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From: Stephan von Krawczynski <skraw@ithnet.com>
To: linux-ns83820@kvack.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: Problem Report: ns83820 / 802.1Q vlan / 2.4.23
Date: Mon, 8 Dec 2003 17:40:08 +0100	[thread overview]
Message-ID: <20031208174008.04bf0014.skraw@ithnet.com> (raw)
In-Reply-To: <20031208145622.52d4ea11.skraw@ithnet.com>

On Mon, 8 Dec 2003 14:56:22 +0100
Stephan von Krawczynski <skraw@ithnet.com> wrote:

> Hello,
> 
> I just experienced a problem with ns83820 and 802.1Q vlan support. It seems
> that incoming packets get dropped if the device is connected to a tagged
> switch port. Reducing the mtu solves the problem but is of course not nice.
> I remember some old docs where it says there can be problems because of the
> oversized tagged packets. Intel e100 seems to work flawlessly in same setup.

Regarding this problem I just did this incredibly complex patch, which seems to
work. Maintainer please beat me...

;-)
Regards,
Stephan


--- drivers/net/ns83820.c-orig  2003-12-08 17:33:14.000000000 +0100
+++ drivers/net/ns83820.c       2003-12-08 17:33:31.000000000 +0100
@@ -141,7 +141,7 @@
 #define NR_TX_DESC     128
 
 /* not tunable */
-#define REAL_RX_BUF_SIZE (RX_BUF_SIZE + 14)    /* rx/tx mac addr + type */
+#define REAL_RX_BUF_SIZE (RX_BUF_SIZE + 14 + 4)        /* rx/tx mac addr + type + vlan*/
 
 #define MIN_TX_DESC_FREE       8
 

      reply	other threads:[~2003-12-08 16:49 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-08 13:56 Problem Report: ns83820 / 802.1Q vlan / 2.4.23 Stephan von Krawczynski
2003-12-08 16:40 ` Stephan von Krawczynski [this message]

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