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linux-sg2042/net/batman-adv/types.h

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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _NET_BATMAN_ADV_TYPES_H_
#define _NET_BATMAN_ADV_TYPES_H_
#ifndef _NET_BATMAN_ADV_MAIN_H_
#error only "main.h" can be included directly
#endif
#include <linux/average.h>
#include <linux/bitops.h>
#include <linux/compiler.h>
#include <linux/if_ether.h>
#include <linux/kref.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/sched.h> /* for linux/wait.h */
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <uapi/linux/batadv_packet.h>
#include <uapi/linux/batman_adv.h>
struct seq_file;
#ifdef CONFIG_BATMAN_ADV_DAT
/**
* batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
* changed, BATADV_DAT_ADDR_MAX is changed as well.
*
* *Please be careful: batadv_dat_addr_t must be UNSIGNED*
*/
#define batadv_dat_addr_t u16
#endif /* CONFIG_BATMAN_ADV_DAT */
/**
* enum batadv_dhcp_recipient - dhcp destination
*/
enum batadv_dhcp_recipient {
/** @BATADV_DHCP_NO: packet is not a dhcp message */
BATADV_DHCP_NO = 0,
/** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */
BATADV_DHCP_TO_SERVER,
/** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */
BATADV_DHCP_TO_CLIENT,
};
/**
* BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
* wire only
*/
#define BATADV_TT_REMOTE_MASK 0x00FF
/**
* BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
* among the nodes. These flags are used to compute the global/local CRC
*/
#define BATADV_TT_SYNC_MASK 0x00F0
/**
* struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data
*/
struct batadv_hard_iface_bat_iv {
/** @ogm_buff: buffer holding the OGM packet */
unsigned char *ogm_buff;
/** @ogm_buff_len: length of the OGM packet buffer */
int ogm_buff_len;
/** @ogm_seqno: OGM sequence number - used to identify each OGM */
atomic_t ogm_seqno;
};
/**
* enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V
*/
enum batadv_v_hard_iface_flags {
/**
* @BATADV_FULL_DUPLEX: tells if the connection over this link is
* full-duplex
*/
BATADV_FULL_DUPLEX = BIT(0),
/**
* @BATADV_WARNING_DEFAULT: tells whether we have warned the user that
* no throughput data is available for this interface and that default
* values are assumed.
*/
BATADV_WARNING_DEFAULT = BIT(1),
};
/**
* struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data
*/
struct batadv_hard_iface_bat_v {
/** @elp_interval: time interval between two ELP transmissions */
atomic_t elp_interval;
/** @elp_seqno: current ELP sequence number */
atomic_t elp_seqno;
/** @elp_skb: base skb containing the ELP message to send */
struct sk_buff *elp_skb;
/** @elp_wq: workqueue used to schedule ELP transmissions */
struct delayed_work elp_wq;
/**
* @throughput_override: throughput override to disable link
* auto-detection
*/
atomic_t throughput_override;
/** @flags: interface specific flags */
u8 flags;
};
/**
* enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration
* of a batadv_hard_iface
*/
enum batadv_hard_iface_wifi_flags {
/** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */
BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0),
/** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */
BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
/**
* @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device
*/
BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
/**
* @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi
* device
*/
BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3),
};
/**
* struct batadv_hard_iface - network device known to batman-adv
*/
struct batadv_hard_iface {
/** @list: list node for batadv_hardif_list */
struct list_head list;
/** @if_num: identificator of the interface */
unsigned int 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: lock protecting neigh_list */
spinlock_t neigh_list_lock;
};
/**
* struct batadv_orig_ifinfo - originator info per outgoing interface
*/
struct batadv_orig_ifinfo {
/** @list: list node for &batadv_orig_node.ifinfo_list */
struct hlist_node list;
/** @if_outgoing: pointer to outgoing hard-interface */
struct batadv_hard_iface *if_outgoing;
/** @router: router that should be used to reach this originator */
struct batadv_neigh_node __rcu *router;
/** @last_real_seqno: last and best known sequence number */
u32 last_real_seqno;
/** @last_ttl: ttl of last received packet */
u8 last_ttl;
/** @last_seqno_forwarded: seqno of the OGM which was forwarded last */
u32 last_seqno_forwarded;
/** @batman_seqno_reset: time when the batman seqno window was reset */
unsigned long batman_seqno_reset;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_frag_table_entry - head in the fragment buffer table
*/
struct batadv_frag_table_entry {
/** @fragment_list: head of list with fragments */
struct hlist_head fragment_list;
/** @lock: lock to protect the list of fragments */
spinlock_t lock;
/** @timestamp: time (jiffie) of last received fragment */
unsigned long timestamp;
/** @seqno: sequence number of the fragments in the list */
u16 seqno;
/** @size: accumulated size of packets in list */
u16 size;
/** @total_size: expected size of the assembled packet */
u16 total_size;
};
/**
* struct batadv_frag_list_entry - entry in a list of fragments
*/
struct batadv_frag_list_entry {
/** @list: list node information */
struct hlist_node list;
/** @skb: fragment */
struct sk_buff *skb;
/** @no: fragment number in the set */
u8 no;
};
/**
* struct batadv_vlan_tt - VLAN specific TT attributes
*/
struct batadv_vlan_tt {
/** @crc: CRC32 checksum of the entries belonging to this vlan */
u32 crc;
/** @num_entries: number of TT entries for this VLAN */
atomic_t num_entries;
};
/**
* struct batadv_orig_node_vlan - VLAN specific data per orig_node
*/
struct batadv_orig_node_vlan {
/** @vid: the VLAN identifier */
unsigned short vid;
/** @tt: VLAN specific TT attributes */
struct batadv_vlan_tt tt;
/** @list: list node for &batadv_orig_node.vlan_list */
struct hlist_node list;
/**
* @refcount: number of context where this object is currently in use
*/
struct kref refcount;
/** @rcu: struct used for freeing in a RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
