1 /* 2 * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors: 3 * 4 * Marek Lindner, Simon Wunderlich 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of version 2 of the GNU General Public 8 * License as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA 19 * 20 */ 21 22 23 24 #ifndef _NET_BATMAN_ADV_TYPES_H_ 25 #define _NET_BATMAN_ADV_TYPES_H_ 26 27 #include "packet.h" 28 #include "bitarray.h" 29 30 #define BAT_HEADER_LEN (sizeof(struct ethhdr) + \ 31 ((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \ 32 sizeof(struct unicast_packet) : \ 33 sizeof(struct bcast_packet)))) 34 35 36 struct hard_iface { 37 struct list_head list; 38 int16_t if_num; 39 char if_status; 40 struct net_device *net_dev; 41 atomic_t seqno; 42 atomic_t frag_seqno; 43 unsigned char *packet_buff; 44 int packet_len; 45 struct kobject *hardif_obj; 46 atomic_t refcount; 47 struct packet_type batman_adv_ptype; 48 struct net_device *soft_iface; 49 struct rcu_head rcu; 50 }; 51 52 /** 53 * orig_node - structure for orig_list maintaining nodes of mesh 54 * @primary_addr: hosts primary interface address 55 * @last_valid: when last packet from this node was received 56 * @bcast_seqno_reset: time when the broadcast seqno window was reset 57 * @batman_seqno_reset: time when the batman seqno window was reset 58 * @gw_flags: flags related to gateway class 59 * @flags: for now only VIS_SERVER flag 60 * @last_real_seqno: last and best known squence number 61 * @last_ttl: ttl of last received packet 62 * @last_bcast_seqno: last broadcast sequence number received by this host 63 * 64 * @candidates: how many candidates are available 65 * @selected: next bonding candidate 66 */ 67 struct orig_node { 68 uint8_t orig[ETH_ALEN]; 69 uint8_t primary_addr[ETH_ALEN]; 70 struct neigh_node __rcu *router; /* rcu protected pointer */ 71 unsigned long *bcast_own; 72 uint8_t *bcast_own_sum; 73 unsigned long last_valid; 74 unsigned long bcast_seqno_reset; 75 unsigned long batman_seqno_reset; 76 uint8_t gw_flags; 77 uint8_t flags; 78 unsigned char *tt_buff; 79 int16_t tt_buff_len; 80 uint32_t last_real_seqno; 81 uint8_t last_ttl; 82 unsigned long bcast_bits[NUM_WORDS]; 83 uint32_t last_bcast_seqno; 84 struct hlist_head neigh_list; 85 struct list_head frag_list; 86 spinlock_t neigh_list_lock; /* protects neigh_list and router */ 87 atomic_t refcount; 88 struct rcu_head rcu; 89 struct hlist_node hash_entry; 90 struct bat_priv *bat_priv; 91 unsigned long last_frag_packet; 92 /* ogm_cnt_lock protects: bcast_own, bcast_own_sum, 93 * neigh_node->real_bits, neigh_node->real_packet_count */ 94 spinlock_t ogm_cnt_lock; 95 /* bcast_seqno_lock protects bcast_bits, last_bcast_seqno */ 96 spinlock_t bcast_seqno_lock; 97 atomic_t bond_candidates; 98 struct list_head bond_list; 99 }; 100 101 struct gw_node { 102 struct hlist_node list; 103 struct orig_node *orig_node; 104 unsigned long deleted; 105 atomic_t refcount; 106 struct rcu_head rcu; 107 }; 108 109 /** 110 * neigh_node 111 * @last_valid: when last packet via this neighbor was received 112 */ 113 struct neigh_node { 114 struct hlist_node list; 115 uint8_t addr[ETH_ALEN]; 116 uint8_t real_packet_count; 117 uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE]; 118 uint8_t tq_index; 119 uint8_t tq_avg; 120 uint8_t last_ttl; 121 struct list_head bonding_list; 122 unsigned long last_valid; 123 unsigned long real_bits[NUM_WORDS]; 124 atomic_t refcount; 125 struct rcu_head rcu; 126 struct orig_node *orig_node; 127 struct hard_iface *if_incoming; 128 spinlock_t tq_lock; /* protects: tq_recv, tq_index */ 129 }; 130 131 132 struct bat_priv { 133 atomic_t mesh_state; 134 struct net_device_stats stats; 135 atomic_t aggregated_ogms; /* boolean */ 136 atomic_t bonding; /* boolean */ 137 atomic_t fragmentation; /* boolean */ 138 atomic_t vis_mode; /* VIS_TYPE_* */ 139 atomic_t gw_mode; /* GW_MODE_* */ 140 atomic_t gw_sel_class; /* uint */ 141 atomic_t gw_bandwidth; /* gw bandwidth */ 142 atomic_t orig_interval; /* uint */ 143 atomic_t hop_penalty; /* uint */ 144 atomic_t log_level; /* uint */ 145 atomic_t bcast_seqno; 146 atomic_t bcast_queue_left; 147 atomic_t batman_queue_left; 148 char num_ifaces; 149 