RE: [ECOS] Problems receiving packets on i82559

["Nikhil R." <nikhil_r at mindtree dot com>]

Hi Andrew,

Thanx for ur help. to answer some of ur questions.....

We have checked the MAC address. It is the same as the MAC address we get
when using Redboot. It is printing the MAC address correctly.

We r able to send packets out without calling init_all_network_interfaces.
But the problem is with receiving. The other thing is we dont want the
application to make a call to init_all_network_interfaces or any other
similar function. Is it possible to have the interface up continously so tht
we dont need to call any function as part of the application?

We called eth_drv_start at the end of our initialization procedure. As a
result of this we received some interrupts but this again stopped after
sometime.

Our hardware platform is an i386 pc with an i82559 card.

Nikhil

-----Original Message-----
From: Andrew Lunn [mailto:andrew dot lunn at ascom dot ch]
Sent: Tuesday, March 11, 2003 3:56 PM
To: Nikhil R.
Cc: Andrew Lunn; ecos-discuss at sources dot redhat dot com
Subject: Re: [ECOS] Problems receiving packets on i82559


On Tue, Mar 11, 2003 at 03:38:38PM +0530, Nikhil R. wrote:
> Hi Andrew,
> 
> As per ur earlier mail we noticed that we were receiving interrupts only
> during the send process. So we called eth_drv_start at the beginning of our
> initialization procedure and this made us receive some interrupts but
stopped
> again after sometime.
> 
> If we look at the BSD code, all the applications call the function
> init_all_network_interfaces. Without calling this function  it seems like
> even the BSD code does not receive any interrupts.


If you don't call init_all_network_interfaces, the interface will be
down. You cannot send/receive IP packets with the interface down
etc. This is explained in the documentation about the network stacks.

Debug the system using one of the standard test programs, eg
ping_test.c. That way you know at least the test code works correctly.

Gary suggested that the MAC address could be wrong. Have you
investigated this? Have you enabled the debug code in the i82559
driver so it prints out the MAC address etc. Is it valid? 

I suggested you check the IRQ number being registered. Have you done
this? Is it correct for your hardware?

What is you hardware platform anyway?

     Andrew


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