858 строки
31 KiB
C
858 строки
31 KiB
C
/* Copyright (C) 2007-2013 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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#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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#include <linux/kernel.h>
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/**
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* Maximum overhead for the encapsulation for a payload packet
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*/
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#define BATADV_HEADER_LEN \
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(ETH_HLEN + max(sizeof(struct batadv_unicast_packet), \
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sizeof(struct batadv_bcast_packet)))
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#ifdef CONFIG_BATMAN_ADV_DAT
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/* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
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* BATADV_DAT_ADDR_MAX is changed as well.
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*
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* *Please be careful: batadv_dat_addr_t must be UNSIGNED*
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*/
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#define batadv_dat_addr_t uint16_t
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#endif /* CONFIG_BATMAN_ADV_DAT */
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/**
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* struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
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* @ogm_buff: buffer holding the OGM packet
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* @ogm_buff_len: length of the OGM packet buffer
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* @ogm_seqno: OGM sequence number - used to identify each OGM
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*/
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struct batadv_hard_iface_bat_iv {
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unsigned char *ogm_buff;
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int ogm_buff_len;
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atomic_t ogm_seqno;
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};
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/**
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* struct batadv_hard_iface - network device known to batman-adv
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* @list: list node for batadv_hardif_list
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* @if_num: identificator of the interface
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* @if_status: status of the interface for batman-adv
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* @net_dev: pointer to the net_device
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* @frag_seqno: last fragment sequence number sent by this interface
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* @hardif_obj: kobject of the per interface sysfs "mesh" directory
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* @refcount: number of contexts the object is used
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* @batman_adv_ptype: packet type describing packets that should be processed by
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* batman-adv for this interface
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* @soft_iface: the batman-adv interface which uses this network interface
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* @rcu: struct used for freeing in an RCU-safe manner
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* @bat_iv: BATMAN IV specific per hard interface data
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* @cleanup_work: work queue callback item for hard interface deinit
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*/
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struct batadv_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 frag_seqno;
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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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struct batadv_hard_iface_bat_iv bat_iv;
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struct work_struct cleanup_work;
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};
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/**
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* struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
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* @orig: originator ethernet address
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* @primary_addr: hosts primary interface address
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* @router: router that should be used to reach this originator
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* @batadv_dat_addr_t: address of the orig node in the distributed hash
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* @bcast_own: bitfield containing the number of our OGMs this orig_node
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* rebroadcasted "back" to us (relative to last_real_seqno)
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* @bcast_own_sum: counted result of bcast_own
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* @last_seen: time 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_ttvn: last seen translation table version number
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* @tt_crc: CRC of the translation table
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* @tt_buff: last tt changeset this node received from the orig node
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* @tt_buff_len: length of the last tt changeset this node received from the
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* orig node
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* @tt_buff_lock: lock that protects tt_buff and tt_buff_len
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* @tt_size: number of global TT entries announced by the orig node
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* @tt_initialised: bool keeping track of whether or not this node have received
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* any translation table information from the orig node yet
