netdev - [PATCH net-next v5 6/6] vxlan: fdb: allow specifying multiple destinations for zero MAC

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Date:	Tue, 25 Jun 2013 16:01:56 +0300
From:	Mike Rapoport <mike.rapoport@...ellosystems.com>
To:	netdev@...r.kernel.org
Cc:	Stephen Hemminger <stephen@...workplumber.org>,
	David Stevens <dlstevens@...ibm.com>,
	Thomas Graf <tgraf@...g.ch>,
	Cong Wang <xiyou.wangcong@...il.com>,
	Mike Rapoport <mike.rapoport@...ellosystems.com>
Subject: [PATCH net-next v5 6/6] vxlan: fdb: allow specifying multiple destinations for zero MAC

The zero MAC entry in the fdb is used as default destination. With
multiple default destinations it is possible to use vxlan in
environments that disable multicast on the infrastructure level, e.g.
public clouds.

Signed-off-by: Mike Rapoport <mike.rapoport@...ellosystems.com>
---
 drivers/net/vxlan.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index c182520..3e75f97 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -458,7 +458,8 @@ static int vxlan_fdb_create(struct vxlan_dev *vxlan,
 			notify = 1;
 		}
 		if ((flags & NLM_F_APPEND) &&
-		    is_multicast_ether_addr(f->eth_addr)) {
+		    (is_multicast_ether_addr(f->eth_addr) ||
+		     is_zero_ether_addr(f->eth_addr))) {
 			int rc = vxlan_fdb_append(f, ip, port, vni, ifindex);
 
 			if (rc < 0)
-- 
1.8.1.5

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