diff options
author | Patrick McHardy <kaber@trash.net> | 2013-04-19 02:04:29 +0000 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2013-04-19 14:45:27 -0400 |
commit | 1fd9b1fc310314911f66d2f14a8e4f0ef37bf47b (patch) | |
tree | 20422146c46fb38a5cdd0d14e671a0793c3389b4 /net/8021q/vlan.h | |
parent | 80d5c3689b886308247da295a228a54df49a44f6 (diff) | |
download | linux-1fd9b1fc310314911f66d2f14a8e4f0ef37bf47b.tar.bz2 |
net: vlan: prepare for 802.1ad support
Make the encapsulation protocol value a property of VLAN devices and change
the device lookup functions to take the protocol value into account.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan.h')
-rw-r--r-- | net/8021q/vlan.h | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 670f1e8cfc0f..245de9653db0 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -49,6 +49,7 @@ struct netpoll; * @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 @@ -62,6 +63,7 @@ struct vlan_dev_priv { unsigned int nr_egress_mappings; struct vlan_priority_tci_mapping *egress_priority_map[16]; + __be16 vlan_proto; u16 vlan_id; u16 flags; @@ -87,10 +89,16 @@ static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev) #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_NUM, +}; + struct vlan_group { unsigned int nr_vlan_devs; struct hlist_node hlist; /* linked list */ - struct net_device **vlan_devices_arrays[VLAN_GROUP_ARRAY_SPLIT_PARTS]; + struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM] + [VLAN_GROUP_ARRAY_SPLIT_PARTS]; }; struct vlan_info { @@ -103,37 +111,64 @@ struct vlan_info { struct rcu_head rcu; }; -static inline struct net_device *vlan_group_get_device(struct vlan_group *vg, - u16 vlan_id) +static inline unsigned int vlan_proto_idx(__be16 proto) +{ + switch (proto) { + case __constant_htons(ETH_P_8021Q): + return VLAN_PROTO_8021Q; + default: + BUG(); + } +} + +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[vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; + + 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, - u16 vlan_id, + __be16 vlan_proto, u16 vlan_id, struct net_device *dev) { struct net_device **array; if (!vg) return; - array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; + 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, - u16 vlan_id) + __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_id); + 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); @@ -142,7 +177,8 @@ int vlan_dev_set_egress_priority(const struct net_device *dev, 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, u16 vlan_id); +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); |