From aa95abefccc25efea5c8654bc3475e8161319b94 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 22 Jun 2006 14:25:34 +0100 Subject: [PATCH] [PATCH] skb_padto()-area fixes in 8390, wavelan Ar Iau, 2006-06-22 am 21:29 +1000, ysgrifennodd Herbert Xu: > Alan Cox 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 - 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 --- drivers/net/8390.c | 10 ++++++---- drivers/net/wireless/wavelan.c | 14 ++++++++------ 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/net/8390.c b/drivers/net/8390.c index f8702742008..86be96af9c8 100644 --- a/drivers/net/8390.c +++ b/drivers/net/8390.c @@ -275,12 +275,14 @@ static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev) 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 @@ static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev) * 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 b327b640823..5b69befdab7 100644 --- a/drivers/net/wireless/wavelan.c +++ b/drivers/net/wireless/wavelan.c @@ -2903,6 +2903,7 @@ static int wavelan_packet_xmit(struct sk_buff *skb, struct net_device * dev) { 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 @@ static int wavelan_packet_xmit(struct sk_buff *skb, struct net_device * dev) * 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 -- 2.20.1