netdev - [PATCH 1/2] can: Added constants containing length of CAN identifiers

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Message-Id: <1337937157-7680-1-git-send-email-lisovy@gmail.com>
Date:	Fri, 25 May 2012 11:12:36 +0200
From:	Rostislav Lisovy <lisovy@...il.com>
To:	netdev@...r.kernel.org
Cc:	linux-can@...r.kernel.org, pisa@....felk.cvut.cz,
	sojkam1@....cvut.cz, oliver@...tkopp.net,
	Rostislav Lisovy <lisovy@...il.com>
Subject: [PATCH 1/2] can: Added constants containing length of CAN identifiers

The necessary information might be determined out of the CAN_*_MASK,
however it is undesirable to misuse masks for such purpose.

Signed-off-by: Rostislav Lisovy <lisovy@...il.com>
---
 include/linux/can.h |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/can.h b/include/linux/can.h
index 9a19bcb..08d1610 100644
--- a/include/linux/can.h
+++ b/include/linux/can.h
@@ -38,6 +38,9 @@
  */
 typedef __u32 canid_t;
 
+#define CAN_SFF_ID_BITS		11
+#define CAN_EFF_ID_BITS		29
+
 /*
  * Controller Area Network Error Frame Mask structure
  *
-- 
1.7.9.5

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