From afe12cc86b0ba545a01ad8716539ab07ab6e9e89 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= <mirq-linux@rere.qmqm.pl>
Date: Sat, 7 May 2011 03:22:17 +0000
Subject: [PATCH] net: introduce netdev_change_features()
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It will be needed by bonding and other drivers changing vlan_features
after ndo_init callback.
As a bonus, this includes kernel-doc for netdev_update_features().
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/linux/netdevice.h | 1 +
net/core/dev.c | 25 +++++++++++++++++++++++++
2 files changed, 26 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 00d650c74800..1d9696a9ee4d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2565,6 +2565,7 @@ u32 netdev_increment_features(u32 all, u32 one, u32 mask);
u32 netdev_fix_features(struct net_device *dev, u32 features);
int __netdev_update_features(struct net_device *dev);
void netdev_update_features(struct net_device *dev);
+void netdev_change_features(struct net_device *dev);
void netif_stacked_transfer_operstate(const struct net_device *rootdev,
struct net_device *dev);
diff --git a/net/core/dev.c b/net/core/dev.c
index 75898a32c038..ea23353e6251 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5289,6 +5289,14 @@ int __netdev_update_features(struct net_device *dev)
return 1;
}
+/**
+ * netdev_update_features - recalculate device features
+ * @dev: the device to check
+ *
+ * Recalculate dev->features set and send notifications if it
+ * has changed. Should be called after driver or hardware dependent
+ * conditions might have changed that influence the features.
+ */
void netdev_update_features(struct net_device *dev)
{
if (__netdev_update_features(dev))
@@ -5296,6 +5304,23 @@ void netdev_update_features(struct net_device *dev)
}
EXPORT_SYMBOL(netdev_update_features);
+/**
+ * netdev_change_features - recalculate device features
+ * @dev: the device to check
+ *
+ * Recalculate dev->features set and send notifications even
+ * if they have not changed. Should be called instead of
+ * netdev_update_features() if also dev->vlan_features might
+ * have changed to allow the changes to be propagated to stacked
+ * VLAN devices.
+ */
+void netdev_change_features(struct net_device *dev)
+{
+ __netdev_update_features(dev);
+ netdev_features_change(dev);
+}
+EXPORT_SYMBOL(netdev_change_features);
+
/**
* netif_stacked_transfer_operstate - transfer operstate
* @rootdev: the root or lower level device to transfer state from
--
GitLab