datapath: Check for backported dev_get_by_index_rcu().

[sliver-openvswitch.git] / datapath / linux-2.6 / compat-2.6 / include / linux / netdevice.h

diff --git a/datapath/linux-2.6/compat-2.6/include/linux/netdevice.h b/datapath/linux-2.6/compat-2.6/include/linux/netdevice.h
index 379c1a9..04ebd89 100644 (file)
--- a/datapath/linux-2.6/compat-2.6/include/linux/netdevice.h
+++ b/datapath/linux-2.6/compat-2.6/include/linux/netdevice.h
@@ -77,12 +77,17 @@ extern void unregister_netdevice_many(struct list_head *head);
 extern void dev_disable_lro(struct net_device *dev);
 #endif
 
-#ifndef HAVE_DEV_GET_STATS
-static inline const struct net_device_stats *
-dev_get_stats(struct net_device *dev)
-{
-       return dev->get_stats(dev);
-}
+/* Linux 2.6.28 introduced dev_get_stats():
+ * const struct net_device_stats *dev_get_stats(struct net_device *dev);
+ *
+ * Linux 2.6.36 changed dev_get_stats() to:
+ * struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
+ *                                         struct rtnl_link_stats64 *storage);
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
+#define dev_get_stats(dev, storage) rpl_dev_get_stats(dev, storage)
+struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
+                                       struct rtnl_link_stats64 *storage);
 #endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
@@ -94,9 +99,46 @@ static inline int netdev_rx_handler_register(struct net_device *dev,
                                             void *rx_handler,
                                             void *rx_handler_data)
 {
+       if (dev->br_port)
+               return -EBUSY;
+       rcu_assign_pointer(dev->br_port, rx_handler_data);
        return 0;
 }
-static inline void netdev_rx_handler_unregister(struct net_device *dev) { }
+static inline void netdev_rx_handler_unregister(struct net_device *dev)
+{
+       rcu_assign_pointer(dev->br_port, NULL);
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+#undef SET_ETHTOOL_OPS
+#define SET_ETHTOOL_OPS(netdev, ops) \
+       ( (netdev)->ethtool_ops = (struct ethtool_ops *)(ops) )
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
+#define dev_get_by_name(net, name) dev_get_by_name(name)
+#define dev_get_by_index(net, ifindex) dev_get_by_index(ifindex)
+#define __dev_get_by_name(net, name) __dev_get_by_name(name)
+#define __dev_get_by_index(net, ifindex) __dev_get_by_index(ifindex)
+#define dev_get_by_index_rcu(net, ifindex) dev_get_by_index_rcu(ifindex)
+#endif
+
+#ifndef HAVE_DEV_GET_BY_INDEX_RCU
+static inline struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
+{
+       struct net_device *dev;
+
+       read_lock(&dev_base_lock);
+       dev = __dev_get_by_index(net, ifindex);
+       read_unlock(&dev_base_lock);
+
+       return dev;
+}
+#endif
+
+#ifndef NETIF_F_FSO
+#define NETIF_F_FSO 0
 #endif
 
 #endif