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Date: Mon, 13 Mar 2017 16:24:03 +0100
From: Nicolas Dichtel <nicolas.dichtel@...nd.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, dev@...nvswitch.org,
Nicolas Dichtel <nicolas.dichtel@...nd.com>,
Roopa Prabhu <roopa@...ulusnetworks.com>
Subject: [PATCH net] vxlan: fix ovs support
The required changes in the function vxlan_dev_create() were missing
in commit 8bcdc4f3a20b.
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: 8bcdc4f3a20b ("vxlan: add changelink support")
CC: Roopa Prabhu <roopa@...ulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
drivers/net/vxlan.c | 73 +++++++++++++++++++++++++++++------------------------
1 file changed, 40 insertions(+), 33 deletions(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index e375560cc74e..bdb6ae16d4a8 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -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);
--
2.8.1
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