*/
struct batadv_orig_bat_iv {
/**
* @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: 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;
};
/**
* struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
*/
struct batadv_orig_node {
/** @orig: originator ethernet address */
u8 orig[ETH_ALEN];
/** @ifinfo_list: list for routers per outgoing interface */
struct hlist_head ifinfo_list;
/**
* @last_bonding_candidate: pointer to last ifinfo of last used router
*/
struct batadv_orig_ifinfo *last_bonding_candidate;
#ifdef CONFIG_BATMAN_ADV_DAT
/** @dat_addr: address of the orig node in the distributed hash */
batadv_dat_addr_t dat_addr;
#endif
/** @last_seen: time when last packet from this node was received */
unsigned long last_seen;
/**
* @bcast_seqno_reset: time when the broadcast seqno window was reset
*/
unsigned long bcast_seqno_reset;
#ifdef CONFIG_BATMAN_ADV_MCAST
/**
* @mcast_handler_lock: synchronizes mcast-capability and -flag changes
*/
spinlock_t mcast_handler_lock;
/** @mcast_flags: multicast flags announced by the orig node */
u8 mcast_flags;
/**
* @mcast_want_all_unsnoopables_node: a list node for the
* mcast.want_all_unsnoopables list
*/
struct hlist_node mcast_want_all_unsnoopables_node;
/**
* @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4
* list
*/
struct hlist_node mcast_want_all_ipv4_node;
/**
* @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6
* list
*/
struct hlist_node mcast_want_all_ipv6_node;
#endif
/** @capabilities: announced capabilities of this originator */
unsigned long capabilities;
/**
* @capa_initialized: bitfield to remember whether a capability was
* initialized
*/
unsigned long capa_initialized;
/** @last_ttvn: last seen translation table version number */
atomic_t last_ttvn;
/** @tt_buff: last tt changeset this node received from the orig node */
unsigned char *tt_buff;
/**
* @tt_buff_len: length of the last tt changeset this node received
* from the orig node
*/
s16 tt_buff_len;
/** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */
spinlock_t tt_buff_lock;
/**
* @tt_lock: prevents from updating the table while reading it. Table
* update is made up by two operations (data structure update and
* 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: lock protecting neigh_list, ifinfo_list,
* last_bonding_candidate and router
*/
spinlock_t neigh_list_lock;
/** @hash_entry: hlist node for &batadv_priv.orig_hash */
struct hlist_node hash_entry;
/** @bat_priv: pointer to soft_iface this orig node belongs to */
struct batadv_priv *bat_priv;
/** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */
spinlock_t bcast_seqno_lock;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
#ifdef CONFIG_BATMAN_ADV_NC
/** @in_coding_list: list of nodes this orig can hear */
struct list_head in_coding_list;
/** @out_coding_list: list of nodes that can hear this orig */
struct list_head out_coding_list;
/** @in_coding_list_lock: protects in_coding_list */
spinlock_t in_coding_list_lock;
/** @out_coding_list_lock: protects out_coding_list */
spinlock_t out_coding_list_lock;
#endif
/** @fragments: array with heads for fragment chains */
struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
/**
* @vlan_list: a list of orig_node_vlan structs, one per VLAN served by
* the originator represented by this object
*/
struct hlist_head vlan_list;
/** @vlan_list_lock: lock protecting vlan_list */
spinlock_t vlan_list_lock;
/** @bat_iv: B.A.T.M.A.N. IV private structure */
struct batadv_orig_bat_iv bat_iv;
};
/**
* enum batadv_orig_capabilities - orig node capabilities
*/
enum batadv_orig_capabilities {
/**
* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table
* enabled
*/
BATADV_ORIG_CAPA_HAS_DAT,
/** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */
BATADV_ORIG_CAPA_HAS_NC,
/** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */
BATADV_ORIG_CAPA_HAS_TT,
/**
* @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
* (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
*/
BATADV_ORIG_CAPA_HAS_MCAST,
};
/**
* struct batadv_gw_node - structure for orig nodes announcing gw capabilities
*/
struct batadv_gw_node {
/** @list: list node for &batadv_priv_gw.list */
struct hlist_node list;
/** @orig_node: pointer to corresponding orig node */
struct batadv_orig_node *orig_node;
/** @bandwidth_down: advertised uplink download bandwidth */
u32 bandwidth_down;
/** @bandwidth_up: advertised uplink upload bandwidth */
u32 bandwidth_up;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
DECLARE_EWMA(throughput, 10, 8)
/**
* struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
* information
*/
struct batadv_hardif_neigh_node_bat_v {
/** @throughput: ewma link throughput towards this neighbor */
struct ewma_throughput throughput;
/** @elp_interval: time interval between two ELP transmissions */
u32 elp_interval;
/** @elp_latest_seqno: latest and best known ELP sequence number */
u32 elp_latest_seqno;
/**
* @last_unicast_tx: when the last unicast packet has been sent to this
* neighbor
*/
unsigned long last_unicast_tx;
/** @metric_work: work queue callback item for metric update */
struct work_struct metric_work;
};
/**
* struct batadv_hardif_neigh_node - unique neighbor per hard-interface
*/
struct batadv_hardif_neigh_node {
/** @list: list node for &batadv_hard_iface.neigh_list */
struct hlist_node list;
/** @addr: the MAC address of the neighboring interface */
u8 addr[ETH_ALEN];
/**
* @orig: the address of the originator this neighbor node belongs to
*/
u8 orig[ETH_ALEN];
/** @if_incoming: pointer to incoming hard-interface */
struct batadv_hard_iface *if_incoming;
/** @last_seen: when last packet via this neighbor was received */
unsigned long last_seen;
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
/** @bat_v: B.A.T.M.A.N. V private data */
struct batadv_hardif_neigh_node_bat_v bat_v;
#endif
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in a RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_neigh_node - structure for single hops neighbors
*/
struct batadv_neigh_node {
/** @list: list node for &batadv_orig_node.neigh_list */
struct hlist_node list;
