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<DIV><SPAN class=215103915-19052008><FONT face=Arial color=#0000ff size=2>BUG
#<A href="https://bugs.openfabrics.org/show_bug.cgi?id=1037"><FONT
face="Times New Roman" size=3>1037</FONT></A><FONT face="Times New Roman"
color=#000000 size=3> </FONT></FONT></SPAN></DIV>
<DIV><SPAN class=215103915-19052008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=215103915-19052008><FONT face=Arial color=#0000ff size=2><A
href="https://bugs.openfabrics.org/show_bug.cgi?id=1037">https://bugs.openfabrics.org/show_bug.cgi?id=1037</A></FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> Smith, Stan
[mailto:stan.smith@intel.com] <BR><B>Sent:</B> Friday, May 16, 2008 5:10
PM<BR><B>To:</B> Sufficool, Stanley; Fab Tillier;
ofw@lists.openfabrics.org<BR><B>Subject:</B> RE: [ofw] RE: SRP Target
Disconnect still hangs IPoIB<BR><BR></FONT></DIV>
<DIV><SPAN class=898490900-17052008><FONT face=Arial color=#0000ff size=2>What
is the buzilla bug ID for this issue?</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> ofw-bounces@lists.openfabrics.org
[mailto:ofw-bounces@lists.openfabrics.org] <B>On Behalf Of </B>Sufficool,
Stanley<BR><B>Sent:</B> Friday, May 16, 2008 4:57 PM<BR><B>To:</B> Fab
Tillier; ofw@lists.openfabrics.org<BR><B>Subject:</B> [ofw] RE: SRP Target
Disconnect still hangs IPoIB<BR></FONT><BR></DIV>
<DIV></DIV><SPAN class=837354423-16052008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN>
<DIV></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=837354423-16052008>This
is only occurring if the initiator has an active
disk connected to the target. </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=837354423-16052008>The
servers not connected to disks at the target do not have this issue. I
can load/unload connect/disconnect and the initiator driver loads/unloads
accordingly.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=837354423-16052008>Not
sure if this helps.</SPAN></FONT><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=837354423-16052008></SPAN></FONT></FONT></FONT></FONT> </DIV>
<DIV><FONT face=Tahoma><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=837354423-16052008> </SPAN></FONT></FONT>-----Original
Message-----<BR><B>From:</B> Fab Tillier
[mailto:ftillier@windows.microsoft.com] <BR><B>Sent:</B> Friday, May 16, 2008
4:24 PM<BR><B>To:</B> Sufficool, Stanley;
ofw@lists.openfabrics.org<BR><B>Subject:</B> RE: SRP Target Disconnect still
hangs IPoIB<BR><BR></DIV></FONT></FONT>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Probably
a deadlock stalling IBAL’s PnP event callback thread (there’s only one
system wide). IPoIB depends on the PnP event callback to do all its
resource creation/destruction because it generally gets called at
DISPATCH_LEVEL and there’s very little it can do with the HCA driver.
The HCA driver’s design requires blocking for all verb operations despite
the hardware processing commands asynchronously and notifying of their
completions form the DPC.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">-Fab<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
ofw-bounces@lists.openfabrics.org [mailto:ofw-bounces@lists.openfabrics.org]
<B>On Behalf Of </B>Sufficool, Stanley<BR><B>Sent:</B> Friday, May 16, 2008
4:16 PM<BR><B>To:</B> ofw@lists.openfabrics.org<BR><B>Subject:</B> [ofw] SRP
Target Disconnect still hangs IPoIB<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Seems that RC4
has the same issue with SRP hanging other IPoIB when the target quits
without the initiator first performing a clean "Eject" of the target
device.</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Reproduced by:
</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Start target
(OFED Gen2 SRPT) </SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Start WinIB
initiators</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Unload target
driver (rmmod ib_srpt)</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">WinIB initiators
IPoIB complains "LAN Conn.. Network Cable Is
Unplugged"</SPAN><o:p></o:p></P></DIV></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>