[B.A.T.M.A.N.] [PATCH 3/8] batman-adv: Use inline kernel-doc for enum/struct

The inline kernel-doc comments make it easier to keep changes to the struct/enum synchronized with the documentation of the it. And it makes it easier for larger structures like struct batadv_priv to read the documentation inside the code.

Signed-off-by: Sven Eckelmann sven@narfation.org --- net/batman-adv/bat_iv_ogm.c | 17 +- net/batman-adv/gateway_common.h | 5 +- net/batman-adv/hard-interface.h | 27 +- net/batman-adv/log.h | 26 +- net/batman-adv/multicast.h | 16 +- net/batman-adv/types.h | 1989 +++++++++++++++++++++++++++------------ 6 files changed, 1444 insertions(+), 636 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 6cbf9afb..7c603e4b 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -72,16 +72,23 @@ static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work);

/** * enum batadv_dup_status - duplicate status - * @BATADV_NO_DUP: the packet is no duplicate - * @BATADV_ORIG_DUP: OGM is a duplicate in the originator (but not for the - * neighbor) - * @BATADV_NEIGH_DUP: OGM is a duplicate for the neighbor - * @BATADV_PROTECTED: originator is currently protected (after reboot) */ enum batadv_dup_status { + /** @BATADV_NO_DUP: the packet is no duplicate */ BATADV_NO_DUP = 0, + + /** + * @BATADV_ORIG_DUP: OGM is a duplicate in the originator (but not for + * the neighbor) + */ BATADV_ORIG_DUP, + + /** @BATADV_NEIGH_DUP: OGM is a duplicate for the neighbor */ BATADV_NEIGH_DUP, + + /** + * @BATADV_PROTECTED: originator is currently protected (after reboot) + */ BATADV_PROTECTED, };

diff --git a/net/batman-adv/gateway_common.h b/net/batman-adv/gateway_common.h index 0a6a97d2..be586c26 100644 --- a/net/batman-adv/gateway_common.h +++ b/net/batman-adv/gateway_common.h @@ -32,11 +32,12 @@ enum batadv_gw_modes {

/** * enum batadv_bandwidth_units - bandwidth unit types - * @BATADV_BW_UNIT_KBIT: unit type kbit - * @BATADV_BW_UNIT_MBIT: unit type mbit */ enum batadv_bandwidth_units { + /** @BATADV_BW_UNIT_KBIT: unit type kbit */ BATADV_BW_UNIT_KBIT, + + /** @BATADV_BW_UNIT_MBIT: unit type mbit */ BATADV_BW_UNIT_MBIT, };

diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 82228fc3..ba4ba081 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -41,25 +41,40 @@ enum batadv_hard_if_state {

/** * enum batadv_hard_if_bcast - broadcast avoidance options - * @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface - * @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no recipient - * @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it from - * @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */ enum batadv_hard_if_bcast { + /** @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface */ BATADV_HARDIF_BCAST_OK = 0, + + /** + * @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no + * recipient + */ BATADV_HARDIF_BCAST_NORECIPIENT, + + /** + * @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it + * from + */ BATADV_HARDIF_BCAST_DUPFWD, + + /** @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */ BATADV_HARDIF_BCAST_DUPORIG, };

/** * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal - * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface - * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed */ enum batadv_hard_if_cleanup { + /** + * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface + */ BATADV_IF_CLEANUP_KEEP, + + /** + * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was + * removed + */ BATADV_IF_CLEANUP_AUTO, };

diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h index 65ce97ef..4c48a89d 100644 --- a/net/batman-adv/log.h +++ b/net/batman-adv/log.h @@ -44,25 +44,33 @@ static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)

