Commit 8fe680a3 authored by Kirk Webb's avatar Kirk Webb
Browse files

Added entries describing Linux Linkdelays additions to the Changelog.

parent c148ff8a
kwebb 2003/07/22 18:48:44 MDT
Modified files:
Added files:
tmcd/linux delaysetup
Here we have the Linux delaysetup startup script - first revision. This
uses iproute2+tc, modprobe, and iptables to setup traffic shaping.
A few notes are warranted:
1) [g]red is not yet supported
- need to make these modules classful in the kernel first
2) sysctls are used here to up the amount of buffer space available for
sk_bufs (socket buffers). Couldn't see a place to do this in the kernel
3) Only linkdelay support is implemented
- probably could add normal delay-node support without too much trouble.
4) reverse pipe numbers are (currently) ignored
- not needed since the IMQ device used to shape incoming traffic
is distinct from the actual interface - no namespace collision.
5) Kernel selection is similar to FBSD: check running kernel, and reboot
if the kernel version isn't what we expect (have to rerun lilo too)
kwebb 2003/07/22 18:40:34 MDT
Added files:
delay/linux README
delay/linux/iptables_mods iptables-1.2.6a-imq.diff-3
delay/linux/kmods patch-combined-linkdelays-2.4.18
This commit represents the culmination of my work on linux traffic shaping.
Both changes to the kernel, and to userland control applications are included
in this checkin. At present, these files are combined patches; I'll be
separating out the Emulab specific additions/changes in the near future.
The best resource (currently) for understanding the Linux traffic control
mechanisms is at the Linux Diffserv project home page (under Documentation):
The most noteworthy contributions I've made are the PLR module and DELAY
module port and enhancement. These two modules are classful (though they
don't use classification filters) and can be chained together with other
modules such as the Heirarchical Token Bucket (used for limiting bandwith).
Note that this checkin also includes the patches necessary to obtain
Intermediate Queueing Devices (IMQ) and HTB control under iproute2+tc. The
IMQ devices allow the attachment of qdiscs on the incoming side of a real
interface (can't do this without them). See:
The Linux Advanced Routing HOWTO is another good source of information:
stoller 2003/07/15 15:25:03 MDT
Modified files:
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