/* Copyright (C) 2007-2016 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/batman_adv.h>
#include "packet.h"
struct seq_file;
#ifdef [31mCONFIG_BATMAN_ADV_DAT[0m
/**
* 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
* @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 = 0,
BATADV_DHCP_TO_SERVER,
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
* @ogm_buff: buffer holding the OGM packet
* @ogm_buff_len: length of the OGM packet buffer
* @ogm_seqno: OGM sequence number - used to identify each OGM
*/
struct batadv_hard_iface_bat_iv {
unsigned char *ogm_buff;
int ogm_buff_len;
atomic_t ogm_seqno;
};
/**
* 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 = BIT(0),
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 {
atomic_t elp_interval;
atomic_t elp_seqno;
struct sk_buff *elp_skb;
struct delayed_work elp_wq;
atomic_t throughput_override;
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 = BIT(0),
BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
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 {
struct list_head list;
s16 if_num;
char if_status;
u8 num_bcasts;
u32 wifi_flags;
struct net_device *net_dev;
struct kobject *hardif_obj;
struct kref refcount;
struct packet_type batman_adv_ptype;
struct net_device *soft_iface;
struct rcu_head rcu;
struct batadv_hard_iface_bat_iv bat_iv;
#ifdef [31mCONFIG_BATMAN_ADV_BATMAN_V[0m
struct batadv_hard_iface_bat_v bat_v;
#endif
struct dentry *debug_dir;
struct hlist_head neigh_list;
/* neigh_list_lock protects: 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 {
struct hlist_node list;
struct batadv_hard_iface *if_outgoing;
struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
u32 last_real_seqno;
u8 last_ttl;
u32 last_seqno_forwarded;
unsigned long batman_seqno_reset;
struct kref refcount;
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 {
struct hlist_head fragment_list;
spinlock_t lock; /* protects fragment_list */
unsigned long timestamp;
u16 seqno;
u16 size;
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 {
struct hlist_node list;
struct sk_buff *skb;
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 {
u32 crc;
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 {
unsigned short vid;
struct batadv_vlan_tt tt;
struct hlist_node list;
struct kref refcount;
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 {
unsigned long *bcast_own;
u8 *bcast_own_sum;
/* ogm_cnt_lock protects: 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
* @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 {
u8 orig[ETH_ALEN];
struct hlist_head ifinfo_list;
struct batadv_orig_ifinfo *last_bonding_candidate;
#ifdef [31mCONFIG_BATMAN_ADV_DAT[0m
batadv_dat_addr_t dat_addr;
#endif
unsigned long last_seen;
unsigned long bcast_seqno_reset;
#ifdef [31mCONFIG_BATMAN_ADV_MCAST[0m
/* synchronizes mcast tvlv specific orig changes */
spinlock_t mcast_handler_lock;
u8 mcast_flags;
struct hlist_node mcast_want_all_unsnoopables_node;
struct hlist_node mcast_want_all_ipv4_node;
struct hlist_node mcast_want_all_ipv6_node;
#endif
unsigned long capabilities;
unsigned long capa_initialized;
atomic_t last_ttvn;
unsigned char *tt_buff;
s16 tt_buff_len;
spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
/* prevents from changing the table while reading it */
spinlock_t tt_lock;
DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
u32 last_bcast_seqno;
struct hlist_head neigh_list;
/* neigh_list_lock protects: neigh_list, ifinfo_list,
* last_bonding_candidate and router
*/
spinlock_t neigh_list_lock;
struct hlist_node hash_entry;
struct batadv_priv *bat_priv;
/* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
spinlock_t bcast_seqno_lock;
struct kref refcount;
struct rcu_head rcu;
#ifdef [31mCONFIG_BATMAN_ADV_NC[0m
struct list_head in_coding_list;
struct list_head out_coding_list;
spinlock_t in_coding_list_lock; /* Protects in_coding_list */
spinlock_t out_coding_list_lock; /* Protects out_coding_list */
#endif
struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
struct hlist_head vlan_list;
spinlock_t vlan_list_lock; /* protects vlan_list */
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,
