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
7
8/**
9 *	struct vlan_priority_tci_mapping - vlan egress priority mappings
10 *	@priority: skb priority
11 *	@vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
12 *	@next: pointer to next struct
13 */
14struct vlan_priority_tci_mapping {
15	u32					priority;
16	u16					vlan_qos;
17	struct vlan_priority_tci_mapping	*next;
18};
19
20
21/**
22 *	struct vlan_rx_stats - VLAN percpu rx stats
23 *	@rx_packets: number of received packets
24 *	@rx_bytes: number of received bytes
25 *	@rx_multicast: number of received multicast packets
26 *	@syncp: synchronization point for 64bit counters
27 *	@rx_errors: number of errors
28 */
29struct vlan_rx_stats {
30	u64			rx_packets;
31	u64			rx_bytes;
32	u64			rx_multicast;
33	struct u64_stats_sync	syncp;
34	unsigned long		rx_errors;
35};
36
37/**
38 *	struct vlan_dev_info - VLAN private device data
39 *	@nr_ingress_mappings: number of ingress priority mappings
40 *	@ingress_priority_map: ingress priority mappings
41 *	@nr_egress_mappings: number of egress priority mappings
42 *	@egress_priority_map: hash of egress priority mappings
43 *	@vlan_id: VLAN identifier
44 *	@flags: device flags
45 *	@real_dev: underlying netdevice
46 *	@real_dev_addr: address of underlying netdevice
47 *	@dent: proc dir entry
48 *	@cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX
49 *	@cnt_encap_on_xmit: statistic - number of skb encapsulations on TX
50 *	@vlan_rx_stats: ptr to percpu rx stats
51 */
52struct vlan_dev_info {
53	unsigned int				nr_ingress_mappings;
54	u32					ingress_priority_map[8];
55	unsigned int				nr_egress_mappings;
56	struct vlan_priority_tci_mapping	*egress_priority_map[16];
57
58	u16					vlan_id;
59	u16					flags;
60
61	struct net_device			*real_dev;
62	unsigned char				real_dev_addr[ETH_ALEN];
63
64	struct proc_dir_entry			*dent;
65	unsigned long				cnt_inc_headroom_on_tx;
66	unsigned long				cnt_encap_on_xmit;
67	struct vlan_rx_stats __percpu		*vlan_rx_stats;
68};
69
70static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
71{
72	return netdev_priv(dev);
73}
74
75#define VLAN_GRP_HASH_SHIFT	5
76#define VLAN_GRP_HASH_SIZE	(1 << VLAN_GRP_HASH_SHIFT)
77#define VLAN_GRP_HASH_MASK	(VLAN_GRP_HASH_SIZE - 1)
78
79/*  Find a VLAN device by the MAC address of its Ethernet device, and
80 *  it's VLAN ID.  The default configuration is to have VLAN's scope
81 *  to be box-wide, so the MAC will be ignored.  The mac will only be
82 *  looked at if we are configured to have a separate set of VLANs per
83 *  each MAC addressable interface.  Note that this latter option does
84 *  NOT follow the spec for VLANs, but may be useful for doing very
85 *  large quantities of VLAN MUX/DEMUX onto FrameRelay or ATM PVCs.
86 *
87 *  Must be invoked with rcu_read_lock (ie preempt disabled)
88 *  or with RTNL.
89 */
90struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id);
91
92/* found in vlan_dev.c */
93int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
94		  struct packet_type *ptype, struct net_device *orig_dev);
95void vlan_dev_set_ingress_priority(const struct net_device *dev,
96				   u32 skb_prio, u16 vlan_prio);
97int vlan_dev_set_egress_priority(const struct net_device *dev,
98				 u32 skb_prio, u16 vlan_prio);
99int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
100void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
101
102int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id);
103void vlan_setup(struct net_device *dev);
104int register_vlan_dev(struct net_device *dev);
105void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
106
107static inline u32 vlan_get_ingress_priority(struct net_device *dev,
108					    u16 vlan_tci)
109{
110	struct vlan_dev_info *vip = vlan_dev_info(dev);
111
112	return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
113}
114
115#ifdef CONFIG_VLAN_8021Q_GVRP
116extern int vlan_gvrp_request_join(const struct net_device *dev);
117extern void vlan_gvrp_request_leave(const struct net_device *dev);
118extern int vlan_gvrp_init_applicant(struct net_device *dev);
119extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
120extern int vlan_gvrp_init(void);
121extern void vlan_gvrp_uninit(void);
122#else
123static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
124static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
125static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
126static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
127static inline int vlan_gvrp_init(void) { return 0; }
128static inline void vlan_gvrp_uninit(void) {}
129#endif
130
131extern const char vlan_fullname[];
132extern const char vlan_version[];
133extern int vlan_netlink_init(void);
134extern void vlan_netlink_fini(void);
135
136extern struct rtnl_link_ops vlan_link_ops;
137
138static inline int is_vlan_dev(struct net_device *dev)
139{
140	return dev->priv_flags & IFF_802_1Q_VLAN;
141}
142
143extern int vlan_net_id;
144
145struct proc_dir_entry;
146
147struct vlan_net {
148	/* /proc/net/vlan */
149	struct proc_dir_entry *proc_vlan_dir;
150	/* /proc/net/vlan/config */
151	struct proc_dir_entry *proc_vlan_conf;
152	/* Determines interface naming scheme. */
153	unsigned short name_type;
154};
155
156#endif /* !(__BEN_VLAN_802_1Q_INC__) */
157