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1da177e4 LT |
1 | #ifndef __BEN_VLAN_802_1Q_INC__ |
2 | #define __BEN_VLAN_802_1Q_INC__ | |
3 | ||
4 | #include <linux/if_vlan.h> | |
9618e2ff | 5 | #include <linux/u64_stats_sync.h> |
5b9ea6e0 | 6 | #include <linux/list.h> |
1da177e4 | 7 | |
5b9ea6e0 JP |
8 | /* if this changes, algorithm will have to be reworked because this |
9 | * depends on completely exhausting the VLAN identifier space. Thus | |
10 | * it gives constant time look-up, but in many cases it wastes memory. | |
11 | */ | |
12 | #define VLAN_GROUP_ARRAY_SPLIT_PARTS 8 | |
13 | #define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS) | |
14 | ||
1fd9b1fc PM |
15 | enum vlan_protos { |
16 | VLAN_PROTO_8021Q = 0, | |
8ad227ff | 17 | VLAN_PROTO_8021AD, |
1fd9b1fc PM |
18 | VLAN_PROTO_NUM, |
19 | }; | |
20 | ||
5b9ea6e0 JP |
21 | struct vlan_group { |
22 | unsigned int nr_vlan_devs; | |
23 | struct hlist_node hlist; /* linked list */ | |
1fd9b1fc PM |
24 | struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM] |
25 | [VLAN_GROUP_ARRAY_SPLIT_PARTS]; | |
5b9ea6e0 JP |
26 | }; |
27 | ||
28 | struct vlan_info { | |
29 | struct net_device *real_dev; /* The ethernet(like) device | |
30 | * the vlan is attached to. | |
31 | */ | |
32 | struct vlan_group grp; | |
33 | struct list_head vid_list; | |
34 | unsigned int nr_vids; | |
35 | struct rcu_head rcu; | |
36 | }; | |
37 | ||
1fd9b1fc PM |
38 | static inline unsigned int vlan_proto_idx(__be16 proto) |
39 | { | |
40 | switch (proto) { | |
f0e78826 | 41 | case htons(ETH_P_8021Q): |
1fd9b1fc | 42 | return VLAN_PROTO_8021Q; |
f0e78826 | 43 | case htons(ETH_P_8021AD): |
8ad227ff | 44 | return VLAN_PROTO_8021AD; |
1fd9b1fc PM |
45 | default: |
46 | BUG(); | |
8da63a65 | 47 | return 0; |
1fd9b1fc PM |
48 | } |
49 | } | |
50 | ||
51 | static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg, | |
52 | unsigned int pidx, | |
53 | u16 vlan_id) | |
536d1d4a JP |
54 | { |
55 | struct net_device **array; | |
1fd9b1fc PM |
56 | |
57 | array = vg->vlan_devices_arrays[pidx] | |
58 | [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; | |
536d1d4a JP |
59 | return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL; |
60 | } | |
61 | ||
1fd9b1fc PM |
62 | static inline struct net_device *vlan_group_get_device(struct vlan_group *vg, |
63 | __be16 vlan_proto, | |
64 | u16 vlan_id) | |
65 | { | |
66 | return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id); | |
67 | } | |
68 | ||
536d1d4a | 69 | static inline void vlan_group_set_device(struct vlan_group *vg, |
1fd9b1fc | 70 | __be16 vlan_proto, u16 vlan_id, |
536d1d4a JP |
71 | struct net_device *dev) |
72 | { | |
73 | struct net_device **array; | |
74 | if (!vg) | |
75 | return; | |
1fd9b1fc PM |
76 | array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)] |
77 | [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; | |
536d1d4a JP |
78 | array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev; |
79 | } | |
80 | ||
69ecca86 DL |
81 | /* Must be invoked with rcu_read_lock or with RTNL. */ |
82 | static inline struct net_device *vlan_find_dev(struct net_device *real_dev, | |
1fd9b1fc | 83 | __be16 vlan_proto, u16 vlan_id) |
69ecca86 | 84 | { |
5b9ea6e0 | 85 | struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info); |
69ecca86 | 86 | |
5b9ea6e0 | 87 | if (vlan_info) |
1fd9b1fc PM |
88 | return vlan_group_get_device(&vlan_info->grp, |
89 | vlan_proto, vlan_id); | |
69ecca86 DL |
90 | |
91 | return NULL; | |
92 | } | |
93 | ||
1fd9b1fc PM |
94 | #define vlan_group_for_each_dev(grp, i, dev) \ |
95 | for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \ | |
96 | if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \ | |
97 | (i) % VLAN_N_VID))) | |
98 | ||
1da177e4 | 99 | /* found in vlan_dev.c */ |