/** * enum batadv_dbg_level - available log levels - * @BATADV_DBG_BATMAN: OGM and TQ computations related messages - * @BATADV_DBG_ROUTES: route added / changed / deleted - * @BATADV_DBG_TT: translation table messages - * @BATADV_DBG_BLA: bridge loop avoidance messages - * @BATADV_DBG_DAT: ARP snooping and DAT related messages - * @BATADV_DBG_NC: network coding related messages - * @BATADV_DBG_MCAST: multicast related messages - * @BATADV_DBG_TP_METER: throughput meter messages - * @BATADV_DBG_ALL: the union of all the above log levels */ enum batadv_dbg_level { + /** @BATADV_DBG_BATMAN: OGM and TQ computations related messages */ BATADV_DBG_BATMAN = BIT(0), + + /** @BATADV_DBG_ROUTES: route added / changed / deleted */ BATADV_DBG_ROUTES = BIT(1), + + /** @BATADV_DBG_TT: translation table messages */ BATADV_DBG_TT = BIT(2), + + /** @BATADV_DBG_BLA: bridge loop avoidance messages */ BATADV_DBG_BLA = BIT(3), + + /** @BATADV_DBG_DAT: ARP snooping and DAT related messages */ BATADV_DBG_DAT = BIT(4), + + /** @BATADV_DBG_NC: network coding related messages */ BATADV_DBG_NC = BIT(5), + + /** @BATADV_DBG_MCAST: multicast related messages */ BATADV_DBG_MCAST = BIT(6), + + /** @BATADV_DBG_TP_METER: throughput meter messages */ BATADV_DBG_TP_METER = BIT(7), + + /** @BATADV_DBG_ALL: the union of all the above log levels */ BATADV_DBG_ALL = 255, };

diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h index 2a78cdda..2053a9f2 100644 --- a/net/batman-adv/multicast.h +++ b/net/batman-adv/multicast.h @@ -25,15 +25,21 @@ struct sk_buff;

/** * enum batadv_forw_mode - the way a packet should be forwarded as - * @BATADV_FORW_ALL: forward the packet to all nodes (currently via classic - * flooding) - * @BATADV_FORW_SINGLE: forward the packet to a single node (currently via the - * BATMAN unicast routing protocol) - * @BATADV_FORW_NONE: don't forward, drop it */ enum batadv_forw_mode { + /** + * @BATADV_FORW_ALL: forward the packet to all nodes (currently via + * classic flooding) + */ BATADV_FORW_ALL, + + /** + * @BATADV_FORW_SINGLE: forward the packet to a single node (currently + * via the BATMAN unicast routing protocol) + */ BATADV_FORW_SINGLE, + + /** @BATADV_FORW_NONE: don't forward, drop it */ BATADV_FORW_NONE, };

diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index a6279586..5e7a6edc 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -54,13 +54,15 @@ struct seq_file;

/** * enum batadv_dhcp_recipient - dhcp destination - * @BATADV_DHCP_NO: packet is not a dhcp message - * @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server - * @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */ 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, };

@@ -78,196 +80,274 @@ enum batadv_dhcp_recipient {

/** * 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 { + /** @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; };

/** * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V - * @BATADV_FULL_DUPLEX: tells if the connection over this link is full-duplex - * @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. */ 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 - * @elp_interval: time interval between two ELP transmissions - * @elp_seqno: current ELP sequence number - * @elp_skb: base skb containing the ELP message to send - * @elp_wq: workqueue used to schedule ELP transmissions - * @throughput_override: throughput override to disable link auto-detection - * @flags: interface specific flags */ 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; + + /** + * @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 - * @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device - * @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device - * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device - * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi device */ 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 - * @list: list node for batadv_hardif_list - * @if_num: identificator of the interface - * @if_status: status of the interface for batman-adv - * @num_bcasts: number of payload re-broadcasts on this interface (ARQ) - * @wifi_flags: flags whether this is (directly or indirectly) a wifi interface - * @net_dev: pointer to the net_device - * @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: per hard-interface B.A.T.M.A.N. IV data - * @bat_v: per hard-interface B.A.T.M.A.N. V data - * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs - * @neigh_list: list of unique single hop neighbors via this interface - * @neigh_list_lock: lock protecting neigh_list */ struct batadv_hard_iface { + /** @list: list node for batadv_hardif_list */ struct list_head list; + + /** @if_num: identificator of the interface */ s16 if_num; + + /** @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 + + /** + * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs + */ struct dentry *debug_dir; + + /** + * @neigh_list: list of unique single hop neighbors via this interface + */ struct hlist_head neigh_list; - /* neigh_list_lock protects: neigh_list */ + + /** @neigh_list_lock: lock protecting neigh_list */ spinlock_t neigh_list_lock; };

