1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) B.A.T.M.A.N. contributors: 3 * 4 * Marek Lindner, Simon Wunderlich 5 */ 6 7 #ifndef _NET_BATMAN_ADV_ORIGINATOR_H_ 8 #define _NET_BATMAN_ADV_ORIGINATOR_H_ 9 10 #include "main.h" 11 12 #include <linux/compiler.h> 13 #include <linux/if_ether.h> 14 #include <linux/jhash.h> 15 #include <linux/kref.h> 16 #include <linux/netlink.h> 17 #include <linux/skbuff.h> 18 #include <linux/types.h> 19 20 bool batadv_compare_orig(const struct hlist_node *node, const void *data2); 21 int batadv_originator_init(struct batadv_priv *bat_priv); 22 void batadv_originator_free(struct batadv_priv *bat_priv); 23 void batadv_purge_orig_ref(struct batadv_priv *bat_priv); 24 void batadv_orig_node_release(struct kref *ref); 25 struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, 26 const u8 *addr); 27 struct batadv_hardif_neigh_node * 28 batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, 29 const u8 *neigh_addr); 30 void batadv_hardif_neigh_release(struct kref *ref); 31 struct batadv_neigh_node * 32 batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, 33 struct batadv_hard_iface *hard_iface, 34 const u8 *neigh_addr); 35 void batadv_neigh_node_release(struct kref *ref); 36 struct batadv_neigh_node * 37 batadv_orig_router_get(struct batadv_orig_node *orig_node, 38 const struct batadv_hard_iface *if_outgoing); 39 struct batadv_neigh_node * 40 batadv_orig_to_router(struct batadv_priv *bat_priv, u8 *orig_addr, 41 struct batadv_hard_iface *if_outgoing); 42 struct batadv_neigh_ifinfo * 43 batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, 44 struct batadv_hard_iface *if_outgoing); 45 struct batadv_neigh_ifinfo * 46 batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, 47 struct batadv_hard_iface *if_outgoing); 48 void batadv_neigh_ifinfo_release(struct kref *ref); 49 50 int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb); 51 52 struct batadv_orig_ifinfo * 53 batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, 54 struct batadv_hard_iface *if_outgoing); 55 struct batadv_orig_ifinfo * 56 batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, 57 struct batadv_hard_iface *if_outgoing); 58 void batadv_orig_ifinfo_release(struct kref *ref); 59 60 int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb); 61 struct batadv_orig_node_vlan * 62 batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, 63 unsigned short vid); 64 struct batadv_orig_node_vlan * 65 batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, 66 unsigned short vid); 67 void batadv_orig_node_vlan_release(struct kref *ref); 68 69 /** 70 * batadv_choose_orig() - Return the index of the orig entry in the hash table 71 * @data: mac address of the originator node 72 * @size: the size of the hash table 73 * 74 * Return: the hash index where the object represented by @data should be 75 * stored at. 76 */ batadv_choose_orig(const void * data,u32 size)77 static inline u32 batadv_choose_orig(const void *data, u32 size) 78 { 79 u32 hash = 0; 80 81 hash = jhash(data, ETH_ALEN, hash); 82 return hash % size; 83 } 84 85 struct batadv_orig_node * 86 batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data); 87 88 /** 89 * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release 90 * the originator-vlan object 91 * @orig_vlan: the originator-vlan object to release 92 */ 93 static inline void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan * orig_vlan)94 batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) 95 { 96 if (!orig_vlan) 97 return; 98 99 kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); 100 } 101 102 /** 103 * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release 104 * the neigh_ifinfo 105 * @neigh_ifinfo: the neigh_ifinfo object to release 106 */ 107 static inline void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo * neigh_ifinfo)108 batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) 109 { 110 if (!neigh_ifinfo) 111 return; 112 113 kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); 114 } 115 116 /** 117 * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter 118 * and possibly release it 119 * @hardif_neigh: hardif neigh neighbor to free 120 */ 121 static inline void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node * hardif_neigh)122 batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) 123 { 124 if (!hardif_neigh) 125 return; 126 127 kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); 128 } 129 130 /** 131 * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly 132 * release it 133 * @neigh_node: neigh neighbor to free 134 */ batadv_neigh_node_put(struct batadv_neigh_node * neigh_node)135 static inline void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) 136 { 137 if (!neigh_node) 138 return; 139 140 kref_put(&neigh_node->refcount, batadv_neigh_node_release); 141 } 142 143 /** 144 * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release 145 * the orig_ifinfo 146 * @orig_ifinfo: the orig_ifinfo object to release 147 */ 148 static inline void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo * orig_ifinfo)149 batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) 150 { 151 if (!orig_ifinfo) 152 return; 153 154 kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); 155 } 156 157 /** 158 * batadv_orig_node_put() - decrement the orig node refcounter and possibly 159 * release it 160 * @orig_node: the orig node to free 161 */ batadv_orig_node_put(struct batadv_orig_node * orig_node)162 static inline void batadv_orig_node_put(struct batadv_orig_node *orig_node) 163 { 164 if (!orig_node) 165 return; 166 167 kref_put(&orig_node->refcount, batadv_orig_node_release); 168 } 169 170 #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */ 171