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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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* @bcast_bits: bitfield containing the info which payload broadcast originated
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* from this orig node this host already has seen (relative to
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* last_bcast_seqno)
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* @last_bcast_seqno: last broadcast sequence number received by this host
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* @neigh_list: list of potential next hop neighbor towards this orig node
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* @frag_list: fragmentation buffer list for fragment re-assembly
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* @last_frag_packet: time when last fragmented packet from this node was
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* received
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* @neigh_list_lock: lock protecting neigh_list, router and bonding_list
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* @hash_entry: hlist node for batadv_priv::orig_hash
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* @bat_priv: pointer to soft_iface this orig node belongs to
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* @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
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* neigh_node->real_bits & neigh_node->real_packet_count
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* @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
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* @bond_candidates: how many candidates are available
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* @bond_list: list of bonding candidates
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in an RCU-safe manner
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*/
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struct batadv_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 batadv_neigh_node __rcu *router; /* rcu protected pointer */
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#ifdef CONFIG_BATMAN_ADV_DAT
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batadv_dat_addr_t dat_addr;
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#endif
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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;
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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 & tt_buff_len */
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atomic_t tt_size;
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bool tt_initialised;
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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, BATADV_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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unsigned long last_frag_packet;
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/* neigh_list_lock protects: neigh_list, router & bonding_list */
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spinlock_t neigh_list_lock;
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struct hlist_node hash_entry;
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struct batadv_priv *bat_priv;
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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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*/
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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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atomic_t bond_candidates;
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struct list_head bond_list;
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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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* struct batadv_gw_node - structure for orig nodes announcing gw capabilities
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* @list: list node for batadv_priv_gw::list
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* @orig_node: pointer to corresponding orig node
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* @deleted: this struct is scheduled for deletion
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in an RCU-safe manner
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*/
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struct batadv_gw_node {
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struct hlist_node list;
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struct batadv_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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* struct batadv_neigh_node - structure for single hop neighbors
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* @list: list node for batadv_orig_node::neigh_list
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* @addr: mac address of neigh node
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* @tq_recv: ring buffer of received TQ values from this neigh node
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* @tq_index: ring buffer index
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* @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
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* @last_ttl: last received ttl from this neigh node
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* @bonding_list: list node for batadv_orig_node::bond_list
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* @last_seen: when last packet via this neighbor was received
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* @real_bits: bitfield containing the number of OGMs received from this neigh
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* node (relative to orig_node->last_real_seqno)
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* @real_packet_count: counted result of real_bits
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* @orig_node: pointer to corresponding orig_node
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* @if_incoming: pointer to incoming hard interface
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* @lq_update_lock: lock protecting tq_recv & tq_index
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in an RCU-safe manner
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*/
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struct batadv_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 tq_recv[BATADV_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, BATADV_TQ_LOCAL_WINDOW_SIZE);
