mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-25 02:48:37 +02:00
improve the stability of via-rhine with large packet sizes and high network load
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@5707 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
7bc91f44e5
commit
f37257b768
@ -1,6 +1,6 @@
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diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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--- linux.old/drivers/net/via-rhine.c 2006-06-08 20:21:20.000000000 +0200
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+++ linux.dev/drivers/net/via-rhine.c 2006-06-08 20:19:40.000000000 +0200
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diff -ur linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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--- linux.old/drivers/net/via-rhine.c 2006-12-07 05:53:39.000000000 +0100
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+++ linux.dev/drivers/net/via-rhine.c 2006-12-07 07:06:52.000000000 +0100
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@@ -131,6 +131,10 @@
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- Fix Tx engine race for good
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- Craig Brind: Zero padded aligned buffers for short packets.
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@ -27,9 +27,9 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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-#define TX_RING_SIZE 16
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-#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */
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-#define RX_RING_SIZE 16
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+#define TX_RING_SIZE 128
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+#define TX_QUEUE_LEN 120 /* Limit ring entries actually used. */
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+#define RX_RING_SIZE 128
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+#define TX_RING_SIZE 64
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+#define TX_QUEUE_LEN 60 /* Limit ring entries actually used. */
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+#define RX_RING_SIZE 64
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/* Operational parameters that usually are not changed. */
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@ -61,8 +61,8 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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/* The addresses of receive-in-place skbuffs. */
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struct sk_buff *rx_skbuff[RX_RING_SIZE];
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@@ -504,9 +508,10 @@
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static void rhine_check_media_task(struct net_device *dev);
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@@ -500,9 +504,10 @@
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static void rhine_tx_timeout(struct net_device *dev);
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static int rhine_start_tx(struct sk_buff *skb, struct net_device *dev);
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static irqreturn_t rhine_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
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-static void rhine_tx(struct net_device *dev);
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@ -70,21 +70,20 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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-static void rhine_error(struct net_device *dev, int intr_status);
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+static int rhine_poll(struct net_device *dev, int *budget);
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+static int rhine_tx(struct net_device *dev);
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+static int rhine_rx(struct net_device *dev);
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+static int rhine_rx(struct net_device *dev, int max_work);
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+static void rhine_error(struct net_device *dev);
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static void rhine_set_rx_mode(struct net_device *dev);
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static struct net_device_stats *rhine_get_stats(struct net_device *dev);
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static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
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@@ -601,6 +606,8 @@
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@@ -597,6 +602,7 @@
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struct rhine_private *rp = netdev_priv(dev);
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void __iomem *ioaddr = rp->base;
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+ pci_enable_device(rp->pdev);
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+
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iowrite8(Cmd1Reset, ioaddr + ChipCmd1);
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IOSYNC;
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@@ -622,6 +629,28 @@
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@@ -618,6 +624,28 @@
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"failed" : "succeeded");
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}
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@ -113,7 +112,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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#ifdef USE_MMIO
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static void enable_mmio(long pioaddr, u32 quirks)
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{
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@@ -664,14 +693,26 @@
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@@ -660,14 +688,26 @@
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}
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@ -127,7 +126,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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+ unsigned int work_done, work_to_do = min(*budget, dev->quota);
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+ struct rhine_private *rp = netdev_priv(dev);
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+
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+ work_done = rhine_rx(dev);
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+ work_done = rhine_rx(dev, (*budget < dev->quota ? *budget : dev->quota));
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+
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+ if (rp->istat & (IntrTxErrSummary | IntrTxDone))
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+ rhine_tx(dev);
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@ -146,7 +145,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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static void rhine_hw_init(struct net_device *dev, long pioaddr)
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{
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@@ -850,11 +891,10 @@
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@@ -846,11 +886,10 @@
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dev->ethtool_ops = &netdev_ethtool_ops;
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dev->tx_timeout = rhine_tx_timeout;
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dev->watchdog_timeo = TX_TIMEOUT;
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@ -160,9 +159,9 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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+
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+ dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
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INIT_WORK(&rp->tx_timeout_task,
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(void (*)(void *))rhine_tx_timeout_task, dev);
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@@ -904,6 +944,10 @@
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/* dev->name not defined before register_netdev()! */
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rc = register_netdev(dev);
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@@ -894,6 +933,10 @@
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}
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}
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rp->mii_if.phy_id = phy_id;
