root/include/linux/if_macvlan.h

INCLUDED FROM

DEFINITIONS

1. macvlan_count_rx
2. macvlan_dev_real_dev
3. macvlan_dev_real_dev
4. macvlan_accel_priv
5. macvlan_supports_dest_filter
6. macvlan_release_l2fw_offload

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