diff options
| author | Sridhar Samudrala <sri@us.ibm.com> | 2013-09-17 12:12:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-13 18:14:25 -0700 |
| commit | 936cac0cc8457c4d79b14244ceb050a7487edabe (patch) | |
| tree | 20daabc2f0b13fe07f057c4e53c75a68fd5621e4 | |
| parent | 6a5bb65640a56fbb23e578e2891eb3639458cabb (diff) | |
vxlan: Avoid creating fdb entry with NULL destination
[ Upstream commit 2936b6ab455433a5ad14c7a1d2473afe1fa3faa7 ]
Commit afbd8bae9c798c5cdbe4439d3a50536b5438247c
vxlan: add implicit fdb entry for default destination
creates an implicit fdb entry for default destination. This results
in an invalid fdb entry if default destination is not specified.
For ex:
ip link add vxlan1 type vxlan id 100
creates the following fdb entry
00:00:00:00:00:00 dev vxlan1 dst 0.0.0.0 self permanent
This patch fixes this issue by creating an fdb entry only if a
valid default destination is specified.
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/vxlan.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 767f7af3bd40..8a05d777616b 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1767,15 +1767,17 @@ static int vxlan_newlink(struct net *net, struct net_device *dev, SET_ETHTOOL_OPS(dev, &vxlan_ethtool_ops); - /* create an fdb entry for default destination */ - err = vxlan_fdb_create(vxlan, all_zeros_mac, - vxlan->default_dst.remote_ip, - NUD_REACHABLE|NUD_PERMANENT, - NLM_F_EXCL|NLM_F_CREATE, - vxlan->dst_port, vxlan->default_dst.remote_vni, - vxlan->default_dst.remote_ifindex, NTF_SELF); - if (err) - return err; + /* create an fdb entry for a valid default destination */ + if (vxlan->default_dst.remote_ip != htonl(INADDR_ANY)) { + err = vxlan_fdb_create(vxlan, all_zeros_mac, + vxlan->default_dst.remote_ip, + NUD_REACHABLE|NUD_PERMANENT, + NLM_F_EXCL|NLM_F_CREATE, + vxlan->dst_port, vxlan->default_dst.remote_vni, + vxlan->default_dst.remote_ifindex, NTF_SELF); + if (err) + return err; + } err = register_netdevice(dev); if (err) { |