Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) #ifndef __BEN_VLAN_802_1Q_INC__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) #define __BEN_VLAN_802_1Q_INC__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <linux/if_vlan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/u64_stats_sync.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) /* if this changes, algorithm will have to be reworked because this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * depends on completely exhausting the VLAN identifier space.  Thus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * it gives constant time look-up, but in many cases it wastes memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #define VLAN_GROUP_ARRAY_SPLIT_PARTS  8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #define VLAN_GROUP_ARRAY_PART_LEN     (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) enum vlan_protos {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	VLAN_PROTO_8021Q	= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	VLAN_PROTO_8021AD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	VLAN_PROTO_NUM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) struct vlan_group {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	unsigned int		nr_vlan_devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	struct hlist_node	hlist;	/* linked list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 					       [VLAN_GROUP_ARRAY_SPLIT_PARTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) struct vlan_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	struct net_device	*real_dev; /* The ethernet(like) device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 					    * the vlan is attached to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 					    */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	struct vlan_group	grp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	struct list_head	vid_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	unsigned int		nr_vids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	struct rcu_head		rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static inline int vlan_proto_idx(__be16 proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	switch (proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	case htons(ETH_P_8021Q):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		return VLAN_PROTO_8021Q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	case htons(ETH_P_8021AD):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		return VLAN_PROTO_8021AD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		WARN(1, "invalid VLAN protocol: 0x%04x\n", ntohs(proto));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 							 unsigned int pidx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 							 u16 vlan_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct net_device **array;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	array = vg->vlan_devices_arrays[pidx]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 				       [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 						       __be16 vlan_proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 						       u16 vlan_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	int pidx = vlan_proto_idx(vlan_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (pidx < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	return __vlan_group_get_device(vg, pidx, vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) static inline void vlan_group_set_device(struct vlan_group *vg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 					 __be16 vlan_proto, u16 vlan_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 					 struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	int pidx = vlan_proto_idx(vlan_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	struct net_device **array;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	if (!vg || pidx < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	array = vg->vlan_devices_arrays[pidx]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 				       [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) /* Must be invoked with rcu_read_lock or with RTNL. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 					       __be16 vlan_proto, u16 vlan_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	if (vlan_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		return vlan_group_get_device(&vlan_info->grp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 					     vlan_proto, vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static inline netdev_features_t vlan_tnl_features(struct net_device *real_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	netdev_features_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	ret = real_dev->hw_enc_features &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	      (NETIF_F_CSUM_MASK | NETIF_F_ALL_TSO | NETIF_F_GSO_ENCAP_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	if ((ret & NETIF_F_GSO_ENCAP_ALL) && (ret & NETIF_F_CSUM_MASK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		return (ret & ~NETIF_F_CSUM_MASK) | NETIF_F_HW_CSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #define vlan_group_for_each_dev(grp, i, dev) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 							    (i) % VLAN_N_VID)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int vlan_filter_push_vids(struct vlan_info *vlan_info, __be16 proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) void vlan_filter_drop_vids(struct vlan_info *vlan_info, __be16 proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* found in vlan_dev.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) void vlan_dev_set_ingress_priority(const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 				   u32 skb_prio, u16 vlan_prio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int vlan_dev_set_egress_priority(const struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 				 u32 skb_prio, u16 vlan_prio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) int vlan_check_real_dev(struct net_device *real_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			__be16 protocol, u16 vlan_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) void vlan_setup(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) void vlan_dev_uninit(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) bool vlan_dev_inherit_address(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			      struct net_device *real_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static inline u32 vlan_get_ingress_priority(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 					    u16 vlan_tci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	struct vlan_dev_priv *vip = vlan_dev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #ifdef CONFIG_VLAN_8021Q_GVRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int vlan_gvrp_request_join(const struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) void vlan_gvrp_request_leave(const struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int vlan_gvrp_init_applicant(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) void vlan_gvrp_uninit_applicant(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int vlan_gvrp_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) void vlan_gvrp_uninit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static inline int vlan_gvrp_init(void) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static inline void vlan_gvrp_uninit(void) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #ifdef CONFIG_VLAN_8021Q_MVRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int vlan_mvrp_request_join(const struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) void vlan_mvrp_request_leave(const struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) int vlan_mvrp_init_applicant(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) void vlan_mvrp_uninit_applicant(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) int vlan_mvrp_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) void vlan_mvrp_uninit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static inline int vlan_mvrp_init(void) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static inline void vlan_mvrp_uninit(void) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) extern const char vlan_fullname[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) extern const char vlan_version[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int vlan_netlink_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) void vlan_netlink_fini(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) extern struct rtnl_link_ops vlan_link_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) extern unsigned int vlan_net_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct proc_dir_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct vlan_net {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	/* /proc/net/vlan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	struct proc_dir_entry *proc_vlan_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	/* /proc/net/vlan/config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct proc_dir_entry *proc_vlan_conf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	/* Determines interface naming scheme. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	unsigned short name_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) #endif /* !(__BEN_VLAN_802_1Q_INC__) */