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| author | Sridhar Samudrala <sri@us.ibm.com> | 2013-09-17 21:12:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-18 02:19:18 +0200 |
| commit | 2936b6ab455433a5ad14c7a1d2473afe1fa3faa7 (patch) | |
| tree | 836490da421f6242c89d12b05e038e417de8f0b2 /drivers/net/vxlan.c | |
| parent | tcp: fix RTO calculated from cached RTT (diff) | |
| download | linux-2936b6ab455433a5ad14c7a1d2473afe1fa3faa7.tar.xz linux-2936b6ab455433a5ad14c7a1d2473afe1fa3faa7.zip | |
vxlan: Avoid creating fdb entry with NULL destination
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>
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 2400b1beddd5..d1292fe746bc 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2490,15 +2490,19 @@ 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_addr_any(&vxlan->default_dst.remote_ip)) { + 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) { |