Date: Tue, 5 Apr 2011 03:26:07 +0200 (CEST) From: Ingo Flaschberger <if@freebsd.org> To: freebsd-net@freebsd.org Subject: Routing enhancement - reduce routing table locking Message-ID: <alpine.LRH.2.00.1104050303140.2152@filebunker.xip.at>
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--168430090-939355638-1301965804=:2152
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Hi,
I have written a patch to:
*) reduce locking of routing table to achieve the same speed as with
flowtables, which do not scale with many routes:
use of a copy of the route
use rm_lock(9)
(idea of Andre Oppermann)
*) implement some multipath changes to use a direct attached
interface route and a real route, used some OpenBSD code
*) icmp rate-limiting in forwarding (old code from FreeBSD page)
The patch applies at FreeBSD 8.2 stable.
Comments are welcome, especially if I can reuse "dst" (which seems to
work):
rtl.rt_gateway = (struct sockaddr *)dst;
but 'm not shure if I should take same caution with bcopy regarding
sa_len:
rtlookup_fib(struct sockaddr *dst, u_int fibnum, struct rtlookup *rtl,
Kind regards,
Ingo Flaschberger
Geschaeftsleitung
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