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35df3b298f
When a VLAN interface (on top of batX) is removed and re-added within a short timeframe TT does not have enough time to properly cleanup. This creates an internal TT state mismatch as the newly created softif_vlan will be initialized from scratch with a TT client count of zero (even if TT entries for this VLAN still exist). The resulting TT messages are bogus due to the counter / tt client listing mismatch, thus creating inconsistencies on every node in the network To fix this issue destroy_vlan() has to not free the VLAN object immediately but it has to be kept alive until all the TT entries for this VLAN have been removed. destroy_vlan() still removes the sysfs folder so that the user has the feeling that everything went fine. If the same VLAN is re-added before the old object is free'd, then the latter is resurrected and re-used. Implement such behaviour by increasing the reference counter of a softif_vlan object every time a new local TT entry for such VLAN is created and remove the object from the list only when all the TT entries have been destroyed. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
1260 lines
46 KiB
C
1260 lines
46 KiB
C
/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _NET_BATMAN_ADV_TYPES_H_
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#define _NET_BATMAN_ADV_TYPES_H_
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#include "packet.h"
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#include "bitarray.h"
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#include <linux/kernel.h>
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#ifdef CONFIG_BATMAN_ADV_DAT
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/**
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* batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
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* changed, BATADV_DAT_ADDR_MAX is changed as well.
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*
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* *Please be careful: batadv_dat_addr_t must be UNSIGNED*
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*/
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#define batadv_dat_addr_t uint16_t
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#endif /* CONFIG_BATMAN_ADV_DAT */
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/**
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* enum batadv_dhcp_recipient - dhcp destination
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* @BATADV_DHCP_NO: packet is not a dhcp message
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* @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server
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* @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client
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*/
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enum batadv_dhcp_recipient {
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BATADV_DHCP_NO = 0,
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BATADV_DHCP_TO_SERVER,
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BATADV_DHCP_TO_CLIENT,
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};
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/**
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* BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
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* wire only
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*/
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#define BATADV_TT_REMOTE_MASK 0x00FF
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/**
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* BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
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* among the nodes. These flags are used to compute the global/local CRC
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*/
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#define BATADV_TT_SYNC_MASK 0x00F0
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/**
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* struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
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* @ogm_buff: buffer holding the OGM packet
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* @ogm_buff_len: length of the OGM packet buffer
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* @ogm_seqno: OGM sequence number - used to identify each OGM
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*/
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struct batadv_hard_iface_bat_iv {
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unsigned char *ogm_buff;
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int ogm_buff_len;
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atomic_t ogm_seqno;
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};
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/**
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* struct batadv_hard_iface - network device known to batman-adv
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* @list: list node for batadv_hardif_list
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* @if_num: identificator of the interface
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* @if_status: status of the interface for batman-adv
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* @net_dev: pointer to the net_device
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* @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
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* @hardif_obj: kobject of the per interface sysfs "mesh" directory
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* @refcount: number of contexts the object is used
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* @batman_adv_ptype: packet type describing packets that should be processed by
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* batman-adv for this interface
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* @soft_iface: the batman-adv interface which uses this network interface
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* @rcu: struct used for freeing in an RCU-safe manner
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* @bat_iv: BATMAN IV specific per hard interface data
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* @cleanup_work: work queue callback item for hard interface deinit
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* @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
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*/
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struct batadv_hard_iface {
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struct list_head list;
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int16_t if_num;
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char if_status;
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struct net_device *net_dev;
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uint8_t num_bcasts;
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struct kobject *hardif_obj;
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atomic_t refcount;
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struct packet_type batman_adv_ptype;
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struct net_device *soft_iface;
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struct rcu_head rcu;
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struct batadv_hard_iface_bat_iv bat_iv;
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struct work_struct cleanup_work;
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struct dentry *debug_dir;
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};
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/**
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* struct batadv_orig_ifinfo - originator info per outgoing interface
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* @list: list node for orig_node::ifinfo_list
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* @if_outgoing: pointer to outgoing hard interface
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* @router: router that should be used to reach this originator
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* @last_real_seqno: last and best known sequence number
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* @last_ttl: ttl of last received packet
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* @batman_seqno_reset: time when the batman seqno window was reset
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in an RCU-safe manner
