batman-adv: Make TT capability changes atomic

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[ Upstream commit ac4eebd484 ]

Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One
OGM handler might undo the set/clear of a specific bit from another
handler run in between.

Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions.

Fixes: e17931d1a6 ("batman-adv: introduce capability initialization bitfield")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Linus Lüssing 2015-06-16 17:10:24 +02:00 • committed by Sasha Levin

parent 81aab3d164

commit 722ccda13b

2 changed files with 7 additions and 5 deletions

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8

net/batman-adv/translation-table.c

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4

net/batman-adv/types.h

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