Hi Raja
Below are the inline answers for your queries..
Are you seeing any checksum errors go up on the receiver of the ping (using
netstat)?
The Below fields are incresing at the receiver side when ping is initiated
from the compute node running contrail-vrouter-agent..
netstat -s
Ip:
4666082 total packets received
4051 with invalid headers
2 with invalid addresses
22 forwarded
0 incoming packets discarded
4558747 incoming packets delivered
4493351 requests sent out
12 outgoing packets dropped
13 fragments dropped after timeout
42 reassemblies required
7 packets reassembled ok
13 packet reassembles failed
Icmp:
17279 ICMP messages received
32 input ICMP message failed.
ICMP input histogram:
destination unreachable: 2068
timeout in transit: 14
echo requests: 13570
echo replies: 1627
17190 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 1776
redirect: 12
echo request: 1832
echo replies: 13570
IcmpMsg:
InType0: 1627
InType3: 2068
InType8: 13570
InType11: 14
OutType0: 13570
OutType3: 1776
OutType5: 12
OutType8: 1832
Tcp:
251330 active connections openings
127809 passive connection openings
118574 failed connection attempts
170 connection resets received
24 connections established
3254207 segments received
3777193 segments send out
11826 segments retransmited
144 bad segments received.
The above coloured field is increasing at the receiver only after ping is
initiated from the compute node.
Not having the dropstats command on powerpc ubuntu.
When we try to run droptstat command, we got the below prints
#############################################
dropstats
Usage: dropstats [--help]
Usage: dropstats [--core|-c] <core number>
--core <core number> Show statistics for a specified CPU core
###################################################
Then when we analyse the dropstats.c program, we found that it is getting
error at the main function itself.
The variable "opt" is not getting any valid values, so the switch case is
going to the default case and it prints the above prints..
When I print the opt value, it is giving some garbage value itseems,
##################################################
dropstats
OPT VAlue : �
Usage: dropstats [--help]
Usage: dropstats [--core|-c] <core number>
--core <core number> Show statistics for a specified CPU core
##################################################
Please help us regarding this.
Thanks
On Wed, Sep 30, 2015 at 11:24 AM, Rajagopalan Sivaramakrishnan <
[email protected]> wrote:
>
> >Not having the dropstats command on powerpc ubuntu.
>
> This should be built when you build vrouter utils. If you have “rt” and
> “nh” utilities working, this should work too.
>
> Are you seeing any checksum errors go up on the receiver of the ping
> (using netstat)?
>
> Please check if any counters are going up corresponding to the reception
> of the pings. The absolute values of the counters are not useful.
>
> netstat -s
> Ip:
> 621360 total packets received
> 1722 with invalid headers
> 2 with invalid addresses
> 1 forwarded
> 0 incoming packets discarded
> 596580 incoming packets delivered
> 490572 requests sent out
> 1 outgoing packets dropped
> 3 fragments dropped after timeout
> 8 reassemblies required
> 1 packets reassembled ok
> 3 packet reassembles failed
> Icmp:
> 5542 ICMP messages received
> 10 input ICMP message failed.
> ICMP input histogram:
> destination unreachable: 180
> timeout in transit: 12
> echo requests: 3730
> echo replies: 1620
> 5717 ICMP messages sent
> 0 ICMP messages failed
> ICMP output histogram:
> destination unreachable: 180
> redirect: 1
> echo request: 1806
> echo replies: 3730
> IcmpMsg:
> InType0: 1620
> InType3: 180
> InType8: 3730
> InType11: 12
> OutType0: 3730
> OutType3: 180
> OutType5: 1
> OutType8: 1806
> Tcp:
> 46413 active connections openings
> 23428 passive connection openings
> 21350 failed connection attempts
> 45 connection resets received
> 42 connections established
> 434130 segments received
> 431999 segments send out
> 938 segments retransmited
> 32 bad segments received.
> 22332 resets sent
> Udp:
> 182146 packets received
> 21 packets to unknown port received.