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uint8_t real_packet_count;
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struct batadv_orig_node *orig_node;
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struct batadv_hard_iface *if_incoming;
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spinlock_t lq_update_lock; /* protects tq_recv & tq_index */
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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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* struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
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* @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
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* @crc: crc32 checksum of broadcast payload
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* @entrytime: time when the broadcast packet was received
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*/
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct batadv_bcast_duplist_entry {
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uint8_t orig[ETH_ALEN];
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__be32 crc;
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unsigned long entrytime;
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};
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#endif
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/**
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* enum batadv_counters - indices for traffic counters
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* @BATADV_CNT_TX: transmitted payload traffic packet counter
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* @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
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* @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
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* @BATADV_CNT_RX: received payload traffic packet counter
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* @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
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* @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
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* @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
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* @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
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* @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
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* @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
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* @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
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* @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
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* @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
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* @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
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* @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
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* @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
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* @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
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* @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
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* @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
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* @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
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* @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
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* @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
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* counter
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* @BATADV_CNT_NUM: number of traffic counters
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*/
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enum batadv_counters {
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BATADV_CNT_TX,
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BATADV_CNT_TX_BYTES,
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BATADV_CNT_TX_DROPPED,
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BATADV_CNT_RX,
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BATADV_CNT_RX_BYTES,
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BATADV_CNT_FORWARD,
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BATADV_CNT_FORWARD_BYTES,
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BATADV_CNT_MGMT_TX,
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BATADV_CNT_MGMT_TX_BYTES,
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BATADV_CNT_MGMT_RX,
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BATADV_CNT_MGMT_RX_BYTES,
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BATADV_CNT_TT_REQUEST_TX,
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BATADV_CNT_TT_REQUEST_RX,
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BATADV_CNT_TT_RESPONSE_TX,
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BATADV_CNT_TT_RESPONSE_RX,
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BATADV_CNT_TT_ROAM_ADV_TX,
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BATADV_CNT_TT_ROAM_ADV_RX,
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#ifdef CONFIG_BATMAN_ADV_DAT
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BATADV_CNT_DAT_GET_TX,
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BATADV_CNT_DAT_GET_RX,
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BATADV_CNT_DAT_PUT_TX,
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BATADV_CNT_DAT_PUT_RX,
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BATADV_CNT_DAT_CACHED_REPLY_TX,
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#endif
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BATADV_CNT_NUM,
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};
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/**
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* struct batadv_priv_tt - per mesh interface translation table data
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* @vn: translation table version number
