| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: |
| * |
| * Marek Lindner, Simon Wunderlich |
| */ |
| |
| #ifndef _NET_BATMAN_ADV_TYPES_H_ |
| #define _NET_BATMAN_ADV_TYPES_H_ |
| |
| #ifndef _NET_BATMAN_ADV_MAIN_H_ |
| #error only "main.h" can be included directly |
| #endif |
| |
| #include <linux/average.h> |
| #include <linux/bitops.h> |
| #include <linux/compiler.h> |
| #include <linux/if.h> |
| #include <linux/if_ether.h> |
| #include <linux/kref.h> |
| #include <linux/mutex.h> |
| #include <linux/netdevice.h> |
| #include <linux/netlink.h> |
| #include <linux/sched.h> /* for linux/wait.h */ |
| #include <linux/seq_file.h> |
| #include <linux/skbuff.h> |
| #include <linux/spinlock.h> |
| #include <linux/timer.h> |
| #include <linux/types.h> |
| #include <linux/wait.h> |
| #include <linux/workqueue.h> |
| #include <uapi/linux/batadv_packet.h> |
| #include <uapi/linux/batman_adv.h> |
| |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| |
| /** |
| * typedef batadv_dat_addr_t - 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* |
| */ |
| typedef u16 batadv_dat_addr_t; |
| |
| #endif /* CONFIG_BATMAN_ADV_DAT */ |
| |
| /** |
| * enum batadv_dhcp_recipient - dhcp destination |
| */ |
| enum batadv_dhcp_recipient { |
| /** @BATADV_DHCP_NO: packet is not a dhcp message */ |
| BATADV_DHCP_NO = 0, |
| |
| /** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */ |
| BATADV_DHCP_TO_SERVER, |
| |
| /** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */ |
| BATADV_DHCP_TO_CLIENT, |
| }; |
| |
| /** |
| * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the |
| * wire only |
| */ |
| #define BATADV_TT_REMOTE_MASK 0x00FF |
| |
| /** |
| * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync |
| * among the nodes. These flags are used to compute the global/local CRC |
| */ |
| #define BATADV_TT_SYNC_MASK 0x00F0 |
| |
| /** |
| * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data |
| */ |
| struct batadv_hard_iface_bat_iv { |
| /** @ogm_buff: buffer holding the OGM packet */ |
| unsigned char *ogm_buff; |
| |
| /** @ogm_buff_len: length of the OGM packet buffer */ |
| int ogm_buff_len; |
| |
| /** @ogm_seqno: OGM sequence number - used to identify each OGM */ |
| atomic_t ogm_seqno; |
| |
| /** @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len */ |
| struct mutex ogm_buff_mutex; |
| }; |
| |
| /** |
| * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V |
| */ |
| enum batadv_v_hard_iface_flags { |
| /** |
| * @BATADV_FULL_DUPLEX: tells if the connection over this link is |
| * full-duplex |
| */ |
| BATADV_FULL_DUPLEX = BIT(0), |
| |
| /** |
| * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that |
| * no throughput data is available for this interface and that default |
| * values are assumed. |
| */ |
| BATADV_WARNING_DEFAULT = BIT(1), |
| }; |
| |
| /** |
| * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data |
| */ |
| struct batadv_hard_iface_bat_v { |
| /** @elp_interval: time interval between two ELP transmissions */ |
| atomic_t elp_interval; |
| |
| /** @elp_seqno: current ELP sequence number */ |
| atomic_t elp_seqno; |
| |
| /** @elp_skb: base skb containing the ELP message to send */ |
| struct sk_buff *elp_skb; |
| |
| /** @elp_wq: workqueue used to schedule ELP transmissions */ |
| struct delayed_work elp_wq; |
| |
| /** @aggr_wq: workqueue used to transmit queued OGM packets */ |
| struct delayed_work aggr_wq; |
| |
| /** @aggr_list: queue for to be aggregated OGM packets */ |
| struct sk_buff_head aggr_list; |
| |
| /** @aggr_len: size of the OGM aggregate (excluding ethernet header) */ |
| unsigned int aggr_len; |
| |
| /** |
| * @throughput_override: throughput override to disable link |
| * auto-detection |
| */ |
| atomic_t throughput_override; |
| |
| /** @flags: interface specific flags */ |
| u8 flags; |
| }; |
| |
| /** |
| * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration |
| * of a batadv_hard_iface |
| */ |
| enum batadv_hard_iface_wifi_flags { |
| /** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */ |
| BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0), |
| |
| /** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */ |
| BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1), |
| |
| /** |
| * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device |
| */ |
| BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2), |
| |
| /** |
| * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi |
| * device |
| */ |
| BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3), |
| }; |
| |
| /** |
| * struct batadv_hard_iface - network device known to batman-adv |
| */ |
| struct batadv_hard_iface { |
| /** @list: list node for batadv_hardif_list */ |
| struct list_head list; |
| |
| /** @if_status: status of the interface for batman-adv */ |
| char if_status; |
| |
| /** |
| * @num_bcasts: number of payload re-broadcasts on this interface (ARQ) |
| */ |
| u8 num_bcasts; |
| |
| /** |
| * @wifi_flags: flags whether this is (directly or indirectly) a wifi |
| * interface |
| */ |
| u32 wifi_flags; |
| |
| /** @net_dev: pointer to the net_device */ |
| struct net_device *net_dev; |
| |
| /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */ |
| struct kobject *hardif_obj; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** |
| * @batman_adv_ptype: packet type describing packets that should be |
| * processed by batman-adv for this interface |
| */ |
| struct packet_type batman_adv_ptype; |
| |
| /** |
| * @soft_iface: the batman-adv interface which uses this network |
| * interface |
| */ |
| struct net_device *soft_iface; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| |
| /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */ |
| struct batadv_hard_iface_bat_iv bat_iv; |
| |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| /** @bat_v: per hard-interface B.A.T.M.A.N. V data */ |
| struct batadv_hard_iface_bat_v bat_v; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| /** |
| * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs |
| */ |
| struct dentry *debug_dir; |
| #endif |
| |
| /** |
| * @neigh_list: list of unique single hop neighbors via this interface |
| */ |
| struct hlist_head neigh_list; |
| |
| /** @neigh_list_lock: lock protecting neigh_list */ |
| spinlock_t neigh_list_lock; |
| }; |
| |
| /** |
| * struct batadv_orig_ifinfo - B.A.T.M.A.N. IV private orig_ifinfo members |
| */ |
| struct batadv_orig_ifinfo_bat_iv { |
| /** |
| * @bcast_own: bitfield which counts the number of our OGMs this |
| * orig_node rebroadcasted "back" to us (relative to last_real_seqno) |
| */ |
| DECLARE_BITMAP(bcast_own, BATADV_TQ_LOCAL_WINDOW_SIZE); |
| |
| /** @bcast_own_sum: sum of bcast_own */ |
| u8 bcast_own_sum; |
| }; |
| |
| /** |
| * struct batadv_orig_ifinfo - originator info per outgoing interface |
| */ |
| struct batadv_orig_ifinfo { |
| /** @list: list node for &batadv_orig_node.ifinfo_list */ |
| struct hlist_node list; |
| |
| /** @if_outgoing: pointer to outgoing hard-interface */ |
| struct batadv_hard_iface *if_outgoing; |
| |
| /** @router: router that should be used to reach this originator */ |
| struct batadv_neigh_node __rcu *router; |
| |
| /** @last_real_seqno: last and best known sequence number */ |
| u32 last_real_seqno; |
| |
| /** @last_ttl: ttl of last received packet */ |
| u8 last_ttl; |
| |
| /** @last_seqno_forwarded: seqno of the OGM which was forwarded last */ |
| u32 last_seqno_forwarded; |
| |
| /** @batman_seqno_reset: time when the batman seqno window was reset */ |
| unsigned long batman_seqno_reset; |
| |
| /** @bat_iv: B.A.T.M.A.N. IV private structure */ |
| struct batadv_orig_ifinfo_bat_iv bat_iv; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_frag_table_entry - head in the fragment buffer table |
| */ |
| struct batadv_frag_table_entry { |
| /** @fragment_list: head of list with fragments */ |
| struct hlist_head fragment_list; |
| |
| /** @lock: lock to protect the list of fragments */ |
| spinlock_t lock; |
| |
| /** @timestamp: time (jiffie) of last received fragment */ |
| unsigned long timestamp; |
| |
| /** @seqno: sequence number of the fragments in the list */ |
| u16 seqno; |
| |
| /** @size: accumulated size of packets in list */ |
| u16 size; |
| |
| /** @total_size: expected size of the assembled packet */ |
| u16 total_size; |
| }; |
| |
| /** |
| * struct batadv_frag_list_entry - entry in a list of fragments |
