mirror of
https://github.com/torvalds/linux.git
synced 2024-11-02 10:11:36 +00:00
da6b8c20a5
Instead of handling icmp packets only up to length of icmp_packet_rr, the code should handle any icmp length size. Therefore the length truncating is moved to when the packet is actually sent to userspace (this does not support lengths longer than icmp_packet_rr yet). Longer packets are forwarded without truncating. This patch also cleans up some parts where the icmp header struct could be used instead of other icmp_packet(_rr) structs to make the code more readable. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
1134 lines
41 KiB
C
1134 lines
41 KiB
C
/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
|
|
*
|
|
* Marek Lindner, Simon Wunderlich
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA
|
|
*/
|
|
|
|
#ifndef _NET_BATMAN_ADV_TYPES_H_
|
|
#define _NET_BATMAN_ADV_TYPES_H_
|
|
|
|
#include "packet.h"
|
|
#include "bitarray.h"
|
|
#include <linux/kernel.h>
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
|
|
/* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
|
|
* BATADV_DAT_ADDR_MAX is changed as well.
|
|
*
|
|
* *Please be careful: batadv_dat_addr_t must be UNSIGNED*
|
|
*/
|
|
#define batadv_dat_addr_t uint16_t
|
|
|
|
#endif /* CONFIG_BATMAN_ADV_DAT */
|
|
|
|
/**
|
|
* 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;
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @net_dev: pointer to the net_device
|
|
* @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
|
|
* @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: BATMAN IV specific per hard interface data
|
|
* @cleanup_work: work queue callback item for hard interface deinit
|
|
*/
|
|
struct batadv_hard_iface {
|
|
struct list_head list;
|
|
int16_t if_num;
|
|
char if_status;
|
|
struct net_device *net_dev;
|
|
uint8_t num_bcasts;
|
|
struct kobject *hardif_obj;
|
|
atomic_t refcount;
|
|
struct packet_type batman_adv_ptype;
|
|
struct net_device *soft_iface;
|
|
struct rcu_head rcu;
|
|
struct batadv_hard_iface_bat_iv bat_iv;
|
|
struct work_struct cleanup_work;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_frag_table_entry - head in the fragment buffer table
|
|
* @head: 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
|
|
*/
|
|
struct batadv_frag_table_entry {
|
|
struct hlist_head head;
|
|
spinlock_t lock; /* protects head */
|
|
unsigned long timestamp;
|
|
uint16_t seqno;
|
|
uint16_t 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;
|
|
uint8_t 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 {
|
|
uint32_t crc;
|
|
atomic_t num_entries;
|
|
};
|
|
|
|
/**
|
|
* 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 list_head list;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
|
|
* @bcast_own: bitfield containing the number of our OGMs this orig_node
|
|
* rebroadcasted "back" to us (relative to last_real_seqno)
|
|
* @bcast_own_sum: counted result 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;
|
|
uint8_t *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
|
|
* @primary_addr: hosts primary interface address
|
|
* @router: router that should be used to reach this originator
|
|
* @batadv_dat_addr_t: 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
|
|
* @batman_seqno_reset: time when the batman seqno window was reset
|
|
* @capabilities: announced capabilities of this originator
|
|
* @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_initialised: bool keeping track of whether or not this node have received
|
|
* any translation table information from the orig node yet
|
|
* @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.
