root/net/8021q/vlan.h

INCLUDED FROM

DEFINITIONS

1. vlan_get_ingress_priority
2. vlan_gvrp_request_join
3. vlan_gvrp_request_leave
4. vlan_gvrp_init_applicant
5. vlan_gvrp_uninit_applicant
6. vlan_gvrp_init
7. vlan_gvrp_uninit
8. is_vlan_dev

#ifndef __BEN_VLAN_802_1Q_INC__
#define __BEN_VLAN_802_1Q_INC__

#include <linux/if_vlan.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_dev_info - 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
 *      @cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX
 *      @cnt_encap_on_xmit: statistic - number of skb encapsulations on TX
 */
struct vlan_dev_info {
        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;
        unsigned long                           cnt_inc_headroom_on_tx;
        unsigned long                           cnt_encap_on_xmit;
};

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

#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, u16 vlan_id);

/* 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, 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);

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

        return vip->ingress_priority_map[(vlan_tci >> 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__) */