/** * struct batadv_orig_ifinfo - originator info per outgoing interface - * @list: list node for orig_node::ifinfo_list - * @if_outgoing: pointer to outgoing hard-interface - * @router: router that should be used to reach this originator - * @last_real_seqno: last and best known sequence number - * @last_ttl: ttl of last received packet - * @last_seqno_forwarded: seqno of the OGM which was forwarded last - * @batman_seqno_reset: time when the batman seqno window was reset - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_orig_ifinfo { + /** @list: list node for orig_node::ifinfo_list */ struct hlist_node list; + + /** @if_outgoing: pointer to outgoing hard-interface */ struct batadv_hard_iface *if_outgoing; - struct batadv_neigh_node __rcu *router; /* rcu protected pointer */ + + /** @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; + + /** @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 - * @fragment_list: head of list with fragments - * @lock: lock to protect the list of fragments - * @timestamp: time (jiffie) of last received fragment - * @seqno: sequence number of the fragments in the list - * @size: accumulated size of packets in list - * @total_size: expected size of the assembled packet */ struct batadv_frag_table_entry { + /** @fragment_list: head of list with fragments */ struct hlist_head fragment_list; - spinlock_t lock; /* protects 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 - * @list: list node information - * @skb: fragment - * @no: fragment number in the set */ 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 - * @crc: CRC32 checksum of the entries belonging to this vlan - * @num_entries: number of TT entries for this VLAN */ 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 - * @vid: the VLAN identifier - * @tt: VLAN specific TT attributes - * @list: list node for orig_node::vlan_list - * @refcount: number of context where this object is currently in use - * @rcu: struct used for freeing in a RCU-safe manner */ 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 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 - * @bcast_own: set of bitfields (one per hard-interface) where each one counts - * the number of our OGMs this orig_node rebroadcasted "back" to us (relative - * to last_real_seqno). Every bitfield is BATADV_TQ_LOCAL_WINDOW_SIZE bits long. - * @bcast_own_sum: sum of bcast_own - * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum, - * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count */ struct batadv_orig_bat_iv { + /** + * @bcast_own: set of bitfields (one per hard-interface) where each one + * counts the number of our OGMs this orig_node rebroadcasted "back" to + * us (relative to last_real_seqno). Every bitfield is + * BATADV_TQ_LOCAL_WINDOW_SIZE bits long. + */ unsigned long *bcast_own; + + /** @bcast_own_sum: sum of bcast_own */ u8 *bcast_own_sum; - /* ogm_cnt_lock protects: bcast_own, bcast_own_sum, + + /** + * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum, * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count */ spinlock_t ogm_cnt_lock; @@ -275,130 +355,205 @@ struct batadv_orig_bat_iv {

/** * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh - * @orig: originator ethernet address - * @ifinfo_list: list for routers per outgoing interface - * @last_bonding_candidate: pointer to last ifinfo of last used router - * @dat_addr: address of the orig node in the distributed hash - * @last_seen: time when last packet from this node was received - * @bcast_seqno_reset: time when the broadcast seqno window was reset - * @mcast_handler_lock: synchronizes mcast-capability and -flag changes - * @mcast_flags: multicast flags announced by the orig node - * @mcast_want_all_unsnoopables_node: a list node for the - * mcast.want_all_unsnoopables list - * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list - * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list - * @capabilities: announced capabilities of this originator - * @capa_initialized: bitfield to remember whether a capability was initialized - * @last_ttvn: last seen translation table version number - * @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_lock: prevents from updating the table while reading it. Table update is - * made up by two operations (data structure update and metdata -CRC/TTVN- - * recalculation) and they have to be executed atomically in order to avoid - * another thread to read the table/metadata between those. - * @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 - * @neigh_list_lock: lock protecting neigh_list and router - * @hash_entry: hlist node for batadv_priv::orig_hash - * @bat_priv: pointer to soft_iface this orig node belongs to - * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno - * @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 - * @fragments: array with heads for fragment chains - * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the - * originator represented by this object - * @vlan_list_lock: lock protecting vlan_list - * @bat_iv: B.A.T.M.A.N. IV private structure */ 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 - /* synchronizes mcast tvlv specific orig changes */ + /** + * @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; #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; - spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */ - /* prevents from changing the table while reading it */ + + /** @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 + * metdata -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 protects: neigh_list, ifinfo_list, - * last_bonding_candidate and router + + /** + * @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 protects: bcast_bits & last_bcast_seqno */ + + /** @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; - spinlock_t in_coding_list_lock; /* Protects in_coding_list */ - spinlock_t out_coding_list_lock; /* Protects 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; - spinlock_t vlan_list_lock; /* protects 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 - * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled - * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled - * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability - * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability - * (= orig node announces a tvlv of type BATADV_TVLV_MCAST) */ 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 - * @list: list node for batadv_priv_gw::list - * @orig_node: pointer to corresponding orig node - * @bandwidth_down: advertised uplink download bandwidth - * @bandwidth_up: advertised uplink upload bandwidth - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ 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; };

@@ -407,118 +562,161 @@ DECLARE_EWMA(throughput, 10, 8) /** * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor * information - * @throughput: ewma link throughput towards this neighbor - * @elp_interval: time interval between two ELP transmissions - * @elp_latest_seqno: latest and best known ELP sequence number - * @last_unicast_tx: when the last unicast packet has been sent to this neighbor - * @metric_work: work queue callback item for metric update */ 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 - * @list: list node for batadv_hard_iface::neigh_list - * @addr: the MAC address of the neighboring interface - * @orig: the address of the originator this neighbor node belongs to - * @if_incoming: pointer to incoming hard-interface - * @last_seen: when last packet via this neighbor was received - * @bat_v: B.A.T.M.A.N. V private data - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in a RCU-safe manner */ 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 - * @list: list node for batadv_orig_node::neigh_list - * @orig_node: pointer to corresponding orig_node - * @addr: the MAC address of the neighboring interface - * @ifinfo_list: list for routing metrics per outgoing interface - * @ifinfo_lock: lock protecting private ifinfo members and list - * @if_incoming: pointer to incoming hard-interface - * @last_seen: when last packet via this neighbor was received - * @hardif_neigh: hardif_neigh of this neighbor - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ 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; - spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */ + + /** @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 - * @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) - * @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 */ 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 - * @throughput: last throughput metric received from originator via this neigh - * @last_seqno: last sequence number known for this neighbor */ 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 - * @list: list node for batadv_neigh_node::ifinfo_list - * @if_outgoing: pointer to outgoing hard-interface - * @bat_iv: B.A.T.M.A.N. IV private structure - * @bat_v: B.A.T.M.A.N. V private data - * @last_ttl: last received ttl from this neigh node - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in a RCU-safe manner */ 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; };

@@ -526,148 +724,278 @@ struct batadv_neigh_ifinfo {

/** * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression - * @orig: mac address of orig node orginating the broadcast - * @crc: crc32 checksum of broadcast payload - * @entrytime: time when the broadcast packet was received */ 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 - * @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_FRAG_TX: transmitted fragment traffic packet counter - * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter - * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter - * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter - * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter - * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment 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: 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 - * @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 - * @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 - * @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 metdata -CRC/TTVN- recalculation) and they have to be - * executed atomically in order to avoid another thread to read the - * table/metadata between those. - * @work: work queue callback item for translation table purging */ 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; - spinlock_t changes_list_lock; /* protects changes */ - spinlock_t req_list_lock; /* protects req_list */ - spinlock_t roam_list_lock; /* protects 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; - /* protects last_changeset & last_changeset_len */ + + /** + * @last_changeset_lock: lock protecting last_changeset & + * last_changeset_len + */ spinlock_t last_changeset_lock; - /* prevents from executing a commit while reading the table */ + + /** + * @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 metdata -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; };

