batman-adv: Make DAT capability changes atomic

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[ Upstream commit 65d7d46050 ]

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: 17cf0ea455 ("batman-adv: tvlv - add distributed arp table container")
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 17:10:22 +02:00 • committed by Sasha Levin

parent 61b027c7ce

commit 6addbc55cf

2 changed files with 6 additions and 5 deletions

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7

net/batman-adv/distributed-arp-table.c

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4

net/batman-adv/types.h

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