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*/
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struct batadv_orig_ifinfo {
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struct hlist_node list;
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struct batadv_hard_iface *if_outgoing;
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struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
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uint32_t last_real_seqno;
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uint8_t last_ttl;
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unsigned long batman_seqno_reset;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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/**
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* struct batadv_frag_table_entry - head in the fragment buffer table
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* @head: head of list with fragments
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* @lock: lock to protect the list of fragments
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* @timestamp: time (jiffie) of last received fragment
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* @seqno: sequence number of the fragments in the list
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* @size: accumulated size of packets in list
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*/
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struct batadv_frag_table_entry {
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struct hlist_head head;
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spinlock_t lock; /* protects head */
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unsigned long timestamp;
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uint16_t seqno;
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uint16_t size;
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};
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/**
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* struct batadv_frag_list_entry - entry in a list of fragments
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* @list: list node information
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* @skb: fragment
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* @no: fragment number in the set
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*/
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struct batadv_frag_list_entry {
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struct hlist_node list;
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struct sk_buff *skb;
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uint8_t no;
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};
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/**
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* struct batadv_vlan_tt - VLAN specific TT attributes
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* @crc: CRC32 checksum of the entries belonging to this vlan
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* @num_entries: number of TT entries for this VLAN
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*/
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struct batadv_vlan_tt {
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uint32_t crc;
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atomic_t num_entries;
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};
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/**
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* struct batadv_orig_node_vlan - VLAN specific data per orig_node
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* @vid: the VLAN identifier
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* @tt: VLAN specific TT attributes
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* @list: list node for orig_node::vlan_list
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* @refcount: number of context where this object is currently in use
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* @rcu: struct used for freeing in a RCU-safe manner
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*/
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struct batadv_orig_node_vlan {
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unsigned short vid;
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struct batadv_vlan_tt tt;
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struct list_head list;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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/**
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* struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
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* @bcast_own: bitfield containing the number of our OGMs this orig_node
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* rebroadcasted "back" to us (relative to last_real_seqno)
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* @bcast_own_sum: counted result of bcast_own
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* @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
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* neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
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*/
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struct batadv_orig_bat_iv {
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unsigned long *bcast_own;
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uint8_t *bcast_own_sum;
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/* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
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* neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
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*/
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spinlock_t ogm_cnt_lock;
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};
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/**
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* struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
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* @orig: originator ethernet address
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* @primary_addr: hosts primary interface address
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* @ifinfo_list: list for routers per outgoing interface
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* @last_bonding_candidate: pointer to last ifinfo of last used router
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* @batadv_dat_addr_t: address of the orig node in the distributed hash
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* @last_seen: time when last packet from this node was received
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* @bcast_seqno_reset: time when the broadcast seqno window was reset
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* @mcast_flags: multicast flags announced by the orig node
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* @mcast_want_all_unsnoop_node: a list node for the
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* mcast.want_all_unsnoopables list
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* @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
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* @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
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* @capabilities: announced capabilities of this originator
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* @capa_initialized: bitfield to remember whether a capability was initialized
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* @last_ttvn: last seen translation table version number
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* @tt_buff: last tt changeset this node received from the orig node
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* @tt_buff_len: length of the last tt changeset this node received from the
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* orig node
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* @tt_buff_lock: lock that protects tt_buff and tt_buff_len
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* @tt_lock: prevents from updating the table while reading it. Table update is
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* made up by two operations (data structure update and metdata -CRC/TTVN-
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* recalculation) and they have to be executed atomically in order to avoid
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* another thread to read the table/metadata between those.
