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<TITLE>RE: [openib-general] Re: IPoIB question/problem</TITLE>
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<P><FONT SIZE=2>Roland,</FONT>
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<P><FONT SIZE=2>The issue came up during gen1 IPoIB debug. </FONT>
<BR><FONT SIZE=2>As far as I was able to track it, header_cache_update() was not called</FONT>
<BR><FONT SIZE=2>upon MAC address update, so I had to add an explicit check </FONT>
<BR><FONT SIZE=2>in the IPoIB code verifying the data in neighbor->ha and in path->... are consistent </FONT>
<BR><FONT SIZE=2>and if not - invalidating the old AH and starting get_path_record flow.</FONT>
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<P><FONT SIZE=2>Boris Shpolyansky</FONT>
<BR><FONT SIZE=2>Application Engineer</FONT>
<BR><FONT SIZE=2>Mellanox Technologies Inc.</FONT>
<BR><FONT SIZE=2>2900 Stender Way</FONT>
<BR><FONT SIZE=2>Santa Clara, CA 95054</FONT>
<BR><FONT SIZE=2>Tel.: (408) 916 0014</FONT>
<BR><FONT SIZE=2>Fax: (408) 970 3403</FONT>
<BR><FONT SIZE=2>Cell: (408) 834 9365</FONT>
<BR><FONT SIZE=2>www.mellanox.com</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Roland Dreier [<A HREF="mailto:rolandd@cisco.com">mailto:rolandd@cisco.com</A>] </FONT>
<BR><FONT SIZE=2>Sent: Monday, November 07, 2005 9:35 AM</FONT>
<BR><FONT SIZE=2>To: Michael S. Tsirkin</FONT>
<BR><FONT SIZE=2>Cc: openib-general@openib.org</FONT>
<BR><FONT SIZE=2>Subject: [openib-general] Re: IPoIB question/problem</FONT>
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<P><FONT SIZE=2> Michael> Does this analysis make sense? If yes, what would be the</FONT>
<BR><FONT SIZE=2> Michael> best way to fix this?</FONT>
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<P><FONT SIZE=2>I'm not sure if this could really happen or not. But could we add a</FONT>
<BR><FONT SIZE=2>header_cache_update() method to the IPoIB struct net_device to handle this situation if it does occur?</FONT>
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<P><FONT SIZE=2> - R.</FONT>
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