From: Francois Romieu <romieu@fr.zoreil.com>
Large Send enablement.
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/drivers/net/r8169.c | 80 ++++++++++++++++++++++++++++++++++++--------
1 files changed, 67 insertions(+), 13 deletions(-)
diff -puN drivers/net/r8169.c~r8169-large-send-enablement drivers/net/r8169.c
--- 25/drivers/net/r8169.c~r8169-large-send-enablement 2004-12-06 17:38:16.829846712 -0800
+++ 25-akpm/drivers/net/r8169.c 2004-12-06 17:38:16.836845648 -0800
@@ -112,7 +112,7 @@ static int multicast_filter_limit = 32;
#define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
#define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
#define EarlyTxThld 0x3F /* 0x3F means NO early transmit */
-#define RxPacketMaxSize 0x0800 /* Maximum size supported is 16K-1 */
+#define RxPacketMaxSize 0x3FE8 /* 16K - 1 - ETH_HLEN - VLAN - CRC */
#define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */
#define R8169_REGS_SIZE 256
@@ -427,6 +427,9 @@ static void rtl8169_tx_timeout(struct ne
static struct net_device_stats *rtl8169_get_stats(struct net_device *netdev);
static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
void __iomem *);
+static int rtl8169_change_mtu(struct net_device *netdev, int new_mtu);
+static void rtl8169_down(struct net_device *dev);
+
#ifdef CONFIG_R8169_NAPI
static int rtl8169_poll(struct net_device *dev, int *budget);
#endif
@@ -1238,8 +1241,6 @@ rtl8169_init_board(struct pci_dev *pdev,
}
tp->chipset = i;
- tp->rx_buf_sz = RX_BUF_SIZE;
-
*ioaddr_out = ioaddr;
*dev_out = dev;
out:
@@ -1321,6 +1322,7 @@ rtl8169_init_one(struct pci_dev *pdev, c
dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
dev->irq = pdev->irq;
dev->base_addr = (unsigned long) ioaddr;
+ dev->change_mtu = rtl8169_change_mtu;
#ifdef CONFIG_R8169_NAPI
dev->poll = rtl8169_poll;
@@ -1449,13 +1451,22 @@ static int rtl8169_resume(struct pci_dev
#endif /* CONFIG_PM */
-static int
-rtl8169_open(struct net_device *dev)
+static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
+ struct net_device *dev)
+{
+ unsigned int mtu = dev->mtu;
+
+ tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
+}
+
+static int rtl8169_open(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
struct pci_dev *pdev = tp->pci_dev;
int retval;
+ rtl8169_set_rxbufsize(tp, dev);
+
retval =
request_irq(dev->irq, rtl8169_interrupt, SA_SHIRQ, dev->name, dev);
if (retval < 0)
@@ -1535,8 +1546,8 @@ rtl8169_hw_start(struct net_device *dev)
RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
RTL_W8(EarlyTxThres, EarlyTxThld);
- // For gigabit rtl8169
- RTL_W16(RxMaxSize, RxPacketMaxSize);
+ // For gigabit rtl8169, MTU + header + CRC + VLAN
+ RTL_W16(RxMaxSize, tp->rx_buf_sz);
// Set Rx Config register
i = rtl8169_rx_config |
@@ -1577,6 +1588,37 @@ rtl8169_hw_start(struct net_device *dev)
netif_start_queue(dev);
}
+static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct rtl8169_private *tp = netdev_priv(dev);
+ int ret = 0;
+
+ if (new_mtu < ETH_ZLEN || new_mtu > RxPacketMaxSize)
+ return -EINVAL;
+
+ dev->mtu = new_mtu;
+
+ if (!netif_running(dev))
+ goto out;
+
+ rtl8169_down(dev);
+
+ rtl8169_set_rxbufsize(tp, dev);
+
+ ret = rtl8169_init_ring(dev);
+ if (ret < 0)
+ goto out;
+
+ rtl8169_hw_start(dev);
+
+ netif_poll_enable(dev);
+
+ rtl8169_request_timer(dev);
+
+out:
+ return ret;
+}
+
static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
{
desc->addr = 0x0badbadbadbadbadull;
@@ -2265,19 +2307,17 @@ static int rtl8169_poll(struct net_devic
}
#endif
-static int
-rtl8169_close(struct net_device *dev)
+static void rtl8169_down(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
- struct pci_dev *pdev = tp->pci_dev;
void __iomem *ioaddr = tp->mmio_addr;
+ rtl8169_delete_timer(dev);
+
netif_stop_queue(dev);
flush_scheduled_work();
- rtl8169_delete_timer(dev);
-
spin_lock_irq(&tp->lock);
/* Stop the chip's Tx and Rx DMA processes. */
@@ -2292,13 +2332,27 @@ rtl8169_close(struct net_device *dev)
spin_unlock_irq(&tp->lock);
- free_irq(dev->irq, dev);
+ synchronize_irq(dev->irq);
netif_poll_disable(dev);
+ /* Give a racing hard_start_xmit a few cycles to complete. */
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+
rtl8169_tx_clear(tp);
rtl8169_rx_clear(tp);
+}
+
+static int rtl8169_close(struct net_device *dev)
+{
+ struct rtl8169_private *tp = netdev_priv(dev);
+ struct pci_dev *pdev = tp->pci_dev;
+
+ rtl8169_down(dev);
+
+ free_irq(dev->irq, dev);
pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
tp->RxPhyAddr);
_