[Oisf-users] [EXT] Re: Packet Fanout on CentOS 7?

[Peter Manev]

On Mon, Nov 18, 2019 at 2:51 PM Cloherty, Sean E <scloherty at mitre.org> wrote:
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> The NIC is a 10G dual port Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01).  The driver is ixgbe 5.6.3.  I’ve attached the output in a text file.  The script used to start it includes the following from the class  –
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I've seen similar errs in a couple of situations:
1 - when there is another Suricata running on the same interface
2 - when using XDP (hw mode) with the wrong/not correct firmware
version of the NIC

>From what I gather , it seems you don't have any the situation above
(if I am not mistaken)
Off note: For the cluster_qm part it is known that i40 can do the
symmetric hashing with the specified low entropy key  for ixgbe i am
not sure as i've seen both expected and unexpected results so ti is
something that needs to be further checked.
However there is  a bit more to that even if set up correct - it is
traffic dependent in some cases as well - it's been tracked here
https://redmine.openinfosecfoundation.org/issues/2725

I dont have that much experience with CentOS but will be curious to
see if you have similar issue with CentOS 8


> ##### NIC #####
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> ### ens1f1
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> ifconfig ens1f1 down
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> ifconfig ens1f1 up
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> /usr/sbin/ethtool -L ens1f1 combined 16
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> /usr/sbin/ethtool -K ens1f1 rxhash on
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> /usr/sbin/ethtool -K ens1f1 ntuple on
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> /usr/sbin/ethtool -X ens1f1 hkey 6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A equal 16
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> /usr/sbin/ethtool -A ens1f1 rx off
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> /usr/sbin/ethtool -C ens1f1 adaptive-rx off adaptive-tx off rx-usecs 125
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> /usr/sbin/ethtool -G ens1f1 rx 1024
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> for proto in tcp4 udp4 tcp6 udp6 ; do /usr/local/sbin/ethtool -N ens1f1 rx-flow-hash $proto sdfn ; done
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> ##### START #####
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> LD_PRELOAD="/usr/lib64/libtcmalloc_minimal.so.4" /usr/bin/suricata -c /etc/suricata/qm.yaml --af-packet=ens1f1 -vvv -D
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> From: Peter Manev <petermanev at gmail.com>
> Sent: Sunday, November 17, 2019 1:59 AM
> To: Cloherty, Sean E <scloherty at mitre.org>
> Cc: oisf-users at lists.openinfosecfoundation.org
> Subject: [EXT] Re: [Oisf-users] Packet Fanout on CentOS 7?
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> On 17 Nov 2019, at 02:46, Cloherty, Sean E <scloherty at mitre.org> wrote:
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> After taking the Advanced Deployment and Architecture class I was fired up with ideas for improvements in my own environment.  I want to use the cluster_qm mode and match worker/CPUs/RSS queues in CentOS 7.  Has anyone been able to get this working on CentOS 7 or should I start migrating to CentOS 8?  The kernel is 3.10.0-1062.4.1.el7.x86_64, running Suricata 5.0.0 and I was able to set the hash key and the hash functions correctly (I think) -
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> RSS hash key:
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> 6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a
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> RSS hash function:
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>     toeplitz: on
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>     xor: off
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>     crc32: off
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> When I start Suricata all the messages look good until it gets to AFP when it gives me the message –
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> 7/11/2019 -- 14:10:43 - <Notice> - all 16 packet processing threads, 4 management threads initialized, engine started.
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> 7/11/2019 -- 14:10:43 - <Error> - [ERRCODE: SC_ERR_AFP_CREATE(190)] - Couldn't set fanout mode, error Invalid argument
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> 7/11/2019 -- 14:10:43 - <Error> - [ERRCODE: SC_ERR_AFP_CREATE(190)] - Couldn't init AF_PACKET socket, fatal error
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> 7/11/2019 -- 14:10:43 - <Error> - [ERRCODE: SC_ERR_FATAL(171)] - thread W#01-ens1f1 failed
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> I’ve never tried it CentOS 7 but would recommend trying  8.
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> What NIC is that ? (think you mentioned Intel but wasn’t sure what driver/model)
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> Just to be in the safe side - “-T” (test) run passes ok too? (And there are no other Suri running on the same interface ?)
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> I did take a look at the test script “can-i-use-afpacket-fanout” but my sensors have no internet connection so I am not able to use it via GO. Is there another way to run this if I downloading it manually ?
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> Thanks,
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> Sean
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-- 
Regards,
Peter Manev