/** @orig_node: pointer to corresponding orig_node */
struct batadv_orig_node *orig_node;
/** @addr: the MAC address of the neighboring interface */
u8 addr[ETH_ALEN];
/** @ifinfo_list: list for routing metrics per outgoing interface */
struct hlist_head ifinfo_list;
/** @ifinfo_lock: lock protecting ifinfo_list and its members */
spinlock_t ifinfo_lock;
/** @if_incoming: pointer to incoming hard-interface */
struct batadv_hard_iface *if_incoming;
/** @last_seen: when last packet via this neighbor was received */
unsigned long last_seen;
/** @hardif_neigh: hardif_neigh of this neighbor */
struct batadv_hardif_neigh_node *hardif_neigh;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
* interface for B.A.T.M.A.N. IV
*/
struct batadv_neigh_ifinfo_bat_iv {
/** @tq_recv: ring buffer of received TQ values from this neigh node */
u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
/** @tq_index: ring buffer index */
u8 tq_index;
/**
* @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
*/
u8 tq_avg;
/**
* @real_bits: bitfield containing the number of OGMs received from this
* neigh node (relative to orig_node->last_real_seqno)
*/
DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
/** @real_packet_count: counted result of real_bits */
u8 real_packet_count;
};
/**
* struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing
* interface for B.A.T.M.A.N. V
*/
struct batadv_neigh_ifinfo_bat_v {
/**
* @throughput: last throughput metric received from originator via this
* neigh
*/
u32 throughput;
/** @last_seqno: last sequence number known for this neighbor */
u32 last_seqno;
};
/**
* struct batadv_neigh_ifinfo - neighbor information per outgoing interface
*/
struct batadv_neigh_ifinfo {
/** @list: list node for &batadv_neigh_node.ifinfo_list */
struct hlist_node list;
/** @if_outgoing: pointer to outgoing hard-interface */
struct batadv_hard_iface *if_outgoing;
/** @bat_iv: B.A.T.M.A.N. IV private structure */
struct batadv_neigh_ifinfo_bat_iv bat_iv;
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
/** @bat_v: B.A.T.M.A.N. V private data */
struct batadv_neigh_ifinfo_bat_v bat_v;
#endif
/** @last_ttl: last received ttl from this neigh node */
u8 last_ttl;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in a RCU-safe manner */
struct rcu_head rcu;
};
#ifdef CONFIG_BATMAN_ADV_BLA
/**
* struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
*/
struct batadv_bcast_duplist_entry {
/** @orig: mac address of orig node orginating the broadcast */
u8 orig[ETH_ALEN];
/** @crc: crc32 checksum of broadcast payload */
__be32 crc;
/** @entrytime: time when the broadcast packet was received */
unsigned long entrytime;
};
#endif
/**
* enum batadv_counters - indices for traffic counters
*/
enum batadv_counters {
/** @BATADV_CNT_TX: transmitted payload traffic packet counter */
BATADV_CNT_TX,
/** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */
BATADV_CNT_TX_BYTES,
/**
* @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet
* counter
*/
BATADV_CNT_TX_DROPPED,
/** @BATADV_CNT_RX: received payload traffic packet counter */
BATADV_CNT_RX,
/** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */
BATADV_CNT_RX_BYTES,
/** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */
BATADV_CNT_FORWARD,
/**
* @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
*/
BATADV_CNT_FORWARD_BYTES,
/**
* @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet
* counter
*/
BATADV_CNT_MGMT_TX,
/**
* @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes
* counter
*/
BATADV_CNT_MGMT_TX_BYTES,
/**
* @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
*/
BATADV_CNT_MGMT_RX,
/**
* @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes
* counter
*/
BATADV_CNT_MGMT_RX_BYTES,
/** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */
BATADV_CNT_FRAG_TX,
/**
* @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
*/
BATADV_CNT_FRAG_TX_BYTES,
/** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */
BATADV_CNT_FRAG_RX,
/**
* @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
*/
BATADV_CNT_FRAG_RX_BYTES,
/** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */
BATADV_CNT_FRAG_FWD,
/**
* @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
*/
BATADV_CNT_FRAG_FWD_BYTES,
/**
* @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
*/
BATADV_CNT_TT_REQUEST_TX,
/** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */
BATADV_CNT_TT_REQUEST_RX,
/**
* @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet
* counter
*/
BATADV_CNT_TT_RESPONSE_TX,
/**
* @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
*/
BATADV_CNT_TT_RESPONSE_RX,
/**
* @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet
* counter
*/
BATADV_CNT_TT_ROAM_ADV_TX,
/**
* @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
*/
BATADV_CNT_TT_ROAM_ADV_RX,
#ifdef CONFIG_BATMAN_ADV_DAT
/**
* @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
*/
BATADV_CNT_DAT_GET_TX,
/** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */
BATADV_CNT_DAT_GET_RX,
/**
* @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
*/
BATADV_CNT_DAT_PUT_TX,
/** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */
BATADV_CNT_DAT_PUT_RX,
/**
* @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic
* packet counter
*/
BATADV_CNT_DAT_CACHED_REPLY_TX,
#endif
#ifdef CONFIG_BATMAN_ADV_NC
/**
* @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
*/
BATADV_CNT_NC_CODE,
/**
* @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes
* counter
*/
BATADV_CNT_NC_CODE_BYTES,
/**
* @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet
* counter
*/
BATADV_CNT_NC_RECODE,
/**
* @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes
* counter
*/
BATADV_CNT_NC_RECODE_BYTES,
/**
* @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc
* decoding
*/
BATADV_CNT_NC_BUFFER,
/**
* @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
*/
BATADV_CNT_NC_DECODE,
/**
* @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes
* counter
*/
BATADV_CNT_NC_DECODE_BYTES,
/**
* @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic
* packet counter
*/
BATADV_CNT_NC_DECODE_FAILED,
/**
* @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in
* promisc mode.
