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Subject[RFC][PATCH 5/9] r8169 driver conversion

Update the driver to make use of the netdev_alloc_skb() API and the
NETIF_F_MEMALLOC feature.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Daniel Phillips <phillips@google.com>

---
drivers/net/r8169.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
Index: linux-2.6/drivers/net/r8169.c
===================================================================
--- linux-2.6.orig/drivers/net/r8169.c
+++ linux-2.6/drivers/net/r8169.c
@@ -1480,6 +1480,8 @@ rtl8169_init_board(struct pci_dev *pdev,
}
}

+ dev->features |= NETIF_F_MEMALLOC;
+
pci_set_master(pdev);

/* ioremap MMIO region */
@@ -1909,14 +1911,15 @@ static inline void rtl8169_map_to_asic(s
rtl8169_mark_to_asic(desc, rx_buf_sz);
}

-static int rtl8169_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
+static int rtl8169_alloc_rx_skb(struct net_device *dev, struct pci_dev *pdev,
+ struct sk_buff **sk_buff,
struct RxDesc *desc, int rx_buf_sz)
{
struct sk_buff *skb;
dma_addr_t mapping;
int ret = 0;

- skb = dev_alloc_skb(rx_buf_sz + NET_IP_ALIGN);
+ skb = netdev_alloc_skb(dev, rx_buf_sz + NET_IP_ALIGN);
if (!skb)
goto err_out;

@@ -1960,7 +1963,7 @@ static u32 rtl8169_rx_fill(struct rtl816
if (tp->Rx_skbuff[i])
continue;

- ret = rtl8169_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
+ ret = rtl8169_alloc_rx_skb(dev, tp->pci_dev, tp->Rx_skbuff + i,
tp->RxDescArray + i, tp->rx_buf_sz);
if (ret < 0)
break;
@@ -2371,7 +2374,8 @@ static inline void rtl8169_rx_csum(struc
skb->ip_summed = CHECKSUM_NONE;
}

-static inline int rtl8169_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
+static inline int rtl8169_try_rx_copy(struct net_device *dev,
+ struct sk_buff **sk_buff, int pkt_size,
struct RxDesc *desc, int rx_buf_sz)
{
int ret = -1;
@@ -2379,7 +2383,7 @@ static inline int rtl8169_try_rx_copy(st
if (pkt_size < rx_copybreak) {
struct sk_buff *skb;

- skb = dev_alloc_skb(pkt_size + NET_IP_ALIGN);
+ skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
if (skb) {
skb_reserve(skb, NET_IP_ALIGN);
eth_copy_and_sum(skb, sk_buff[0]->data, pkt_size, 0);
@@ -2452,7 +2456,7 @@ rtl8169_rx_interrupt(struct net_device *
le64_to_cpu(desc->addr), tp->rx_buf_sz,
PCI_DMA_FROMDEVICE);

- if (rtl8169_try_rx_copy(&skb, pkt_size, desc,
+ if (rtl8169_try_rx_copy(dev, &skb, pkt_size, desc,
tp->rx_buf_sz)) {
pci_action = pci_unmap_single;
tp->Rx_skbuff[entry] = NULL;
-
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