LXR linux/include/linux/if

   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
  13struct macvlan_port;
  14
  15#define MACVLAN_MC_FILTER_BITS  8
  16#define MACVLAN_MC_FILTER_SZ    (1 << MACVLAN_MC_FILTER_BITS)
  17
  18struct 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
  40static 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                pcpu_stats->rx_packets++;
  50                pcpu_stats->rx_bytes += len;
  51                if (multicast)
  52                        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
  60extern void macvlan_common_setup(struct net_device *dev);
  61
  62extern 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
  66extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
  67
  68extern int macvlan_link_register(struct rtnl_link_ops *ops);
  69
  70#if IS_ENABLED(CONFIG_MACVLAN)
  71static inline struct net_device *
  72macvlan_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
  79static inline struct net_device *
  80macvlan_dev_real_dev(const struct net_device *dev)
  81{
  82        BUG();
  83        return NULL;
  84}
  85#endif
  86
  87static 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
  94static 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
 103static 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 */
 111