Hi All,
We have discovered that ipfw(4) shows very low performance results with
our rules. One of the biggest problems is rules with O_IP6_XXX_ME
opcode. They checks match or not match packet's addresses with locally
configured IPv6 addresses.
For IPv4 we have an in_ifaddr hash for the quick search an address, but
not for the IPv6. So, I have implemented the first patch based on the
code for the IPv4, but there are several questions I want to discuss.
The patch is here:
http://people.freebsd.org/~ae/in6_ifaddrhash.diff
1. The hash size. I made it the same what IPv4 has. But I think 512
buckets is too many.
2. What hash function is better to use?
3. Using the whole 128 bit of address to hash seems like overkill.
--
WBR, Andrey V. Elsukov
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