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linux-next/net/batman-adv/translation-table.h

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batman-adv: update copyright years for 2014 Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2014-01-05 01:04:25 +08:00
/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
net: Add batman-adv meshing protocol B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-13 19:19:28 +08:00
*
batman-adv: add contributor name translation_table.{c,h} have been heavily modified by another contributor and for legal purposes it is better to include his name into the contributor list Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-03-14 20:03:01 +08:00
* Marek Lindner, Simon Wunderlich, Antonio Quartulli
net: Add batman-adv meshing protocol B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-13 19:19:28 +08:00
*
* 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
batman-adv: remove FSF address from GPL disclaimer As suggested by checkpatch, remove all the references to the FSF address since the kernel already has one reference in its documentation. In this way it is easier to update it in case of future changes. Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2013-11-04 03:40:48 +08:00
* along with this program; if not, see <http://www.gnu.org/licenses/>.
net: Add batman-adv meshing protocol B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-13 19:19:28 +08:00
*/
#ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-06 04:31:31 +08:00
int batadv_tt_init(struct batadv_priv *bat_priv);
batman-adv: limit local translation table max size The local translation table size is limited by what can be transferred from one node to another via a full table request. The number of entries fitting into a full table request depend on whether the fragmentation is enabled or not. Therefore this patch introduces a max table size check and refuses to add more local clients when that size is reached. Moreover, if the max full table packet size changes (MTU change or fragmentation is disabled) the local table is downsized instantaneously. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Antonio Quartulli <ordex@autistici.org>
2013-05-27 15:33:25 +08:00
bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
batman-adv: mark a local client as isolated when needed A client sending packets which mark matches the value configured via sysfs has to be identified as isolated using the TT_CLIENT_ISOLA flag. The match is mask based, meaning that only bits set in the mask are compared with those in the mark value. If the configured mask is equal to 0 no operation is performed. Such flag is then advertised within the classic client announcement mechanism. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2013-11-16 19:03:48 +08:00
unsigned short vid, int ifindex, uint32_t mark);
batman-adv: pass the WIFI flag from the local to global entry in case of client roaming a new global entry is added while a corresponding local one is still present. In this case the node can safely pass the WIFI flag from the local to the global entry. This change is required to let the AP-isolation correctly working in case of roaming: if a generic WIFI client C roams from node A to B, A adds a global entry for C without adding any WIFI flag. The latter will be set only later, once A has received C's advertisement from B. In this time period the AP-Isolation (if enabled) would not correctly work since C is not marked as WIFI, so allowing it to communicate with other WIFI clients. Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-08-27 17:44:43 +08:00
uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-06-04 18:11:39 +08:00
const uint8_t *addr, unsigned short vid,
const char *message, bool roaming);
batman-adv: Prefix translation-table non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-05-12 08:09:39 +08:00
int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset);
int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-06 04:31:31 +08:00
void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
batman-adv: make the TT global purge routine VLAN specific Instead of unconditionally removing all the TT entries served by a given originator, make tt_global_orig_del() remove only entries matching a given VLAN identifier provided as argument. If such argument is negative all the global entries served by the originator are removed. This change is used into the BLA code to purge entries served by a newly discovered Backbone node, but limiting the operation only to those connected to the VLAN where the backbone has been discovered. Cc: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-08-08 00:28:55 +08:00
int32_t match_vid, const char *message);
batman-adv: Modified forwarding behaviour for multicast packets With this patch a multicast packet is not always simply flooded anymore, the behaviour for the following cases is changed to reduce unnecessary overhead: If all nodes within the horizon of a certain node have signalized multicast listener announcement capability then an IPv6 multicast packet with a destination of IPv6 link-local scope (excluding ff02::1) coming from the upstream of this node... * ...is dropped if there is no according multicast listener in the translation table, * ...is forwarded via unicast if there is a single node with interested multicast listeners * ...and otherwise still gets flooded. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2014-02-16 00:47:52 +08:00
