Did any one get the chance to have a look at the patch?<br><br>I am really concerned with the tight coupling of representing each single IOC as a single PDO.<br><br>Regards<br>Deepak<br><br><br><br><div class="gmail_quote">
On Wed, Jan 21, 2009 at 5:55 PM, Deepak Gupta <span dir="ltr"><<a href="mailto:deepak.gupta@qlogic.com" target="_blank">deepak.gupta@qlogic.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">All,<br><br>Based on James patch of creating user defined devices tied to local HCA ports, I have created a first draft patch attached herewith <br>
to allow "ibiou" to create user defined devices which will associate with IOC paths.<br>
<br>This patch does the following:-<br><br>Now ibiou will not create child devices on it's own when it discovers a IOC.<br>Instead it will create child devices only when it is instructed to do so.<br>For the sake of this patch, currently it uses name/description of the devices hard coded into INF file of ibiou driver.<br>
Later on we can implement a IOCTL to pass this information to the driver (more below)<br><br>It will make a listing of devices to be created in it's DriverEntry routine.<br>When it will get IOC_PNP_ADD pnp events, it will check in device list prepare<br>
earlier. If it finds device(s) in it's list which corresponds to the new IOC<br>discovered then it will create those child devices and a similar mechanism<br>will happen when ibiou will get IOC_PNP_ADD event.<br><br>
This more of a initial patch for giving an insight into what we want to achieve.<br>
On a longer run we are thinking of providing a IOCTL support in ibiou driver for creating child devices (like vnic/srp/etc) and<br>differnet vendor specific applications can create those devices and have their driver loaded on top of that.<br>
<br>Following is the advantage of this functionality:-<br><br> Earlier there was only one device created per IOC on host side.<br> Now there can be multiple devices on host side per IOC as configured in the registry.<br>
It will be many to one function i.e there can be many devices on host side which will target to the same IOC.<br> It will be like having different sessions with the same IOC.<br><br>Please have a look at it and let me know of your comments/suggestions/feeback.<br>
<br>NOTE--> Device descriptions in the INF file of this patch creates devices that corresponds to a IOC PATH (CAGUID and IOCGUID).<br> Those values are local to my machine and you should change it according to your fabric.<br>
<br>Regards<br><font color="#888888">Deepak<br><br><br><br></font><div class="gmail_quote"><div><div></div><div>On Tue, Jan 20, 2009 at 1:37 AM, James Yang <span dir="ltr"><<a href="mailto:jyang@xsigo.com" target="_blank">jyang@xsigo.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div>
<div link="blue" vlink="blue" lang="EN-US">
<div>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">The proposal is to use registry key to
define vendor devices, and the registry key is global to the driver. The assumption
is that multiple HCA cards will have the same vendor defined devices. It cannot
support one HCA with vendor-A device, and the other HCA with vendor-B device,
in the same system. At default all hcas will have IPoIB as child devices.</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Thanks,</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">James</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div>
<div style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">
<hr align="center" size="2" width="100%">
</span></font></div>
<p><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;"> Leonid Keller
[mailto:<a href="mailto:leonid@mellanox.co.il" target="_blank">leonid@mellanox.co.il</a>] <br>
<b><span style="font-weight: bold;">Sent:</span></b> Sunday, January 18, 2009
5:57 AM<br>
<b><span style="font-weight: bold;">To:</span></b> James Yang; Deepak Gupta; Fab
Tillier<div><div></div><div><br>
<b><span style="font-weight: bold;">Cc:</span></b> <a href="mailto:ofw@lists.openfabrics.org" target="_blank">ofw@lists.openfabrics.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b> RE: [ofw] Expose a vendor
defined device in ibbus?</div></div></span></font></p>
</div><div><div></div><div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<div>
<p><font color="blue" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: blue;">After first look: why did you put the list
of the created devices into Globals (and not, say, FDO) ?</span></font></p>
</div>
<div>
<p><font color="blue" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: blue;">How it will work for multi-home machine
? (several HCA cards)</span></font></p>
</div>
<div>
<p><font color="blue" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: blue;">Would anybode like to check it for various
partition keys ?</span></font></p>
</div>
<blockquote style="border-style: none none none solid; border-color: -moz-use-text-color -moz-use-text-color -moz-use-text-color blue; border-width: medium medium medium 1.5pt; margin: 5pt 0in 5pt 3.75pt; padding: 0in 0in 0in 4pt;">
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<div style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">
<hr align="center" size="2" width="100%">
</span></font></div>
<p style="margin-bottom: 12pt;"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;">
<a href="mailto:ofw-bounces@lists.openfabrics.org" target="_blank">ofw-bounces@lists.openfabrics.org</a> [mailto:<a href="mailto:ofw-bounces@lists.openfabrics.org" target="_blank">ofw-bounces@lists.openfabrics.org</a>] <b><span style="font-weight: bold;">On Behalf Of </span></b>James Yang<br>
<b><span style="font-weight: bold;">Sent:</span></b> Tuesday, January 06, 2009
10:11 PM<br>
<b><span style="font-weight: bold;">To:</span></b> Deepak Gupta; Fab Tillier<br>
<b><span style="font-weight: bold;">Cc:</span></b> <a href="mailto:ofw@lists.openfabrics.org" target="_blank">ofw@lists.openfabrics.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b> RE: [ofw] Expose a vendor
defined device in ibbus?</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Hi,</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Please review the patch to create user
defined devices by reading from registry. By default there is only one IpoIB
device enabled in mlx4_hca.inx file. This patch will only work for ConnectX.</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">The paritition key if set to default to
