datapath/linux/compat/include/linux/netdevice.h

   1 #ifndef __LINUX_NETDEVICE_WRAPPER_H
   2 #define __LINUX_NETDEVICE_WRAPPER_H 1
   3
   4 #include_next <linux/netdevice.h>
   5
   6 struct net;
   7
   8 #include <linux/version.h>
   9
  10 #ifndef to_net_dev
  11 #define to_net_dev(class) container_of(class, struct net_device, NETDEV_DEV_MEMBER)
  12 #endif
  13
  14 #ifdef HAVE_RHEL_OVS_HOOK
  15 extern struct sk_buff *(*openvswitch_handle_frame_hook)(struct sk_buff *skb);
  16 extern int nr_bridges;
  17 #endif
  18
  19 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
  20 extern void unregister_netdevice_queue(struct net_device *dev,
  21                                         struct list_head *head);
  22 extern void unregister_netdevice_many(struct list_head *head);
  23 #endif
  24
  25 #ifndef HAVE_DEV_DISABLE_LRO
  26 extern void dev_disable_lro(struct net_device *dev);
  27 #endif
  28
  29 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) || \
  30     defined HAVE_RHEL_OVS_HOOK
  31 static inline int netdev_rx_handler_register(struct net_device *dev,
  32                                              void *rx_handler,
  33                                              void *rx_handler_data)
  34 {
  35 #ifdef HAVE_RHEL_OVS_HOOK
  36         rcu_assign_pointer(dev->ax25_ptr, rx_handler_data);
  37         nr_bridges++;
  38         rcu_assign_pointer(openvswitch_handle_frame_hook, rx_handler);
  39 #else
  40         if (dev->br_port)
  41                 return -EBUSY;
  42         rcu_assign_pointer(dev->br_port, rx_handler_data);
  43 #endif
  44         return 0;
  45 }
  46 static inline void netdev_rx_handler_unregister(struct net_device *dev)
  47 {
  48 #ifdef HAVE_RHEL_OVS_HOOK
  49         rcu_assign_pointer(dev->ax25_ptr, NULL);
  50
  51         if (--nr_bridges <= 0)
  52                 rcu_assign_pointer(openvswitch_handle_frame_hook, NULL);
  53 #else
  54         rcu_assign_pointer(dev->br_port, NULL);
  55 #endif
  56 }
  57 #endif
  58
  59 #ifndef HAVE_DEV_GET_BY_INDEX_RCU
  60 static inline struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
  61 {
  62         struct net_device *dev;
  63
  64         read_lock(&dev_base_lock);
  65         dev = __dev_get_by_index(net, ifindex);
  66         read_unlock(&dev_base_lock);
  67
  68         return dev;
  69 }
  70 #endif
  71
  72 #ifndef NETIF_F_FSO
  73 #define NETIF_F_FSO 0
  74 #endif
  75
  76 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
  77 #define skb_gso_segment rpl_skb_gso_segment
  78 struct sk_buff *rpl_skb_gso_segment(struct sk_buff *skb, u32 features);
  79
  80 #define netif_skb_features rpl_netif_skb_features
  81 u32 rpl_netif_skb_features(struct sk_buff *skb);
  82
  83 #define netif_needs_gso rpl_netif_needs_gso
  84 static inline int rpl_netif_needs_gso(struct sk_buff *skb, int features)
  85 {
  86         return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
  87                 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
  88 }
  89 #endif
  90
  91 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)
  92 typedef u32 netdev_features_t;
  93 #endif
  94
  95 #ifndef HAVE___SKB_GSO_SEGMENT
  96 static inline struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
  97                                                 netdev_features_t features,
  98                                                 bool tx_path)
  99 {
 100         return skb_gso_segment(skb, features);
 101 }
 102 #endif
 103
 104 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
 105
 106 /* XEN dom0 networking assumes dev->master is bond device
 107  * and it tries to access bond private structure from dev->master
 108  * ptr on receive path. This causes panic. Therefore it is better
 109  * not to backport this API.
 110  **/
 111 static inline int netdev_master_upper_dev_link(struct net_device *dev,
 112                                                struct net_device *upper_dev)
 113 {
 114         return 0;
 115 }
 116
 117 static inline void netdev_upper_dev_unlink(struct net_device *dev,
 118                                            struct net_device *upper_dev)
 119 {
 120 }
 121
 122 static inline struct net_device *netdev_master_upper_dev_get(struct net_device *dev)
 123 {
 124         return NULL;
 125 }
 126 #endif
 127
 128 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
 129 #define dev_queue_xmit rpl_dev_queue_xmit
 130 int dev_queue_xmit(struct sk_buff *skb);
 131 #endif
 132
 133 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
 134 static inline struct net_device *netdev_notifier_info_to_dev(void *info)
 135 {
 136         return info;
 137 }
 138 #endif
 139
 140 #endif