<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40">

<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">


<meta name=ProgId content=Word.Document>
<meta name=Generator content="Microsoft Word 10">
<meta name=Originator content="Microsoft Word 10">
<link rel=File-List href="cid:filelist.xml@01C30044.3231B380">
<!--[if gte mso 9]><xml>
 <o:OfficeDocumentSettings>
  <o:DoNotRelyOnCSS/>
 </o:OfficeDocumentSettings>
</xml><![endif]--><!--[if gte mso 9]><xml>
 <w:WordDocument>
  <w:SpellingState>Clean</w:SpellingState>
  <w:DocumentKind>DocumentEmail</w:DocumentKind>
  <w:EnvelopeVis/>
  <w:Compatibility>
   <w:BreakWrappedTables/>
   <w:SnapToGridInCell/>
   <w:WrapTextWithPunct/>
   <w:UseAsianBreakRules/>
  </w:Compatibility>
  <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel>
 </w:WordDocument>
</xml><![endif]-->
<style>
<!--
 /* Style Definitions */
 p.MsoNormal, li.MsoNormal, div.MsoNormal
        {mso-style-parent:"";
        margin:0in;
        margin-bottom:.0001pt;
        mso-pagination:widow-orphan;
        font-size:12.0pt;
        font-family:"Times New Roman";
        mso-fareast-font-family:"Times New Roman";}
a:link, span.MsoHyperlink
        {color:blue;
        text-decoration:underline;
        text-underline:single;}
a:visited, span.MsoHyperlinkFollowed
        {color:purple;
        text-decoration:underline;
        text-underline:single;}
span.EmailStyle17
        {mso-style-type:personal-compose;
        mso-style-noshow:yes;
        mso-ansi-font-size:10.0pt;
        mso-bidi-font-size:10.0pt;
        font-family:Arial;
        mso-ascii-font-family:Arial;
        mso-hansi-font-family:Arial;
        mso-bidi-font-family:Arial;
        color:windowtext;}
span.SpellE
        {mso-style-name:"";
        mso-spl-e:yes;}
@page Section1
        {size:8.5in 11.0in;
        margin:1.0in 1.25in 1.0in 1.25in;
        mso-header-margin:.5in;
        mso-footer-margin:.5in;
        mso-paper-source:0;}
div.Section1
        {page:Section1;}
-->
</style>
<!--[if gte mso 10]>
<style>
 /* Style Definitions */ 
 table.MsoNormalTable
        {mso-style-name:"Table Normal";
        mso-tstyle-rowband-size:0;
        mso-tstyle-colband-size:0;
        mso-style-noshow:yes;
        mso-style-parent:"";
        mso-padding-alt:0in 5.4pt 0in 5.4pt;
        mso-para-margin:0in;
        mso-para-margin-bottom:.0001pt;
        mso-pagination:widow-orphan;
        font-size:10.0pt;
        font-family:"Times New Roman";}
</style>
<![endif]-->
</head>

<body lang=EN-US link=blue vlink=purple style='tab-interval:.5in'>

<div class=Section1>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello, <span style='mso-spacerun:yes'>&nbsp;</span>I am
unable to send packets from cards using the <span class=SpellE>hostap</span>
driver using raw sockets.<span style='mso-spacerun:yes'>&nbsp;&nbsp; </span><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am the author of some management software we use for <span
class=SpellE>linux</span> wireless router monitoring/control, and I use raw
sockets so I can still talk to my <span class=SpellE>userspace</span> software
when the <span class=SpellE>ip</span> or routing information is wrong.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Currently we use <span class=SpellE>cisco</span> cards.<span
style='mso-spacerun:yes'>&nbsp; </span>The <span class=SpellE>aironet</span>
driver does allow for sending packets with raw sockets.<span
style='mso-spacerun:yes'>&nbsp;&nbsp; </span>I'd love to use the <span
class=SpellE>hostap</span> stuff though, then I can do away with my
bridges/access points.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I send the packet over the raw socket and all looks well, I
get no error messages and can even see the packet when in <span class=SpellE>tcpdump</span>
packet captures running on the <span class=SpellE>transmiting</span>
router.<span style='mso-spacerun:yes'>&nbsp; </span>However, no other machines
on the network can detect the packet.<span style='mso-spacerun:yes'>&nbsp;
</span>I can even see the packet when I "dump <span class=SpellE>tx</span>
frame headers" using <span class=SpellE>iwpriv</span>.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Is there something I can tweak or even re-write to make this
work?<span style='mso-spacerun:yes'>&nbsp; </span>I'm a competent kernel
developer, but I've never spent any time with network drivers.<span
style='mso-spacerun:yes'>&nbsp; </span>If anybody could point me in the right
direction I'd appreciate it.<span style='mso-spacerun:yes'>&nbsp;
</span>Well, right now I'm going to go and try and see what happens to a
packet after the "dump <span class=SpellE>tx</span> frame headers"
and see what might be dropping them.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Also something you might want to know, I think the driver
drops any packets coming from the Ethernet broadcast address.<o:p></o:p></span></font></p>

</div>

</body>

</html>