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linux-2.6/net/batman-adv/translation-table.h

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batman-adv: Reformat multiline comments to consistent style batman-adv doesn't follow the style for multiline comments that David S. Miller prefers. All comments should be reformatted to follow this consistent style to make the code slightly more readable. Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-05-12 00:09:43 +00:00
/* Copyright (C) 2007-2012 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 11:19:28 +00:00
*
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 12:03:01 +00:00
* 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 11:19:28 +00:00
*
* 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
* 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_TRANSLATION_TABLE_H_
#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
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 00:09:39 +00:00
int batadv_tt_len(int changes_num);
int batadv_tt_init(struct bat_priv *bat_priv);
void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
int ifindex);
void batadv_tt_local_remove(struct bat_priv *bat_priv,
const uint8_t *addr, const char *message,
bool roaming);
int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset);
void batadv_tt_global_add_orig(struct bat_priv *bat_priv,
struct orig_node *orig_node,
const unsigned char *tt_buff, int tt_buff_len);
int batadv_tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
const unsigned char *addr, uint8_t ttvn, bool roaming,
bool wifi);
int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
void batadv_tt_global_del_orig(struct bat_priv *bat_priv,
struct orig_node *orig_node,
const char *message);
struct orig_node *batadv_transtable_search(struct bat_priv *bat_priv,
const uint8_t *src,
const uint8_t *addr);
void batadv_tt_free(struct bat_priv *bat_priv);
bool batadv_send_tt_response(struct bat_priv *bat_priv,
struct tt_query_packet *tt_request);
bool batadv_is_my_client(struct bat_priv *bat_priv, const uint8_t *addr);
void batadv_handle_tt_response(struct bat_priv *bat_priv,
struct tt_query_packet *tt_response);
bool batadv_is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src,
uint8_t *dst);
void batadv_tt_update_orig(struct bat_priv *bat_priv,
struct orig_node *orig_node,
const unsigned char *tt_buff, uint8_t tt_num_changes,
uint8_t ttvn, uint16_t tt_crc);
batman-adv: turn tt commit code into routing protocol agnostic API Prior to this patch the translation table code made assumptions about how the routing protocol works and where its buffers are stored (to directly modify them). Each protocol now calls the tt code with the relevant pointers, thereby abstracting the code. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-05-06 20:22:05 +00:00
int batadv_tt_append_diff(struct bat_priv *bat_priv,
unsigned char **packet_buff, int *packet_buff_len,
int packet_min_len);
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 00:09:39 +00:00
bool batadv_tt_global_client_is_roaming(struct bat_priv *bat_priv,
uint8_t *addr);
batman-adv: improve unicast packet (re)routing In case of a client X roaming from a generic node A to another node B, it is possible that a third node C gets A's OGM but not B's. At this point in time, if C wants to send data to X it will send a unicast packet destined to A. The packet header will contain A's last ttvn (C got A's OGM and so it knows it). The packet will travel towards A without being intercepted because the ttvn contained in its header is the newest for A. Once A will receive the packet, A's state will not report to be in a "roaming phase" (because, after a roaming, once A sends out its OGM, all the changes are committed and the node is considered not to be in the roaming state anymore) and it will match the ttvn carried by the packet. Therefore there is no reason for A to try to alter the packet's route, thus dropping the packet because the destination client is not there anymore. However, C is well aware that it's routing information towards the client X is outdated as it received an OGM from A saying that the client roamed away. Thanks to this detail, this patch introduces a small change in behaviour: as long as C is in the state of not knowing the new location of client X it will forward the traffic to its last known location using ttvn-1 of the destination. By using an older ttvn node A will be forced to re-route the packet. Intermediate nodes are also allowed to update the packet's destination as long as they have the information about the client's new location. Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-03-16 17:03:28 +00:00
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 11:19:28 +00:00
#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */