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hostapd/src/ap/beacon.c
Felix Fietkau b971bbb6f4
hostapd: initial prototype of an ubus binding 
Supports listing, removing and banning clients, and hooking into
probe/assoc/auth requests via object subscribe.
2025-02-11 11:39:33 +01:00

3290 lines
89 KiB
C
Raw Blame History

/*
* hostapd / IEEE 802.11 Management: Beacon and Probe Request/Response
* Copyright (c) 2002-2004, Instant802 Networks, Inc.
* Copyright (c) 2005-2006, Devicescape Software, Inc.
* Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#ifndef CONFIG_NATIVE_WINDOWS
#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/hw_features_common.h"
#include "common/wpa_ctrl.h"
#include "crypto/sha1.h"
#include "wps/wps_defs.h"
#include "p2p/p2p.h"
#include "hostapd.h"
#include "ieee802_11.h"
#include "wpa_auth.h"
#include "wmm.h"
#include "ap_config.h"
#include "sta_info.h"
#include "p2p_hostapd.h"
#include "ap_drv_ops.h"
#include "beacon.h"
#include "hs20.h"
#include "dfs.h"
#include "taxonomy.h"
#include "ieee802_11_auth.h"
#ifdef NEED_AP_MLME
static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len)
{
if (len < 2 + 5)
return eid;
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->conf->bss_load_test_set) {
*eid++ = WLAN_EID_BSS_LOAD;
*eid++ = 5;
os_memcpy(eid, hapd->conf->bss_load_test, 5);
eid += 5;
return eid;
}
#endif /* CONFIG_TESTING_OPTIONS */
if (hapd->conf->bss_load_update_period) {
*eid++ = WLAN_EID_BSS_LOAD;
*eid++ = 5;
WPA_PUT_LE16(eid, hapd->num_sta);
eid += 2;
*eid++ = hapd->iface->channel_utilization;
WPA_PUT_LE16(eid, 0); /* no available admission capabity */
eid += 2;
}
return eid;
}
static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
{
u8 erp = 0;
if (hapd->iface->current_mode == NULL ||
hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
return 0;
if (hapd->iface->olbc)
erp |= ERP_INFO_USE_PROTECTION;
if (hapd->iface->num_sta_non_erp > 0) {
erp |= ERP_INFO_NON_ERP_PRESENT |
ERP_INFO_USE_PROTECTION;
}
if (hapd->iface->num_sta_no_short_preamble > 0 ||
hapd->iconf->preamble == LONG_PREAMBLE)
erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
return erp;
}
static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
{
enum hostapd_hw_mode hw_mode = hapd->iconf->hw_mode;
if (hw_mode != HOSTAPD_MODE_IEEE80211G &&
hw_mode != HOSTAPD_MODE_IEEE80211B)
return eid;
*eid++ = WLAN_EID_DS_PARAMS;
*eid++ = 1;
*eid++ = hapd->iconf->channel;
return eid;
}
static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
{
if (hapd->iface->current_mode == NULL ||
hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
return eid;
/* Set NonERP_present and use_protection bits if there
* are any associated NonERP stations. */
/* TODO: use_protection bit can be set to zero even if
* there are NonERP stations present. This optimization
* might be useful if NonERP stations are "quiet".
* See 802.11g/D6 E-1 for recommended practice.
* In addition, Non ERP present might be set, if AP detects Non ERP
* operation on other APs. */
/* Add ERP Information element */
*eid++ = WLAN_EID_ERP_INFO;
*eid++ = 1;
*eid++ = ieee802_11_erp_info(hapd);
return eid;
}
static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid)
{
u8 *pos = eid;
u8 local_pwr_constraint = 0;
int dfs;
if (hapd->iface->current_mode == NULL ||
hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)
return eid;
/* Let host drivers add this IE if DFS support is offloaded */
if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
return eid;
/*
* There is no DFS support and power constraint was not directly
* requested by config option.
*/
if (!hapd->iconf->ieee80211h &&
hapd->iconf->local_pwr_constraint == -1)
return eid;
/* Check if DFS is required by regulatory. */
dfs = hostapd_is_dfs_required(hapd->iface);
if (dfs < 0) {
wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
dfs);
dfs = 0;
}
if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1)
return eid;
/*
* ieee80211h (DFS) is enabled so Power Constraint element shall
* be added when running on DFS channel whenever local_pwr_constraint
* is configured or not. In order to meet regulations when TPC is not
* implemented using a transmit power that is below the legal maximum
* (including any mitigation factor) should help. In this case,
* indicate 3 dB below maximum allowed transmit power.
