2016-01-01 07:01:03 +08:00
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/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
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2010-12-13 19:19:28 +08:00
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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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2013-11-04 03:40:48 +08:00
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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2010-12-13 19:19:28 +08:00
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*/
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#ifndef _NET_BATMAN_ADV_SEND_H_
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#define _NET_BATMAN_ADV_SEND_H_
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2015-04-18 01:40:28 +08:00
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#include "main.h"
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include "packet.h"
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struct sk_buff;
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2016-07-18 03:04:00 +08:00
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void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
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bool dropped);
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2016-06-21 03:39:54 +08:00
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struct batadv_forw_packet *
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batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
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struct batadv_hard_iface *if_outgoing,
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atomic_t *queue_left,
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struct batadv_priv *bat_priv);
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2013-04-20 19:54:39 +08:00
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int batadv_send_skb_to_orig(struct sk_buff *skb,
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struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *recv_if);
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2016-01-16 16:40:15 +08:00
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int batadv_send_skb_packet(struct sk_buff *skb,
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struct batadv_hard_iface *hard_iface,
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const u8 *dst_addr);
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int batadv_send_broadcast_skb(struct sk_buff *skb,
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struct batadv_hard_iface *hard_iface);
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int batadv_send_unicast_skb(struct sk_buff *skb,
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struct batadv_neigh_node *neigh_node);
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2012-06-06 04:31:31 +08:00
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int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
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2012-05-12 08:09:37 +08:00
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const struct sk_buff *skb,
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batman-adv: Simple (re)broadcast avoidance
With this patch, (re)broadcasting on a specific interfaces is avoided:
* No neighbor: There is no need to broadcast on an interface if there
is no node behind it.
* Single neighbor is source: If there is just one neighbor on an
interface and if this neighbor is the one we actually got this
broadcast packet from, then we do not need to echo it back.
* Single neighbor is originator: If there is just one neighbor on
an interface and if this neighbor is the originator of this
broadcast packet, then we do not need to echo it back.
Goodies for BATMAN V:
("Upgrade your BATMAN IV network to V now to get these for free!")
Thanks to the split of OGMv1 into two packet types, OGMv2 and ELP
that is, we can now apply the same optimizations stated above to OGMv2
packets, too.
Furthermore, with BATMAN V, rebroadcasts can be reduced in certain
multi interface cases, too, where BATMAN IV cannot. This is thanks to
the removal of the "secondary interface originator" concept in BATMAN V.
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-08-07 18:34:19 +08:00
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unsigned long delay,
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bool own_packet);
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2012-06-06 04:31:31 +08:00
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void
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batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
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const struct batadv_hard_iface *hard_iface);
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2013-05-23 22:53:01 +08:00
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bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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struct batadv_orig_node *orig_node,
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int packet_subtype);
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2014-02-16 00:47:52 +08:00
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int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int packet_type,
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int packet_subtype,
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struct batadv_orig_node *orig_node,
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unsigned short vid);
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2013-07-03 16:40:00 +08:00
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int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int packet_type,
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2015-05-27 00:34:26 +08:00
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int packet_subtype, u8 *dst_hint,
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2013-11-06 02:31:08 +08:00
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unsigned short vid);
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2013-07-03 16:40:00 +08:00
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int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
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unsigned short vid);
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2013-05-23 22:53:01 +08:00
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/**
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2013-07-03 16:40:00 +08:00
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* batadv_send_skb_via_tt - send an skb via TT lookup
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2013-05-23 22:53:01 +08:00
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* @bat_priv: the bat priv with all the soft interface information
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* @skb: the payload to send
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2014-02-15 18:58:01 +08:00
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* @dst_hint: can be used to override the destination contained in the skb
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2013-06-04 18:11:39 +08:00
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* @vid: the vid to be used to search the translation table
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2013-05-23 22:53:01 +08:00
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*
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2013-07-03 16:40:00 +08:00
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* Look up the recipient node for the destination address in the ethernet
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* header via the translation table. Wrap the given skb into a batman-adv
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* unicast header. Then send this frame to the according destination node.
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*
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2015-09-16 01:00:48 +08:00
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* Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
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2013-05-23 22:53:01 +08:00
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*/
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2013-07-03 16:40:00 +08:00
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static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
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2015-05-27 00:34:26 +08:00
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struct sk_buff *skb, u8 *dst_hint,
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2013-07-03 16:40:00 +08:00
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unsigned short vid)
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2013-05-23 22:53:01 +08:00
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{
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2013-07-03 16:40:00 +08:00
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return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
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2013-11-06 02:31:08 +08:00
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dst_hint, vid);
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2013-05-23 22:53:01 +08:00
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}
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/**
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2013-07-03 16:40:00 +08:00
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* batadv_send_skb_via_tt_4addr - send an skb via TT lookup
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2013-05-23 22:53:01 +08:00
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* @bat_priv: the bat priv with all the soft interface information
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* @skb: the payload to send
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* @packet_subtype: the unicast 4addr packet subtype to use
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2014-02-15 18:58:01 +08:00
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* @dst_hint: can be used to override the destination contained in the skb
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2013-06-04 18:11:39 +08:00
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* @vid: the vid to be used to search the translation table
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2013-05-23 22:53:01 +08:00
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*
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2013-07-03 16:40:00 +08:00
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* Look up the recipient node for the destination address in the ethernet
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* header via the translation table. Wrap the given skb into a batman-adv
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* unicast-4addr header. Then send this frame to the according destination
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* node.
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*
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2015-09-16 01:00:48 +08:00
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* Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
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2013-05-23 22:53:01 +08:00
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*/
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2013-07-03 16:40:00 +08:00
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static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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int packet_subtype,
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2015-05-27 00:34:26 +08:00
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u8 *dst_hint,
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2013-07-03 16:40:00 +08:00
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unsigned short vid)
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2013-05-23 22:53:01 +08:00
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{
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2013-07-03 16:40:00 +08:00
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return batadv_send_skb_via_tt_generic(bat_priv, skb,
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BATADV_UNICAST_4ADDR,
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2013-11-06 02:31:08 +08:00
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packet_subtype, dst_hint, vid);
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2013-05-23 22:53:01 +08:00
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}
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2010-12-13 19:19:28 +08:00
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#endif /* _NET_BATMAN_ADV_SEND_H_ */
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