| /* Copyright (C) 2007-2012 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 <linux/kernel.h> |
| |
| #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 { |
| 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 batadv_orig_node - structure for orig_list maintaining nodes of mesh |
| * @primary_addr: hosts primary interface address |
| * @last_seen: 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_real_seqno: last and best known sequence number |
| * @last_ttl: ttl of last received packet |
| * @last_bcast_seqno: last broadcast sequence number received by this host |
| * |
| * @candidates: how many candidates are available |
| * @selected: next bonding candidate |
| */ |
| 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; /* last seen translation table version number */ |
| uint16_t tt_crc; |
| unsigned char *tt_buff; |
| int16_t tt_buff_len; |
| spinlock_t tt_buff_lock; /* protects tt_buff */ |
| atomic_t tt_size; |
| bool tt_initialised; |
| /* The tt_poss_change flag is used to detect an ongoing roaming phase. |
| * If true, then I sent a Roaming_adv to this orig_node and I have to |
| * inspect every packet directed to it to check whether it is still |
| * the true destination or not. This flag will be reset to false as |
| * soon as I receive a new TTVN from this orig_node |
| */ |
| bool tt_poss_change; |
| 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; |
| spinlock_t neigh_list_lock; /* protects neigh_list and router */ |
| atomic_t refcount; |
| struct rcu_head rcu; |
| struct hlist_node hash_entry; |
| struct batadv_priv *bat_priv; |
| unsigned long last_frag_packet; |
| /* 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; |
| spinlock_t tt_list_lock; /* protects tt_list */ |
| atomic_t bond_candidates; |
| struct list_head bond_list; |
| }; |
| |
| struct batadv_gw_node { |
| struct hlist_node list; |
| struct batadv_orig_node *orig_node; |
| unsigned long deleted; |
| atomic_t refcount; |
| struct rcu_head rcu; |
| }; |
| |
| /* batadv_neigh_node |
| * @last_seen: when last packet via this neighbor was received |
| */ |
| struct batadv_neigh_node { |
| struct hlist_node list; |
| uint8_t addr[ETH_ALEN]; |
| uint8_t real_packet_count; |
| 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); |
| atomic_t refcount; |
| struct rcu_head rcu; |
| struct batadv_orig_node *orig_node; |
| struct batadv_hard_iface *if_incoming; |
| spinlock_t lq_update_lock; /* protects: tq_recv, tq_index */ |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| struct batadv_bcast_duplist_entry { |
| uint8_t orig[ETH_ALEN]; |
| uint16_t crc; |
| unsigned long entrytime; |
| }; |
| #endif |
| |
| 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, |
| BATADV_CNT_NUM, |
| }; |
| |
| /** |
| * struct batadv_priv_tt - per mesh interface translation table data |
| * @vn: translation table version number |
| * @local_changes: changes registered in an originator interval |
| * @poss_change: Detect an ongoing roaming phase. If true, then this node |
| * received a roaming_adv and has to inspect every packet directed to it to |
| * check whether it still is the true destination or not. This flag will be |
| * reset to false as soon as the this node's ttvn is increased |
| * @changes_list: tracks tt local changes within an originator interval |
| * @req_list: list of pending tt_requests |
| * @local_crc: Checksum of the local table, recomputed before sending a new OGM |
| */ |
| struct batadv_priv_tt { |
| atomic_t vn; |
| atomic_t ogm_append_cnt; |
| atomic_t local_changes; |
| bool poss_change; |
| 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; |
| spinlock_t last_changeset_lock; /* protects last_changeset */ |
| struct delayed_work work; |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| struct batadv_priv_bla { |
| atomic_t num_requests; /* number of bla requests in flight */ |
| 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 and bcast_duplist_curr */ |
| spinlock_t bcast_duplist_lock; |
| struct batadv_bla_claim_dst claim_dest; |
| struct delayed_work work; |
| }; |
| #endif |
| |
| struct batadv_priv_gw { |
| struct hlist_head list; |
| spinlock_t list_lock; /* protects gw_list and curr_gw */ |
| struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */ |
| atomic_t reselect; |
| }; |
| |
| struct batadv_priv_vis { |
| struct list_head send_list; |
| struct batadv_hashtable *hash; |
| spinlock_t hash_lock; /* protects hash */ |
| spinlock_t list_lock; /* protects 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 { |
| atomic_t mesh_state; |
| struct net_device_stats stats; |
| uint64_t __percpu *bat_counters; /* Per cpu counters */ |
| atomic_t aggregated_ogms; /* boolean */ |
| atomic_t bonding; /* boolean */ |
| atomic_t fragmentation; /* boolean */ |