*/
if (hapd->iconf->local_pwr_constraint == -1)
local_pwr_constraint = 3;
/*
* A STA that is not an AP shall use a transmit power less than or
* equal to the local maximum transmit power level for the channel.
* The local maximum transmit power can be calculated from the formula:
* local max TX pwr = max TX pwr - local pwr constraint
* Where max TX pwr is maximum transmit power level specified for
* channel in Country element and local pwr constraint is specified
* for channel in this Power Constraint element.
*/
/* Element ID */
*pos++ = WLAN_EID_PWR_CONSTRAINT;
/* Length */
*pos++ = 1;
/* Local Power Constraint */
if (local_pwr_constraint)
*pos++ = local_pwr_constraint;
else
*pos++ = hapd->iconf->local_pwr_constraint;
return pos;
}
static u8 * hostapd_eid_country_add(struct hostapd_data *hapd, u8 *pos,
u8 *end, int chan_spacing,
struct hostapd_channel_data *start,
struct hostapd_channel_data *prev)
{
if (end - pos < 3)
return pos;
/* first channel number */
*pos++ = start->chan;
/* number of channels */
*pos++ = (prev->chan - start->chan) / chan_spacing + 1;
/* maximum transmit power level */
if (!is_6ghz_op_class(hapd->iconf->op_class))
*pos++ = start->max_tx_power;
else
*pos++ = 0; /* Reserved when operating on the 6 GHz band */
return pos;
}
static u8 * hostapd_fill_subband_triplets(struct hostapd_data *hapd, u8 *pos,
u8 *end)
{
int i;
struct hostapd_hw_modes *mode;
struct hostapd_channel_data *start, *prev;
int chan_spacing = 1;
mode = hapd->iface->current_mode;
if (mode->mode == HOSTAPD_MODE_IEEE80211A)
chan_spacing = 4;
start = prev = NULL;
for (i = 0; i < mode->num_channels; i++) {
struct hostapd_channel_data *chan = &mode->channels[i];
if (chan->flag & HOSTAPD_CHAN_DISABLED)
continue;
if (start && prev &&
prev->chan + chan_spacing == chan->chan &&
start->max_tx_power == chan->max_tx_power) {
prev = chan;
continue; /* can use same entry */
}
if (start && prev)
pos = hostapd_eid_country_add(hapd, pos, end,
chan_spacing,
start, prev);
/* Start new group */
start = prev = chan;
}
if (start) {
pos = hostapd_eid_country_add(hapd, pos, end, chan_spacing,
start, prev);
}
return pos;
}
static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
int max_len)
{
u8 *pos = eid;
u8 *end = eid + max_len;
if (!hapd->iconf->ieee80211d || max_len < 6 ||
hapd->iface->current_mode == NULL)
return eid;
*pos++ = WLAN_EID_COUNTRY;
pos++; /* length will be set later */
os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
pos += 3;
if (is_6ghz_op_class(hapd->iconf->op_class)) {
/* Force the third octet of the country string to indicate
* Global Operating Class (Table E-4) */
eid[4] = 0x04;
/* Operating Triplet field */
/* Operating Extension Identifier (>= 201 to indicate this is
* not a Subband Triplet field) */
*pos++ = 201;
/* Operating Class */
*pos++ = hapd->iconf->op_class;
/* Coverage Class */
*pos++ = 0;
/* Subband Triplets are required only for the 20 MHz case */
if (hapd->iconf->op_class == 131 ||
hapd->iconf->op_class == 136)
pos = hostapd_fill_subband_triplets(hapd, pos, end);
} else {
pos = hostapd_fill_subband_triplets(hapd, pos, end);
}
if ((pos - eid) & 1) {
if (end - pos < 1)
return eid;
*pos++ = 0; /* pad for 16-bit alignment */
}
eid[1] = (pos - eid) - 2;
return pos;
}
const u8 * hostapd_wpa_ie(struct hostapd_data *hapd, u8 eid)
{
const u8 *ies;
size_t ies_len;
ies = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ies_len);
if (!ies)
return NULL;
return get_ie(ies, ies_len, eid);
}
static const u8 * hostapd_vendor_wpa_ie(struct hostapd_data *hapd,
u32 vendor_type)
{
const u8 *ies;
size_t ies_len;
ies = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ies_len);
if (!ies)
return NULL;
