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From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
To: "Nelson, Shannon" <shannon.nelson@intel.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"andy.shevchenko@gmail.com" <andy.shevchenko@gmail.com>,
	sowmini.varadhan@oracle.com
Subject: Re: [PATCH v3 net] i40e: Look up MAC address in Open Firmware or IDPROM
Date: Mon, 2 Nov 2015 14:57:07 -0500	[thread overview]
Message-ID: <20151102195707.GC15009@oracle.com> (raw)
In-Reply-To: <FC41C24E35F18A40888AACA1A36F3E418AFAD398@fmsmsx115.amr.corp.intel.com>

On (11/02/15 17:26), Nelson, Shannon wrote:
> > I assume you mean .1q 
> 
> Yes, this is what I had in mind.

I dont think we're quite there yet, even without vlans.

If I turn on/off tcpdump, there's something about the way that the link
is bounced that leaves the device down while tcpdump is running. Then
after I exit tcpdump, it bounces things a few more times again, packets
flow for a brief interval, and then there's silence.

Seems like there's is a workq that results in
i40e_service_task->i40e_sync_vsi_filters that periodically resets things.

Doing 'ip link set eth0 promisc on' keeps things nice and steady.

How is this all supposed to work if I change the macaddr from /sbin/ip 
using i40e_set_mac() and then jiggle the promisc (either just the flag,
or with tcpdump)? (I cant tell because I dont have an x86 machine with 
i40e handy)

To frame the question differently, where all should I be invoking
the new i40e_macaddr_init() function from? 

--Sowmini

  reply	other threads:[~2015-11-02 19:57 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-30 15:03 [PATCH v3 net] i40e: Look up MAC address in Open Firmware or IDPROM Sowmini Varadhan
2015-10-30 18:06 ` Andy Shevchenko
2015-10-30 18:12   ` Sowmini Varadhan
2015-10-30 18:20     ` Andy Shevchenko
2015-10-30 18:28 ` Nelson, Shannon
2015-10-30 18:36   ` Sowmini Varadhan
2015-10-30 18:57     ` Nelson, Shannon
2015-10-30 19:24       ` Sowmini Varadhan
2015-10-30 22:03         ` Nelson, Shannon
2015-10-30 23:13           ` Sowmini Varadhan
2015-11-01 16:24             ` Sowmini Varadhan
2015-11-01 21:03               ` Nelson, Shannon
2015-11-02  0:07                 ` Sowmini Varadhan
2015-11-02 17:26                   ` Nelson, Shannon
2015-11-02 19:57                     ` Sowmini Varadhan [this message]
2015-11-04 19:26                       ` Sowmini Varadhan

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