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                    *accel_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         unsigned int            macaddr_count;
  33         u32                     bc_queue_len_req;
  34 #ifdef CONFIG_NET_POLL_CONTROLLER
  35         struct netpoll          *netpoll;
  36 #endif
  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 = get_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                 put_cpu_ptr(vlan->pcpu_stats);
  54         } else {
  55                 this_cpu_inc(vlan->pcpu_stats->rx_errors);
  56         }
  57 }
  58
  59 extern void macvlan_common_setup(struct net_device *dev);
  60
  61 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
  62                                   struct nlattr *tb[], struct nlattr *data[],
  63                                   struct netlink_ext_ack *extack);
  64
  65 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
  66
  67 extern int macvlan_link_register(struct rtnl_link_ops *ops);
  68
  69 #if IS_ENABLED(CONFIG_MACVLAN)
  70 static inline struct net_device *
  71 macvlan_dev_real_dev(const struct net_device *dev)
  72 {
  73         struct macvlan_dev *macvlan = netdev_priv(dev);
  74
  75         return macvlan->lowerdev;
  76 }
  77 #else
  78 static inline struct net_device *
  79 macvlan_dev_real_dev(const struct net_device *dev)
  80 {
  81         BUG();
  82         return NULL;
  83 }
  84 #endif
  85
  86 static inline void *macvlan_accel_priv(struct net_device *dev)
  87 {
  88         struct macvlan_dev *macvlan = netdev_priv(dev);
  89
  90         return macvlan->accel_priv;
  91 }
  92
  93 static inline bool macvlan_supports_dest_filter(struct net_device *dev)
  94 {
  95         struct macvlan_dev *macvlan = netdev_priv(dev);
  96
  97         return macvlan->mode == MACVLAN_MODE_PRIVATE ||
  98                macvlan->mode == MACVLAN_MODE_VEPA ||
  99                macvlan->mode == MACVLAN_MODE_BRIDGE;
 100 }
 101
 102 static inline int macvlan_release_l2fw_offload(struct net_device *dev)
 103 {
 104         struct macvlan_dev *macvlan = netdev_priv(dev);
 105
 106         macvlan->accel_priv = NULL;
 107         return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
 108 }
 109 #endif /* _LINUX_IF_MACVLAN_H */