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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 | #include <linux/list.h> | |
7 | ||
8 | ||
9 | /** | |
10 | * struct vlan_priority_tci_mapping - vlan egress priority mappings | |
11 | * @priority: skb priority | |
12 | * @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000 | |
13 | * @next: pointer to next struct | |
14 | */ | |
15 | struct vlan_priority_tci_mapping { | |
16 | u32 priority; | |
17 | u16 vlan_qos; | |
18 | struct vlan_priority_tci_mapping *next; | |
19 | }; | |
20 | ||
21 | ||
22 | /** | |
23 | * struct vlan_pcpu_stats - VLAN percpu rx/tx stats | |
24 | * @rx_packets: number of received packets | |
25 | * @rx_bytes: number of received bytes | |
26 | * @rx_multicast: number of received multicast packets | |
27 | * @tx_packets: number of transmitted packets | |
28 | * @tx_bytes: number of transmitted bytes | |
29 | * @syncp: synchronization point for 64bit counters | |
30 | * @rx_errors: number of rx errors | |
31 | * @tx_dropped: number of tx drops | |
32 | */ | |
33 | struct vlan_pcpu_stats { | |
34 | u64 rx_packets; | |
35 | u64 rx_bytes; | |
36 | u64 rx_multicast; | |
37 | u64 tx_packets; | |
38 | u64 tx_bytes; | |
39 | struct u64_stats_sync syncp; | |
40 | u32 rx_errors; | |
41 | u32 tx_dropped; | |
42 | }; | |
43 | ||
44 | struct netpoll; | |
45 | ||
46 | /** | |
47 | * struct vlan_dev_priv - VLAN private device data | |
48 | * @nr_ingress_mappings: number of ingress priority mappings | |
49 | * @ingress_priority_map: ingress priority mappings | |
50 | * @nr_egress_mappings: number of egress priority mappings | |
51 | * @egress_priority_map: hash of egress priority mappings | |
52 | * @vlan_proto: VLAN encapsulation protocol | |
53 | * @vlan_id: VLAN identifier | |
54 | * @flags: device flags | |
55 | * @real_dev: underlying netdevice | |
56 | * @real_dev_addr: address of underlying netdevice | |
57 | * @dent: proc dir entry | |
58 | * @vlan_pcpu_stats: ptr to percpu rx stats | |
59 | */ | |
60 | struct vlan_dev_priv { | |
61 | unsigned int nr_ingress_mappings; | |
62 | u32 ingress_priority_map[8]; | |
63 | unsigned int nr_egress_mappings; | |
64 | struct vlan_priority_tci_mapping *egress_priority_map[16]; | |
65 | ||
66 | __be16 vlan_proto; | |
67 | u16 vlan_id; | |
68 | u16 flags; | |
69 | ||
70 | struct net_device *real_dev; | |
71 | unsigned char real_dev_addr[ETH_ALEN]; | |
72 | ||
73 | struct proc_dir_entry *dent; | |
74 | struct vlan_pcpu_stats __percpu *vlan_pcpu_stats; | |
75 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
76 | struct netpoll *netpoll; | |
77 | #endif | |
78 | }; | |
79 | ||
80 | static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev) | |
81 | { | |
82 | return netdev_priv(dev); | |
83 | } | |
84 | ||
85 | /* if this changes, algorithm will have to be reworked because this | |
86 | * depends on completely exhausting the VLAN identifier space. Thus | |
87 | * it gives constant time look-up, but in many cases it wastes memory. | |
88 | */ | |
89 | #define VLAN_GROUP_ARRAY_SPLIT_PARTS 8 | |
90 | #define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS) | |
91 | ||
92 | enum vlan_protos { | |
93 | VLAN_PROTO_8021Q = 0, | |
94 | VLAN_PROTO_8021AD, | |
95 | VLAN_PROTO_NUM, | |
96 | }; | |
97 | ||
98 | struct vlan_group { | |
99 | unsigned int nr_vlan_devs; | |
100 | struct hlist_node hlist; /* linked list */ | |
101 | struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM] | |
102 | [VLAN_GROUP_ARRAY_SPLIT_PARTS]; | |
103 | }; | |
104 | ||
105 | struct vlan_info { | |
106 | struct net_device *real_dev; /* The ethernet(like) device | |
107 | * the vlan is attached to. | |
108 | */ | |
109 | struct vlan_group grp; | |
110 | struct list_head vid_list; | |
111 | unsigned int nr_vids; | |
112 | struct rcu_head rcu; | |
113 | }; | |
114 | ||
115 | static inline unsigned int vlan_proto_idx(__be16 proto) | |
116 | { | |
117 | switch (proto) { | |
118 | case __constant_htons(ETH_P_8021Q): | |
119 | return VLAN_PROTO_8021Q; | |
120 | case __constant_htons(ETH_P_8021AD): | |
121 | return VLAN_PROTO_8021AD; | |
122 | default: | |
123 | BUG(); | |
124 | return 0; | |
125 | } | |
126 | } | |
127 | ||
128 | static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg, | |
129 | unsigned int pidx, | |
130 | u16 vlan_id) | |
131 | { | |
132 | struct net_device **array; | |
133 | ||
134 | array = vg->vlan_devices_arrays[pidx] | |
135 | [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; | |
136 | return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL; | |
137 | } | |
138 | ||
139 | static inline struct net_device *vlan_group_get_device(struct vlan_group *vg, | |
140 | __be16 vlan_proto, | |
141 | u16 vlan_id) | |
