1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __BEN_VLAN_802_1Q_INC__
3 #define __BEN_VLAN_802_1Q_INC__
5 #include <linux/if_vlan.h>
6 #include <linux/u64_stats_sync.h>
7 #include <linux/list.h>
9 /* if this changes, algorithm will have to be reworked because this
10 * depends on completely exhausting the VLAN identifier space. Thus
11 * it gives constant time look-up, but in many cases it wastes memory.
13 #define VLAN_GROUP_ARRAY_SPLIT_PARTS 8
14 #define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
23 unsigned int nr_vlan_devs;
24 struct hlist_node hlist; /* linked list */
25 struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
26 [VLAN_GROUP_ARRAY_SPLIT_PARTS];
30 struct net_device *real_dev; /* The ethernet(like) device
31 * the vlan is attached to.
33 struct vlan_group grp;
34 struct list_head vid_list;
39 static inline unsigned int vlan_proto_idx(__be16 proto)
42 case htons(ETH_P_8021Q):
43 return VLAN_PROTO_8021Q;
44 case htons(ETH_P_8021AD):
45 return VLAN_PROTO_8021AD;
52 static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
56 struct net_device **array;
58 array = vg->vlan_devices_arrays[pidx]
59 [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
60 return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
63 static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
67 return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id);
70 static inline void vlan_group_set_device(struct vlan_group *vg,
71 __be16 vlan_proto, u16 vlan_id,
72 struct net_device *dev)
74 struct net_device **array;
77 array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)]
78 [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
79 array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
82 /* Must be invoked with rcu_read_lock or with RTNL. */
83 static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
84 __be16 vlan_proto, u16 vlan_id)
86 struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
89 return vlan_group_get_device(&vlan_info->grp,
95 #define vlan_group_for_each_dev(grp, i, dev) \
96 for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
97 if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
100 /* found in vlan_dev.c */
101 void vlan_dev_set_ingress_priority(const struct net_device *dev,
102 u32 skb_prio, u16 vlan_prio);
103 int vlan_dev_set_egress_priority(const struct net_device *dev,
104 u32 skb_prio, u16 vlan_prio);
105 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
106 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
108 int vlan_check_real_dev(struct net_device *real_dev,
109 __be16 protocol, u16 vlan_id);
110 void vlan_setup(struct net_device *dev);
111 int register_vlan_dev(struct net_device *dev);
112 void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
113 void vlan_dev_uninit(struct net_device *dev);
114 bool vlan_dev_inherit_address(struct net_device *dev,
115 struct net_device *real_dev);
117 static inline u32 vlan_get_ingress_priority(struct net_device *dev,
120 struct vlan_dev_priv *vip = vlan_dev_priv(dev);
122 return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
125 #ifdef CONFIG_VLAN_8021Q_GVRP
126 int vlan_gvrp_request_join(const struct net_device *dev);
127 void vlan_gvrp_request_leave(const struct net_device *dev);
128 int vlan_gvrp_init_applicant(struct net_device *dev);
129 void vlan_gvrp_uninit_applicant(struct net_device *dev);
130 int vlan_gvrp_init(void);
131 void vlan_gvrp_uninit(void);
133 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
134 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
135 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
136 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
137 static inline int vlan_gvrp_init(void) { return 0; }
138 static inline void vlan_gvrp_uninit(void) {}
141 #ifdef CONFIG_VLAN_8021Q_MVRP
142 int vlan_mvrp_request_join(const struct net_device *dev);
143 void vlan_mvrp_request_leave(const struct net_device *dev);
144 int vlan_mvrp_init_applicant(struct net_device *dev);
145 void vlan_mvrp_uninit_applicant(struct net_device *dev);
146 int vlan_mvrp_init(void);
147 void vlan_mvrp_uninit(void);
149 static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
150 static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
151 static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
152 static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
153 static inline int vlan_mvrp_init(void) { return 0; }
154 static inline void vlan_mvrp_uninit(void) {}
157 extern const char vlan_fullname[];
158 extern const char vlan_version[];
159 int vlan_netlink_init(void);
160 void vlan_netlink_fini(void);
162 extern struct rtnl_link_ops vlan_link_ops;
164 extern unsigned int vlan_net_id;
166 struct proc_dir_entry;
170 struct proc_dir_entry *proc_vlan_dir;
171 /* /proc/net/vlan/config */
172 struct proc_dir_entry *proc_vlan_conf;
173 /* Determines interface naming scheme. */
174 unsigned short name_type;
177 #endif /* !(__BEN_VLAN_802_1Q_INC__) */