From: Mike Christie <michaelc@cs.wisc.edu>
To: Or Gerlitz <or.gerlitz@gmail.com>
Cc: vikas.chaudhary@qlogic.com, jbottomley@parallels.com,
linux-scsi@vger.kernel.org, ravi.anand@qlogic.com,
lalit.chandivade@qlogic.com
Subject: Re: [PATCH 09/11] iscsi_transport: Added Ping support
Date: Tue, 21 Feb 2012 16:58:34 -0600 [thread overview]
Message-ID: <4F44219A.6070207@cs.wisc.edu> (raw)
In-Reply-To: <CAJZOPZKo5O8GMO9dz09UAvX8gHd5bT-Y2MdRkckh9dv2Q=m1jA@mail.gmail.com>
On 02/21/2012 04:39 PM, Or Gerlitz wrote:
> On Wed, Feb 22, 2012 at 12:33 AM, Mike Christie <michaelc@cs.wisc.edu> wrote:
>> This is network based. ICMP pings. The stuff we have today is iscsi
>> based pings. So you can do some basic network diag type of stuff.
>
> So what's wrong with plain ICMP pings... or is this is for
> cards/drivers which don't expose plain network interface to the
> kernel?
Yeah, the latter. There is a network driver for the card, but the
networking stack is completely different for the 2 functions. The
network driver is a normal old net device driver. Then for the iscsi
function they basically have a complete network stack in fw. The
networking settings for the 2 functions are going to be separate. So the
iscsi function port has a different ip and MAC than the network driver
one. The ip could then be on different subnets, different vlans, etc. So
you might not be able to reach the target from the normal network driver
net device.
next prev parent reply other threads:[~2012-02-21 22:58 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-13 13:00 [PATCH 00/11] qla4xxx: Update for scsi-misc vikas.chaudhary
2012-02-13 13:00 ` [PATCH 01/11] qla4xxx: Remove unused code vikas.chaudhary
2012-02-13 13:00 ` [PATCH 02/11] qla4xxx: Fix un-necessary delay on invalid DDB vikas.chaudhary
2012-02-13 13:00 ` [PATCH 03/11] qla4xxx: Fix verify boot idx correctly vikas.chaudhary
2012-02-13 13:00 ` [PATCH 04/11] qla4xxx: Modified debug log messages for boot info vikas.chaudhary
2012-02-13 13:00 ` [PATCH 05/11] qla4xxx: Remove un-necessary print statment vikas.chaudhary
2012-02-13 13:00 ` [PATCH 06/11] qla4xxx: Proper detection of firmware abort error code for ISP82xx vikas.chaudhary
2012-02-13 13:00 ` [PATCH 07/11] scsi_transport_iscsi: added support for host event vikas.chaudhary
2012-02-13 13:00 ` [PATCH 09/11] iscsi_transport: Added Ping support vikas.chaudhary
2012-02-21 21:55 ` Or Gerlitz
2012-02-21 22:33 ` Mike Christie
2012-02-21 22:39 ` Or Gerlitz
2012-02-21 22:54 ` Ravi Anand
2012-02-21 22:58 ` Mike Christie [this message]
2012-02-13 13:00 ` [PATCH 10/11] qla4xxx: Added ping support vikas.chaudhary
2012-03-06 2:49 ` Mike Christie
2012-03-06 12:26 ` Vikas Chaudhary
2012-02-13 13:00 ` [PATCH 11/11] qla4xxx: Update driver version to 5.02.00-k14 vikas.chaudhary
2012-02-15 7:00 ` [PATCH 00/11] qla4xxx: Update for scsi-misc Mike Christie
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