142 | { | |
143 | return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id); | |
144 | } | |
145 | ||
146 | static inline void vlan_group_set_device(struct vlan_group *vg, | |
147 | __be16 vlan_proto, u16 vlan_id, | |
148 | struct net_device *dev) | |
149 | { | |
150 | struct net_device **array; | |
151 | if (!vg) | |
152 | return; | |
153 | array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)] | |
154 | [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; | |
155 | array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev; | |
156 | } | |
157 | ||
158 | /* Must be invoked with rcu_read_lock or with RTNL. */ | |
159 | static inline struct net_device *vlan_find_dev(struct net_device *real_dev, | |
160 | __be16 vlan_proto, u16 vlan_id) | |
161 | { | |
162 | struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info); | |
163 | ||
164 | if (vlan_info) | |
165 | return vlan_group_get_device(&vlan_info->grp, | |
166 | vlan_proto, vlan_id); | |
167 | ||
168 | return NULL; | |
169 | } | |
170 | ||
171 | #define vlan_group_for_each_dev(grp, i, dev) \ | |
172 | for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \ | |
173 | if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \ | |
174 | (i) % VLAN_N_VID))) | |
175 | ||
176 | /* found in vlan_dev.c */ | |
177 | void vlan_dev_set_ingress_priority(const struct net_device *dev, | |
178 | u32 skb_prio, u16 vlan_prio); | |
179 | int vlan_dev_set_egress_priority(const struct net_device *dev, | |
180 | u32 skb_prio, u16 vlan_prio); | |
181 | int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask); | |
182 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result); | |
183 | ||
184 | int vlan_check_real_dev(struct net_device *real_dev, | |
185 | __be16 protocol, u16 vlan_id); | |
186 | void vlan_setup(struct net_device *dev); | |
187 | int register_vlan_dev(struct net_device *dev); | |
188 | void unregister_vlan_dev(struct net_device *dev, struct list_head *head); | |
189 | ||
190 | static inline u32 vlan_get_ingress_priority(struct net_device *dev, | |
191 | u16 vlan_tci) | |
192 | { | |
193 | struct vlan_dev_priv *vip = vlan_dev_priv(dev); | |
194 | ||
195 | return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7]; | |
196 | } | |
197 | ||
198 | #ifdef CONFIG_VLAN_8021Q_GVRP | |
199 | extern int vlan_gvrp_request_join(const struct net_device *dev); | |
200 | extern void vlan_gvrp_request_leave(const struct net_device *dev); | |
201 | extern int vlan_gvrp_init_applicant(struct net_device *dev); | |
202 | extern void vlan_gvrp_uninit_applicant(struct net_device *dev); | |
203 | extern int vlan_gvrp_init(void); | |
204 | extern void vlan_gvrp_uninit(void); | |
205 | #else | |
206 | static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; } | |
207 | static inline void vlan_gvrp_request_leave(const struct net_device *dev) {} | |
208 | static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; } | |
209 | static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {} | |
210 | static inline int vlan_gvrp_init(void) { return 0; } | |
211 | static inline void vlan_gvrp_uninit(void) {} | |
212 | #endif | |
213 | ||
214 | #ifdef CONFIG_VLAN_8021Q_MVRP | |
215 | extern int vlan_mvrp_request_join(const struct net_device *dev); | |
216 | extern void vlan_mvrp_request_leave(const struct net_device *dev); | |
217 | extern int vlan_mvrp_init_applicant(struct net_device *dev); | |
218 | extern void vlan_mvrp_uninit_applicant(struct net_device *dev); | |
219 | extern int vlan_mvrp_init(void); | |
220 | extern void vlan_mvrp_uninit(void); | |
221 | #else | |
222 | static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; } | |
223 | static inline void vlan_mvrp_request_leave(const struct net_device *dev) {} | |
224 | static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; } | |
225 | static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {} | |
226 | static inline int vlan_mvrp_init(void) { return 0; } | |
227 | static inline void vlan_mvrp_uninit(void) {} | |
228 | #endif | |
229 | ||
230 | extern const char vlan_fullname[]; | |
231 | extern const char vlan_version[]; | |
232 | extern int vlan_netlink_init(void); | |
233 | extern void vlan_netlink_fini(void); | |
234 | ||
235 | extern struct rtnl_link_ops vlan_link_ops; | |
236 | ||
237 | extern int vlan_net_id; | |
238 | ||
239 | struct proc_dir_entry; | |
240 | ||
241 | struct vlan_net { | |
242 | /* /proc/net/vlan */ | |
243 | struct proc_dir_entry *proc_vlan_dir; | |
244 | /* /proc/net/vlan/config */ | |
245 | struct proc_dir_entry *proc_vlan_conf; | |
246 | /* Determines interface naming scheme. */ | |
247 | unsigned short name_type; | |
248 | }; | |
249 | ||
250 | #endif /* !(__BEN_VLAN_802_1Q_INC__) */ |