net/8021q/vlan.h

#ifndef __BEN_VLAN_802_1Q_INC__
#define __BEN_VLAN_802_1Q_INC__

#include <linux/if_vlan.h>

#define VLAN_GRP_HASH_SHIFT	5
#define VLAN_GRP_HASH_SIZE	(1 << VLAN_GRP_HASH_SHIFT)
#define VLAN_GRP_HASH_MASK	(VLAN_GRP_HASH_SIZE - 1)

/*  Find a VLAN device by the MAC address of its Ethernet device, and
 *  it's VLAN ID.  The default configuration is to have VLAN's scope
 *  to be box-wide, so the MAC will be ignored.  The mac will only be
 *  looked at if we are configured to have a separate set of VLANs per
 *  each MAC addressable interface.  Note that this latter option does
 *  NOT follow the spec for VLANs, but may be useful for doing very
 *  large quantities of VLAN MUX/DEMUX onto FrameRelay or ATM PVCs.
 *
 *  Must be invoked with rcu_read_lock (ie preempt disabled)
 *  or with RTNL.
 */
struct net_device *__find_vlan_dev(struct net_device *real_dev,
				   unsigned short VID); /* vlan.c */

/* found in vlan_dev.c */
int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
		  struct packet_type *ptype, struct net_device *orig_dev);
void vlan_dev_set_ingress_priority(const struct net_device *dev,
				   u32 skb_prio, short vlan_prio);
int vlan_dev_set_egress_priority(const struct net_device *dev,
				 u32 skb_prio, short 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);
void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result);

int vlan_check_real_dev(struct net_device *real_dev, unsigned short 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);

static inline u32 vlan_get_ingress_priority(struct net_device *dev,
					    unsigned short vlan_tag)
{
	struct vlan_dev_info *vip = vlan_dev_info(dev);

	return vip->ingress_priority_map[(vlan_tag >> 13) & 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

int vlan_netlink_init(void);
void vlan_netlink_fini(void);

extern struct rtnl_link_ops vlan_link_ops;

static inline int is_vlan_dev(struct net_device *dev)
{
	return dev->priv_flags & IFF_802_1Q_VLAN;
}

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__) */