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| author | Francois Romieu <romieu@fr.zoreil.com> | 2007-02-28 23:16:57 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-08 22:16:44 -0400 |
| commit | e9f63f30863fd778a5329e93c7e2208b9bcb5b79 (patch) | |
| tree | f6744d61585961022468e96164684987dd4fd1a1 /drivers/net/r8169.c | |
| parent | 275391a482c436282dde57beeffc5d61b229fdd2 (diff) | |
| download | op-kernel-dev-e9f63f30863fd778a5329e93c7e2208b9bcb5b79.zip op-kernel-dev-e9f63f30863fd778a5329e93c7e2208b9bcb5b79.tar.gz | |
r8169: align the IP header when there is no DMA constraint
Align the IP header when the chipset can DMA at any location (plain 0x8169).
Otherwise (0x8136/0x8168) obey the constraint imposed by the hardware.
This patch complements the previous alignment rework done for copybreak.
Original idea from Philip Craig <philipc@snapgear.com>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Philip Craig <philipc@snapgear.com>
Cc: Mike Isely <isely@pobox.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
Diffstat (limited to 'drivers/net/r8169.c')
| -rw-r--r-- | drivers/net/r8169.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index d8862cd..1942bf7 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -1415,7 +1415,7 @@ static const struct rtl_cfg_info { [RTL_CFG_0] = { .hw_start = rtl_hw_start_8169, .region = 1, - .align = 2, + .align = 0, .intr_event = SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxOK | RxErr, .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow @@ -2076,12 +2076,15 @@ static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev, { struct sk_buff *skb; dma_addr_t mapping; + unsigned int pad; - skb = netdev_alloc_skb(dev, rx_buf_sz + align); + pad = align ? align : NET_IP_ALIGN; + + skb = netdev_alloc_skb(dev, rx_buf_sz + pad); if (!skb) goto err_out; - skb_reserve(skb, (align - 1) & (unsigned long)skb->data); + skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad); mapping = pci_map_single(pdev, skb->data, rx_buf_sz, PCI_DMA_FROMDEVICE); |
