[Cake] Cake with Deep Packet Inspection

Thu Nov 10 23:28:41 EST 2016

On Fri, Nov 11, 2016 at 10:52 AM, Outback Dingo <outbackdingo at gmail.com> wrote:
> On Fri, Nov 11, 2016 at 10:42 AM, Noah Causin <n0manletter at gmail.com> wrote:
>> I took an extra router I had and bridged two ports on the router's switch,
>> so they just pass traffic. (eth0.2 and eth0.3)
>>
>> Clients >-[Main Router] --[Extra Router]--[Cable-Modem]
>>
>> The extra router is passive.  It acts like it's part of the Ethernet cable
>> between the main router and cable modem.  It does not interfere.
>>
>> The extra router needs these packages:
>>
>> kmod-ebtables, kmod-ebtables-ipv4, kmod-crypto-pcompress and the two
>> packages compiled from the Makefile I showed below (iptables-mod-ndpi and
>> iptables-mod-ndpi)
>>
>> I edited /etc/sysctl.conf and change the last two lines to this:
>>
>> net.bridge.bridge-nf-call-ip6tables=1
>> net.bridge.bridge-nf-call-iptables=1
>>
>> This enables bridge firewalling, so the traffic between the two ports can be
>> marked.
>>
>> I then added firewall rules to LuCIs custom firewall rules tab.
>>
>> Example Rules, modify classes as desired:
>>
>> iptables -t mangle -A FORWARD -m ndpi --steam -m mac ! --mac-source Your
>> Main Router's Mac Address -j DSCP --set-dscp-class cs0
>> iptables -t mangle -A FORWARD -m ndpi --youtube -m mac ! --mac-source Your
>> Main Router's Mac Address -j DSCP --set-dscp-class cs2
>>
>> iptables -t mangle -A FORWARD -m ndpi --netflix -m mac ! --mac-source Your
>> Main Router's Mac Address -j DSCP --set-dscp-class cs3
>> iptables -t mangle -A FORWARD -m ndpi --skype -m mac ! --mac-source Your
>> Main Router's Mac Address -j DSCP --set-dscp-class cs4
>>
>> Have your main router use some form of DiffServ for both upload and download
>> on its WAN interface.  For upload traffic, you just need the two packages
>> from the makefile to be installed on the main router and create firewall
>> rules like this:
>>
>> iptables -t mangle -A FORWARD -o eth2 -m ndpi --netflix -j DSCP
>> --set-dscp-class cs3
>> iptables -t mangle -A FORWARD -o eth2 -m ndpi --skype -j DSCP
>> --set-dscp-class cs4
>>
>> If you need help building a custom firmware image, just let me know.
>>
>
> Ok got it, its in-line.... right now im fighting the GFW of China
> using shadowsocks and chinadns so im pretty customized already,
> i was having issues with sqm and kernel segfaults on 4.4.30 ill build
> a cake and DPI image and see how that goes, maybe Ill try this
> after i deem sqm is stable with cake on this build. It a ZBT-WG3526
> router... so its ralink based

like i stated on LEDE major issues when sqm is enabled.... even with
cake... is nobody else seeing these issues?

