ieee802_11_vht.c revision 04949598a23f501be6eec21697465fd46a28840a 
1/*
2 * hostapd / IEEE 802.11ac VHT
3 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of BSD license
7 *
8 * See README and COPYING for more details.
9 */
10
11#include "utils/includes.h"
12
13#include "utils/common.h"
14#include "common/ieee802_11_defs.h"
15#include "drivers/driver.h"
16#include "hostapd.h"
17#include "ap_config.h"
18#include "sta_info.h"
19#include "beacon.h"
20#include "ieee802_11.h"
21
22
23u8 * hostapd_eid_vht_capabilities(struct hostapd_data *hapd, u8 *eid)
24{
25	struct ieee80211_vht_capabilities *cap;
26	u8 *pos = eid;
27
28	if (!hapd->iconf->ieee80211ac || !hapd->iface->current_mode ||
29	    hapd->conf->disable_11ac)
30		return eid;
31
32	*pos++ = WLAN_EID_VHT_CAP;
33	*pos++ = sizeof(*cap);
34
35	cap = (struct ieee80211_vht_capabilities *) pos;
36	os_memset(cap, 0, sizeof(*cap));
37	cap->vht_capabilities_info = host_to_le32(
38		hapd->iface->current_mode->vht_capab);
39
40	/* Supported MCS set comes from hw */
41	os_memcpy(cap->vht_supported_mcs_set,
42	          hapd->iface->current_mode->vht_mcs_set, 8);
43
44	pos += sizeof(*cap);
45
46	return pos;
47}
48
49
50u8 * hostapd_eid_vht_operation(struct hostapd_data *hapd, u8 *eid)
51{
52	struct ieee80211_vht_operation *oper;
53	u8 *pos = eid;
54
55	if (!hapd->iconf->ieee80211ac || hapd->conf->disable_11ac)
56		return eid;
57
58	*pos++ = WLAN_EID_VHT_OPERATION;
59	*pos++ = sizeof(*oper);
60
61	oper = (struct ieee80211_vht_operation *) pos;
62	os_memset(oper, 0, sizeof(*oper));
63
64	oper->vht_op_info_chwidth = hapd->iconf->vht_oper_chwidth;
65
66	/* VHT Basic MCS set comes from hw */
67	/* Hard code 1 stream, MCS0-7 is a min Basic VHT MCS rates */
68	oper->vht_basic_mcs_set = 0xfffc;
69	pos += sizeof(*oper);
70
71	return pos;
72}
73