| */ |
| struct batadv_frag_list_entry { |
| /** @list: list node information */ |
| struct hlist_node list; |
| |
| /** @skb: fragment */ |
| struct sk_buff *skb; |
| |
| /** @no: fragment number in the set */ |
| u8 no; |
| }; |
| |
| /** |
| * struct batadv_vlan_tt - VLAN specific TT attributes |
| */ |
| struct batadv_vlan_tt { |
| /** @crc: CRC32 checksum of the entries belonging to this vlan */ |
| u32 crc; |
| |
| /** @num_entries: number of TT entries for this VLAN */ |
| atomic_t num_entries; |
| }; |
| |
| /** |
| * struct batadv_orig_node_vlan - VLAN specific data per orig_node |
| */ |
| struct batadv_orig_node_vlan { |
| /** @vid: the VLAN identifier */ |
| unsigned short vid; |
| |
| /** @tt: VLAN specific TT attributes */ |
| struct batadv_vlan_tt tt; |
| |
| /** @list: list node for &batadv_orig_node.vlan_list */ |
| struct hlist_node list; |
| |
| /** |
| * @refcount: number of context where this object is currently in use |
| */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in a RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members |
| */ |
| struct batadv_orig_bat_iv { |
| /** |
| * @ogm_cnt_lock: lock protecting &batadv_orig_ifinfo_bat_iv.bcast_own, |
| * &batadv_orig_ifinfo_bat_iv.bcast_own_sum, |
| * &batadv_neigh_ifinfo_bat_iv.bat_iv.real_bits and |
| * &batadv_neigh_ifinfo_bat_iv.real_packet_count |
| */ |
| spinlock_t ogm_cnt_lock; |
| }; |
| |
| /** |
| * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh |
| */ |
| struct batadv_orig_node { |
| /** @orig: originator ethernet address */ |
| u8 orig[ETH_ALEN]; |
| |
| /** @ifinfo_list: list for routers per outgoing interface */ |
| struct hlist_head ifinfo_list; |
| |
| /** |
| * @last_bonding_candidate: pointer to last ifinfo of last used router |
| */ |
| struct batadv_orig_ifinfo *last_bonding_candidate; |
| |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| /** @dat_addr: address of the orig node in the distributed hash */ |
| batadv_dat_addr_t dat_addr; |
| #endif |
| |
| /** @last_seen: time when last packet from this node was received */ |
| unsigned long last_seen; |
| |
| /** |
| * @bcast_seqno_reset: time when the broadcast seqno window was reset |
| */ |
| unsigned long bcast_seqno_reset; |
| |
| #ifdef CONFIG_BATMAN_ADV_MCAST |
| /** |
| * @mcast_handler_lock: synchronizes mcast-capability and -flag changes |
| */ |
| spinlock_t mcast_handler_lock; |
| |
| /** @mcast_flags: multicast flags announced by the orig node */ |
| u8 mcast_flags; |
| |
| /** |
| * @mcast_want_all_unsnoopables_node: a list node for the |
| * mcast.want_all_unsnoopables list |
| */ |
| struct hlist_node mcast_want_all_unsnoopables_node; |
| |
| /** |
| * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 |
| * list |
| */ |
| struct hlist_node mcast_want_all_ipv4_node; |
| /** |
| * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 |
| * list |
| */ |
| struct hlist_node mcast_want_all_ipv6_node; |
| |
| /** |
| * @mcast_want_all_rtr4_node: a list node for the mcast.want_all_rtr4 |
| * list |
| */ |
| struct hlist_node mcast_want_all_rtr4_node; |
| /** |
| * @mcast_want_all_rtr6_node: a list node for the mcast.want_all_rtr6 |
| * list |
| */ |
| struct hlist_node mcast_want_all_rtr6_node; |
| #endif |
| |
| /** @capabilities: announced capabilities of this originator */ |
| unsigned long capabilities; |
| |
| /** |
| * @capa_initialized: bitfield to remember whether a capability was |
| * initialized |
| */ |
| unsigned long capa_initialized; |
| |
| /** @last_ttvn: last seen translation table version number */ |
| atomic_t last_ttvn; |
| |
| /** @tt_buff: last tt changeset this node received from the orig node */ |
| unsigned char *tt_buff; |
| |
| /** |
| * @tt_buff_len: length of the last tt changeset this node received |
| * from the orig node |
| */ |
| s16 tt_buff_len; |
| |
| /** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */ |
| spinlock_t tt_buff_lock; |
| |
| /** |
| * @tt_lock: prevents from updating the table while reading it. Table |
| * update is made up by two operations (data structure update and |
| * metadata -CRC/TTVN-recalculation) and they have to be executed |
| * atomically in order to avoid another thread to read the |
| * table/metadata between those. |
| */ |
| spinlock_t tt_lock; |
| |
| /** |
| * @bcast_bits: bitfield containing the info which payload broadcast |
| * originated from this orig node this host already has seen (relative |
| * to last_bcast_seqno) |
| */ |
| DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); |
| |
| /** |
| * @last_bcast_seqno: last broadcast sequence number received by this |
| * host |
| */ |
| u32 last_bcast_seqno; |
| |
| /** |
| * @neigh_list: list of potential next hop neighbor towards this orig |
| * node |
| */ |
| struct hlist_head neigh_list; |
| |
| /** |
| * @neigh_list_lock: lock protecting neigh_list, ifinfo_list, |
| * last_bonding_candidate and router |
| */ |
| spinlock_t neigh_list_lock; |
| |
| /** @hash_entry: hlist node for &batadv_priv.orig_hash */ |
| struct hlist_node hash_entry; |
| |
| /** @bat_priv: pointer to soft_iface this orig node belongs to */ |
| struct batadv_priv *bat_priv; |
| |
| /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */ |
| spinlock_t bcast_seqno_lock; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| |
| #ifdef CONFIG_BATMAN_ADV_NC |
| /** @in_coding_list: list of nodes this orig can hear */ |
| struct list_head in_coding_list; |
| |
| /** @out_coding_list: list of nodes that can hear this orig */ |
| struct list_head out_coding_list; |
| |
| /** @in_coding_list_lock: protects in_coding_list */ |
| spinlock_t in_coding_list_lock; |
| |
| /** @out_coding_list_lock: protects out_coding_list */ |
| spinlock_t out_coding_list_lock; |
| #endif |
| |
| /** @fragments: array with heads for fragment chains */ |
| struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT]; |
| |
| /** |
| * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by |
| * the originator represented by this object |
| */ |
| struct hlist_head vlan_list; |
| |
| /** @vlan_list_lock: lock protecting vlan_list */ |
| spinlock_t vlan_list_lock; |
| |
| /** @bat_iv: B.A.T.M.A.N. IV private structure */ |
| struct batadv_orig_bat_iv bat_iv; |
| }; |
| |
| /** |
| * enum batadv_orig_capabilities - orig node capabilities |
| */ |
| enum batadv_orig_capabilities { |
| /** |
| * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table |
| * enabled |
| */ |
| BATADV_ORIG_CAPA_HAS_DAT, |
| |
| /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */ |
| BATADV_ORIG_CAPA_HAS_NC, |
| |
| /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */ |
| BATADV_ORIG_CAPA_HAS_TT, |
| |
| /** |
| * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability |
| * (= orig node announces a tvlv of type BATADV_TVLV_MCAST) |
| */ |
| BATADV_ORIG_CAPA_HAS_MCAST, |
| }; |
| |
| /** |
| * struct batadv_gw_node - structure for orig nodes announcing gw capabilities |
| */ |
| struct batadv_gw_node { |
| /** @list: list node for &batadv_priv_gw.list */ |
| struct hlist_node list; |
| |
| /** @orig_node: pointer to corresponding orig node */ |
| struct batadv_orig_node *orig_node; |
| |
| /** @bandwidth_down: advertised uplink download bandwidth */ |
| u32 bandwidth_down; |
| |
| /** @bandwidth_up: advertised uplink upload bandwidth */ |
| u32 bandwidth_up; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| DECLARE_EWMA(throughput, 10, 8) |
| |
| /** |
| * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor |
| * information |
| */ |
| struct batadv_hardif_neigh_node_bat_v { |
| /** @throughput: ewma link throughput towards this neighbor */ |
| struct ewma_throughput throughput; |
| |
| /** @elp_interval: time interval between two ELP transmissions */ |
| u32 elp_interval; |
| |
| /** @elp_latest_seqno: latest and best known ELP sequence number */ |
| u32 elp_latest_seqno; |
| |
| /** |
| * @last_unicast_tx: when the last unicast packet has been sent to this |
| * neighbor |
| */ |
| unsigned long last_unicast_tx; |
| |
| /** @metric_work: work queue callback item for metric update */ |
| struct work_struct metric_work; |
| }; |
| |
| /** |
| * struct batadv_hardif_neigh_node - unique neighbor per hard-interface |
| */ |
| struct batadv_hardif_neigh_node { |
| /** @list: list node for &batadv_hard_iface.neigh_list */ |
| struct hlist_node list; |
| |
