Comments (15)
thombashi
commented on May 29, 2024
Thank you for your report.
I suppose that the error message indicates that missing kernel module that required for incoming packet settings.
Could you confirm that your environment has installed sch_netem module?
How to do that is described in README Troubleshooting section.
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1558204459
commented on May 29, 2024
Thanks for your reply
I tried execute the command modprobe sch_netem,and it execute successfully
but after that,this error still exist
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1558204459
commented on May 29, 2024
I test it in another machine,it gives me the same error
I think it maybe not the sch_netem error,it maybe parsing's error
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thombashi
commented on May 29, 2024
Thank you for confirmation.
Looks like we need some more information to solve the issue.
Since parse error message and RTNETLINK answers: Operation not supported are output by Linux.
Would you tell below information?:
- Linux distribution version
- iproute2 package version
- tcconfig version
- tcconfig execution log with
--debugoption - output of
modinfo sch_netem
I've succeeded to execute your command in the following environment:
- Linux distribution version:
Debian 8.6 - iproute2 package version:
3.16.0-2 - tcconfig version:
0.6.6
output of modinfo sch_netem
modinfo sch_netem
filename: /lib/modules/3.16.0-4-amd64/kernel/net/sched/sch_netem.ko
license: GPL
depends:
intree: Y
vermagic: 3.16.0-4-amd64 SMP mod_unload modversions
and please execute the following commands and post the results to identify the problem more detailed.
(tcset execute following commands with your options.)
ip link add ifb6682 type ifb
ip link set dev ifb6682 up
tc qdisc add dev eth0 ingress
tc filter add dev eth0 parent ffff: protocol ip u32 match u32 0 0 flowid 1a1a: action mirred egress redirect dev ifb6682
tc qdisc add dev ifb6682 root handle 1a1a: prio
tc filter add dev ifb6682 protocol ip parent 1a1a: prio 2 u32 match ip src 0.0.0.0/0 flowid 1a1a:3
tc qdisc add dev ifb6682 parent 1a1a:3 handle 1a25: netem
tc qdisc add dev ifb6682 parent 1a25:3 handle 20: tbf rate 1000.000000kbit buffer 1600 limit 10000
from tcconfig.
1558204459
commented on May 29, 2024
Thanks for your detailed reply
- Linux distribute version:
Armbian(Base on debian,running at devices like raspberry pi) - iproute2 package version:
3.16.0-2 - tcconfig version:
0.7.0-alpha-1
output of modinfo sch_netem
filename: /lib/modules/3.4.112-sun4i/kernel/net/sched/sch_netem.ko
license: GPL
srcversion: B9EA1B74A8886503607B4DA
depends:
intree: Y
vermagic: 3.4.112-sun4i preempt mod_unload modversions ARMv7 p2v8
Using debug in the command,and the output
[2016-11-26 14:11:34.994536] DEBUG: subprocrunner: lsmod | grep sch_netem
[2016-11-26 14:11:35.067716] DEBUG: subprocrunner: modprobe ifb
[2016-11-26 14:11:35.165137] WARNING: subprocrunner: returncode=1, stderr=modprobe: FATAL: Module ifb not found.
[2016-11-26 14:11:35.175483] DEBUG: subprocrunner: ip link add ifb6682 type ifb
[2016-11-26 14:11:35.265925] WARNING: subprocrunner: returncode=2, stderr=RTNETLINK answers: Operation not supported
[2016-11-26 14:11:35.269572] DEBUG: subprocrunner: ip link set dev ifb6682 up
[2016-11-26 14:11:35.301738] WARNING: subprocrunner: returncode=1, stderr=Cannot find device "ifb6682"
[2016-11-26 14:11:35.305019] DEBUG: subprocrunner: tc qdisc add dev eth0 ingress
[2016-11-26 14:11:35.324930] WARNING: subprocrunner: returncode=2, stderr=RTNETLINK answers: No such file or directory
[2016-11-26 14:11:35.333623] DEBUG: subprocrunner: tc filter add dev eth0 parent ffff: protocol ip u32 match u32 0 0 flowid 1a1a: action mirred egress redirect dev ifb6682
[2016-11-26 14:11:35.365144] WARNING: subprocrunner: returncode=1, stderr=Cannot find device "ifb6682"
bad action parsing
parse_action: bad value (5:mirred)!
