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 int vlan_filter_push_vids(struct vlan_info *vlan_info, __be16 proto);
101 void vlan_filter_drop_vids(struct vlan_info *vlan_info, __be16 proto);
103 /* found in vlan_dev.c */
104 void vlan_dev_set_ingress_priority(const struct net_device *dev,
105 u32 skb_prio, u16 vlan_prio);
106 int vlan_dev_set_egress_priority(const struct net_device *dev,
107 u32 skb_prio, u16 vlan_prio);
108 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
109 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
111 int vlan_check_real_dev(struct net_device *real_dev,
112 __be16 protocol, u16 vlan_id);
113 void vlan_setup(struct net_device *dev);
114 int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack);
115 void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
116 bool vlan_dev_inherit_address(struct net_device *dev,
117 struct net_device *real_dev);
119 static inline u32 vlan_get_ingress_priority(struct net_device *dev,
122 struct vlan_dev_priv *vip = vlan_dev_priv(dev);
124 return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
127 #ifdef CONFIG_VLAN_8021Q_GVRP
128 int vlan_gvrp_request_join(const struct net_device *dev);
129 void vlan_gvrp_request_leave(const struct net_device *dev);
130 int vlan_gvrp_init_applicant(struct net_device *dev);
131 void vlan_gvrp_uninit_applicant(struct net_device *dev);
132 int vlan_gvrp_init(void);
133 void vlan_gvrp_uninit(void);
135 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
136 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
137 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
138 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
139 static inline int vlan_gvrp_init(void) { return 0; }
140 static inline void vlan_gvrp_uninit(void) {}
143 #ifdef CONFIG_VLAN_8021Q_MVRP
144 int vlan_mvrp_request_join(const struct net_device *dev);
145 void vlan_mvrp_request_leave(const struct net_device *dev);
146 int vlan_mvrp_init_applicant(struct net_device *dev);
147 void vlan_mvrp_uninit_applicant(struct net_device *dev);
148 int vlan_mvrp_init(void);
149 void vlan_mvrp_uninit(void);
151 static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
152 static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
153 static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
154 static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
155 static inline int vlan_mvrp_init(void) { return 0; }
156 static inline void vlan_mvrp_uninit(void) {}
159 extern const char vlan_fullname[];
160 extern const char vlan_version[];
161 int vlan_netlink_init(void);
162 void vlan_netlink_fini(void);
164 extern struct rtnl_link_ops vlan_link_ops;
166 extern unsigned int vlan_net_id;
168 struct proc_dir_entry;
172 struct proc_dir_entry *proc_vlan_dir;
173 /* /proc/net/vlan/config */
174 struct proc_dir_entry *proc_vlan_conf;
175 /* Determines interface naming scheme. */
176 unsigned short name_type;
179 #endif /* !(__BEN_VLAN_802_1Q_INC__) */