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authorOliver Hartkopp <socketcan@hartkopp.net>2020-11-10 13:18:46 +0300
committerMarc Kleine-Budde <mkl@pengutronix.de>2020-11-20 11:43:29 +0300
commit69d98969a0540039fc04e0f22bbe9f41b0a13d66 (patch)
treecaf7410d6dd6ec78a672734a095c754d2a540156 /include
parentea7800565a128c1adafa1791ce80afd6016fe21c (diff)
downloadlinux-69d98969a0540039fc04e0f22bbe9f41b0a13d66.tar.xz
can: rename get_can_dlc() macro with can_cc_dlc2len()
The get_can_dlc() macro is used to ensure the payload length information of the Classical CAN frame to be max 8 bytes (the CAN_MAX_DLEN). Rename the macro and use the correct constant in preparation of the len/dlc cleanup for Classical CAN frames. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Link: https://lore.kernel.org/r/20201110101852.1973-3-socketcan@hartkopp.net Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/can/dev.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 41ff31795320..9bc84c6978ec 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -98,14 +98,14 @@ static inline unsigned int can_bit_time(const struct can_bittiming *bt)
}
/*
- * get_can_dlc(value) - helper macro to cast a given data length code (dlc)
- * to u8 and ensure the dlc value to be max. 8 bytes.
+ * can_cc_dlc2len(value) - convert a given data length code (dlc) of a
+ * Classical CAN frame into a valid data length of max. 8 bytes.
*
* To be used in the CAN netdriver receive path to ensure conformance with
* ISO 11898-1 Chapter 8.4.2.3 (DLC field)
*/
-#define get_can_dlc(i) (min_t(u8, (i), CAN_MAX_DLC))
-#define get_canfd_dlc(i) (min_t(u8, (i), CANFD_MAX_DLC))
+#define can_cc_dlc2len(dlc) (min_t(u8, (dlc), CAN_MAX_DLEN))
+#define get_canfd_dlc(dlc) (min_t(u8, (dlc), CANFD_MAX_DLC))
/* Check for outgoing skbs that have not been created by the CAN subsystem */
static inline bool can_skb_headroom_valid(struct net_device *dev,