|
|
* @last_real_seqno: last and best known sequence number
|
|
* @last_ttl: ttl of last received packet
|
|
* @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, router and bonding_list
|
|
* @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
|
|
* @bond_candidates: how many candidates are available
|
|
* @bond_list: list of bonding candidates
|
|
* @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 {
|
|
uint8_t orig[ETH_ALEN];
|
|
uint8_t primary_addr[ETH_ALEN];
|
|
struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
batadv_dat_addr_t dat_addr;
|
|
#endif
|
|
unsigned long last_seen;
|
|
unsigned long bcast_seqno_reset;
|
|
unsigned long batman_seqno_reset;
|
|
uint8_t capabilities;
|
|
atomic_t last_ttvn;
|
|
unsigned char *tt_buff;
|
|
int16_t tt_buff_len;
|
|
spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
|
|
bool tt_initialised;
|
|
/* prevents from changing the table while reading it */
|
|
spinlock_t tt_lock;
|
|
uint32_t last_real_seqno;
|
|
uint8_t last_ttl;
|
|
DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
|
|
uint32_t last_bcast_seqno;
|
|
struct hlist_head neigh_list;
|
|
/* neigh_list_lock protects: neigh_list, router & bonding_list */
|
|
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;
|
|
atomic_t bond_candidates;
|
|
struct list_head bond_list;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
#ifdef CONFIG_BATMAN_ADV_NC
|
|
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 list_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
|
|
*/
|
|
enum batadv_orig_capabilities {
|
|
BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
|
|
BATADV_ORIG_CAPA_HAS_NC = BIT(1),
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @deleted: this struct is scheduled for deletion
|
|
* @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;
|
|
uint32_t bandwidth_down;
|
|
uint32_t bandwidth_up;
|
|
unsigned long deleted;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_neigh_bat_iv - B.A.T.M.A.N. IV specific structure for single
|
|
* hop neighbors
|
|
* @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
|
|
* @lq_update_lock: lock protecting tq_recv & tq_index
|
|
*/
|
|
struct batadv_neigh_bat_iv {
|
|
uint8_t tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
|
|
uint8_t tq_index;
|
|
uint8_t tq_avg;
|
|
DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
|
|
uint8_t real_packet_count;
|
|
spinlock_t lq_update_lock; /* protects tq_recv & tq_index */
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @if_incoming: pointer to incoming hard interface
|
|
* @last_seen: when last packet via this neighbor was received
|
|
* @last_ttl: last received ttl from this neigh node
|
|
* @bonding_list: list node for batadv_orig_node::bond_list
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
* @bat_iv: B.A.T.M.A.N. IV private structure
|
|
*/
|
|
struct batadv_neigh_node {
|
|
struct hlist_node list;
|
|
struct batadv_orig_node *orig_node;
|
|
uint8_t addr[ETH_ALEN];
|
|
struct batadv_hard_iface *if_incoming;
|
|
unsigned long last_seen;
|
|
uint8_t last_ttl;
|
|
struct list_head bonding_list;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
struct batadv_neigh_bat_iv bat_iv;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
|
|
* @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
|
|
* @crc: crc32 checksum of broadcast payload
|
|
* @entrytime: time when the broadcast packet was received
|
|
*/
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
struct batadv_bcast_duplist_entry {
|
|
uint8_t 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 CONFIG_BATMAN_ADV_DAT
|
|
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 CONFIG_BATMAN_ADV_NC
|
|
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 list_head req_list;
|
|
struct list_head roam_list;
|
|
spinlock_t changes_list_lock; /* protects changes */
|
|
spinlock_t req_list_lock; /* protects req_list */
|
|
spinlock_t roam_list_lock; /* protects roam_list */
|
|
unsigned char *last_changeset;
|
|
int16_t 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;
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @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
|
|
*/
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
struct batadv_priv_bla {
|
|
atomic_t num_requests;
|
|
struct batadv_hashtable *claim_hash;
|
|
struct batadv_hashtable *backbone_hash;
|
|
struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
|
|
int bcast_duplist_curr;
|
|
/* protects bcast_duplist & bcast_duplist_curr */
|
|
spinlock_t bcast_duplist_lock;
|
|
struct batadv_bla_claim_dst claim_dest;
|
|
struct delayed_work work;
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* struct batadv_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
|
|
*/
|
|
#ifdef CONFIG_BATMAN_ADV_DEBUG