FFFF, I didn't test on other value. And the Ioctl part to add partition
key may also need to be verified.</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Thanks,</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">James</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div>
<div style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">
<hr align="center" size="2" width="100%">
</span></font></div>
<p><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;">
<a href="mailto:mailmeatdkg@gmail.com" target="_blank">mailmeatdkg@gmail.com</a> [mailto:<a href="mailto:mailmeatdkg@gmail.com" target="_blank">mailmeatdkg@gmail.com</a>] <b><span style="font-weight: bold;">On Behalf Of </span></b>Deepak Gupta<br>
<b><span style="font-weight: bold;">Sent:</span></b> Monday, January 05, 2009
10:51 PM<br>
<b><span style="font-weight: bold;">To:</span></b> Fab Tillier<br>
<b><span style="font-weight: bold;">Cc:</span></b> Tzachi Dar; James Yang;
<a href="mailto:ofw@lists.openfabrics.org" target="_blank">ofw@lists.openfabrics.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b> Re: [ofw] Expose a vendor
defined device in ibbus?</span></font></p>
</div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">Have a gr8 New Year to
all the members!!!.<br>
<br>
Do you we any updates on "<span><span>vendor defined
device in ibbus"?</span></span><br>
<br>
<span>I wanted to create multiple vnic interfaces irrespective of
number of reachable IOCs.</span><br>
<br>
<span>Currently I am creating vnic child devices on
"root" bus.</span><br>
<span>Inside VNIC driver, I am looking for arrival
GUID_IB_AL_INTERFACE and hence contacting the IBAL.</span><br>
<span>But since vnic devices are root enumerated, VNIC driver gets
loaded very earlier in boot phase (Before "Extended Base" group to
which IB Stack drivers belong) and hence VNIC device interfaces are not getting
initialized properly.</span><br>
<br>
<span>If we are providing a vendor defined device functionality in
ibbus in near future, then it would be worth for me to wait for it.</span><br>
<br>
<span>Can any one please comment on this.</span><br>
<br>
<span>Regards</span><br>
<span>Deepak</span><br>
<br>
<span></span></span></font></p>
<div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;">On Mon, Dec 22, 2008 at 1:12 PM, Deepak Gupta <<a href="mailto:deepak.gupta@qlogic.com" target="_blank">deepak.gupta@qlogic.com</a>> wrote:</span></font></p>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;">All,<br>
<br>
I came across one more question in my mind which are I think is not clear to me
after reading the whole thread.<br>
<br>
In new design being discussed:- <br>
Are we making sure that we can have more than one child devices configured for
the same IOC.<br>
Currently, there is one child device created per IOC discovered.<br>
<br>
Having more than one child device configured for same IOC is a requirement if a
user wants two different ULP interfaces to be created on host side.<br>
Consider a case in which a host is connected to a single IOC and IOC is
connected to a ethernet network via switch.<br>
If there are two different IP subnets then there is a requirement of two
different Ethernet interfaces on the host side too.<br>
<br>
Please let me know if you need more clarification of my question.<br>
<br>
Regards<br>
<font color="#888888"><span style="color: rgb(136, 136, 136);">Deepak</span></font></span></font></p>
<div>
<div>
<p style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;">On Sat, Dec 20, 2008 at 2:19 PM, Deepak Gupta <<a href="mailto:deepak.gupta@qlogic.com" target="_blank">deepak.gupta@qlogic.com</a>>
wrote:</span></font></p>
<p style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">Please see below.<br>
<br>
Regards<br>
Deepak</span></font></p>
<div>
<div>
<div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;">On Sat, Dec 20, 2008 at 12:42 AM, Fab Tillier <<a href="mailto:ftillier@windows.microsoft.com" target="_blank">ftillier@windows.microsoft.com</a>>
wrote:</span></font></p>
<div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;">> On Wed, Dec 17, 2008 at 11:43 PM, Fab Tillier<br>
> <<a href="mailto:ftillier@windows.microsoft.com" target="_blank">ftillier@windows.microsoft.com</a>>
wrote:</span></font></p>
</div>
<div>
<p style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">>> Are there other
properties that I have missed that are needed?<br>
><br>
> We need a way in which devices created should be configured for<br>
> failovers ( ULPs like VNIC, SRP need more configurable failovers).<br>
> Looking at IBAL's code it create the devices based on the reachable<br>
> IOC's and thus failover's are possible across the HCA/ports and not<br>
> across two different IOCs.<br>
> Users can have a case in which two different IOCs connected to same<br>
> physical network/storage (redundancy is provided for high availability)<br>
> and want a failover across the IOCs.</span></font></p>
</div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;">This would be done via LBFO for network devices, and MPIO for storage
devices. I think having the bus driver report a single IOC that really
maps to two IOCs on the fabric is asking for management problems.
Further, LBFO/MPIO can provide failover between different device types,
so the failover devices don't have to be identical HW.</span></font></p>
</div>
</div>
<div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"><br>
I don't know about how MPIO works. But for LBFO, BundleID param will have
to be included in extended params then so that user gets the freedom of
bundling different failover configurations.<br>
</span></font></p>
</div>
<blockquote style="border-style: none none none solid; border-color: -moz-use-text-color -moz-use-text-color -moz-use-text-color rgb(204, 204, 204); border-width: medium medium medium 1pt; margin: 5pt 0in 5pt 4.8pt; padding: 0in 0in 0in 6pt;">
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"><br>
<font color="#888888"><span style="color: rgb(136, 136, 136);"><br>
-Fab</span></font></span></font></p>
</blockquote>
</div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
</div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
</div>
</div>
</div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
</blockquote>
</div></div></div>
</div>
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