*/
BATADV_CNT_NC_SNIFFED,
#endif
/** @BATADV_CNT_NUM: number of traffic counters */
BATADV_CNT_NUM,
};
/**
* struct batadv_priv_tt - per mesh interface translation table data
*/
struct batadv_priv_tt {
/** @vn: translation table version number */
atomic_t vn;
/**
* @ogm_append_cnt: counter of number of OGMs containing the local tt
* diff
*/
atomic_t ogm_append_cnt;
/** @local_changes: changes registered in an originator interval */
atomic_t local_changes;
/**
* @changes_list: tracks tt local changes within an originator interval
*/
struct list_head changes_list;
/** @local_hash: local translation table hash table */
struct batadv_hashtable *local_hash;
/** @global_hash: global translation table hash table */
struct batadv_hashtable *global_hash;
/** @req_list: list of pending & unanswered tt_requests */
struct hlist_head req_list;
/**
* @roam_list: list of the last roaming events of each client limiting
* the number of roaming events to avoid route flapping
*/
struct list_head roam_list;
/** @changes_list_lock: lock protecting changes_list */
spinlock_t changes_list_lock;
/** @req_list_lock: lock protecting req_list */
spinlock_t req_list_lock;
/** @roam_list_lock: lock protecting roam_list */
spinlock_t roam_list_lock;
/** @last_changeset: last tt changeset this host has generated */
unsigned char *last_changeset;
/**
* @last_changeset_len: length of last tt changeset this host has
* generated
*/
s16 last_changeset_len;
/**
* @last_changeset_lock: lock protecting last_changeset &
* last_changeset_len
*/
spinlock_t last_changeset_lock;
/**
* @commit_lock: prevents from executing a local TT commit while reading
* the local table. The local TT commit is made up by two operations
* (data structure update and 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;
};
#ifdef CONFIG_BATMAN_ADV_BLA
/**
* struct batadv_priv_bla - per mesh interface bridge loope avoidance data
*/
struct batadv_priv_bla {
/** @num_requests: number of bla requests in flight */
atomic_t num_requests;
/**
* @claim_hash: hash table containing mesh nodes this host has claimed
*/
struct batadv_hashtable *claim_hash;
/**
* @backbone_hash: hash table containing all detected backbone gateways
*/
struct batadv_hashtable *backbone_hash;
/** @loopdetect_addr: MAC address used for own loopdetection frames */
u8 loopdetect_addr[ETH_ALEN];
/**
* @loopdetect_lasttime: time when the loopdetection frames were sent
*/
unsigned long loopdetect_lasttime;
/**
* @loopdetect_next: how many periods to wait for the next loopdetect
* process
*/
atomic_t loopdetect_next;
/**
* @bcast_duplist: recently received broadcast packets array (for
* broadcast duplicate suppression)
*/
struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
/**
* @bcast_duplist_curr: index of last broadcast packet added to
* bcast_duplist
*/
int bcast_duplist_curr;
/**
* @bcast_duplist_lock: lock protecting bcast_duplist &
* bcast_duplist_curr
*/
spinlock_t bcast_duplist_lock;
/** @claim_dest: local claim data (e.g. claim group) */
struct batadv_bla_claim_dst claim_dest;
/** @work: work queue callback item for cleanups & bla announcements */
struct delayed_work work;
};
#endif
#ifdef CONFIG_BATMAN_ADV_DEBUG
/**
* struct batadv_priv_debug_log - debug logging data
*/
struct batadv_priv_debug_log {
/** @log_buff: buffer holding the logs (ring bufer) */
char log_buff[BATADV_LOG_BUF_LEN];
/** @log_start: index of next character to read */
unsigned long log_start;
/** @log_end: index of next character to write */
unsigned long log_end;
/** @lock: lock protecting log_buff, log_start & log_end */
spinlock_t lock;
/** @queue_wait: log reader's wait queue */
wait_queue_head_t queue_wait;
};
#endif
/**
* struct batadv_priv_gw - per mesh interface gateway data
*/
struct batadv_priv_gw {
/** @gateway_list: list of available gateway nodes */
struct hlist_head gateway_list;
/** @list_lock: lock protecting gateway_list & curr_gw */
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
*/
struct batadv_priv_tvlv {
/**
* @container_list: list of registered tvlv containers to be sent with
* each OGM
*/
struct hlist_head container_list;
/** @handler_list: list of the various tvlv content handlers */
struct hlist_head handler_list;
/** @container_list_lock: protects tvlv container list access */
spinlock_t container_list_lock;
/** @handler_list_lock: protects handler list access */
spinlock_t handler_list_lock;
};
#ifdef CONFIG_BATMAN_ADV_DAT
/**
* struct batadv_priv_dat - per mesh interface DAT private data
*/
struct batadv_priv_dat {
/** @addr: node DAT address */
batadv_dat_addr_t addr;
/** @hash: hashtable representing the local ARP cache */
struct batadv_hashtable *hash;
/** @work: work queue callback item for cache purging */
struct delayed_work work;
};
#endif
#ifdef CONFIG_BATMAN_ADV_MCAST
/**
* struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
*/
struct batadv_mcast_querier_state {
/** @exists: whether a querier exists in the mesh */
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
*/
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;
/**
* @want_lists_lock: lock for protecting modifications to mcasts
* want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked)
*/
spinlock_t want_lists_lock;
/** @work: work queue callback item for multicast TT and TVLV updates */
struct delayed_work work;
};
#endif
/**
* struct batadv_priv_nc - per mesh interface network coding private data
*/
struct batadv_priv_nc {
/** @work: work queue callback item for cleanup */
struct delayed_work work;
/**
* @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
*
* This struct is supposed to represent a buffer unacked packet. However, since
* the purpose of the TP meter is to count the traffic only, there is no need to
* store the entire sk_buff, the starting offset and the length are enough
*/
struct batadv_tp_unacked {
/** @seqno: seqno of the unacked packet */
u32 seqno;
/** @len: length of the packet */
u16 len;
/** @list: list node for &batadv_tp_vars.unacked_list */
struct list_head list;
};
/**
* enum batadv_tp_meter_role - Modus in tp meter session
*/
