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