traffic distribution not happening on 40G ethernet card.

traffic distribution not happening on 40G ethernet card.

[Varun Sharma]

Hi,

I am using nfqnl_test.c code available on netfilter org. I have
generated two binaries (queue0 and queue1) using that nfqnl_test.c
sample code. These binaries are working as per expected behaviour in
case of 10G Ethernet but with 40G Ethernet only one queue is receiving
network traffic.

I am not able to understand why only one queue is receiving network
traffic in case of 40G Ethernet whereas same network traffic is being
distributed in both the queues with 10G Ethernet.

Machine configuration for 40G Ethernet:-

kernel -: 2.6.32-431.el6.x86_64

libmnl-1.0.3-4.el6.x86_64

libnfnetlink-1.0.1-1.el6.x86_64

libnetfilter_queue-1.0.2-1.el6.x86_64

Command used for iptables:-

iptables -A INPUT –i eth4 -j NFQUEUE --queue-balance 0:1


Output:-

[varun@exp2 ~]$ ./queue0

opening library handle

unbinding existing nf_queue handler for AF_INET (if any)

binding nfnetlink_queue as nf_queue handler for AF_INET

binding this socket to queue '0'

setting copy_packet mode

pkt received

queue0 hw_protocol=0x0800 hook=1 id=0 hw_src_addr=fc:4d:d4:d3:7f:73
indev=2 payload_len=40

entering callback

pkt received

queue0 hw_protocol=0x0800 hook=1 id=1 hw_src_addr=fc:4d:d4:d3:7f:73
indev=2 payload_len=40

entering callback

pkt received

queue0 hw_protocol=0x0800 hook=1 id=2 hw_src_addr=fc:4d:d4:d3:7f:73
indev=2 payload_len=40

entering callback

pkt received

queue0 hw_protocol=0x0800 hook=1 id=3 hw_src_addr=fc:4d:d4:f1:e1:5f
indev=2 payload_len=78

entering callback



[varun@exp2 ~]$ ./queue1

opening library handle

unbinding existing nf_queue handler for AF_INET (if any)

binding nfnetlink_queue as nf_queue handler for AF_INET

binding this socket to queue '1'

setting copy_packet mode




Please let me know if more information is required.

Regards
Varun

Re: traffic distribution not happening on 40G ethernet card.

[Eliezer Croitoru]

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Hey,

Did you found any direction about the issue?

Eliezer

On 05/05/2014 12:39 PM, Varun Sharma wrote:
> Hi,
> 
> I am using nfqnl_test.c code available on netfilter org. I have 
> generated two binaries (queue0 and queue1) using that nfqnl_test.c 
> sample code. These binaries are working as per expected behaviour
> in case of 10G Ethernet but with 40G Ethernet only one queue is
> receiving network traffic.
> 
> I am not able to understand why only one queue is receiving
> network traffic in case of 40G Ethernet whereas same network
> traffic is being distributed in both the queues with 10G Ethernet.
> 
> Machine configuration for 40G Ethernet:-
> 
> kernel -: 2.6.32-431.el6.x86_64
> 
> libmnl-1.0.3-4.el6.x86_64
> 
> libnfnetlink-1.0.1-1.el6.x86_64
> 
> libnetfilter_queue-1.0.2-1.el6.x86_64
> 
> Command used for iptables:-
> 
> iptables -A INPUT –i eth4 -j NFQUEUE --queue-balance 0:1
> 
> 
> Output:-
> 
> [varun@exp2 ~]$ ./queue0
> 
> opening library handle
> 
> unbinding existing nf_queue handler for AF_INET (if any)
> 
> binding nfnetlink_queue as nf_queue handler for AF_INET
> 
> binding this socket to queue '0'
> 
> setting copy_packet mode
> 
> pkt received
> 
> queue0 hw_protocol=0x0800 hook=1 id=0
> hw_src_addr=fc:4d:d4:d3:7f:73 indev=2 payload_len=40
> 
> entering callback
> 
> pkt received
> 
> queue0 hw_protocol=0x0800 hook=1 id=1
> hw_src_addr=fc:4d:d4:d3:7f:73 indev=2 payload_len=40
> 
> entering callback
> 
> pkt received
> 
> queue0 hw_protocol=0x0800 hook=1 id=2
> hw_src_addr=fc:4d:d4:d3:7f:73 indev=2 payload_len=40
> 
> entering callback
> 
> pkt received
> 
> queue0 hw_protocol=0x0800 hook=1 id=3
> hw_src_addr=fc:4d:d4:f1:e1:5f indev=2 payload_len=78
> 
> entering callback
> 
> 
> 
> [varun@exp2 ~]$ ./queue1
> 
> opening library handle
> 
> unbinding existing nf_queue handler for AF_INET (if any)
> 
> binding nfnetlink_queue as nf_queue handler for AF_INET
> 
> binding this socket to queue '1'
> 
> setting copy_packet mode
> 
> 
> 
> 
> Please let me know if more information is required.
> 
> Regards Varun -- To unsubscribe from this list: send the line
> "unsubscribe netfilter" in the body of a message to
> majordomo@vger.kernel.org More majordomo info at
> http://vger.kernel.org/majordomo-info.html
> 

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