On Monday 30 May 2005 07:27 pm, James Harr wrote:

Hi,
The driver you sent gives me an error when I try to compile and load it
with 2.6.11.11:

# make
[...]
  CC [M]  drivers/net/r8169.o
  drivers/net/r8169.c: In function `rtl8169_down':
  drivers/net/r8169.c:2589: warning: implicit declaration of function
  synchronize_sched
[...]

# insmod drivers/net/r8169.ko
insmod: error inserting 'drivers/net/r8169.ko': -1 Unknown symbol in module


It does a similar thing when I try to install it:

# make modules_install
[...]
if [ -r System.map ]; then /sbin/depmod -ae -F System.map  2.6.11.11; fi
WARNING: /lib/modules/2.6.11.11/kernel/drivers/net/r8169.ko needs unknown
symbol synchronize_sched

As I noted in a previous email, it doesn't give me this problem when I have
jumbo frames enabled on my switch.

Since I found out my switch supported jumbo frames, I started to toy around
with larger MTUs. When a VLAN's MTU was set to 7200, my system locked up. I
didn't have this problem at 7196. Also, the crash problem wasn't there on a
regular interface with no VLANs and the MTU at 7200.

I wonder if this is related to the adapter breaking large frames into multiple 
descriptors.  On normal (non-VLAN) frames, this happens at MTU 8169.  I 
wonder if enabling VLAN and jumbo frames (a combination I never tried) brings 
down the threshold to MTU 7200.  

Thanks,
Jon