From: Auke Kok <auke-jan.h.kok@intel.com>
Date: Tue, 15 May 2007 22:29:16 +0000 (-0700)
Subject: Add constant for FCS/CRC length (frame check sequence)
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=2053ed02a62f2c66d9cb9b51aea0836a7d8dbabf;p=openwrt%2Fstaging%2Fblogic.git

Add constant for FCS/CRC length (frame check sequence)

About a dozen drivers that have some form of crc checksumming or offloading
use this constant, warranting a global define for it.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index 1db774cf9dc2..3213f6f4aa58 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -33,6 +33,7 @@
 #define ETH_ZLEN	60		/* Min. octets in frame sans FCS */
 #define ETH_DATA_LEN	1500		/* Max. octets in payload	 */
 #define ETH_FRAME_LEN	1514		/* Max. octets in frame sans FCS */
+#define ETH_FCS_LEN	4		/* Octets in the FCS		 */
 
 /*
  *	These are the defined Ethernet Protocol ID's.