enum batadv_tp_meter_role {
/** @BATADV_TP_RECEIVER: Initialized as receiver */
BATADV_TP_RECEIVER,
/** @BATADV_TP_SENDER: Initialized as sender */
BATADV_TP_SENDER
};
/**
* struct batadv_tp_vars - tp meter private variables per session
*/
struct batadv_tp_vars {
/** @list: list node for &bat_priv.tp_list */
struct hlist_node list;
/** @timer: timer for ack (receiver) and retry (sender) */
struct timer_list timer;
/** @bat_priv: pointer to the mesh object */
struct batadv_priv *bat_priv;
/** @start_time: start time in jiffies */
unsigned long start_time;
/** @other_end: mac address of remote */
u8 other_end[ETH_ALEN];
/** @role: receiver/sender modi */
enum batadv_tp_meter_role role;
/** @sending: sending binary semaphore: 1 if sending, 0 is not */
atomic_t sending;
/** @reason: reason for a stopped session */
enum batadv_tp_meter_reason reason;
/** @finish_work: work item for the finishing procedure */
struct delayed_work finish_work;
/** @test_length: test length in milliseconds */
u32 test_length;
/** @session: TP session identifier */
u8 session[2];
/** @icmp_uid: local ICMP "socket" index */
u8 icmp_uid;
/* sender variables */
/** @dec_cwnd: decimal part of the cwnd used during linear growth */
u16 dec_cwnd;
/** @cwnd: current size of the congestion window */
u32 cwnd;
/** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */
spinlock_t cwnd_lock;
/**
* @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
* connection switches to the Congestion Avoidance state
*/
u32 ss_threshold;
/** @last_acked: last acked byte */
atomic_t last_acked;
/** @last_sent: last sent byte, not yet acked */
u32 last_sent;
/** @tot_sent: amount of data sent/ACKed so far */
atomic64_t tot_sent;
/** @dup_acks: duplicate ACKs counter */
atomic_t dup_acks;
/** @fast_recovery: true if in Fast Recovery mode */
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;
/** @prerandom_lock: spinlock protecting access to prerandom_offset */
spinlock_t prerandom_lock;
/* receiver variables */
/** @last_recv: last in-order received packet */
u32 last_recv;
/** @unacked_list: list of unacked packets (meta-info only) */
struct list_head unacked_list;
/** @unacked_lock: protect unacked_list */
spinlock_t unacked_lock;
/** @last_recv_time: time time (jiffies) a msg was received */
unsigned long last_recv_time;
/** @refcount: number of context where the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_softif_vlan - per VLAN attributes set
*/
struct batadv_softif_vlan {
/** @bat_priv: pointer to the mesh object */
struct batadv_priv *bat_priv;
/** @vid: VLAN identifier */
unsigned short vid;
/** @kobj: kobject for sysfs vlan subdirectory */
struct kobject *kobj;
/** @ap_isolation: AP isolation state */
atomic_t ap_isolation; /* boolean */
/** @tt: TT private attributes (VLAN specific) */
struct batadv_vlan_tt tt;
/** @list: list node for &bat_priv.softif_vlan_list */
struct hlist_node list;
/**
* @refcount: number of context where this object is currently in use
*/
struct kref refcount;
/** @rcu: struct used for freeing in a RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data
*/
struct batadv_priv_bat_v {
/** @ogm_buff: buffer holding the OGM packet */
unsigned char *ogm_buff;
/** @ogm_buff_len: length of the OGM packet buffer */
int ogm_buff_len;
/** @ogm_seqno: OGM sequence number - used to identify each OGM */
atomic_t ogm_seqno;
/** @ogm_wq: workqueue used to schedule OGM transmissions */
struct delayed_work ogm_wq;
};
/**
* struct batadv_priv - per mesh interface data
*/
struct batadv_priv {
/**
* @mesh_state: current status of the mesh
* (inactive/active/deactivating)
*/
atomic_t mesh_state;
/** @soft_iface: net device which holds this struct as private data */
struct net_device *soft_iface;
/**
* @bat_counters: mesh internal traffic statistic counters (see
* batadv_counters)
*/
u64 __percpu *bat_counters; /* Per cpu counters */
/**
* @aggregated_ogms: bool indicating whether OGM aggregation is enabled
*/
atomic_t aggregated_ogms;
/** @bonding: bool indicating whether traffic bonding is enabled */
atomic_t bonding;
/**
* @fragmentation: bool indicating whether traffic fragmentation is
* enabled
*/
atomic_t fragmentation;
/**
* @packet_size_max: max packet size that can be transmitted via
* multiple fragmented skbs or a single frame if fragmentation is
* disabled
*/
atomic_t packet_size_max;
/**
* @frag_seqno: incremental counter to identify chains of egress
* fragments
*/
atomic_t frag_seqno;
#ifdef CONFIG_BATMAN_ADV_BLA
/**
* @bridge_loop_avoidance: bool indicating whether bridge loop
* avoidance is enabled
*/
atomic_t bridge_loop_avoidance;
#endif
#ifdef CONFIG_BATMAN_ADV_DAT
/**
* @distributed_arp_table: bool indicating whether distributed ARP table
* is enabled
*/
atomic_t distributed_arp_table;
#endif
#ifdef CONFIG_BATMAN_ADV_MCAST
/**
* @multicast_mode: Enable or disable multicast optimizations on this
* node's sender/originating side
*/
atomic_t multicast_mode;
#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 */
unsigned int 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;
/** @orig_hash: hash table containing mesh participants (orig nodes) */
spinlock_t forw_bat_list_lock;
/** @forw_bat_list_lock: lock protecting forw_bat_list */
spinlock_t forw_bcast_list_lock;
/** @forw_bcast_list_lock: lock protecting forw_bcast_list */
spinlock_t tp_list_lock;
/** @tp_list_lock: spinlock protecting @tp_list */
atomic_t tp_num;
/** @orig_work: work queue callback item for orig node purging */
struct delayed_work orig_work;
/**
* @primary_if: one of the hard-interfaces assigned to this mesh
* interface becomes the primary interface
*/
struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
/** @algo_ops: routing algorithm used by this mesh interface */
struct batadv_algo_ops *algo_ops;
/**
* @softif_vlan_list: a list of softif_vlan structs, one per VLAN
* created on top of the mesh interface represented by this object
*/
struct hlist_head softif_vlan_list;
/** @softif_vlan_list_lock: lock protecting softif_vlan_list */
spinlock_t softif_vlan_list_lock;
#ifdef CONFIG_BATMAN_ADV_BLA
