net/batman-adv/types.h

   1 /*
   2  * Copyright (C) 2007-2010 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 batman_if {
  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         struct kref 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 *router;
  71         unsigned long *bcast_own;
  72         uint8_t *bcast_own_sum;
  73         uint8_t tq_own;
  74         int tq_asym_penalty;
  75         unsigned long last_valid;
  76         unsigned long bcast_seqno_reset;
  77         unsigned long batman_seqno_reset;
  78         uint8_t gw_flags;
  79         uint8_t flags;
  80         unsigned char *hna_buff;
  81         int16_t hna_buff_len;
  82         uint32_t last_real_seqno;
  83         uint8_t last_ttl;
  84         unsigned long bcast_bits[NUM_WORDS];
  85         uint32_t last_bcast_seqno;
  86         struct list_head neigh_list;
  87         struct list_head frag_list;
  88         unsigned long last_frag_packet;
  89         struct {
  90                 uint8_t candidates;
  91                 struct neigh_node *selected;
  92         } bond;
  93 };
  94
  95 struct gw_node {
  96         struct hlist_node list;
  97         struct orig_node *orig_node;
  98         unsigned long deleted;
  99         struct kref refcount;
 100         struct rcu_head rcu;
 101 };
 102
 103 /**
 104  *      neigh_node
 105  *      @last_valid: when last packet via this neighbor was received
 106  */
 107 struct neigh_node {
 108         struct list_head list;
 109         uint8_t addr[ETH_ALEN];
 110         uint8_t real_packet_count;
 111         uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE];
 112         uint8_t tq_index;
 113         uint8_t tq_avg;
 114         uint8_t last_ttl;
 115         struct neigh_node *next_bond_candidate;
 116         unsigned long last_valid;
 117         unsigned long real_bits[NUM_WORDS];
 118         struct orig_node *orig_node;
 119         struct batman_if *if_incoming;
 120 };
 121
 122
 123 struct bat_priv {
 124         atomic_t mesh_state;
 125         struct net_device_stats stats;
 126         atomic_t aggregated_ogms;       /* boolean */
 127         atomic_t bonding;               /* boolean */
 128         atomic_t fragmentation;         /* boolean */
 129         atomic_t vis_mode;              /* VIS_TYPE_* */
 130         atomic_t gw_mode;               /* GW_MODE_* */
 131         atomic_t gw_sel_class;          /* uint */
 132         atomic_t gw_bandwidth;          /* gw bandwidth */
 133         atomic_t orig_interval;         /* uint */
 134         atomic_t hop_penalty;           /* uint */
 135         atomic_t log_level;             /* uint */
 136         atomic_t bcast_seqno;
 137         atomic_t bcast_queue_left;
 138         atomic_t batman_queue_left;
 139         char num_ifaces;
 140         struct hlist_head softif_neigh_list;
 141         struct softif_neigh *softif_neigh;
 142         struct debug_log *debug_log;
 143         struct batman_if *primary_if;
 144         struct kobject *mesh_obj;
 145         struct dentry *debug_dir;
 146         struct hlist_head forw_bat_list;
 147         struct hlist_head forw_bcast_list;
 148         struct hlist_head gw_list;
 149         struct list_head vis_send_list;
 150         struct hashtable_t *orig_hash;
 151         struct hashtable_t *hna_local_hash;
 152         struct hashtable_t *hna_global_hash;
 153         struct hashtable_t *vis_hash;
 154         spinlock_t orig_hash_lock; /* protects orig_hash */
 155         spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
 156         spinlock_t forw_bcast_list_lock; /* protects  */
 157         spinlock_t hna_lhash_lock; /* protects hna_local_hash */
 158         spinlock_t hna_ghash_lock; /* protects hna_global_hash */
 159         spinlock_t gw_list_lock; /* protects gw_list */
 160         spinlock_t vis_hash_lock; /* protects vis_hash */
 161         spinlock_t vis_list_lock; /* protects vis_info::recv_list */
 162         spinlock_t softif_neigh_lock; /* protects soft-interface neigh list */
 163         int16_t num_local_hna;
 164         atomic_t hna_local_changed;
 165         struct delayed_work hna_work;
 166         struct delayed_work orig_work;
 167         struct delayed_work vis_work;
 168         struct gw_node *curr_gw;
 169         struct vis_info *my_vis_info;
 170 };
 171
 172 struct socket_client {
 173         struct list_head queue_list;
 174         unsigned int queue_len;
 175         unsigned char index;
 176         spinlock_t lock; /* protects queue_list, queue_len, index */
 177         wait_queue_head_t queue_wait;
 178         struct bat_priv *bat_priv;
 179 };
 180
 181 struct socket_packet {
 182         struct list_head list;
 183         size_t icmp_len;
 184         struct icmp_packet_rr icmp_packet;
 185 };
 186
 187 struct hna_local_entry {
 188         uint8_t addr[ETH_ALEN];
 189         unsigned long last_seen;
 190         char never_purge;
 191 };
 192
 193 struct hna_global_entry {
 194         uint8_t addr[ETH_ALEN];
 195         struct orig_node *orig_node;
 196 };
 197
 198 /**
 199  *      forw_packet - structure for forw_list maintaining packets to be
 200  *                    send/forwarded
 201  */
 202 struct forw_packet {
 203         struct hlist_node list;
 204         unsigned long send_time;
 205         uint8_t own;
 206         struct sk_buff *skb;
 207         uint16_t packet_len;
 208         uint32_t direct_link_flags;
 209         uint8_t num_packets;
 210         struct delayed_work delayed_work;
 211         struct batman_if *if_incoming;
 212 };
 213
 214 /* While scanning for vis-entries of a particular vis-originator
 215  * this list collects its interfaces to create a subgraph/cluster
 216  * out of them later
 217  */
 218 struct if_list_entry {
 219         uint8_t addr[ETH_ALEN];
 220         bool primary;
 221         struct hlist_node list;
 222 };
 223
 224 struct debug_log {
 225         char log_buff[LOG_BUF_LEN];
 226         unsigned long log_start;
 227         unsigned long log_end;
 228         spinlock_t lock; /* protects log_buff, log_start and log_end */
 229         wait_queue_head_t queue_wait;
 230 };
 231
 232 struct frag_packet_list_entry {
 233         struct list_head list;
 234         uint16_t seqno;
 235         struct sk_buff *skb;
 236 };
 237
 238 struct vis_info {
 239         unsigned long       first_seen;
 240         struct list_head    recv_list;
 241                             /* list of server-neighbors we received a vis-packet
 242                              * from.  we should not reply to them. */
 243         struct list_head send_list;
 244         struct kref refcount;
 245         struct bat_priv *bat_priv;
 246         /* this packet might be part of the vis send queue. */
 247         struct sk_buff *skb_packet;
 248         /* vis_info may follow here*/
 249 } __attribute__((packed));
 250
 251 struct vis_info_entry {
 252         uint8_t  src[ETH_ALEN];
 253         uint8_t  dest[ETH_ALEN];
 254         uint8_t  quality;       /* quality = 0 means HNA */
 255 } __attribute__((packed));
 256
 257 struct recvlist_node {
 258         struct list_head list;
 259         uint8_t mac[ETH_ALEN];
 260 };
 261
 262 struct softif_neigh {
 263         struct hlist_node list;
 264         uint8_t addr[ETH_ALEN];
 265         unsigned long last_seen;
 266         short vid;
 267         struct kref refcount;
 268         struct rcu_head rcu;
 269 };
 270
 271 #endif /* _NET_BATMAN_ADV_TYPES_H_ */