Ah, indeed. Only the 1GB controllers l1c, l1d, l1d_2 support jumbos. Sorry I
didn't pay attention to that.
drivers/net/ethernet/atheros/atl1c/atl1c_main.c:534
/* Fast Ethernet controller doesn't support jumbo packet */
That's good news in fact because it means that it's always possible to
allocate buffers so that they don't straddle a page boundary for this
hardware.
The "theory" remains speculative however. Could you please run one more test?
Install the kmp at
http://download.opensuse.org/repositories/home:/benjamin_poirier:/branches:/home:/david_chang:/bnc812116_atl1c/openSUSE_12.3/
modinfo atl1c should report
srcversion: 09F7FD879EA87758649C33B
Then run as root:
cat /sys/kernel/debug/tracing/trace_pipe > /tmp/output1
The command will continue to run.
Use the adapter as you normally do to reproduce the bug. When that has
happened, please check (in another terminal) that
cat /sys/kernel/debug/tracing/tracing_on
contains "0".
Then kill the first cat trace_pipe command and attach the resulting
file /tmp/output1 to the bug.
If you can repeat this 2-3 times in different output files it'll be even
better!
Thanks.
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https://bugs.launchpad.net/bugs/1175091
Title:
Cable Ethernet conn. "die" with Atheros Network Card in Ubuntu 13.04
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