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 *fwd_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 int nest_level; 33 #ifdef CONFIG_NET_POLL_CONTROLLER 34 struct netpoll *netpoll; 35 #endif 36 unsigned int macaddr_count; 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 = this_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 } else { 54 this_cpu_inc(vlan->pcpu_stats->rx_errors); 55 } 56 } 57 58 extern void macvlan_common_setup(struct net_device *dev); 59 60 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, 61 struct nlattr *tb[], struct nlattr *data[], 62 struct netlink_ext_ack *extack); 63 64 extern void macvlan_count_rx(const struct macvlan_dev *vlan, 65 unsigned int len, bool success, 66 bool multicast); 67 68 extern void macvlan_dellink(struct net_device *dev, struct list_head *head); 69 70 extern int macvlan_link_register(struct rtnl_link_ops *ops); 71 72 #if IS_ENABLED(CONFIG_MACVLAN) 73 static inline struct net_device * 74 macvlan_dev_real_dev(const struct net_device *dev) 75 { 76 struct macvlan_dev *macvlan = netdev_priv(dev); 77 78 return macvlan->lowerdev; 79 } 80 #else 81 static inline struct net_device * 82 macvlan_dev_real_dev(const struct net_device *dev) 83 { 84 BUG(); 85 return NULL; 86 } 87 #endif 88 89 #endif /* _LINUX_IF_MACVLAN_H */ 90