Illegal "action"
[2016-11-26 14:11:35.369221] DEBUG: subprocrunner: tc qdisc add dev ifb6682 root handle 1a1a: prio
[2016-11-26 14:11:35.396180] WARNING: subprocrunner: returncode=1, stderr=Cannot find device "ifb6682"
[2016-11-26 14:11:35.399954] DEBUG: subprocrunner: tc filter add dev ifb6682 protocol ip parent 1a1a: prio 2 u32 match ip src 0.0.0.0/0 flowid 1a1a:3
[2016-11-26 14:11:35.426431] WARNING: subprocrunner: returncode=1, stderr=Cannot find device "ifb6682"
[2016-11-26 14:11:35.430244] DEBUG: subprocrunner: tc qdisc add dev ifb6682 parent 1a1a:3 handle 1a25: netem
[2016-11-26 14:11:35.456429] WARNING: subprocrunner: returncode=1, stderr=Cannot find device "ifb6682"
[2016-11-26 14:11:35.460291] DEBUG: subprocrunner: tc qdisc add dev ifb6682 parent 1a25:3 handle 20: tbf rate 1000.000000kbit buffer 1600 limit 10000
[2016-11-26 14:11:35.486867] WARNING: subprocrunner: returncode=1, stderr=Cannot find device "ifb6682"
For some reason,I will test your tc command later,Then I will give you the feedback
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1558204459
commented on May 29, 2024
How can I revover my previous setting If I execute this commands
ip link add ifb6682 type ifb
ip link set dev ifb6682 up
tc qdisc add dev eth0 ingress
tc filter add dev eth0 parent ffff: protocol ip u32 match u32 0 0 flowid 1a1a: action mirred egress redirect dev ifb6682
tc qdisc add dev ifb6682 root handle 1a1a: prio
tc filter add dev ifb6682 protocol ip parent 1a1a: prio 2 u32 match ip src 0.0.0.0/0 flowid 1a1a:3
tc qdisc add dev ifb6682 parent 1a1a:3 handle 1a25: netem
tc qdisc add dev ifb6682 parent 1a25:3 handle 20: tbf rate 1000.000000kbit buffer 1600 limit 10000
I am afraid of not know how to recover it,for there are some important service running at this system
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thombashi
commented on May 29, 2024
You can remove existing tc settings with following commands:
tc qdisc del dev eth0 root
tc qdisc del dev eth0 ingress
tc qdisc del dev ifb6682 root
ip link set dev ifb6682 down
ip link delete ifb6682 type ifb
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1558204459
commented on May 29, 2024
This is the result of the tc command
root@cubieboard:~# ip link add ifb6682 type ifb
RTNETLINK answers: Operation not supported
root@cubieboard:~# ip link set dev ifb6682 up
Cannot find device "ifb6682"
root@cubieboard:~# tc qdisc add dev eth0 ingress
RTNETLINK answers: No such file or directory
root@cubieboard:~# tc filter add dev eth0 parent ffff: protocol ip u32 match u32 0 0 flowid 1a1a: action mirred egress redirect dev ifb6682
Cannot find device "ifb6682"
bad action parsing
parse_action: bad value (5:mirred)!
Illegal "action"
root@cubieboard:~# tc qdisc add dev ifb6682 root handle 1a1a: prio
Cannot find device "ifb6682"
root@cubieboard:~# tc filter add dev ifb6682 protocol ip parent 1a1a: prio 2 u32 match ip src 0.0.0.0/0 flowid 1a1a:3
Cannot find device "ifb6682"
root@cubieboard:~# tc qdisc add dev ifb6682 parent 1a1a:3 handle 1a25: netem
Cannot find device "ifb6682"
root@cubieboard:~# tc qdisc add dev ifb6682 parent 1a25:3 handle 20: tbf rate 1000.000000kbit buffer 1600 limit 10000
Cannot find device "ifb6682"
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1558204459
commented on May 29, 2024
it seems there isn't the ifb6682 devices
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thombashi
commented on May 29, 2024
Thank you for information.
The cause may be Linux kernel configuration. Could you check that?
sch_netem module and tc will require enabled certain kernel configs to be used.
followings are required configs (and my Debian environment configs):
cat /boot/config-3.16.0-4-amd64 | egrep "NETFILTER_NETLINK=|NETFILTER_NETLINK_QUEUE=|NETFILTER_NETLINK_LOG=|NF_CT_NETLINK=|SCSI_NETLINK=|IP_ADVANCED_ROUTER=|NET_SCH_INGRESS=|NET_SCHED=|IP_MULTIPLE_TABLES=|NETFILTER_XT_TARGET_MARK="
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_NETFILTER_NETLINK=m
CONFIG_NETFILTER_NETLINK_QUEUE=m
CONFIG_NETFILTER_NETLINK_LOG=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NET_SCHED=y
CONFIG_NET_SCH_INGRESS=m
CONFIG_SCSI_NETLINK=y
These configs need to either y or m.
Default kernel configs of Armbian may different from Debian.
How about your environments?
(name of the /boot/config-3.16.0-4-amd64 may change depends on environment.)
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1558204459
commented on May 29, 2024
It seems that I lost the CONFIG_NET_SCH_INGRESS=m config
root@cubieboard:/boot# cat config-3.4.112-sun4i | egrep "NETFILTER_NETLINK=|NETFILTER_NETLINK_QUEUE=|NETFILTER_NETLINK_LOG=|NF_CT_NETLINK=|SCSI_NETLINK=|IP_ADVANCED_ROUTER=|NET_SCH_INGRESS=|NET_SCHED=|IP_MULTIPLE_TABLES=|NETFILTER_XT_TARGET_MARK="
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_NETFILTER_NETLINK=m
CONFIG_NETFILTER_NETLINK_QUEUE=m
CONFIG_NETFILTER_NETLINK_LOG=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NET_SCHED=y
CONFIG_SCSI_NETLINK=y
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thombashi
commented on May 29, 2024
In that case, you would need to enable the config and recompile the kernel.
Seemingly, Armbian provide a means to change kernel configuration with their build script.
https://github.com/igorpecovnik/lib
How to change kernel configuration?
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1558204459
commented on May 29, 2024
Oh,thank you very much,thanks for your patiance
Tcconfig is a very good tool. I have ever thought of the such tool before
It save us lots of time , and it is very easy to use
Thanks again!!
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thombashi
commented on May 29, 2024
You are welcome.
I'm glad it is helpful to you 😃.
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thombashi
commented on May 29, 2024
I've added your case to the troubleshooting (http://tcconfig.readthedocs.io/en/latest/pages/troubleshooting.html#id1).
So, I'll close the issue.
Thank you for the issue anyway.
Feel free to reopen.
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