/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA */ #ifndef _NET_BATMAN_ADV_TYPES_H_ #define _NET_BATMAN_ADV_TYPES_H_ #include "packet.h" #include "bitarray.h" #include /** * Maximum overhead for the encapsulation for a payload packet */ #define BATADV_HEADER_LEN \ (ETH_HLEN + max(sizeof(struct batadv_unicast_packet), \ sizeof(struct batadv_bcast_packet))) #ifdef CONFIG_BATMAN_ADV_DAT /* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed, * BATADV_DAT_ADDR_MAX is changed as well. * * *Please be careful: batadv_dat_addr_t must be UNSIGNED* */ #define batadv_dat_addr_t uint16_t #endif /* CONFIG_BATMAN_ADV_DAT */ /** * struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data * @ogm_buff: buffer holding the OGM packet * @ogm_buff_len: length of the OGM packet buffer * @ogm_seqno: OGM sequence number - used to identify each OGM */ struct batadv_hard_iface_bat_iv { unsigned char *ogm_buff; int ogm_buff_len; atomic_t ogm_seqno; }; /** * struct batadv_hard_iface - network device known to batman-adv * @list: list node for batadv_hardif_list * @if_num: identificator of the interface * @if_status: status of the interface for batman-adv * @net_dev: pointer to the net_device * @frag_seqno: last fragment sequence number sent by this interface * @hardif_obj: kobject of the per interface sysfs "mesh" directory * @refcount: number of contexts the object is used * @batman_adv_ptype: packet type describing packets that should be processed by * batman-adv for this interface * @soft_iface: the batman-adv interface which uses this network interface * @rcu: struct used for freeing in an RCU-safe manner * @bat_iv: BATMAN IV specific per hard interface data * @cleanup_work: work queue callback item for hard interface deinit */ struct batadv_hard_iface { struct list_head list; int16_t if_num; char if_status; struct net_device *net_dev; atomic_t frag_seqno; struct kobject *hardif_obj; atomic_t refcount; struct packet_type batman_adv_ptype; struct net_device *soft_iface; struct rcu_head rcu; struct batadv_hard_iface_bat_iv bat_iv; struct work_struct cleanup_work; }; /** * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh * @orig: originator ethernet address * @primary_addr: hosts primary interface address * @router: router that should be used to reach this originator * @batadv_dat_addr_t: address of the orig node in the distributed hash * @bcast_own: bitfield containing the number of our OGMs this orig_node * rebroadcasted "back" to us (relative to last_real_seqno) * @bcast_own_sum: counted result of bcast_own * @last_seen: time when last packet from this node was received * @bcast_seqno_reset: time when the broadcast seqno window was reset * @batman_seqno_reset: time when the batman seqno window was reset * @gw_flags: flags related to gateway class * @flags: for now only VIS_SERVER flag * @last_ttvn: last seen translation table version number * @tt_crc: CRC of the translation table * @tt_buff: last tt changeset this node received from the orig node * @tt_buff_len: length of the last tt changeset this node received from the * orig node * @tt_buff_lock: lock that protects tt_buff and tt_buff_len * @tt_size: number of global TT entries announced by the orig node * @tt_initialised: bool keeping track of whether or not this node have received * any translation table information from the orig node yet * @last_real_seqno: last and best known sequence number * @last_ttl: ttl of last received packet * @bcast_bits: bitfield containing the info which payload broadcast originated * from this orig node this host already has seen (relative to * last_bcast_seqno) * @last_bcast_seqno: last broadcast sequence number received by this host * @neigh_list: list of potential next hop neighbor towards this orig node * @frag_list: fragmentation buffer list for fragment re-assembly * @last_frag_packet: time when last fragmented packet from this node was * received * @neigh_list_lock: lock protecting neigh_list, router and bonding_list * @hash_entry: hlist node for batadv_priv::orig_hash * @bat_priv: pointer to soft_iface this orig node belongs to * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum, * neigh_node->real_bits & neigh_node->real_packet_count * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno * @bond_candidates: how many candidates are available * @bond_list: list of bonding candidates * @refcount: number of contexts the object is used * @rcu: struct used for freeing in an RCU-safe manner * @in_coding_list: list of nodes this orig can hear * @out_coding_list: list of nodes that