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<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial>Alex,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial> Look at broadcast_cb() which lock the the port->obj,
then calls add_local() which now locks port->obj prior to
__endpt_mgr_insert()....oops!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial>Looks like this patch is not valid.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial>Perhaps a comment around __endpt_mgr_insert() would clear
things up, as the caller to add_local() has already locket the port
obj.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial>stan.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=326222221-26112010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> ofw-bounces@lists.openfabrics.org
[mailto:ofw-bounces@lists.openfabrics.org] <B>On Behalf Of </B>Alex
Naslednikov<BR><B>Sent:</B> Thursday, November 25, 2010 1:54 AM<BR><B>To:</B>
ofw@lists.openfabrics.org<BR><B>Subject:</B> [ofw] [Patch][IPoIB_NDIS6_CM] Take
a lock when calling __endpt_mgr_insert ()<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=WordSection1>
<P class=MsoNormal>__endpt_mgr_insert () <SPAN style="COLOR: #1f497d">works with
CL objects like queues that are not thread-safe.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">In order to protect on these
objects, one need to take a lock<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Signed-off by: Alexander
Naslednikov (xalex at mellanox.co.il)<o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Index:
ulp/ipoib_NDIS6_CM/kernel/ipoib_port.cpp<o:p></o:p></P>
<P
class=MsoNormal>===================================================================<o:p></o:p></P>
<P class=MsoNormal>---
ulp/ipoib_NDIS6_CM/kernel/ipoib_port.cpp
(revision 2999)<o:p></o:p></P>
<P class=MsoNormal>+++
ulp/ipoib_NDIS6_CM/kernel/ipoib_port.cpp
(working copy)<o:p></o:p></P>
<P class=MsoNormal>@@ -7242,9 +7242,11 @@<o:p></o:p></P>
<P class=MsoNormal><o:p></o:p></P>
<P
class=MsoNormal>
/* __endpt_mgr_insert expects *one* reference to be held. */<o:p></o:p></P>
<P
class=MsoNormal>
cl_atomic_inc( &p_port->endpt_rdr );<o:p></o:p></P>
<P
class=MsoNormal>+
cl_obj_lock( &p_port->obj );<o:p></o:p></P>
<P
class=MsoNormal>
status = __endpt_mgr_insert( p_port,<o:p></o:p></P>
<P
class=MsoNormal>
p_port->p_adapter->params.conf_mac,<o:p></o:p></P>
<P
class=MsoNormal>
p_endpt );<o:p></o:p></P>
<P
class=MsoNormal>+
cl_obj_unlock( &p_port->obj );<o:p></o:p></P>
<P
class=MsoNormal>
cl_atomic_dec( &p_port->endpt_rdr );<o:p></o:p></P>
<P
class=MsoNormal>
if( status != IB_SUCCESS )<o:p></o:p></P>
<P
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{<o:p></o:p></P></DIV></BODY></HTML>