1 #ifndef __BEN_VLAN_802_1Q_INC__ 2 #define __BEN_VLAN_802_1Q_INC__ 3 4 #include <linux/if_vlan.h> 5 #include <linux/u64_stats_sync.h> 6 7 8 /** 9 * struct vlan_priority_tci_mapping - vlan egress priority mappings 10 * @priority: skb priority 11 * @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000 12 * @next: pointer to next struct 13 */ 14 struct vlan_priority_tci_mapping { 15 u32 priority; 16 u16 vlan_qos; 17 struct vlan_priority_tci_mapping *next; 18 }; 19 20 21 /** 22 * struct vlan_rx_stats - VLAN percpu rx stats 23 * @rx_packets: number of received packets 24 * @rx_bytes: number of received bytes 25 * @rx_multicast: number of received multicast packets 26 * @syncp: synchronization point for 64bit counters 27 * @rx_errors: number of errors 28 */ 29 struct vlan_rx_stats { 30 u64 rx_packets; 31 u64 rx_bytes; 32 u64 rx_multicast; 33 struct u64_stats_sync syncp; 34 unsigned long rx_errors; 35 }; 36 37 /** 38 * struct vlan_dev_info - VLAN private device data 39 * @nr_ingress_mappings: number of ingress priority mappings 40 * @ingress_priority_map: ingress priority mappings 41 * @nr_egress_mappings: number of egress priority mappings 42 * @egress_priority_map: hash of egress priority mappings 43 * @vlan_id: VLAN identifier 44 * @flags: device flags 45 * @real_dev: underlying netdevice 46 * @real_dev_addr: address of underlying netdevice 47 * @dent: proc dir entry 48 * @cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX 49 * @cnt_encap_on_xmit: statistic - number of skb encapsulations on TX 50 * @vlan_rx_stats: ptr to percpu rx stats 51 */ 52 struct vlan_dev_info { 53 unsigned int nr_ingress_mappings; 54 u32 ingress_priority_map[8]; 55 unsigned int nr_egress_mappings; 56 struct vlan_priority_tci_mapping *egress_priority_map[16]; 57 58 u16 vlan_id; 59 u16 flags; 60 61 struct net_device *real_dev; 62 unsigned char real_dev_addr[ETH_ALEN]; 63 64 struct proc_dir_entry *dent; 65 unsigned long cnt_inc_headroom_on_tx; 66 unsigned long cnt_encap_on_xmit; 67 struct vlan_rx_stats __percpu *vlan_rx_stats; 68 }; 69 70 static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev) 71 { 72 return netdev_priv(dev); 73 } 74 75 #define VLAN_GRP_HASH_SHIFT 5 76 #define VLAN_GRP_HASH_SIZE (1 << VLAN_GRP_HASH_SHIFT) 77 #define VLAN_GRP_HASH_MASK (VLAN_GRP_HASH_SIZE - 1) 78 79 /* Find a VLAN device by the MAC address of its Ethernet device, and 80 * it's VLAN ID. The default configuration is to have VLAN's scope 81 * to be box-wide, so the MAC will be ignored. The mac will only be 82 * looked at if we are configured to have a separate set of VLANs per 83 * each MAC addressable interface. Note that this latter option does 84 * NOT follow the spec for VLANs, but may be useful for doing very 85 * large quantities of VLAN MUX/DEMUX onto FrameRelay or ATM PVCs. 86 * 87 * Must be invoked with rcu_read_lock (ie preempt disabled) 88 * or with RTNL. 89 */ 90 struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id); 91 92 /* found in vlan_dev.c */ 93 int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, 94 struct packet_type *ptype, struct net_device *orig_dev); 95 void vlan_dev_set_ingress_priority(const struct net_device *dev, 96 u32 skb_prio, u16 vlan_prio); 97 int vlan_dev_set_egress_priority(const struct net_device *dev, 98 u32 skb_prio, u16 vlan_prio); 99 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask); 100 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result); 101 102 int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id); 103 void vlan_setup(struct net_device *dev); 104 int register_vlan_dev(struct net_device *dev); 105 void unregister_vlan_dev(struct net_device *dev, struct list_head *head); 106 107 static inline u32 vlan_get_ingress_priority(struct net_device *dev, 108 u16 vlan_tci) 109 { 110 struct vlan_dev_info *vip = vlan_dev_info(dev); 111 112 return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7]; 113 } 114 115 #ifdef CONFIG_VLAN_8021Q_GVRP 116 extern int vlan_gvrp_request_join(const struct net_device *dev); 117 extern void vlan_gvrp_request_leave(const struct net_device *dev); 118 extern int vlan_gvrp_init_applicant(struct net_device *dev); 119 extern void vlan_gvrp_uninit_applicant(struct net_device *dev); 120 extern int vlan_gvrp_init(void); 121 extern void vlan_gvrp_uninit(void); 122 #else 123 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; } 124 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {} 125 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; } 126 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {} 127 static inline int vlan_gvrp_init(void) { return 0; } 128 static inline void vlan_gvrp_uninit(void) {} 129 #endif 130 131 extern const char vlan_fullname[]; 132 extern const char vlan_version[]; 133 extern int vlan_netlink_init(void); 134 extern void vlan_netlink_fini(void); 135 136 extern struct rtnl_link_ops vlan_link_ops; 137 138 static inline int is_vlan_dev(struct net_device *dev) 139 { 140 return dev->priv_flags & IFF_802_1Q_VLAN; 141 } 142 143 extern int vlan_net_id; 144 145 struct proc_dir_entry; 146 147 struct vlan_net { 148 /* /proc/net/vlan */ 149 struct proc_dir_entry *proc_vlan_dir; 150 /* /proc/net/vlan/config */ 151 struct proc_dir_entry *proc_vlan_conf; 152 /* Determines interface naming scheme. */ 153 unsigned short name_type; 154 }; 155 156 #endif /* !(__BEN_VLAN_802_1Q_INC__) */ 157