Re: [B.A.T.M.A.N.] [PATCH maint v2] batman-adv: fix TT sync flag inconsistencies

[Sven Eckelmann <sven@narfation.org>]

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On Donnerstag, 6. Juli 2017 07:02:25 CEST Linus Lüssing wrote:
> This patch fixes an issue in the translation table code potentially
> leading to a TT Request + Response storm. The issue may occur for nodes
> involving BLA and an inconsistent configuration of the batman-adv AP
> isolation feature. However, since the new multicast optimizations, a
> single, malformed packet may lead to a mesh-wide, persistent
> Denial-of-Service, too.
[...]
> This patch fixes this issue by storing the flags used in the CRC
> calculation on a a per TT orig entry basis to be able to respond with
> the correct, original flags in an intermediate TT Response for one
> thing. And to be able to correctly unset sync flags once all nodes
> announcing a sync flag vanish for another.
> 
> Fixes: fa614fd04692 ("batman-adv: fix tt_global_entries flags update")
> Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>

Simon wanted to have a look at this patch before applying it. But I've already 
queued it up for openwrt-routing [1]. This should hopefully help people which 
want to test it.

Kind regards,
	Sven

[1] https://github.com/openwrt-routing/packages/pull/316


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