| /** @addr: the MAC address of the neighboring interface */ |
| u8 addr[ETH_ALEN]; |
| |
| /** |
| * @orig: the address of the originator this neighbor node belongs to |
| */ |
| u8 orig[ETH_ALEN]; |
| |
| /** @if_incoming: pointer to incoming hard-interface */ |
| struct batadv_hard_iface *if_incoming; |
| |
| /** @last_seen: when last packet via this neighbor was received */ |
| unsigned long last_seen; |
| |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| /** @bat_v: B.A.T.M.A.N. V private data */ |
| struct batadv_hardif_neigh_node_bat_v bat_v; |
| #endif |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in a RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_neigh_node - structure for single hops neighbors |
| */ |
| struct batadv_neigh_node { |
| /** @list: list node for &batadv_orig_node.neigh_list */ |
| struct hlist_node list; |
| |
| /** @orig_node: pointer to corresponding orig_node */ |
| struct batadv_orig_node *orig_node; |
| |
| /** @addr: the MAC address of the neighboring interface */ |
| u8 addr[ETH_ALEN]; |
| |
| /** @ifinfo_list: list for routing metrics per outgoing interface */ |
| struct hlist_head ifinfo_list; |
| |
| /** @ifinfo_lock: lock protecting ifinfo_list and its members */ |
| spinlock_t ifinfo_lock; |
| |
| /** @if_incoming: pointer to incoming hard-interface */ |
| struct batadv_hard_iface *if_incoming; |
| |
| /** @last_seen: when last packet via this neighbor was received */ |
| unsigned long last_seen; |
| |
| /** @hardif_neigh: hardif_neigh of this neighbor */ |
| struct batadv_hardif_neigh_node *hardif_neigh; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing |
| * interface for B.A.T.M.A.N. IV |
| */ |
| struct batadv_neigh_ifinfo_bat_iv { |
| /** @tq_recv: ring buffer of received TQ values from this neigh node */ |
| u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE]; |
| |
| /** @tq_index: ring buffer index */ |
| u8 tq_index; |
| |
| /** |
| * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv) |
| */ |
| u8 tq_avg; |
| |
| /** |
| * @real_bits: bitfield containing the number of OGMs received from this |
| * neigh node (relative to orig_node->last_real_seqno) |
| */ |
| DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); |
| |
| /** @real_packet_count: counted result of real_bits */ |
| u8 real_packet_count; |
| }; |
| |
| /** |
| * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing |
| * interface for B.A.T.M.A.N. V |
| */ |
| struct batadv_neigh_ifinfo_bat_v { |
| /** |
| * @throughput: last throughput metric received from originator via this |
| * neigh |
| */ |
| u32 throughput; |
| |
| /** @last_seqno: last sequence number known for this neighbor */ |
| u32 last_seqno; |
| }; |
| |
| /** |
| * struct batadv_neigh_ifinfo - neighbor information per outgoing interface |
| */ |
| struct batadv_neigh_ifinfo { |
| /** @list: list node for &batadv_neigh_node.ifinfo_list */ |
| struct hlist_node list; |
| |
| /** @if_outgoing: pointer to outgoing hard-interface */ |
| struct batadv_hard_iface *if_outgoing; |
| |
| /** @bat_iv: B.A.T.M.A.N. IV private structure */ |
| struct batadv_neigh_ifinfo_bat_iv bat_iv; |
| |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| /** @bat_v: B.A.T.M.A.N. V private data */ |
| struct batadv_neigh_ifinfo_bat_v bat_v; |
| #endif |
| |
| /** @last_ttl: last received ttl from this neigh node */ |
| u8 last_ttl; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in a RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| |
| /** |
| * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression |
| */ |
| struct batadv_bcast_duplist_entry { |
| /** @orig: mac address of orig node orginating the broadcast */ |
| u8 orig[ETH_ALEN]; |
| |
| /** @crc: crc32 checksum of broadcast payload */ |
| __be32 crc; |
| |
| /** @entrytime: time when the broadcast packet was received */ |
| unsigned long entrytime; |
| }; |
| #endif |
| |
| /** |
| * enum batadv_counters - indices for traffic counters |
| */ |
| enum batadv_counters { |
| /** @BATADV_CNT_TX: transmitted payload traffic packet counter */ |
| BATADV_CNT_TX, |
| |
| /** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */ |
| BATADV_CNT_TX_BYTES, |
| |
| /** |
| * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet |
| * counter |
| */ |
| BATADV_CNT_TX_DROPPED, |
| |
| /** @BATADV_CNT_RX: received payload traffic packet counter */ |
| BATADV_CNT_RX, |
| |
| /** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */ |
| BATADV_CNT_RX_BYTES, |
| |
| /** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */ |
| BATADV_CNT_FORWARD, |
| |
| /** |
| * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter |
| */ |
| BATADV_CNT_FORWARD_BYTES, |
| |
| /** |
| * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet |
| * counter |
| */ |
| BATADV_CNT_MGMT_TX, |
| |
| /** |
| * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes |
| * counter |
| */ |
| BATADV_CNT_MGMT_TX_BYTES, |
| |
| /** |
| * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter |
| */ |
| BATADV_CNT_MGMT_RX, |
| |
| /** |
| * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes |
| * counter |
| */ |
| BATADV_CNT_MGMT_RX_BYTES, |
| |
| /** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */ |
| BATADV_CNT_FRAG_TX, |
| |
| /** |
| * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter |
| */ |
| BATADV_CNT_FRAG_TX_BYTES, |
| |
| /** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */ |
| BATADV_CNT_FRAG_RX, |
| |
| /** |
| * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter |
| */ |
| BATADV_CNT_FRAG_RX_BYTES, |
| |
| /** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */ |
| BATADV_CNT_FRAG_FWD, |
| |
| /** |
| * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter |
| */ |
| BATADV_CNT_FRAG_FWD_BYTES, |
| |
| /** |
| * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter |
| */ |
| BATADV_CNT_TT_REQUEST_TX, |
| |
| /** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */ |
| BATADV_CNT_TT_REQUEST_RX, |
| |
| /** |
| * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet |
| * counter |
| */ |
| BATADV_CNT_TT_RESPONSE_TX, |
| |
| /** |
| * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter |
| */ |
| BATADV_CNT_TT_RESPONSE_RX, |
| |
| /** |
| * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet |
| * counter |
| */ |
| BATADV_CNT_TT_ROAM_ADV_TX, |
| |
| /** |
| * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter |
| */ |
| BATADV_CNT_TT_ROAM_ADV_RX, |
| |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| /** |
| * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter |
| */ |
| BATADV_CNT_DAT_GET_TX, |
| |
| /** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */ |
| BATADV_CNT_DAT_GET_RX, |
| |
| /** |
| * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter |
| */ |
| BATADV_CNT_DAT_PUT_TX, |
| |
| /** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */ |
| BATADV_CNT_DAT_PUT_RX, |
| |
| /** |
| * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic |
| * packet counter |
| */ |
| BATADV_CNT_DAT_CACHED_REPLY_TX, |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_NC |
| /** |
| * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter |
| */ |
| BATADV_CNT_NC_CODE, |
| |
| /** |
| * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes |
| * counter |
| */ |
| BATADV_CNT_NC_CODE_BYTES, |
| |
| /** |
| * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet |
| * counter |
| */ |
| BATADV_CNT_NC_RECODE, |
| |
| /** |
| * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes |
| * counter |
| */ |
| BATADV_CNT_NC_RECODE_BYTES, |
| |
| /** |
| * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc |
| * decoding |
| */ |
| BATADV_CNT_NC_BUFFER, |
| |
| /** |
| * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter |
| */ |
| BATADV_CNT_NC_DECODE, |
| |
| /** |
| * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes |
| * counter |
| */ |
| BATADV_CNT_NC_DECODE_BYTES, |
| |
| /** |
| * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic |
| * packet counter |
| */ |
| BATADV_CNT_NC_DECODE_FAILED, |
| |
| /** |
| * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in |
| * promisc mode. |
| */ |
| BATADV_CNT_NC_SNIFFED, |
| #endif |
| |
| /** @BATADV_CNT_NUM: number of traffic counters */ |
| BATADV_CNT_NUM, |
| }; |
| |
| /** |
| * struct batadv_priv_tt - per mesh interface translation table data |
| */ |
| struct batadv_priv_tt { |
| /** @vn: translation table version number */ |
