1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) 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 #ifdef CONFIG_BATMAN_ADV_DAT 56 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, 57 unsigned short vid); 58 #endif 59 #define BATADV_BLA_CRC_INIT 0 60 #else /* ifdef CONFIG_BATMAN_ADV_BLA */ 61 62 static inline bool batadv_bla_rx(struct batadv_priv *bat_priv, 63 struct sk_buff *skb, unsigned short vid, 64 int packet_type) 65 { 66 return false; 67 } 68 69 static inline bool batadv_bla_tx(struct batadv_priv *bat_priv, 70 struct sk_buff *skb, unsigned short vid) 71 { 72 return false; 73 } 74 75 static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb, 76 struct batadv_orig_node *orig_node, 77 int hdr_size) 78 { 79 return false; 80 } 81 82 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, 83 u8 *orig, unsigned short vid) 84 { 85 return false; 86 } 87 88 static inline bool 89 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, 90 struct sk_buff *skb) 91 { 92 return false; 93 } 94 95 static inline void 96 batadv_bla_update_orig_address(struct batadv_priv *bat_priv, 97 struct batadv_hard_iface *primary_if, 98 struct batadv_hard_iface *oldif) 99 { 100 } 101 102 static inline int batadv_bla_init(struct batadv_priv *bat_priv) 103 { 104 return 1; 105 } 106 107 static inline void batadv_bla_free(struct batadv_priv *bat_priv) 108 { 109 } 110 111 static inline int batadv_bla_claim_dump(struct sk_buff *msg, 112 struct netlink_callback *cb) 113 { 114 return -EOPNOTSUPP; 115 } 116 117 static inline int batadv_bla_backbone_dump(struct sk_buff *msg, 118 struct netlink_callback *cb) 119 { 120 return -EOPNOTSUPP; 121 } 122 123 static inline 124 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, 125 unsigned short vid) 126 { 127 return true; 128 } 129 130 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */ 131 132 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */ 133