On 05/05/13 16:59, Juliusz Chroboczek wrote:
Robert bradley has been working on making atomic route updates work
and possibly better route cache flushing.
[...]
get the patchset from: git://github.com/rb12345/babeld.git
While it hasn't rained yet, I've looked at the code.
1. The commit "Atomic route modification in kernel_netlink" contains
both the atomic route modification code and code for flushing the
routing cache. I'd like the two to be separated. (I can do that if
you want, Robert, and leave your name as the original author of the
commit.)
Yes, that's fine. I think that the cache-flushing part may not be
needed anyway.
4. Is the cache flushing still needed with Baptiste's patch? I'd
rather not be tweaking /proc files at runtime.
-- Juliusz
I think the cache flushing is a misunderstanding on my part. I added
the cache flushing since http://linux-ip.net/html/linux-ip.html and
http://lartc.org/howto/lartc.rpdb.html appeared to imply it might be
needed after local route updates. Looking at the iproute2 manpages
closely though, it appears that it is only needed if source-policy rules
("ip rule" equivalents) are involved. Without source-policy rules,
cache flushing looks to be completely unnecessary.
The only interaction between this and Baptiste's patch is that the
emptier caches mean it has fewer routes to filter out.
--
Robert Bradley
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