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@ -173,7 +172,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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return 0;
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@@ -995,7 +1039,7 @@
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@@ -985,7 +1028,7 @@
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/* Fill in the Rx buffers. Handle allocation failure gracefully. */
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for (i = 0; i < RX_RING_SIZE; i++) {
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@ -182,7 +181,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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rp->rx_skbuff[i] = skb;
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if (skb == NULL)
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break;
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@@ -1115,11 +1159,7 @@
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@@ -1120,11 +1163,7 @@
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rhine_set_rx_mode(dev);
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/* Enable interrupts by setting the interrupt mask. */
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@ -195,7 +194,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8),
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ioaddr + ChipCmd);
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@@ -1230,6 +1270,7 @@
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@@ -1235,6 +1274,7 @@
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mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
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netif_start_queue(dev);
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@ -203,7 +202,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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return 0;
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}
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@@ -1268,8 +1309,8 @@
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@@ -1263,8 +1303,8 @@
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/* Reinitialize the hardware. */
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rhine_chip_reset(dev);
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init_registers(dev);
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@ -213,7 +212,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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enable_irq(rp->pdev->irq);
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dev->trans_start = jiffies;
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@@ -1363,69 +1404,56 @@
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@@ -1358,77 +1398,66 @@
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struct net_device *dev = dev_instance;
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struct rhine_private *rp = netdev_priv(dev);
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void __iomem *ioaddr = rp->base;
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@ -293,8 +292,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE;
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+ void __iomem *ioaddr = rp->base;
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+ int done = 0;
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- spin_lock(&rp->lock);
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+
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+ /* Avoid scavenging before Tx engine turned off */
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+ RHINE_WAIT_FOR(!(ioread8(ioaddr+ChipCmd) & CmdTxOn));
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+ if (debug > 2 &&
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@ -303,12 +301,32 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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+ "rhine_interrupt() Tx engine"
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+ "still on.\n", dev->name);
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+
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+ spin_lock_irq(&rp->lock);
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- spin_lock(&rp->lock);
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/* find and cleanup dirty tx descriptors */
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while (rp->dirty_tx != rp->cur_tx) {
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+ spin_lock(&rp->lock);
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txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status);
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@@ -1462,6 +1490,7 @@
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if (debug > 6)
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printk(KERN_DEBUG "Tx scavenge %d status %8.8x.\n",
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entry, txstatus);
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- if (txstatus & DescOwn)
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+ if (txstatus & DescOwn) {
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+ spin_unlock(&rp->lock);
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break;
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+ }
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if (txstatus & 0x8000) {
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if (debug > 1)
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printk(KERN_DEBUG "%s: Transmit error, "
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@@ -1443,6 +1472,7 @@
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(txstatus & 0x0800) || (txstatus & 0x1000)) {
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rp->stats.tx_fifo_errors++;
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rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn);
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+ spin_unlock(&rp->lock);
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break; /* Keep the skb - we try again */
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}
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/* Transmitter restarted in 'abnormal' handler. */
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@@ -1457,6 +1487,7 @@
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txstatus & 0xF);
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rp->stats.tx_bytes += rp->tx_skbuff[entry]->len;
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rp->stats.tx_packets++;
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@ -316,7 +334,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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}
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/* Free the original skb. */
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if (rp->tx_skbuff_dma[entry]) {
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@@ -1470,23 +1499,25 @@
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@@ -1465,23 +1496,25 @@
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rp->tx_skbuff[entry]->len,
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PCI_DMA_TODEVICE);
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}
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@ -324,8 +342,8 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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+ dev_kfree_skb_any(rp->tx_skbuff[entry]);
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rp->tx_skbuff[entry] = NULL;
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entry = (++rp->dirty_tx) % TX_RING_SIZE;
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+ spin_unlock(&rp->lock);
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}
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+ spin_unlock_irq(&rp->lock);
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+
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if ((rp->cur_tx - rp->dirty_tx) < TX_QUEUE_LEN - 4)
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netif_wake_queue(dev);
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@ -337,7 +355,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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/* This routine is logically part of the interrupt handler, but isolated
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for clarity and better register allocation. */
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-static void rhine_rx(struct net_device *dev)