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* @bcast_bits: bitfield containing the info which payload broadcast originated
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* from this orig node this host already has seen (relative to
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* last_bcast_seqno)
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* @last_bcast_seqno: last broadcast sequence number received by this host
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* @neigh_list: list of potential next hop neighbor towards this orig node
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* @neigh_list_lock: lock protecting neigh_list and router
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* @hash_entry: hlist node for batadv_priv::orig_hash
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* @bat_priv: pointer to soft_iface this orig node belongs to
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* @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in an RCU-safe manner
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* @in_coding_list: list of nodes this orig can hear
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* @out_coding_list: list of nodes that can hear this orig
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* @in_coding_list_lock: protects in_coding_list
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* @out_coding_list_lock: protects out_coding_list
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* @fragments: array with heads for fragment chains
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* @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the
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* originator represented by this object
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* @vlan_list_lock: lock protecting vlan_list
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* @bat_iv: B.A.T.M.A.N. IV private structure
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*/
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struct batadv_orig_node {
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uint8_t orig[ETH_ALEN];
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uint8_t primary_addr[ETH_ALEN];
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struct hlist_head ifinfo_list;
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struct batadv_orig_ifinfo *last_bonding_candidate;
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#ifdef CONFIG_BATMAN_ADV_DAT
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batadv_dat_addr_t dat_addr;
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#endif
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unsigned long last_seen;
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unsigned long bcast_seqno_reset;
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#ifdef CONFIG_BATMAN_ADV_MCAST
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uint8_t mcast_flags;
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struct hlist_node mcast_want_all_unsnoopables_node;
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struct hlist_node mcast_want_all_ipv4_node;
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struct hlist_node mcast_want_all_ipv6_node;
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#endif
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uint8_t capabilities;
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uint8_t capa_initialized;
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atomic_t last_ttvn;
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unsigned char *tt_buff;
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int16_t tt_buff_len;
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spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
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/* prevents from changing the table while reading it */
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spinlock_t tt_lock;
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DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
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uint32_t last_bcast_seqno;
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struct hlist_head neigh_list;
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/* neigh_list_lock protects: neigh_list and router */
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spinlock_t neigh_list_lock;
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struct hlist_node hash_entry;
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struct batadv_priv *bat_priv;
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/* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
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spinlock_t bcast_seqno_lock;
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atomic_t refcount;
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struct rcu_head rcu;
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#ifdef CONFIG_BATMAN_ADV_NC
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struct list_head in_coding_list;
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struct list_head out_coding_list;
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spinlock_t in_coding_list_lock; /* Protects in_coding_list */
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spinlock_t out_coding_list_lock; /* Protects out_coding_list */
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#endif
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struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
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struct list_head vlan_list;
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spinlock_t vlan_list_lock; /* protects vlan_list */
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struct batadv_orig_bat_iv bat_iv;
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};
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/**
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* enum batadv_orig_capabilities - orig node capabilities
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* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
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* @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
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* @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
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* @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
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* (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
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*/
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enum batadv_orig_capabilities {
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BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
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BATADV_ORIG_CAPA_HAS_NC = BIT(1),
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BATADV_ORIG_CAPA_HAS_TT = BIT(2),
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BATADV_ORIG_CAPA_HAS_MCAST = BIT(3),
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};
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/**
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* struct batadv_gw_node - structure for orig nodes announcing gw capabilities
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* @list: list node for batadv_priv_gw::list
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* @orig_node: pointer to corresponding orig node
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* @bandwidth_down: advertised uplink download bandwidth
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* @bandwidth_up: advertised uplink upload bandwidth
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* @deleted: this struct is scheduled for deletion
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in an RCU-safe manner
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*/
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struct batadv_gw_node {
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struct hlist_node list;
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struct batadv_orig_node *orig_node;
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uint32_t bandwidth_down;
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uint32_t bandwidth_up;
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unsigned long deleted;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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/**
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* struct batadv_neigh_node - structure for single hops neighbors
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* @list: list node for batadv_orig_node::neigh_list
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* @orig_node: pointer to corresponding orig_node
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* @addr: the MAC address of the neighboring interface
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* @ifinfo_list: list for routing metrics per outgoing interface
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* @ifinfo_lock: lock protecting private ifinfo members and list
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* @if_incoming: pointer to incoming hard interface
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* @last_seen: when last packet via this neighbor was received