@@ -675,31 +1003,57 @@ struct batadv_priv_tt {

/** * 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 - * @loopdetect_addr: MAC address used for own loopdetection frames - * @loopdetect_lasttime: time when the loopdetection frames were sent - * @loopdetect_next: how many periods to wait for the next loopdetect process - * @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 */ 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; - /* protects bcast_duplist & 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 @@ -708,68 +1062,94 @@ struct batadv_priv_bla {

/** * struct batadv_priv_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 */ 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; - spinlock_t lock; /* protects log_buff, log_start and 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 - * @gateway_list: list of available gateway nodes - * @list_lock: lock protecting gateway_list & curr_gw - * @curr_gw: pointer to currently selected gateway node - * @mode: gateway operation: off, client or server (see batadv_gw_modes) - * @sel_class: gateway selection class (applies if gw_mode client) - * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server) - * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server) - * @reselect: bool indicating a gateway re-selection is in progress */ struct batadv_priv_gw { + /** @gateway_list: list of available gateway nodes */ struct hlist_head gateway_list; - spinlock_t list_lock; /* protects gateway_list & curr_gw */ - struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */ + + /** @list_lock: lock protecting gateway_list & curr_gw */ + spinlock_t list_lock; + + /** @curr_gw: pointer to currently selected gateway node */ + struct batadv_gw_node __rcu *curr_gw; + + /** + * @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 - * @container_list: list of registered tvlv containers to be sent with each OGM - * @handler_list: list of the various tvlv content handlers - * @container_list_lock: protects tvlv container list access - * @handler_list_lock: protects handler list access */ 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; - spinlock_t container_list_lock; /* protects container_list */ - spinlock_t handler_list_lock; /* protects 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 - * @addr: node DAT address - * @hash: hashtable representing the local ARP cache - * @work: work queue callback item for cache purging */ 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 @@ -777,375 +1157,582 @@ struct batadv_priv_dat { #ifdef CONFIG_BATMAN_ADV_MCAST /** * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged - * @exists: whether a querier exists in the mesh - * @shadowing: if a querier exists, whether it is potentially shadowing - * multicast listeners (i.e. querier is behind our own bridge segment) */ struct batadv_mcast_querier_state { + /** @exists: whether a querier exists in the mesh */ bool exists; + + /** + * @shadowing: if a querier exists, whether it is potentially shadowing + * multicast listeners (i.e. querier is behind our own bridge segment) + */ bool shadowing; };

