2 * hostapd / IEEE 802.11ac VHT
3 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of BSD license
8 * See README and COPYING for more details.
11 #include "utils/includes.h"
13 #include "utils/common.h"
14 #include "common/ieee802_11_defs.h"
15 #include "drivers/driver.h"
17 #include "ap_config.h"
20 #include "ieee802_11.h"
23 u8 * hostapd_eid_vht_capabilities(struct hostapd_data *hapd, u8 *eid)
25 struct ieee80211_vht_capabilities *cap;
28 if (!hapd->iconf->ieee80211ac || !hapd->iface->current_mode ||
29 hapd->conf->disable_11ac)
32 *pos++ = WLAN_EID_VHT_CAP;
33 *pos++ = sizeof(*cap);
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);
40 /* Supported MCS set comes from hw */
41 os_memcpy(cap->vht_supported_mcs_set,
42 hapd->iface->current_mode->vht_mcs_set, 8);
50 u8 * hostapd_eid_vht_operation(struct hostapd_data *hapd, u8 *eid)
52 struct ieee80211_vht_operation *oper;
55 if (!hapd->iconf->ieee80211ac || hapd->conf->disable_11ac)
58 *pos++ = WLAN_EID_VHT_OPERATION;
59 *pos++ = sizeof(*oper);
61 oper = (struct ieee80211_vht_operation *) pos;
62 os_memset(oper, 0, sizeof(*oper));
65 * center freq = 5 GHz + (5 * index)
66 * So index 42 gives center freq 5.210 GHz
67 * which is channel 42 in 5G band
69 oper->vht_op_info_chan_center_freq_seg0_idx =
70 hapd->iconf->vht_oper_centr_freq_seg0_idx;
71 oper->vht_op_info_chan_center_freq_seg1_idx =
72 hapd->iconf->vht_oper_centr_freq_seg1_idx;
74 oper->vht_op_info_chwidth = hapd->iconf->vht_oper_chwidth;
76 /* VHT Basic MCS set comes from hw */
77 /* Hard code 1 stream, MCS0-7 is a min Basic VHT MCS rates */
78 oper->vht_basic_mcs_set = host_to_le16(0xfffc);
85 u16 copy_sta_vht_capab(struct hostapd_data *hapd, struct sta_info *sta,
86 const u8 *vht_capab, size_t vht_capab_len)
88 /* Disable VHT caps for STAs associated to no-VHT BSSes. */
90 vht_capab_len < sizeof(struct ieee80211_vht_capabilities) ||
91 hapd->conf->disable_11ac) {
92 sta->flags &= ~WLAN_STA_VHT;
93 os_free(sta->vht_capabilities);
94 sta->vht_capabilities = NULL;
95 return WLAN_STATUS_SUCCESS;
98 if (sta->vht_capabilities == NULL) {
99 sta->vht_capabilities =
100 os_zalloc(sizeof(struct ieee80211_vht_capabilities));
101 if (sta->vht_capabilities == NULL)
102 return WLAN_STATUS_UNSPECIFIED_FAILURE;
105 sta->flags |= WLAN_STA_VHT;
106 os_memcpy(sta->vht_capabilities, vht_capab,
107 sizeof(struct ieee80211_vht_capabilities));
109 return WLAN_STATUS_SUCCESS;