> > inside .connect() if I check sme->crypto.cipher_suite for
> >
> > WLAN_CIPHER_SUITE_WEP40
> > WLAN_CIPHER_SUITE_WEP104
> > WLAN_CIPHER_SUITE_TKIP
> > WLAN_CIPHER_SUITE_CCMP
> > 0 (meaning no encryption/WEP obfuscation)
>
> But why would you look at that? It sounds like you want
sme->privacy to
> know whether to select an AP that advertises privacy or not?
Libertas' firmware doesn't have a capability of to "select an AP
that advertises privacy". So in practice it's wpa_supplicant that
selects this, because pure iw/cfg80211 can't select an AP for
me.
My connect method does this:
lbs_cfg_connect:
if (sme->bssid set) {
# I need a full cfg80211_bss entry, because I can only
# associate to a specific bss via CMD_802_11_ASSOCIATE
# and I need
# bss->capability
# bss->bssid
# bss->get_ie(WLAN_EID_SSID)
# bss->channel
# bss->rates
bss = cfg80211_get_bss()
} else {
error_out
}
clear_local_wep_key_copy
switch (sme->cryto.cipher_group) {
case WEP40, WEP104:
store_key_keyidx_locally
set_wep_keys
enable_wep_in_lbs_mac
disable_rsn
break;
case no_encryption:
case WPA, WPA2:
remove_wep_keys
disable_wep_in_lbs_mac
clear_wpa_wpa2_unicast_multicast_key
unless no_encryption:
enable_rsn
}
build_and_submit_set_authtype_command_for_the_firmware
build_and_submit_associate_command_for_the_firmware
You see, nowhere do I actually need sme->privacy, all info is in
sme->crypto.cipher_group.
However, this current setup makes "iw abc connect SSID"
non-working with libertas. It would work with libertas if I
would use the .auth/.assoc API, because then net/wireless/sme.c
would scan for me. But in the .connect API case, it doesn't do
this.
But information I get in the .connect() call aren't sufficuent
for the Libertas firmware interface, I need more data, which I
can get from a cfg80211_bss entry.
One possiblity is that net/wireless/sme.c get's more general and
does scan in the .connect() case, too.
Or I could substitute the "error_out" with a local scan, and then
select the "best" AP from the bss list. I fear however that such
a selection function might already be somewhere inside
net/wireless/*.c, I'll need to search for that.
--
http://www.holgerschurig.de
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