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* @last_ttl: last received ttl from this neigh node
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* @rcu: struct used for freeing in an RCU-safe manner
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* @bat_iv: B.A.T.M.A.N. IV private structure
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*/
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struct batadv_neigh_node {
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struct hlist_node list;
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struct batadv_orig_node *orig_node;
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uint8_t addr[ETH_ALEN];
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struct hlist_head ifinfo_list;
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spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */
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struct batadv_hard_iface *if_incoming;
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unsigned long last_seen;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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/**
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* struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
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* interface for BATMAN IV
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* @tq_recv: ring buffer of received TQ values from this neigh node
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* @tq_index: ring buffer index
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* @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
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* @real_bits: bitfield containing the number of OGMs received from this neigh
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* node (relative to orig_node->last_real_seqno)
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* @real_packet_count: counted result of real_bits
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*/
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struct batadv_neigh_ifinfo_bat_iv {
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uint8_t tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
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uint8_t tq_index;
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uint8_t tq_avg;
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DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
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uint8_t real_packet_count;
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};
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/**
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* struct batadv_neigh_ifinfo - neighbor information per outgoing interface
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* @list: list node for batadv_neigh_node::ifinfo_list
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* @if_outgoing: pointer to outgoing hard interface
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* @bat_iv: B.A.T.M.A.N. IV private structure
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* @last_ttl: last received ttl from this neigh node
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* @refcount: number of contexts the object is used
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* @rcu: struct used for freeing in a RCU-safe manner
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*/
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struct batadv_neigh_ifinfo {
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struct hlist_node list;
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struct batadv_hard_iface *if_outgoing;
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struct batadv_neigh_ifinfo_bat_iv bat_iv;
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uint8_t last_ttl;
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atomic_t refcount;
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struct rcu_head rcu;
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};
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/**
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* struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
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* @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
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* @crc: crc32 checksum of broadcast payload
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* @entrytime: time when the broadcast packet was received
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*/
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#ifdef CONFIG_BATMAN_ADV_BLA
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struct batadv_bcast_duplist_entry {
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uint8_t orig[ETH_ALEN];
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__be32 crc;
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unsigned long entrytime;
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};
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#endif
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/**
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* enum batadv_counters - indices for traffic counters
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* @BATADV_CNT_TX: transmitted payload traffic packet counter
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* @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
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* @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
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* @BATADV_CNT_RX: received payload traffic packet counter
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* @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
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* @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
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* @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
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* @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
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* @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
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* @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
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* @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
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* @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_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
|
|
*/
|
|
#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
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_MCAST
|
|
/**
|
|
* 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
|
|
* @flags: the flags we have last sent in our mcast tvlv
|
|
* @enabled: whether the multicast tvlv is currently enabled
|
|
* @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)
|
|
*/
|
|
struct batadv_priv_mcast {
|
|
struct hlist_head mla_list;
|
|
struct hlist_head want_all_unsnoopables_list;
|
|
struct hlist_head want_all_ipv4_list;
|
|
struct hlist_head want_all_ipv6_list;
|
|
uint8_t flags;
|
|
bool enabled;
|
|
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;
|
|
};
|
|
#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
|
|
* @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;
|
|
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
|
|
* @multicast_mode: Enable or disable multicast optimizations on this node's
|
|
* sender/originating side
|
|
* @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
|
|
* @mcast: multicast 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
|
|
#ifdef CONFIG_BATMAN_ADV_MCAST
|
|
atomic_t multicast_mode;
|
|
#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
|
|
uint32_t isolation_mark;
|
|
uint32_t 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 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_MCAST
|
|
struct batadv_priv_mcast mcast;
|
|
#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
|
|
* @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;
|
|
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;
|
|
};
|
|
|
|
/**
|
|
* 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_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 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
|
|
*/
|
|
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_hard_iface *if_outgoing;
|
|
};
|
|
|
|
/**
|
|
* 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 for their respective
|
|
* outgoing interfaces
|
|
* @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or better
|
|
* than neigh2 for their respective outgoing interface 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_hard_iface *if_outgoing1,
|
|
struct batadv_neigh_node *neigh2,
|
|
struct batadv_hard_iface *if_outgoing2);
|
|
bool (*bat_neigh_is_equiv_or_better)
|
|
(struct batadv_neigh_node *neigh1,
|
|
struct batadv_hard_iface *if_outgoing1,
|
|
struct batadv_neigh_node *neigh2,
|
|
struct batadv_hard_iface *if_outgoing2);
|
|
/* orig_node handling API */
|
|
void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq,
|
|
struct batadv_hard_iface *hard_iface);
|
|
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_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
|
|
* @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_ */
|