| atomic_t vn; |
| |
| /** |
| * @ogm_append_cnt: counter of number of OGMs containing the local tt |
| * diff |
| */ |
| atomic_t ogm_append_cnt; |
| |
| /** @local_changes: changes registered in an originator interval */ |
| atomic_t local_changes; |
| |
| /** |
| * @changes_list: tracks tt local changes within an originator interval |
| */ |
| struct list_head changes_list; |
| |
| /** @local_hash: local translation table hash table */ |
| struct batadv_hashtable *local_hash; |
| |
| /** @global_hash: global translation table hash table */ |
| struct batadv_hashtable *global_hash; |
| |
| /** @req_list: list of pending & unanswered tt_requests */ |
| struct hlist_head req_list; |
| |
| /** |
| * @roam_list: list of the last roaming events of each client limiting |
| * the number of roaming events to avoid route flapping |
| */ |
| struct list_head roam_list; |
| |
| /** @changes_list_lock: lock protecting changes_list */ |
| spinlock_t changes_list_lock; |
| |
| /** @req_list_lock: lock protecting req_list */ |
| spinlock_t req_list_lock; |
| |
| /** @roam_list_lock: lock protecting roam_list */ |
| spinlock_t roam_list_lock; |
| |
| /** @last_changeset: last tt changeset this host has generated */ |
| unsigned char *last_changeset; |
| |
| /** |
| * @last_changeset_len: length of last tt changeset this host has |
| * generated |
| */ |
| s16 last_changeset_len; |
| |
| /** |
| * @last_changeset_lock: lock protecting last_changeset & |
| * last_changeset_len |
| */ |
| spinlock_t last_changeset_lock; |
| |
| /** |
| * @commit_lock: prevents from executing a local TT commit while reading |
| * the local table. The local TT commit is made up by two operations |
| * (data structure update and metadata -CRC/TTVN- recalculation) and |
| * they have to be executed atomically in order to avoid another thread |
| * to read the table/metadata between those. |
| */ |
| spinlock_t commit_lock; |
| |
| /** @work: work queue callback item for translation table purging */ |
| struct delayed_work work; |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| |
| /** |
| * struct batadv_priv_bla - per mesh interface bridge loope avoidance data |
| */ |
| struct batadv_priv_bla { |
| /** @num_requests: number of bla requests in flight */ |
| atomic_t num_requests; |
| |
| /** |
| * @claim_hash: hash table containing mesh nodes this host has claimed |
| */ |
| struct batadv_hashtable *claim_hash; |
| |
| /** |
| * @backbone_hash: hash table containing all detected backbone gateways |
| */ |
| struct batadv_hashtable *backbone_hash; |
| |
| /** @loopdetect_addr: MAC address used for own loopdetection frames */ |
| u8 loopdetect_addr[ETH_ALEN]; |
| |
| /** |
| * @loopdetect_lasttime: time when the loopdetection frames were sent |
| */ |
| unsigned long loopdetect_lasttime; |
| |
| /** |
| * @loopdetect_next: how many periods to wait for the next loopdetect |
| * process |
| */ |
| atomic_t loopdetect_next; |
| |
| /** |
| * @bcast_duplist: recently received broadcast packets array (for |
| * broadcast duplicate suppression) |
| */ |
| struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE]; |
| |
| /** |
| * @bcast_duplist_curr: index of last broadcast packet added to |
| * bcast_duplist |
| */ |
| int bcast_duplist_curr; |
| |
| /** |
| * @bcast_duplist_lock: lock protecting bcast_duplist & |
| * bcast_duplist_curr |
| */ |
| spinlock_t bcast_duplist_lock; |
| |
| /** @claim_dest: local claim data (e.g. claim group) */ |
| struct batadv_bla_claim_dst claim_dest; |
| |
| /** @work: work queue callback item for cleanups & bla announcements */ |
| struct delayed_work work; |
| }; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUG |
| |
| /** |
| * struct batadv_priv_debug_log - debug logging data |
| */ |
| struct batadv_priv_debug_log { |
| /** @log_buff: buffer holding the logs (ring bufer) */ |
| char log_buff[BATADV_LOG_BUF_LEN]; |
| |
| /** @log_start: index of next character to read */ |
| unsigned long log_start; |
| |
| /** @log_end: index of next character to write */ |
| unsigned long log_end; |
| |
| /** @lock: lock protecting log_buff, log_start & log_end */ |
| spinlock_t lock; |
| |
| /** @queue_wait: log reader's wait queue */ |
| wait_queue_head_t queue_wait; |
| }; |
| #endif |
| |
| /** |
| * struct batadv_priv_gw - per mesh interface gateway data |
| */ |
| struct batadv_priv_gw { |
| /** @gateway_list: list of available gateway nodes */ |
| struct hlist_head gateway_list; |
| |
| /** @list_lock: lock protecting gateway_list, curr_gw, generation */ |
| spinlock_t list_lock; |
| |
| /** @curr_gw: pointer to currently selected gateway node */ |
| struct batadv_gw_node __rcu *curr_gw; |
| |
| /** @generation: current (generation) sequence number */ |
| unsigned int generation; |
| |
| /** |
| * @mode: gateway operation: off, client or server (see batadv_gw_modes) |
| */ |
| atomic_t mode; |
| |
| /** @sel_class: gateway selection class (applies if gw_mode client) */ |
| atomic_t sel_class; |
| |
| /** |
| * @bandwidth_down: advertised uplink download bandwidth (if gw_mode |
| * server) |
| */ |
| atomic_t bandwidth_down; |
| |
| /** |
| * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server) |
| */ |
| atomic_t bandwidth_up; |
| |
| /** @reselect: bool indicating a gateway re-selection is in progress */ |
| atomic_t reselect; |
| }; |
| |
| /** |
| * struct batadv_priv_tvlv - per mesh interface tvlv data |
| */ |
| struct batadv_priv_tvlv { |
| /** |
| * @container_list: list of registered tvlv containers to be sent with |
| * each OGM |
| */ |
| struct hlist_head container_list; |
| |
| /** @handler_list: list of the various tvlv content handlers */ |
| struct hlist_head handler_list; |
| |
| /** @container_list_lock: protects tvlv container list access */ |
| spinlock_t container_list_lock; |
| |
| /** @handler_list_lock: protects handler list access */ |
| spinlock_t handler_list_lock; |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| |
| /** |
| * struct batadv_priv_dat - per mesh interface DAT private data |
| */ |
| struct batadv_priv_dat { |
| /** @addr: node DAT address */ |
| batadv_dat_addr_t addr; |
| |
| /** @hash: hashtable representing the local ARP cache */ |
| struct batadv_hashtable *hash; |
| |
| /** @work: work queue callback item for cache purging */ |
| struct delayed_work work; |
| }; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_MCAST |
| /** |
| * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged |
| */ |
| struct batadv_mcast_querier_state { |
| /** @exists: whether a querier exists in the mesh */ |
| unsigned char exists:1; |
| |
| /** |
| * @shadowing: if a querier exists, whether it is potentially shadowing |
| * multicast listeners (i.e. querier is behind our own bridge segment) |
| */ |
| unsigned char shadowing:1; |
| }; |
| |
| /** |
| * struct batadv_mcast_mla_flags - flags for the querier, bridge and tvlv state |
| */ |
| struct batadv_mcast_mla_flags { |
| /** @querier_ipv4: the current state of an IGMP querier in the mesh */ |
| struct batadv_mcast_querier_state querier_ipv4; |
| |
| /** @querier_ipv6: the current state of an MLD querier in the mesh */ |
| struct batadv_mcast_querier_state querier_ipv6; |
| |
| /** @enabled: whether the multicast tvlv is currently enabled */ |
| unsigned char enabled:1; |
| |
| /** @bridged: whether the soft interface has a bridge on top */ |
| unsigned char bridged:1; |
| |
| /** @tvlv_flags: the flags we have last sent in our mcast tvlv */ |
| u8 tvlv_flags; |
| }; |
| |
| /** |
| * struct batadv_priv_mcast - per mesh interface mcast data |
| */ |
| struct batadv_priv_mcast { |
| /** |
| * @mla_list: list of multicast addresses we are currently announcing |
| * via TT |
| */ |
| struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */ |
| |
| /** |
| * @want_all_unsnoopables_list: a list of orig_nodes wanting all |
| * unsnoopable multicast traffic |
| */ |
| struct hlist_head want_all_unsnoopables_list; |
| |
| /** |
| * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast |
| * traffic |
| */ |
| struct hlist_head want_all_ipv4_list; |
| |
| /** |
| * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast |
| * traffic |
| */ |
| struct hlist_head want_all_ipv6_list; |
| |
| /** |
| * @want_all_rtr4_list: a list of orig_nodes wanting all routable IPv4 |
| * multicast traffic |
| */ |
| struct hlist_head want_all_rtr4_list; |
| |
| /** |
| * @want_all_rtr6_list: a list of orig_nodes wanting all routable IPv6 |
| * multicast traffic |
| */ |
| struct hlist_head want_all_rtr6_list; |
| |
| /** |
| * @mla_flags: flags for the querier, bridge and tvlv state |
| */ |
| struct batadv_mcast_mla_flags mla_flags; |
| |
| /** |
| * @mla_lock: a lock protecting mla_list and mla_flags |
| */ |
| spinlock_t mla_lock; |
| |
| /** |
| * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP |
| * traffic |
| */ |
| atomic_t num_want_all_unsnoopables; |
| |
| /** @num_want_all_ipv4: counter for items in want_all_ipv4_list */ |
| atomic_t num_want_all_ipv4; |
| |
| /** @num_want_all_ipv6: counter for items in want_all_ipv6_list */ |
| atomic_t num_want_all_ipv6; |
| |
| /** @num_want_all_rtr4: counter for items in want_all_rtr4_list */ |
| atomic_t num_want_all_rtr4; |
| |
| /** @num_want_all_rtr6: counter for items in want_all_rtr6_list */ |
| atomic_t num_want_all_rtr6; |
| |
| /** |
| * @want_lists_lock: lock for protecting modifications to mcasts |
| * want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked) |
| */ |
| spinlock_t want_lists_lock; |
| |
| /** @work: work queue callback item for multicast TT and TVLV updates */ |
| struct delayed_work work; |
| }; |
| #endif |
| |
| /** |
| * struct batadv_priv_nc - per mesh interface network coding private data |
| */ |
| struct batadv_priv_nc { |
| /** @work: work queue callback item for cleanup */ |
| struct delayed_work work; |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| /** |
| * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs |
| */ |
| struct dentry *debug_dir; |
| #endif |
| |
| /** |
| * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq |
| */ |
| u8 min_tq; |
| |
| /** |
| * @max_fwd_delay: maximum packet forward delay to allow coding of |
| * packets |
| */ |
| u32 max_fwd_delay; |
| |
| /** |
| * @max_buffer_time: buffer time for sniffed packets used to decoding |
| */ |
| u32 max_buffer_time; |
| |
| /** |
| * @timestamp_fwd_flush: timestamp of last forward packet queue flush |
| */ |
| unsigned long timestamp_fwd_flush; |
| |
| /** |
| * @timestamp_sniffed_purge: timestamp of last sniffed packet queue |
| * purge |
| */ |
| unsigned long timestamp_sniffed_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 |
| */ |
| struct batadv_hashtable *coding_hash; |
| |
| /** |
| * @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_hashtable *decoding_hash; |
| }; |
| |
| /** |
| * struct batadv_tp_unacked - unacked packet meta-information |
| * |
| * This struct is supposed to represent a buffer unacked packet. However, since |
| * the purpose of the TP meter is to count the traffic only, there is no need to |
| * store the entire sk_buff, the starting offset and the length are enough |
| */ |
| struct batadv_tp_unacked { |
| /** @seqno: seqno of the unacked packet */ |
| u32 seqno; |
| |
| /** @len: length of the packet */ |
| u16 len; |
| |
| /** @list: list node for &batadv_tp_vars.unacked_list */ |
| struct list_head list; |
| }; |
| |
| /** |
| * enum batadv_tp_meter_role - Modus in tp meter session |
| */ |
| enum batadv_tp_meter_role { |
| /** @BATADV_TP_RECEIVER: Initialized as receiver */ |
| BATADV_TP_RECEIVER, |
| |
| /** @BATADV_TP_SENDER: Initialized as sender */ |
| BATADV_TP_SENDER |
| }; |
| |
| /** |
| * struct batadv_tp_vars - tp meter private variables per session |
| */ |
| struct batadv_tp_vars { |
| /** @list: list node for &bat_priv.tp_list */ |
| struct hlist_node list; |
| |
| /** @timer: timer for ack (receiver) and retry (sender) */ |
| struct timer_list timer; |
| |
| /** @bat_priv: pointer to the mesh object */ |
| struct batadv_priv *bat_priv; |
| |
| /** @start_time: start time in jiffies */ |
| unsigned long start_time; |
| |
| /** @other_end: mac address of remote */ |
| u8 other_end[ETH_ALEN]; |
| |
| /** @role: receiver/sender modi */ |
| enum batadv_tp_meter_role role; |
| |
| /** @sending: sending binary semaphore: 1 if sending, 0 is not */ |
| atomic_t sending; |
| |
| /** @reason: reason for a stopped session */ |
| enum batadv_tp_meter_reason reason; |
| |
| /** @finish_work: work item for the finishing procedure */ |
| struct delayed_work finish_work; |
| |
| /** @test_length: test length in milliseconds */ |
| u32 test_length; |
| |
| /** @session: TP session identifier */ |
| u8 session[2]; |
| |
| /** @icmp_uid: local ICMP "socket" index */ |
| u8 icmp_uid; |
| |
| /* sender variables */ |
| |
| /** @dec_cwnd: decimal part of the cwnd used during linear growth */ |
| u16 dec_cwnd; |
| |
| /** @cwnd: current size of the congestion window */ |
| u32 cwnd; |
| |
| /** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */ |
| spinlock_t cwnd_lock; |
| |
| /** |
| * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the |
| * connection switches to the Congestion Avoidance state |
| */ |
| u32 ss_threshold; |
| |
| /** @last_acked: last acked byte */ |
| atomic_t last_acked; |
| |
| /** @last_sent: last sent byte, not yet acked */ |
| u32 last_sent; |
| |
| /** @tot_sent: amount of data sent/ACKed so far */ |
| atomic64_t tot_sent; |
| |
| /** @dup_acks: duplicate ACKs counter */ |
| atomic_t dup_acks; |
| |
| /** @fast_recovery: true if in Fast Recovery mode */ |
| unsigned char fast_recovery:1; |
| |
| /** @recover: last sent seqno when entering Fast Recovery */ |
| u32 recover; |
| |
| /** @rto: sender timeout */ |
| u32 rto; |
| |
| /** @srtt: smoothed RTT scaled by 2^3 */ |
| u32 srtt; |
| |
| /** @rttvar: RTT variation scaled by 2^2 */ |
| u32 rttvar; |
| |
| /** |
| * @more_bytes: waiting queue anchor when waiting for more ack/retry |
| * timeout |
| */ |
| wait_queue_head_t more_bytes; |
| |
| /** @prerandom_offset: offset inside the prerandom buffer */ |
| u32 prerandom_offset; |
| |
| /** @prerandom_lock: spinlock protecting access to prerandom_offset */ |
| spinlock_t prerandom_lock; |
| |
| /* receiver variables */ |
| |
| /** @last_recv: last in-order received packet */ |
| u32 last_recv; |
| |
| /** @unacked_list: list of unacked packets (meta-info only) */ |
| struct list_head unacked_list; |
| |
| /** @unacked_lock: protect unacked_list */ |
| spinlock_t unacked_lock; |
| |
| /** @last_recv_time: time time (jiffies) a msg was received */ |
| unsigned long last_recv_time; |
| |
| /** @refcount: number of context where the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_softif_vlan - per VLAN attributes set |
| */ |
| struct batadv_softif_vlan { |
| /** @bat_priv: pointer to the mesh object */ |
| struct batadv_priv *bat_priv; |
| |
| /** @vid: VLAN identifier */ |
| unsigned short vid; |
| |
| /** @kobj: kobject for sysfs vlan subdirectory */ |
| struct kobject *kobj; |
| |
| /** @ap_isolation: AP isolation state */ |
| atomic_t ap_isolation; /* boolean */ |
| |
| /** @tt: TT private attributes (VLAN specific) */ |
| struct batadv_vlan_tt tt; |
| |
| /** @list: list node for &bat_priv.softif_vlan_list */ |
| struct hlist_node list; |
| |
| /** |
| * @refcount: number of context where this object is currently in use |
| */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in a RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data |
| */ |
| struct batadv_priv_bat_v { |
| /** @ogm_buff: buffer holding the OGM packet */ |
| unsigned char *ogm_buff; |
| |
| /** @ogm_buff_len: length of the OGM packet buffer */ |
| int ogm_buff_len; |
| |
| /** @ogm_seqno: OGM sequence number - used to identify each OGM */ |
| atomic_t ogm_seqno; |
| |
| /** @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len */ |
| struct mutex ogm_buff_mutex; |
| |
| /** @ogm_wq: workqueue used to schedule OGM transmissions */ |
| struct delayed_work ogm_wq; |
| }; |
| |
| /** |
| * struct batadv_priv - per mesh interface data |
| */ |
| struct batadv_priv { |
| /** |
| * @mesh_state: current status of the mesh |
| * (inactive/active/deactivating) |
| */ |
| atomic_t mesh_state; |
| |
| /** @soft_iface: net device which holds this struct as private data */ |
| struct net_device *soft_iface; |
| |
| /** |
| * @bat_counters: mesh internal traffic statistic counters (see |
| * batadv_counters) |
| */ |
| u64 __percpu *bat_counters; /* Per cpu counters */ |
| |
| /** |
| * @aggregated_ogms: bool indicating whether OGM aggregation is enabled |
| */ |
| atomic_t aggregated_ogms; |
| |
| /** @bonding: bool indicating whether traffic bonding is enabled */ |
| atomic_t bonding; |
| |
| /** |