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* @ogm_append_cnt: counter of number of OGMs containing the local tt diff
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* @local_changes: changes registered in an originator interval
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* @changes_list: tracks tt local changes within an originator interval
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* @local_hash: local translation table hash table
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* @global_hash: global translation table hash table
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* @req_list: list of pending & unanswered tt_requests
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* @roam_list: list of the last roaming events of each client limiting the
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* number of roaming events to avoid route flapping
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* @changes_list_lock: lock protecting changes_list
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* @req_list_lock: lock protecting req_list
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* @roam_list_lock: lock protecting roam_list
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* @local_entry_num: number of entries in the local hash table
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* @local_crc: Checksum of the local table, recomputed before sending a new OGM
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* @last_changeset: last tt changeset this host has generated
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* @last_changeset_len: length of last tt changeset this host has generated
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* @last_changeset_lock: lock protecting last_changeset & last_changeset_len
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* @work: work queue callback item for translation table purging
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*/
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struct batadv_priv_tt {
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atomic_t vn;
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atomic_t ogm_append_cnt;
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atomic_t local_changes;
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struct list_head changes_list;
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struct batadv_hashtable *local_hash;
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struct batadv_hashtable *global_hash;
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struct list_head req_list;
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struct list_head roam_list;
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spinlock_t changes_list_lock; /* protects changes */
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spinlock_t req_list_lock; /* protects req_list */
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spinlock_t roam_list_lock; /* protects roam_list */
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atomic_t local_entry_num;
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uint16_t local_crc;
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unsigned char *last_changeset;
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int16_t last_changeset_len;
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/* protects last_changeset & last_changeset_len */
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spinlock_t last_changeset_lock;
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struct delayed_work work;
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};
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/**
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* struct batadv_priv_bla - per mesh interface bridge loope avoidance data
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* @num_requests; number of bla requests in flight
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* @claim_hash: hash table containing mesh nodes this host has claimed
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* @backbone_hash: hash table containing all detected backbone gateways
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* @bcast_duplist: recently received broadcast packets array (for broadcast
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* duplicate suppression)
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* @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
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* @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
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* @claim_dest: local claim data (e.g. claim group)
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* @work: work queue callback item for cleanups & bla announcements
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*/
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct batadv_priv_bla {
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atomic_t num_requests;
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struct batadv_hashtable *claim_hash;
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struct batadv_hashtable *backbone_hash;
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struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
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int bcast_duplist_curr;
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/* protects bcast_duplist & bcast_duplist_curr */
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spinlock_t bcast_duplist_lock;
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struct batadv_bla_claim_dst claim_dest;
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struct delayed_work work;
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};
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#endif
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/**
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* struct batadv_debug_log - debug logging data
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* @log_buff: buffer holding the logs (ring bufer)
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* @log_start: index of next character to read
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* @log_end: index of next character to write
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* @lock: lock protecting log_buff, log_start & log_end
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* @queue_wait: log reader's wait queue
