Comments (5)
dtaht
commented on June 29, 2024
kernel rbtree is "augmented". Looks useful. It's GPL.
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dtaht
commented on June 29, 2024
this where resend goes nuts > 5k routes and desperately needs to not be a singly linked list. 36 byte compare too....
https://github.com/dtaht/babeld/blob/master/resend.c#L67
and the whole congestion control #11 and other issues #26 #20 with doing too much busty work would be better handled with a timer wheel.
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dtaht
commented on June 29, 2024
https://lkml.org/lkml/2005/10/19/46 was good
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dtaht
commented on June 29, 2024
I was not particularly happy with the overhead of an rbtree in these cases. So, reaching
back into prehistory, I went looking at various tries.
"Hardware/Software IP Lookups with Incremental Updates" was good reading:
http://cseweb.ucsd.edu/~varghese/PAPERS/ccr2004.pdf
with some example code here: https://github.com/xnhp0320/prefix_lookup_mc
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dtaht
commented on June 29, 2024
The uthash version seems performant.
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Related Issues (20)
- route filter issues HOT 1
- Make the in filter run early
- Make dnsmasq filter out babeld events early
- Make network manager filter out babeld routes early
- zeroes
- route interval is independent of other intervals in the protocol but not the code
- route folding
- using sse intrinsics is too hard
- atomic updates needed HOT 6
- keep routes around
- route retractions could be more atomic
- Don't accumulate too much work - late hellos
- babel vs dhcp-pd is still a mess openwrt
- ENOBUFS
- popcount HOT 1
- sanely shedding load
- redistribute local deny not working HOT 2
- uthash version looks good
- brute force portion of the merge problems
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