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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>
Auke Kok 18 years ago
parent
f1e9a4eaea
commit
2053ed02a6
1 changed files with 1 additions and 0 deletions
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  1. 1 0
      include/linux/if_ether.h

+ 1 - 0
include/linux/if_ether.h
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@@ -33,6 +33,7 @@
 
 #define ETH_ZLEN	60		/* Min. octets in frame sans FCS */
 
 #define ETH_ZLEN	60		/* Min. octets in frame sans FCS */
 
 #define ETH_DATA_LEN	1500		/* Max. octets in payload	 */
 
 #define ETH_DATA_LEN	1500		/* Max. octets in payload	 */
 
 #define ETH_FRAME_LEN	1514		/* Max. octets in frame sans FCS */
 
 #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.
 
  *	These are the defined Ethernet Protocol ID's.