<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Generator" content="Microsoft Word 12 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Please refer to my reply on your other email thread.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">John<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ptpd-bounces@lists.infradead.org [mailto:ptpd-bounces@lists.infradead.org]
<b>On Behalf Of </b>Plank, Stefan<br>
<b>Sent:</b> Tuesday, September 27, 2011 4:43 AM<br>
<b>To:</b> ptpd@lists.infradead.org<br>
<b>Subject:</b> Needing help for igb<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hello,</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:10.0pt;font-family:"Arial","sans-serif"">I have studied documentation for IEEE 1588 PTP and Intel 82576 with IGB driver.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">But I don't get HW timestamps in sending PTP packets?</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:10.0pt;font-family:"Arial","sans-serif"">I am using
</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">linux kernel 2.6.37.6 (from 2.6.30 it should work)</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">igb driver 3.2.9 (latest)</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:10.0pt;font-family:"Arial","sans-serif"">I downloaded the ptpd which works without hw timestamping very well.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">When adding hw support not this happens what I expected?</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Still working I get logs "(ptpd error) received truncated ancillary data" periodically.</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:10.0pt;font-family:"Arial","sans-serif"">As described in linux documentation following seems to be (additionally) necessary:</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">ioctl(sock,
<strong><span style="font-family:"Courier New";color:blue">SIOCSHWTSTAMP</span></strong>, &hwtstamp) with HWTSTAMP_TX_ON</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">setsockopt(sock, SOL_SOCKET,
<strong><span style="font-family:"Courier New";color:blue">SO_TIMESTAMP</span></strong>, &temp, sizeof(int))</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">so_timestamping_flags = SOF_TIMESTAMPING_TX_HARDWARE | SOF_TIMESTAMPING_RX_HARDWARE | SOF_TIMESTAMPING_SYS_HARDWARE;<br>
setsockopt(sock, SOL_SOCKET, <strong><span style="font-family:"Courier New";color:blue">SO_TIMESTAMPING</span></strong>, &so_timestamping_flags, sizeof(so_timestamping_flags))</span><span style="font-size:10.0pt"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Can you give me a hint how it works as wanted?</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Does the 82576 place the timestamps (only) in ptp packets?</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">The offset in the packets is not always the same - how is this handled?</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:10.0pt;font-family:"Arial","sans-serif"">What I tested was to zero the timestamp in the buffer before calling sendto().</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">But 82576 hasn't written to the transmitted ptp packet?</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:10.0pt;font-family:"Arial","sans-serif"">Looking forward to your answer I say thank you.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Kind regards
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Stefan Plank<br>
Development </span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Siemens Enterprise Communications GmbH & Co. KG<br>
Hofmannstr. 51<br>
80200 Munich<br>
Tel.: +49 89 7007-32410<br>
Fax: +49 89 7007-31675<br>
</span><a href="mailto:stefan.plank@siemens-enterprise.com" title="mailto:stefan.plank@siemens-enterprise.com"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">mailto:stefan.plank@siemens-enterprise.com</span></a><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Communication for the open minded<br>
</span><a href="http://www.siemens-enterprise.de/" title="http://www.siemens-enterprise.de/"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">www.siemens-enterprise.de</span></a><br>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif"">Siemens Enterprise Communications GmbH & Co. KG; Sitz der Gesellschaft: München; Registergericht: München, HRA 88546; WEEE-Reg.Nr. DE 27980375; Persönlich haftende Gesellschafterin: Siemens Enterprise
Communications Management GmbH; Geschäftsführer: Alexander Frick, Thomas Heim, Stefan Herrlich, Vera Meyer; Vorsitzender des Aufsichtsrates: Mark Stone;<br>
Sitz der Gesellschaft: München; Registergericht: München, HRB 163415<br>
<br>
Siemens Enterprise Communications GmbH & Co. KG is a Trademark Licensee of Siemens AG<br>
Wichtiger Hinweis: Diese E-Mail und etwaige Anlagen enthalten firmenvertrauliche Informationen. Sollten Sie diese E-Mail irrtümlich erhalten haben, benachrichtigen Sie uns bitte durch Antwort-Mail und löschen Sie diese E-Mail nebst Anlagen von Ihrem System.
Vielen Dank.<o:p></o:p></span></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
</div>
</div>
</body>
</html>