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*/
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#ifdef CONFIG_BATMAN_ADV_DEBUG
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struct batadv_priv_debug_log {
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char log_buff[BATADV_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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#endif
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/**
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* struct batadv_priv_gw - per mesh interface gateway data
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* @list: list of available gateway nodes
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* @list_lock: lock protecting gw_list & curr_gw
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* @curr_gw: pointer to currently selected gateway node
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* @reselect: bool indicating a gateway re-selection is in progress
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*/
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struct batadv_priv_gw {
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struct hlist_head list;
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spinlock_t list_lock; /* protects gw_list & curr_gw */
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struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
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atomic_t reselect;
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};
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/**
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* struct batadv_priv_vis - per mesh interface vis data
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* @send_list: list of batadv_vis_info packets to sent
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* @hash: hash table containing vis data from other nodes in the network
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* @hash_lock: lock protecting the hash table
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* @list_lock: lock protecting my_info::recv_list
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* @work: work queue callback item for vis packet sending
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* @my_info: holds this node's vis data sent on a regular basis
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*/
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struct batadv_priv_vis {
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struct list_head send_list;
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struct batadv_hashtable *hash;
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spinlock_t hash_lock; /* protects hash */
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spinlock_t list_lock; /* protects my_info::recv_list */
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struct delayed_work work;
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struct batadv_vis_info *my_info;
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};
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/**
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* struct batadv_priv_dat - per mesh interface DAT private data
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* @addr: node DAT address
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* @hash: hashtable representing the local ARP cache
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* @work: work queue callback item for cache purging
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*/
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#ifdef CONFIG_BATMAN_ADV_DAT
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struct batadv_priv_dat {
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batadv_dat_addr_t addr;
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|
struct batadv_hashtable *hash;
|
|
struct delayed_work work;
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* struct batadv_priv - per mesh interface data
|
|
* @mesh_state: current status of the mesh (inactive/active/deactivating)
|
|
* @soft_iface: net device which holds this struct as private data
|
|
* @stats: structure holding the data for the ndo_get_stats() call
|
|
* @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
|
|
* @aggregated_ogms: bool indicating whether OGM aggregation is enabled
|
|
* @bonding: bool indicating whether traffic bonding is enabled
|
|
* @fragmentation: bool indicating whether traffic fragmentation is enabled
|
|
* @ap_isolation: bool indicating whether ap isolation is enabled
|
|
* @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
|
|
* enabled
|
|
* @distributed_arp_table: bool indicating whether distributed ARP table is
|
|
* enabled
|
|
* @vis_mode: vis operation: client or server (see batadv_vis_packettype)
|
|
* @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
|
|
* @gw_sel_class: gateway selection class (applies if gw_mode client)
|
|
* @gw_bandwidth: gateway announced bandwidth (applies if gw_mode server)
|
|
* @orig_interval: OGM broadcast interval in milliseconds
|
|
* @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
|
|
* @log_level: configured log level (see batadv_dbg_level)
|
|
* @bcast_seqno: last sent broadcast packet sequence number
|
|
* @bcast_queue_left: number of remaining buffered broadcast packet slots
|
|
* @batman_queue_left: number of remaining OGM packet slots
|
|
* @num_ifaces: number of interfaces assigned to this mesh interface
|
|
* @mesh_obj: kobject for sysfs mesh subdirectory
|
|
* @debug_dir: dentry for debugfs batman-adv subdirectory
|
|
* @forw_bat_list: list of aggregated OGMs that will be forwarded
|
|
* @forw_bcast_list: list of broadcast packets that will be rebroadcasted
|
|
* @orig_hash: hash table containing mesh participants (orig nodes)
|
|
* @forw_bat_list_lock: lock protecting forw_bat_list
|
|
* @forw_bcast_list_lock: lock protecting forw_bcast_list
|
|
* @orig_work: work queue callback item for orig node purging
|
|
* @cleanup_work: work queue callback item for soft interface deinit
|
|
* @primary_if: one of the hard interfaces assigned to this mesh interface
|
|
* becomes the primary interface
|
|
* @bat_algo_ops: routing algorithm used by this mesh interface
|
|
* @bla: bridge loope avoidance data
|
|
* @debug_log: holding debug logging relevant data
|
|
* @gw: gateway data
|
|
* @tt: translation table data
|
|
* @vis: vis data
|
|
* @dat: distributed arp table data
|
|
*/
|
|
struct batadv_priv {
|
|
atomic_t mesh_state;
