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<p class="MsoNormal"><span style="font-family:Arial">Hi Andreas,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Andreas Schultz <aschultz@tpip.net><br>
<b>Date: </b>Monday, March 27, 2017 at 1:30 AM<br>
<b>To: </b>Jiannan Ouyang <ouyangj@fb.com><br>
<b>Cc: </b>osmocom-net-gprs <osmocom-net-gprs@lists.osmocom.org>, Anoop Singh Tomar <anooptomar@fb.com>, Amar Padmanabhan <amarpadmanabhan@fb.com><br>
<b>Subject: </b>Re: allow gtp tunnel updating in libgtpnl: gtp_add_tunnel()<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:Arial;color:black">> The correct repository for libgtnl is: http://git.osmocom.org/libgtpnl/, my github tree of osmo-ggsn is outdated and shouldn't
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black">> be used.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black">Thanks for letting me know.<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-align:justify"><span style="font-family:Arial;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="text-align:justify"><span style="font-family:Arial;color:black">> A gtp_update_tunnel that supports changing any the hash keys would have to set the NLM_F_REPLACE flag.
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-family:Arial;color:black">> That is currently not supported by the kernel implementation and libgtnl is not setting that flag.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-family:Arial;color:black">> I found an old, untested, and most likely incomplete version of an update pdp implementation for the
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-family:Arial;color:black">> kernel in my repository at https://github.com/RoadRunnr/osmo-ggsn/commit/398199135a6009dcbd421d7a330a5af2d36dda8d<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:Arial;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:Arial;color:black">> You are welcome to forward port, fix, test, and submit that to the kernel.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black">This reference implementation is very helpful, thank you!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:black">-Jiannan</span><span style="font-family:Helvetica;color:black"><o:p></o:p></span></p>
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