struct debug_log *debug_log; 150 struct kobject *mesh_obj; 151 struct dentry *debug_dir; 152 struct hlist_head forw_bat_list; 153 struct hlist_head forw_bcast_list; 154 struct hlist_head gw_list; 155 struct hlist_head softif_neigh_vids; 156 struct list_head vis_send_list; 157 struct hashtable_t *orig_hash; 158 struct hashtable_t *tt_local_hash; 159 struct hashtable_t *tt_global_hash; 160 struct hashtable_t *vis_hash; 161 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */ 162 spinlock_t forw_bcast_list_lock; /* protects */ 163 spinlock_t tt_lhash_lock; /* protects tt_local_hash */ 164 spinlock_t tt_ghash_lock; /* protects tt_global_hash */ 165 spinlock_t gw_list_lock; /* protects gw_list and curr_gw */ 166 spinlock_t vis_hash_lock; /* protects vis_hash */ 167 spinlock_t vis_list_lock; /* protects vis_info::recv_list */ 168 spinlock_t softif_neigh_lock; /* protects soft-interface neigh list */ 169 spinlock_t softif_neigh_vid_lock; /* protects soft-interface vid list */ 170 int16_t num_local_tt; 171 atomic_t tt_local_changed; 172 struct delayed_work tt_work; 173 struct delayed_work orig_work; 174 struct delayed_work vis_work; 175 struct gw_node __rcu *curr_gw; /* rcu protected pointer */ 176 struct hard_iface __rcu *primary_if; /* rcu protected pointer */ 177 struct vis_info *my_vis_info; 178 }; 179 180 struct socket_client { 181 struct list_head queue_list; 182 unsigned int queue_len; 183 unsigned char index; 184 spinlock_t lock; /* protects queue_list, queue_len, index */ 185 wait_queue_head_t queue_wait; 186 struct bat_priv *bat_priv; 187 }; 188 189 struct socket_packet { 190 struct list_head list; 191 size_t icmp_len; 192 struct icmp_packet_rr icmp_packet; 193 }; 194 195 struct tt_local_entry { 196 uint8_t addr[ETH_ALEN]; 197 unsigned long last_seen; 198 char never_purge; 199 struct hlist_node hash_entry; 200 }; 201 202 struct tt_global_entry { 203 uint8_t addr[ETH_ALEN]; 204 struct orig_node *orig_node; 205 struct hlist_node hash_entry; 206 }; 207 208 /** 209 * forw_packet - structure for forw_list maintaining packets to be 210 * send/forwarded 211 */ 212 struct forw_packet { 213 struct hlist_node list; 214 unsigned long send_time; 215 uint8_t own; 216 struct sk_buff *skb; 217 uint16_t packet_len; 218 uint32_t direct_link_flags; 219 uint8_t num_packets; 220 struct delayed_work delayed_work; 221 struct hard_iface *if_incoming; 222 }; 223 224 /* While scanning for vis-entries of a particular vis-originator 225 * this list collects its interfaces to create a subgraph/cluster 226 * out of them later 227 */ 228 struct if_list_entry { 229 uint8_t addr[ETH_ALEN]; 230 bool primary; 231 struct hlist_node list; 232 }; 233 234 struct debug_log { 235 char log_buff[LOG_BUF_LEN]; 236 unsigned long log_start; 237 unsigned long log_end; 238 spinlock_t lock; /* protects log_buff, log_start and log_end */ 239 wait_queue_head_t queue_wait; 240 }; 241 242 struct frag_packet_list_entry { 243 struct list_head list; 244 uint16_t seqno; 245 struct sk_buff *skb; 246 }; 247 248 struct vis_info { 249 unsigned long first_seen; 250 struct list_head recv_list; 251 /* list of server-neighbors we received a vis-packet 252 * from. we should not reply to them. */ 253 struct list_head send_list; 254 struct kref refcount; 255 struct hlist_node hash_entry; 256 struct bat_priv *bat_priv; 257 /* this packet might be part of the vis send queue. */ 258 struct sk_buff *skb_packet; 259 /* vis_info may follow here*/ 260 } __packed; 261 262 struct vis_info_entry { 263 uint8_t src[ETH_ALEN]; 264 uint8_t dest[ETH_ALEN]; 265 uint8_t quality; /* quality = 0 client */ 266 } __packed; 267 268 struct recvlist_node { 269 struct list_head list; 270 uint8_t mac[ETH_ALEN]; 271 }; 272 273 struct softif_neigh_vid { 274 struct hlist_node list; 275 struct bat_priv *bat_priv; 276 short vid; 277 atomic_t refcount; 278 struct softif_neigh __rcu *softif_neigh; 279 struct rcu_head rcu; 280 struct hlist_head softif_neigh_list; 281 }; 282 283 struct softif_neigh { 284 struct hlist_node list; 285 uint8_t addr[ETH_ALEN]; 286 unsigned long last_seen; 287 atomic_t refcount; 288 struct rcu_head rcu; 289 }; 290 291 #endif /* _NET_BATMAN_ADV_TYPES_H_ */ 292