398 lines
11 KiB
C
398 lines
11 KiB
C
/*
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* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*
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*/
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#ifndef _NET_BATMAN_ADV_TYPES_H_
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#define _NET_BATMAN_ADV_TYPES_H_
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#include "packet.h"
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#include "bitarray.h"
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#define BAT_HEADER_LEN (ETH_HLEN + \
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((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \
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sizeof(struct unicast_packet) : \
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sizeof(struct bcast_packet))))
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struct hard_iface {
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struct list_head list;
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int16_t if_num;
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char if_status;
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struct net_device *net_dev;
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atomic_t seqno;
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atomic_t frag_seqno;
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unsigned char *packet_buff;
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int packet_len;
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struct kobject *hardif_obj;
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atomic_t refcount;
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struct packet_type batman_adv_ptype;
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struct net_device *soft_iface;
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struct rcu_head rcu;
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};
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/**
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* orig_node - structure for orig_list maintaining nodes of mesh
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* @primary_addr: hosts primary interface address
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* @last_seen: when last packet from this node was received
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* @bcast_seqno_reset: time when the broadcast seqno window was reset
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* @batman_seqno_reset: time when the batman seqno window was reset
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* @gw_flags: flags related to gateway class
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* @flags: for now only VIS_SERVER flag
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* @last_real_seqno: last and best known sequence number
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* @last_ttl: ttl of last received packet
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* @last_bcast_seqno: last broadcast sequence number received by this host
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*
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* @candidates: how many candidates are available
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* @selected: next bonding candidate
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*/
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struct orig_node {
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uint8_t orig[ETH_ALEN];
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uint8_t primary_addr[ETH_ALEN];
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struct neigh_node __rcu *router; /* rcu protected pointer */
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unsigned long *bcast_own;
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uint8_t *bcast_own_sum;
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unsigned long last_seen;
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unsigned long bcast_seqno_reset;
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unsigned long batman_seqno_reset;
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uint8_t gw_flags;
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uint8_t flags;
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atomic_t last_ttvn; /* last seen translation table version number */
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uint16_t tt_crc;
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unsigned char *tt_buff;
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int16_t tt_buff_len;
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spinlock_t tt_buff_lock; /* protects tt_buff */
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atomic_t tt_size;
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bool tt_initialised;
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/* The tt_poss_change flag is used to detect an ongoing roaming phase.
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* If true, then I sent a Roaming_adv to this orig_node and I have to
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* inspect every packet directed to it to check whether it is still
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* the true destination or not. This flag will be reset to false as
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* soon as I receive a new TTVN from this orig_node */
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bool tt_poss_change;
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uint32_t last_real_seqno;
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uint8_t last_ttl;
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DECLARE_BITMAP(bcast_bits, TQ_LOCAL_WINDOW_SIZE);
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uint32_t last_bcast_seqno;
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struct hlist_head neigh_list;
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struct list_head frag_list;
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spinlock_t neigh_list_lock; /* protects neigh_list and router */
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atomic_t refcount;
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struct rcu_head rcu;
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struct hlist_node hash_entry;
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struct bat_priv *bat_priv;
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unsigned long last_frag_packet;
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/* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
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* neigh_node->real_bits, neigh_node->real_packet_count */
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spinlock_t ogm_cnt_lock;
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/* bcast_seqno_lock protects bcast_bits, last_bcast_seqno */
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spinlock_t bcast_seqno_lock;
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spinlock_t tt_list_lock; /* protects tt_list */
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atomic_t bond_candidates;
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struct list_head bond_list;
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};
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struct gw_node {
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struct hlist_node list;
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struct orig_node *orig_node;
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unsigned long deleted;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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/**
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* neigh_node
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* @last_seen: when last packet via this neighbor was received
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*/
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struct neigh_node {
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struct hlist_node list;
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uint8_t addr[ETH_ALEN];
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uint8_t real_packet_count;
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uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE];
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uint8_t tq_index;
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uint8_t tq_avg;
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uint8_t last_ttl;
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struct list_head bonding_list;
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unsigned long last_seen;
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DECLARE_BITMAP(real_bits, TQ_LOCAL_WINDOW_SIZE);
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atomic_t refcount;
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struct rcu_head rcu;
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struct orig_node *orig_node;
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struct hard_iface *if_incoming;
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spinlock_t lq_update_lock; /* protects: tq_recv, tq_index */
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};
