[LARTC] tc -s class problem (with cbq only)

[LARTC] tc -s class problem (with cbq only)

[arek]

I have changed kernel to 2.2.22 and have a problem:

#tc -s class ls dev eth3
and
#tc show class dev eth3
and
#tc -s -d class ls dev eth3

shows me NOTHING when i use CBQ queues on interface !!!

i can olny watch queues (QDISC) with:
#tc -s qdisc ls dev eth3
(this is working OK, as earlier)

I tried many of tc bin's (from devik, compiled, old , etc) - nothing help.

the tc -s class ls dev eth0 works fine, when i used HTB queues.

How to solve that problem ?

this is trace of problem:
open("/proc/net/psched", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40014000
read(3, "000c8000 000f4240 000f4240 00000"..., 4096) = 36
close(3)                                = 0
munmap(0x40014000, 4096)                = 0
socket(PF_NETLINK, SOCK_RAW, 0)         = 3
bind(3, {sin_family¯_NETLINK, {sa_family\x16,
sa_data="\0\0\0\0\0\0\0\0\0\0@\25\6\10"}, 12) = 0
getsockname(3, {sin_family¯_NETLINK, {sa_family\x16,
sa_data="q\3375<\0\0\0\0\0\0@\25\6\10"}, [12]) = 0
time(NULL)                              = 1070634212
sendto(3, "\24\0\0\0\22\0\1\3\345\224\320?\0\0\0\0\0006\1@", 20, 0,
{sin_family¯_NETLINK, {sa_family\x16,
sa_data="\0\0\0\0\0\0\0\0\0\0\24\0\0\0"}, 12) = 20
recvmsg(3, {msg_name(12)={sin_family¯_NETLINK, {sa_family\x16,
sa_data="\21\300\0\0\0\0\0\0\0\0\264\0\0\0"},
msg_iov(1)=[{"\264\0\0\0\20\0\2\0\345\224\320?5
recvmsg(3, {msg_name(12)={sin_family¯_NETLINK, {sa_family\x16,
sa_data="\301\367\0\0\0\0\0\0\0\0\24\0\0\0"},
msg_iov(1)=[{"\24\0\0\0\3\0\2\0\345\224\320?5<\
sendmsg(3, {msg_name(12)={sin_family¯_NETLINK, {sa_family\x16,
sa_data="\0\0\0\0\0\0\0\0\0\0$\0\0\0"},
msg_iov(2)=[{"$\0\0\0*\0\1\3\346\224\320?\0\0\0\0", 1
recvmsg(3, {msg_name(12)={sin_family¯_NETLINK, {sa_family\x16,
sa_data="\301\367\0\0\0\0\0\0\0\0\24\0\0\0"},
msg_iov(1)=[{"\24\0\0\0\3\0\2\0\346\224\320?5<\
_exit(0)                                = ?
Why does it exit's here ?? if i'm sure that there are queues/classes on that
interface:
here i past them :
# tc -s qdisc ls dev eth3 |head -n 10
qdisc tbf 84e3: rate 160Kbit burst 300Kb peakrate 10Mbit minburst 1600b lat
189.2ms
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)

 qdisc tbf 84e2: rate 640Kbit burst 300Kb peakrate 10Mbit minburst 1600b lat
189.2ms
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)

 qdisc tbf 84e1: rate 150Kbit burst 300Kb peakrate 10Mbit minburst 1600b lat
189.2ms
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)

 qdisc tbf 84e0: rate 600Kbit burst 300Kb peakrate 10Mbit minburst 1600b lat
189.2ms



PLEASE HELP ME !


A.Binder

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RE: [LARTC] tc -s class problem (with cbq only)

[arek]

 > I have changed kernel to 2.2.22 and have a problem:
 >
 > #tc -s class ls dev eth3
 > and
 > #tc show class dev eth3
 > and
 > #tc -s -d class ls dev eth3
 >
 > shows me NOTHING when i use CBQ queues on interface !!!

 I found where is a problem,,, It occurs only when i use only in one or more
class a TBF queue discipline.

 Even when i use the sample from LARTC.org script.

 Instead of : (the actual CBQ script)
 ##tc qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 10
 i use a tbf queue:
 #tc qdisc add dev $DEV parent 1:20 handle 30: tbf rate 20kbit
 buffer 1600 limit 3000


 and after that
 tc -s class ls dev $DEV shows NOTHING !!!

 if I use a SFQ queue, tc -s class ls dev $DEV works OK.

 I'm not doing some stupid mistake on that...

 A.Binder

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