On Sat, Nov 01, 2008 at 04:31:26PM +0200, Kalle Valo wrote: > Now that AP mode works in mac80211 I want to use it to test Michael > MIC failures in a wlan driver. Any recommendations, or tips, how to > easily create them with mac80211 and hostapd? There used to be test code for this in mac80211 that allowed testing of more or less all TKIP error cases (MIC error on TX/RX, ICV error on TX/RX, replay), but it looks like that has been mostly "cleaned up" be removal.. You might be able to find it from some old version.. Anyway, if you just want to test Michael MIC error processing on a client, force mac80211 to do software encryption and modify ieee80211_tx_h_michael_mic_add() in net/mac80211/wpa.c to insert an incorrect MIC (e.g., add mic[0]++; after the michael_mic() call). You will probably need a trigger mechanisms (say debugfs write) to enable this for a single TX frame in order to allow proper client testing. Once I have some time, I could take a look at recovering the old design with a debugfs interface (it used to use private ioctl). It is useful to be able to test this type of things during development/system validation. -- Jouni Malinen PGP id EFC895FA -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
