contrib/wpa/src/ap/ieee802_11_he.c

   1 /*
   2  * hostapd / IEEE 802.11ax HE
   3  * Copyright (c) 2016-2017, Qualcomm Atheros, Inc.
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "common/ieee802_11_defs.h"
  13 #include "hostapd.h"
  14 #include "ap_config.h"
  15 #include "beacon.h"
  16 #include "ieee802_11.h"
  17 #include "dfs.h"
  18
  19 u8 * hostapd_eid_he_capab(struct hostapd_data *hapd, u8 *eid)
  20 {
  21         struct ieee80211_he_capabilities *cap;
  22         u8 *pos = eid;
  23
  24         if (!hapd->iface->current_mode)
  25                 return eid;
  26
  27         *pos++ = WLAN_EID_EXTENSION;
  28         *pos++ = 1 + sizeof(struct ieee80211_he_capabilities);
  29         *pos++ = WLAN_EID_EXT_HE_CAPABILITIES;
  30
  31         cap = (struct ieee80211_he_capabilities *) pos;
  32         os_memset(cap, 0, sizeof(*cap));
  33
  34         if (hapd->iface->conf->he_phy_capab.he_su_beamformer)
  35                 cap->he_phy_capab_info[HE_PHYCAP_SU_BEAMFORMER_CAPAB_IDX] |=
  36                         HE_PHYCAP_SU_BEAMFORMER_CAPAB;
  37
  38         if (hapd->iface->conf->he_phy_capab.he_su_beamformee)
  39                 cap->he_phy_capab_info[HE_PHYCAP_SU_BEAMFORMEE_CAPAB_IDX] |=
  40                         HE_PHYCAP_SU_BEAMFORMEE_CAPAB;
  41
  42         if (hapd->iface->conf->he_phy_capab.he_mu_beamformer)
  43                 cap->he_phy_capab_info[HE_PHYCAP_MU_BEAMFORMER_CAPAB_IDX] |=
  44                         HE_PHYCAP_MU_BEAMFORMER_CAPAB;
  45
  46         pos += sizeof(*cap);
  47
  48         return pos;
  49 }
  50
  51
  52 u8 * hostapd_eid_he_operation(struct hostapd_data *hapd, u8 *eid)
  53 {
  54         struct ieee80211_he_operation *oper;
  55         u8 *pos = eid;
  56
  57         if (!hapd->iface->current_mode)
  58                 return eid;
  59
  60         *pos++ = WLAN_EID_EXTENSION;
  61         *pos++ = 1 + sizeof(struct ieee80211_he_operation);
  62         *pos++ = WLAN_EID_EXT_HE_OPERATION;
  63
  64         oper = (struct ieee80211_he_operation *) pos;
  65         os_memset(oper, 0, sizeof(*oper));
  66
  67         if (hapd->iface->conf->he_op.he_bss_color)
  68                 oper->he_oper_params |= hapd->iface->conf->he_op.he_bss_color;
  69
  70         if (hapd->iface->conf->he_op.he_default_pe_duration)
  71                 oper->he_oper_params |=
  72                         (hapd->iface->conf->he_op.he_default_pe_duration <<
  73                          HE_OPERATION_DFLT_PE_DURATION_OFFSET);
  74
  75         if (hapd->iface->conf->he_op.he_twt_required)
  76                 oper->he_oper_params |= HE_OPERATION_TWT_REQUIRED;
  77
  78         if (hapd->iface->conf->he_op.he_rts_threshold)
  79                 oper->he_oper_params |=
  80                         (hapd->iface->conf->he_op.he_rts_threshold <<
  81                          HE_OPERATION_RTS_THRESHOLD_OFFSET);
  82
  83         /* TODO: conditional MaxBSSID Indicator subfield */
  84
  85         pos += sizeof(*oper);
  86
  87         return pos;
  88 }
  89
  90
  91 u8 * hostapd_eid_he_mu_edca_parameter_set(struct hostapd_data *hapd, u8 *eid)
  92 {
  93         struct ieee80211_he_mu_edca_parameter_set *edca;
  94         u8 *pos;
  95         size_t i;
  96
  97         pos = (u8 *) &hapd->iface->conf->he_mu_edca;
  98         for (i = 0; i < sizeof(*edca); i++) {
  99                 if (pos[i])
 100                         break;
 101         }
 102         if (i == sizeof(*edca))
 103                 return eid; /* no MU EDCA Parameters configured */
 104
 105         pos = eid;
 106         *pos++ = WLAN_EID_EXTENSION;
 107         *pos++ = 1 + sizeof(*edca);
 108         *pos++ = WLAN_EID_EXT_HE_MU_EDCA_PARAMS;
 109
 110         edca = (struct ieee80211_he_mu_edca_parameter_set *) pos;
 111         os_memcpy(edca, &hapd->iface->conf->he_mu_edca, sizeof(*edca));
 112
 113         wpa_hexdump(MSG_DEBUG, "HE: MU EDCA Parameter Set element",
 114                     pos, sizeof(*edca));
 115
 116         pos += sizeof(*edca);
 117
 118         return pos;
 119 }