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 1db774c..3213f6f 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.