BATADV_ORIG_CAPA_HAS_NC,
BATADV_ORIG_CAPA_HAS_TT,
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 {
struct hlist_node list;
struct batadv_orig_node *orig_node;
u32 bandwidth_down;
u32 bandwidth_up;
struct kref refcount;
struct rcu_head rcu;
};
DECLARE_EWMA(throughput, 1024, 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 {
struct ewma_throughput throughput;
u32 elp_interval;
u32 elp_latest_seqno;
unsigned long last_unicast_tx;
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 {
struct hlist_node list;
u8 addr[ETH_ALEN];
u8 orig[ETH_ALEN];
struct batadv_hard_iface *if_incoming;
unsigned long last_seen;
#ifdef [31mCONFIG_BATMAN_ADV_BATMAN_V[0m
struct batadv_hardif_neigh_node_bat_v bat_v;
#endif
struct kref refcount;
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 {
struct hlist_node list;
struct batadv_orig_node *orig_node;
u8 addr[ETH_ALEN];
struct hlist_head ifinfo_list;
spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */
struct batadv_hard_iface *if_incoming;
unsigned long last_seen;
struct batadv_hardif_neigh_node *hardif_neigh;
struct kref refcount;
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 {
u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
u8 tq_index;
u8 tq_avg;
DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
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 {
u32 throughput;
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 {
struct hlist_node list;
struct batadv_hard_iface *if_outgoing;
struct batadv_neigh_ifinfo_bat_iv bat_iv;
#ifdef [31mCONFIG_BATMAN_ADV_BATMAN_V[0m
struct batadv_neigh_ifinfo_bat_v bat_v;
#endif
u8 last_ttl;
struct kref refcount;
struct rcu_head rcu;
};
#ifdef [31mCONFIG_BATMAN_ADV_BLA[0m
/**
* 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 {
u8 orig[ETH_ALEN];
__be32 crc;
unsigned long entrytime;
};
#endif
/**
* enum batadv_counters - indices for traffic counters
* @BATADV_CNT_TX: transmitted payload traffic packet counter
* @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
* @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
* @BATADV_CNT_RX: received payload traffic packet counter
* @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
* @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
* @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
* @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
* @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
* @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
* @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
* @BATADV_CNT_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,
BATADV_CNT_TX_BYTES,
BATADV_CNT_TX_DROPPED,
BATADV_CNT_RX,
BATADV_CNT_RX_BYTES,
BATADV_CNT_FORWARD,
BATADV_CNT_FORWARD_BYTES,
BATADV_CNT_MGMT_TX,
BATADV_CNT_MGMT_TX_BYTES,
BATADV_CNT_MGMT_RX,
BATADV_CNT_MGMT_RX_BYTES,
BATADV_CNT_FRAG_TX,
BATADV_CNT_FRAG_TX_BYTES,
BATADV_CNT_FRAG_RX,
BATADV_CNT_FRAG_RX_BYTES,
BATADV_CNT_FRAG_FWD,
BATADV_CNT_FRAG_FWD_BYTES,
BATADV_CNT_TT_REQUEST_TX,
BATADV_CNT_TT_REQUEST_RX,
BATADV_CNT_TT_RESPONSE_TX,
BATADV_CNT_TT_RESPONSE_RX,
BATADV_CNT_TT_ROAM_ADV_TX,
BATADV_CNT_TT_ROAM_ADV_RX,
#ifdef [31mCONFIG_BATMAN_ADV_DAT[0m
BATADV_CNT_DAT_GET_TX,
BATADV_CNT_DAT_GET_RX,
BATADV_CNT_DAT_PUT_TX,
BATADV_CNT_DAT_PUT_RX,
BATADV_CNT_DAT_CACHED_REPLY_TX,
#endif
#ifdef [31mCONFIG_BATMAN_ADV_NC[0m
BATADV_CNT_NC_CODE,
BATADV_CNT_NC_CODE_BYTES,
BATADV_CNT_NC_RECODE,
BATADV_CNT_NC_RECODE_BYTES,
BATADV_CNT_NC_BUFFER,
BATADV_CNT_NC_DECODE,
BATADV_CNT_NC_DECODE_BYTES,
BATADV_CNT_NC_DECODE_FAILED,
BATADV_CNT_NC_SNIFFED,
#endif
BATADV_CNT_NUM,
};
/**
* struct batadv_priv_tt - per mesh interface translation table data
* @vn: translation table version number
* @ogm_append_cnt: counter of number of OGMs containing the local tt diff
* @local_changes: changes registered in an originator interval
* @changes_list: tracks tt local changes within an originator interval
* @local_hash: local translation table hash table
* @global_hash: global translation table hash table
* @req_list: list of pending & unanswered tt_requests
* @roam_list: list of the last roaming events of each client limiting the
