fragattacks/src/ap/hs20.c
Jouni Malinen 8342185012 HS 2.0: Add mechanism for disabling DGAF
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>
2012-07-30 18:23:52 +03:00

32 lines
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C

/*
* Hotspot 2.0 AP ANQP processing
* Copyright (c) 2009, Atheros Communications, Inc.
* Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "common/ieee802_11_defs.h"
#include "hostapd.h"
#include "ap_config.h"
#include "hs20.h"
u8 * hostapd_eid_hs20_indication(struct hostapd_data *hapd, u8 *eid)
{
if (!hapd->conf->hs20)
return eid;
*eid++ = WLAN_EID_VENDOR_SPECIFIC;
*eid++ = 5;
WPA_PUT_BE24(eid, OUI_WFA);
eid += 3;
*eid++ = HS20_INDICATION_OUI_TYPE;
/* Hotspot Configuration: DGAF Enabled */
*eid++ = hapd->conf->disable_dgaf ? 0x01 : 0x00;
return eid;
}