1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: 3 * 4 * Simon Wunderlich 5 */ 6 7 #ifndef _NET_BATMAN_ADV_BLA_H_ 8 #define _NET_BATMAN_ADV_BLA_H_ 9 10 #include "main.h" 11 12 #include <linux/compiler.h> 13 #include <linux/netdevice.h> 14 #include <linux/netlink.h> 15 #include <linux/skbuff.h> 16 #include <linux/stddef.h> 17 #include <linux/types.h> 18 19 /** 20 * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop 21 * detect frame sent by bridge loop avoidance 22 * @mac: mac address to check 23 * 24 * Return: true if the it looks like a loop detect frame 25 * (mac starts with BA:BE), false otherwise 26 */ 27 static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac) 28 { 29 if (mac[0] == 0xba && mac[1] == 0xbe) 30 return true; 31 32 return false; 33 } 34 35 #ifdef CONFIG_BATMAN_ADV_BLA 36 bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, 37 unsigned short vid, int packet_type); 38 bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, 39 unsigned short vid); 40 bool batadv_bla_is_backbone_gw(struct sk_buff *skb, 41 struct batadv_orig_node *orig_node, 42 int hdr_size); 43 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb); 44 int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb); 45 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig, 46 unsigned short vid); 47 bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, 48 struct sk_buff *skb); 49 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv, 50 struct batadv_hard_iface *primary_if, 51 struct batadv_hard_iface *oldif); 52 void batadv_bla_status_update(struct net_device *net_dev); 53 int batadv_bla_init(struct batadv_priv *bat_priv); 54 void batadv_bla_free(struct batadv_priv *bat_priv); 55 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb); 56 #ifdef CONFIG_BATMAN_ADV_DAT 57 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, 58 unsigned short vid); 59 #endif 60 #define BATADV_BLA_CRC_INIT 0 61 #else /* ifdef CONFIG_BATMAN_ADV_BLA */ 62 63 static inline bool batadv_bla_rx(struct batadv_priv *bat_priv, 64 struct sk_buff *skb, unsigned short vid, 65 int packet_type) 66 { 67 return false; 68 } 69 70 static inline bool batadv_bla_tx(struct batadv_priv *bat_priv, 71 struct sk_buff *skb, unsigned short vid) 72 { 73 return false; 74 } 75 76 static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb, 77 struct batadv_orig_node *orig_node, 78 int hdr_size) 79 { 80 return false; 81 } 82 83 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, 84 u8 *orig, unsigned short vid) 85 { 86 return false; 87 } 88 89 static inline bool 90 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, 91 struct sk_buff *skb) 92 { 93 return false; 94 } 95 96 static inline void 97 batadv_bla_update_orig_address(struct batadv_priv *bat_priv, 98 struct batadv_hard_iface *primary_if, 99 struct batadv_hard_iface *oldif) 100 { 101 } 102 103 static inline int batadv_bla_init(struct batadv_priv *bat_priv) 104 { 105 return 1; 106 } 107 108 static inline void batadv_bla_free(struct batadv_priv *bat_priv) 109 { 110 } 111 112 static inline int batadv_bla_claim_dump(struct sk_buff *msg, 113 struct netlink_callback *cb) 114 { 115 return -EOPNOTSUPP; 116 } 117 118 static inline int batadv_bla_backbone_dump(struct sk_buff *msg, 119 struct netlink_callback *cb) 120 { 121 return -EOPNOTSUPP; 122 } 123 124 static inline 125 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, 126 unsigned short vid) 127 { 128 return true; 129 } 130 131 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */ 132 133 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */ 134