datapath: define compat __skb_gso_segment()

[cascardo/ovs.git] / datapath / linux / compat / include / linux / netdevice.h

diff --git a/datapath/linux/compat/include/linux/netdevice.h b/datapath/linux/compat/include/linux/netdevice.h
index d726390..3deb93d 100644 (file)
--- a/datapath/linux/compat/include/linux/netdevice.h
+++ b/datapath/linux/compat/include/linux/netdevice.h
@@ -8,10 +8,31 @@ struct net;
 
 #include <linux/version.h>
 
+#ifndef IFF_TX_SKB_SHARING
+#define IFF_TX_SKB_SHARING 0
+#endif
+
+#ifndef IFF_OVS_DATAPATH
+#define IFF_OVS_DATAPATH 0
+#else
+#define HAVE_OVS_DATAPATH
+#endif
+
+#ifndef IFF_LIVE_ADDR_CHANGE
+#define IFF_LIVE_ADDR_CHANGE 0
+#endif
+
 #ifndef to_net_dev
 #define to_net_dev(class) container_of(class, struct net_device, NETDEV_DEV_MEMBER)
 #endif
 
+#ifndef HAVE_NET_NAME_UNKNOWN
+#undef alloc_netdev
+#define NET_NAME_UNKNOWN 0
+#define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \
+        alloc_netdev_mq(sizeof_priv, name, setup, 1)
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
 extern void unregister_netdevice_queue(struct net_device *dev,
                                        struct list_head *head);
@@ -29,18 +50,21 @@ extern void dev_disable_lro(struct net_device *dev);
 typedef struct sk_buff *(openvswitch_handle_frame_hook_t)(struct sk_buff *skb);
 extern openvswitch_handle_frame_hook_t *openvswitch_handle_frame_hook;
 
-int netdev_rx_handler_register(struct net_device *dev,
-                              openvswitch_handle_frame_hook_t *hook,
-                              void *rx_handler_data);
+#define netdev_rx_handler_register rpl_netdev_rx_handler_register
+int rpl_netdev_rx_handler_register(struct net_device *dev,
+                                  openvswitch_handle_frame_hook_t *hook,
+                                  void *rx_handler_data);
 #else
 
-int netdev_rx_handler_register(struct net_device *dev,
-                              struct sk_buff *(*netdev_hook)(struct net_bridge_port *p,
-                                                            struct sk_buff *skb),
-                              void *rx_handler_data);
+#define netdev_rx_handler_register rpl_netdev_rx_handler_register
+int rpl_netdev_rx_handler_register(struct net_device *dev,
+                                  struct sk_buff *(*netdev_hook)(struct net_bridge_port *p,
+                                                          struct sk_buff *skb),
+                                  void *rx_handler_data);
 #endif
 
-void netdev_rx_handler_unregister(struct net_device *dev);
+#define netdev_rx_handler_unregister rpl_netdev_rx_handler_unregister
+void rpl_netdev_rx_handler_unregister(struct net_device *dev);
 #endif
 
 #ifndef HAVE_DEV_GET_BY_INDEX_RCU
@@ -64,29 +88,42 @@ static inline struct net_device *dev_get_by_index_rcu(struct net *net, int ifind
 typedef u32 netdev_features_t;
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
+#define OVS_USE_COMPAT_GSO_SEGMENTATION
+#endif
+
+#ifdef OVS_USE_COMPAT_GSO_SEGMENTATION
+/* define compat version to handle MPLS segmentation offload. */
+#define __skb_gso_segment rpl__skb_gso_segment
+struct sk_buff *rpl__skb_gso_segment(struct sk_buff *skb,
+                                   netdev_features_t features,
+                                   bool tx_path);
+
 #define skb_gso_segment rpl_skb_gso_segment
-struct sk_buff *rpl_skb_gso_segment(struct sk_buff *skb,
-                                    netdev_features_t features);
+static inline
+struct sk_buff *rpl_skb_gso_segment(struct sk_buff *skb, netdev_features_t features)
+{
+        return rpl__skb_gso_segment(skb, features, true);
+}
+#endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
 #define netif_skb_features rpl_netif_skb_features
 netdev_features_t rpl_netif_skb_features(struct sk_buff *skb);
+#endif
 
-#define netif_needs_gso rpl_netif_needs_gso
-static inline int rpl_netif_needs_gso(struct sk_buff *skb, int features)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
+static inline int rpl_netif_needs_gso(struct net_device *dev,
+                                     struct sk_buff *skb, int features)
 {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
        return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
                unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
-}
+#else
+       return netif_needs_gso(skb, features);
 #endif
-
-#ifndef HAVE___SKB_GSO_SEGMENT
-static inline struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
-                                               netdev_features_t features,
-                                               bool tx_path)
-{
-       return skb_gso_segment(skb, features);
 }
+#define netif_needs_gso rpl_netif_needs_gso
 #endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
@@ -113,9 +150,9 @@ static inline struct net_device *netdev_master_upper_dev_get(struct net_device *
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
 #define dev_queue_xmit rpl_dev_queue_xmit
-int dev_queue_xmit(struct sk_buff *skb);
+int rpl_dev_queue_xmit(struct sk_buff *skb);
 #endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
@@ -138,4 +175,20 @@ struct pcpu_sw_netstats {
 };
 #endif
 
+#ifndef netdev_alloc_pcpu_stats
+#define netdev_alloc_pcpu_stats(type)                          \
+({                                                             \
+       typeof(type) __percpu *pcpu_stats = alloc_percpu(type); \
+       if (pcpu_stats) {                                       \
+               int ____i;                                      \
+               for_each_possible_cpu(____i) {                  \
+                       typeof(type) *stat;                     \
+                       stat = per_cpu_ptr(pcpu_stats, ____i);  \
+                       u64_stats_init(&stat->syncp);           \
+               }                                               \
+       }                                                       \
+       pcpu_stats;                                             \
+})
+#endif
+
 #endif