/** * struct batadv_priv_mcast - per mesh interface mcast data - * @mla_list: list of multicast addresses we are currently announcing via TT - * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable - * multicast traffic - * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic - * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic - * @querier_ipv4: the current state of an IGMP querier in the mesh - * @querier_ipv6: the current state of an MLD querier in the mesh - * @flags: the flags we have last sent in our mcast tvlv - * @enabled: whether the multicast tvlv is currently enabled - * @bridged: whether the soft interface has a bridge on top - * @num_disabled: number of nodes that have no mcast tvlv - * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic - * @num_want_all_ipv4: counter for items in want_all_ipv4_list - * @num_want_all_ipv6: counter for items in want_all_ipv6_list - * @want_lists_lock: lock for protecting modifications to mcast want lists - * (traversals are rcu-locked) - * @work: work queue callback item for multicast TT and TVLV updates */ 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; + + /** @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; + + /** @flags: the flags we have last sent in our mcast tvlv */ u8 flags; + + /** @enabled: whether the multicast tvlv is currently enabled */ bool enabled; + + /** @bridged: whether the soft interface has a bridge on top */ bool bridged; + + /** @num_disabled: number of nodes that have no mcast tvlv */ atomic_t num_disabled; + + /** + * @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; - /* protects want_all_{unsnoopables,ipv4,ipv6}_list */ + + /** + * @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 - * @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 { + /** @work: work queue callback item for cleanup */ struct delayed_work work; + + /** + * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs + */ struct dentry *debug_dir; + + /** + * @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 - * @seqno: seqno of the unacked packet - * @len: length of the packet - * @list: list node for batadv_tp_vars::unacked_list * * 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 - * @BATADV_TP_RECEIVER: Initialized as receiver - * @BATADV_TP_SENDER: Initialized as sender */ 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 - * @list: list node for bat_priv::tp_list - * @timer: timer for ack (receiver) and retry (sender) - * @bat_priv: pointer to the mesh object - * @start_time: start time in jiffies - * @other_end: mac address of remote - * @role: receiver/sender modi - * @sending: sending binary semaphore: 1 if sending, 0 is not - * @reason: reason for a stopped session - * @finish_work: work item for the finishing procedure - * @test_length: test length in milliseconds - * @session: TP session identifier - * @icmp_uid: local ICMP "socket" index - * @dec_cwnd: decimal part of the cwnd used during linear growth - * @cwnd: current size of the congestion window - * @cwnd_lock: lock do protect @cwnd & @dec_cwnd - * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the - * connection switches to the Congestion Avoidance state - * @last_acked: last acked byte - * @last_sent: last sent byte, not yet acked - * @tot_sent: amount of data sent/ACKed so far - * @dup_acks: duplicate ACKs counter - * @fast_recovery: true if in Fast Recovery mode - * @recover: last sent seqno when entering Fast Recovery - * @rto: sender timeout - * @srtt: smoothed RTT scaled by 2^3 - * @rttvar: RTT variation scaled by 2^2 - * @more_bytes: waiting queue anchor when waiting for more ack/retry timeout - * @prerandom_offset: offset inside the prerandom buffer - * @prerandom_lock: spinlock protecting access to prerandom_offset - * @last_recv: last in-order received packet - * @unacked_list: list of unacked packets (meta-info only) - * @unacked_lock: protect unacked_list - * @last_recv_time: time time (jiffies) a msg was received - * @refcount: number of context where the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ 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; - spinlock_t cwnd_lock; /* Protects cwnd & dec_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 */ bool fast_recovery; + + /** @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; - spinlock_t prerandom_lock; /* Protects 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; - spinlock_t unacked_lock; /* Protects 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 - * @bat_priv: pointer to the mesh object - * @vid: VLAN identifier - * @kobj: kobject for sysfs vlan subdirectory - * @ap_isolation: AP isolation state - * @tt: TT private attributes (VLAN specific) - * @list: list node for bat_priv::softif_vlan_list - * @refcount: number of context where this object is currently in use - * @rcu: struct used for freeing in a RCU-safe manner */ 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 - * @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 - * @ogm_wq: workqueue used to schedule OGM transmissions */ 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_wq: workqueue used to schedule OGM transmissions */ struct delayed_work ogm_wq; };

