ChangeSet 1.985.10.19, 2003/03/25 14:11:56-08:00, [EMAIL PROTECTED]
[PATCH] USB: CDC Ethernet zero packet fix
drivers/usb/net/cdc-ether.c | 19 ++++---------------
1 files changed, 4 insertions(+), 15 deletions(-)
diff -Nru a/drivers/usb/net/cdc-ether.c b/drivers/usb/net/cdc-ether.c
--- a/drivers/usb/net/cdc-ether.c Tue Mar 25 16:44:39 2003
+++ b/drivers/usb/net/cdc-ether.c Tue Mar 25 16:44:39 2003
@@ -269,22 +269,8 @@
static int CDCEther_start_xmit( struct sk_buff *skb, struct net_device *net )
{
ether_dev_t *ether_dev = net->priv;
- int count;
int res;
- // If we are told to transmit an ethernet frame that fits EXACTLY
- // into an integer number of USB packets, we force it to send one
- // more byte so the device will get a runt USB packet signalling the
- // end of the ethernet frame
- if ( (skb->len) ^ (ether_dev->data_ep_out_size) ) {
- // It was not an exact multiple
- // no need to add anything extra
- count = skb->len;
- } else {
- // Add one to make it NOT an exact multiple
- count = skb->len + 1;
- }
-
// Tell the kernel, "No more frames 'til we are done
// with this one.'
netif_stop_queue( net );
@@ -299,7 +285,10 @@
write_bulk_callback, ether_dev );
// Tell the URB how much it will be transporting today
- ether_dev->tx_urb->transfer_buffer_length = count;
+ ether_dev->tx_urb->transfer_buffer_length = skb->len;
+
+ /* Deal with the zero length problem, I hope */
+ ether_dev->tx_urb->transfer_flags |= URB_ZERO_PACKET;
// Send the URB on its merry way.
if ((res = usb_submit_urb(ether_dev->tx_urb, GFP_ATOMIC))) {
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