mirror of
https://github.com/vanhoefm/fragattacks.git
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101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/*
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* hostapd / IEEE 802.11ac VHT
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* Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of BSD license
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*
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* See README and COPYING for more details.
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*/
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#include "utils/includes.h"
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#include "utils/common.h"
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#include "common/ieee802_11_defs.h"
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#include "drivers/driver.h"
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#include "hostapd.h"
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#include "ap_config.h"
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#include "sta_info.h"
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#include "beacon.h"
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#include "ieee802_11.h"
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u8 * hostapd_eid_vht_capabilities(struct hostapd_data *hapd, u8 *eid)
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{
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struct ieee80211_vht_capabilities *cap;
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u8 *pos = eid;
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if (!hapd->iconf->ieee80211ac || !hapd->iface->current_mode ||
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hapd->conf->disable_11ac)
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return eid;
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*pos++ = WLAN_EID_VHT_CAP;
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*pos++ = sizeof(*cap);
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cap = (struct ieee80211_vht_capabilities *) pos;
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os_memset(cap, 0, sizeof(*cap));
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cap->vht_capabilities_info = host_to_le32(
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hapd->iface->current_mode->vht_capab);
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/* Supported MCS set comes from hw */
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os_memcpy(cap->vht_supported_mcs_set,
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hapd->iface->current_mode->vht_mcs_set, 8);
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pos += sizeof(*cap);
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return pos;
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}
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u8 * hostapd_eid_vht_operation(struct hostapd_data *hapd, u8 *eid)
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{
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struct ieee80211_vht_operation *oper;
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u8 *pos = eid;
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if (!hapd->iconf->ieee80211ac || hapd->conf->disable_11ac)
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return eid;
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*pos++ = WLAN_EID_VHT_OPERATION;
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*pos++ = sizeof(*oper);
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oper = (struct ieee80211_vht_operation *) pos;
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os_memset(oper, 0, sizeof(*oper));
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oper->vht_op_info_chwidth = hapd->iconf->vht_oper_chwidth;
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/* VHT Basic MCS set comes from hw */
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/* Hard code 1 stream, MCS0-7 is a min Basic VHT MCS rates */
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oper->vht_basic_mcs_set = host_to_le16(0xfffc);
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pos += sizeof(*oper);
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return pos;
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}
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u16 copy_sta_vht_capab(struct hostapd_data *hapd, struct sta_info *sta,
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const u8 *vht_capab, size_t vht_capab_len)
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{
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/* Disable VHT caps for STAs associated to no-VHT BSSes. */
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if (!vht_capab ||
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vht_capab_len < sizeof(struct ieee80211_vht_capabilities) ||
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hapd->conf->disable_11ac) {
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sta->flags &= ~WLAN_STA_VHT;
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os_free(sta->vht_capabilities);
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sta->vht_capabilities = NULL;
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return WLAN_STATUS_SUCCESS;
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}
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if (sta->vht_capabilities == NULL) {
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sta->vht_capabilities =
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os_zalloc(sizeof(struct ieee80211_vht_capabilities));
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if (sta->vht_capabilities == NULL)
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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sta->flags |= WLAN_STA_VHT;
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os_memcpy(sta->vht_capabilities, vht_capab,
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sizeof(struct ieee80211_vht_capabilities));
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return WLAN_STATUS_SUCCESS;
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}
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