int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
const uint8_t *addr, unsigned short vid);
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-06 04:31:31 +08:00
struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
const uint8_t *src,
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-06-04 18:11:39 +08:00
const uint8_t *addr,
unsigned short vid);
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-06 04:31:31 +08:00
void batadv_tt_free(struct batadv_priv *bat_priv);
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-06-04 18:11:39 +08:00
bool batadv_is_my_client(struct batadv_priv *bat_priv, const uint8_t *addr,
unsigned short vid);
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-06 04:31:31 +08:00
bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, uint8_t *src,
batman-adv: make the AP isolation attribute VLAN specific AP isolation has to be enabled on one VLAN interface only. This patch moves the AP isolation attribute to the per-vlan interface attribute set, enabling it to have a different value depending on the selected vlan. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-07-02 17:04:36 +08:00
uint8_t *dst, unsigned short vid);
batman-adv: tvlv - convert tt data sent within OGMs The translation table meta data (version number, crc checksum, etc) as well as the translation table diff propgated within OGMs now uses the newly introduced tvlv infrastructure. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2013-04-23 21:40:01 +08:00
void batadv_tt_local_commit_changes(struct batadv_priv *bat_priv);
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-06 04:31:31 +08:00
bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv,
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-06-04 18:11:39 +08:00
uint8_t *addr, unsigned short vid);
batman-adv: substitute tt_poss_change with a per-tt_entry flag tt_poss_change is a node-wide flag which tells whether the node is in a roaming state (a client recently moved to/away from it) in order to let it apply special re-routing rules. However this flag does not give a clear idea of the current state because it is not possible to understand *which client* is actually involved in the roaming. For this reason a better approach has been chosen: instead of using a node-wide variable, the roaming state is now given by a per-tt_entry ROAM flag which, in case of packet coming through the node, tells the node whether the real destination is in roaming state or not. With this flag change, batadv_check_unicast_ttvn() has also been rearranged in order to better fit the new re-routing logic and to be much more readable. Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-09-24 04:38:34 +08:00
bool batadv_tt_local_client_is_roaming(struct batadv_priv *bat_priv,
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-06-04 18:11:39 +08:00
uint8_t *addr, unsigned short vid);
batman-adv: limit local translation table max size The local translation table size is limited by what can be transferred from one node to another via a full table request. The number of entries fitting into a full table request depend on whether the fragmentation is enabled or not. Therefore this patch introduces a max table size check and refuses to add more local clients when that size is reached. Moreover, if the max full table packet size changes (MTU change or fragmentation is disabled) the local table is downsized instantaneously. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Antonio Quartulli <ordex@autistici.org>
2013-05-27 15:33:25 +08:00
void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface);
batman-adv: detect not yet announced clients With the current TT mechanism a new client joining the network is not immediately able to communicate with other hosts because its MAC address has not been announced yet. This situation holds until the first OGM containing its joining event will be spread over the mesh network. This behaviour can be acceptable in networks where the originator interval is a small value (e.g. 1sec) but if that value is set to an higher time (e.g. 5secs) the client could suffer from several malfunctions like DHCP client timeouts, etc. This patch adds an early detection mechanism that makes nodes in the network able to recognise "not yet announced clients" by means of the broadcast packets they emitted on connection (e.g. ARP or DHCP request). The added client will then be confirmed upon receiving the OGM claiming it or purged if such OGM is not received within a fixed amount of time. Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-07-06 05:38:29 +08:00
bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-06-04 18:11:39 +08:00
const unsigned char *addr,
unsigned short vid);
batman-adv: set the isolation mark in the skb if needed If a broadcast packet is coming from a client marked as isolated, then mark the skb using the isolation mark so that netfilter (or any other application) can recognise them. The mark is written in the skb based on the mask value: only bits set in the mask are substitued by those in the mark value Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2013-11-16 19:03:52 +08:00
bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv,
const uint8_t *addr, unsigned short vid);
net: Add batman-adv meshing protocol B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-13 19:19:28 +08:00
#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
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