linux-kernel - [PATCH net-next RFC 7/9] ptp: add offset for reserved field to header

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Date:   Thu, 28 Sep 2017 10:25:39 -0500
From:   Brandon Streiff <brandon.streiff@...com>
To:     <netdev@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        "Vivien Didelot" <vivien.didelot@...oirfairelinux.com>,
        Richard Cochran <richardcochran@...il.com>,
        Erik Hons <erik.hons@...com>,
        Brandon Streiff <brandon.streiff@...com>
Subject: [PATCH net-next RFC 7/9] ptp: add offset for reserved field to header

There is a four-byte "reserved" field at octet 16 in PTPv2.

Signed-off-by: Brandon Streiff <brandon.streiff@...com>
---
 include/linux/ptp_classify.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
index a079656..b9b0073 100644
--- a/include/linux/ptp_classify.h
+++ b/include/linux/ptp_classify.h
@@ -47,6 +47,7 @@
 #define PTP_EV_PORT 319
 #define PTP_GEN_BIT 0x08 /* indicates general message, if set in message type */
 
+#define OFF_PTP_RESERVED	16 /* PTPv2 only */
 #define OFF_PTP_SOURCE_UUID	22 /* PTPv1 only */
 #define OFF_PTP_SEQUENCE_ID	30
 #define OFF_PTP_CONTROL		32 /* PTPv1 only */
-- 
2.1.4