netdev - [PATCH V1 3/4] can: add can_is_canfd

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Date:	Wed, 5 Nov 2014 15:58:45 +0800
From:	Dong Aisheng <b29396@...escale.com>
To:	<linux-can@...r.kernel.org>
CC:	<mkl@...gutronix.de>, <wg@...ndegger.com>,
	<varkabhadram@...il.com>, <netdev@...r.kernel.org>,
	<socketcan@...tkopp.net>, <b29396@...escale.com>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH V1 3/4] can: add can_is_canfd_skb() API

The CAN device drivers can use it to check if the frame to send is on
CAN FD mode or normal CAN mode.

Signed-off-by: Dong Aisheng <b29396@...escale.com>
---
 include/linux/can/dev.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 6992afc..fe3be29 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -99,6 +99,11 @@ inval_skb:
 	return 1;
 }
 
+static inline int can_is_canfd_skb(struct sk_buff *skb)
+{
+	return skb->protocol == htons(ETH_P_CANFD);
+}
+
 /* get data length from can_dlc with sanitized can_dlc */
 u8 can_dlc2len(u8 can_dlc);
 
-- 
1.9.1

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