[deliverable/linux.git] / net / 8021q / vlan.h

#ifndef __BEN_VLAN_802_1Q_INC__
#define __BEN_VLAN_802_1Q_INC__

#include <linux/if_vlan.h>
#include <linux/u64_stats_sync.h>
#include <linux/list.h>


/**
 *	struct vlan_priority_tci_mapping - vlan egress priority mappings
 *	@priority: skb priority
 *	@vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
 *	@next: pointer to next struct
 */
struct vlan_priority_tci_mapping {
	u32					priority;
	u16					vlan_qos;
	struct vlan_priority_tci_mapping	*next;
};


/**
 *	struct vlan_pcpu_stats - VLAN percpu rx/tx stats
 *	@rx_packets: number of received packets
 *	@rx_bytes: number of received bytes
 *	@rx_multicast: number of received multicast packets
 *	@tx_packets: number of transmitted packets
 *	@tx_bytes: number of transmitted bytes
 *	@syncp: synchronization point for 64bit counters
 *	@rx_errors: number of rx errors
 *	@tx_dropped: number of tx drops
 */
struct vlan_pcpu_stats {
	u64			rx_packets;
	u64			rx_bytes;
	u64			rx_multicast;
	u64			tx_packets;
	u64			tx_bytes;
	struct u64_stats_sync	syncp;
	u32			rx_errors;
	u32			tx_dropped;
};

struct netpoll;

/**
 *	struct vlan_dev_priv - VLAN private device data
 *	@nr_ingress_mappings: number of ingress priority mappings
 *	@ingress_priority_map: ingress priority mappings
 *	@nr_egress_mappings: number of egress priority mappings
 *	@egress_priority_map: hash of egress priority mappings
 *	@vlan_proto: VLAN encapsulation protocol
 *	@vlan_id: VLAN identifier
 *	@flags: device flags
 *	@real_dev: underlying netdevice
 *	@real_dev_addr: address of underlying netdevice
 *	@dent: proc dir entry
 *	@vlan_pcpu_stats: ptr to percpu rx stats
 */
struct vlan_dev_priv {
	unsigned int				nr_ingress_mappings;
	u32					ingress_priority_map[8];
	unsigned int				nr_egress_mappings;
	struct vlan_priority_tci_mapping	*egress_priority_map[16];

	__be16					vlan_proto;
	u16					vlan_id;
	u16					flags;

	struct net_device			*real_dev;
	unsigned char				real_dev_addr[ETH_ALEN];

	struct proc_dir_entry			*dent;
	struct vlan_pcpu_stats __percpu		*vlan_pcpu_stats;
#ifdef CONFIG_NET_POLL_CONTROLLER
	struct netpoll				*netpoll;
#endif
};

static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev)
{
	return netdev_priv(dev);
}

/* if this changes, algorithm will have to be reworked because this
 * depends on completely exhausting the VLAN identifier space.  Thus
 * it gives constant time look-up, but in many cases it wastes memory.
 */
#define VLAN_GROUP_ARRAY_SPLIT_PARTS  8
#define VLAN_GROUP_ARRAY_PART_LEN     (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)

enum vlan_protos {
	VLAN_PROTO_8021Q	= 0,
	VLAN_PROTO_NUM,
};

struct vlan_group {
	unsigned int		nr_vlan_devs;
	struct hlist_node	hlist;	/* linked list */
	struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
					       [VLAN_GROUP_ARRAY_SPLIT_PARTS];
};

struct vlan_info {
	struct net_device	*real_dev; /* The ethernet(like) device
					    * the vlan is attached to.
					    */
	struct vlan_group	grp;
	struct list_head	vid_list;
	unsigned int		nr_vids;
	struct rcu_head		rcu;
};

static inline unsigned int vlan_proto_idx(__be16 proto)
{
	switch (proto) {
	case __constant_htons(ETH_P_8021Q):
		return VLAN_PROTO_8021Q;
	default:
		BUG();
	}
}

static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
							 unsigned int pidx,
							 u16 vlan_id)
{
	struct net_device **array;

	array = vg->vlan_devices_arrays[pidx]
				       [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
	return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
}

static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
						       __be16 vlan_proto,
						       u16 vlan_id)
{
	return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id);
}

static inline void vlan_group_set_device(struct vlan_group *vg,
					 __be16 vlan_proto, u16 vlan_id,
					 struct net_device *dev)
{
	struct net_device **array;
	if (!vg)
		return;
	array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)]
				       [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
	array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
}