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+static int rhine_rx(struct net_device *dev)
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+static int rhine_rx(struct net_device *dev, int max_work)
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{
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struct rhine_private *rp = netdev_priv(dev);
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int entry = rp->cur_rx % RX_RING_SIZE;
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@ -346,16 +364,16 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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if (debug > 4) {
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printk(KERN_DEBUG "%s: rhine_rx(), entry %d status %8.8x.\n",
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@@ -1503,8 +1534,6 @@
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@@ -1498,7 +1531,7 @@
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if (debug > 4)
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printk(KERN_DEBUG "rhine_rx() status is %8.8x.\n",
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desc_status);
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- if (--boguscnt < 0)
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- break;
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+ if (--max_work < 0)
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break;
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if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) {
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if ((desc_status & RxWholePkt) != RxWholePkt) {
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printk(KERN_WARNING "%s: Oversized Ethernet "
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@@ -1528,9 +1557,7 @@
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@@ -1523,9 +1556,7 @@
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if (desc_status & 0x0004) rp->stats.rx_frame_errors++;
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if (desc_status & 0x0002) {
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/* this can also be updated outside the interrupt handler */
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@ -365,7 +383,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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}
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}
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} else {
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@@ -1558,6 +1585,7 @@
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@@ -1553,6 +1584,7 @@
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rp->rx_buf_sz,
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PCI_DMA_FROMDEVICE);
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} else {
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@ -373,7 +391,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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skb = rp->rx_skbuff[entry];
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if (skb == NULL) {
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printk(KERN_ERR "%s: Inconsistent Rx "
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@@ -1566,6 +1594,14 @@
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@@ -1561,6 +1593,14 @@
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break;
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}
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rp->rx_skbuff[entry] = NULL;
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@ -388,7 +406,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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skb_put(skb, pkt_len);
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pci_unmap_single(rp->pdev,
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rp->rx_skbuff_dma[entry],
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@@ -1573,10 +1609,11 @@
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@@ -1568,10 +1608,11 @@
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PCI_DMA_FROMDEVICE);
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}
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skb->protocol = eth_type_trans(skb, dev);
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@ -401,7 +419,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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}
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entry = (++rp->cur_rx) % RX_RING_SIZE;
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rp->rx_head_desc = &rp->rx_ring[entry];
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@@ -1587,7 +1624,7 @@
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@@ -1582,7 +1623,7 @@
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struct sk_buff *skb;
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entry = rp->dirty_rx % RX_RING_SIZE;
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if (rp->rx_skbuff[entry] == NULL) {
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@ -410,7 +428,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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rp->rx_skbuff[entry] = skb;
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if (skb == NULL)
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break; /* Better luck next round. */
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@@ -1600,6 +1637,8 @@
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@@ -1595,6 +1636,8 @@
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}
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rp->rx_ring[entry].rx_status = cpu_to_le32(DescOwn);
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}
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@ -419,7 +437,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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}
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/*
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@@ -1649,11 +1688,11 @@
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@@ -1644,11 +1687,11 @@
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}
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@ -433,7 +451,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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spin_lock(&rp->lock);
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if (intr_status & IntrLinkChange)
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@@ -1898,6 +1937,7 @@
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@@ -1895,6 +1938,7 @@
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/* Disable interrupts by clearing the interrupt mask. */
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iowrite16(0x0000, ioaddr + IntrEnable);
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@ -441,7 +459,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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/* Stop the chip's Tx and Rx processes. */
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iowrite16(CmdStop, ioaddr + ChipCmd);
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@@ -1912,6 +1952,9 @@
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@@ -1906,6 +1950,9 @@
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free_tbufs(dev);
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free_ring(dev);
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@ -451,7 +469,7 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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return 0;
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}
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@@ -1941,6 +1984,7 @@
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@@ -1935,6 +1982,7 @@
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return; /* Nothing to do for non-WOL adapters */
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rhine_power_init(dev);
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@ -459,3 +477,4 @@ diff -urN linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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/* Make sure we use pattern 0, 1 and not 4, 5 */
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if (rp->quirks & rq6patterns)
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Only in linux.dev/drivers/net: .via-rhine.c.swp
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