Jeff Garzik <jgarzik@pobox.com> writes:

> Stephen Hemminger wrote:
> > Here is the 8139too version in net-drivers-2.5-exp modified for NAPI.
> > Also:
> > 	64k receive ring - has to handle wrap for that case;
> > 	   the NoWrap flag does nothing if using this big ring.
> > 	assert() -> BUG_ON()
> >
> > To deal with the races with tx_timeout, put back in the rx_lock from earlier versions.

> +		local_irq_disable();
> +		netif_rx_complete(dev);
> +		RTL_W16_F(IntrMask, rtl8139_intr_mask);
> +		local_irq_enable();

Probably, by my mistake in previous mail. Sorry.  This still has the
races condition. It can trigger the same problem by shared interrupt
on SMP.

Probably the following ISR style should use the below combination.

   in ISR
	if (netif_rx_schedule_prep(dev)) {
		RTL_W16 (IntrMask, rtl8139_norx_intr_mask);
		__netif_rx_schedule(dev);
	}

   in ->poll
	local_irq_disable();
	RTL_W16_F(IntrMask, rtl8139_intr_mask);
	__netif_rx_complete(dev);
	local_irq_enable();


And another one should use the below combination.  (this style can
change the flags of __LINK_STATE_RX_SCHED or __LINK_STATE_START anytime)

   in ISR
	if (status & RxAckBits) {
		RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
		netif_rx_schedule (dev);
	}

   in ->poll
	local_irq_disable();
	__netif_rx_complete(dev);
	RTL_W16_F(IntrMask, rtl8139_intr_mask);
	local_irq_enable();

   If happen the shared interrupt, the this ISR style may lose a
   chance of netif_rx_schedule().


Anyway, the following patch should fix the problem. Please apply.

Thanks.
--
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

 drivers/net/8139too.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

For net-drivers-2.5-exp, add a poll_controller hook to allow use of netconsole
with this driver.

jeff, don't have netconsole setup to test this so please give it a try before
including it.

For net-drivers-2.5-exp:  Make the receive window configurable and go
back to the original 32K by default.

For net-drivers-2.5-exp:
Minimize code changes -- put back assert() macro with similar properties
to the original.  Added unlikely() and KERN_ERR tag.

Here is the 8139too version in net-drivers-2.5-exp modified for NAPI.
Also:
	64k receive ring - has to handle wrap for that case;
	   the NoWrap flag does nothing if using this big ring.
	assert() -> BUG_ON()

To deal with the races with tx_timeout, put back in the rx_lock from earlier versions.

All sections of the document are woefully outdated.

into home.osdl.org:/home/torvalds/v2.5/linux

Spotted by Matteo Croce 

into home.osdl.org:/home/torvalds/v2.5/linux

From Martin Diehl.

From Martin Diehl.

Also, make sir-dev locking compatible with irport.
From Martin Diehl.

[ATM]: br2684 incorrectly handles frames recvd with FCS (by Alex Zeffertt <ajz@cambridgebroadband.com>)