return get_vendor_ie(ies, ies_len, vendor_type);
}
static u8 * hostapd_get_rsne(struct hostapd_data *hapd, u8 *pos, size_t len)
{
const u8 *ie;
ie = hostapd_wpa_ie(hapd, WLAN_EID_RSN);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_mde(struct hostapd_data *hapd, u8 *pos, size_t len)
{
const u8 *ie;
ie = hostapd_wpa_ie(hapd, WLAN_EID_MOBILITY_DOMAIN);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_rsnxe(struct hostapd_data *hapd, u8 *pos, size_t len)
{
const u8 *ie;
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->conf->no_beacon_rsnxe) {
wpa_printf(MSG_INFO, "TESTING: Do not add RSNXE into Beacon");
return pos;
}
#endif /* CONFIG_TESTING_OPTIONS */
ie = hostapd_wpa_ie(hapd, WLAN_EID_RSNX);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_wpa_ie(struct hostapd_data *hapd, u8 *pos, size_t len)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, WPA_IE_VENDOR_TYPE);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_osen_ie(struct hostapd_data *hapd, u8 *pos, size_t len)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, OSEN_IE_VENDOR_TYPE);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_rsne_override(struct hostapd_data *hapd, u8 *pos,
size_t len)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, RSNE_OVERRIDE_IE_VENDOR_TYPE);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_rsne_override_2(struct hostapd_data *hapd, u8 *pos,
size_t len)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, RSNE_OVERRIDE_2_IE_VENDOR_TYPE);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static u8 * hostapd_get_rsnxe_override(struct hostapd_data *hapd, u8 *pos,
size_t len)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, RSNXE_OVERRIDE_IE_VENDOR_TYPE);
if (!ie || 2U + ie[1] > len)
return pos;
os_memcpy(pos, ie, 2 + ie[1]);
return pos + 2 + ie[1];
}
static size_t hostapd_get_rsne_override_len(struct hostapd_data *hapd)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, RSNE_OVERRIDE_IE_VENDOR_TYPE);
if (!ie)
return 0;
return 2 + ie[1];
}
static size_t hostapd_get_rsne_override_2_len(struct hostapd_data *hapd)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, RSNE_OVERRIDE_2_IE_VENDOR_TYPE);
if (!ie)
return 0;
return 2 + ie[1];
}
static size_t hostapd_get_rsnxe_override_len(struct hostapd_data *hapd)
{
const u8 *ie;
ie = hostapd_vendor_wpa_ie(hapd, RSNXE_OVERRIDE_IE_VENDOR_TYPE);
if (!ie)
return 0;
return 2 + ie[1];
}
static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid)
{
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->iface->cs_oper_class && hapd->iconf->ecsa_ie_only)
return eid;
#endif /* CONFIG_TESTING_OPTIONS */
if (!hapd->cs_freq_params.channel)
return eid;
*eid++ = WLAN_EID_CHANNEL_SWITCH;
*eid++ = 3;
*eid++ = hapd->cs_block_tx;
*eid++ = hapd->cs_freq_params.channel;
*eid++ = hapd->cs_count;
return eid;
}
static u8 * hostapd_eid_ecsa(struct hostapd_data *hapd, u8 *eid)
{
if (!hapd->cs_freq_params.channel || !hapd->iface->cs_oper_class)
return eid;
*eid++ = WLAN_EID_EXT_CHANSWITCH_ANN;
*eid++ = 4;
*eid++ = hapd->cs_block_tx;
*eid++ = hapd->iface->cs_oper_class;
*eid++ = hapd->cs_freq_params.channel;
*eid++ = hapd->cs_count;
return eid;
}
static u8 * hostapd_eid_max_cs_time(struct hostapd_data *hapd, u8 *eid)
{
#ifdef CONFIG_IEEE80211BE
u32 switch_time;
/* Add Max Channel Switch Time element only if this AP is affiliated
* with an AP MLD and channel switch is in process. */
if (!hapd->conf->mld_ap || !hapd->cs_freq_params.channel)
return eid;
/* Switch time is basically time between CSA count 1 and CSA count
* 0 (1 beacon interval) + time for interface restart + time to
* send a Beacon frame in the new channel (1 beacon interval).
