From 6a5ae683b942400b8705c879d51fbefc9edc796a Mon Sep 17 00:00:00 2001
From: wpaul <wpaul@FreeBSD.org>
Date: Sat, 19 Dec 1998 04:19:44 +0000
Subject: Trim the ethernet CRC from received frames manually in wb_rxeof().
 The Winbond chip always includes the CRC with every received frame, and I
 can't find anything in the Winbond manual that indicates you can program it
 not to do this.

---
 sys/pci/if_wb.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'sys/pci/if_wb.c')

diff --git a/sys/pci/if_wb.c b/sys/pci/if_wb.c
index 1fa7b9a..3e3e634 100644
--- a/sys/pci/if_wb.c
+++ b/sys/pci/if_wb.c
@@ -29,7 +29,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: if_wb.c,v 1.3 1998/12/10 02:02:30 archie Exp $
+ *	$Id: if_wb.c,v 1.4 1998/12/14 06:32:56 dillon Exp $
  */
 
 /*
@@ -121,7 +121,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-	"$Id: if_wb.c,v 1.3 1998/12/10 02:02:30 archie Exp $";
+	"$Id: if_wb.c,v 1.4 1998/12/14 06:32:56 dillon Exp $";
 #endif
 
 /*
@@ -1375,6 +1375,15 @@ static void wb_rxeof(sc)
 		total_len = WB_RXBYTES(cur_rx->wb_ptr->wb_status);
 
 		/*
+		 * XXX The Winbond chip includes the CRC with every
+		 * received frame, and there's no way to turn this
+		 * behavior off (at least, I can't find anything in
+	 	 * the manual that explains how to do it) so we have
+		 * to trim off the CRC manually.
+		 */
+		total_len -= ETHER_CRC_LEN;
+
+		/*
 		 * Try to conjure up a new mbuf cluster. If that
 		 * fails, it means we have an out of memory condition and
 		 * should leave the buffer in place and continue. This will
-- 
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