vxlan: fix initialization with custom link parameters

Commit 0c867c9bf84c ("vxlan: move Ethernet initialization to a separate
function") changed initialization order and as an unintended result, when the
user specifies additional link parameters (such as IFLA_ADDRESS) while
creating vxlan interface, those are overwritten by vxlan_ether_setup later.

It's necessary to call ether_setup from withing the ->setup callback. That
way, the correct parameters are set by rtnl_create_link later. This is done
also for VXLAN-GPE, as we don't know the interface type yet at that point,
and changed to the correct interface type later.

Fixes: 0c867c9bf84c ("vxlan: move Ethernet initialization to a separate function")
Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 6fb93b5..2668e52 100644 (file)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2557,6 +2557,9 @@ static void vxlan_setup(struct net_device *dev)
        struct vxlan_dev *vxlan = netdev_priv(dev);
        unsigned int h;
 
+       eth_hw_addr_random(dev);
+       ether_setup(dev);
+
        dev->destructor = free_netdev;
        SET_NETDEV_DEVTYPE(dev, &vxlan_type);
 
@@ -2592,8 +2595,6 @@ static void vxlan_setup(struct net_device *dev)
 
 static void vxlan_ether_setup(struct net_device *dev)
 {
-       eth_hw_addr_random(dev);
-       ether_setup(dev);
        dev->priv_flags &= ~IFF_TX_SKB_SHARING;
        dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
        dev->netdev_ops = &vxlan_netdev_ether_ops;
@@ -2601,11 +2602,10 @@ static void vxlan_ether_setup(struct net_device *dev)
 
 static void vxlan_raw_setup(struct net_device *dev)
 {
+       dev->header_ops = NULL;
        dev->type = ARPHRD_NONE;
        dev->hard_header_len = 0;
        dev->addr_len = 0;
-       dev->mtu = ETH_DATA_LEN;
-       dev->tx_queue_len = 1000;
        dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
        dev->netdev_ops = &vxlan_netdev_raw_ops;
 }