can hear this orig * @in_coding_list_lock: protects in_coding_list * @out_coding_list_lock: protects out_coding_list */ struct batadv_orig_node { uint8_t orig[ETH_ALEN]; uint8_t primary_addr[ETH_ALEN]; struct batadv_neigh_node __rcu *router; /* rcu protected pointer */ #ifdef CONFIG_BATMAN_ADV_DAT batadv_dat_addr_t dat_addr; #endif unsigned long *bcast_own; uint8_t *bcast_own_sum; unsigned long last_seen; unsigned long bcast_seqno_reset; unsigned long batman_seqno_reset; uint8_t gw_flags; uint8_t flags; atomic_t last_ttvn; uint16_t tt_crc; unsigned char *tt_buff; int16_t tt_buff_len; spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */ atomic_t tt_size; bool tt_initialised; uint32_t last_real_seqno; uint8_t last_ttl; DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); uint32_t last_bcast_seqno; struct hlist_head neigh_list; struct list_head frag_list; unsigned long last_frag_packet; /* neigh_list_lock protects: neigh_list, router & bonding_list */ spinlock_t neigh_list_lock; struct hlist_node hash_entry; struct batadv_priv *bat_priv; /* ogm_cnt_lock protects: bcast_own, bcast_own_sum, * neigh_node->real_bits & neigh_node->real_packet_count */ spinlock_t ogm_cnt_lock; /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */ spinlock_t bcast_seqno_lock; atomic_t bond_candidates; struct list_head bond_list; atomic_t refcount; struct rcu_head rcu; #ifdef CONFIG_BATMAN_ADV_NC struct list_head in_coding_list; struct list_head out_coding_list; spinlock_t in_coding_list_lock; /* Protects in_coding_list */ spinlock_t out_coding_list_lock; /* Protects out_coding_list */ #endif }; /** * struct batadv_gw_node - structure for orig nodes announcing gw capabilities * @list: list node for batadv_priv_gw::list * @orig_node: pointer to corresponding orig node * @deleted: this struct is scheduled for deletion * @refcount: number of contexts the object is used * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_gw_node { struct hlist_node list; struct batadv_orig_node *orig_node; unsigned long deleted; atomic_t refcount; struct rcu_head rcu; }; /** * struct batadv_neigh_node - structure for single hop neighbors * @list: list node for batadv_orig_node::neigh_list * @addr: mac address of neigh node * @tq_recv: ring buffer of received TQ values from this neigh node * @tq_index: ring buffer index * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv) * @last_ttl: last received ttl from this neigh node * @bonding_list: list node for batadv_orig_node::bond_list * @last_seen: when last packet via this neighbor was received * @real_bits: bitfield containing the number of OGMs received from this neigh * node (relative to orig_node->last_real_seqno) * @real_packet_count: counted result of real_bits * @orig_node: pointer to corresponding orig_node * @if_incoming: pointer to incoming hard interface * @lq_update_lock: lock protecting tq_recv & tq_index * @refcount: number of contexts the object is used * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_neigh_node { struct hlist_node list; uint8_t addr[ETH_ALEN]; uint8_t tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE]; uint8_t tq_index; uint8_t tq_avg; uint8_t last_ttl; struct list_head bonding_list; unsigned long last_seen; DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); uint8_t real_packet_count; struct batadv_orig_node *orig_node; struct batadv_hard_iface *if_incoming; spinlock_t lq_update_lock; /* protects tq_recv & tq_index */ atomic_t refcount; struct rcu_head rcu; }; /** * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression * @orig[ETH_ALEN]: mac address of orig node orginating the broadcast * @crc: crc32 checksum of broadcast payload * @entrytime: time when the broadcast packet was received */ #ifdef CONFIG_BATMAN_ADV_BLA struct batadv_bcast_duplist_entry { uint8_t orig[ETH_ALEN]; __be32 crc; unsigned long entrytime; }; #endif /** * enum batadv_counters - indices for traffic counters * @BATADV_CNT_TX: transmitted payload traffic packet counter * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter * @BATADV_CNT_RX: received payload traffic packet counter * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet * counter * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet * counter * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc * mode. * @BATADV_CNT_NUM: number of traffic counters */ enum batadv_counters { BATADV_CNT_TX, BATADV_CNT_TX_BYTES, BATADV_CNT_TX_DROPPED, BATADV_CNT_RX, BATADV_CNT_RX_BYTES, BATADV_CNT_FORWARD, BATADV_CNT_FORWARD_BYTES, BATADV_CNT_MGMT_TX, BATADV_CNT_MGMT_TX_BYTES, BATADV_CNT_MGMT_RX, BATADV_CNT_MGMT_RX_BYTES, BATADV_CNT_TT_REQUEST_TX, BATADV_CNT_TT_REQUEST_RX, BATADV_CNT_TT_RESPONSE_TX, BATADV_CNT_TT_RESPONSE_RX, BATADV_CNT_TT_ROAM_ADV_TX, BATADV_CNT_TT_ROAM_ADV_RX, #ifdef CONFIG_BATMAN_ADV_DAT BATADV_CNT_DAT_GET_TX, BATADV_CNT_DAT_GET_RX, BATADV_CNT_DAT_PUT_TX, BATADV_CNT_DAT_PUT_RX, BATADV_CNT_DAT_CACHED_REPLY_TX, #endif #ifdef CONFIG_BATMAN_ADV_NC BATADV_CNT_NC_CODE, BATADV_CNT_NC_CODE_BYTES, BATADV_CNT_NC_RECODE, BATADV_CNT_NC_RECODE_BYTES, BATADV_CNT_NC_BUFFER, BATADV_CNT_NC_DECODE, BATADV_CNT_NC_DECODE_BYTES, BATADV_CNT_NC_DECODE_FAILED, BATADV_CNT_NC_SNIFFED, #endif BATADV_CNT_NUM, }; /** * struct batadv_priv_tt - per mesh interface translation table data * @vn: translation table version number * @ogm_append_cnt: counter of number of OGMs containing the local tt diff * @local_changes: changes registered in an originator interval * @changes_list: tracks tt local changes within an originator interval * @local_hash: local translation table hash table * @global_hash: global translation table hash table * @req_list: list of pending & unanswered tt_requests * @roam_list: list of the last roaming events of each client limiting the * number of roaming events to avoid route flapping * @changes_list_lock: lock protecting changes_list * @req_list_lock: lock protecting req_list * @roam_list_lock: lock protecting roam_list * @local_entry_num: number of entries in the local hash table * @local_crc: Checksum of the local table, recomputed before sending a new OGM * @last_changeset: last tt changeset this host has generated * @last_changeset_len: length of last tt changeset this host has generated * @last_changeset_lock: lock protecting last_changeset & last_changeset_len * @work: work queue callback item for translation table purging */ struct batadv_priv_tt { atomic_t vn; atomic_t ogm_append_cnt; atomic_t local_changes; struct list_head changes_list; struct batadv_hashtable *local_hash; struct batadv_hashtable *global_hash; struct list_head req_list; struct list_head roam_list; spinlock_t changes_list_lock; /* protects changes */ spinlock_t req_list_lock; /* protects req_list */ spinlock_t roam_list_lock; /* protects roam_list */ atomic_t local_entry_num; uint16_t local_crc; unsigned char *last_changeset; int16_t last_changeset_len; /* protects last_changeset & last_changeset_len */ spinlock_t last_changeset_lock; struct delayed_work work; }; /** * struct batadv_priv_bla - per mesh interface bridge loope avoidance data * @num_requests; number of bla requests in flight * @claim_hash: hash table containing mesh nodes this host has claimed * @backbone_hash: hash table containing all detected backbone gateways * @bcast_duplist: recently received broadcast packets array (for broadcast * duplicate suppression) * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr * @claim_dest: local claim data (e.g. claim group) * @work: work queue callback item for cleanups & bla announcements */ #ifdef CONFIG_BATMAN_ADV_BLA struct batadv_priv_bla { atomic_t num_requests; struct batadv_hashtable *claim_hash; struct batadv_hashtable *backbone_hash; struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE]; int bcast_duplist_curr; /* protects bcast_duplist & bcast_duplist_curr */ spinlock_t bcast_duplist_lock; struct batadv_bla_claim_dst claim_dest; struct delayed_work work; }; #endif /** * struct batadv_debug_log - debug logging data * @log_buff: buffer holding the logs (ring bufer) * @log_start: index of next character to read * @log_end: index of next character to write * @lock: lock protecting log_buff, log_start & log_end * @queue_wait: log reader's wait queue */ #ifdef CONFIG_BATMAN_ADV_DEBUG struct batadv_priv_debug_log { char log_buff[BATADV_LOG_BUF_LEN]; unsigned long log_start; unsigned long log_end; spinlock_t lock; /* protects log_buff, log_start and log_end */ wait_queue_head_t queue_wait; }; #endif /** * struct batadv_priv_gw - per mesh interface gateway data * @list: list of available gateway nodes * @list_lock: lock protecting gw_list & curr_gw * @curr_gw: pointer to currently selected gateway node * @reselect: bool indicating a gateway re-selection is in progress */ struct batadv_priv_gw { struct hlist_head list; spinlock_t list_lock; /* protects gw_list & curr_gw */ struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */ atomic_t reselect; }; /** * struct batadv_priv_vis - per mesh interface vis data * @send_list: list of batadv_vis_info packets to sent * @hash: hash table containing vis data from other nodes in the network * @hash_lock: