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authorDong Aisheng <b29396@freescale.com>2014-11-07 16:45:12 +0800
committerMarc Kleine-Budde <mkl@pengutronix.de>2014-11-18 13:23:31 +0100
commit98e69016a11b2b9398bea668442193b3b362cd43 (patch)
treec37f796c64213c3b024c39298663d4281e0fb61e /include/linux
parent67b5909edccfe3ea3b85b1d96284d2c53e3fd47c (diff)
can: dev: add can_is_canfd_skb() API
The CAN device drivers can use can_is_canfd_skb() to check if the frame to send is on CAN FD mode or normal CAN mode. Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Dong Aisheng <b29396@freescale.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/can/dev.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 6992afc6ba7f..b37ea95bc348 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -99,6 +99,12 @@ inval_skb:
return 1;
}
+static inline bool can_is_canfd_skb(const struct sk_buff *skb)
+{
+ /* the CAN specific type of skb is identified by its data length */
+ return skb->len == CANFD_MTU;
+}
+
/* get data length from can_dlc with sanitized can_dlc */
u8 can_dlc2len(u8 can_dlc);