The rx copybreak part is straightforward.
The align field in struct rtl_cfg_info is related to the alignment
requirements of the DMA operation. Its value is set at 2 to limit the
scale of possible regression but my old v1.21 8169 datasheet claims a
8 bytes requirements (that was never followed by the driver of course)
and the 8101/8168 go with a plain 8 bytes alignments. Yuck, yuck...
Signed-off-by: Francois Romieu <[EMAIL PROTECTED]>
Cc: Edward Hsu <[EMAIL PROTECTED]>
---
drivers/net/r8169.c | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 241e204..1111ca4 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1500,7 +1500,7 @@ static const struct rtl_cfg_info {
[RTL_CFG_0] = {
.hw_start = rtl_hw_start_8169,
.region = 1,
- .align = NET_IP_ALIGN,
+ .align = 2,
.intr_event = SYSErr | LinkChg | RxOverflow |
RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
.napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow
@@ -2657,17 +2657,16 @@ static inline void rtl8169_rx_csum(struct sk_buff *skb,
struct RxDesc *desc)
}
static inline int rtl8169_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
- struct RxDesc *desc, int rx_buf_sz,
- unsigned int align)
+ struct RxDesc *desc, int rx_buf_sz)
{
int ret = -1;
if (pkt_size < rx_copybreak) {
struct sk_buff *skb;
- skb = dev_alloc_skb(pkt_size + align);
+ skb = dev_alloc_skb(pkt_size + NET_IP_ALIGN);
if (skb) {
- skb_reserve(skb, (align - 1) & (unsigned
long)skb->data);
+ skb_reserve(skb, NET_IP_ALIGN);
eth_copy_and_sum(skb, sk_buff[0]->data, pkt_size, 0);
*sk_buff = skb;
rtl8169_mark_to_asic(desc, rx_buf_sz);
@@ -2743,7 +2742,7 @@ rtl8169_rx_interrupt(struct net_device *dev, struct
rtl8169_private *tp,
PCI_DMA_FROMDEVICE);
if (rtl8169_try_rx_copy(&skb, pkt_size, desc,
- tp->rx_buf_sz, tp->align)) {
+ tp->rx_buf_sz)) {
pci_action = pci_unmap_single;
tp->Rx_skbuff[entry] = NULL;
}
--
1.4.4.2
-
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