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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=793160714-04012008>And what happens when RNIC on two sides have a
different upper limits?</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=793160714-04012008>Specifically, if requestor asks for ORD which is bigger
than responder can handle?</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=793160714-04012008>Is it user responsibility to pass ORD request out of
bound to responder and</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=793160714-04012008>if responder can not satisfy it then reject the
request?</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=793160714-04012008>Thanks,</SPAN></FONT></DIV>
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<P class=MsoNormal align=left><SPAN class=SpellE><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Arkady</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <SPAN
class=SpellE>Kanevsky</SPAN><SPAN
style="mso-tab-count: 2">
</SPAN>email: <A
href="mailto:arkady@netapp.com">arkady@netapp.com</A><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Network
Appliance Inc.<SPAN
style="mso-tab-count: 2">
</SPAN><SPAN class=GramE>phone</SPAN>: 781-768-5395<o:p></o:p></SPAN></P>
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Trapelo Rd. - Suite 16.</SPAN></st1:address></st1:Street><SPAN
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Fax:
781-895-1195<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Waltham, MA
02451
central phone: 781-768-5300</SPAN></P></DIV>
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<BLOCKQUOTE
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<FONT face=Tahoma size=2><B>From:</B> Steve Wise
[mailto:swise@opengridcomputing.com] <BR><B>Sent:</B> Thursday, January 03,
2008 9:42 PM<BR><B>To:</B> Sean Hefty<BR><B>Cc:</B> OpenFabrics
General<BR><B>Subject:</B> [ofa-general] Re: setting iWarp IRD and
ORD<BR></FONT><BR></DIV>
<DIV></DIV><BR><BR>Sean Hefty wrote:
<BLOCKQUOTE cite=mid:000301c84e6d$c0904020$ff0da8c0@amr.corp.intel.com
type="cite">
<BLOCKQUOTE type="cite"><PRE wrap="">What exactly are you fixing?
</PRE></BLOCKQUOTE><PRE wrap=""><!---->
It may help to look at the patch for the librdmacm that I just posted. The
problem that was seen was that uDAPL set IRD/ORD to 16 in the connection
request, but the passive side could only support 4. The rdma_cm was supposed to
use the lower value (provided by the user when calling rdma_accept) when
transitioning the QP, but instead used the value from the request.
Since iWarp connect request doesn't carry the IRD/ORD and always uses the value
provided by the user through rdma_connect or rdma_accept, it doesn't sound like
it would hit this problem. I just don't quite follow why
iwcm_init_qp_rts_attr() doesn't set the QP attribute mask for IRD/ORD, or how
the QP is programmed with these values.
</PRE></BLOCKQUOTE>Perhaps this is a bug. But the chelsio driver just
saves off the ord/ird from the connection parameters and then programs the qp
with these values when the qp is associated with the connection (just after
the connection goes into rdma mode)...<BR><BR>
<BLOCKQUOTE cite=mid:000301c84e6d$c0904020$ff0da8c0@amr.corp.intel.com
type="cite"><PRE wrap="">- Sean
</PRE></BLOCKQUOTE><BR><BR></BLOCKQUOTE></BODY></HTML>