*
* TODO: Use dynamic interface restart time. For now, assume 1 sec.
*/
switch_time = USEC_TO_TU(1000 * 1000) + 2 * hapd->iconf->beacon_int;
*eid++ = WLAN_EID_EXTENSION;
*eid++ = 4;
*eid++ = WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME;
WPA_PUT_LE24(eid, switch_time);
eid += 3;
#endif /* CONFIG_IEEE80211BE */
return eid;
}
static u8 * hostapd_eid_supported_op_classes(struct hostapd_data *hapd, u8 *eid)
{
u8 op_class, channel;
if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) ||
!hapd->iface->freq)
return eid;
if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
hapd->iconf->secondary_channel,
hostapd_get_oper_chwidth(hapd->iconf),
&op_class, &channel) ==
NUM_HOSTAPD_MODES)
return eid;
*eid++ = WLAN_EID_SUPPORTED_OPERATING_CLASSES;
*eid++ = 2;
/* Current Operating Class */
*eid++ = op_class;
/* TODO: Advertise all the supported operating classes */
*eid++ = 0;
return eid;
}
static int
ieee802_11_build_ap_params_mbssid(struct hostapd_data *hapd,
struct wpa_driver_ap_params *params)
{
struct hostapd_iface *iface = hapd->iface;
struct hostapd_data *tx_bss;
size_t len, rnr_len = 0;
u8 elem_count = 0, *elem = NULL, **elem_offset = NULL, *end;
u8 rnr_elem_count = 0, *rnr_elem = NULL, **rnr_elem_offset = NULL;
size_t i;
if (!iface->mbssid_max_interfaces ||
iface->num_bss > iface->mbssid_max_interfaces ||
(iface->conf->mbssid == ENHANCED_MBSSID_ENABLED &&
!iface->ema_max_periodicity))
goto fail;
/* Make sure bss->xrates_supported is set for all BSSs to know whether
* it need to be non-inherited. */
for (i = 0; i < iface->num_bss; i++) {
u8 buf[100];
hostapd_eid_ext_supp_rates(iface->bss[i], buf);
}
tx_bss = hostapd_mbssid_get_tx_bss(hapd);
len = hostapd_eid_mbssid_len(tx_bss, WLAN_FC_STYPE_BEACON, &elem_count,
NULL, 0, &rnr_len);
if (!len || (iface->conf->mbssid == ENHANCED_MBSSID_ENABLED &&
elem_count > iface->ema_max_periodicity))
goto fail;
elem = os_zalloc(len);
if (!elem)
goto fail;
elem_offset = os_zalloc(elem_count * sizeof(u8 *));
if (!elem_offset)
goto fail;
if (rnr_len) {
rnr_elem = os_zalloc(rnr_len);
if (!rnr_elem)
goto fail;
rnr_elem_offset = os_calloc(elem_count + 1, sizeof(u8 *));
if (!rnr_elem_offset)
goto fail;
}
end = hostapd_eid_mbssid(tx_bss, elem, elem + len, WLAN_FC_STYPE_BEACON,
elem_count, elem_offset, NULL, 0, rnr_elem,
&rnr_elem_count, rnr_elem_offset, rnr_len);
params->mbssid_tx_iface = tx_bss->conf->iface;
params->mbssid_index = hostapd_mbssid_get_bss_index(hapd);
params->mbssid_elem = elem;
params->mbssid_elem_len = end - elem;
params->mbssid_elem_count = elem_count;
params->mbssid_elem_offset = elem_offset;
params->rnr_elem = rnr_elem;
params->rnr_elem_len = rnr_len;
params->rnr_elem_count = rnr_elem_count;
params->rnr_elem_offset = rnr_elem_offset;
if (iface->conf->mbssid == ENHANCED_MBSSID_ENABLED)
params->ema = true;
return 0;
fail:
os_free(rnr_elem);
os_free(rnr_elem_offset);
os_free(elem_offset);
os_free(elem);
wpa_printf(MSG_ERROR, "MBSSID: Configuration failed");
return -1;
}
static u8 * hostapd_eid_mbssid_config(struct hostapd_data *hapd, u8 *eid,
u8 mbssid_elem_count)
{
struct hostapd_iface *iface = hapd->iface;
