IGB driver not getting Rx interrupt

Adam Lackorzynski adam at os.inf.tu-dresden.de
Sun Apr 22 16:10:36 CEST 2012


On Tue Apr 10, 2012 at 16:21:49 -0700, Shashi Sharma wrote:
> I ported igb-1.2.45-k2 driver to ankh. Ankh is able to initialize the
> Ethernet device using this driver. 
> I am testing this with lwip_test example. Using this driver Ankh is able
> to send out "DHCP Discover" packet and the Gateway/Router sends back an
> "DHCP Offer" packet. 
> But the hardware never generates an Rx interrupt in the driver. How can
> I debug/solve this problem?
> Attached is the log with a lot of debugging turned on, and also debug
> messages added in the driver itself.

You could check whether the hardware IRQ is properly connected to the
driver in the jdb, check the shift-Q list, search for the IRQ number and
see whether it is connected to the proper thread.

Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/

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