net/8021q/vlan.h

   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
   7
   8 /**
   9  *      struct vlan_priority_tci_mapping - vlan egress priority mappings
  10  *      @priority: skb priority
  11  *      @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
  12  *      @next: pointer to next struct
  13  */
  14 struct vlan_priority_tci_mapping {
  15         u32                                     priority;
  16         u16                                     vlan_qos;
  17         struct vlan_priority_tci_mapping        *next;
  18 };
  19
  20
  21 /**
  22  *      struct vlan_pcpu_stats - VLAN percpu rx/tx stats
  23  *      @rx_packets: number of received packets
  24  *      @rx_bytes: number of received bytes
  25  *      @rx_multicast: number of received multicast packets
  26  *      @tx_packets: number of transmitted packets
  27  *      @tx_bytes: number of transmitted bytes
  28  *      @syncp: synchronization point for 64bit counters
  29  *      @rx_errors: number of rx errors
  30  *      @tx_dropped: number of tx drops
  31  */
  32 struct vlan_pcpu_stats {
  33         u64                     rx_packets;
  34         u64                     rx_bytes;
  35         u64                     rx_multicast;
  36         u64                     tx_packets;
  37         u64                     tx_bytes;
  38         struct u64_stats_sync   syncp;
  39         u32                     rx_errors;
  40         u32                     tx_dropped;
  41 };
  42
  43 /**
  44  *      struct vlan_dev_info - VLAN private device data
  45  *      @nr_ingress_mappings: number of ingress priority mappings
  46  *      @ingress_priority_map: ingress priority mappings
  47  *      @nr_egress_mappings: number of egress priority mappings
  48  *      @egress_priority_map: hash of egress priority mappings
  49  *      @vlan_id: VLAN identifier
  50  *      @flags: device flags
  51  *      @real_dev: underlying netdevice
  52  *      @real_dev_addr: address of underlying netdevice
  53  *      @dent: proc dir entry
  54  *      @vlan_pcpu_stats: ptr to percpu rx stats
  55  */
  56 struct vlan_dev_info {
  57         unsigned int                            nr_ingress_mappings;
  58         u32                                     ingress_priority_map[8];
  59         unsigned int                            nr_egress_mappings;
  60         struct vlan_priority_tci_mapping        *egress_priority_map[16];
  61
  62         u16                                     vlan_id;
  63         u16                                     flags;
  64
  65         struct net_device                       *real_dev;
  66         unsigned char                           real_dev_addr[ETH_ALEN];
  67
  68         struct proc_dir_entry                   *dent;
  69         struct vlan_pcpu_stats __percpu         *vlan_pcpu_stats;
  70 };
  71
  72 static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
  73 {
  74         return netdev_priv(dev);
  75 }
  76
  77 static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
  78                                                        u16 vlan_id)
  79 {
  80         struct net_device **array;
  81         array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
  82         return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
  83 }
  84
  85 static inline void vlan_group_set_device(struct vlan_group *vg,
  86                                          u16 vlan_id,
  87                                          struct net_device *dev)
  88 {
  89         struct net_device **array;
  90         if (!vg)
  91                 return;
  92         array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
  93         array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
  94 }
  95
  96 /* Must be invoked with rcu_read_lock or with RTNL. */
  97 static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
  98                                                u16 vlan_id)
  99 {
 100         struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp);
 101
 102         if (grp)
 103                 return vlan_group_get_device(grp, vlan_id);
 104
 105         return NULL;
 106 }
 107
 108 /* found in vlan_dev.c */
 109 void vlan_dev_set_ingress_priority(const struct net_device *dev,
 110                                    u32 skb_prio, u16 vlan_prio);
 111 int vlan_dev_set_egress_priority(const struct net_device *dev,
 112                                  u32 skb_prio, u16 vlan_prio);
 113 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
 114 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
 115
 116 int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id);
 117 void vlan_setup(struct net_device *dev);
 118 int register_vlan_dev(struct net_device *dev);
 119 void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
 120
 121 static inline u32 vlan_get_ingress_priority(struct net_device *dev,
 122                                             u16 vlan_tci)
 123 {
 124         struct vlan_dev_info *vip = vlan_dev_info(dev);
 125
 126         return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
 127 }
 128
 129 #ifdef CONFIG_VLAN_8021Q_GVRP
 130 extern int vlan_gvrp_request_join(const struct net_device *dev);
 131 extern void vlan_gvrp_request_leave(const struct net_device *dev);
 132 extern int vlan_gvrp_init_applicant(struct net_device *dev);
 133 extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
 134 extern int vlan_gvrp_init(void);
 135 extern void vlan_gvrp_uninit(void);
 136 #else
 137 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
 138 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
 139 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
 140 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
 141 static inline int vlan_gvrp_init(void) { return 0; }
 142 static inline void vlan_gvrp_uninit(void) {}
 143 #endif
 144
 145 extern const char vlan_fullname[];
 146 extern const char vlan_version[];
 147 extern int vlan_netlink_init(void);
 148 extern void vlan_netlink_fini(void);
 149
 150 extern struct rtnl_link_ops vlan_link_ops;
 151
 152 extern int vlan_net_id;
 153
 154 struct proc_dir_entry;
 155
 156 struct vlan_net {
 157         /* /proc/net/vlan */
 158         struct proc_dir_entry *proc_vlan_dir;
 159         /* /proc/net/vlan/config */
 160         struct proc_dir_entry *proc_vlan_conf;
 161         /* Determines interface naming scheme. */
 162         unsigned short name_type;
 163 };
 164
 165 #endif /* !(__BEN_VLAN_802_1Q_INC__) */