if (iface->conf->mbssid == ENHANCED_MBSSID_ENABLED) {
*eid++ = WLAN_EID_EXTENSION;
*eid++ = 3;
*eid++ = WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION;
*eid++ = iface->num_bss;
*eid++ = mbssid_elem_count;
}
return eid;
}
static size_t he_elem_len(struct hostapd_data *hapd)
{
size_t len = 0;
#ifdef CONFIG_IEEE80211AX
if (!hapd->iconf->ieee80211ax || hapd->conf->disable_11ax)
return len;
len += 3 + sizeof(struct ieee80211_he_capabilities) +
3 + sizeof(struct ieee80211_he_operation) +
3 + sizeof(struct ieee80211_he_mu_edca_parameter_set) +
3 + sizeof(struct ieee80211_spatial_reuse);
if (is_6ghz_op_class(hapd->iconf->op_class)) {
len += sizeof(struct ieee80211_he_6ghz_oper_info) +
3 + sizeof(struct ieee80211_he_6ghz_band_cap);
/* An additional Transmit Power Envelope element for
* subordinate client */
if (he_reg_is_indoor(hapd->iconf->he_6ghz_reg_pwr_type))
len += 4;
/* An additional Transmit Power Envelope element for
* default client with unit interpretation of regulatory
* client EIRP */
if (hapd->iconf->reg_def_cli_eirp != -1 &&
he_reg_is_sp(hapd->iconf->he_6ghz_reg_pwr_type))
len += 4;
}
#endif /* CONFIG_IEEE80211AX */
return len;
}
struct probe_resp_params {
const struct ieee80211_mgmt *req;
bool is_p2p;
/* Generated IEs will be included inside an ML element */
struct hostapd_data *mld_ap;
struct mld_info *mld_info;
struct ieee80211_mgmt *resp;
size_t resp_len;
u8 *csa_pos;
u8 *ecsa_pos;
const u8 *known_bss;
u8 known_bss_len;
#ifdef CONFIG_IEEE80211AX
u8 *cca_pos;
#endif /* CONFIG_IEEE80211AX */
};
static void hostapd_free_probe_resp_params(struct probe_resp_params *params)
{
#ifdef CONFIG_IEEE80211BE
if (!params)
return;
os_free(params->mld_info);
params->mld_info = NULL;
#endif /* CONFIG_IEEE80211BE */
}
static size_t hostapd_probe_resp_elems_len(struct hostapd_data *hapd,
struct probe_resp_params *params)
{
size_t buflen = 0;
#ifdef CONFIG_WPS
if (hapd->wps_probe_resp_ie)
buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_probe_resp_ie)
buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
#ifdef CONFIG_FST
if (hapd->iface->fst_ies)
buflen += wpabuf_len(hapd->iface->fst_ies);
#endif /* CONFIG_FST */
if (hapd->conf->vendor_elements)
buflen += wpabuf_len(hapd->conf->vendor_elements);
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->conf->presp_elements)
buflen += wpabuf_len(hapd->conf->presp_elements);
#endif /* CONFIG_TESTING_OPTIONS */
if (hapd->conf->vendor_vht) {
buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
2 + sizeof(struct ieee80211_vht_operation);
}
buflen += he_elem_len(hapd);
#ifdef CONFIG_IEEE80211BE
if (hapd->iconf->ieee80211be && !hapd->conf->disable_11be) {
struct hostapd_data *ml_elem_ap =
params->mld_ap ? params->mld_ap : hapd;
buflen += hostapd_eid_eht_capab_len(hapd, IEEE80211_MODE_AP);
buflen += 3 + sizeof(struct ieee80211_eht_operation);
if (hapd->iconf->punct_bitmap)
buflen += EHT_OPER_DISABLED_SUBCHAN_BITMAP_SIZE;
if (ml_elem_ap->conf->mld_ap) {
buflen += hostapd_eid_eht_ml_beacon_len(
ml_elem_ap, params->mld_info, !!params->mld_ap);
/* For Max Channel Switch Time element during channel
* switch */
buflen += 6;
}
}
