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List:       openvswitch-discuss
Subject:    [ovs-discuss] ping and flow
From:       jpettit () nicira ! com (Justin Pettit)
Date:       2013-12-26 16:39:29
Message-ID: 242244C5-0D24-42BD-8172-7F95A0BCF51D () nicira ! com
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Yes, your understanding is correct. 

--Justin


> On Dec 26, 2013, at 9:37 AM, kevin parker <kevin.parker092 at gmail.com> wrote:
> 
> Hi i am trying to understand this better 
> 
> from 192.168.3.3 
> 
> ping 192.168.3.4 -c 10
> 
> 10 packets transmitted, 10 received, 0% packet loss, time 9003ms
> 
> ovs-dpctl dump-flows
> 
> in_port(3),eth(src=52:b9:12:5f:87:b1,dst=ea:91:10:fc:7a:bf),eth_type(0x0800),ipv4(src=192.168.3.4,dst=192.168.3.3,proto=1,tos=0,ttl=64,frag=no),icmp(type=0,code=0), \
> packets:9, bytes:882, used:0.860s, actions:3 
> in_port(5),eth(src=ea:91:10:fc:7a:bf,dst=52:b9:12:5f:87:b1),eth_type(0x0800),ipv4(src=192.168.3.3,dst=192.168.3.4,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0), \
> packets:9, bytes:882, used:0.860s, actions:5 
> Why am i not able to see all 10 packets in the flow,flow is showing 9 and no packet \
> got lost.  
> I guess it has something to do with first packet for which there was no active \
> flow. 
> My understanding was that first packet will be send to user space which generates \
> flow and send to kernel space and all the subsequent packet will flow through data \
> path with out going through user space,but doesn't above shows that user space \
> generates flow and also handles first packet...can some body please confirm this 
> _______________________________________________
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> discuss at openvswitch.org
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