mctp: Pass flow data & flow release events to drivers
Now that we have an extension for MCTP data in skbs, populate the flow
when a key has been created for the packet, and add a device driver
operation to inform of flow destruction.
Includes a fix for a warning with test builds:
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mctp/device.c b/net/mctp/device.c
index 3827d62..8799ee7 100644
--- a/net/mctp/device.c
+++ b/net/mctp/device.c
@@ -260,6 +260,24 @@ void mctp_dev_put(struct mctp_dev *mdev)
}
}
+void mctp_dev_release_key(struct mctp_dev *dev, struct mctp_sk_key *key)
+ __must_hold(&key->lock)
+{
+ if (!dev)
+ return;
+ if (dev->ops && dev->ops->release_flow)
+ dev->ops->release_flow(dev, key);
+ key->dev = NULL;
+ mctp_dev_put(dev);
+}
+
+void mctp_dev_set_key(struct mctp_dev *dev, struct mctp_sk_key *key)
+ __must_hold(&key->lock)
+{
+ mctp_dev_hold(dev);
+ key->dev = dev;
+}
+
static struct mctp_dev *mctp_add_dev(struct net_device *dev)
{
struct mctp_dev *mdev;
@@ -414,6 +432,39 @@ static int mctp_dev_notify(struct notifier_block *this, unsigned long event,
return NOTIFY_OK;
}
+static int mctp_register_netdevice(struct net_device *dev,
+ const struct mctp_netdev_ops *ops)
+{
+ struct mctp_dev *mdev;
+
+ mdev = mctp_add_dev(dev);
+ if (IS_ERR(mdev))
+ return PTR_ERR(mdev);
+
+ mdev->ops = ops;
+
+ return register_netdevice(dev);
+}
+
+int mctp_register_netdev(struct net_device *dev,
+ const struct mctp_netdev_ops *ops)
+{
+ int rc;
+
+ rtnl_lock();
+ rc = mctp_register_netdevice(dev, ops);
+ rtnl_unlock();
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(mctp_register_netdev);
+
+void mctp_unregister_netdev(struct net_device *dev)
+{
+ unregister_netdev(dev);
+}
+EXPORT_SYMBOL_GPL(mctp_unregister_netdev);
+
static struct rtnl_af_ops mctp_af_ops = {
.family = AF_MCTP,
.fill_link_af = mctp_fill_link_af,