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 #include <linux/list.h> 7 8 9 /** 10 * struct vlan_priority_tci_mapping - vlan egress priority mappings 11 * @priority: skb priority 12 * @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000 13 * @next: pointer to next struct 14 */ 15 struct vlan_priority_tci_mapping { 16 u32 priority; 17 u16 vlan_qos; 18 struct vlan_priority_tci_mapping *next; 19 }; 20 21 22 /** 23 * struct vlan_pcpu_stats - VLAN percpu rx/tx stats 24 * @rx_packets: number of received packets 25 * @rx_bytes: number of received bytes 26 * @rx_multicast: number of received multicast packets 27 * @tx_packets: number of transmitted packets 28 * @tx_bytes: number of transmitted bytes 29 * @syncp: synchronization point for 64bit counters 30 * @rx_errors: number of rx errors 31 * @tx_dropped: number of tx drops 32 */ 33 struct vlan_pcpu_stats { 34 u64 rx_packets; 35 u64 rx_bytes; 36 u64 rx_multicast; 37 u64 tx_packets; 38 u64 tx_bytes; 39 struct u64_stats_sync syncp; 40 u32 rx_errors; 41 u32 tx_dropped; 42 }; 43 44 struct netpoll; 45 46 /** 47 * struct vlan_dev_priv - VLAN private device data 48 * @nr_ingress_mappings: number of ingress priority mappings 49 * @ingress_priority_map: ingress priority mappings 50 * @nr_egress_mappings: number of egress priority mappings 51 * @egress_priority_map: hash of egress priority mappings 52 * @vlan_proto: VLAN encapsulation protocol 53 * @vlan_id: VLAN identifier 54 * @flags: device flags 55 * @real_dev: underlying netdevice 56 * @real_dev_addr: address of underlying netdevice 57 * @dent: proc dir entry 58 * @vlan_pcpu_stats: ptr to percpu rx stats 59 */ 60 struct vlan_dev_priv { 61 unsigned int nr_ingress_mappings; 62 u32 ingress_priority_map[8]; 63 unsigned int nr_egress_mappings; 64 struct vlan_priority_tci_mapping *egress_priority_map[16]; 65 66 __be16 vlan_proto; 67 u16 vlan_id; 68 u16 flags; 69 70 struct net_device *real_dev; 71 unsigned char real_dev_addr[ETH_ALEN]; 72 73 struct proc_dir_entry *dent; 74 struct vlan_pcpu_stats __percpu *vlan_pcpu_stats; 75 #ifdef CONFIG_NET_POLL_CONTROLLER 76 struct netpoll *netpoll; 77 #endif 78 }; 79 80 static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev) 81 { 82 return netdev_priv(dev); 83 } 84 85 /* if this changes, algorithm will have to be reworked because this 86 * depends on completely exhausting the VLAN identifier space. Thus 87 * it gives constant time look-up, but in many cases it wastes memory. 88 */ 89 #define VLAN_GROUP_ARRAY_SPLIT_PARTS 8 90 #define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS) 91 92 enum vlan_protos { 93 VLAN_PROTO_8021Q = 0, 94 VLAN_PROTO_8021AD, 95 VLAN_PROTO_NUM, 96 }; 97 98 struct vlan_group { 99 unsigned int nr_vlan_devs; 100 struct hlist_node hlist; /* linked list */ 101 struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM] 102 [VLAN_GROUP_ARRAY_SPLIT_PARTS]; 103 }; 104 105 struct vlan_info { 106 struct net_device *real_dev; /* The ethernet(like) device 107 * the vlan is attached to. 108 */ 109 struct vlan_group grp; 110 struct list_head vid_list; 111 unsigned int nr_vids; 112 struct rcu_head rcu; 113 }; 114 115 static inline unsigned int vlan_proto_idx(__be16 proto) 116 { 117 switch (proto) { 118 case __constant_htons(ETH_P_8021Q): 119 return VLAN_PROTO_8021Q; 120 case __constant_htons(ETH_P_8021AD): 121 return VLAN_PROTO_8021AD; 122 default: 123 BUG(); 124 return 0; 125 } 126 } 127 128 static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg, 129 unsigned int pidx, 130 u16 vlan_id) 131 { 132 struct net_device **array; 133 134 array = vg->vlan_devices_arrays[pidx] 135 [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; 136 return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL; 137 } 138 139 static inline struct net_device *vlan_group_get_device(struct vlan_group *vg, 140 __be16 vlan_proto, 141 u16 vlan_id) 142 { 143 return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id); 144 } 145 146 static inline