157 lines
5.1 KiB
C
157 lines
5.1 KiB
C
#ifndef __BEN_VLAN_802_1Q_INC__
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#define __BEN_VLAN_802_1Q_INC__
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#include <linux/if_vlan.h>
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#include <linux/u64_stats_sync.h>
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/**
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* struct vlan_priority_tci_mapping - vlan egress priority mappings
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* @priority: skb priority
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* @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
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* @next: pointer to next struct
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*/
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struct vlan_priority_tci_mapping {
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u32 priority;
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u16 vlan_qos;
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struct vlan_priority_tci_mapping *next;
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};
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/**
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* struct vlan_rx_stats - VLAN percpu rx stats
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* @rx_packets: number of received packets
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* @rx_bytes: number of received bytes
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* @rx_multicast: number of received multicast packets
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* @syncp: synchronization point for 64bit counters
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* @rx_errors: number of errors
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*/
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struct vlan_rx_stats {
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u64 rx_packets;
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u64 rx_bytes;
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u64 rx_multicast;
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struct u64_stats_sync syncp;
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unsigned long rx_errors;
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};
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/**
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* struct vlan_dev_info - VLAN private device data
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* @nr_ingress_mappings: number of ingress priority mappings
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* @ingress_priority_map: ingress priority mappings
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* @nr_egress_mappings: number of egress priority mappings
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* @egress_priority_map: hash of egress priority mappings
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* @vlan_id: VLAN identifier
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* @flags: device flags
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* @real_dev: underlying netdevice
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* @real_dev_addr: address of underlying netdevice
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* @dent: proc dir entry
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* @cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX
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* @cnt_encap_on_xmit: statistic - number of skb encapsulations on TX
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* @vlan_rx_stats: ptr to percpu rx stats
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*/
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struct vlan_dev_info {
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unsigned int nr_ingress_mappings;
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u32 ingress_priority_map[8];
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unsigned int nr_egress_mappings;
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struct vlan_priority_tci_mapping *egress_priority_map[16];
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u16 vlan_id;
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u16 flags;
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struct net_device *real_dev;
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unsigned char real_dev_addr[ETH_ALEN];
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struct proc_dir_entry *dent;
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unsigned long cnt_inc_headroom_on_tx;
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unsigned long cnt_encap_on_xmit;
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struct vlan_rx_stats __percpu *vlan_rx_stats;
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};
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static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
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{
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return netdev_priv(dev);
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}
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#define VLAN_GRP_HASH_SHIFT 5
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#define VLAN_GRP_HASH_SIZE (1 << VLAN_GRP_HASH_SHIFT)
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#define VLAN_GRP_HASH_MASK (VLAN_GRP_HASH_SIZE - 1)
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/* Find a VLAN device by the MAC address of its Ethernet device, and
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* it's VLAN ID. The default configuration is to have VLAN's scope
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* to be box-wide, so the MAC will be ignored. The mac will only be
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* looked at if we are configured to have a separate set of VLANs per
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* each MAC addressable interface. Note that this latter option does
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* NOT follow the spec for VLANs, but may be useful for doing very
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* large quantities of VLAN MUX/DEMUX onto FrameRelay or ATM PVCs.
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*
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* Must be invoked with rcu_read_lock (ie preempt disabled)
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* or with RTNL.
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*/
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struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id);
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/* found in vlan_dev.c */
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int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *ptype, struct net_device *orig_dev);
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void vlan_dev_set_ingress_priority(const struct net_device *dev,
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u32 skb_prio, u16 vlan_prio);
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int vlan_dev_set_egress_priority(const struct net_device *dev,
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u32 skb_prio, u16 vlan_prio);
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int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
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void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
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int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id);
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void vlan_setup(struct net_device *dev);
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int register_vlan_dev(struct net_device *dev);
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void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
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static inline u32 vlan_get_ingress_priority(struct net_device *dev,
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u16 vlan_tci)
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{
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struct vlan_dev_info *vip = vlan_dev_info(dev);
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return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
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}
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#ifdef CONFIG_VLAN_8021Q_GVRP
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extern int vlan_gvrp_request_join(const struct net_device *dev);
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extern void vlan_gvrp_request_leave(const struct net_device *dev);
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extern int vlan_gvrp_init_applicant(struct net_device *dev);
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extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
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extern int vlan_gvrp_init(void);
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extern void vlan_gvrp_uninit(void);
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#else
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static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
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static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
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static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
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static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
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static inline int vlan_gvrp_init(void) { return 0; }
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static inline void vlan_gvrp_uninit(void) {}
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#endif
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extern const char vlan_fullname[];
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extern const char vlan_version[];
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extern int vlan_netlink_init(void);
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extern void vlan_netlink_fini(void);
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extern struct rtnl_link_ops vlan_link_ops;
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static inline int is_vlan_dev(struct net_device *dev)
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{
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return dev->priv_flags & IFF_802_1Q_VLAN;
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}
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extern int vlan_net_id;
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struct proc_dir_entry;
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struct vlan_net {
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/* /proc/net/vlan */
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struct proc_dir_entry *proc_vlan_dir;
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/* /proc/net/vlan/config */
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struct proc_dir_entry *proc_vlan_conf;
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/* Determines interface naming scheme. */
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unsigned short name_type;
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};
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#endif /* !(__BEN_VLAN_802_1Q_INC__) */
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