File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
new file mode 100644
index 0000000..cc15579
--- /dev/null
+++ b/net/8021q/vlan.h
@@ -0,0 +1,175 @@
+#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>
+
+/* 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)
+
+enum vlan_protos {
+ VLAN_PROTO_8021Q = 0,
+ VLAN_PROTO_8021AD,
+ VLAN_PROTO_NUM,
+};
+
+struct vlan_group {
+ unsigned int nr_vlan_devs;
+ struct hlist_node hlist; /* linked list */
+ struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
+ [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 unsigned int vlan_proto_idx(__be16 proto)
+{
+ switch (proto) {
+ case htons(ETH_P_8021Q):
+ return VLAN_PROTO_8021Q;
+ case htons(ETH_P_8021AD):
+ return VLAN_PROTO_8021AD;
+ default:
+ BUG();
+ return 0;
+ }
+}
+
+static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
+ unsigned int pidx,
+ u16 vlan_id)
+{
+ struct net_device **array;
+
+ array = vg->vlan_devices_arrays[pidx]
+ [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+ return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
+}
+
+static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
+ __be16 vlan_proto,
+ u16 vlan_id)
+{
+ return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id);
+}
+
+static inline void vlan_group_set_device(struct vlan_group *vg,
+ __be16 vlan_proto, u16 vlan_id,
+ struct net_device *dev)
+{
+ struct net_device **array;
+ if (!vg)
+ return;
+ array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)]
+ [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,
+ __be16 vlan_proto, 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_proto, vlan_id);
+
+ return NULL;
+}
+
+#define vlan_group_for_each_dev(grp, i, dev) \
+ for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
+ if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
+ (i) % VLAN_N_VID)))
+
+/* 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,
+ __be16 protocol, 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);
+bool vlan_dev_inherit_address(struct net_device *dev,
+ struct net_device *real_dev);
+
+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
+int vlan_gvrp_request_join(const struct net_device *dev);
+void vlan_gvrp_request_leave(const struct net_device *dev);
+int vlan_gvrp_init_applicant(struct net_device *dev);
+void vlan_gvrp_uninit_applicant(struct net_device *dev);
+int vlan_gvrp_init(void);
+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
+
+#ifdef CONFIG_VLAN_8021Q_MVRP
+int vlan_mvrp_request_join(const struct net_device *dev);
+void vlan_mvrp_request_leave(const struct net_device *dev);
+int vlan_mvrp_init_applicant(struct net_device *dev);
+void vlan_mvrp_uninit_applicant(struct net_device *dev);
+int vlan_mvrp_init(void);
+void vlan_mvrp_uninit(void);
+#else
+static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
+static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
+static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
+static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
+static inline int vlan_mvrp_init(void) { return 0; }
+static inline void vlan_mvrp_uninit(void) {}
+#endif
+
+extern const char vlan_fullname[];
+extern const char vlan_version[];
+int vlan_netlink_init(void);
+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__) */