Initial file dump from open source releaseHEADmaster

1 files changed, 250 insertions, 0 deletions

diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
new file mode 100644
index 00000000..ba5983f3
--- /dev/null
+++ b/net/8021q/vlan.h
@@ -0,0 +1,250 @@
+#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_proto: VLAN encapsulation protocol
+ *	@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];
+
+	__be16					vlan_proto;
+	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)
+
+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 __constant_htons(ETH_P_8021Q):
+		return VLAN_PROTO_8021Q;
+	case __constant_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);
+
+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
+
+#ifdef CONFIG_VLAN_8021Q_MVRP
+extern int vlan_mvrp_request_join(const struct net_device *dev);
+extern void vlan_mvrp_request_leave(const struct net_device *dev);
+extern int vlan_mvrp_init_applicant(struct net_device *dev);
+extern void vlan_mvrp_uninit_applicant(struct net_device *dev);
+extern int vlan_mvrp_init(void);
+extern 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[];
+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__) */