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 */ 108