hostap/src/ap/ieee802_11_vht.c

/*
 * hostapd / IEEE 802.11ac VHT
 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of BSD license
 *
 * See README and COPYING for more details.
 */

#include "utils/includes.h"

#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "drivers/driver.h"
#include "hostapd.h"
#include "ap_config.h"
#include "sta_info.h"
#include "beacon.h"
#include "ieee802_11.h"


u8 * hostapd_eid_vht_capabilities(struct hostapd_data *hapd, u8 *eid)
{
	struct ieee80211_vht_capabilities *cap;
	u8 *pos = eid;

	if (!hapd->iconf->ieee80211ac || !hapd->iface->current_mode ||
	    hapd->conf->disable_11ac)
		return eid;

	*pos++ = WLAN_EID_VHT_CAP;
	*pos++ = sizeof(*cap);

	cap = (struct ieee80211_vht_capabilities *) pos;
	os_memset(cap, 0, sizeof(*cap));
	cap->vht_capabilities_info = host_to_le32(
		hapd->iface->current_mode->vht_capab);

	/* Supported MCS set comes from hw */
	os_memcpy(cap->vht_supported_mcs_set,
	          hapd->iface->current_mode->vht_mcs_set, 8);

	pos += sizeof(*cap);

	return pos;
}


u8 * hostapd_eid_vht_operation(struct hostapd_data *hapd, u8 *eid)
{
	struct ieee80211_vht_operation *oper;
	u8 *pos = eid;

	if (!hapd->iconf->ieee80211ac || hapd->conf->disable_11ac)
		return eid;

	*pos++ = WLAN_EID_VHT_OPERATION;
	*pos++ = sizeof(*oper);

	oper = (struct ieee80211_vht_operation *) pos;
	os_memset(oper, 0, sizeof(*oper));

	oper->vht_op_info_chwidth = hapd->iconf->vht_oper_chwidth;

	/* VHT Basic MCS set comes from hw */
	/* Hard code 1 stream, MCS0-7 is a min Basic VHT MCS rates */
	oper->vht_basic_mcs_set = host_to_le16(0xfffc);
	pos += sizeof(*oper);

	return pos;
}