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<DIV><FONT color=#000080></FONT> </DIV>
<DIV><FONT color=#000080>Thanks very much. </FONT></DIV>
<DIV><FONT color=#000080 size=2></FONT><FONT
face="Times New Roman"></FONT> </DIV>
<DIV><FONT color=#000080 size=2></FONT><FONT
face="Times New Roman"></FONT> </DIV>
<DIV><FONT color=#c0c0c0 size=2 face="Times New Roman">2011-12-18
</FONT></DIV><FONT color=#000080 size=2 face="Times New Roman">
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<DIV><FONT color=#c0c0c0 size=2 face="Times New Roman"><SPAN>
<DIV>
<DIV>Thanks,</DIV>
<DIV>Kevin </DIV></DIV></SPAN></FONT></DIV><FONT face="Times New Roman">
<HR color=#b5c4df SIZE=1>
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<DIV><FONT size=2><FONT face="Times New Roman"><STRONG>From: </STRONG>
Jouni Malinen </FONT></FONT></DIV>
<DIV><FONT size=2><FONT face="Times New Roman"><STRONG>Date: </STRONG>
2011-12-18 22:24:45 </FONT></FONT></DIV>
<DIV><FONT size=2><FONT face="Times New Roman"><STRONG>To: </STRONG> hostap
</FONT></FONT></DIV>
<DIV><FONT size=2><FONT face="Times New Roman"><STRONG>Cc: </STRONG>
</FONT></FONT></DIV>
<DIV><FONT size=2><FONT face="Times New Roman"><STRONG>Subject: </STRONG>
Re: p2p start listen </FONT></FONT></DIV>
<DIV><FONT size=2></FONT><FONT face="Times New Roman"> </FONT></DIV>
<DIV><FONT face="Times New Roman"><FONT size=2>
<DIV>On Sun, Dec 18, 2011 at 08:55:41PM +0800, Huijun Gan wrote:</DIV>
<DIV>> Thanks. My fault that expressed the opposite meaning. I wonder why</DIV>
<DIV>> wpa_drv_probe_req_report() is called first.</DIV>
<DIV>> </DIV>
<DIV>> My understanding on remain-on-channel is to ensure that the device is</DIV>
<DIV>> on the indicated channel to receive the probe req frames.</DIV>
<DIV></DIV>
<DIV>Well, these should really be done in an atomic operation, so I don't</DIV>
<DIV>really consider either sequence to be better than the reverse order.</DIV>
<DIV></DIV>
<DIV>> And besides, for OFFCHANNEL_TX driver, after sending action frame</DIV>
<DIV>> (like GO neg req) out on peer's listen or operating channel, how does</DIV>
<DIV>> our own driver/device know how long it should stay on this channel, to</DIV>
<DIV>> guerantee peer's resp? There is a wait_time parameter when sending</DIV>
<DIV>> action frame, I think this is to ensure TX success (the max time</DIV>
<DIV>> waiting for TX_STATUS, right?).</DIV>
<DIV></DIV>
<DIV>This depends on the driver capabilities. You can either depend on the</DIV>
<DIV>remain-on-channel operations or use the wait_time to offload this to the</DIV>
<DIV>driver/firmware. In the offload case, the wait_time parameter is the</DIV>
<DIV>time that the device needs to wait for the response.</DIV>
<DIV></DIV>
<DIV>-- </DIV>
<DIV>Jouni Malinen PGP id EFC895FA</DIV>
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