[PATCH] skb_padto()-area fixes in 8390, wavelan
Ar Iau, 2006-06-22 am 21:29 +1000, ysgrifennodd Herbert Xu:
> Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> >
> > The 8390 change (corrected version) also makes 8390.c faster so should
> > be applied anyway, and the orinoco one fixes some code that isn't even
> > needed and someone forgot to remove long ago. Otherwise the skb_padto
>
> Yeah I agree totally. However, I haven't actually seen the fixed 8390
> version being posted yet or at least not to netdev :)
Ah the resounding clang of a subtle hint ;)
Signed-off-by: Alan Cox <alan@redhat.com>
- Return 8390.c to the old way of handling short packets (which is also
faster)
- Remove the skb_padto from orinoco. This got left in when the padding bad
write patch was added and is actually not needed. This is fixing a merge
error way back when.
- Wavelan can also use the stack based buffer trick if you want
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/8390.c b/drivers/net/8390.c
index f870274..86be96a 100644
--- a/drivers/net/8390.c
+++ b/drivers/net/8390.c
@@ -275,12 +275,14 @@
struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
int send_length = skb->len, output_page;
unsigned long flags;
+ char buf[ETH_ZLEN];
+ char *data = skb->data;
if (skb->len < ETH_ZLEN) {
- skb = skb_padto(skb, ETH_ZLEN);
- if (skb == NULL)
- return 0;
+ memset(buf, 0, ETH_ZLEN); /* more efficient than doing just the needed bits */
+ memcpy(buf, data, skb->len);
send_length = ETH_ZLEN;
+ data = buf;
}
/* Mask interrupts from the ethercard.
@@ -347,7 +349,7 @@
* trigger the send later, upon receiving a Tx done interrupt.
*/
- ei_block_output(dev, send_length, skb->data, output_page);
+ ei_block_output(dev, send_length, data, output_page);
if (! ei_local->txing)
{
diff --git a/drivers/net/wireless/wavelan.c b/drivers/net/wireless/wavelan.c
index b327b64..5b69befd 100644
--- a/drivers/net/wireless/wavelan.c
+++ b/drivers/net/wireless/wavelan.c
@@ -2903,6 +2903,7 @@
{
net_local *lp = (net_local *) dev->priv;
unsigned long flags;
+ char data[ETH_ZLEN];
#ifdef DEBUG_TX_TRACE
printk(KERN_DEBUG "%s: ->wavelan_packet_xmit(0x%X)\n", dev->name,
@@ -2937,15 +2938,16 @@
* able to detect collisions, therefore in theory we don't really
* need to pad. Jean II */
if (skb->len < ETH_ZLEN) {
- skb = skb_padto(skb, ETH_ZLEN);
- if (skb == NULL)
- return 0;
+ memset(data, 0, ETH_ZLEN);
+ memcpy(data, skb->data, skb->len);
+ /* Write packet on the card */
+ if(wv_packet_write(dev, data, ETH_ZLEN))
+ return 1; /* We failed */
}
-
- /* Write packet on the card */
- if(wv_packet_write(dev, skb->data, skb->len))
+ else if(wv_packet_write(dev, skb->data, skb->len))
return 1; /* We failed */
+
dev_kfree_skb(skb);
#ifdef DEBUG_TX_TRACE