Use the source, Luke.
1674 static int rtl8139_start_xmit (struct sk_buff *skb,
....
1681 /* Calculate the next Tx descriptor entry. */
1682 >>--> entry = tp->cur_tx % NUM_TX_DESC;
1683
1684 if (likely(len < TX_BUF_SIZE)) {
1685 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
....
1714 static void rtl8139_tx_interrupt (struct net_device *dev,
....
1724 dirty_tx = tp->dirty_tx;
1725 tx_left = tp->cur_tx - dirty_tx;
1726 while (tx_left > 0) {
1727 >>--> int entry = dirty_tx % NUM_TX_DESC;
> -----Original Message-----
> From: adamski [mailto:adam_lista_linux@poczta.onet.pl]
> Sent: Wednesday, August 27, 2003 4:29 PM
> To: Eble, Dan
> Cc: Lista Linux-Net
> Subject: RE: tx_interrupt - identifying packet
>
>
>
>
> Perhaps you could create an array of length NUM_TX_DESC.
> When a packet is
> enqueued in the tx ring, copy your tag from the skb header into the
> element of the array that parallels the tx buffer in the ring. When
> tx_interrupt occurs, read the tag back from the array.
>
>
> which variable tells me about number of descriptor read (packet txed)?
>
> as far as i understand DESC stands for descriptor and
> descriptor can be
> mapped to single packet, right???
>
> regards
>
> adam
>
> -
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