include/linux/if_macvlan.h

   1 #ifndef _LINUX_IF_MACVLAN_H
   2 #define _LINUX_IF_MACVLAN_H
   3
   4 #include <linux/if_link.h>
   5 #include <linux/list.h>
   6 #include <linux/netdevice.h>
   7 #include <linux/netlink.h>
   8 #include <net/netlink.h>
   9 #include <linux/u64_stats_sync.h>
  10
  11 #if defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE)
  12 struct socket *macvtap_get_socket(struct file *);
  13 #else
  14 #include <linux/err.h>
  15 #include <linux/errno.h>
  16 struct file;
  17 struct socket;
  18 static inline struct socket *macvtap_get_socket(struct file *f)
  19 {
  20         return ERR_PTR(-EINVAL);
  21 }
  22 #endif /* CONFIG_MACVTAP */
  23
  24 struct macvlan_port;
  25 struct macvtap_queue;
  26
  27 /**
  28  *      struct macvlan_rx_stats - MACVLAN percpu rx stats
  29  *      @rx_packets: number of received packets
  30  *      @rx_bytes: number of received bytes
  31  *      @rx_multicast: number of received multicast packets
  32  *      @syncp: synchronization point for 64bit counters
  33  *      @rx_errors: number of errors
  34  */
  35 struct macvlan_rx_stats {
  36         u64                     rx_packets;
  37         u64                     rx_bytes;
  38         u64                     rx_multicast;
  39         struct u64_stats_sync   syncp;
  40         unsigned long           rx_errors;
  41 };
  42
  43 struct macvlan_dev {
  44         struct net_device       *dev;
  45         struct list_head        list;
  46         struct hlist_node       hlist;
  47         struct macvlan_port     *port;
  48         struct net_device       *lowerdev;
  49         struct macvlan_rx_stats __percpu *rx_stats;
  50         enum macvlan_mode       mode;
  51         int (*receive)(struct sk_buff *skb);
  52         int (*forward)(struct net_device *dev, struct sk_buff *skb);
  53         struct macvtap_queue    *tap;
  54 };
  55
  56 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
  57                                     unsigned int len, bool success,
  58                                     bool multicast)
  59 {
  60         struct macvlan_rx_stats *rx_stats;
  61
  62         rx_stats = this_cpu_ptr(vlan->rx_stats);
  63         if (likely(success)) {
  64                 u64_stats_update_begin(&rx_stats->syncp);
  65                 rx_stats->rx_packets++;;
  66                 rx_stats->rx_bytes += len;
  67                 if (multicast)
  68                         rx_stats->rx_multicast++;
  69                 u64_stats_update_end(&rx_stats->syncp);
  70         } else {
  71                 rx_stats->rx_errors++;
  72         }
  73 }
  74
  75 extern void macvlan_common_setup(struct net_device *dev);
  76
  77 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
  78                                   struct nlattr *tb[], struct nlattr *data[],
  79                                   int (*receive)(struct sk_buff *skb),
  80                                   int (*forward)(struct net_device *dev,
  81                                                  struct sk_buff *skb));
  82
  83 extern void macvlan_count_rx(const struct macvlan_dev *vlan,
  84                              unsigned int len, bool success,
  85                              bool multicast);
  86
  87 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
  88
  89 extern int macvlan_link_register(struct rtnl_link_ops *ops);
  90
  91 extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
  92                                       struct net_device *dev);
  93
  94 #endif /* _LINUX_IF_MACVLAN_H */