can: flexcan: add support for timestamp based rx-offload

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The flexcan IP core has 64 mailboxes. For now they are configured for
RX as a hardware FIFO. This FIFO has a fixed depth of 6 CAN frames. In
some high load scenarios it turns out thas this buffer is too small.

In order to have a buffer larger than the 6 frames FIFO, this patch adds
support for timestamp based offloading via the generic rx-offload
infrastructure.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Marc Kleine-Budde 2015-09-01 09:00:13 +02:00

parent 9eb7aa8911

commit b3cf53e988

1 changed files with 129 additions and 29 deletions

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158

drivers/net/can/flexcan.c

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