On 23 Aug 2018, at 16:54, Bjoern A. Zeeb wrote:
Author: bz
Date: Thu Aug 23 16:54:22 2018
New Revision: 338257
URL: https://svnweb.freebsd.org/changeset/base/338257
Log:
MFp4 bz_ipv6_fast:
Migrate udp6_send() v4mapped code to udp6_output() saving us a
re-lock and
further simplifying the address-family handling code by eliminating
AF_INET checks and almost all v4mapped handling right after the
start
as cases could actually not happen anymore.
Rework output path locking similar to UDP4 allowing for better
parallelism (see r222488, and later versions).
Sponsored by: The FreeBSD Foundation (2012)
Sponsored by: iXsystems (2012)
Differential Revision: https://reviews.freebsd.org/D3721
Modified:
head/sys/netinet6/udp6_usrreq.c
Yes, this was from a perforce branch (originally) but people might
remember seeing it on net@. Not that anyone but me really cared so far.
In case you wonder what the difference once was, there was a local
benchmark case here showing the difference:
https://people.freebsd.org/~bz/bench/20120408-diff_pps-pps.html (there
are some more on those pages or in my old BSDCan presentation).
This latest update also includes the epoch(9) changes and should finally
get UDP6 on par with UDP4 and has addressed all but one comment from the
old review.
Happy UDP-encaping or QUICing or ..
/bz
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