#endif /* CONFIG_IEEE80211BE */
buflen += hostapd_eid_mbssid_len(hapd, WLAN_FC_STYPE_PROBE_RESP, NULL,
params->known_bss,
params->known_bss_len, NULL);
buflen += hostapd_eid_rnr_len(hapd, WLAN_FC_STYPE_PROBE_RESP, true);
buflen += hostapd_mbo_ie_len(hapd);
buflen += hostapd_eid_owe_trans_len(hapd);
buflen += hostapd_eid_dpp_cc_len(hapd);
buflen += hostapd_get_rsne_override_len(hapd);
buflen += hostapd_get_rsne_override_2_len(hapd);
buflen += hostapd_get_rsnxe_override_len(hapd);
return buflen;
}
static u8 * hostapd_probe_resp_fill_elems(struct hostapd_data *hapd,
struct probe_resp_params *params,
u8 *pos, size_t len)
{
u8 *csa_pos;
u8 *epos;
epos = pos + len;
*pos++ = WLAN_EID_SSID;
*pos++ = hapd->conf->ssid.ssid_len;
os_memcpy(pos, hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
pos = hostapd_eid_country(hapd, pos, epos - pos);
/* Power Constraint element */
pos = hostapd_eid_pwr_constraint(hapd, pos);
/* CSA element */
csa_pos = hostapd_eid_csa(hapd, pos);
if (csa_pos != pos)
params->csa_pos = csa_pos - 1;
else
params->csa_pos = NULL;
pos = csa_pos;
/* ERP Information element */
pos = hostapd_eid_erp_info(hapd, pos);
/* Extended supported rates */
pos = hostapd_eid_ext_supp_rates(hapd, pos);
pos = hostapd_get_rsne(hapd, pos, epos - pos);
pos = hostapd_eid_bss_load(hapd, pos, epos - pos);
pos = hostapd_eid_mbssid(hapd, pos, epos, WLAN_FC_STYPE_PROBE_RESP, 0,
NULL, params->known_bss, params->known_bss_len,
NULL, NULL, NULL, 0);
pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos);
pos = hostapd_get_mde(hapd, pos, epos - pos);
/* eCSA element */
csa_pos = hostapd_eid_ecsa(hapd, pos);
if (csa_pos != pos)
params->ecsa_pos = csa_pos - 1;
else
params->ecsa_pos = NULL;
pos = csa_pos;
pos = hostapd_eid_supported_op_classes(hapd, pos);
pos = hostapd_eid_ht_capabilities(hapd, pos);
pos = hostapd_eid_ht_operation(hapd, pos);
/* Probe Response frames always include all non-TX profiles except
* when a list of known BSSes is included in the Probe Request frame. */
pos = hostapd_eid_ext_capab(hapd, pos,
hapd->iconf->mbssid >= MBSSID_ENABLED &&
!params->known_bss_len);
pos = hostapd_eid_time_adv(hapd, pos);
pos = hostapd_eid_time_zone(hapd, pos);
pos = hostapd_eid_interworking(hapd, pos);
pos = hostapd_eid_adv_proto(hapd, pos);
pos = hostapd_eid_roaming_consortium(hapd, pos);
#ifdef CONFIG_FST
if (hapd->iface->fst_ies) {
os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies),
wpabuf_len(hapd->iface->fst_ies));
pos += wpabuf_len(hapd->iface->fst_ies);
}
#endif /* CONFIG_FST */
#ifdef CONFIG_IEEE80211AC
if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac &&
!is_6ghz_op_class(hapd->iconf->op_class)) {
pos = hostapd_eid_vht_capabilities(hapd, pos, 0);
pos = hostapd_eid_vht_operation(hapd, pos);
pos = hostapd_eid_txpower_envelope(hapd, pos);
}
#endif /* CONFIG_IEEE80211AC */
#ifdef CONFIG_IEEE80211AX
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax &&
is_6ghz_op_class(hapd->iconf->op_class))
pos = hostapd_eid_txpower_envelope(hapd, pos);
#endif /* CONFIG_IEEE80211AX */
pos = hostapd_eid_chsw_wrapper(hapd, pos);
pos = hostapd_eid_rnr(hapd, pos, WLAN_FC_STYPE_PROBE_RESP, true);
