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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>
69 lines
3.0 KiB
C
69 lines
3.0 KiB
C
/* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich, Antonio Quartulli
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
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#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
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int batadv_tt_len(int changes_num);
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int batadv_tt_init(struct batadv_priv *bat_priv);
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void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
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int ifindex);
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uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
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const uint8_t *addr, const char *message,
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bool roaming);
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int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset);
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void batadv_tt_global_add_orig(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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const unsigned char *tt_buff, int tt_buff_len);
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int batadv_tt_global_add(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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const unsigned char *addr, uint8_t flags,
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uint8_t ttvn);
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int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
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void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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const char *message);
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struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
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const uint8_t *src,
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const uint8_t *addr);
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void batadv_tt_free(struct batadv_priv *bat_priv);
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bool batadv_send_tt_response(struct batadv_priv *bat_priv,
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struct batadv_tt_query_packet *tt_request);
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bool batadv_is_my_client(struct batadv_priv *bat_priv, const uint8_t *addr);
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void batadv_handle_tt_response(struct batadv_priv *bat_priv,
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struct batadv_tt_query_packet *tt_response);
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bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, uint8_t *src,
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uint8_t *dst);
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void batadv_tt_update_orig(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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const unsigned char *tt_buff, uint8_t tt_num_changes,
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uint8_t ttvn, uint16_t tt_crc);
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int batadv_tt_append_diff(struct batadv_priv *bat_priv,
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unsigned char **packet_buff, int *packet_buff_len,
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int packet_min_len);
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bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv,
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uint8_t *addr);
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bool batadv_tt_local_client_is_roaming(struct batadv_priv *bat_priv,
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uint8_t *addr);
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bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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const unsigned char *addr);
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#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
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