| * @fragmentation: bool indicating whether traffic fragmentation is |
| * enabled |
| */ |
| atomic_t fragmentation; |
| |
| /** |
| * @packet_size_max: max packet size that can be transmitted via |
| * multiple fragmented skbs or a single frame if fragmentation is |
| * disabled |
| */ |
| atomic_t packet_size_max; |
| |
| /** |
| * @frag_seqno: incremental counter to identify chains of egress |
| * fragments |
| */ |
| atomic_t frag_seqno; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| /** |
| * @bridge_loop_avoidance: bool indicating whether bridge loop |
| * avoidance is enabled |
| */ |
| atomic_t bridge_loop_avoidance; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| /** |
| * @distributed_arp_table: bool indicating whether distributed ARP table |
| * is enabled |
| */ |
| atomic_t distributed_arp_table; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_MCAST |
| /** |
| * @multicast_mode: Enable or disable multicast optimizations on this |
| * node's sender/originating side |
| */ |
| atomic_t multicast_mode; |
| |
| /** |
| * @multicast_fanout: Maximum number of packet copies to generate for a |
| * multicast-to-unicast conversion |
| */ |
| atomic_t multicast_fanout; |
| #endif |
| |
| /** @orig_interval: OGM broadcast interval in milliseconds */ |
| atomic_t orig_interval; |
| |
| /** |
| * @hop_penalty: penalty which will be applied to an OGM's tq-field on |
| * every hop |
| */ |
| atomic_t hop_penalty; |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUG |
| /** @log_level: configured log level (see batadv_dbg_level) */ |
| atomic_t log_level; |
| #endif |
| |
| /** |
| * @isolation_mark: the skb->mark value used to match packets for AP |
| * isolation |
| */ |
| u32 isolation_mark; |
| |
| /** |
| * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be |
| * used for the isolation mark |
| */ |
| u32 isolation_mark_mask; |
| |
| /** @bcast_seqno: last sent broadcast packet sequence number */ |
| atomic_t bcast_seqno; |
| |
| /** |
| * @bcast_queue_left: number of remaining buffered broadcast packet |
| * slots |
| */ |
| atomic_t bcast_queue_left; |
| |
| /** @batman_queue_left: number of remaining OGM packet slots */ |
| atomic_t batman_queue_left; |
| |
| /** @mesh_obj: kobject for sysfs mesh subdirectory */ |
| struct kobject *mesh_obj; |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| /** @debug_dir: dentry for debugfs batman-adv subdirectory */ |
| struct dentry *debug_dir; |
| #endif |
| |
| /** @forw_bat_list: list of aggregated OGMs that will be forwarded */ |
| struct hlist_head forw_bat_list; |
| |
| /** |
| * @forw_bcast_list: list of broadcast packets that will be |
| * rebroadcasted |
| */ |
| struct hlist_head forw_bcast_list; |
| |
| /** @tp_list: list of tp sessions */ |
| struct hlist_head tp_list; |
| |
| /** @tp_num: number of currently active tp sessions */ |
| struct batadv_hashtable *orig_hash; |
| |
| /** @orig_hash: hash table containing mesh participants (orig nodes) */ |
| spinlock_t forw_bat_list_lock; |
| |
| /** @forw_bat_list_lock: lock protecting forw_bat_list */ |
| spinlock_t forw_bcast_list_lock; |
| |
| /** @forw_bcast_list_lock: lock protecting forw_bcast_list */ |
| spinlock_t tp_list_lock; |
| |
| /** @tp_list_lock: spinlock protecting @tp_list */ |
| atomic_t tp_num; |
| |
| /** @orig_work: work queue callback item for orig node purging */ |
| struct delayed_work orig_work; |
| |
| /** |
| * @primary_if: one of the hard-interfaces assigned to this mesh |
| * interface becomes the primary interface |
| */ |
| struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */ |
| |
| /** @algo_ops: routing algorithm used by this mesh interface */ |
| struct batadv_algo_ops *algo_ops; |
| |
| /** |
| * @softif_vlan_list: a list of softif_vlan structs, one per VLAN |
| * created on top of the mesh interface represented by this object |
| */ |
| struct hlist_head softif_vlan_list; |
| |
| /** @softif_vlan_list_lock: lock protecting softif_vlan_list */ |
| spinlock_t softif_vlan_list_lock; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| /** @bla: bridge loope avoidance data */ |
| struct batadv_priv_bla bla; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUG |
| /** @debug_log: holding debug logging relevant data */ |
| struct batadv_priv_debug_log *debug_log; |
| #endif |
| |
| /** @gw: gateway data */ |
| struct batadv_priv_gw gw; |
| |
| /** @tt: translation table data */ |
| struct batadv_priv_tt tt; |
| |
| /** @tvlv: type-version-length-value data */ |
| struct batadv_priv_tvlv tvlv; |
| |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| /** @dat: distributed arp table data */ |
| struct batadv_priv_dat dat; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_MCAST |
| /** @mcast: multicast data */ |
| struct batadv_priv_mcast mcast; |
| #endif |
| |
| #ifdef CONFIG_BATMAN_ADV_NC |
| /** |
| * @network_coding: bool indicating whether network coding is enabled |
| */ |
| atomic_t network_coding; |
| |
| /** @nc: network coding data */ |
| struct batadv_priv_nc nc; |
| #endif /* CONFIG_BATMAN_ADV_NC */ |
| |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */ |
| struct batadv_priv_bat_v bat_v; |
| #endif |
| }; |
| |
| /** |
| * struct batadv_socket_client - layer2 icmp socket client data |
| */ |
| struct batadv_socket_client { |
| /** |
| * @queue_list: packet queue for packets destined for this socket client |
| */ |
| struct list_head queue_list; |
| |
| /** @queue_len: number of packets in the packet queue (queue_list) */ |
| unsigned int queue_len; |
| |
| /** @index: socket client's index in the batadv_socket_client_hash */ |
| unsigned char index; |
| |
| /** @lock: lock protecting queue_list, queue_len & index */ |
| spinlock_t lock; |
| |
| /** @queue_wait: socket client's wait queue */ |
| wait_queue_head_t queue_wait; |
| |
| /** @bat_priv: pointer to soft_iface this client belongs to */ |
| struct batadv_priv *bat_priv; |
| }; |
| |
| /** |
| * struct batadv_socket_packet - layer2 icmp packet for socket client |
| */ |
| struct batadv_socket_packet { |
| /** @list: list node for &batadv_socket_client.queue_list */ |
| struct list_head list; |
| |
| /** @icmp_len: size of the layer2 icmp packet */ |
| size_t icmp_len; |
| |
| /** @icmp_packet: layer2 icmp packet */ |
| u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE]; |
| }; |
| |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| |
| /** |
| * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN |
| */ |
| struct batadv_bla_backbone_gw { |
| /** |
| * @orig: originator address of backbone node (mac address of primary |
| * iface) |
| */ |
| u8 orig[ETH_ALEN]; |
| |
| /** @vid: vlan id this gateway was detected on */ |
| unsigned short vid; |
| |
| /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */ |
| struct hlist_node hash_entry; |
| |
| /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */ |
| struct batadv_priv *bat_priv; |
| |
| /** @lasttime: last time we heard of this backbone gw */ |
| unsigned long lasttime; |
| |
| /** |
| * @wait_periods: grace time for bridge forward delays and bla group |
| * forming at bootup phase - no bcast traffic is formwared until it has |
| * elapsed |
| */ |
| atomic_t wait_periods; |
| |
| /** |
| * @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 |
| */ |
| atomic_t request_sent; |
| |
| /** @crc: crc16 checksum over all claims */ |
| u16 crc; |
| |
| /** @crc_lock: lock protecting crc */ |
| spinlock_t crc_lock; |
| |
| /** @report_work: work struct for reporting detected loops */ |
| struct work_struct report_work; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_bla_claim - claimed non-mesh client structure |
| */ |
| struct batadv_bla_claim { |
| /** @addr: mac address of claimed non-mesh client */ |
| u8 addr[ETH_ALEN]; |
| |
| /** @vid: vlan id this client was detected on */ |
| unsigned short vid; |
| |
| /** @backbone_gw: pointer to backbone gw claiming this client */ |
| struct batadv_bla_backbone_gw *backbone_gw; |
| |
| /** @backbone_lock: lock protecting backbone_gw pointer */ |
| spinlock_t backbone_lock; |
| |
| /** @lasttime: last time we heard of claim (locals only) */ |
| unsigned long lasttime; |
| |
| /** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */ |
| struct hlist_node hash_entry; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct rcu_head rcu; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct kref refcount; |
| }; |
| #endif |