> 0 packet receive errors
> 51965 packets sent
> UdpLite:
> TcpExt:
> 24030 TCP sockets finished time wait in fast timer
> 2774 delayed acks sent
> Quick ack mode was activated 154 times
> 36 packets directly queued to recvmsg prequeue.
> 2176 bytes directly received in process context from prequeue
> 68980 packet headers predicted
> 4 packets header predicted and directly queued to user
> 81153 acknowledgments not containing data payload received
> 50692 predicted acknowledgments
> 20 times recovered from packet loss by selective acknowledgements
> Detected reordering 2 times using SACK
> Detected reordering 6 times using time stamp
> 7 congestion windows fully recovered without slow start
> 59 congestion windows partially recovered using Hoe heuristic
> 1 congestion windows recovered without slow start by DSACK
> 309 congestion windows recovered without slow start after partial ack
> 20 fast retransmits
> 11 forward retransmits
> 11 retransmits in slow start
> 584 other TCP timeouts
> 1 SACK retransmits failed
> 212 DSACKs sent for old packets
> 29 DSACKs sent for out of order packets
> 240 DSACKs received
> 272 connections reset due to unexpected data
> 22 connections reset due to early user close
> 30 connections aborted due to timeout
> TCPDSACKIgnoredOld: 1
> TCPDSACKIgnoredNoUndo: 50
> TCPSackShiftFallback: 198
> IPReversePathFilter: 120
> TCPRcvCoalesce: 15109
> TCPChallengeACK: 37
> TCPSYNChallenge: 32
> IpExt:
> InMcastPkts: 57521
> OutMcastPkts: 4516
> InBcastPkts: 54973
> OutBcastPkts: 521
> InOctets: 128287765
> OutOctets: 58739537
> InMcastOctets: 14558645
> OutMcastOctets: 372894
> InBcastOctets: 7484935
> OutBcastOctets: 92175
>
>
>
>
> On Wed, Sep 30, 2015 at 11:08 AM, Rajagopalan Sivaramakrishnan <
> [email protected]> wrote:
>
>> Hi Abhishek,
>> Are you still able to ping when the agent is not running? Did you try
>> using “dropstats" to see if there are any drops inside vrouter?
>> Are you seeing any checksum errors go up on the receiver of the ping
>> (using netstat)?
>>
>> Raja
>>
>> From: Dev <[email protected]> on behalf of abhishek
>> jain <[email protected]>
>> Date: Tuesday, September 29, 2015 at 10:50 AM
>> To: "[email protected]" <[email protected]>, "
>> [email protected]" <[email protected]>
>> Subject: Re: [opencontrail-dev] Checksum offload error with
>> contrail-vrouter-agent running on compute node
>>
>> CCing Omartsyniuk
>>
>> On Tue, Sep 29, 2015 at 7:36 PM, abhishek jain <[email protected]>
>> wrote:
>>
>>> Hi Team
>>>
>>>
>>> We are getting checksum error from the powerpc ubuntu 32 bit as compute
>>> node when the contrail-voruter-agent userspace agent is running after ping
>>> is initiated from the compute node.Please find the attached screanshot for
>>> the same.We have disabled checksum offload at both eth0 as well as vhost0
>>> on the powerpc ubuntu.
>>>
>>>
>>>
>>> *ethtool -K eth0 tx off ethtool -k vhost0 | grep checksum *
>>> rx-checksumming: off [fixed]
>>> tx-checksumming: off
>>> tx-checksum-ipv4: off [fixed]
>>> tx-checksum-ip-generic: off [fixed]
>>> tx-checksum-ipv6: off [fixed]
>>> tx-checksum-fcoe-crc: off [fixed]
>>> tx-checksum-sctp: off [fixed]
>>>
>>>
>>> However still we are not able ping the outside world with
>>> contrail-vrouter-agent binary running and we are facing same ipv4 checksum
>>> offload incorrect error when we capture packets after ping is initiated
>>> from the compute node.
>>>
>>> Do we need to make changes in contrail-vrouter-agent code regarding this?
>>>
>>>
>>> Please help regarding this.
>>> Thanks
>>>
>>
>>
>
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