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vxlan: fix ovs support 

The required changes in the function vxlan_dev_create() were missing
in commit 8bcdc4f3a2.
The vxlan device is not registered anymore after this patch and the error
path causes an stack dump:
 WARNING: CPU: 3 PID: 1498 at net/core/dev.c:6713 rollback_registered_many+0x9d/0x3f0

Fixes: 8bcdc4f3a2 ("vxlan: add changelink support")
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2017-03-13 16:24:03 +01:00 committed by David S. Miller
parent 91864f5852
commit c80498e36d
1 changed files with 40 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
drivers/net/vxlan.c
View File

@ -2976,6 +2976,44 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
return 0;
}
static int __vxlan_dev_create(struct net *net, struct net_device *dev,
struct vxlan_config *conf)
{
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
struct vxlan_dev *vxlan = netdev_priv(dev);
int err;
err = vxlan_dev_configure(net, dev, conf, false);
if (err)
return err;
dev->ethtool_ops = &vxlan_ethtool_ops;
/* 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->cfg.dst_port,
vxlan->default_dst.remote_vni,
vxlan->default_dst.remote_vni,
vxlan->default_dst.remote_ifindex,
NTF_SELF);
if (err)
return err;
}
err = register_netdevice(dev);
if (err) {
vxlan_fdb_delete_default(vxlan, vxlan->default_dst.remote_vni);
return err;
}
list_add(&vxlan->next, &vn->vxlan_list);
return 0;
}
static int vxlan_nl2conf(struct nlattr *tb[], struct nlattr *data[],
struct net_device *dev, struct vxlan_config *conf,
bool changelink)
@ -3172,8 +3210,6 @@ static int vxlan_nl2conf(struct nlattr *tb[], struct nlattr *data[],
static int vxlan_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
struct vxlan_net *vn = net_generic(src_net, vxlan_net_id);
struct vxlan_dev *vxlan = netdev_priv(dev);
struct vxlan_config conf;
int err;
@ -3181,36 +3217,7 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
if (err)
return err;
err = vxlan_dev_configure(src_net, dev, &conf, false);
if (err)
return err;
dev->ethtool_ops = &vxlan_ethtool_ops;
/* 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->cfg.dst_port,
vxlan->default_dst.remote_vni,
vxlan->default_dst.remote_vni,
vxlan->default_dst.remote_ifindex,
NTF_SELF);
if (err)
return err;
}
err = register_netdevice(dev);
if (err) {
vxlan_fdb_delete_default(vxlan, vxlan->default_dst.remote_vni);
return err;
}
list_add(&vxlan->next, &vn->vxlan_list);
return 0;
return __vxlan_dev_create(src_net, dev, &conf);
}
static int vxlan_changelink(struct net_device *dev, struct nlattr *tb[],
@ -3440,7 +3447,7 @@ struct net_device *vxlan_dev_create(struct net *net, const char *name,
if (IS_ERR(dev))
return dev;
err = vxlan_dev_configure(net, dev, conf, false);
err = __vxlan_dev_create(net, dev, conf);
if (err < 0) {
free_netdev(dev);
return ERR_PTR(err);