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct bcast_duplist_entry {
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uint8_t orig[ETH_ALEN];
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uint16_t crc;
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unsigned long entrytime;
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};
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#endif
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struct bat_priv {
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atomic_t mesh_state;
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struct net_device_stats stats;
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atomic_t aggregated_ogms; /* boolean */
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atomic_t bonding; /* boolean */
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atomic_t fragmentation; /* boolean */
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atomic_t ap_isolation; /* boolean */
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atomic_t bridge_loop_avoidance; /* boolean */
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atomic_t vis_mode; /* VIS_TYPE_* */
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atomic_t gw_mode; /* GW_MODE_* */
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atomic_t gw_sel_class; /* uint */
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atomic_t gw_bandwidth; /* gw bandwidth */
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atomic_t orig_interval; /* uint */
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atomic_t hop_penalty; /* uint */
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atomic_t log_level; /* uint */
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atomic_t bcast_seqno;
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atomic_t bcast_queue_left;
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atomic_t batman_queue_left;
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atomic_t ttvn; /* translation table version number */
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atomic_t tt_ogm_append_cnt;
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atomic_t tt_local_changes; /* changes registered in a OGM interval */
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atomic_t bla_num_requests; /* number of bla requests in flight */
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/* The tt_poss_change flag is used to detect an ongoing roaming phase.
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* If true, then I received a Roaming_adv and I have to inspect every
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* packet directed to me to check whether I am still the true
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* destination or not. This flag will be reset to false as soon as I
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* increase my TTVN */
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bool tt_poss_change;
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char num_ifaces;
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struct debug_log *debug_log;
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struct kobject *mesh_obj;
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struct dentry *debug_dir;
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struct hlist_head forw_bat_list;
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struct hlist_head forw_bcast_list;
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struct hlist_head gw_list;
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struct list_head tt_changes_list; /* tracks changes in a OGM int */
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struct list_head vis_send_list;
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struct hashtable_t *orig_hash;
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struct hashtable_t *tt_local_hash;
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struct hashtable_t *tt_global_hash;
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct hashtable_t *claim_hash;
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struct hashtable_t *backbone_hash;
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#endif
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struct list_head tt_req_list; /* list of pending tt_requests */
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struct list_head tt_roam_list;
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struct hashtable_t *vis_hash;
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct bcast_duplist_entry bcast_duplist[DUPLIST_SIZE];
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int bcast_duplist_curr;
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struct bla_claim_dst claim_dest;
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#endif
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spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
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spinlock_t forw_bcast_list_lock; /* protects */
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spinlock_t tt_changes_list_lock; /* protects tt_changes */
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spinlock_t tt_req_list_lock; /* protects tt_req_list */
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spinlock_t tt_roam_list_lock; /* protects tt_roam_list */
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spinlock_t gw_list_lock; /* protects gw_list and curr_gw */
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spinlock_t vis_hash_lock; /* protects vis_hash */
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spinlock_t vis_list_lock; /* protects vis_info::recv_list */
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atomic_t num_local_tt;
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/* Checksum of the local table, recomputed before sending a new OGM */
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atomic_t tt_crc;
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unsigned char *tt_buff;
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int16_t tt_buff_len;
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spinlock_t tt_buff_lock; /* protects tt_buff */
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struct delayed_work tt_work;
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struct delayed_work orig_work;
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struct delayed_work vis_work;
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struct delayed_work bla_work;
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struct gw_node __rcu *curr_gw; /* rcu protected pointer */
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atomic_t gw_reselect;
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struct hard_iface __rcu *primary_if; /* rcu protected pointer */
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struct vis_info *my_vis_info;
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struct bat_algo_ops *bat_algo_ops;
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};
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struct socket_client {
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struct list_head queue_list;
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unsigned int queue_len;
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unsigned char index;
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spinlock_t lock; /* protects queue_list, queue_len, index */
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wait_queue_head_t queue_wait;
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struct bat_priv *bat_priv;
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};
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struct socket_packet {
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struct list_head list;
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size_t icmp_len;
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struct icmp_packet_rr icmp_packet;
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};
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struct tt_common_entry {
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uint8_t addr[ETH_ALEN];
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struct hlist_node hash_entry;
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uint16_t flags;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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struct tt_local_entry {
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struct tt_common_entry common;
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unsigned long last_seen;
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};
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struct tt_global_entry {
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struct tt_common_entry common;
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struct hlist_head orig_list;
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spinlock_t list_lock; /* protects the list */
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unsigned long roam_at; /* time at which TT_GLOBAL_ROAM was set */
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};
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struct tt_orig_list_entry {
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struct orig_node *orig_node;