|
|
struct net_device *soft_iface;
|
|
struct net_device_stats stats;
|
|
uint64_t __percpu *bat_counters; /* Per cpu counters */
|
|
atomic_t aggregated_ogms;
|
|
atomic_t bonding;
|
|
atomic_t fragmentation;
|
|
atomic_t ap_isolation;
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
atomic_t bridge_loop_avoidance;
|
|
#endif
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
atomic_t distributed_arp_table;
|
|
#endif
|
|
atomic_t vis_mode;
|
|
atomic_t gw_mode;
|
|
atomic_t gw_sel_class;
|
|
atomic_t gw_bandwidth;
|
|
atomic_t orig_interval;
|
|
atomic_t hop_penalty;
|
|
#ifdef CONFIG_BATMAN_ADV_DEBUG
|
|
atomic_t log_level;
|
|
#endif
|
|
atomic_t bcast_seqno;
|
|
atomic_t bcast_queue_left;
|
|
atomic_t batman_queue_left;
|
|
char num_ifaces;
|
|
struct kobject *mesh_obj;
|
|
struct dentry *debug_dir;
|
|
struct hlist_head forw_bat_list;
|
|
struct hlist_head forw_bcast_list;
|
|
struct batadv_hashtable *orig_hash;
|
|
spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
|
|
spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
|
|
struct delayed_work orig_work;
|
|
struct work_struct cleanup_work;
|
|
struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
|
|
struct batadv_algo_ops *bat_algo_ops;
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
struct batadv_priv_bla bla;
|
|
#endif
|
|
#ifdef CONFIG_BATMAN_ADV_DEBUG
|
|
struct batadv_priv_debug_log *debug_log;
|
|
#endif
|
|
struct batadv_priv_gw gw;
|
|
struct batadv_priv_tt tt;
|
|
struct batadv_priv_vis vis;
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
struct batadv_priv_dat dat;
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* struct batadv_socket_client - layer2 icmp socket client data
|
|
* @queue_list: packet queue for packets destined for this socket client
|
|
* @queue_len: number of packets in the packet queue (queue_list)
|
|
* @index: socket client's index in the batadv_socket_client_hash
|
|
* @lock: lock protecting queue_list, queue_len & index
|
|
* @queue_wait: socket client's wait queue
|
|
* @bat_priv: pointer to soft_iface this client belongs to
|
|
*/
|
|
struct batadv_socket_client {
|
|
struct list_head queue_list;
|
|
unsigned int queue_len;
|
|
unsigned char index;
|
|
spinlock_t lock; /* protects queue_list, queue_len & index */
|
|
wait_queue_head_t queue_wait;
|
|
struct batadv_priv *bat_priv;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_socket_packet - layer2 icmp packet for socket client
|
|
* @list: list node for batadv_socket_client::queue_list
|
|
* @icmp_len: size of the layer2 icmp packet
|
|
* @icmp_packet: layer2 icmp packet
|
|
*/
|
|
struct batadv_socket_packet {
|
|
struct list_head list;
|
|
size_t icmp_len;
|
|
struct batadv_icmp_packet_rr icmp_packet;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
|
|
* @orig: originator address of backbone node (mac address of primary iface)
|
|
* @vid: vlan id this gateway was detected on
|
|
* @hash_entry: hlist node for batadv_priv_bla::backbone_hash
|
|
* @bat_priv: pointer to soft_iface this backbone gateway belongs to
|
|
* @lasttime: last time we heard of this backbone gw
|
|
* @wait_periods: grace time for bridge forward delays and bla group forming at
|
|
* bootup phase - no bcast traffic is formwared until it has elapsed
|
|
* @request_sent: if this bool is set to true we are out of sync with this
|
|
* backbone gateway - no bcast traffic is formwared until the situation was
|
|
* resolved
|
|
* @crc: crc16 checksum over all claims
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
*/
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
struct batadv_bla_backbone_gw {
|
|
uint8_t orig[ETH_ALEN];
|
|
short vid;
|
|
struct hlist_node hash_entry;
|
|
struct batadv_priv *bat_priv;
|
|
unsigned long lasttime;
|
|
atomic_t wait_periods;
|
|
atomic_t request_sent;
|
|
uint16_t crc;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_bla_claim - claimed non-mesh client structure
|
|
* @addr: mac address of claimed non-mesh client
|
|
* @vid: vlan id this client was detected on
|
|
* @batadv_bla_backbone_gw: pointer to backbone gw claiming this client
|
|
* @lasttime: last time we heard of claim (locals only)
|
|
* @hash_entry: hlist node for batadv_priv_bla::claim_hash
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
*/
|
|
struct batadv_bla_claim {
|
|
uint8_t addr[ETH_ALEN];
|
|
short vid;
|
|
struct batadv_bla_backbone_gw *backbone_gw;
|
|
unsigned long lasttime;
|
|
struct hlist_node hash_entry;
|
|
struct rcu_head rcu;
|
|
atomic_t refcount;
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* struct batadv_tt_common_entry - tt local & tt global common data
|
|
* @addr: mac address of non-mesh client
|
|
* @hash_entry: hlist node for batadv_priv_tt::local_hash or for
|
|
* batadv_priv_tt::global_hash
|
|
* @flags: various state handling flags (see batadv_tt_client_flags)
|
|
* @added_at: timestamp used for purging stale tt common entries
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
*/
|
|
struct batadv_tt_common_entry {
|
|
uint8_t addr[ETH_ALEN];
|
|
struct hlist_node hash_entry;
|
|
uint16_t flags;
|
|
unsigned long added_at;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_local_entry - translation table local entry data
|
|
* @common: general translation table data
|
|
* @last_seen: timestamp used for purging stale tt local entries
|
|
*/
|
|
struct batadv_tt_local_entry {
|
|
struct batadv_tt_common_entry common;
|
|
unsigned long last_seen;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_global_entry - translation table global entry data
|
|
* @common: general translation table data
|
|
* @orig_list: list of orig nodes announcing this non-mesh client
|
|
* @list_lock: lock protecting orig_list
|
|
* @roam_at: time at which TT_GLOBAL_ROAM was set
|
|
*/
|
|
struct batadv_tt_global_entry {
|
|
struct batadv_tt_common_entry common;
|
|
struct hlist_head orig_list;
|
|
spinlock_t list_lock; /* protects orig_list */
|
|
unsigned long roam_at;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
|
|
* @orig_node: pointer to orig node announcing this non-mesh client
|
|
* @ttvn: translation table version number which added the non-mesh client
|
|
* @list: list node for batadv_tt_global_entry::orig_list
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
*/
|
|
struct batadv_tt_orig_list_entry {
|
|
struct batadv_orig_node *orig_node;
|
|
uint8_t ttvn;
|
|
struct hlist_node list;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_change_node - structure for tt changes occured
|
|
* @list: list node for batadv_priv_tt::changes_list
|
|