|
|
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
|
|
* @list: list of available gateway nodes
|
|
* @list_lock: lock protecting gw_list & curr_gw
|
|
* @curr_gw: pointer to currently selected gateway node
|
|
* @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 list;
|
|
spinlock_t list_lock; /* protects gw_list & curr_gw */
|
|
struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
|
|
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 */
|
|
};
|
|
|
|
/**
|
|
* struct batadv_priv_dat - per mesh interface DAT private data
|
|
* @addr: node DAT address
|
|
* @hash: hashtable representing the local ARP cache
|
|
* @work: work queue callback item for cache purging
|
|
*/
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
struct batadv_priv_dat {
|
|
batadv_dat_addr_t addr;
|
|
struct batadv_hashtable *hash;
|
|
struct delayed_work work;
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* struct batadv_priv_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_softif_vlan - per VLAN attributes set
|
|
* @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 {
|
|
unsigned short vid;
|
|
struct kobject *kobj;
|
|
atomic_t ap_isolation; /* boolean */
|
|
struct batadv_vlan_tt tt;
|
|
struct hlist_node list;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
|
|
* @gw_sel_class: gateway selection class (applies if gw_mode client)
|
|
* @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)
|
|
* @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
|
|
* @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
|
|
* @orig_work: work queue callback item for orig node purging
|
|
* @cleanup_work: work queue callback item for soft interface deinit
|
|
* @primary_if: one of the hard interfaces assigned to this mesh interface
|
|
* becomes the primary interface
|
|
* @bat_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
|
|
* @network_coding: bool indicating whether network coding is enabled
|
|
* @batadv_priv_nc: network coding data
|
|
*/
|
|
struct batadv_priv {
|
|
atomic_t mesh_state;
|
|
struct net_device *soft_iface;
|
|
struct net_device_stats stats;
|
|
uint64_t __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 CONFIG_BATMAN_ADV_BLA
|
|
atomic_t bridge_loop_avoidance;
|
|
#endif
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
atomic_t distributed_arp_table;
|
|
#endif
|
|
atomic_t gw_mode;
|
|
atomic_t gw_sel_class;
|
|
atomic_t orig_interval;
|
|
atomic_t hop_penalty;
|
|
#ifdef CONFIG_BATMAN_ADV_DEBUG
|
|
atomic_t log_level;
|
|
#endif
|
|
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 batadv_hashtable *orig_hash;
|
|
spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
|
|
spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
|
|
struct delayed_work orig_work;
|
|
struct work_struct cleanup_work;
|
|
struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
|
|
struct batadv_algo_ops *bat_algo_ops;
|
|
struct hlist_head softif_vlan_list;
|
|
spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
struct batadv_priv_bla bla;
|
|
#endif
|
|
#ifdef CONFIG_BATMAN_ADV_DEBUG
|
|
struct batadv_priv_debug_log *debug_log;
|
|
#endif
|
|
struct batadv_priv_gw gw;
|
|
struct batadv_priv_tt tt;
|
|
struct batadv_priv_tvlv tvlv;
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
struct batadv_priv_dat dat;
|
|
#endif
|
|
#ifdef CONFIG_BATMAN_ADV_NC
|
|
atomic_t network_coding;
|
|
struct batadv_priv_nc nc;
|
|
#endif /* CONFIG_BATMAN_ADV_NC */
|
|
};
|
|
|
|
/**
|
|
* 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;
|
|
uint8_t icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @refcount: number of contexts the object is used
|
|
* @rcu: struct used for freeing in an RCU-safe manner
|
|
*/
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
struct batadv_bla_backbone_gw {
|
|
uint8_t 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;
|
|
uint16_t crc;
|
|
atomic_t 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
|
|
* @batadv_bla_backbone_gw: pointer to backbone gw claiming this client
|
|
* @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 {
|
|
uint8_t addr[ETH_ALEN];
|
|
unsigned short vid;
|
|
struct batadv_bla_backbone_gw *backbone_gw;
|
|
unsigned long lasttime;
|
|
struct hlist_node hash_entry;
|
|
struct rcu_head rcu;
|
|
atomic_t 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 {
|
|
uint8_t addr[ETH_ALEN];
|
|
unsigned short vid;
|
|
struct hlist_node hash_entry;
|
|
uint16_t flags;
|
|
unsigned long added_at;
|
|
atomic_t 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
|
|
*/
|
|
struct batadv_tt_local_entry {
|
|
struct batadv_tt_common_entry common;
|
|
unsigned long last_seen;
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @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;