/** @bla: bridge loope avoidance data */
struct batadv_priv_bla bla;
#endif
#ifdef CONFIG_BATMAN_ADV_DEBUG
/** @debug_log: holding debug logging relevant data */
struct batadv_priv_debug_log *debug_log;
#endif
/** @gw: gateway data */
struct batadv_priv_gw gw;
/** @tt: translation table data */
struct batadv_priv_tt tt;
/** @tvlv: type-version-length-value data */
struct batadv_priv_tvlv tvlv;
#ifdef CONFIG_BATMAN_ADV_DAT
/** @dat: distributed arp table data */
struct batadv_priv_dat dat;
#endif
#ifdef CONFIG_BATMAN_ADV_MCAST
/** @mcast: multicast data */
struct batadv_priv_mcast mcast;
#endif
#ifdef CONFIG_BATMAN_ADV_NC
/**
* @network_coding: bool indicating whether network coding is enabled
*/
atomic_t network_coding;
/** @nc: network coding data */
struct batadv_priv_nc nc;
#endif /* CONFIG_BATMAN_ADV_NC */
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
/** @bat_v: B.A.T.M.A.N. V per soft-interface private data */
struct batadv_priv_bat_v bat_v;
#endif
};
/**
* struct batadv_socket_client - layer2 icmp socket client data
*/
struct batadv_socket_client {
/**
* @queue_list: packet queue for packets destined for this socket client
*/
struct list_head queue_list;
/** @queue_len: number of packets in the packet queue (queue_list) */
unsigned int queue_len;
/** @index: socket client's index in the batadv_socket_client_hash */
unsigned char index;
/** @lock: lock protecting queue_list, queue_len & index */
spinlock_t lock;
/** @queue_wait: socket client's wait queue */
wait_queue_head_t queue_wait;
/** @bat_priv: pointer to soft_iface this client belongs to */
struct batadv_priv *bat_priv;
};
/**
* struct batadv_socket_packet - layer2 icmp packet for socket client
*/
struct batadv_socket_packet {
/** @list: list node for &batadv_socket_client.queue_list */
struct list_head list;
/** @icmp_len: size of the layer2 icmp packet */
size_t icmp_len;
/** @icmp_packet: layer2 icmp packet */
u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
};
#ifdef CONFIG_BATMAN_ADV_BLA
/**
* struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
*/
struct batadv_bla_backbone_gw {
/**
* @orig: originator address of backbone node (mac address of primary
* iface)
*/
u8 orig[ETH_ALEN];
/** @vid: vlan id this gateway was detected on */
unsigned short vid;
/** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */
struct hlist_node hash_entry;
/** @bat_priv: pointer to soft_iface this backbone gateway belongs to */
struct batadv_priv *bat_priv;
/** @lasttime: last time we heard of this backbone gw */
unsigned long lasttime;
/**
* @wait_periods: grace time for bridge forward delays and bla group
* forming at bootup phase - no bcast traffic is formwared until it has
* elapsed
*/
atomic_t wait_periods;
/**
* @request_sent: if this bool is set to true we are out of sync with
* this backbone gateway - no bcast traffic is formwared until the
* situation was resolved
*/
atomic_t request_sent;
/** @crc: crc16 checksum over all claims */
u16 crc;
/** @crc_lock: lock protecting crc */
spinlock_t crc_lock;
/** @report_work: work struct for reporting detected loops */
struct work_struct report_work;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_bla_claim - claimed non-mesh client structure
*/
struct batadv_bla_claim {
/** @addr: mac address of claimed non-mesh client */
u8 addr[ETH_ALEN];
/** @vid: vlan id this client was detected on */
unsigned short vid;
/** @backbone_gw: pointer to backbone gw claiming this client */
struct batadv_bla_backbone_gw *backbone_gw;
/** @backbone_lock: lock protecting backbone_gw pointer */
spinlock_t backbone_lock;
/** @lasttime: last time we heard of claim (locals only) */
unsigned long lasttime;
/** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */
struct hlist_node hash_entry;
/** @refcount: number of contexts the object is used */
struct rcu_head rcu;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct kref refcount;
};
#endif
/**
* struct batadv_tt_common_entry - tt local & tt global common data
*/
struct batadv_tt_common_entry {
/** @addr: mac address of non-mesh client */
u8 addr[ETH_ALEN];
/** @vid: VLAN identifier */
unsigned short vid;
/**
* @hash_entry: hlist node for &batadv_priv_tt.local_hash or for
* &batadv_priv_tt.global_hash
*/
struct hlist_node hash_entry;
/** @flags: various state handling flags (see batadv_tt_client_flags) */
u16 flags;
/** @added_at: timestamp used for purging stale tt common entries */
unsigned long added_at;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_tt_local_entry - translation table local entry data
*/
struct batadv_tt_local_entry {
/** @common: general translation table data */
struct batadv_tt_common_entry common;
/** @last_seen: timestamp used for purging stale tt local entries */
unsigned long last_seen;
/** @vlan: soft-interface vlan of the entry */
struct batadv_softif_vlan *vlan;
};
/**
* struct batadv_tt_global_entry - translation table global entry data
*/
struct batadv_tt_global_entry {
/** @common: general translation table data */
struct batadv_tt_common_entry common;
/** @orig_list: list of orig nodes announcing this non-mesh client */
struct hlist_head orig_list;
/** @orig_list_count: number of items in the orig_list */
atomic_t orig_list_count;
/** @list_lock: lock protecting orig_list */
spinlock_t list_lock;
/** @roam_at: time at which TT_GLOBAL_ROAM was set */
unsigned long roam_at;
};
/**
* struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
*/
struct batadv_tt_orig_list_entry {
/** @orig_node: pointer to orig node announcing this non-mesh client */
struct batadv_orig_node *orig_node;
/**
* @ttvn: translation table version number which added the non-mesh
* client
*/
u8 ttvn;
/** @flags: per orig entry TT sync flags */
u8 flags;
/** @list: list node for &batadv_tt_global_entry.orig_list */
struct hlist_node list;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_tt_change_node - structure for tt changes occurred
*/
struct batadv_tt_change_node {
/** @list: list node for &batadv_priv_tt.changes_list */
struct list_head list;
/** @change: holds the actual translation table diff data */
