Hi all,
I use a Fedora flavour kernel.
I have a specific notebook that needs a patch.
One of the kernel developpers has sent me a patch for the kernel that
could suit me.
I tried to modify the patch to suit the Fedora src.rpm stuff.
But I still have some problems: all the patch is rejected.
I guess it's a directory-<kernel-version> problem that hides to me...
I'm not a very good developper and I dont really play with patches so
that I need some external help from you to apply it.
I use the 1450FC4 kernel from the testing updates.
I join you the original patch.
Please help me :-)
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Disable 8139too NAPI for testing the Leval-Edge trigger problem
Signed-off-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
---
drivers/net/8139too.c | 37 ++++++++++++++++++++++++++++++-------
1 files changed, 30 insertions(+), 7 deletions(-)
diff -puN drivers/net/8139too.c~8139too-napi-revert drivers/net/8139too.c
--- linux-2.6.13-rc6/drivers/net/8139too.c~8139too-napi-revert 2005-08-16 03:42:13.000000000 +0900
+++ linux-2.6.13-rc6-hirofumi/drivers/net/8139too.c 2005-08-16 03:52:15.000000000 +0900
@@ -112,7 +112,7 @@
#include <asm/uaccess.h>
#include <asm/irq.h>
-#define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
+#define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver (Disable NAPI) " DRV_VERSION
#define PFX DRV_NAME ": "
/* Default Message level */
@@ -120,6 +120,7 @@
NETIF_MSG_PROBE | \
NETIF_MSG_LINK)
+//#define ENABLE_NAPI
/* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */
#ifdef CONFIG_8139TOO_PIO
@@ -624,7 +625,9 @@ static void rtl8139_tx_timeout (struct n
static void rtl8139_init_ring (struct net_device *dev);
static int rtl8139_start_xmit (struct sk_buff *skb,
struct net_device *dev);
+#ifdef ENABLE_NAPI
static int rtl8139_poll(struct net_device *dev, int *budget);
+#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
static void rtl8139_poll_controller(struct net_device *dev);
#endif
@@ -974,8 +977,10 @@ static int __devinit rtl8139_init_one (s
/* The Rtl8139-specific entries in the device structure. */
dev->open = rtl8139_open;
dev->hard_start_xmit = rtl8139_start_xmit;
+#ifdef ENABLE_NAPI
dev->poll = rtl8139_poll;
dev->weight = 64;
+#endif
dev->stop = rtl8139_close;
dev->get_stats = rtl8139_get_stats;
dev->set_multicast_list = rtl8139_set_rx_mode;
@@ -2024,8 +2029,11 @@ no_early_rx:
dev->last_rx = jiffies;
tp->stats.rx_bytes += pkt_size;
tp->stats.rx_packets++;
-
+#ifdef ENABLE_NAPI
netif_receive_skb (skb);
+#else
+ netif_rx (skb);
+#endif
} else {
if (net_ratelimit())
printk (KERN_WARNING
@@ -2103,7 +2111,7 @@ static void rtl8139_weird_interrupt (str
dev->name, pci_cmd_status);
}
}
-
+#ifdef ENABLE_NAPI
static int rtl8139_poll(struct net_device *dev, int *budget)
{
struct rtl8139_private *tp = netdev_priv(dev);
@@ -2137,7 +2145,7 @@ static int rtl8139_poll(struct net_devic
return !done;
}
-
+#endif /* !ENABLE_NAPI */
/* The interrupt handler does all of the Rx thread work and cleans up
after the Tx thread. */
static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
@@ -2149,8 +2157,14 @@ static irqreturn_t rtl8139_interrupt (in
u16 status, ackstat;
int link_changed = 0; /* avoid bogus "uninit" warning */
int handled = 0;
+#ifndef ENABLE_NAPI
+ int boguscnt = 20;
+#endif
spin_lock (&tp->lock);
+#ifndef ENABLE_NAPI
+retry:
+#endif
status = RTL_R16 (IntrStatus);
/* shared irq? */
@@ -2162,13 +2176,13 @@ static irqreturn_t rtl8139_interrupt (in
/* h/w no longer present (hotplug?) or major error, bail */
if (unlikely(status == 0xFFFF))
goto out;
-
+#ifdef ENABLE_NAPI
/* close possible race's with dev_close */
if (unlikely(!netif_running(dev))) {
RTL_W16 (IntrMask, 0);
goto out;
}
-
+#endif
/* Acknowledge all of the current interrupt sources ASAP, but
an first get an additional status bit from CSCR. */
if (unlikely(status & RxUnderrun))
@@ -2178,6 +2192,7 @@ static irqreturn_t rtl8139_interrupt (in
if (ackstat)
RTL_W16 (IntrStatus, ackstat);
+#ifdef ENABLE_NAPI
/* Receive packets are processed by poll routine.
If not running start it now. */
if (status & RxAckBits){
@@ -2186,7 +2201,10 @@ static irqreturn_t rtl8139_interrupt (in
__netif_rx_schedule (dev);
}
}
-
+#else
+ if (netif_running(dev) && (status & RxAckBits))
+ rtl8139_rx (dev, tp, INT_MAX);
+#endif
/* Check uncommon events with one test. */
if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
rtl8139_weird_interrupt (dev, tp, ioaddr,
@@ -2197,6 +2215,11 @@ static irqreturn_t rtl8139_interrupt (in
if (status & TxErr)
RTL_W16 (IntrStatus, TxErr);
}
+#ifndef ENABLE_NAPI
+ boguscnt--;
+ if (boguscnt > 0)
+ goto retry;
+#endif
out:
spin_unlock (&tp->lock);
_
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