|
|
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;
|
|
uint8_t ttvn;
|
|
struct hlist_node list;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_tt_change_node - structure for tt changes occured
|
|
* @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
|
|
* @list: list node for batadv_priv_tt::req_list
|
|
*/
|
|
struct batadv_tt_req_node {
|
|
uint8_t addr[ETH_ALEN];
|
|
unsigned long issued_at;
|
|
struct list_head 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 {
|
|
uint8_t 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;
|
|
uint8_t addr[ETH_ALEN];
|
|
atomic_t 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;
|
|
atomic_t refcount;
|
|
struct list_head packet_list;
|
|
spinlock_t packet_list_lock; /* Protects packet_list */
|
|
uint8_t next_hop[ETH_ALEN];
|
|
uint8_t 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;
|
|
};
|
|
|
|
/**
|
|
* 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_socket_client::queue_list
|
|
* @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 incoming hard-iface or primary iface if locally
|
|
* generated packet
|
|
*/
|
|
struct batadv_forw_packet {
|
|
struct hlist_node list;
|
|
unsigned long send_time;
|
|
uint8_t own;
|
|
struct sk_buff *skb;
|
|
uint16_t packet_len;
|
|
uint32_t direct_link_flags;
|
|
uint8_t num_packets;
|
|
struct delayed_work delayed_work;
|
|
struct batadv_hard_iface *if_incoming;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_algo_ops - mesh algorithm callbacks
|
|
* @list: list node for the batadv_algo_list
|
|
* @name: name of the algorithm
|
|
* @bat_iface_enable: init routing info when hard-interface is enabled
|
|
* @bat_iface_disable: de-init routing info when hard-interface is disabled
|
|
* @bat_iface_update_mac: (re-)init mac addresses of the protocol information
|
|
* belonging to this hard-interface
|
|
* @bat_primary_iface_set: called when primary interface is selected / changed
|
|
* @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
|
|
* @bat_ogm_emit: send scheduled OGM
|
|
* @bat_neigh_cmp: compare the metrics of two neighbors
|
|
* @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or
|
|
* better than neigh2 from the metric prospective
|
|
* @bat_orig_print: print the originator table (optional)
|
|
* @bat_orig_free: free the resources allocated by the routing algorithm for an
|
|
* orig_node object
|
|
* @bat_orig_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
|
|
* @bat_orig_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
|
|
*/
|
|
struct batadv_algo_ops {
|
|
struct hlist_node list;
|
|
char *name;
|
|
int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
|
|
void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
|
|
int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1,
|
|
struct batadv_neigh_node *neigh2);
|
|
bool (*bat_neigh_is_equiv_or_better)(struct batadv_neigh_node *neigh1,
|
|
struct batadv_neigh_node *neigh2);
|
|
/* orig_node handling API */
|
|
void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq);
|
|
void (*bat_orig_free)(struct batadv_orig_node *orig_node);
|
|
int (*bat_orig_add_if)(struct batadv_orig_node *orig_node,
|
|
int max_if_num);
|
|
int (*bat_orig_del_if)(struct batadv_orig_node *orig_node,
|
|
int max_if_num, int del_if_num);
|
|
};
|
|
|
|
/**
|
|
* 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;
|
|
uint8_t mac_addr[ETH_ALEN];
|
|
unsigned short vid;
|
|
unsigned long last_update;
|
|
struct hlist_node hash_entry;
|
|
atomic_t refcount;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct batadv_dat_candidate - candidate destination for DAT operations
|
|
* @type: the type of the selected candidate. It can one of the following:
|
|
* - BATADV_DAT_CANDIDATE_NOT_FOUND
|
|
* - BATADV_DAT_CANDIDATE_ORIG
|
|
* @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
|
|
* corresponding originator node structure
|
|
*/
|
|
struct batadv_dat_candidate {
|
|
int type;
|
|
struct batadv_orig_node *orig_node;
|
|
};
|
|
|
|
/**
|
|
* 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
|
|
* @value_len: length of the buffer following this struct which contains
|
|
* the actual tvlv payload
|
|
* @refcount: number of contexts the object is used
|
|
*/
|
|
struct batadv_tvlv_container {
|
|
struct hlist_node list;
|
|
struct batadv_tvlv_hdr tvlv_hdr;
|
|
atomic_t 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,
|
|
uint8_t flags,
|
|
void *tvlv_value, uint16_t tvlv_value_len);
|
|
int (*unicast_handler)(struct batadv_priv *bat_priv,
|
|
uint8_t *src, uint8_t *dst,
|
|
void *tvlv_value, uint16_t tvlv_value_len);
|
|
uint8_t type;
|
|
uint8_t version;
|
|
uint8_t flags;
|
|
atomic_t 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),
|
|
};
|
|
|
|
#endif /* _NET_BATMAN_ADV_TYPES_H_ */
|