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tlan: Fix small (< 64 bytes) datagram transmissions

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The TLAN chip does not support tranmissions smaller than 64
bytes. Smaller transfers need to be padded up to that size. This was
broken by commit id 41873e9aff ("tlan:
get rid of padding buffer").

<URL:http://bugzilla.kernel.org/show_bug.cgi?id=11754>

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sakari Ailus 2008-12-16 01:44:05 -08:00 committed by David S. Miller
parent 092cab7e2c
commit 8953f12827
1 changed files with 6 additions and 4 deletions
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10
drivers/net/tlan.c
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@ -1098,6 +1098,7 @@ static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
dma_addr_t tail_list_phys;
u8 *tail_buffer;
unsigned long flags;
unsigned int txlen;
if ( ! priv->phyOnline ) {
TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
@ -1108,6 +1109,7 @@ static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
return 0;
txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
tail_list = priv->txList + priv->txTail;
tail_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txTail;
@ -1125,16 +1127,16 @@ static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
if ( bbuf ) {
tail_buffer = priv->txBuffer + ( priv->txTail * TLAN_MAX_FRAME_SIZE );
skb_copy_from_linear_data(skb, tail_buffer, skb->len);
skb_copy_from_linear_data(skb, tail_buffer, txlen);
} else {
tail_list->buffer[0].address = pci_map_single(priv->pciDev,
skb->data, skb->len,
skb->data, txlen,
PCI_DMA_TODEVICE);
TLan_StoreSKB(tail_list, skb);
}
tail_list->frameSize = (u16) skb->len;
tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) skb->len;
tail_list->frameSize = (u16) txlen;
tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
tail_list->buffer[1].count = 0;
tail_list->buffer[1].address = 0;