* number of roaming events to avoid route flapping
* @changes_list_lock: lock protecting changes_list
* @req_list_lock: lock protecting req_list
* @roam_list_lock: lock protecting roam_list
* @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 {
atomic_t vn;
atomic_t ogm_append_cnt;
atomic_t local_changes;
struct list_head changes_list;
struct batadv_hashtable *local_hash;
struct batadv_hashtable *global_hash;
struct hlist_head req_list;
struct list_head roam_list;
spinlock_t changes_list_lock; /* protects changes */
spinlock_t req_list_lock; /* protects req_list */
spinlock_t roam_list_lock; /* protects roam_list */
unsigned char *last_changeset;
s16 last_changeset_len;
/* protects last_changeset & last_changeset_len */
spinlock_t last_changeset_lock;
/* prevents from executing a commit while reading the table */
spinlock_t commit_lock;
struct delayed_work work;
};
#ifdef [31mCONFIG_BATMAN_ADV_BLA[0m
/**
* 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 {
atomic_t num_requests;
struct batadv_hashtable *claim_hash;
struct batadv_hashtable *backbone_hash;
u8 loopdetect_addr[ETH_ALEN];
unsigned long loopdetect_lasttime;
atomic_t loopdetect_next;
struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
int bcast_duplist_curr;
/* protects bcast_duplist & bcast_duplist_curr */
spinlock_t bcast_duplist_lock;
struct batadv_bla_claim_dst claim_dest;
struct delayed_work work;
};
#endif
#ifdef [31mCONFIG_BATMAN_ADV_DEBUG[0m
/**
* 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 {
char log_buff[BATADV_LOG_BUF_LEN];
unsigned long log_start;
unsigned long log_end;
spinlock_t lock; /* protects log_buff, log_start and log_end */
wait_queue_head_t queue_wait;
};
#endif
/**
* struct batadv_priv_gw - per mesh interface gateway data
* @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 {
struct hlist_head gateway_list;
spinlock_t list_lock; /* protects gateway_list & curr_gw */
struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
atomic_t mode;
atomic_t sel_class;
atomic_t bandwidth_down;
atomic_t bandwidth_up;
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 {
struct hlist_head container_list;
struct hlist_head handler_list;
spinlock_t container_list_lock; /* protects container_list */
spinlock_t handler_list_lock; /* protects handler_list */
};
#ifdef [31mCONFIG_BATMAN_ADV_DAT[0m
/**
* 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 {
batadv_dat_addr_t addr;
struct batadv_hashtable *hash;
struct delayed_work work;
};
#endif
#ifdef [31mCONFIG_BATMAN_ADV_MCAST[0m
/**
* 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 {
bool exists;
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 {
struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */
struct hlist_head want_all_unsnoopables_list;
struct hlist_head want_all_ipv4_list;
struct hlist_head want_all_ipv6_list;
struct batadv_mcast_querier_state querier_ipv4;
struct batadv_mcast_querier_state querier_ipv6;
u8 flags;
bool enabled;
bool bridged;
atomic_t num_disabled;
atomic_t num_want_all_unsnoopables;
atomic_t num_want_all_ipv4;
atomic_t num_want_all_ipv6;
/* protects want_all_{unsnoopables,ipv4,ipv6}_list */
spinlock_t want_lists_lock;
struct delayed_work work;
};
#endif
/**
* struct batadv_priv_nc - per mesh interface network coding private data
* @work: work queue callback item for cleanup
* @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
* @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
* @max_fwd_delay: maximum packet forward delay to allow coding of packets
* @max_buffer_time: buffer time for sniffed packets used to decoding
* @timestamp_fwd_flush: timestamp of last forward packet queue flush
* @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
* @coding_hash: Hash table used to buffer skbs while waiting for another
* incoming skb to code it with. Skbs are added to the buffer just before being
* forwarded in routing.c
* @decoding_hash: Hash table used to buffer skbs that might be needed to decode
* a received coded skb. The buffer is used for 1) skbs arriving on the
* soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
* forwarded by batman-adv.
