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<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>Hi</span></font><font face=Arial><span lang=EN-US
style='font-family:Arial'>¡¦</span></font><font face=±¼¸²><span lang=EN-US
style='font-family:±¼¸²'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>I</span></font><font face=Arial><span lang=EN-US
style='font-family:Arial'>¡¯</span></font><font face=±¼¸²><span lang=EN-US
style='font-family:±¼¸²'>m trying to develop GW application using WinPCap
library.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>My target pc has two Ethernet interfaces.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>What I want to do now is just forward every packet in one
interface to the other.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>Thus I capture every packet (but, I do not use promiscuous
option) and send it by opposite interface.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>The problem is in performance.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>The local network in my environment has 100Mbps speed, but my
application just shows 60Kbps in FTP application</span></font><font face=Arial><span
lang=EN-US style='font-family:Arial'>¡¦</span></font><font face=±¼¸²><span
lang=EN-US style='font-family:±¼¸²'> ^^<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>I use two window threads for each interface and pcap_loop() for
packet capturing and sending.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>Are there any comments for increasing performance?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>Cholmin Kim<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:country-region w:st="on"><st1:place w:st="on"><font
size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;font-family:±¼¸²'>Korea</span></font></st1:place></st1:country-region><font
face=±¼¸²><span lang=EN-US style='font-family:±¼¸²'>.<o:p></o:p></span></font></p>
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