c17d8874 | 100 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
9bb8582e | 101 | u32 skb_prio, u16 vlan_prio); |
c17d8874 | 102 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
9bb8582e | 103 | u32 skb_prio, u16 vlan_prio); |
b3ce0325 | 104 | int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask); |
c17d8874 | 105 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result); |
1da177e4 | 106 | |
1fd9b1fc PM |
107 | int vlan_check_real_dev(struct net_device *real_dev, |
108 | __be16 protocol, u16 vlan_id); | |
07b5b17e PM |
109 | void vlan_setup(struct net_device *dev); |
110 | int register_vlan_dev(struct net_device *dev); | |
23289a37 | 111 | void unregister_vlan_dev(struct net_device *dev, struct list_head *head); |
ff013a62 MM |
112 | bool vlan_dev_inherit_address(struct net_device *dev, |
113 | struct net_device *real_dev); | |
07b5b17e | 114 | |
7750f403 | 115 | static inline u32 vlan_get_ingress_priority(struct net_device *dev, |
9bb8582e | 116 | u16 vlan_tci) |
7750f403 | 117 | { |
7da82c06 | 118 | struct vlan_dev_priv *vip = vlan_dev_priv(dev); |
7750f403 | 119 | |
05423b24 | 120 | return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7]; |
7750f403 PM |
121 | } |
122 | ||
70c03b49 | 123 | #ifdef CONFIG_VLAN_8021Q_GVRP |
348662a1 JP |
124 | int vlan_gvrp_request_join(const struct net_device *dev); |
125 | void vlan_gvrp_request_leave(const struct net_device *dev); | |
126 | int vlan_gvrp_init_applicant(struct net_device *dev); | |
127 | void vlan_gvrp_uninit_applicant(struct net_device *dev); | |
128 | int vlan_gvrp_init(void); | |
129 | void vlan_gvrp_uninit(void); | |
70c03b49 PM |
130 | #else |
131 | static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; } | |
132 | static inline void vlan_gvrp_request_leave(const struct net_device *dev) {} | |
133 | static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; } | |
134 | static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {} | |
135 | static inline int vlan_gvrp_init(void) { return 0; } | |
136 | static inline void vlan_gvrp_uninit(void) {} | |
137 | #endif | |
138 | ||
86fbe9bb | 139 | #ifdef CONFIG_VLAN_8021Q_MVRP |
348662a1 JP |
140 | int vlan_mvrp_request_join(const struct net_device *dev); |
141 | void vlan_mvrp_request_leave(const struct net_device *dev); | |
142 | int vlan_mvrp_init_applicant(struct net_device *dev); | |
143 | void vlan_mvrp_uninit_applicant(struct net_device *dev); | |
144 | int vlan_mvrp_init(void); | |
145 | void vlan_mvrp_uninit(void); | |
86fbe9bb DW |
146 | #else |
147 | static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; } | |
148 | static inline void vlan_mvrp_request_leave(const struct net_device *dev) {} | |
149 | static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; } | |
150 | static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {} | |
151 | static inline int vlan_mvrp_init(void) { return 0; } | |
152 | static inline void vlan_mvrp_uninit(void) {} | |
153 | #endif | |
154 | ||
b3020061 SH |
155 | extern const char vlan_fullname[]; |
156 | extern const char vlan_version[]; | |
348662a1 JP |
157 | int vlan_netlink_init(void); |
158 | void vlan_netlink_fini(void); | |
07b5b17e PM |
159 | |
160 | extern struct rtnl_link_ops vlan_link_ops; | |
161 | ||
d9ed0f0e PE |
162 | extern int vlan_net_id; |
163 | ||
a59a8c1c PE |
164 | struct proc_dir_entry; |
165 | ||
d9ed0f0e | 166 | struct vlan_net { |
a59a8c1c PE |
167 | /* /proc/net/vlan */ |
168 | struct proc_dir_entry *proc_vlan_dir; | |
169 | /* /proc/net/vlan/config */ | |
170 | struct proc_dir_entry *proc_vlan_conf; | |
7a17a2f7 PE |
171 | /* Determines interface naming scheme. */ |
172 | unsigned short name_type; | |
d9ed0f0e PE |
173 | }; |
174 | ||
1da177e4 | 175 | #endif /* !(__BEN_VLAN_802_1Q_INC__) */ |