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         netdevice_tracker       dev_tracker;
  25         void                    *accel_priv;
  26         struct vlan_pcpu_stats __percpu *pcpu_stats;
  27
  28         DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
  29
  30         netdev_features_t       set_features;
  31         enum macvlan_mode       mode;
  32         u16                     flags;
  33         unsigned int            macaddr_count;
  34         u32                     bc_queue_len_req;
  35 #ifdef CONFIG_NET_POLL_CONTROLLER
  36         struct netpoll          *netpoll;
  37 #endif
  38 };
  39
  40 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
  41                                     unsigned int len, bool success,
  42                                     bool multicast)
  43 {
  44         if (likely(success)) {
  45                 struct vlan_pcpu_stats *pcpu_stats;
  46
  47                 pcpu_stats = get_cpu_ptr(vlan->pcpu_stats);
  48                 u64_stats_update_begin(&pcpu_stats->syncp);
  49                 u64_stats_inc(&pcpu_stats->rx_packets);
  50                 u64_stats_add(&pcpu_stats->rx_bytes, len);
  51                 if (multicast)
  52                         u64_stats_inc(&pcpu_stats->rx_multicast);
  53                 u64_stats_update_end(&pcpu_stats->syncp);
  54                 put_cpu_ptr(vlan->pcpu_stats);
  55         } else {
  56                 this_cpu_inc(vlan->pcpu_stats->rx_errors);
  57         }
  58 }
  59
  60 extern void macvlan_common_setup(struct net_device *dev);
  61
  62 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
  63                                   struct nlattr *tb[], struct nlattr *data[],
  64                                   struct netlink_ext_ack *extack);
  65
  66 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
  67
  68 extern int macvlan_link_register(struct rtnl_link_ops *ops);
  69
  70 #if IS_ENABLED(CONFIG_MACVLAN)
  71 static inline struct net_device *
  72 macvlan_dev_real_dev(const struct net_device *dev)
  73 {
  74         struct macvlan_dev *macvlan = netdev_priv(dev);
  75
  76         return macvlan->lowerdev;
  77 }
  78 #else
  79 static inline struct net_device *
  80 macvlan_dev_real_dev(const struct net_device *dev)
  81 {
  82         BUG();
  83         return NULL;
  84 }
  85 #endif
  86
  87 static inline void *macvlan_accel_priv(struct net_device *dev)
  88 {
  89         struct macvlan_dev *macvlan = netdev_priv(dev);
  90
  91         return macvlan->accel_priv;
  92 }
  93
  94 static inline bool macvlan_supports_dest_filter(struct net_device *dev)
  95 {
  96         struct macvlan_dev *macvlan = netdev_priv(dev);
  97
  98         return macvlan->mode == MACVLAN_MODE_PRIVATE ||
  99                macvlan->mode == MACVLAN_MODE_VEPA ||
 100                macvlan->mode == MACVLAN_MODE_BRIDGE;
 101 }
 102
 103 static inline int macvlan_release_l2fw_offload(struct net_device *dev)
 104 {
 105         struct macvlan_dev *macvlan = netdev_priv(dev);
 106
 107         macvlan->accel_priv = NULL;
 108         return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
 109 }
 110 #endif /* _LINUX_IF_MACVLAN_H */