Jouni Malinen jkmaline at cc.hut.fi
Thu May 22 22:55:47 EDT 2003

On Thu, May 22, 2003 at 09:17:45PM -0500, chen at engineer.com wrote:

> may i know what purpose is the "wlan0ap" interface ? 

It is used to pass IEEE 802.11 frames between the kernel driver and user
space daemon, hostapd.

> can i receive and write 802.11 frames into it ? 

You can receive management frames (IEEE 802.11 auth/assoc/etc. and IEEE
802.1X EAPOL frames) from it. In addition, you can send arbitrary IEEE
802.11 frames through it. Prism2 firmware has some limitation on what
kind of frames are really sent out, but at least Host AP driver tries to
send all frames.

> is it true that all frames going/coming out/in MUST pass thru this interface ?

No, only management frames are sent/received through it when hostapd is

Jouni Malinen                                            PGP id EFC895FA

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