*/
struct batadv_priv_nc {
struct delayed_work work;
struct dentry *debug_dir;
u8 min_tq;
u32 max_fwd_delay;
u32 max_buffer_time;
unsigned long timestamp_fwd_flush;
unsigned long timestamp_sniffed_purge;
struct batadv_hashtable *coding_hash;
struct batadv_hashtable *decoding_hash;
};
/**
* struct batadv_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 {
u32 seqno;
u16 len;
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,
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 {
struct hlist_node list;
struct timer_list timer;
struct batadv_priv *bat_priv;
unsigned long start_time;
u8 other_end[ETH_ALEN];
enum batadv_tp_meter_role role;
atomic_t sending;
enum batadv_tp_meter_reason reason;
struct delayed_work finish_work;
u32 test_length;
u8 session[2];
u8 icmp_uid;
/* sender variables */
u16 dec_cwnd;
u32 cwnd;
spinlock_t cwnd_lock; /* Protects cwnd & dec_cwnd */
u32 ss_threshold;
atomic_t last_acked;
u32 last_sent;
atomic64_t tot_sent;
atomic_t dup_acks;
bool fast_recovery;
u32 recover;
u32 rto;
u32 srtt;
u32 rttvar;
wait_queue_head_t more_bytes;
u32 prerandom_offset;
spinlock_t prerandom_lock; /* Protects prerandom_offset */
/* receiver variables */
u32 last_recv;
struct list_head unacked_list;
spinlock_t unacked_lock; /* Protects unacked_list */
unsigned long last_recv_time;
struct kref refcount;
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 {
struct batadv_priv *bat_priv;
unsigned short vid;
struct kobject *kobj;
atomic_t ap_isolation; /* boolean */
struct batadv_vlan_tt tt;
struct hlist_node list;
struct kref refcount;
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 {
unsigned char *ogm_buff;
int ogm_buff_len;
atomic_t ogm_seqno;
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
* @stats: structure holding the data for the ndo_get_stats() call
* @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
* @aggregated_ogms: bool indicating whether OGM aggregation is enabled
* @bonding: bool indicating whether traffic bonding is enabled
* @fragmentation: bool indicating whether traffic fragmentation is enabled
* @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 {
atomic_t mesh_state;
struct net_device *soft_iface;
struct net_device_stats stats;
u64 __percpu *bat_counters; /* Per cpu counters */
atomic_t aggregated_ogms;
atomic_t bonding;
atomic_t fragmentation;
atomic_t packet_size_max;
atomic_t frag_seqno;
#ifdef [31mCONFIG_BATMAN_ADV_BLA[0m
atomic_t bridge_loop_avoidance;
#endif
#ifdef [31mCONFIG_BATMAN_ADV_DAT[0m
atomic_t distributed_arp_table;
#endif
#ifdef [31mCONFIG_BATMAN_ADV_MCAST[0m
atomic_t multicast_mode;
#endif
atomic_t orig_interval;
atomic_t hop_penalty;
#ifdef [31mCONFIG_BATMAN_ADV_DEBUG[0m
atomic_t log_level;
#endif
u32 isolation_mark;
u32 isolation_mark_mask;
atomic_t bcast_seqno;
atomic_t bcast_queue_left;
atomic_t batman_queue_left;
char num_ifaces;
struct kobject *mesh_obj;
struct dentry *debug_dir;
struct hlist_head forw_bat_list;
struct hlist_head forw_bcast_list;
struct hlist_head tp_list;
struct batadv_hashtable *orig_hash;
spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
spinlock_t tp_list_lock; /* protects tp_list */
atomic_t tp_num;
struct delayed_work orig_work;
struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
struct batadv_algo_ops *algo_ops;
struct hlist_head softif_vlan_list;
spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
#ifdef [31mCONFIG_BATMAN_ADV_BLA[0m
struct batadv_priv_bla bla;
#endif
#ifdef [31mCONFIG_BATMAN_ADV_DEBUG[0m
struct batadv_priv_debug_log *debug_log;
#endif
struct batadv_priv_gw gw;
struct batadv_priv_tt tt;
struct batadv_priv_tvlv tvlv;
#ifdef [31mCONFIG_BATMAN_ADV_DAT[0m
struct batadv_priv_dat dat;
#endif
#ifdef [31mCONFIG_BATMAN_ADV_MCAST[0m
struct batadv_priv_mcast mcast;
#endif
#ifdef [31mCONFIG_BATMAN_ADV_NC[0m
atomic_t network_coding;
struct batadv_priv_nc nc;
#endif /* CONFIG_BATMAN_ADV_NC */
#ifdef [31mCONFIG_BATMAN_ADV_BATMAN_V[0m
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 {
struct list_head queue_list;
unsigned int queue_len;
unsigned char index;
spinlock_t lock; /* protects queue_list, queue_len & index */
