net: mac802154: Add a warning in the hot path

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We should never start a transmission after the queue has been stopped.

But because it might work we don't kill the function here but rather
warn loudly the user that something is wrong.

Set a flag when the queue should remain stopped. Reset this flag when
the queue actually gets restarded. Just check this value to know if a
transmission is legitimate, warn if it is not.

Turn the flags variable into an unsigned long to allow the use of atomic
helpers on it.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20220519150516.443078-11-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>

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Miquel Raynal 2022-05-19 17:05:15 +02:00 • committed by Stefan Schmidt

parent ddd9ee7cda

commit 2b13db13af

3 changed files with 20 additions and 2 deletions

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5

include/net/cfg802154.h

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18

net/mac802154/tx.c

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1

net/mac802154/util.c

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