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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-01-11 15:19:24 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-01-14 08:43:41 +0100 |
| commit | 99b7beb0431a4b9728023e9169ed15af678d2c7f (patch) | |
| tree | 769fdd74658e90b5e090ddfb458f674c0deab913 /include/linux/can | |
| parent | 652562e5ff06d27b9b83c8166cb71845a55607ad (diff) | |
| download | linux-99b7beb0431a4b9728023e9169ed15af678d2c7f.tar.gz linux-99b7beb0431a4b9728023e9169ed15af678d2c7f.tar.bz2 linux-99b7beb0431a4b9728023e9169ed15af678d2c7f.zip | |
can: length: canfd_sanitize_len(): add function to sanitize CAN-FD data length
The data field in CAN-FD frames have specifig frame length (0, 1, 2, 3, 4, 5,
6, 7, 8, 12, 16, 20, 24, 32, 48, 64). This function "rounds" up a given length
to the next valid CAN-FD frame length.
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20210111141930.693847-10-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include/linux/can')
| -rw-r--r-- | include/linux/can/length.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/can/length.h b/include/linux/can/length.h index 156b9d17969a..b2313b2a0b02 100644 --- a/include/linux/can/length.h +++ b/include/linux/can/length.h @@ -45,4 +45,10 @@ u8 can_fd_dlc2len(u8 dlc); /* map the sanitized data length to an appropriate data length code */ u8 can_fd_len2dlc(u8 len); +/* map the data length to an appropriate data link layer length */ +static inline u8 canfd_sanitize_len(u8 len) +{ + return can_fd_dlc2len(can_fd_len2dlc(len)); +} + #endif /* !_CAN_LENGTH_H */ |