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
vlan_dev_priv(const struct net_device * dev)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
vlan_proto_idx(__be16 proto)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
__vlan_group_get_device(struct vlan_group * vg,unsigned int pidx,u16 vlan_id)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
vlan_group_get_device(struct vlan_group * vg,__be16 vlan_proto,u16 vlan_id)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
vlan_group_set_device(struct vlan_group * vg,__be16 vlan_proto,u16 vlan_id,struct net_device * dev)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. */
vlan_find_dev(struct net_device * real_dev,__be16 vlan_proto,u16 vlan_id)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
vlan_get_ingress_priority(struct net_device * dev,u16 vlan_tci)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
vlan_gvrp_request_join(const struct net_device * dev)206 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
vlan_gvrp_request_leave(const struct net_device * dev)207 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
vlan_gvrp_init_applicant(struct net_device * dev)208 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
vlan_gvrp_uninit_applicant(struct net_device * dev)209 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
vlan_gvrp_init(void)210 static inline int vlan_gvrp_init(void) { return 0; }
vlan_gvrp_uninit(void)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
vlan_mvrp_request_join(const struct net_device * dev)222 static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
vlan_mvrp_request_leave(const struct net_device * dev)223 static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
vlan_mvrp_init_applicant(struct net_device * dev)224 static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
vlan_mvrp_uninit_applicant(struct net_device * dev)225 static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
vlan_mvrp_init(void)226 static inline int vlan_mvrp_init(void) { return 0; }
vlan_mvrp_uninit(void)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__) */
251