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 #include <linux/if_bridge.h>
   6
   7 struct net;
   8
   9 #include <linux/version.h>
  10
  11 #ifndef IFF_TX_SKB_SHARING
  12 #define IFF_TX_SKB_SHARING 0
  13 #endif
  14
  15 #ifndef IFF_OVS_DATAPATH
  16 #define IFF_OVS_DATAPATH 0
  17 #else
  18 #define HAVE_OVS_DATAPATH
  19 #endif
  20
  21 #ifndef IFF_LIVE_ADDR_CHANGE
  22 #define IFF_LIVE_ADDR_CHANGE 0
  23 #endif
  24
  25 #ifndef to_net_dev
  26 #define to_net_dev(class) container_of(class, struct net_device, NETDEV_DEV_MEMBER)
  27 #endif
  28
  29 #ifndef HAVE_NET_NAME_UNKNOWN
  30 #undef alloc_netdev
  31 #define NET_NAME_UNKNOWN 0
  32 #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \
  33         alloc_netdev_mq(sizeof_priv, name, setup, 1)
  34 #endif
  35
  36 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
  37 extern void unregister_netdevice_queue(struct net_device *dev,
  38                                         struct list_head *head);
  39 extern void unregister_netdevice_many(struct list_head *head);
  40 #endif
  41
  42 #ifndef HAVE_DEV_DISABLE_LRO
  43 extern void dev_disable_lro(struct net_device *dev);
  44 #endif
  45
  46 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) || \
  47     defined HAVE_RHEL_OVS_HOOK
  48
  49 #ifdef HAVE_RHEL_OVS_HOOK
  50 typedef struct sk_buff *(openvswitch_handle_frame_hook_t)(struct sk_buff *skb);
  51 extern openvswitch_handle_frame_hook_t *openvswitch_handle_frame_hook;
  52
  53 int netdev_rx_handler_register(struct net_device *dev,
  54                                openvswitch_handle_frame_hook_t *hook,
  55                                void *rx_handler_data);
  56 #else
  57
  58 int netdev_rx_handler_register(struct net_device *dev,
  59                                struct sk_buff *(*netdev_hook)(struct net_bridge_port *p,
  60                                                              struct sk_buff *skb),
  61                                void *rx_handler_data);
  62 #endif
  63
  64 void netdev_rx_handler_unregister(struct net_device *dev);
  65 #endif
  66
  67 #ifndef HAVE_DEV_GET_BY_INDEX_RCU
  68 static inline struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
  69 {
  70         struct net_device *dev;
  71
  72         read_lock(&dev_base_lock);
  73         dev = __dev_get_by_index(net, ifindex);
  74         read_unlock(&dev_base_lock);
  75
  76         return dev;
  77 }
  78 #endif
  79
  80 #ifndef NETIF_F_FSO
  81 #define NETIF_F_FSO 0
  82 #endif
  83
  84 #ifndef HAVE_NETDEV_FEATURES_T
  85 typedef u32 netdev_features_t;
  86 #endif
  87
  88 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
  89 #define skb_gso_segment rpl_skb_gso_segment
  90 struct sk_buff *rpl_skb_gso_segment(struct sk_buff *skb,
  91                                     netdev_features_t features);
  92 #endif
  93
  94 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
  95 #define netif_skb_features rpl_netif_skb_features
  96 netdev_features_t rpl_netif_skb_features(struct sk_buff *skb);
  97
  98 #define netif_needs_gso rpl_netif_needs_gso
  99 static inline int rpl_netif_needs_gso(struct sk_buff *skb, int features)
 100 {
 101         return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
 102                 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
 103 }
 104 #endif
 105
 106 #ifndef HAVE___SKB_GSO_SEGMENT
 107 static inline struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 108                                                 netdev_features_t features,
 109                                                 bool tx_path)
 110 {
 111         return skb_gso_segment(skb, features);
 112 }
 113 #endif
 114
 115 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
 116
 117 /* XEN dom0 networking assumes dev->master is bond device
 118  * and it tries to access bond private structure from dev->master
 119  * ptr on receive path. This causes panic. Therefore it is better
 120  * not to backport this API.
 121  **/
 122 static inline int netdev_master_upper_dev_link(struct net_device *dev,
 123                                                struct net_device *upper_dev)
 124 {
 125         return 0;
 126 }
 127
 128 static inline void netdev_upper_dev_unlink(struct net_device *dev,
 129                                            struct net_device *upper_dev)
 130 {
 131 }
 132
 133 static inline struct net_device *netdev_master_upper_dev_get(struct net_device *dev)
 134 {
 135         return NULL;
 136 }
 137 #endif
 138
 139 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
 140 #define dev_queue_xmit rpl_dev_queue_xmit
 141 int dev_queue_xmit(struct sk_buff *skb);
 142 #endif
 143
 144 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
 145 static inline struct net_device *netdev_notifier_info_to_dev(void *info)
 146 {
 147         return info;
 148 }
 149 #endif
 150
 151 #ifndef HAVE_PCPU_SW_NETSTATS
 152
 153 #include <linux/u64_stats_sync.h>
 154
 155 struct pcpu_sw_netstats {
 156         u64     rx_packets;
 157         u64     rx_bytes;
 158         u64     tx_packets;
 159         u64     tx_bytes;
 160         struct u64_stats_sync   syncp;
 161 };
 162 #endif
 163
 164 #ifndef netdev_alloc_pcpu_stats
 165 #define netdev_alloc_pcpu_stats(type)                           \
 166 ({                                                              \
 167         typeof(type) __percpu *pcpu_stats = alloc_percpu(type); \
 168         if (pcpu_stats) {                                       \
 169                 int ____i;                                      \
 170                 for_each_possible_cpu(____i) {                  \
 171                         typeof(type) *stat;                     \
 172                         stat = per_cpu_ptr(pcpu_stats, ____i);  \
 173                         u64_stats_init(&stat->syncp);           \
 174                 }                                               \
 175         }                                                       \
 176         pcpu_stats;                                             \
 177 })
 178 #endif
 179
 180 #endif