Date: Wed, 09 Mar 2005 19:52:53 -0800 From: Sam Leffler <sam@errno.com> To: Arvind Srinivasan <arvind@celar.us> Cc: freebsd-mobile@freebsd.org Subject: Re: WPA on laptops running FreeBSD 5.3 (hacked a custom driver but having trouble) Message-ID: <422FC495.5020006@errno.com> In-Reply-To: <422F768D.50203@celar.us> References: <c91ae148050308234173362dda@mail.gmail.com> <422F34CF.4020206@errno.com> <422F768D.50203@celar.us>
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Arvind Srinivasan wrote: > Sam: > I implemented it in if_ndis in the kernel because I wanted to get it > going in 5.3 for just NDIS and WPA without having to require that a > supplicant be running - to emulate the behavior of the utilities under > Windows. > The setting of keys is working, as well as association with SSIDs that > are known to be running WPA. The privacy bit is also working. I did not > implement anything relating to TKIP countermeasures, which may be why I > am unable to exchange any packets subsequently. > Is there way to debug what's going on when I try dhclient on the interface? > Thanks. I think you need to learn more about how WPA works. Your approach will not work unless the drivers you are working with include a supplicant--which they do not (so far as I understand). Sam > > Sam Leffler wrote: > >> Arvind Srinivasan wrote: >> >>> I hacked a custom ndis driver to use WPA-PSK. The driver pretends to >>> be WEP (so that I can continue to use the existing API's) but under >>> the covers it actually calls the ndis wrapper with WPA OIDs instead of >>> the WEP OIDs. >>> >>> The essential changes I made are a call to OID_802_11_ADD_KEY instead >>> of OID_802_11_ADD_WEP, and NDIS_80211_WEPSTAT_ENC2ENABLED instead of >>> NDIS_80211_WEPSTAT_ENABLED. >>> All the changes are in if_ndis.c:ndis_setstate_80211. >> >> >> >> I don't understand why didn't use the existing API's that work with >> wpa_supplicant? >> >>> >>> I've tried two different cards: Linksys WPC54G and Dell WLAN 1350. >>> Both cards associate fine, but do not get much further than that. I am >>> unable to get an IP address from the NETGEAR router via DHCP, even >>> though the link is up. >>> Note that both cards work fine with the same router in Windows..... >>> >>> Is there anything else I need to do besides provide the right key and >>> encryption method in ndis_setstate_80211? >> >> >> >> Do your drivers implement a WPA supplicant in the kernel? If not you >> need a supplicant to use WPA in station mode. wpa_supplicant is the >> right program for this and to use it with FreeBSD you need to >> implement ioctl's to get+set keys, set the optional information >> element with negotiated WPA algorithms, and implement the scan results >> interface so wpa_supplicant can identify WPA-capable AP's (and >> probably a couple of other minor bits like enable the privacy bit and >> handle TKIP countermeasures). I believe there are OID's that map to >> all these mechanisms as I looked at the M$ spec when I designed the >> ioctls. >> >> Sam >> >> > > > _______________________________________________ > freebsd-mobile@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-mobile > To unsubscribe, send any mail to "freebsd-mobile-unsubscribe@freebsd.org" > >
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