Re: [LARTC] help htb class

[Patrick McHardy <kaber@trash.net>]

Ciprian Niculescu wrote:
> tc qdisc del dev eth0 root
> tc qdisc add dev eth0 root handle 1: htb default 5
> tc class add dev eth0 parent 1: classid 1:1 htb rate 5mbit prio 1
> 
> tc class add dev eth0 parent 1:1 classid 1:2 htb rate 3mbit prio 2
> 
> tc class add dev eth0 parent 1:2 classid 20:1 htb rate 2mbit
> RTNETLINK answers: Invalid argument

I guess it should probably either qdisc add or classid 1:3 ...

> 
> 
> i don't understand, why???
> 

from include/linux/pkt_sched.h:
/* "Handles"
    ---------

     All the traffic control objects have 32bit identifiers, or "handles".

     They can be considered as opaque numbers from user API viewpoint,
     but actually they always consist of two fields: major and
     minor numbers, which are interpreted by kernel specially,
     that may be used by applications, though not recommended.

     F.e. qdisc handles always have minor number equal to zero,
     classes (or flows) have major equal to parent qdisc major, and
     minor uniquely identifying class inside qdisc.

     Macros to manipulate handles:
  */
...

Bye,
Patrick

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