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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __BEN_VLAN_802_1Q_INC__
2#define __BEN_VLAN_802_1Q_INC__
3
4#include <linux/if_vlan.h>
Eric Dumazet9618e2f2010-06-24 00:55:06 +00005#include <linux/u64_stats_sync.h>
Jiri Pirko5b9ea6e2011-12-08 04:11:18 +00006#include <linux/list.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07007
Patrick McHardy22d1ba72008-07-08 03:23:57 -07008
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 */
15struct vlan_priority_tci_mapping {
16 u32 priority;
Patrick McHardy9bb85822008-07-08 03:24:44 -070017 u16 vlan_qos;
Patrick McHardy22d1ba72008-07-08 03:23:57 -070018 struct vlan_priority_tci_mapping *next;
19};
20
Eric Dumazet97932412009-11-17 04:53:09 +000021
22/**
Eric Dumazet4af429d2010-11-10 23:42:00 +000023 * struct vlan_pcpu_stats - VLAN percpu rx/tx stats
Eric Dumazet97932412009-11-17 04:53:09 +000024 * @rx_packets: number of received packets
25 * @rx_bytes: number of received bytes
Eric Dumazet9618e2f2010-06-24 00:55:06 +000026 * @rx_multicast: number of received multicast packets
Eric Dumazet4af429d2010-11-10 23:42:00 +000027 * @tx_packets: number of transmitted packets
28 * @tx_bytes: number of transmitted bytes
Eric Dumazet9618e2f2010-06-24 00:55:06 +000029 * @syncp: synchronization point for 64bit counters
Eric Dumazet4af429d2010-11-10 23:42:00 +000030 * @rx_errors: number of rx errors
31 * @tx_dropped: number of tx drops
Eric Dumazet97932412009-11-17 04:53:09 +000032 */
Eric Dumazet4af429d2010-11-10 23:42:00 +000033struct vlan_pcpu_stats {
Eric Dumazet9618e2f2010-06-24 00:55:06 +000034 u64 rx_packets;
35 u64 rx_bytes;
36 u64 rx_multicast;
Eric Dumazet4af429d2010-11-10 23:42:00 +000037 u64 tx_packets;
38 u64 tx_bytes;
Eric Dumazet9618e2f2010-06-24 00:55:06 +000039 struct u64_stats_sync syncp;
Eric Dumazet4af429d2010-11-10 23:42:00 +000040 u32 rx_errors;
41 u32 tx_dropped;
Eric Dumazet97932412009-11-17 04:53:09 +000042};
43
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +000044struct netpoll;
45
Patrick McHardy22d1ba72008-07-08 03:23:57 -070046/**
Jiri Pirko7da82c02011-12-08 04:11:15 +000047 * struct vlan_dev_priv - VLAN private device data
Patrick McHardy22d1ba72008-07-08 03:23:57 -070048 * @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
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000052 * @vlan_proto: VLAN encapsulation protocol
Patrick McHardy22d1ba72008-07-08 03:23:57 -070053 * @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
Eric Dumazet4af429d2010-11-10 23:42:00 +000058 * @vlan_pcpu_stats: ptr to percpu rx stats
Patrick McHardy22d1ba72008-07-08 03:23:57 -070059 */
Jiri Pirko7da82c02011-12-08 04:11:15 +000060struct vlan_dev_priv {
Patrick McHardy22d1ba72008-07-08 03:23:57 -070061 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
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000066 __be16 vlan_proto;
Patrick McHardy9bb85822008-07-08 03:24:44 -070067 u16 vlan_id;
68 u16 flags;
Patrick McHardy22d1ba72008-07-08 03:23:57 -070069
70 struct net_device *real_dev;
71 unsigned char real_dev_addr[ETH_ALEN];
72
73 struct proc_dir_entry *dent;
Eric Dumazet4af429d2010-11-10 23:42:00 +000074 struct vlan_pcpu_stats __percpu *vlan_pcpu_stats;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +000075#ifdef CONFIG_NET_POLL_CONTROLLER
76 struct netpoll *netpoll;
77#endif
Patrick McHardy22d1ba72008-07-08 03:23:57 -070078};
79
Jiri Pirko7da82c02011-12-08 04:11:15 +000080static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev)
Patrick McHardy22d1ba72008-07-08 03:23:57 -070081{
82 return netdev_priv(dev);
83}
84
Jiri Pirko5b9ea6e2011-12-08 04:11:18 +000085/* 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
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000092enum vlan_protos {
93 VLAN_PROTO_8021Q = 0,
Patrick McHardy8ad227f2013-04-19 02:04:31 +000094 VLAN_PROTO_8021AD,
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000095 VLAN_PROTO_NUM,
96};
97
Jiri Pirko5b9ea6e2011-12-08 04:11:18 +000098struct vlan_group {
99 unsigned int nr_vlan_devs;
100 struct hlist_node hlist; /* linked list */
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000101 struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
102 [VLAN_GROUP_ARRAY_SPLIT_PARTS];
Jiri Pirko5b9ea6e2011-12-08 04:11:18 +0000103};
104
105struct 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
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000115static inline unsigned int vlan_proto_idx(__be16 proto)
116{
117 switch (proto) {
118 case __constant_htons(ETH_P_8021Q):
119 return VLAN_PROTO_8021Q;
Patrick McHardy8ad227f2013-04-19 02:04:31 +0000120 case __constant_htons(ETH_P_8021AD):
121 return VLAN_PROTO_8021AD;
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000122 default:
123 BUG();
Patrick McHardy8da63a62013-04-21 00:09:32 +0000124 return 0;
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000125 }
126}
127
128static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
129 unsigned int pidx,
130 u16 vlan_id)
Jiri Pirko536d1d42011-07-20 04:54:49 +0000131{
132 struct net_device **array;
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000133
134 array = vg->vlan_devices_arrays[pidx]
135 [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
Jiri Pirko536d1d42011-07-20 04:54:49 +0000136 return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
137}
138
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000139static 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