/* Must be invoked with rcu_read_lock or with RTNL. */
static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
					       __be16 vlan_proto, u16 vlan_id)
{
	struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);

	if (vlan_info)
		return vlan_group_get_device(&vlan_info->grp,
					     vlan_proto, vlan_id);

	return NULL;
}

#define vlan_group_for_each_dev(grp, i, dev) \
	for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
		if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
							    (i) % VLAN_N_VID)))

/* found in vlan_dev.c */
void vlan_dev_set_ingress_priority(const struct net_device *dev,
				   u32 skb_prio, u16 vlan_prio);
int vlan_dev_set_egress_priority(const struct net_device *dev,
				 u32 skb_prio, u16 vlan_prio);
int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);

int vlan_check_real_dev(struct net_device *real_dev,
			__be16 protocol, u16 vlan_id);
void vlan_setup(struct net_device *dev);
int register_vlan_dev(struct net_device *dev);
void unregister_vlan_dev(struct net_device *dev, struct list_head *head);

static inline u32 vlan_get_ingress_priority(struct net_device *dev,
					    u16 vlan_tci)
{
	struct vlan_dev_priv *vip = vlan_dev_priv(dev);

	return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
}

#ifdef CONFIG_VLAN_8021Q_GVRP
extern int vlan_gvrp_request_join(const struct net_device *dev);
extern void vlan_gvrp_request_leave(const struct net_device *dev);
extern int vlan_gvrp_init_applicant(struct net_device *dev);
extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
extern int vlan_gvrp_init(void);
extern void vlan_gvrp_uninit(void);
#else
static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
static inline int vlan_gvrp_init(void) { return 0; }
static inline void vlan_gvrp_uninit(void) {}
#endif

#ifdef CONFIG_VLAN_8021Q_MVRP
extern int vlan_mvrp_request_join(const struct net_device *dev);
extern void vlan_mvrp_request_leave(const struct net_device *dev);
extern int vlan_mvrp_init_applicant(struct net_device *dev);
extern void vlan_mvrp_uninit_applicant(struct net_device *dev);
extern int vlan_mvrp_init(void);
extern void vlan_mvrp_uninit(void);
#else
static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
static inline int vlan_mvrp_init(void) { return 0; }
static inline void vlan_mvrp_uninit(void) {}
#endif

extern const char vlan_fullname[];
extern const char vlan_version[];
extern int vlan_netlink_init(void);
extern void vlan_netlink_fini(void);

extern struct rtnl_link_ops vlan_link_ops;

extern int vlan_net_id;

struct proc_dir_entry;

struct vlan_net {
	/* /proc/net/vlan */
	struct proc_dir_entry *proc_vlan_dir;
	/* /proc/net/vlan/config */
	struct proc_dir_entry *proc_vlan_conf;
	/* Determines interface naming scheme. */
	unsigned short name_type;
};

