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 !defined HAVE_NETDEV_RX_HANDLER_REGISTER || \
  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 #define netdev_rx_handler_register rpl_netdev_rx_handler_register
  54 int rpl_netdev_rx_handler_register(struct net_device *dev,
  55                                    openvswitch_handle_frame_hook_t *hook,
  56                                    void *rx_handler_data);
  57 #else
  58
  59 #define netdev_rx_handler_register rpl_netdev_rx_handler_register
  60 int rpl_netdev_rx_handler_register(struct net_device *dev,
  61                                    struct sk_buff *(*netdev_hook)(struct net_bridge_port *p,
  62                                                            struct sk_buff *skb),
  63                                    void *rx_handler_data);
  64 #endif
  65
  66 #define netdev_rx_handler_unregister rpl_netdev_rx_handler_unregister
  67 void rpl_netdev_rx_handler_unregister(struct net_device *dev);
  68 #endif
  69
  70 #ifndef HAVE_DEV_GET_BY_INDEX_RCU
  71 static inline struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
  72 {
  73         struct net_device *dev;
  74
  75         read_lock(&dev_base_lock);
  76         dev = __dev_get_by_index(net, ifindex);
  77         read_unlock(&dev_base_lock);
  78
  79         return dev;
  80 }
  81 #endif
  82
  83 #ifndef NETIF_F_FSO
  84 #define NETIF_F_FSO 0
  85 #endif
  86
  87 #ifndef HAVE_NETDEV_FEATURES_T
  88 typedef u32 netdev_features_t;
  89 #endif
  90
  91 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
  92 #define OVS_USE_COMPAT_GSO_SEGMENTATION
  93 #endif
  94
  95 #ifdef OVS_USE_COMPAT_GSO_SEGMENTATION
  96 /* define compat version to handle MPLS segmentation offload. */
  97 #define __skb_gso_segment rpl__skb_gso_segment
  98 struct sk_buff *rpl__skb_gso_segment(struct sk_buff *skb,
  99                                     netdev_features_t features,
 100                                     bool tx_path);
 101
 102 #define skb_gso_segment rpl_skb_gso_segment
 103 static inline
 104 struct sk_buff *rpl_skb_gso_segment(struct sk_buff *skb, netdev_features_t features)
 105 {
 106         return rpl__skb_gso_segment(skb, features, true);
 107 }
 108 #endif
 109
 110 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
 111 #define netif_skb_features rpl_netif_skb_features
 112 netdev_features_t rpl_netif_skb_features(struct sk_buff *skb);
 113 #endif
 114
 115 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
 116 static inline int rpl_netif_needs_gso(struct net_device *dev,
 117                                       struct sk_buff *skb, int features)
 118 {
 119 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
 120         return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
 121                 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
 122 #else
 123         return netif_needs_gso(skb, features);
 124 #endif
 125 }
 126 #define netif_needs_gso rpl_netif_needs_gso
 127 #endif
 128
 129 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
 130
 131 /* XEN dom0 networking assumes dev->master is bond device
 132  * and it tries to access bond private structure from dev->master
 133  * ptr on receive path. This causes panic. Therefore it is better
 134  * not to backport this API.
 135  **/
 136 static inline int netdev_master_upper_dev_link(struct net_device *dev,
 137                                                struct net_device *upper_dev)
 138 {
 139         return 0;
 140 }
 141
 142 static inline void netdev_upper_dev_unlink(struct net_device *dev,
 143                                            struct net_device *upper_dev)
 144 {
 145 }
 146
 147 static inline struct net_device *netdev_master_upper_dev_get(struct net_device *dev)
 148 {
 149         return NULL;
 150 }
 151 #endif
 152
 153 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
 154 #define dev_queue_xmit rpl_dev_queue_xmit
 155 int rpl_dev_queue_xmit(struct sk_buff *skb);
 156 #endif
 157
 158 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
 159 static inline struct net_device *netdev_notifier_info_to_dev(void *info)
 160 {
 161         return info;
 162 }
 163 #endif
 164
 165 #ifndef HAVE_PCPU_SW_NETSTATS
 166
 167 #include <linux/u64_stats_sync.h>
 168
 169 struct pcpu_sw_netstats {
 170         u64     rx_packets;
 171         u64     rx_bytes;
 172         u64     tx_packets;
 173         u64     tx_bytes;
 174         struct u64_stats_sync   syncp;
 175 };
 176 #endif
 177
 178 #ifndef netdev_alloc_pcpu_stats
 179 #define netdev_alloc_pcpu_stats(type)                           \
 180 ({                                                              \
 181         typeof(type) __percpu *pcpu_stats = alloc_percpu(type); \
 182         if (pcpu_stats) {                                       \
 183                 int ____i;                                      \
 184                 for_each_possible_cpu(____i) {                  \
 185                         typeof(type) *stat;                     \
 186                         stat = per_cpu_ptr(pcpu_stats, ____i);  \
 187                         u64_stats_init(&stat->syncp);           \
 188                 }                                               \
 189         }                                                       \
 190         pcpu_stats;                                             \
 191 })
 192 #endif
 193
 194 #endif