macvlan device's
source address are not received.

The problem is actually a regression that date back almost 2 years now.
The original problems started with:

commit 618e1b74
Author: Arnd Bergmann <arnd@arndb.de>
Date:   Thu Nov 26 06:07:10 2009 +0000

    macvlan: implement bridge, VEPA and private mode

This patches restores the original 2.6.32 behavior. Allowing multicast
packets received with the VRRP source address to be received.
Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5ae7fa06
......@@ -192,6 +192,13 @@ static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb)
*/
macvlan_broadcast(skb, port, src->dev,
MACVLAN_MODE_VEPA);
else {
/* forward to original port. */
vlan = src;
ret = macvlan_broadcast_one(skb, vlan, eth, 0);
goto out;
}
return RX_HANDLER_PASS;
}
......
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