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HS 2.0: Add mechanism for disabling DGAF

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disable_dgaf=1 in hostapd.conf can now be used to disable downstream
group-addressed forwarding (DGAF). In this configuration, a unique
GTK (and IGTK) is provided to each STA in the BSS to make sure the
keys do not match and no STA can forge group-addressed frames.

An additional mechanism in the AP needs to be provided to handle some
group-addressed frames, e.g., by converting DHCP packets to unicast
IEEE 802.11 frames regardless of their destination IP address and by
providing Proxy ARP functionality.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2011-10-18 12:38:32 +03:00 • committed by Jouni Malinen
parent 19a8ad9944
commit 8342185012
9 changed files with 55 additions and 4 deletions
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3
src/ap/beacon.c
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@ -703,6 +703,9 @@ void ieee802_11_set_beacon(struct hostapd_data *hapd)
params.hessid = hapd->conf->hessid;
params.access_network_type = hapd->conf->access_network_type;
params.ap_max_inactivity = hapd->conf->ap_max_inactivity;
#ifdef CONFIG_HS20
params.disable_dgaf = hapd->conf->disable_dgaf;
#endif /* CONFIG_HS20 */
if (hostapd_drv_set_ap(hapd, &params))
wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);