Hiya,
I'm trying to setup a bridging between ethernet and TAP interfaces
(the tap being on one end of a tunnel) --- on a sparc64 machine.
I have it *almost* working, the almost being a kernel panic when
the bridge finally goes into forwarding mode.
The machine is running Debian linux (testing, more or less), with
a 2.4.20 kernel. This kernel already has all of the "submitted"
patches from the patchtracker page applied. I applied the first
part of the "2.4_fix_sparc64_bridging.diff" patch --- the second
part (ioctl32.c) seems to be obsoleted by changes to that file.
I also had to patch bridge-utils a little --- in br_device_ioctl64(),
args is turned into an 'unsigned long long'. Due to the changes in
the kernel, this should just be 'unsigned long'. (Better explanation
later...)
Anyhow, after that patch, I am able to create bridges, show them,
add interfaces, etc.
I can create a bridge with two TAP ports (created by two localhost
vtun tunnels - just for testing) without any problems. (However,
I haven't tried pushing any packets through them.)
I can create a bridge with eth0 as the only port, no problem.
However, when I have a bridge with both eth0 and a TAP port, I get a panic.
It doesn't matter if I add both ports, then bring up the bridge; or if I
add the TAP port to an already-up eth0-only bridge. After that port
transitions into 'forwarding' mode, the kernel sticks its tongue out
at me:
swapper(0): Kernel bad sw trap 5
Any clues, any suggestions?
(I haven't tried addif'ing eth0 to a bridge only containing tap0 yet.
Also, I haven't tried a kernel without "2.4_fix_sparc64_bridging.diff";
perhaps it is unnecessary anymore.)
--
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Matt Marjanovic | The Cog Shop | MIT AI Lab | MIT | Cambridge | MA | USA
mailto:[EMAIL PROTECTED] | http://www.ai.mit.edu/projects/cog
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