#endif /* !(__BEN_VLAN_802_1Q_INC__) */
Commit	Line	Data
1da177e4 LT	1	#ifndef __BEN_VLAN_802_1Q_INC__
	2	#define __BEN_VLAN_802_1Q_INC__
	3
	4	#include <linux/if_vlan.h>
9618e2ff	5	#include <linux/u64_stats_sync.h>
5b9ea6e0	6	#include <linux/list.h>
1da177e4	7
22d1ba74 PM	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;
9bb8582e	17	u16 vlan_qos;
22d1ba74 PM	18	struct vlan_priority_tci_mapping *next;
	19	};
	20
9793241f ED	21
9793241f ED	22	/**
4af429d2	23	* struct vlan_pcpu_stats - VLAN percpu rx/tx stats
9793241f ED	24	* @rx_packets: number of received packets
9793241f ED	25	* @rx_bytes: number of received bytes
9618e2ff	26	* @rx_multicast: number of received multicast packets
4af429d2 ED	27	* @tx_packets: number of transmitted packets
4af429d2 ED	28	* @tx_bytes: number of transmitted bytes
9618e2ff	29	* @syncp: synchronization point for 64bit counters
4af429d2 ED	30	* @rx_errors: number of rx errors
4af429d2 ED	31	* @tx_dropped: number of tx drops
9793241f	32	*/
4af429d2	33	struct vlan_pcpu_stats {
9618e2ff ED	34	u64 rx_packets;
	35	u64 rx_bytes;
	36	u64 rx_multicast;
4af429d2 ED	37	u64 tx_packets;
4af429d2 ED	38	u64 tx_bytes;
9618e2ff	39	struct u64_stats_sync syncp;
4af429d2 ED	40	u32 rx_errors;
4af429d2 ED	41	u32 tx_dropped;
9793241f ED	42	};
9793241f ED	43
6d4cdf47 BL	44	struct netpoll;
6d4cdf47 BL	45
22d1ba74	46	/**
7da82c06	47	* struct vlan_dev_priv - VLAN private device data
22d1ba74 PM	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
1fd9b1fc	52	* @vlan_proto: VLAN encapsulation protocol
22d1ba74 PM	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
4af429d2	58	* @vlan_pcpu_stats: ptr to percpu rx stats
22d1ba74	59	*/
7da82c06	60	struct vlan_dev_priv {
22d1ba74 PM	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
1fd9b1fc	66	__be16 vlan_proto;
9bb8582e PM	67	u16 vlan_id;
9bb8582e PM	68	u16 flags;
22d1ba74 PM	69
	70	struct net_device *real_dev;
	71	unsigned char real_dev_addr[ETH_ALEN];
	72
	73	struct proc_dir_entry *dent;
4af429d2	74	struct vlan_pcpu_stats __percpu *vlan_pcpu_stats;
6d4cdf47 BL	75	#ifdef CONFIG_NET_POLL_CONTROLLER
	76	struct netpoll *netpoll;
	77	#endif
22d1ba74 PM	78	};
22d1ba74 PM	79
7da82c06	80	static inline struct vlan_dev_priv vlan_dev_priv(const struct net_device dev)
22d1ba74 PM	81	{
	82	return netdev_priv(dev);
	83	}
	84
5b9ea6e0 JP	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
1fd9b1fc PM	92	enum vlan_protos {
	93	VLAN_PROTO_8021Q = 0,
	94	VLAN_PROTO_NUM,
	95	};
	96
5b9ea6e0 JP	97	struct vlan_group {
	98	unsigned int nr_vlan_devs;
	99	struct hlist_node hlist; /* linked list */
1fd9b1fc PM	100	struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
1fd9b1fc PM	101	[VLAN_GROUP_ARRAY_SPLIT_PARTS];
5b9ea6e0 JP	102	};
	103
	104	struct vlan_info {
	105	struct net_device real_dev; / The ethernet(like) device
	106	* the vlan is attached to.
	107	*/
	108	struct vlan_group grp;
	109	struct list_head vid_list;
	110	unsigned int nr_vids;
	111	struct rcu_head rcu;
	112	};
	113
1fd9b1fc PM	114	static inline unsigned int vlan_proto_idx(__be16 proto)
	115	{
	116	switch (proto) {
	117	case __constant_htons(ETH_P_8021Q):
	118	return VLAN_PROTO_8021Q;
	119	default:
	120	BUG();
	121	}
	122	}
	123
	124	static inline struct net_device __vlan_group_get_device(struct vlan_group vg,
	125	unsigned int pidx,
	126	u16 vlan_id)
536d1d4a JP	127	{
536d1d4a JP	128	struct net_device **array;
1fd9b1fc PM	129
	130	array = vg->vlan_devices_arrays[pidx]
	131	[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
536d1d4a JP	132	return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
	133	}
	134
1fd9b1fc PM	135	static inline struct net_device vlan_group_get_device(struct vlan_group vg,
	136	__be16 vlan_proto,
	137	u16 vlan_id)
	138	{
	139	return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id);
	140	}
	141
536d1d4a	142	static inline void vlan_group_set_device(struct vlan_group *vg,
1fd9b1fc	143	__be16 vlan_proto, u16 vlan_id,
536d1d4a JP	144	struct net_device *dev)
	145	{
	146	struct net_device **array;
	147	if (!vg)
	148	return;
1fd9b1fc PM	149	array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)]
1fd9b1fc PM	150	[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
