tree b184ef86fca760afe77338d4b273f1b798bb83ae
parent 33e0acf13c744efefba4322c1963968f538ff671
author Sven Eckelmann <sven@narfation.org> 1521231272 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1527659437 +0200

batman-adv: Fix skbuff rcsum on packet reroute

[ Upstream commit fc04fdb2c8a894283259f5621d31d75610701091 ]

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: a73105b8d4c7 ("batman-adv: improved client announcement mechanism")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>