Re: [LARTC] Re: vlan interfaces and tc

[Michal Soltys <nozo@ziu.info>]

Christian Benvenuti wrote:
> 
> This is one important detail you probably missed:
> 
>> (Note that in this case the VLAN interface is a L3 interface)
> 
> If you assign an IP address to the VLAN interface and you transmit
> IP traffic on that interface, than the traffic goes through the VLAN
> qdisc config and classification works (*).
> 
 > [config cut]
 >

When I was doing testing with some trivial setup, I did pretty much the same 
thing as in your config (forward note - also checked htb, smaller mtu, vlan 
if up and down).

In order:

#vconfig add eth0 11
#ip add add 192.168.20.10/24 dev eth0.11 broad +
#ip li set eth0.11 up

#tc qdisc add dev eth0.11 root handle 1:0 hfsc default 1
#tc class add dev eth0.11 parent 1:0 classid 1:1  hfsc sc rate 10mbit
#tc class add dev eth0.11 parent 1:0 classid 1:21 hfsc sc rate 10mbit

#tc filter add dev eth0.11 parent 1:0 proto ip prio 10 u32 flowid 1:21 \
	match ip dst 192.168.20.1

#ip add sh dev eth0.11

12: eth0.11@eth0: <BROADCAST,MULTICAST,SLAVE,UP,10000> mtu 1500 qdisc hfsc
     link/ether 00:0c:f1:da:e9:46 brd ff:ff:ff:ff:ff:ff
     inet 192.168.20.10/24 brd 192.168.20.255 scope global eth0.11

#tc -d filter sh dev eth0.11

filter parent 1: protocol ip pref 10 u32
filter parent 1: protocol ip pref 10 u32 fh 800: ht divisor 1
filter parent 1: protocol ip pref 10 u32 fh 800::800 order 2048 key ht 800
     bkt 0 flowid 1:21 match c0a81401/ffffffff at 16

#tc -d class sh dev eth0.11

class hfsc 1: root
class hfsc 1:1 parent 1: sc m1 0bit d 0ns m2 10000Kbit
class hfsc 1:21 parent 1: sc m1 0bit d 0ns m2 10000Kbit

... then I did

ping 192.168.20.1

... and ended with

#tc -d -s class sh dev eth0.11

class hfsc 1: root
  Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
  rate 0bit 0pps backlog 0b 0p requeues 0
  period 0 level 1

class hfsc 1:1 parent 1: sc m1 0bit d 0ns m2 10000Kbit
  Sent 348 bytes 9 pkt (dropped 0, overlimits 0 requeues 0)
  rate 0bit 0pps backlog 0b 0p requeues 0
  period 9 work 348 bytes rtwork 348 bytes level 0

class hfsc 1:21 parent 1: sc m1 0bit d 0ns m2 10000Kbit
  Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
  rate 0bit 0pps backlog 0b 0p requeues 0
  period 0 level 0

#tc -d -s filter sh dev eth0.11

filter parent 1: protocol ip pref 10 u32
filter parent 1: protocol ip pref 10 u32 fh 800: ht divisor 1
filter parent 1: protocol ip pref 10 u32 fh 800::800 order 2048 key ht 800 
bkt 0 flowid 1:21  (rule hit 0 success 0)
   match c0a81401/ffffffff at 16 (success 0 )


... so I'm probably missing / not seeing something simple, or I don't know. 
This setup works for real interface, as well as for bonding. During testing, 
real interface is normally working in 192.168.100/24 subnet.

"Moving" from OBSD I'm checking what I can and cannot do under linux, so my 
kernel is a bit full atm, with majority of stuff compiled into it.

I'm using clean & patched gentoo here.
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