From 23de559b8d3537f972f325e7e015c18aa2e4d987 Mon Sep 17 00:00:00 2001
From: Peter Korsgaard <jacmet@sunsite.dk>
Date: Wed, 27 Jun 2007 08:14:50 +0200
Subject: [PATCH] dm9601: HW header size shouldn't be included in packet length
The dm9601 driver was including the 2 byte hardware header in the
packet length, causing the HW to send 2 extra bytes of garbage on tx.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
drivers/net/usb/dm9601.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c
index a67638601477..ac200b0f6a92 100644
--- a/drivers/net/usb/dm9601.c
+++ b/drivers/net/usb/dm9601.c
@@ -489,6 +489,8 @@ static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
b3..n: packet data
*/
+ len = skb->len;
+
if (skb_headroom(skb) < DM_TX_OVERHEAD) {
struct sk_buff *skb2;
@@ -501,10 +503,9 @@ static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
__skb_push(skb, DM_TX_OVERHEAD);
- len = skb->len;
/* usbnet adds padding if length is a multiple of packet size
if so, adjust length value in header */
- if ((len % dev->maxpacket) == 0)
+ if ((skb->len % dev->maxpacket) == 0)
len++;
skb->data[0] = len;
--
2.20.1