[GitHub/mt8127/android_kernel_alcatel_ttab.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_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];

	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)

struct vlan_group {
	unsigned int		nr_vlan_devs;
	struct hlist_node	hlist;	/* linked list */
	struct net_device **vlan_devices_arrays[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 struct net_device *vlan_group_get_device(struct vlan_group *vg,
						       u16 vlan_id)
{
	struct net_device **array;
	array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
	return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
}

static inline void vlan_group_set_device(struct vlan_group *vg,
					 u16 vlan_id,
					 struct net_device *dev)
{
	struct net_device **array;
	if (!vg)
		return;
	array = vg->vlan_devices_arrays[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,
					       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_id);

	return NULL;
}

/* 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, 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
	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	#ifdef CONFIG_VLAN_8021Q_MVRP
	175	extern int vlan_mvrp_request_join(const struct net_device *dev);
	176	extern void vlan_mvrp_request_leave(const struct net_device *dev);
	177	extern int vlan_mvrp_init_applicant(struct net_device *dev);
	178	extern void vlan_mvrp_uninit_applicant(struct net_device *dev);
	179	extern int vlan_mvrp_init(void);
	180	extern void vlan_mvrp_uninit(void);
	181	#else
	182	static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
	183	static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
	184	static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
	185	static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
	186	static inline int vlan_mvrp_init(void) { return 0; }
	187	static inline void vlan_mvrp_uninit(void) {}
	188	#endif
	189
	190	extern const char vlan_fullname[];
	191	extern const char vlan_version[];
	192	extern int vlan_netlink_init(void);
	193	extern void vlan_netlink_fini(void);
	194
	195	extern struct rtnl_link_ops vlan_link_ops;
	196
	197	extern int vlan_net_id;
	198
	199	struct proc_dir_entry;
	200
	201	struct vlan_net {
	202	/* /proc/net/vlan */
	203	struct proc_dir_entry *proc_vlan_dir;
	204	/* /proc/net/vlan/config */
	205	struct proc_dir_entry *proc_vlan_conf;
	206	/* Determines interface naming scheme. */
	207	unsigned short name_type;
	208	};
	209
	210	#endif /* !(__BEN_VLAN_802_1Q_INC__) */