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_id: VLAN identifier
53 * @flags: device flags
54 * @real_dev: underlying netdevice
55 * @real_dev_addr: address of underlying netdevice
56 * @dent: proc dir entry
57 * @vlan_pcpu_stats: ptr to percpu rx stats
58 */
59 struct vlan_dev_priv {
60 unsigned int nr_ingress_mappings;
61 u32 ingress_priority_map[8];
62 unsigned int nr_egress_mappings;
63 struct vlan_priority_tci_mapping *egress_priority_map[16];
64
65 u16 vlan_id;
66 u16 flags;
67
68 struct net_device *real_dev;
69 unsigned char real_dev_addr[ETH_ALEN];
70
71 struct proc_dir_entry *dent;
72 struct vlan_pcpu_stats __percpu *vlan_pcpu_stats;
73 #ifdef CONFIG_NET_POLL_CONTROLLER
74 struct netpoll *netpoll;
75 #endif
76 };
77
vlan_dev_priv(const struct net_device * dev)78 static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev)
79 {
80 return netdev_priv(dev);
81 }
82
83 /* if this changes, algorithm will have to be reworked because this
84 * depends on completely exhausting the VLAN identifier space. Thus
85 * it gives constant time look-up, but in many cases it wastes memory.
86 */
87 #define VLAN_GROUP_ARRAY_SPLIT_PARTS 8
88 #define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
89
90 struct vlan_group {
91 unsigned int nr_vlan_devs;
92 struct hlist_node hlist; /* linked list */
93 struct net_device **vlan_devices_arrays[VLAN_GROUP_ARRAY_SPLIT_PARTS];
94 };
95
96 struct vlan_info {
97 struct net_device *real_dev; /* The ethernet(like) device
98 * the vlan is attached to.
99 */
100 struct vlan_group grp;
101 struct list_head vid_list;
102 unsigned int nr_vids;
103 struct rcu_head rcu;
104 };
105
vlan_group_get_device(struct vlan_group * vg,u16 vlan_id)106 static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
107 u16 vlan_id)
108 {
109 struct net_device **array;
110 array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
111 return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
112 }
113
vlan_group_set_device(struct vlan_group * vg,u16 vlan_id,struct net_device * dev)114 static inline void vlan_group_set_device(struct vlan_group *vg,
115 u16 vlan_id,
116 struct net_device *dev)
117 {
118 struct net_device **array;
119 if (!vg)
120 return;
121 array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
122 array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
123 }
124
125 /* Must be invoked with rcu_read_lock or with RTNL. */
vlan_find_dev(struct net_device * real_dev,u16 vlan_id)126 static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
127 u16 vlan_id)
128 {
129 struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
130
131 if (vlan_info)
132 return vlan_group_get_device(&vlan_info->grp, vlan_id);
133
134 return NULL;
135 }
136
137 /* found in vlan_dev.c */
138 void vlan_dev_set_ingress_priority(const struct net_device *dev,
139 u32 skb_prio, u16 vlan_prio);
140 int vlan_dev_set_egress_priority(const struct net_device *dev,
141 u32 skb_prio, u16 vlan_prio);
142 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
143 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
144
145 int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id);
146 void vlan_setup(struct net_device *dev);
147 int register_vlan_dev(struct net_device *dev);
148 void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
149
vlan_get_ingress_priority(struct net_device * dev,u16 vlan_tci)150 static inline u32 vlan_get_ingress_priority(struct net_device *dev,
151 u16 vlan_tci)
152 {
153 struct vlan_dev_priv *vip = vlan_dev_priv(dev);
154
155 return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
156 }
157
158 #ifdef CONFIG_VLAN_8021Q_GVRP
159 extern int vlan_gvrp_request_join(const struct net_device *dev);
160 extern void vlan_gvrp_request_leave(const struct net_device *dev);
161 extern int vlan_gvrp_init_applicant(struct net_device *dev);
162 extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
163 extern int vlan_gvrp_init(void);
164 extern void vlan_gvrp_uninit(void);
165 #else
vlan_gvrp_request_join(const struct net_device * dev)166 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
vlan_gvrp_request_leave(const struct net_device * dev)167 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
vlan_gvrp_init_applicant(struct net_device * dev)168 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
vlan_gvrp_uninit_applicant(struct net_device * dev)169 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
vlan_gvrp_init(void)170 static inline int vlan_gvrp_init(void) { return 0; }
vlan_gvrp_uninit(void)171 static inline void vlan_gvrp_uninit(void) {}
172 #endif
173
174 extern const char vlan_fullname[];
175 extern const char vlan_version[];
176 extern int vlan_netlink_init(void);
177 extern void vlan_netlink_fini(void);
178
179 extern struct rtnl_link_ops vlan_link_ops;
180
181 extern int vlan_net_id;
182
183 struct proc_dir_entry;
184
185 struct vlan_net {
186 /* /proc/net/vlan */
187 struct proc_dir_entry *proc_vlan_dir;
188 /* /proc/net/vlan/config */
189 struct proc_dir_entry *proc_vlan_conf;
190 /* Determines interface naming scheme. */
191 unsigned short name_type;
192 };
193
194 #endif /* !(__BEN_VLAN_802_1Q_INC__) */
195