| |
| /** |
| * struct batadv_tt_common_entry - tt local & tt global common data |
| */ |
| struct batadv_tt_common_entry { |
| /** @addr: mac address of non-mesh client */ |
| u8 addr[ETH_ALEN]; |
| |
| /** @vid: VLAN identifier */ |
| unsigned short vid; |
| |
| /** |
| * @hash_entry: hlist node for &batadv_priv_tt.local_hash or for |
| * &batadv_priv_tt.global_hash |
| */ |
| struct hlist_node hash_entry; |
| |
| /** @flags: various state handling flags (see batadv_tt_client_flags) */ |
| u16 flags; |
| |
| /** @added_at: timestamp used for purging stale tt common entries */ |
| unsigned long added_at; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_tt_local_entry - translation table local entry data |
| */ |
| struct batadv_tt_local_entry { |
| /** @common: general translation table data */ |
| struct batadv_tt_common_entry common; |
| |
| /** @last_seen: timestamp used for purging stale tt local entries */ |
| unsigned long last_seen; |
| |
| /** @vlan: soft-interface vlan of the entry */ |
| struct batadv_softif_vlan *vlan; |
| }; |
| |
| /** |
| * struct batadv_tt_global_entry - translation table global entry data |
| */ |
| struct batadv_tt_global_entry { |
| /** @common: general translation table data */ |
| struct batadv_tt_common_entry common; |
| |
| /** @orig_list: list of orig nodes announcing this non-mesh client */ |
| struct hlist_head orig_list; |
| |
| /** @orig_list_count: number of items in the orig_list */ |
| atomic_t orig_list_count; |
| |
| /** @list_lock: lock protecting orig_list */ |
| spinlock_t list_lock; |
| |
| /** @roam_at: time at which TT_GLOBAL_ROAM was set */ |
| unsigned long roam_at; |
| }; |
| |
| /** |
| * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client |
| */ |
| struct batadv_tt_orig_list_entry { |
| /** @orig_node: pointer to orig node announcing this non-mesh client */ |
| struct batadv_orig_node *orig_node; |
| |
| /** |
| * @ttvn: translation table version number which added the non-mesh |
| * client |
| */ |
| u8 ttvn; |
| |
| /** @flags: per orig entry TT sync flags */ |
| u8 flags; |
| |
| /** @list: list node for &batadv_tt_global_entry.orig_list */ |
| struct hlist_node list; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_tt_change_node - structure for tt changes occurred |
| */ |
| struct batadv_tt_change_node { |
| /** @list: list node for &batadv_priv_tt.changes_list */ |
| struct list_head list; |
| |
| /** @change: holds the actual translation table diff data */ |
| struct batadv_tvlv_tt_change change; |
| }; |
| |
| /** |
| * struct batadv_tt_req_node - data to keep track of the tt requests in flight |
| */ |
| struct batadv_tt_req_node { |
| /** |
| * @addr: mac address address of the originator this request was sent to |
| */ |
| u8 addr[ETH_ALEN]; |
| |
| /** @issued_at: timestamp used for purging stale tt requests */ |
| unsigned long issued_at; |
| |
| /** @refcount: number of contexts the object is used by */ |
| struct kref refcount; |
| |
| /** @list: list node for &batadv_priv_tt.req_list */ |
| struct hlist_node list; |
| }; |
| |
| /** |
| * struct batadv_tt_roam_node - roaming client data |
| */ |
| struct batadv_tt_roam_node { |
| /** @addr: mac address of the client in the roaming phase */ |
| u8 addr[ETH_ALEN]; |
| |
| /** |
| * @counter: number of allowed roaming events per client within a single |
| * OGM interval (changes are committed with each OGM) |
| */ |
| atomic_t counter; |
| |
| /** |
| * @first_time: timestamp used for purging stale roaming node entries |
| */ |
| unsigned long first_time; |
| |
| /** @list: list node for &batadv_priv_tt.roam_list */ |
| struct list_head list; |
| }; |
| |
| /** |
| * struct batadv_nc_node - network coding node |
| */ |
| struct batadv_nc_node { |
| /** @list: next and prev pointer for the list handling */ |
| struct list_head list; |
| |
| /** @addr: the node's mac address */ |
| u8 addr[ETH_ALEN]; |
| |
| /** @refcount: number of contexts the object is used by */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| |
| /** @orig_node: pointer to corresponding orig node struct */ |
| struct batadv_orig_node *orig_node; |
| |
| /** @last_seen: timestamp of last ogm received from this node */ |
| unsigned long last_seen; |
| }; |
| |
| /** |
| * struct batadv_nc_path - network coding path |
| */ |
| struct batadv_nc_path { |
| /** @hash_entry: next and prev pointer for the list handling */ |
| struct hlist_node hash_entry; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| |
| /** @refcount: number of contexts the object is used by */ |
| struct kref refcount; |
| |
| /** @packet_list: list of buffered packets for this path */ |
| struct list_head packet_list; |
| |
| /** @packet_list_lock: access lock for packet list */ |
| spinlock_t packet_list_lock; |
| |
| /** @next_hop: next hop (destination) of path */ |
| u8 next_hop[ETH_ALEN]; |
| |
| /** @prev_hop: previous hop (source) of path */ |
| u8 prev_hop[ETH_ALEN]; |
| |
| /** @last_valid: timestamp for last validation of path */ |
| unsigned long last_valid; |
| }; |
| |
| /** |
| * struct batadv_nc_packet - network coding packet used when coding and |
| * decoding packets |
| */ |
| struct batadv_nc_packet { |
| /** @list: next and prev pointer for the list handling */ |
| struct list_head list; |
| |
| /** @packet_id: crc32 checksum of skb data */ |
| __be32 packet_id; |
| |
| /** |
| * @timestamp: field containing the info when the packet was added to |
| * path |
| */ |
| unsigned long timestamp; |
| |
| /** @neigh_node: pointer to original next hop neighbor of skb */ |
| struct batadv_neigh_node *neigh_node; |
| |
| /** @skb: skb which can be encoded or used for decoding */ |
| struct sk_buff *skb; |
| |
| /** @nc_path: pointer to path this nc packet is attached to */ |
| struct batadv_nc_path *nc_path; |
| }; |
| |
| /** |
| * struct batadv_skb_cb - control buffer structure used to store private data |
| * relevant to batman-adv in the skb->cb buffer in skbs. |
| */ |
| struct batadv_skb_cb { |
| /** |
| * @decoded: Marks a skb as decoded, which is checked when searching for |
| * coding opportunities in network-coding.c |
| */ |
| unsigned char decoded:1; |
| |
| /** @num_bcasts: Counter for broadcast packet retransmissions */ |
| unsigned char num_bcasts; |
| }; |
| |
| /** |
| * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded |
| */ |
| struct batadv_forw_packet { |
| /** |
| * @list: list node for &batadv_priv.forw.bcast_list and |
| * &batadv_priv.forw.bat_list |
| */ |
| struct hlist_node list; |
| |
| /** @cleanup_list: list node for purging functions */ |
| struct hlist_node cleanup_list; |
| |
| /** @send_time: execution time for delayed_work (packet sending) */ |
| unsigned long send_time; |
| |
| /** |
| * @own: bool for locally generated packets (local OGMs are re-scheduled |
| * after sending) |
| */ |
| u8 own; |
| |
| /** @skb: bcast packet's skb buffer */ |
| struct sk_buff *skb; |
| |
| /** @packet_len: size of aggregated OGM packet inside the skb buffer */ |
| u16 packet_len; |
| |
| /** @direct_link_flags: direct link flags for aggregated OGM packets */ |
| u32 direct_link_flags; |
| |
| /** @num_packets: counter for aggregated OGMv1 packets */ |
| u8 num_packets; |
| |
| /** @delayed_work: work queue callback item for packet sending */ |
| struct delayed_work delayed_work; |
| |
| /** |
| * @if_incoming: pointer to incoming hard-iface or primary iface if |
| * locally generated packet |
| */ |
| struct batadv_hard_iface *if_incoming; |
| |
| /** |
| * @if_outgoing: packet where the packet should be sent to, or NULL if |
| * unspecified |
| */ |
| struct batadv_hard_iface *if_outgoing; |
| |
| /** @queue_left: The queue (counter) this packet was applied to */ |
| atomic_t *queue_left; |
| }; |
| |
| /** |
| * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific) |
| */ |
| struct batadv_algo_iface_ops { |
| /** |
| * @activate: start routing mechanisms when hard-interface is brought up |
| * (optional) |
| */ |
| void (*activate)(struct batadv_hard_iface *hard_iface); |
| |
| /** @enable: init routing info when hard-interface is enabled */ |
| int (*enable)(struct batadv_hard_iface *hard_iface); |
| |
| /** @enabled: notification when hard-interface was enabled (optional) */ |
| void (*enabled)(struct batadv_hard_iface *hard_iface); |
| |
| /** @disable: de-init routing info when hard-interface is disabled */ |
