batman-adv: Fix skbuff rcsum on packet reroute

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commit fc04fdb2c8 upstream.

batadv_check_unicast_ttvn may redirect a packet to itself or another
originator. This involves rewriting the ttvn and the destination address in
the batadv unicast header. These field were not yet pulled (with skb rcsum
update) and thus any change to them also requires a change in the receive
checksum.

Reported-by: Matthias Schiffer <mschiffer@universe-factory.net>
Fixes: a73105b8d4 ("batman-adv: improved client announcement mechanism")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Sven Eckelmann 2018-03-16 21:14:32 +01:00 • committed by Ben Hutchings

parent c0809b34e3

commit 95917cc978

1 changed files with 10 additions and 5 deletions

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net/batman-adv/routing.c

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