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| There is a new mailing list (mailto:hostap@lists.ssh.com) available for discussion on the HostApMode drivers. You can subscribe by sending mail to this address mailto:hostap-subscribe@lists.ssh.com | There is a new [mailto:hostap@lists.ssh.com mailing list] available for discussion on the HostApMode drivers. You can [mailto:hostap-subscribe@lists.ssh.com subscribe] by sending mail and archives of the list are also [http://www.epitest.fi/hostap/ available]. |
HostApMode is a special mode present only in Intersil's Prism2Card which enables a PcmciaCard to act as a true AccessPoint (eg. BssMode or InfrastructureMode) without requiring special firmware.
JouniMalinen wrote Linux drivers which utilize this feature which people are using to build LinuxAccessPoints.
The homepage for this software is:
http://people.ssh.com/jkm/Prism2 (used to be: http://194.241.248.126/Prism2/ and http://www.epitest.fi/Prism2/)
The announcement of his work this work was made (I think) first here:
There is a new [mailto:hostap@lists.ssh.com mailing list] available for discussion on the HostApMode drivers. You can [mailto:hostap-subscribe@lists.ssh.com subscribe] by sending mail and archives of the list are also [http://www.epitest.fi/hostap/ available].
Just a few notes from reading comments in the code...
There is a PRISM2_MONITOR directive that enables a netlink socket for dumping/sniffing raw wlan frames. Will have to try this.. 
Some evidence of the driver supporting AP/AP bridging?
{{{/* allow this for (pseudo) ad-hoc style communication * between APs; originating AP removes ToDS from * unicast packets, but does not currently know how to * do it for broadcast packets (not easy to know, * whether they are to associated STAs or * not-associated APs */ FIX: this accepts unwanted broadcast frames from * other BSSes and these frames should be droped if * pseudo ad-hoc inter-AP communication is not needed */}}} There are comments that confirm an only partial support for Wireless Extensions and no support for WSPY, perhaps as related to below... Here's a clue about some limitations... I assume this functionality is standard fare in other "real" APs? He hardcodes the tx_rate to 11 Mb/s. {{{/* FIX: set tx_rate if f/w does not know how to do it; * in Host AP mode this would require keeping records for each station * about their signal-level and maximal rate, in addition, the driver * would need to try to reduce the rate when packets are lost and * increase the rate, if signal quality improves */}}}