wait_queue_head_t queue_wait;
struct batadv_priv *bat_priv;
};
/**
* struct batadv_socket_packet - layer2 icmp packet for socket client
* @list: list node for batadv_socket_client::queue_list
* @icmp_len: size of the layer2 icmp packet
* @icmp_packet: layer2 icmp packet
*/
struct batadv_socket_packet {
struct list_head list;
size_t icmp_len;
u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
};
#ifdef [31mCONFIG_BATMAN_ADV_BLA[0m
/**
* 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 {
u8 orig[ETH_ALEN];
unsigned short vid;
struct hlist_node hash_entry;
struct batadv_priv *bat_priv;
unsigned long lasttime;
atomic_t wait_periods;
atomic_t request_sent;
u16 crc;
spinlock_t crc_lock; /* protects crc */
struct work_struct report_work;
struct kref refcount;
struct rcu_head rcu;
};
/**
* struct batadv_bla_claim - claimed non-mesh client structure
* @addr: mac address of claimed non-mesh client
* @vid: vlan id this client was detected on
* @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 {
u8 addr[ETH_ALEN];
unsigned short vid;
struct batadv_bla_backbone_gw *backbone_gw;
spinlock_t backbone_lock; /* protects backbone_gw */
unsigned long lasttime;
struct hlist_node hash_entry;
struct rcu_head rcu;
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 {
u8 addr[ETH_ALEN];
unsigned short vid;
struct hlist_node hash_entry;
u16 flags;
unsigned long added_at;
struct kref refcount;
struct rcu_head rcu;
};
/**
* struct batadv_tt_local_entry - translation table local entry data
* @common: general translation table data
* @last_seen: timestamp used for purging stale tt local entries
* @vlan: soft-interface vlan of the entry
*/
struct batadv_tt_local_entry {
struct batadv_tt_common_entry common;
unsigned long last_seen;
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 {
struct batadv_tt_common_entry common;
struct hlist_head orig_list;
atomic_t orig_list_count;
spinlock_t list_lock; /* protects orig_list */
unsigned long roam_at;
};
/**
* struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
* @orig_node: pointer to orig node announcing this non-mesh client
* @ttvn: translation table version number which added the non-mesh client
* @list: list node for batadv_tt_global_entry::orig_list
* @refcount: number of contexts the object is used
* @rcu: struct used for freeing in an RCU-safe manner
*/
struct batadv_tt_orig_list_entry {
struct batadv_orig_node *orig_node;
u8 ttvn;
struct hlist_node list;
struct kref refcount;
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 {
struct list_head list;
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 {
u8 addr[ETH_ALEN];
unsigned long issued_at;
struct kref refcount;
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 {
u8 addr[ETH_ALEN];
atomic_t counter;
unsigned long first_time;
struct list_head list;
};
/**
* struct batadv_nc_node - network coding node
* @list: next and prev pointer for the list handling
* @addr: the node's mac address
* @refcount: number of contexts the object is used by
* @rcu: struct used for freeing in an RCU-safe manner
* @orig_node: pointer to corresponding orig node struct
* @last_seen: timestamp of last ogm received from this node
*/
struct batadv_nc_node {
struct list_head list;
u8 addr[ETH_ALEN];
struct kref refcount;
struct rcu_head rcu;
struct batadv_orig_node *orig_node;
unsigned long last_seen;
};
/**
* struct batadv_nc_path - network coding path
* @hash_entry: next and prev pointer for the list handling
* @rcu: struct used for freeing in an RCU-safe manner
* @refcount: number of contexts the object is used by
* @packet_list: list of buffered packets for this path
* @packet_list_lock: access lock for packet list
* @next_hop: next hop (destination) of path
* @prev_hop: previous hop (source) of path
* @last_valid: timestamp for last validation of path
*/
struct batadv_nc_path {
struct hlist_node hash_entry;
struct rcu_head rcu;
struct kref refcount;
struct list_head packet_list;
spinlock_t packet_list_lock; /* Protects packet_list */
u8 next_hop[ETH_ALEN];
u8 prev_hop[ETH_ALEN];
unsigned long last_valid;
};
/**
