diff options
Diffstat (limited to 'net/8021q/vlan.h')
| -rw-r--r-- | net/8021q/vlan.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h new file mode 100644 index 00000000..a4886d94 --- /dev/null +++ b/net/8021q/vlan.h @@ -0,0 +1,194 @@ +#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 + +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__) */ |