net: wireless: sd8797: change wlan interface to wlan0
[linux-2.6.git] / net / 8021q / vlan.h
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
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
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
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. */
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
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
166 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
167 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
168 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
169 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
170 static inline int vlan_gvrp_init(void) { return 0; }
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__) */