can: dev: extend struct can_skb_priv to hold CAN frame length

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In order to implement byte queue limits (bql) in CAN drivers, the length of the
CAN frame needs to be passed into the networking stack after queueing and after
transmission completion.

To avoid to calculate this length twice, extend the struct can_skb_priv to hold
the length of the CAN frame and extend __can_get_echo_skb() to return that
value.

Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20210111141930.693847-12-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Marc Kleine-Budde 2021-01-11 15:19:26 +01:00

parent 85d99c3e2a

commit f0ef72febc

3 changed files with 11 additions and 4 deletions

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2

drivers/net/can/dev/rx-offload.c

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9

drivers/net/can/dev/skb.c

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4

include/linux/can/skb.h

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