Jiri Pirko536d1d42011-07-20 04:54:49 +0000146static inline void vlan_group_set_device(struct vlan_group *vg,
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000147 __be16 vlan_proto, u16 vlan_id,
Jiri Pirko536d1d42011-07-20 04:54:49 +0000148 struct net_device *dev)
149{
150 struct net_device **array;
151 if (!vg)
152 return;
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000153 array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)]
154 [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
Jiri Pirko536d1d42011-07-20 04:54:49 +0000155 array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
156}
157
David Lamparter69ecca82011-07-17 08:53:12 +0000158/* Must be invoked with rcu_read_lock or with RTNL. */
159static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000160 __be16 vlan_proto, u16 vlan_id)
David Lamparter69ecca82011-07-17 08:53:12 +0000161{
Jiri Pirko5b9ea6e2011-12-08 04:11:18 +0000162 struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
David Lamparter69ecca82011-07-17 08:53:12 +0000163
Jiri Pirko5b9ea6e2011-12-08 04:11:18 +0000164 if (vlan_info)
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000165 return vlan_group_get_device(&vlan_info->grp,
166 vlan_proto, vlan_id);
David Lamparter69ecca82011-07-17 08:53:12 +0000167
168 return NULL;
169}
170
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000171#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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176/* found in vlan_dev.c */
Patrick McHardyc17d8872007-06-13 12:05:22 -0700177void vlan_dev_set_ingress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700178 u32 skb_prio, u16 vlan_prio);
Patrick McHardyc17d8872007-06-13 12:05:22 -0700179int vlan_dev_set_egress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700180 u32 skb_prio, u16 vlan_prio);
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700181int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
Patrick McHardyc17d8872007-06-13 12:05:22 -0700182void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000184int vlan_check_real_dev(struct net_device *real_dev,
185 __be16 protocol, u16 vlan_id);
Patrick McHardy07b5b172007-06-13 12:07:54 -0700186void vlan_setup(struct net_device *dev);
187int register_vlan_dev(struct net_device *dev);
Eric Dumazet23289a32009-10-27 07:06:36 +0000188void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
Patrick McHardy07b5b172007-06-13 12:07:54 -0700189
Patrick McHardy7750f402008-07-08 03:23:36 -0700190static inline u32 vlan_get_ingress_priority(struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700191 u16 vlan_tci)
Patrick McHardy7750f402008-07-08 03:23:36 -0700192{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000193 struct vlan_dev_priv *vip = vlan_dev_priv(dev);
Patrick McHardy7750f402008-07-08 03:23:36 -0700194
Eric Dumazet05423b22009-10-26 18:40:35 -0700195 return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
Patrick McHardy7750f402008-07-08 03:23:36 -0700196}
197
Patrick McHardy70c03b42008-07-05 21:26:57 -0700198#ifdef CONFIG_VLAN_8021Q_GVRP
199extern int vlan_gvrp_request_join(const struct net_device *dev);
200extern void vlan_gvrp_request_leave(const struct net_device *dev);
201extern int vlan_gvrp_init_applicant(struct net_device *dev);
202extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
203extern int vlan_gvrp_init(void);
204extern void vlan_gvrp_uninit(void);
205#else
206static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
207static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
208static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
209static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
210static inline int vlan_gvrp_init(void) { return 0; }
211static inline void vlan_gvrp_uninit(void) {}
212#endif
213
David Ward86fbe9b2013-02-08 17:17:07 +0000214#ifdef CONFIG_VLAN_8021Q_MVRP
215extern int vlan_mvrp_request_join(const struct net_device *dev);
216extern void vlan_mvrp_request_leave(const struct net_device *dev);
217extern int vlan_mvrp_init_applicant(struct net_device *dev);
218extern void vlan_mvrp_uninit_applicant(struct net_device *dev);
219extern int vlan_mvrp_init(void);
220extern void vlan_mvrp_uninit(void);
221#else
222static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
223static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
224static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
225static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
226static inline int vlan_mvrp_init(void) { return 0; }
227static inline void vlan_mvrp_uninit(void) {}
228#endif
229
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700230extern const char vlan_fullname[];
231extern const char vlan_version[];
232extern int vlan_netlink_init(void);
233extern void vlan_netlink_fini(void);
Patrick McHardy07b5b172007-06-13 12:07:54 -0700234
235extern struct rtnl_link_ops vlan_link_ops;
236
Pavel Emelyanovd9ed0f02008-04-16 00:49:09 -0700237extern int vlan_net_id;
238
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700239struct proc_dir_entry;
240
Pavel Emelyanovd9ed0f02008-04-16 00:49:09 -0700241struct vlan_net {
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700242 /* /proc/net/vlan */
243 struct proc_dir_entry *proc_vlan_dir;
244 /* /proc/net/vlan/config */
245 struct proc_dir_entry *proc_vlan_conf;
Pavel Emelyanov7a17a2f2008-04-16 00:54:39 -0700246 /* Determines interface naming scheme. */
247 unsigned short name_type;
Pavel Emelyanovd9ed0f02008-04-16 00:49:09 -0700248};
249
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250#endif /* !(__BEN_VLAN_802_1Q_INC__) */