[LARTC] Anyone seen this?

* [LARTC] Anyone seen this?
@ 2002-10-31 19:59 Tim Carr
  2002-10-31 21:28 ` Stef Coene
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: Tim Carr @ 2002-10-31 19:59 UTC (permalink / raw)
  To: lartc

I'm moving my old HTB script over from my old slackware install (using older iproute2, version iproute2-ss991023) onto my brand-spanking-new Debian 3.0r0 (woody) machine, running newer version iproute2-ss010824.  But in the new version of "tc", the very first command of the script gives "RTNETLINK answers: Invalid argument".  However, if I use the OLD tc (991023), it works fine (and so does the rest of my script).  Therefore it's not my kernel etc; it must be some difference on the cmd-line between the two versions of iproute2.  But no matter how hard i try, I can't find out what the new syntax should be. Here's the line that's failing:

tc qdisc add dev eth0 root handle 1: htb default 13

Any ideas how to make that work with the new version?

Also, here's my HTB/SFQ setup for my house, I wonder if one of you genii could have a look over it and tell me the crap parts and how to improve :)  My setup is one cablemodem connection with 25k/sec max upstream, and about 100k/sec downstream.  I have 3 main classes (if that's the right word), one for SSH traffic, one for ACKs, and one for the personal PCs of the 3 guys that live in our house (including me). Here goes:

------------------------
#!/bin/sh

tc qdisc del dev eth0 root handle 1: htb default 13 1>/dev/null 2>/dev/null
tc qdisc add dev eth0 root handle 1: htb default 13

UPRATE="21"
SINGLE_HUMAN_CEIL="19"
NON_CRITICAL="14"
SINGLE_HUMAN_UPRATE="4"
CRIT_SSH="2"
CRIT_NONSSH="5"

# root
tc class add dev eth0 parent 1: classid 1:1 htb rate ${UPRATE}kbps ceil ${UPRATE}kbps burst 2k

# child 1 - PCs (tim/peter/brian/router PCs) - has leaves underneath
tc class add dev eth0 parent 1:1 classid 1:2 htb rate ${NON_CRITICAL}kbps ceil ${UPRATE}kbps burst 2k prio 3

# child 2 - time critical traffic (interactive traffic, etc) - has no leaves!
tc class add dev eth0 parent 1:1 classid 1:3 htb rate ${CRIT_SSH}kbps ceil ${UPRATE}kbps burst 2k prio 1

# child 3 - time critical traffic (interactive traffic, etc) - has no leaves!
tc class add dev eth0 parent 1:1 classid 1:4 htb rate ${CRIT_NONSSH}kbps ceil ${UPRATE}kbps burst 2k prio 2

# 1:10 tim
tc class add dev eth0 parent 1:2 classid 1:10 htb rate ${SINGLE_HUMAN_UPRATE}kbps ceil ${SINGLE_HUMAN_CEIL}kbps burst 2k prio
3

# 1:11 peter
tc class add dev eth0 parent 1:2 classid 1:11 htb rate ${SINGLE_HUMAN_UPRATE}kbps ceil ${SINGLE_HUMAN_CEIL}kbps burst 2k prio
3

# 1:12 brian
tc class add dev eth0 parent 1:2 classid 1:12 htb rate ${SINGLE_HUMAN_UPRATE}kbps ceil ${SINGLE_HUMAN_CEIL}kbps burst 2k prio
3

# 1:13 default - includes this router
tc class add dev eth0 parent 1:2 classid 1:13 htb rate 2kbps ceil ${SINGLE_HUMAN_CEIL}kbps burst 2k prio 3

# use SFQ (stochastic fair queueing) for everything
tc qdisc add dev eth0 parent 1:10 handle 10: sfq perturb 10
tc qdisc add dev eth0 parent 1:11 handle 11: sfq perturb 10
tc qdisc add dev eth0 parent 1:12 handle 12: sfq perturb 10
tc qdisc add dev eth0 parent 1:13 handle 13: sfq perturb 10
tc qdisc add dev eth0 parent 1:3 handle 3: sfq perturb 10
tc qdisc add dev eth0 parent 1:4 handle 4: sfq perturb 10

# matchings

# match any ACK packets to interactive (critical traffic)
tc filter add dev eth0 parent 1: protocol ip prio 5 u32 \
   match ip protocol 6 0xff \
   match u8 0x05 0x0f at 0 \
   match u16 0x0000 0xffc0 at 2 \
   match u8 0x10 0xff at 33 \
   flowid 1:4

# match ping packets to critical traffic
tc filter add dev eth0 parent 1: protocol ip prio 7 u32 \
        match ip protocol 1 0xff flowid 1:4

# match SSH (not scp) to critical traffic
tc filter add dev eth0 parent 1: protocol ip prio 6 u32 \
      match ip tos 0x10 0xff  flowid 1:3

# match packets MARKed by iptables for individual PCs
tc filter add dev eth0 protocol ip parent 1:0 prio 10 handle 10 fw flowid 1:10
tc filter add dev eth0 protocol ip parent 1:0 prio 10 handle 11 fw flowid 1:11
tc filter add dev eth0 protocol ip parent 1:0 prio 10 handle 12 fw flowid 1:12
-------------------------

It works, but i'm not sure if it could be improved at all. I don't know much about burst/prio settings for HTB, and even less about the SFQ stuff i'm using with perturb 10. Also, I get some warnings about HTB's quantums in various log files, none of which I understand. 

All help welcome!

many thanks,

tim

----------------------------------- 
Tim Carr 
Co-op Student - Unix Group 
RIM Canada 
(519) 888-7465 x2561 

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