void vlan_group_set_device(struct vlan_group *vg, 147 __be16 vlan_proto, u16 vlan_id, 148 struct net_device *dev) 149 { 150 struct net_device **array; 151 if (!vg) 152 return; 153 array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)] 154 [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; 155 array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev; 156 } 157 158 /* Must be invoked with rcu_read_lock or with RTNL. */ 159 static inline struct net_device *vlan_find_dev(struct net_device *real_dev, 160 __be16 vlan_proto, u16 vlan_id) 161 { 162 struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info); 163 164 if (vlan_info) 165 return vlan_group_get_device(&vlan_info->grp, 166 vlan_proto, vlan_id); 167 168 return NULL; 169 } 170 171 #define vlan_group_for_each_dev(grp, i, dev) \ 172 for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \ 173 if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \ 174 (i) % VLAN_N_VID))) 175 176 /* found in vlan_dev.c */ 177 void vlan_dev_set_ingress_priority(const struct net_device *dev, 178 u32 skb_prio, u16 vlan_prio); 179 int vlan_dev_set_egress_priority(const struct net_device *dev, 180 u32 skb_prio, u16 vlan_prio); 181 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask); 182 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result); 183 184 int vlan_check_real_dev(struct net_device *real_dev, 185 __be16 protocol, u16 vlan_id); 186 void vlan_setup(struct net_device *dev); 187 int register_vlan_dev(struct net_device *dev); 188 void unregister_vlan_dev(struct net_device *dev, struct list_head *head); 189 190 static inline u32 vlan_get_ingress_priority(struct net_device *dev, 191 u16 vlan_tci) 192 { 193 struct vlan_dev_priv *vip = vlan_dev_priv(dev); 194 195 return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7]; 196 } 197 198 #ifdef CONFIG_VLAN_8021Q_GVRP 199 extern int vlan_gvrp_request_join(const struct net_device *dev); 200 extern void vlan_gvrp_request_leave(const struct net_device *dev); 201 extern int vlan_gvrp_init_applicant(struct net_device *dev); 202 extern void vlan_gvrp_uninit_applicant(struct net_device *dev); 203 extern int vlan_gvrp_init(void); 204 extern void vlan_gvrp_uninit(void); 205 #else 206 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; } 207 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {} 208 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; } 209 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {} 210 static inline int vlan_gvrp_init(void) { return 0; } 211 static inline void vlan_gvrp_uninit(void) {} 212 #endif 213 214 #ifdef CONFIG_VLAN_8021Q_MVRP 215 extern int vlan_mvrp_request_join(const struct net_device *dev); 216 extern void vlan_mvrp_request_leave(const struct net_device *dev); 217 extern int vlan_mvrp_init_applicant(struct net_device *dev); 218 extern void vlan_mvrp_uninit_applicant(struct net_device *dev); 219 extern int vlan_mvrp_init(void); 220 extern void vlan_mvrp_uninit(void); 221 #else 222 static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; } 223 static inline void vlan_mvrp_request_leave(const struct net_device *dev) {} 224 static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; } 225 static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {} 226 static inline int vlan_mvrp_init(void) { return 0; } 227 static inline void vlan_mvrp_uninit(void) {} 228 #endif 229 230 extern const char vlan_fullname[]; 231 extern const char vlan_version[]; 232 extern int vlan_netlink_init(void); 233 extern void vlan_netlink_fini(void); 234 235 extern struct rtnl_link_ops vlan_link_ops; 236 237 extern int vlan_net_id; 238 239 struct proc_dir_entry; 240 241 struct vlan_net { 242 /* /proc/net/vlan */ 243 struct proc_dir_entry *proc_vlan_dir; 244 /* /proc/net/vlan/config */ 245 struct proc_dir_entry *proc_vlan_conf; 246 /* Determines interface naming scheme. */ 247 unsigned short name_type; 248 }; 249 250 #endif /* !(__BEN_VLAN_802_1Q_INC__) */ 251