include/linux/if_macvlan.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_IF_MACVLAN_H
   3 #define _LINUX_IF_MACVLAN_H
   4
   5 #include <linux/if_link.h>
   6 #include <linux/if_vlan.h>
   7 #include <linux/list.h>
   8 #include <linux/netdevice.h>
   9 #include <linux/netlink.h>
  10 #include <net/netlink.h>
  11 #include <linux/u64_stats_sync.h>
  12
  13 struct macvlan_port;
  14
  15 #define MACVLAN_MC_FILTER_BITS  8
  16 #define MACVLAN_MC_FILTER_SZ    (1 << MACVLAN_MC_FILTER_BITS)
  17
  18 struct macvlan_dev {
  19         struct net_device       *dev;
  20         struct list_head        list;
  21         struct hlist_node       hlist;
  22         struct macvlan_port     *port;
  23         struct net_device       *lowerdev;
  24         void                    *fwd_priv;
  25         struct vlan_pcpu_stats __percpu *pcpu_stats;
  26
  27         DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
  28
  29         netdev_features_t       set_features;
  30         enum macvlan_mode       mode;
  31         u16                     flags;
  32         int                     nest_level;
  33 #ifdef CONFIG_NET_POLL_CONTROLLER
  34         struct netpoll          *netpoll;
  35 #endif
  36         unsigned int            macaddr_count;
  37 };
  38
  39 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
  40                                     unsigned int len, bool success,
  41                                     bool multicast)
  42 {
  43         if (likely(success)) {
  44                 struct vlan_pcpu_stats *pcpu_stats;
  45
  46                 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
  47                 u64_stats_update_begin(&pcpu_stats->syncp);
  48                 pcpu_stats->rx_packets++;
  49                 pcpu_stats->rx_bytes += len;
  50                 if (multicast)
  51                         pcpu_stats->rx_multicast++;
  52                 u64_stats_update_end(&pcpu_stats->syncp);
  53         } else {
  54                 this_cpu_inc(vlan->pcpu_stats->rx_errors);
  55         }
  56 }
  57
  58 extern void macvlan_common_setup(struct net_device *dev);
  59
  60 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
  61                                   struct nlattr *tb[], struct nlattr *data[],
  62                                   struct netlink_ext_ack *extack);
  63
  64 extern void macvlan_count_rx(const struct macvlan_dev *vlan,
  65                              unsigned int len, bool success,
  66                              bool multicast);
  67
  68 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
  69
  70 extern int macvlan_link_register(struct rtnl_link_ops *ops);
  71
  72 #if IS_ENABLED(CONFIG_MACVLAN)
  73 static inline struct net_device *
  74 macvlan_dev_real_dev(const struct net_device *dev)
  75 {
  76         struct macvlan_dev *macvlan = netdev_priv(dev);
  77
  78         return macvlan->lowerdev;
  79 }
  80 #else
  81 static inline struct net_device *
  82 macvlan_dev_real_dev(const struct net_device *dev)
  83 {
  84         BUG();
  85         return NULL;
  86 }
  87 #endif
  88
  89 #endif /* _LINUX_IF_MACVLAN_H */