* @change: holds the actual translation table diff data
|
|
*/
|
|
struct batadv_tt_change_node {
|
|
struct list_head list;
|
|
struct batadv_tt_change change;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_req_node - data to keep track of the tt requests in flight
|
|
* @addr: mac address address of the originator this request was sent to
|
|
* @issued_at: timestamp used for purging stale tt requests
|
|
* @list: list node for batadv_priv_tt::req_list
|
|
*/
|
|
struct batadv_tt_req_node {
|
|
uint8_t addr[ETH_ALEN];
|
|
unsigned long issued_at;
|
|
struct list_head list;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_roam_node - roaming client data
|
|
* @addr: mac address of the client in the roaming phase
|
|
* @counter: number of allowed roaming events per client within a single
|
|
* OGM interval (changes are committed with each OGM)
|
|
* @first_time: timestamp used for purging stale roaming node entries
|
|
* @list: list node for batadv_priv_tt::roam_list
|
|
*/
|
|
struct batadv_tt_roam_node {
|
|
uint8_t addr[ETH_ALEN];
|
|
atomic_t counter;
|
|
unsigned long first_time;
|
|
struct list_head list;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
|
|
* @list: list node for batadv_socket_client::queue_list
|
|
* @send_time: execution time for delayed_work (packet sending)
|
|
* @own: bool for locally generated packets (local OGMs are re-scheduled after
|
|
* sending)
|
|
* @skb: bcast packet's skb buffer
|
|
* @packet_len: size of aggregated OGM packet inside the skb buffer
|
|
* @direct_link_flags: direct link flags for aggregated OGM packets
|
|
* @num_packets: counter for bcast packet retransmission
|
|
* @delayed_work: work queue callback item for packet sending
|
|
* @if_incoming: pointer incoming hard-iface or primary iface if locally
|
|
* generated packet
|
|
*/
|
|
struct batadv_forw_packet {
|
|
struct hlist_node list;
|
|
unsigned long send_time;
|
|
uint8_t own;
|
|
struct sk_buff *skb;
|
|
uint16_t packet_len;
|
|
uint32_t direct_link_flags;
|
|
uint8_t num_packets;
|
|
struct delayed_work delayed_work;
|
|
struct batadv_hard_iface *if_incoming;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_frag_packet_list_entry - storage for fragment packet
|
|
* @list: list node for orig_node::frag_list
|
|
* @seqno: sequence number of the fragment
|
|
* @skb: fragment's skb buffer
|
|
*/
|
|
struct batadv_frag_packet_list_entry {
|
|
struct list_head list;
|
|
uint16_t seqno;
|
|
struct sk_buff *skb;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_vis_info - local data for vis information
|
|
* @first_seen: timestamp used for purging stale vis info entries
|
|
* @recv_list: List of server-neighbors we have received this packet from. This
|
|
* packet should not be re-forward to them again. List elements are struct
|
|
* batadv_vis_recvlist_node
|
|
* @send_list: list of packets to be forwarded
|
|
* @refcount: number of contexts the object is used
|
|
* @hash_entry: hlist node for batadv_priv_vis::hash
|
|
* @bat_priv: pointer to soft_iface this orig node belongs to
|
|
* @skb_packet: contains the vis packet
|
|
*/
|
|
struct batadv_vis_info {
|
|
unsigned long first_seen;
|
|
struct list_head recv_list;
|
|
struct list_head send_list;
|
|
struct kref refcount;
|
|
struct hlist_node hash_entry;
|
|
struct batadv_priv *bat_priv;
|
|
struct sk_buff *skb_packet;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct batadv_vis_info_entry - contains link information for vis
|
|
* @src: source MAC of the link, all zero for local TT entry
|
|
* @dst: destination MAC of the link, client mac address for local TT entry
|
|
* @quality: transmission quality of the link, or 0 for local TT entry
|
|
*/
|
|
struct batadv_vis_info_entry {
|
|
uint8_t src[ETH_ALEN];
|
|
uint8_t dest[ETH_ALEN];
|
|
uint8_t quality;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct batadv_vis_recvlist_node - list entry for batadv_vis_info::recv_list
|
|
* @list: list node for batadv_vis_info::recv_list
|
|
* @mac: MAC address of the originator from where the vis_info was received
|
|
*/
|
|
struct batadv_vis_recvlist_node {
|
|
struct list_head list;
|
|
uint8_t mac[ETH_ALEN];
|
|
};
|
|
|
|
/**
|
|
* struct batadv_vis_if_list_entry - auxiliary data for vis data generation
|
|
* @addr: MAC address of the interface
|
|
* @primary: true if this interface is the primary interface
|
|
* @list: list node the interface list
|
|
*
|
|
* While scanning for vis-entries of a particular vis-originator
|
|
* this list collects its interfaces to create a subgraph/cluster
|
|
* out of them later
|
|
*/
|
|
struct batadv_vis_if_list_entry {
|
|
uint8_t addr[ETH_ALEN];
|
|
bool primary;
|
|
struct hlist_node list;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_algo_ops - mesh algorithm callbacks
|
|
* @list: list node for the batadv_algo_list
|
|
* @name: name of the algorithm
|
|
* @bat_iface_enable: init routing info when hard-interface is enabled
|
|
* @bat_iface_disable: de-init routing info when hard-interface is disabled
|
|
* @bat_iface_update_mac: (re-)init mac addresses of the protocol information
|
|
* belonging to this hard-interface
|
|
* @bat_primary_iface_set: called when primary interface is selected / changed
|
|
* @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
|
|
* @bat_ogm_emit: send scheduled OGM
|
|
*/
|
|
struct batadv_algo_ops {
|
|
struct hlist_node list;
|
|
char *name;
|
|
int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
|
|
};
|
|
|
|
/**
|
|
* struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
|
|
* is used to stored ARP entries needed for the global DAT cache
|
|
* @ip: the IPv4 corresponding to this DAT/ARP entry
|
|
* @mac_addr: the MAC address associated to the stored IPv4
|
|
* @last_update: time in jiffies when this entry was refreshed last time
|
|
* @hash_entry: hlist node for batadv_priv_dat::hash
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
*/
|
|
struct batadv_dat_entry {
|
|
__be32 ip;
|
|
uint8_t mac_addr[ETH_ALEN];
|
|
unsigned long last_update;
|
|
struct hlist_node hash_entry;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_dat_candidate - candidate destination for DAT operations
|
|
* @type: the type of the selected candidate. It can one of the following:
|
|
* - BATADV_DAT_CANDIDATE_NOT_FOUND
|
|
* - BATADV_DAT_CANDIDATE_ORIG
|
|
* @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
|
|
* corresponding originator node structure
|
|
*/
|
|
struct batadv_dat_candidate {
|
|
int type;
|
|
struct batadv_orig_node *orig_node;
|
|
};
|
|
|
|
#endif /* _NET_BATMAN_ADV_TYPES_H_ */
|