| void (*disable)(struct batadv_hard_iface *hard_iface); |
| |
| /** |
| * @update_mac: (re-)init mac addresses of the protocol information |
| * belonging to this hard-interface |
| */ |
| void (*update_mac)(struct batadv_hard_iface *hard_iface); |
| |
| /** @primary_set: called when primary interface is selected / changed */ |
| void (*primary_set)(struct batadv_hard_iface *hard_iface); |
| }; |
| |
| /** |
| * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific) |
| */ |
| struct batadv_algo_neigh_ops { |
| /** @hardif_init: called on creation of single hop entry (optional) */ |
| void (*hardif_init)(struct batadv_hardif_neigh_node *neigh); |
| |
| /** |
| * @cmp: compare the metrics of two neighbors for their respective |
| * outgoing interfaces |
| */ |
| int (*cmp)(struct batadv_neigh_node *neigh1, |
| struct batadv_hard_iface *if_outgoing1, |
| struct batadv_neigh_node *neigh2, |
| struct batadv_hard_iface *if_outgoing2); |
| |
| /** |
| * @is_similar_or_better: check if neigh1 is equally similar or better |
| * than neigh2 for their respective outgoing interface from the metric |
| * prospective |
| */ |
| bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1, |
| struct batadv_hard_iface *if_outgoing1, |
| struct batadv_neigh_node *neigh2, |
| struct batadv_hard_iface *if_outgoing2); |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| /** @print: print the single hop neighbor list (optional) */ |
| void (*print)(struct batadv_priv *priv, struct seq_file *seq); |
| #endif |
| |
| /** @dump: dump neighbors to a netlink socket (optional) */ |
| void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, |
| struct batadv_priv *priv, |
| struct batadv_hard_iface *hard_iface); |
| }; |
| |
| /** |
| * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific) |
| */ |
| struct batadv_algo_orig_ops { |
| #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| /** @print: print the originator table (optional) */ |
| void (*print)(struct batadv_priv *priv, struct seq_file *seq, |
| struct batadv_hard_iface *hard_iface); |
| #endif |
| |
| /** @dump: dump originators to a netlink socket (optional) */ |
| void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, |
| struct batadv_priv *priv, |
| struct batadv_hard_iface *hard_iface); |
| }; |
| |
| /** |
| * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific) |
| */ |
| struct batadv_algo_gw_ops { |
| /** @init_sel_class: initialize GW selection class (optional) */ |
| void (*init_sel_class)(struct batadv_priv *bat_priv); |
| |
| /** |
| * @store_sel_class: parse and stores a new GW selection class |
| * (optional) |
| */ |
| ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff, |
| size_t count); |
| |
| /** @show_sel_class: prints the current GW selection class (optional) */ |
| ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff); |
| |
| /** |
| * @get_best_gw_node: select the best GW from the list of available |
| * nodes (optional) |
| */ |
| struct batadv_gw_node *(*get_best_gw_node) |
| (struct batadv_priv *bat_priv); |
| |
| /** |
| * @is_eligible: check if a newly discovered GW is a potential candidate |
| * for the election as best GW (optional) |
| */ |
| bool (*is_eligible)(struct batadv_priv *bat_priv, |
| struct batadv_orig_node *curr_gw_orig, |
| struct batadv_orig_node *orig_node); |
| |
| #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| /** @print: print the gateway table (optional) */ |
| void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq); |
| #endif |
| |
| /** @dump: dump gateways to a netlink socket (optional) */ |
| void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, |
| struct batadv_priv *priv); |
| }; |
| |
| /** |
| * struct batadv_algo_ops - mesh algorithm callbacks |
| */ |
| struct batadv_algo_ops { |
| /** @list: list node for the batadv_algo_list */ |
| struct hlist_node list; |
| |
| /** @name: name of the algorithm */ |
| char *name; |
| |
| /** @iface: callbacks related to interface handling */ |
| struct batadv_algo_iface_ops iface; |
| |
| /** @neigh: callbacks related to neighbors handling */ |
| struct batadv_algo_neigh_ops neigh; |
| |
| /** @orig: callbacks related to originators handling */ |
| struct batadv_algo_orig_ops orig; |
| |
| /** @gw: callbacks related to GW mode */ |
| struct batadv_algo_gw_ops gw; |
| }; |
| |
| /** |
| * 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 |
| */ |
| struct batadv_dat_entry { |
| /** @ip: the IPv4 corresponding to this DAT/ARP entry */ |
| __be32 ip; |
| |
| /** @mac_addr: the MAC address associated to the stored IPv4 */ |
| u8 mac_addr[ETH_ALEN]; |
| |
| /** @vid: the vlan ID associated to this entry */ |
| unsigned short vid; |
| |
| /** |
| * @last_update: time in jiffies when this entry was refreshed last time |
| */ |
| unsigned long last_update; |
| |
| /** @hash_entry: hlist node for &batadv_priv_dat.hash */ |
| struct hlist_node hash_entry; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * struct batadv_hw_addr - a list entry for a MAC address |
| */ |
| struct batadv_hw_addr { |
| /** @list: list node for the linking of entries */ |
| struct hlist_node list; |
| |
| /** @addr: the MAC address of this list entry */ |
| unsigned char addr[ETH_ALEN]; |
| }; |
| |
| /** |
| * struct batadv_dat_candidate - candidate destination for DAT operations |
| */ |
| struct batadv_dat_candidate { |
| /** |
| * @type: the type of the selected candidate. It can one of the |
| * following: |
| * - BATADV_DAT_CANDIDATE_NOT_FOUND |
| * - BATADV_DAT_CANDIDATE_ORIG |
| */ |
| int type; |
| |
| /** |
| * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to |
| * the corresponding originator node structure |
| */ |
| struct batadv_orig_node *orig_node; |
| }; |
| |
| /** |
| * struct batadv_tvlv_container - container for tvlv appended to OGMs |
| */ |
| struct batadv_tvlv_container { |
| /** @list: hlist node for &batadv_priv_tvlv.container_list */ |
| struct hlist_node list; |
| |
| /** @tvlv_hdr: tvlv header information needed to construct the tvlv */ |
| struct batadv_tvlv_hdr tvlv_hdr; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| }; |
| |
| /** |
| * struct batadv_tvlv_handler - handler for specific tvlv type and version |
| */ |
| struct batadv_tvlv_handler { |
| /** @list: hlist node for &batadv_priv_tvlv.handler_list */ |
| struct hlist_node list; |
| |
| /** |
| * @ogm_handler: handler callback which is given the tvlv payload to |
| * process on incoming OGM packets |
| */ |
| void (*ogm_handler)(struct batadv_priv *bat_priv, |
| struct batadv_orig_node *orig, |
| u8 flags, void *tvlv_value, u16 tvlv_value_len); |
| |
| /** |
| * @unicast_handler: handler callback which is given the tvlv payload to |
| * process on incoming unicast tvlv packets |
| */ |
| int (*unicast_handler)(struct batadv_priv *bat_priv, |
| u8 *src, u8 *dst, |
| void *tvlv_value, u16 tvlv_value_len); |
| |
| /** @type: tvlv type this handler feels responsible for */ |
| u8 type; |
| |
| /** @version: tvlv version this handler feels responsible for */ |
| u8 version; |
| |
| /** @flags: tvlv handler flags */ |
| u8 flags; |
| |
| /** @refcount: number of contexts the object is used */ |
| struct kref refcount; |
| |
| /** @rcu: struct used for freeing in an RCU-safe manner */ |
| struct rcu_head rcu; |
| }; |
| |
| /** |
| * enum batadv_tvlv_handler_flags - tvlv handler flags definitions |
| */ |
| enum batadv_tvlv_handler_flags { |
| /** |
| * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function |
| * will call this handler even if its type was not found (with no data) |
| */ |
| BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1), |
| |
| /** |
| * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the |
| * API marks a handler as being called, so it won't be called if the |
| * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set |
| */ |
| BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2), |
| }; |
| |
| /** |
| * struct batadv_store_mesh_work - Work queue item to detach add/del interface |
| * from sysfs locks |
| */ |
| struct batadv_store_mesh_work { |
| /** |
| * @net_dev: netdevice to add/remove to/from batman-adv soft-interface |
| */ |
| struct net_device *net_dev; |
| |
| /** @soft_iface_name: name of soft-interface to modify */ |
| char soft_iface_name[IFNAMSIZ]; |
| |
| /** @work: work queue item */ |
| struct work_struct work; |
| }; |
| |
| #endif /* _NET_BATMAN_ADV_TYPES_H_ */ |