Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2053ed02a62f2c66d9cb9b51aea0836a7d8dbabf
Commit:     2053ed02a62f2c66d9cb9b51aea0836a7d8dbabf
Parent:     f1e9a4eaea5c22cfb557e58a8cd0ca3bde5160a5
Author:     Auke Kok <[EMAIL PROTECTED]>
AuthorDate: Tue May 15 15:29:16 2007 -0700
Committer:  Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Mon May 21 19:41:19 2007 -0400

    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 <[EMAIL PROTECTED]>
    Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
 include/linux/if_ether.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

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.
-
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