| atomic_t ap_isolation; /* boolean */ |
| atomic_t bridge_loop_avoidance; /* boolean */ |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| atomic_t distributed_arp_table; /* boolean */ |
| #endif |
| atomic_t vis_mode; /* VIS_TYPE_* */ |
| atomic_t gw_mode; /* GW_MODE_* */ |
| atomic_t gw_sel_class; /* uint */ |
| atomic_t gw_bandwidth; /* gw bandwidth */ |
| atomic_t orig_interval; /* uint */ |
| atomic_t hop_penalty; /* uint */ |
| atomic_t log_level; /* uint */ |
| atomic_t bcast_seqno; |
| atomic_t bcast_queue_left; |
| atomic_t batman_queue_left; |
| char num_ifaces; |
| struct batadv_debug_log *debug_log; |
| 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 */ |
| struct delayed_work orig_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 |
| 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 { |
| 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 { |
| struct list_head list; |
| size_t icmp_len; |
| struct batadv_icmp_packet_rr icmp_packet; |
| }; |
| |
| 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 { |
| struct batadv_tt_common_entry common; |
| unsigned long last_seen; |
| }; |
| |
| struct batadv_tt_global_entry { |
| struct batadv_tt_common_entry common; |
| struct hlist_head orig_list; |
| spinlock_t list_lock; /* protects the list */ |
| unsigned long roam_at; /* time at which TT_GLOBAL_ROAM was set */ |
| }; |
| |
| struct batadv_tt_orig_list_entry { |
| struct batadv_orig_node *orig_node; |
| uint8_t ttvn; |
| atomic_t refcount; |
| struct rcu_head rcu; |
| struct hlist_node list; |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| struct batadv_backbone_gw { |
| uint8_t orig[ETH_ALEN]; |
| short vid; /* used VLAN ID */ |
| struct hlist_node hash_entry; |
| struct batadv_priv *bat_priv; |
| unsigned long lasttime; /* last time we heard of this backbone gw */ |
| atomic_t request_sent; |
| atomic_t refcount; |
| struct rcu_head rcu; |
| uint16_t crc; /* crc checksum over all claims */ |
| }; |
| |
| struct batadv_claim { |
| uint8_t addr[ETH_ALEN]; |
| short vid; |
| struct batadv_backbone_gw *backbone_gw; |
| unsigned long lasttime; /* last time we heard of claim (locals only) */ |
| struct rcu_head rcu; |
| atomic_t refcount; |
| struct hlist_node hash_entry; |
| }; |
| #endif |
| |
| struct batadv_tt_change_node { |
| struct list_head list; |
| struct batadv_tt_change change; |
| }; |
| |
| struct batadv_tt_req_node { |
| uint8_t addr[ETH_ALEN]; |
| unsigned long issued_at; |
| struct list_head list; |
| }; |
| |
| struct batadv_tt_roam_node { |
| uint8_t addr[ETH_ALEN]; |
| atomic_t counter; |
| unsigned long first_time; |
| struct list_head list; |
| }; |
| |
| /* forw_packet - structure for forw_list maintaining packets to be |
| * send/forwarded |
| */ |
| 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; |
| }; |
| |
| /* 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_if_list_entry { |
| uint8_t addr[ETH_ALEN]; |
| bool primary; |
| struct hlist_node list; |
| }; |
| |
| struct batadv_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; |
| }; |
| |
| struct batadv_frag_packet_list_entry { |
| struct list_head list; |
| uint16_t seqno; |
| struct sk_buff *skb; |
| }; |
| |
| struct batadv_vis_info { |
| unsigned long first_seen; |
| /* list of server-neighbors we received a vis-packet |
| * from. we should not reply to them. |
| */ |
| struct list_head recv_list; |
| struct list_head send_list; |
| struct kref refcount; |
| struct hlist_node hash_entry; |
| struct batadv_priv *bat_priv; |
| /* this packet might be part of the vis send queue. */ |
| struct sk_buff *skb_packet; |
| /* vis_info may follow here */ |
| } __packed; |
| |
| struct batadv_vis_info_entry { |
| uint8_t src[ETH_ALEN]; |
| uint8_t dest[ETH_ALEN]; |
| uint8_t quality; /* quality = 0 client */ |
| } __packed; |
| |
| struct batadv_recvlist_node { |
| struct list_head list; |
| uint8_t mac[ETH_ALEN]; |
| }; |
| |
| struct batadv_algo_ops { |
| struct hlist_node list; |
| char *name; |
| /* init routing info when hard-interface is enabled */ |
| int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface); |
| /* de-init routing info when hard-interface is disabled */ |
| void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface); |
| /* (re-)init mac addresses of the protocol information |
| * belonging to this hard-interface |
| */ |
| void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface); |
| /* called when primary interface is selected / changed */ |
| void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface); |
| /* prepare a new outgoing OGM for the send queue */ |
| void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface); |
| /* send scheduled OGM */ |
| 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_ */ |