LXR linux/include/linux/if

   1#ifndef _LINUX_IF_MACVLAN_H
   2#define _LINUX_IF_MACVLAN_H
   3
   4#include <linux/if_link.h>
   5#include <linux/if_vlan.h>
   6#include <linux/list.h>
   7#include <linux/netdevice.h>
   8#include <linux/netlink.h>
   9#include <net/netlink.h>
  10#include <linux/u64_stats_sync.h>
  11
  12struct macvlan_port;
  13struct macvtap_queue;
  14
  15/*
  16 * Maximum times a macvtap device can be opened. This can be used to
  17 * configure the number of receive queue, e.g. for multiqueue virtio.
  18 */
  19#define MAX_TAP_QUEUES  256
  20
  21#define MACVLAN_MC_FILTER_BITS  8
  22#define MACVLAN_MC_FILTER_SZ    (1 << MACVLAN_MC_FILTER_BITS)
  23
  24struct macvlan_dev {
  25        struct net_device       *dev;
  26        struct list_head        list;
  27        struct hlist_node       hlist;
  28        struct macvlan_port     *port;
  29        struct net_device       *lowerdev;
  30        void                    *fwd_priv;
  31        struct vlan_pcpu_stats __percpu *pcpu_stats;
  32
  33        DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
  34
  35        netdev_features_t       set_features;
  36        enum macvlan_mode       mode;
  37        u16                     flags;
  38        /* This array tracks active taps. */
  39        struct tap_queue        __rcu *taps[MAX_TAP_QUEUES];
  40        /* This list tracks all taps (both enabled and disabled) */
  41        struct list_head        queue_list;
  42        int                     numvtaps;
  43        int                     numqueues;
  44        netdev_features_t       tap_features;
  45        int                     minor;
  46        int                     nest_level;
  47#ifdef CONFIG_NET_POLL_CONTROLLER
  48        struct netpoll          *netpoll;
  49#endif
  50        unsigned int            macaddr_count;
  51};
  52
  53static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
  54                                    unsigned int len, bool success,
  55                                    bool multicast)
  56{
  57        if (likely(success)) {
  58                struct vlan_pcpu_stats *pcpu_stats;
  59
  60                pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
  61                u64_stats_update_begin(&pcpu_stats->syncp);
  62                pcpu_stats->rx_packets++;
  63                pcpu_stats->rx_bytes += len;
  64                if (multicast)
  65                        pcpu_stats->rx_multicast++;
  66                u64_stats_update_end(&pcpu_stats->syncp);
  67        } else {
  68                this_cpu_inc(vlan->pcpu_stats->rx_errors);
  69        }
  70}
  71
  72extern void macvlan_common_setup(struct net_device *dev);
  73
  74extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
  75                                  struct nlattr *tb[], struct nlattr *data[]);
  76
  77extern void macvlan_count_rx(const struct macvlan_dev *vlan,
  78                             unsigned int len, bool success,
  79                             bool multicast);
  80
  81extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
  82
  83extern int macvlan_link_register(struct rtnl_link_ops *ops);
  84
  85#if IS_ENABLED(CONFIG_MACVLAN)
  86static inline struct net_device *
  87macvlan_dev_real_dev(const struct net_device *dev)
  88{
  89        struct macvlan_dev *macvlan = netdev_priv(dev);
  90
  91        return macvlan->lowerdev;
  92}
  93#else
  94static inline struct net_device *
  95macvlan_dev_real_dev(const struct net_device *dev)
  96{
  97        BUG();
  98        return NULL;
  99}
 100#endif
 101
 102#endif /* _LINUX_IF_MACVLAN_H */
 103