* struct batadv_nc_packet - network coding packet used when coding and
* decoding packets
* @list: next and prev pointer for the list handling
* @packet_id: crc32 checksum of skb data
* @timestamp: field containing the info when the packet was added to path
* @neigh_node: pointer to original next hop neighbor of skb
* @skb: skb which can be encoded or used for decoding
* @nc_path: pointer to path this nc packet is attached to
*/
struct batadv_nc_packet {
struct list_head list;
__be32 packet_id;
unsigned long timestamp;
struct batadv_neigh_node *neigh_node;
struct sk_buff *skb;
struct batadv_nc_path *nc_path;
};
/**
* 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
*/
struct batadv_skb_cb {
bool decoded;
};
/**
* 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 bcast packet retransmission
* @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 {
struct hlist_node list;
struct hlist_node cleanup_list;
unsigned long send_time;
u8 own;
struct sk_buff *skb;
u16 packet_len;
u32 direct_link_flags;
u8 num_packets;
struct delayed_work delayed_work;
struct batadv_hard_iface *if_incoming;
struct batadv_hard_iface *if_outgoing;
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 {
void (*activate)(struct batadv_hard_iface *hard_iface);
int (*enable)(struct batadv_hard_iface *hard_iface);
void (*disable)(struct batadv_hard_iface *hard_iface);
void (*update_mac)(struct batadv_hard_iface *hard_iface);
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 {
void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
int (*cmp)(struct batadv_neigh_node *neigh1,
struct batadv_hard_iface *if_outgoing1,
struct batadv_neigh_node *neigh2,
struct batadv_hard_iface *if_outgoing2);
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 [31mCONFIG_BATMAN_ADV_DEBUGFS[0m
void (*print)(struct batadv_priv *priv, struct seq_file *seq);
#endif
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)
* @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 {
void (*free)(struct batadv_orig_node *orig_node);
int (*add_if)(struct batadv_orig_node *orig_node, int max_if_num);
int (*del_if)(struct batadv_orig_node *orig_node, int max_if_num,
int del_if_num);
#ifdef [31mCONFIG_BATMAN_ADV_DEBUGFS[0m
void (*print)(struct batadv_priv *priv, struct seq_file *seq,
struct batadv_hard_iface *hard_iface);
#endif
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)
* @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 {
ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff,
size_t count);
ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff);
struct batadv_gw_node *(*get_best_gw_node)
(struct batadv_priv *bat_priv);
bool (*is_eligible)(struct batadv_priv *bat_priv,
struct batadv_orig_node *curr_gw_orig,
struct batadv_orig_node *orig_node);
#ifdef [31mCONFIG_BATMAN_ADV_DEBUGFS[0m
void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq);
#endif
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 {
struct hlist_node list;
char *name;
struct batadv_algo_iface_ops iface;
struct batadv_algo_neigh_ops neigh;
struct batadv_algo_orig_ops orig;
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 {
__be32 ip;
u8 mac_addr[ETH_ALEN];
unsigned short vid;
unsigned long last_update;
struct hlist_node hash_entry;
struct kref refcount;
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 {
struct hlist_node list;
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 {
int type;
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 {
struct hlist_node list;
struct batadv_tvlv_hdr tvlv_hdr;
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 {
struct hlist_node list;
void (*ogm_handler)(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig,
u8 flags, void *tvlv_value, u16 tvlv_value_len);
int (*unicast_handler)(struct batadv_priv *bat_priv,
u8 *src, u8 *dst,
void *tvlv_value, u16 tvlv_value_len);
u8 type;
u8 version;
u8 flags;
struct kref refcount;
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 = BIT(1),
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 {
struct net_device *net_dev;
char soft_iface_name[IFNAMSIZ];
struct work_struct work;
};
#endif /* _NET_BATMAN_ADV_TYPES_H_ */