struct batadv_tvlv_tt_change change;
};
/**
* struct batadv_tt_req_node - data to keep track of the tt requests in flight
*/
struct batadv_tt_req_node {
/**
* @addr: mac address address of the originator this request was sent to
*/
u8 addr[ETH_ALEN];
/** @issued_at: timestamp used for purging stale tt requests */
unsigned long issued_at;
/** @refcount: number of contexts the object is used by */
struct kref refcount;
/** @list: list node for &batadv_priv_tt.req_list */
struct hlist_node list;
};
/**
* struct batadv_tt_roam_node - roaming client data
*/
struct batadv_tt_roam_node {
/** @addr: mac address of the client in the roaming phase */
u8 addr[ETH_ALEN];
/**
* @counter: number of allowed roaming events per client within a single
* OGM interval (changes are committed with each OGM)
*/
atomic_t counter;
/**
* @first_time: timestamp used for purging stale roaming node entries
*/
unsigned long first_time;
/** @list: list node for &batadv_priv_tt.roam_list */
struct list_head list;
};
/**
* struct batadv_nc_node - network coding node
*/
struct batadv_nc_node {
/** @list: next and prev pointer for the list handling */
struct list_head list;
/** @addr: the node's mac address */
u8 addr[ETH_ALEN];
/** @refcount: number of contexts the object is used by */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
/** @orig_node: pointer to corresponding orig node struct */
struct batadv_orig_node *orig_node;
/** @last_seen: timestamp of last ogm received from this node */
unsigned long last_seen;
};
/**
* struct batadv_nc_path - network coding path
*/
struct batadv_nc_path {
/** @hash_entry: next and prev pointer for the list handling */
struct hlist_node hash_entry;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
/** @refcount: number of contexts the object is used by */
struct kref refcount;
/** @packet_list: list of buffered packets for this path */
struct list_head packet_list;
/** @packet_list_lock: access lock for packet list */
spinlock_t packet_list_lock;
/** @next_hop: next hop (destination) of path */
u8 next_hop[ETH_ALEN];
/** @prev_hop: previous hop (source) of path */
u8 prev_hop[ETH_ALEN];
/** @last_valid: timestamp for last validation of path */
unsigned long last_valid;
};
/**
* struct batadv_nc_packet - network coding packet used when coding and
* decoding packets
*/
struct batadv_nc_packet {
/** @list: next and prev pointer for the list handling */
struct list_head list;
/** @packet_id: crc32 checksum of skb data */
__be32 packet_id;
/**
* @timestamp: field containing the info when the packet was added to
* path
*/
unsigned long timestamp;
/** @neigh_node: pointer to original next hop neighbor of skb */
struct batadv_neigh_node *neigh_node;
/** @skb: skb which can be encoded or used for decoding */
struct sk_buff *skb;
/** @nc_path: pointer to path this nc packet is attached to */
struct batadv_nc_path *nc_path;
};
/**
* struct batadv_skb_cb - control buffer structure used to store private data
* relevant to batman-adv in the skb->cb buffer in skbs.
*/
struct batadv_skb_cb {
/**
* @decoded: Marks a skb as decoded, which is checked when searching for
* coding opportunities in network-coding.c
*/
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
*/
struct batadv_forw_packet {
/**
* @list: list node for &batadv_priv.forw.bcast_list and
* &batadv_priv.forw.bat_list
*/
struct hlist_node list;
/** @cleanup_list: list node for purging functions */
struct hlist_node cleanup_list;
/** @send_time: execution time for delayed_work (packet sending) */
unsigned long send_time;
/**
* @own: bool for locally generated packets (local OGMs are re-scheduled
* after sending)
*/
u8 own;
/** @skb: bcast packet's skb buffer */
struct sk_buff *skb;
/** @packet_len: size of aggregated OGM packet inside the skb buffer */
u16 packet_len;
/** @direct_link_flags: direct link flags for aggregated OGM packets */
u32 direct_link_flags;
/** @num_packets: counter for aggregated OGMv1 packets */
u8 num_packets;
/** @delayed_work: work queue callback item for packet sending */
struct delayed_work delayed_work;
/**
* @if_incoming: pointer to incoming hard-iface or primary iface if
* locally generated packet
*/
struct batadv_hard_iface *if_incoming;
/**
* @if_outgoing: packet where the packet should be sent to, or NULL if
* unspecified
*/
struct batadv_hard_iface *if_outgoing;
/** @queue_left: The queue (counter) this packet was applied to */
atomic_t *queue_left;
};
/**
* struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
*/
struct batadv_algo_iface_ops {
/**
* @activate: start routing mechanisms when hard-interface is brought up
* (optional)
*/
void (*activate)(struct batadv_hard_iface *hard_iface);
/** @enable: init routing info when hard-interface is enabled */
int (*enable)(struct batadv_hard_iface *hard_iface);
/** @disable: de-init routing info when hard-interface is disabled */
void (*disable)(struct batadv_hard_iface *hard_iface);
/**
* @update_mac: (re-)init mac addresses of the protocol information
* belonging to this hard-interface
*/
void (*update_mac)(struct batadv_hard_iface *hard_iface);
/** @primary_set: called when primary interface is selected / changed */
void (*primary_set)(struct batadv_hard_iface *hard_iface);
};
/**
* struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
*/
struct batadv_algo_neigh_ops {
/** @hardif_init: called on creation of single hop entry (optional) */
void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
/**
* @cmp: compare the metrics of two neighbors for their respective
* outgoing interfaces
*/
int (*cmp)(struct batadv_neigh_node *neigh1,
struct batadv_hard_iface *if_outgoing1,
struct batadv_neigh_node *neigh2,
struct batadv_hard_iface *if_outgoing2);
/**
* @is_similar_or_better: check if neigh1 is equally similar or better
* than neigh2 for their respective outgoing interface from the metric
* prospective
*/
bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
struct batadv_hard_iface *if_outgoing1,
struct batadv_neigh_node *neigh2,
struct batadv_hard_iface *if_outgoing2);
#ifdef CONFIG_BATMAN_ADV_DEBUGFS