536d1d4a JP	151	array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
	152	}
	153
69ecca86 DL	154	/* Must be invoked with rcu_read_lock or with RTNL. */
69ecca86 DL	155	static inline struct net_device vlan_find_dev(struct net_device real_dev,
1fd9b1fc	156	__be16 vlan_proto, u16 vlan_id)
69ecca86	157	{
5b9ea6e0	158	struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
69ecca86	159
5b9ea6e0	160	if (vlan_info)
1fd9b1fc PM	161	return vlan_group_get_device(&vlan_info->grp,
1fd9b1fc PM	162	vlan_proto, vlan_id);
69ecca86 DL	163
	164	return NULL;
	165	}
	166
1fd9b1fc PM	167	#define vlan_group_for_each_dev(grp, i, dev) \
	168	for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
	169	if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
	170	(i) % VLAN_N_VID)))
	171
1da177e4	172	/* found in vlan_dev.c */
c17d8874	173	void vlan_dev_set_ingress_priority(const struct net_device *dev,
9bb8582e	174	u32 skb_prio, u16 vlan_prio);
c17d8874	175	int vlan_dev_set_egress_priority(const struct net_device *dev,
9bb8582e	176	u32 skb_prio, u16 vlan_prio);
b3ce0325	177	int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
c17d8874	178	void vlan_dev_get_realdev_name(const struct net_device dev, char result);
1da177e4	179
1fd9b1fc PM	180	int vlan_check_real_dev(struct net_device *real_dev,
1fd9b1fc PM	181	__be16 protocol, u16 vlan_id);
07b5b17e PM	182	void vlan_setup(struct net_device *dev);
07b5b17e PM	183	int register_vlan_dev(struct net_device *dev);
23289a37	184	void unregister_vlan_dev(struct net_device dev, struct list_head head);
07b5b17e	185
7750f403	186	static inline u32 vlan_get_ingress_priority(struct net_device *dev,
9bb8582e	187	u16 vlan_tci)
7750f403	188	{
7da82c06	189	struct vlan_dev_priv *vip = vlan_dev_priv(dev);
7750f403	190
05423b24	191	return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
7750f403 PM	192	}
7750f403 PM	193
70c03b49 PM	194	#ifdef CONFIG_VLAN_8021Q_GVRP
	195	extern int vlan_gvrp_request_join(const struct net_device *dev);
	196	extern void vlan_gvrp_request_leave(const struct net_device *dev);
	197	extern int vlan_gvrp_init_applicant(struct net_device *dev);
	198	extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
	199	extern int vlan_gvrp_init(void);
	200	extern void vlan_gvrp_uninit(void);
	201	#else
	202	static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
	203	static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
	204	static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
	205	static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
	206	static inline int vlan_gvrp_init(void) { return 0; }
	207	static inline void vlan_gvrp_uninit(void) {}
	208	#endif
	209
86fbe9bb DW	210	#ifdef CONFIG_VLAN_8021Q_MVRP
	211	extern int vlan_mvrp_request_join(const struct net_device *dev);
	212	extern void vlan_mvrp_request_leave(const struct net_device *dev);
	213	extern int vlan_mvrp_init_applicant(struct net_device *dev);
	214	extern void vlan_mvrp_uninit_applicant(struct net_device *dev);
	215	extern int vlan_mvrp_init(void);
	216	extern void vlan_mvrp_uninit(void);
	217	#else
	218	static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
	219	static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
	220	static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
	221	static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
	222	static inline int vlan_mvrp_init(void) { return 0; }
	223	static inline void vlan_mvrp_uninit(void) {}
	224	#endif
	225
b3020061 SH	226	extern const char vlan_fullname[];
	227	extern const char vlan_version[];
	228	extern int vlan_netlink_init(void);
	229	extern void vlan_netlink_fini(void);
07b5b17e PM	230
	231	extern struct rtnl_link_ops vlan_link_ops;
	232
d9ed0f0e PE	233	extern int vlan_net_id;
d9ed0f0e PE	234
a59a8c1c PE	235	struct proc_dir_entry;
a59a8c1c PE	236
d9ed0f0e	237	struct vlan_net {
a59a8c1c PE	238	/* /proc/net/vlan */
	239	struct proc_dir_entry *proc_vlan_dir;
	240	/* /proc/net/vlan/config */
	241	struct proc_dir_entry *proc_vlan_conf;
7a17a2f7 PE	242	/* Determines interface naming scheme. */
7a17a2f7 PE	243	unsigned short name_type;
d9ed0f0e PE	244	};
d9ed0f0e PE	245
1da177e4	246	#endif /* !(__BEN_VLAN_802_1Q_INC__) */