[LARTC] The re-classifying

["Tarek Amr" <tarekamr@haridy.com>]

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Referring to Differentiated Services on Linux <draft-almesberger-wajhak-diffserv-linux-01.txt>
I read the examples there; they seem to be very helpful. Especially the last two ones of thee EF

But in my case I am working on an exterior node (packets are not marked yet)

Here is a brief description of my problem.

 

 

1.    tc qdisc add dev eth0 handle 1:0 root dsmark indices 64 set_tc_index

2.    tc class change dev eth0 parent 1:0 classid 1:1 dsmark mask 0x3 value 0xb8

3.    tc class change dev eth0 parent 1:0 classid 1:2 dsmark mask 0x3 value 0x28

4.    tc class change dev eth0 parent 1:0 classid 1:3 dsmark mask 0x3 value 0x30

5.    tc class change dev eth0 parent 1:0 classid 1:4 dsmark mask 0x3 value 0x38

6.    tc class change dev eth0 parent 1:0 classid 1:5 dsmark mask 0x3 value 0x48

7.    tc class change dev eth0 parent 1:0 classid 1:6 dsmark mask 0x3 value 0x50

8.    tc class change dev eth0 parent 1:0 classid 1:7 dsmark mask 0x3 value 0x58

9.    tc class change dev eth0 parent 1:0 classid 1:8 dsmark mask 0x3 value 0x60

10.      tc class change dev eth0 parent 1:0 classid 1:9 dsmark mask 0x3 value 0x70

11.      tc class change dev eth0 parent 1:0 classid 1:a dsmark mask 0x3 value 0x78

12.      tc class change dev eth0 parent 1:0 classid 1:b dsmark mask 0x3 value 0x88

13.      tc class change dev eth0 parent 1:0 classid 1:c dsmark mask 0x3 value 0x90

14.      tc class change dev eth0 parent 1:0 classid 1:d dsmark mask 0x3 value 0x98

15.      tc qdisc add dev eth0 handle 2:0 parent 1:0 cbq bandwidth 10Mbit cell 8 avpkt 1000 mpu 64

16.      tc class add dev eth0 classid 2:1 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 1 bounded allot 1514 weight 1 maxburst 21

17.      tc class add dev eth0 classid 2:2 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 2 bounded allot 1514 weight 1 maxburst 21

18.      tc class add dev eth0 classid 2:3 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 3 bounded allot 1514 weight 1 maxburst 21

19.      tc class add dev eth0 classid 2:4 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 4 bounded allot 1514 weight 1 maxburst 21

20.      tc class add dev eth0 classid 2:5 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 5 bounded allot 1514 weight 1 maxburst 21

21.      tc class add dev eth0 classid 2:6 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 6 bounded allot 1514 weight 1 maxburst 21

22.      tc class add dev eth0 classid 2:7 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 7 bounded allot 1514 weight 1 maxburst 21

23.      tc class add dev eth0 classid 2:8 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 8 bounded allot 1514 weight 1 maxburst 21

24.      tc class add dev eth0 classid 2:9 parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 9 bounded allot 1514 weight 1 maxburst 21

25.      tc class add dev eth0 classid 2:a parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 10 bounded allot 1514 weight 1 maxburst 21

26.      tc class add dev eth0 classid 2:b parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 11 bounded allot 1514 weight 1 maxburst 21

27.      tc class add dev eth0 classid 2:c parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 12 bounded allot 1514 weight 1 maxburst 21

28.      tc class add dev eth0 classid 2:d parent 2:0 cbq bandwidth 10Mbit rate 50Kbit avpkt 1000 prio 13 bounded allot 1514 weight 1 maxburst 21

29.      etc.

 

 

 

So here in lines 1, 2, till 14 I made a rood qdisc “DSMARK” and put in it two “DSMARK” classes for marking 0xb8, and 0x28, etc

In lines 15, 16, till 28 I added a “CBQ”

 

Now I have no problem in making filters to classify the incoming traffic according to their IP header (u32, etc) and to point them to the “DSMARK” classes 1:1, and 1:2.

 

But I need to reclassify the packets within the “CBQ” again, according to the mark they had had.

The problem here that I tried to use a “TCINDEX” filter

 

E.g. tc filter add dev eth0 parent 2:0 protocol ip prio 1 tcindex handle 1 tcindex classid 2:1

 

This filter is supposed to point the traffic with the mark 0xb8 to classid 2:1

 

But when I added the rest of the filters to point to the classes 2:2, 2:3, 2:d .. only some of the filters worked well and the rest didn’t

 

Also in that “TCINDEX” filter, what value does that handle take? Is it in hex or decimal or is it just the marking classid or what?

 

 

BEST REGARDS 

 


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