[  569.020000]  1-...: (6 GPs behind) idle=236/0/0 softirq=50607/50613 fqs=1
[  569.020000]  (detected by 0, t=6002 jiffies, g=5799, c=5798, q=573)
[  569.020000] Task dump for CPU 1:
[  569.020000] swapper/1       R running      0     0      1 0x00100000
[  569.020000] Stack : 00000000 00000001 00000015 00000000 00000000
00000001 8045a2a4 80410000
[  569.020000]    8041275c 00000001 00000001 80412540 80412724
80410000 00000000 800132e8
[  569.020000]    1100fc03 00000001 8fc60000 8fc61ec0 80410000
8005c870 1100fc03 00000001
[  569.020000]    00000000 80410000 8045a2a4 8005c868 80410000
8001ade0 1100fc03 00000000
[  569.020000]    00000004 804124a0 000000a0 8001ade8 fe9ff9db
aefffbff fff77fe7 dfffffef
[  569.020000]    ...
[  569.020000] Call Trace:
[  569.020000] [<8000bba8>] __schedule+0x574/0x758
[  569.020000] [<800132e8>] r4k_wait_irqoff+0x0/0x20
[  569.020000]
[  569.020000] rcu_sched kthread starved for 6001 jiffies! g5799 c5798
f0x0 s3 ->state=0x1
[  629.130000] INFO: rcu_sched detected stalls on CPUs/tasks:
[  629.130000]  1-...: (8 GPs behind) idle=756/0/0 softirq=50607/50613 fqs=1
[  629.130000]  (detected by 0, t=6002 jiffies, g=5801, c=5800, q=653)
[  629.130000] Task dump for CPU 1:
[  629.130000] swapper/1       R running      0     0      1 0x00100000
[  629.130000] Stack : 00000000 bfd47c67 00000094 ffffffff 00000081
00000011 8045a2a4 80410000
[  629.130000]    8041275c 00000001 00000001 80412540 80412724
80410000 000010d9 800132e8
[  629.130000]    1100fc03 00000001 8fc60000 8fc61ec0 80410000
8005c870 1100fc03 00000001
[  629.130000]    00000000 80410000 8045a2a4 8005c868 80410000
8001ade0 1100fc03 00000000
[  629.130000]    00000004 804124a0 000000a0 8001ade8 fe9ff9db
aefffbff fff77fe7 dfffffef
[  629.130000]    ...
[  629.130000] Call Trace:
[  629.130000] [<8000bba8>] __schedule+0x574/0x758
[  629.130000] [<800132e8>] r4k_wait_irqoff+0x0/0x20
[  629.130000]
[  629.130000] rcu_sched kthread starved for 6001 jiffies! g5801 c5800
f0x0 s3 ->state=0x1
[  692.940000] INFO: rcu_sched detected stalls on CPUs/tasks:
[  692.940000]  1-...: (0 ticks this GP) idle=4c2/0/0
softirq=50613/50613 fqs=0
[  692.940000]  2-...: (25 GPs behind) idle=55a/0/0 softirq=28459/28460 fqs=0
[  692.940000]  3-...: (25 GPs behind) idle=5c2/0/0 softirq=30711/30982 fqs=0
[  692.940000]  (detected by 0, t=6002 jiffies, g=5824, c=5823, q=3190)
[  692.940000] Task dump for CPU 1:
[  692.940000] swapper/1       R running      0     0      1 0x00100000
[  692.940000] Stack : 00000000 3646fb94 000000af ffffffff 0000008f
d2f1a9fc 8045a2a4 80410000
[  692.940000]    8041275c 00000001 00000001 80412540 80412724
80410000 000010d9 800132e8
[  692.940000]    00000000 00000001 8fc60000 8fc61ec0 80410000
8005c870 1100fc03 00000001
[  692.940000]    00000000 80410000 8045a2a4 8005c868 80410000
8001ade0 1100fc03 00000000
[  692.940000]    00000004 804124a0 000000a0 8001ade8 fe9ff9db
aefffbff fff77fe7 dfffffef
[  692.940000]    ...
[  692.940000] Call Trace:
[  692.940000] [<8000bba8>] __schedule+0x574/0x758
[  692.940000] [<800132e8>] r4k_wait_irqoff+0x0/0x20
[  692.940000]
[  692.940000] Task dump for CPU 2:
[  692.940000] swapper/2       R running      0     0      1 0x00100000
[  692.940000] Stack : 00000000 00000001 00000010 00000000 00000000
00010001 8045a2a4 80410000
[  692.940000]    8041275c 00000001 00000000 804125e0 80412724
80410000 00000000 800132e8
[  692.940000]    1100fc03 00000002 8fc62000 8fc63ec0 80410000
8005c870 1100fc03 00000002
[  692.940000]    00000000 80410000 8045a2a4 8005c868 80410000
8001ade0 1100fc03 00000000
[  692.940000]    00000004 804124a0 000000a0 8001ade8 fbffbfdf
7fff7b3b 7ffaeff8 67fbffff
[  692.940000]    ...
[  692.940000] Call Trace:
[  692.940000] [<8000bba8>] __schedule+0x574/0x758
[  692.940000] [<800132e8>] r4k_wait_irqoff+0x0/0x20
[  692.940000]
[  692.940000] Task dump for CPU 3:
[  692.940000] swapper/3       R running      0     0      1 0x00100000
[  692.940000] Stack : 00000000 a69c5765 000000a3 ffffffff 0000008f
00000020 8045a2a4 80410000
[  692.940000]    8041275c 00000001 00000001 80412680 80412724
80410000 000010d9 800132e8
[  692.940000]    1100fc03 00000003 8fc64000 8fc65ec0 80410000
8005c870 1100fc03 00000003
[  692.940000]    00000000 80410000 8045a2a4 8005c868 80410000
8001ade0 1100fc03 00000000
[  692.940000]    00000004 804124a0 000000a0 8001ade8 fefffbdb
aefffbfb fff77fe7 dfffffef
[  692.940000]    ...
[  692.940000] Call Trace:
[  692.940000] [<8000bba8>] __schedule+0x574/0x758
[  692.940000] [<800132e8>] r4k_wait_irqoff+0x0/0x20
[  692.940000]
[  692.940000] rcu_sched kthread starved for 6002 jiffies! g5824 c5823
f0x0 s3 ->state=0x1
root at lede:~# packet_write_wait: Connection to 192.168.20.1 port 22: Broken pipe

>
>>
>> On 11/10/2016 9:06 PM, Outback Dingo wrote:
>>
>> On Fri, Nov 11, 2016 at 9:55 AM, Noah Causin <n0manletter at gmail.com> wrote:
>>
>> I finally got my project working.
>>
>> I integrated the NDPI Deep Packet Inspection engine into my LEDE build, so I
>> could prioritize applications using Cake.
>>
>> http://www.ntop.org/products/deep-packet-inspection/ndpi/
>>
>> NDPI integrates into IPTables, which allows me to DSCP mark packets.  Cake
>> reads the DiffServ markings and puts the traffic into appropriate classes.
>>
>> I found a Makefile which successfully compiles:
>> https://github.com/981213/lede_src/blob/0d344bc2958838dcbc547a8f0a3d8842e6f6d2f8/package/my_package/ndpi-netfilter/Makefile
>>
>> The system works very well.  Steam traffic is deprioritized to allow
>> applications like YouTube, Netflix, and Skype to receive higher amounts of
>> the available bandwidth.
>>
>> What I do for ingress is bridge two ports on an extra router, enable bridge
>> firewalling, and create IPTables rules to mark downstream packets.  The
>> router I use is a D-Link DGL-5500, which is comparable to an Archer C7.
>>
>> IPv6 support is not available in this netfilter module, but the IPv4 support
>> is great.
>>
>> Noah Causin
>>
>> very nice.... however, can you describe a bit better how you
>> configured for ingress ? a second router?  configuration file ? your
>> high level description seems a bit confusing to me
>>
>>
>> _______________________________________________
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>> Cake at lists.bufferbloat.net
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>>
>>