| /* |
| * 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)); |
| |
| /* |
| * center freq = 5 GHz + (5 * index) |
| * So index 42 gives center freq 5.210 GHz |
| * which is channel 42 in 5G band |
| */ |
| oper->vht_op_info_chan_center_freq_seg0_idx = |
| hapd->iconf->vht_oper_centr_freq_seg0_idx; |
| oper->vht_op_info_chan_center_freq_seg1_idx = |
| hapd->iconf->vht_oper_centr_freq_seg1_idx; |
| |
| 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; |
| } |
| |
| |
| u16 copy_sta_vht_capab(struct hostapd_data *hapd, struct sta_info *sta, |
| const u8 *vht_capab, size_t vht_capab_len) |
| { |
| /* Disable VHT caps for STAs associated to no-VHT BSSes. */ |
| if (!vht_capab || |
| vht_capab_len < sizeof(struct ieee80211_vht_capabilities) || |
| hapd->conf->disable_11ac) { |
| sta->flags &= ~WLAN_STA_VHT; |
| os_free(sta->vht_capabilities); |
| sta->vht_capabilities = NULL; |
| return WLAN_STATUS_SUCCESS; |
| } |
| |
| if (sta->vht_capabilities == NULL) { |
| sta->vht_capabilities = |
| os_zalloc(sizeof(struct ieee80211_vht_capabilities)); |
| if (sta->vht_capabilities == NULL) |
| return WLAN_STATUS_UNSPECIFIED_FAILURE; |
| } |
| |
| sta->flags |= WLAN_STA_VHT; |
| os_memcpy(sta->vht_capabilities, vht_capab, |
| sizeof(struct ieee80211_vht_capabilities)); |
| |
| return WLAN_STATUS_SUCCESS; |
| } |