/** * 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 - * @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 - * @packet_size_max: max packet size that can be transmitted via - * multiple fragmented skbs or a single frame if fragmentation is disabled - * @frag_seqno: incremental counter to identify chains of egress fragments - * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is - * enabled - * @distributed_arp_table: bool indicating whether distributed ARP table is - * enabled - * @multicast_mode: Enable or disable multicast optimizations on this node's - * sender/originating side - * @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) - * @isolation_mark: the skb->mark value used to match packets for AP isolation - * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be used - * for the isolation mark - * @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 - * @tp_list: list of tp sessions - * @tp_num: number of currently active tp sessions - * @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 - * @tp_list_lock: spinlock protecting @tp_list - * @orig_work: work queue callback item for orig node purging - * @primary_if: one of the hard-interfaces assigned to this mesh interface - * becomes the primary interface - * @algo_ops: routing algorithm used by this mesh interface - * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top - * of the mesh interface represented by this object - * @softif_vlan_list_lock: lock protecting softif_vlan_list - * @bla: bridge loope avoidance data - * @debug_log: holding debug logging relevant data - * @gw: gateway data - * @tt: translation table data - * @tvlv: type-version-length-value data - * @dat: distributed arp table data - * @mcast: multicast data - * @network_coding: bool indicating whether network coding is enabled - * @nc: network coding data - * @bat_v: B.A.T.M.A.N. V per soft-interface private 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; #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; + + /** @num_ifaces: number of interfaces assigned to this mesh interface */ char num_ifaces; + + /** @mesh_obj: kobject for sysfs mesh subdirectory */ struct kobject *mesh_obj; + + /** @debug_dir: dentry for debugfs batman-adv subdirectory */ struct dentry *debug_dir; + + /** @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; - spinlock_t forw_bat_list_lock; /* protects forw_bat_list */ - spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */ - spinlock_t tp_list_lock; /* protects tp_list */ + + /** @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; - spinlock_t softif_vlan_list_lock; /* protects 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 - * @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 { + /** + * @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; - spinlock_t lock; /* protects queue_list, queue_len & 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 - * @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 { + /** @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]; };

@@ -1153,312 +1740,429 @@ struct batadv_socket_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 - * @crc_lock: lock protecting crc - * @report_work: work struct for reporting detected loops - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ 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; - spinlock_t crc_lock; /* protects 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 - * @addr: mac address of claimed non-mesh client - * @vid: vlan id this client was detected on - * @backbone_gw: pointer to backbone gw claiming this client - * @backbone_lock: lock protecting backbone_gw pointer - * @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 { + /** @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; - spinlock_t backbone_lock; /* protects 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 - * @addr: mac address of non-mesh client - * @vid: VLAN identifier - * @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 { + /** @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 - * @common: general translation table data - * @last_seen: timestamp used for purging stale tt local entries - * @vlan: soft-interface vlan of the entry */ 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 - * @common: general translation table data - * @orig_list: list of orig nodes announcing this non-mesh client - * @orig_list_count: number of items in the orig_list - * @list_lock: lock protecting orig_list - * @roam_at: time at which TT_GLOBAL_ROAM was set */ 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; - spinlock_t list_lock; /* protects orig_list */ + + /** @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 - * @orig_node: pointer to orig node announcing this non-mesh client - * @ttvn: translation table version number which added the non-mesh client - * @flags: per orig entry TT sync flags - * @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 { + /** @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 - * @list: list node for batadv_priv_tt::changes_list - * @change: holds the actual translation table diff data */ 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 - * @addr: mac address address of the originator this request was sent to - * @issued_at: timestamp used for purging stale tt requests - * @refcount: number of contexts the object is used by - * @list: list node for batadv_priv_tt::req_list */ 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 - * @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 { + /** @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 - * @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 { + /** @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 - * @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 { + /** @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; - spinlock_t packet_list_lock; /* Protects 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 - * @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 { + /** @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. - * @decoded: Marks a skb as decoded, which is checked when searching for coding - * opportunities in network-coding.c - * @num_bcasts: Counter for broadcast packet retransmissions */ struct batadv_skb_cb { + /** + * @decoded: Marks a skb as decoded, which is checked when searching for + * coding opportunities in network-coding.c + */ bool decoded; + + /** @num_bcasts: Counter for broadcast packet retransmissions */ unsigned int num_bcasts; };

/** * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded - * @list: list node for batadv_priv::forw_{bat,bcast}_list - * @cleanup_list: list node for purging functions - * @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 aggregated OGMv1 packets - * @delayed_work: work queue callback item for packet sending - * @if_incoming: pointer to incoming hard-iface or primary iface if - * locally generated packet - * @if_outgoing: packet where the packet should be sent to, or NULL if - * unspecified - * @queue_left: The queue (counter) this packet was applied to */ struct batadv_forw_packet { + /** @list: list node for batadv_priv::forw_{bat,bcast}_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) - * @activate: start routing mechanisms when hard-interface is brought up - * (optional) - * @enable: init routing info when hard-interface is enabled - * @disable: de-init routing info when hard-interface is disabled - * @update_mac: (re-)init mac addresses of the protocol information - * belonging to this hard-interface - * @primary_set: called when primary interface is selected / changed */ 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); + + /** @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) - * @hardif_init: called on creation of single hop entry - * (optional) - * @cmp: compare the metrics of two neighbors for their respective outgoing - * interfaces - * @is_similar_or_better: check if neigh1 is equally similar or better than - * neigh2 for their respective outgoing interface from the metric prospective - * @print: print the single hop neighbor list (optional) - * @dump: dump neighbors to a netlink socket (optional) */ 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); @@ -1466,24 +2170,36 @@ struct batadv_algo_neigh_ops {

/** * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific) - * @free: free the resources allocated by the routing algorithm for an orig_node - * object (optional) - * @add_if: ask the routing algorithm to apply the needed changes to the - * orig_node due to a new hard-interface being added into the mesh (optional) - * @del_if: ask the routing algorithm to apply the needed changes to the - * orig_node due to an hard-interface being removed from the mesh (optional) - * @print: print the originator table (optional) - * @dump: dump originators to a netlink socket (optional) */ struct batadv_algo_orig_ops { + /** + * @free: free the resources allocated by the routing algorithm for an + * orig_node object (optional) + */ void (*free)(struct batadv_orig_node *orig_node); + + /** + * @add_if: ask the routing algorithm to apply the needed changes to the + * orig_node due to a new hard-interface being added into the mesh + * (optional) + */ int (*add_if)(struct batadv_orig_node *orig_node, int max_if_num); + + /** + * @del_if: ask the routing algorithm to apply the needed changes to the + * orig_node due to an hard-interface being removed from the mesh + * (optional) + */ int (*del_if)(struct batadv_orig_node *orig_node, int max_if_num, int del_if_num); + #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); @@ -1491,158 +2207,213 @@ struct batadv_algo_orig_ops {

/** * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific) - * @init_sel_class: initialize GW selection class (optional) - * @store_sel_class: parse and stores a new GW selection class (optional) - * @show_sel_class: prints the current GW selection class (optional) - * @get_best_gw_node: select the best GW from the list of available nodes - * (optional) - * @is_eligible: check if a newly discovered GW is a potential candidate for - * the election as best GW (optional) - * @print: print the gateway table (optional) - * @dump: dump gateways to a netlink socket (optional) */ 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 - * @list: list node for the batadv_algo_list - * @name: name of the algorithm - * @iface: callbacks related to interface handling - * @neigh: callbacks related to neighbors handling - * @orig: callbacks related to originators handling - * @gw: callbacks related to GW mode */ 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 - * @ip: the IPv4 corresponding to this DAT/ARP entry - * @mac_addr: the MAC address associated to the stored IPv4 - * @vid: the vlan ID associated to this entry - * @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 { + /** @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 - * @list: list node for the linking of entries - * @addr: the MAC address of this list entry */ 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 - * @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 { + /** + * @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 - * @list: hlist node for batadv_priv_tvlv::container_list - * @tvlv_hdr: tvlv header information needed to construct the tvlv - * @refcount: number of contexts the object is used */ 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 - * @list: hlist node for batadv_priv_tvlv::handler_list - * @ogm_handler: handler callback which is given the tvlv payload to process on - * incoming OGM packets - * @unicast_handler: handler callback which is given the tvlv payload to process - * on incoming unicast tvlv packets - * @type: tvlv type this handler feels responsible for - * @version: tvlv version this handler feels responsible for - * @flags: tvlv handler flags - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ 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 - * @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_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 */ 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 - * @net_dev: netdevice to add/remove to/from batman-adv soft-interface - * @soft_iface_name: name of soft-interface to modify - * @work: work queue item */ 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; };