netdev - Re: [Intel-wired-lan] i40e error handling LLDP messages from Arista switches

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Date:	Tue, 19 Apr 2016 14:10:19 -0400
From:	Jeremy Ashton <jeremy.ashton@...pify.com>
To:	"Parikh, Neerav" <neerav.parikh@...el.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
Subject: Re: [Intel-wired-lan] i40e error handling LLDP messages from Arista switches

So, what commands exactly are you looking to have run?  Would packet
capture of the lldp traffic help?

On Tue, Apr 19, 2016 at 1:53 PM, Parikh, Neerav <neerav.parikh@...el.com> wrote:
> Resending as the original email was sent in HTLM format and hence my reply went in that format
> as well; which got rejected by netdev mailer.
>
>> -----Original Message-----
>> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@...ts.osuosl.org] On Behalf Of Parikh, Neerav
>> Sent: Tuesday, April 19, 2016 10:45 AM
>> To: Jeremy Ashton <jeremy.ashton@...pify.com>
>> Cc: netdev@...r.kernel.org; intel-wired-lan@...ts.osuosl.org
>> Subject: Re: [Intel-wired-lan] i40e error handling LLDP messages from Arista switches
>>
>> > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@...ts.osuosl.org] On Behalf Of Jeremy Ashton
>> > Sent: Tuesday, April 19, 2016 10:26 AM
>> > Cc: netdev@...r.kernel.org; intel-wired-lan@...ts.osuosl.org
>> > Subject: [Intel-wired-lan] i40e error handling LLDP messages from Arista switches
>> >
>> > I have been trying to get pf_ring with zc running on ubuntu 14.04.  The thread can be found here:
>> >
>> > https://github.com/ntop/PF_RING/issues/81
>> >
>> > Unfortunately it seems there is a bug in i40e which is carried into the code base for i40e_zc.
>> >
>> > $ modinfo i40e
>> > filename:       /lib/modules/3.19.0-58-generic/kernel/drivers/net/ethernet/intel/i40e/i40e.ko
>> > version:        1.2.2-k
>> > license:        GPL
>> > description:    Intel(R) Ethernet Connection XL710 Network Driver
>> > author:         Intel Corporation, <e1000-devel@...ts.sourceforge.net>
>> > srcversion:     E3DEEE00F49BBFBB8FF33A7
>> > alias:          pci:v00008086d00001586sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001585sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001584sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001583sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001581sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001580sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d0000157Fsv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001574sv*sd*bc*sc*i*
>> > alias:          pci:v00008086d00001572sv*sd*bc*sc*i*
>> > depends:        ptp,vxlan
>> > intree:         Y
>> > vermagic:       3.19.0-58-generic SMP mod_unload modversions
>> > signer:         Magrathea: Glacier signing key
>> > sig_key:        DE:B3:43:0A:26:E6:7D:3D:3B:54:B9:DD:13:25:B3:3A:46:B2:F2:DD
>> > sig_hashalgo:   sha512
>> > part:           debug:Debug level (0=none,...,16=all) (int)
>> >
>> >
>> > I wonder if someone might offer some insight as to the next steps to debug/resolve this.
>> >
>> > Cheers.
>> >
>> > Can you send us the dmesg output after running i40e debugfs commands
>> > viz. “dump port”, “llpd get local” , “lldp get remote”, for the port that is showing
>> > this behavior? Also, do you happen to know what is the Arista side configuration?
>> > This will help us debug better.
>> >
>> > Thanks,
>> > Neerav