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[PATCH] rt2x00: Add get_tx_data_len callback function

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The TX datalen must always be converted to a value rt73 and rt2500usb
understand. Both require to use a different size then skb->len.
First off this is required because the descriptor must be added,
but the second is because the value must be a multiple of either 2 or 4,
and it should not be a multiple of the USB packetmax

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn
2007-10-06 14:15:46 +02:00
committed by David S. Miller
parent 9ee8f57e0a
commit dd9fa2d21a
4 changed files with 56 additions and 23 deletions
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16
drivers/net/wireless/rt2x00/rt73usb.c
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@@ -1286,6 +1286,21 @@ static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
rt2x00_desc_write(txd, 0, word);
}
static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
int maxpacket, struct sk_buff *skb)
{
int length;
/*
* The length _must_ be a multiple of 4,
* but it must _not_ be a multiple of the USB packet size.
*/
length = roundup(skb->len, 4);
length += (4 * !(length % maxpacket));
return length;
}
/*
* TX data initialization
*/
@@ -2012,6 +2027,7 @@ static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
.link_tuner = rt73usb_link_tuner,
.write_tx_desc = rt73usb_write_tx_desc,
.write_tx_data = rt2x00usb_write_tx_data,
.get_tx_data_len = rt73usb_get_tx_data_len,
.kick_tx_queue = rt73usb_kick_tx_queue,
.fill_rxdone = rt73usb_fill_rxdone,
.config_mac_addr = rt73usb_config_mac_addr,