lock protecting the hash table * @list_lock: lock protecting my_info::recv_list * @work: work queue callback item for vis packet sending * @my_info: holds this node's vis data sent on a regular basis */ struct batadv_priv_vis { struct list_head send_list; struct batadv_hashtable *hash; spinlock_t hash_lock; /* protects hash */ spinlock_t list_lock; /* protects my_info::recv_list */ struct delayed_work work; struct batadv_vis_info *my_info; }; /** * struct batadv_priv_dat - per mesh interface DAT private data * @addr: node DAT address * @hash: hashtable representing the local ARP cache * @work: work queue callback item for cache purging */ #ifdef CONFIG_BATMAN_ADV_DAT struct batadv_priv_dat { batadv_dat_addr_t addr; struct batadv_hashtable *hash; struct delayed_work work; }; #endif /** * struct batadv_priv_nc - per mesh interface network coding private data * @work: work queue callback item for cleanup * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq * @max_fwd_delay: maximum packet forward delay to allow coding of packets * @max_buffer_time: buffer time for sniffed packets used to decoding * @timestamp_fwd_flush: timestamp of last forward packet queue flush * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge * @coding_hash: Hash table used to buffer skbs while waiting for another * incoming skb to code it with. Skbs are added to the buffer just before being * forwarded in routing.c * @decoding_hash: Hash table used to buffer skbs that might be needed to decode * a received coded skb. The buffer is used for 1) skbs arriving on the * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs * forwarded by batman-adv. */ struct batadv_priv_nc { struct delayed_work work; struct dentry *debug_dir; u8 min_tq; u32 max_fwd_delay; u32 max_buffer_time; unsigned long timestamp_fwd_flush; unsigned long timestamp_sniffed_purge; struct batadv_hashtable *coding_hash; struct batadv_hashtable *decoding_hash; }; /** * 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 * @network_coding: bool indicating whether network coding is enabled * @batadv_priv_nc: network coding 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 #ifdef CONFIG_BATMAN_ADV_NC atomic_t network_coding; struct batadv_priv_nc nc; #endif /* CONFIG_BATMAN_ADV_NC */ }; /** * 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_nc_node - network coding node * @list: next and prev pointer for the list handling * @addr: the node's mac address * @refcount: number of contexts the object is used by * @rcu: struct used for freeing in an RCU-safe manner * @orig_node: pointer to corresponding orig node struct * @last_seen: timestamp of last ogm received from this node */ struct batadv_nc_node { struct list_head list; uint8_t addr[ETH_ALEN]; atomic_t refcount; struct rcu_head rcu; struct batadv_orig_node *orig_node; unsigned long last_seen; }; /** * struct batadv_nc_path - network coding path * @hash_entry: next and prev pointer for the list handling * @rcu: struct used for freeing in an RCU-safe manner * @refcount: number of contexts the object is used by * @packet_list: list of buffered packets for this path * @packet_list_lock: access lock for packet list * @next_hop: next hop (destination) of path * @prev_hop: previous hop (source) of path * @last_valid: timestamp for last validation of path */ struct batadv_nc_path { struct hlist_node hash_entry; struct rcu_head rcu; atomic_t refcount; struct list_head packet_list; spinlock_t packet_list_lock; /* Protects packet_list */ uint8_t next_hop[ETH_ALEN]; uint8_t prev_hop[ETH_ALEN]; unsigned long last_valid; }; /** * struct batadv_nc_packet - network coding packet used when coding and * decoding packets * @list: next and prev pointer for the list handling * @packet_id: crc32 checksum of skb data * @timestamp: field containing the info when the packet was added to path * @neigh_node: pointer to original next hop neighbor of skb * @skb: skb which can be encoded or used for decoding * @nc_path: pointer to path this nc packet is attached to */ struct batadv_nc_packet { struct list_head list; __be32 packet_id; unsigned long timestamp; struct batadv_neigh_node *neigh_node; struct sk_buff *skb; struct batadv_nc_path *nc_path; }; /** * batadv_skb_cb - control buffer structure used to store private data relevant * to batman-adv in the skb->cb buffer in skbs. * @decoded: Marks a skb as decoded, which is checked when searching for coding * opportunities in network-coding.c */ struct batadv_skb_cb { bool decoded; }; /** * 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_ */