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uint8_t ttvn;
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struct rcu_head rcu;
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struct hlist_node list;
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};
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct backbone_gw {
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uint8_t orig[ETH_ALEN];
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short vid; /* used VLAN ID */
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struct hlist_node hash_entry;
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struct bat_priv *bat_priv;
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unsigned long lasttime; /* last time we heard of this backbone gw */
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atomic_t request_sent;
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atomic_t refcount;
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struct rcu_head rcu;
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uint16_t crc; /* crc checksum over all claims */
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};
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struct claim {
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uint8_t addr[ETH_ALEN];
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short vid;
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struct backbone_gw *backbone_gw;
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unsigned long lasttime; /* last time we heard of claim (locals only) */
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struct rcu_head rcu;
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atomic_t refcount;
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struct hlist_node hash_entry;
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};
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#endif
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struct tt_change_node {
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struct list_head list;
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struct tt_change change;
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};
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struct tt_req_node {
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uint8_t addr[ETH_ALEN];
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unsigned long issued_at;
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struct list_head list;
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};
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struct tt_roam_node {
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uint8_t addr[ETH_ALEN];
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atomic_t counter;
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unsigned long first_time;
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struct list_head list;
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};
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/**
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* forw_packet - structure for forw_list maintaining packets to be
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* send/forwarded
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*/
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struct forw_packet {
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struct hlist_node list;
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unsigned long send_time;
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uint8_t own;
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struct sk_buff *skb;
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uint16_t packet_len;
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uint32_t direct_link_flags;
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uint8_t num_packets;
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struct delayed_work delayed_work;
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struct hard_iface *if_incoming;
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};
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/* While scanning for vis-entries of a particular vis-originator
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* this list collects its interfaces to create a subgraph/cluster
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* out of them later
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*/
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struct if_list_entry {
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uint8_t addr[ETH_ALEN];
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bool primary;
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struct hlist_node list;
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};
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struct debug_log {
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char log_buff[LOG_BUF_LEN];
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unsigned long log_start;
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unsigned long log_end;
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spinlock_t lock; /* protects log_buff, log_start and log_end */
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wait_queue_head_t queue_wait;
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};
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struct frag_packet_list_entry {
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struct list_head list;
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uint16_t seqno;
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struct sk_buff *skb;
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};
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struct vis_info {
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unsigned long first_seen;
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/* list of server-neighbors we received a vis-packet
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* from. we should not reply to them. */
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struct list_head recv_list;
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struct list_head send_list;
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struct kref refcount;
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struct hlist_node hash_entry;
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struct bat_priv *bat_priv;
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/* this packet might be part of the vis send queue. */
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struct sk_buff *skb_packet;
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/* vis_info may follow here*/
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} __packed;
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struct vis_info_entry {
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uint8_t src[ETH_ALEN];
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uint8_t dest[ETH_ALEN];
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uint8_t quality; /* quality = 0 client */
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} __packed;
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struct recvlist_node {
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struct list_head list;
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uint8_t mac[ETH_ALEN];
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};
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struct bat_algo_ops {
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struct hlist_node list;
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char *name;
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/* init routing info when hard-interface is enabled */
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int (*bat_iface_enable)(struct hard_iface *hard_iface);
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/* de-init routing info when hard-interface is disabled */
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void (*bat_iface_disable)(struct hard_iface *hard_iface);
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/* (re-)init mac addresses of the protocol information
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* belonging to this hard-interface
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*/
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void (*bat_iface_update_mac)(struct hard_iface *hard_iface);
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/* called when primary interface is selected / changed */
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void (*bat_primary_iface_set)(struct hard_iface *hard_iface);
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/* prepare a new outgoing OGM for the send queue */
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void (*bat_ogm_schedule)(struct hard_iface *hard_iface,
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int tt_num_changes);
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/* send scheduled OGM */
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void (*bat_ogm_emit)(struct forw_packet *forw_packet);
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};
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#endif /* _NET_BATMAN_ADV_TYPES_H_ */
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