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batman-adv: Introduce a configurable per interface hop penalty

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In some setups multiple hard interfaces with similar link qualities
or throughput values are available. But people have expressed the desire
to consider one of them as a backup only.

Some creative solutions are currently in use: Such people are
configuring multiple batman-adv mesh/soft interfaces, wire them
together with some veth pairs and then tune the hop penalty to achieve
an effect similar to a tunable per interface hop penalty.

This patch introduces a new, configurable, per hard interface hop penalty
to simplify such setups.

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>
This commit is contained in:
Linus Lüssing
2020-06-01 22:35:22 +02:00
committed by Simon Wunderlich
parent bccb48c89f
commit 3bda14d09d
6 changed files with 40 additions and 13 deletions
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3
include/uapi/linux/batman_adv.h
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@@ -427,7 +427,8 @@ enum batadv_nl_attrs {
/**
* @BATADV_ATTR_HOP_PENALTY: defines the penalty which will be applied
* to an originator message's tq-field on every hop.
* to an originator message's tq-field on every hop and/or per
* hard interface
*/
BATADV_ATTR_HOP_PENALTY,