net/batman-adv/types.h

   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_ */