/** @print: print the single hop neighbor list (optional) */
void (*print)(struct batadv_priv *priv, struct seq_file *seq);
#endif
/** @dump: dump neighbors to a netlink socket (optional) */
void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
struct batadv_priv *priv,
struct batadv_hard_iface *hard_iface);
};
/**
* struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
*/
struct batadv_algo_orig_ops {
/**
* @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,
unsigned 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,
unsigned int max_if_num, unsigned 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);
};
/**
* struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific)
*/
struct batadv_algo_gw_ops {
/** @init_sel_class: initialize GW selection class (optional) */
void (*init_sel_class)(struct batadv_priv *bat_priv);
/**
* @store_sel_class: parse and stores a new GW selection class
* (optional)
*/
ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff,
size_t count);
/** @show_sel_class: prints the current GW selection class (optional) */
ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff);
/**
* @get_best_gw_node: select the best GW from the list of available
* nodes (optional)
*/
struct batadv_gw_node *(*get_best_gw_node)
(struct batadv_priv *bat_priv);
/**
* @is_eligible: check if a newly discovered GW is a potential candidate
* for the election as best GW (optional)
*/
bool (*is_eligible)(struct batadv_priv *bat_priv,
struct batadv_orig_node *curr_gw_orig,
struct batadv_orig_node *orig_node);
#ifdef CONFIG_BATMAN_ADV_DEBUGFS
/** @print: print the gateway table (optional) */
void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq);
#endif
/** @dump: dump gateways to a netlink socket (optional) */
void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
struct batadv_priv *priv);
};
/**
* struct batadv_algo_ops - mesh algorithm callbacks
*/
struct batadv_algo_ops {
/** @list: list node for the batadv_algo_list */
struct hlist_node list;
/** @name: name of the algorithm */
char *name;
/** @iface: callbacks related to interface handling */
struct batadv_algo_iface_ops iface;
/** @neigh: callbacks related to neighbors handling */
struct batadv_algo_neigh_ops neigh;
/** @orig: callbacks related to originators handling */
struct batadv_algo_orig_ops orig;
/** @gw: callbacks related to GW mode */
struct batadv_algo_gw_ops gw;
};
/**
* struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
* is used to stored ARP entries needed for the global DAT cache
*/
struct batadv_dat_entry {
/** @ip: the IPv4 corresponding to this DAT/ARP entry */
__be32 ip;
/** @mac_addr: the MAC address associated to the stored IPv4 */
u8 mac_addr[ETH_ALEN];
/** @vid: the vlan ID associated to this entry */
unsigned short vid;
/**
* @last_update: time in jiffies when this entry was refreshed last time
*/
unsigned long last_update;
/** @hash_entry: hlist node for &batadv_priv_dat.hash */
struct hlist_node hash_entry;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* struct batadv_hw_addr - a list entry for a MAC address
*/
struct batadv_hw_addr {
/** @list: list node for the linking of entries */
struct hlist_node list;
/** @addr: the MAC address of this list entry */
unsigned char addr[ETH_ALEN];
};
/**
* struct batadv_dat_candidate - candidate destination for DAT operations
*/
struct batadv_dat_candidate {
/**
* @type: the type of the selected candidate. It can one of the
* following:
* - BATADV_DAT_CANDIDATE_NOT_FOUND
* - BATADV_DAT_CANDIDATE_ORIG
*/
int type;
/**
* @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to
* the corresponding originator node structure
*/
struct batadv_orig_node *orig_node;
};
/**
* struct batadv_tvlv_container - container for tvlv appended to OGMs
*/
struct batadv_tvlv_container {
/** @list: hlist node for &batadv_priv_tvlv.container_list */
struct hlist_node list;
/** @tvlv_hdr: tvlv header information needed to construct the tvlv */
struct batadv_tvlv_hdr tvlv_hdr;
/** @refcount: number of contexts the object is used */
struct kref refcount;
};
/**
* struct batadv_tvlv_handler - handler for specific tvlv type and version
*/
struct batadv_tvlv_handler {
/** @list: hlist node for &batadv_priv_tvlv.handler_list */
struct hlist_node list;
/**
* @ogm_handler: handler callback which is given the tvlv payload to
* process on incoming OGM packets
*/
void (*ogm_handler)(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig,
u8 flags, void *tvlv_value, u16 tvlv_value_len);
/**
* @unicast_handler: handler callback which is given the tvlv payload to
* process on incoming unicast tvlv packets
*/
int (*unicast_handler)(struct batadv_priv *bat_priv,
u8 *src, u8 *dst,
void *tvlv_value, u16 tvlv_value_len);
/** @type: tvlv type this handler feels responsible for */
u8 type;
/** @version: tvlv version this handler feels responsible for */
u8 version;
/** @flags: tvlv handler flags */
u8 flags;
/** @refcount: number of contexts the object is used */
struct kref refcount;
/** @rcu: struct used for freeing in an RCU-safe manner */
struct rcu_head rcu;
};
/**
* enum batadv_tvlv_handler_flags - tvlv handler flags definitions
*/
enum batadv_tvlv_handler_flags {
/**
* @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function
* will call this handler even if its type was not found (with no data)
*/
BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
/**
* @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the
* API marks a handler as being called, so it won't be called if the
* BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
*/
BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
};
/**
* struct batadv_store_mesh_work - Work queue item to detach add/del interface
* from sysfs locks
*/
struct batadv_store_mesh_work {
/**
* @net_dev: netdevice to add/remove to/from batman-adv soft-interface
*/
struct net_device *net_dev;
/** @soft_iface_name: name of soft-interface to modify */
char soft_iface_name[IFNAMSIZ];
/** @work: work queue item */
struct work_struct work;
};
#endif /* _NET_BATMAN_ADV_TYPES_H_ */
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