pos = hostapd_eid_fils_indic(hapd, pos, 0);
/* Max Channel Switch Time element */
pos = hostapd_eid_max_cs_time(hapd, pos);
pos = hostapd_get_rsnxe(hapd, pos, epos - pos);
#ifdef CONFIG_IEEE80211AX
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax) {
u8 *cca_pos;
pos = hostapd_eid_he_capab(hapd, pos, IEEE80211_MODE_AP);
pos = hostapd_eid_he_operation(hapd, pos);
/* BSS Color Change Announcement element */
cca_pos = hostapd_eid_cca(hapd, pos);
if (cca_pos != pos)
params->cca_pos = cca_pos - 2;
else
params->cca_pos = NULL;
pos = cca_pos;
pos = hostapd_eid_spatial_reuse(hapd, pos);
pos = hostapd_eid_he_mu_edca_parameter_set(hapd, pos);
pos = hostapd_eid_he_6ghz_band_cap(hapd, pos);
}
#endif /* CONFIG_IEEE80211AX */
#ifdef CONFIG_IEEE80211BE
if (hapd->iconf->ieee80211be && !hapd->conf->disable_11be) {
struct hostapd_data *ml_elem_ap =
params->mld_ap ? params->mld_ap : hapd;
if (ml_elem_ap->conf->mld_ap)
pos = hostapd_eid_eht_ml_beacon(
ml_elem_ap, params->mld_info,
pos, !!params->mld_ap);
pos = hostapd_eid_eht_capab(hapd, pos, IEEE80211_MODE_AP);
pos = hostapd_eid_eht_operation(hapd, pos);
}
#endif /* CONFIG_IEEE80211BE */
#ifdef CONFIG_IEEE80211AC
if (hapd->conf->vendor_vht)
pos = hostapd_eid_vendor_vht(hapd, pos);
#endif /* CONFIG_IEEE80211AC */
/* WPA / OSEN */
pos = hostapd_get_wpa_ie(hapd, pos, epos - pos);
pos = hostapd_get_osen_ie(hapd, pos, epos - pos);
/* Wi-Fi Alliance WMM */
pos = hostapd_eid_wmm(hapd, pos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
wpabuf_len(hapd->wps_probe_resp_ie));
pos += wpabuf_len(hapd->wps_probe_resp_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && params->is_p2p &&
hapd->p2p_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
wpabuf_len(hapd->p2p_probe_resp_ie));
pos += wpabuf_len(hapd->p2p_probe_resp_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_HS20
pos = hostapd_eid_hs20_indication(hapd, pos);
#endif /* CONFIG_HS20 */
pos = hostapd_eid_mbo(hapd, pos, epos - pos);
pos = hostapd_eid_owe_trans(hapd, pos, epos - pos);
pos = hostapd_eid_dpp_cc(hapd, pos, epos - pos);
pos = hostapd_get_rsne_override(hapd, pos, epos - pos);
pos = hostapd_get_rsne_override_2(hapd, pos, epos - pos);
pos = hostapd_get_rsnxe_override(hapd, pos, epos - pos);
if (hapd->conf->vendor_elements) {
os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
wpabuf_len(hapd->conf->vendor_elements));
pos += wpabuf_len(hapd->conf->vendor_elements);
}
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->conf->presp_elements) {
os_memcpy(pos, wpabuf_head(hapd->conf->presp_elements),
wpabuf_len(hapd->conf->presp_elements));
pos += wpabuf_len(hapd->conf->presp_elements);
}
#endif /* CONFIG_TESTING_OPTIONS */
return pos;
}
static void hostapd_gen_probe_resp(struct hostapd_data *hapd,
struct probe_resp_params *params)
{
u8 *pos;
size_t buflen;
hapd = hostapd_mbssid_get_tx_bss(hapd);
#define MAX_PROBERESP_LEN 768
buflen = MAX_PROBERESP_LEN;
buflen += hostapd_probe_resp_elems_len(hapd, params);
params->resp = os_zalloc(buflen);
if (!params->resp) {
params->resp_len = 0;
return;
}
params->resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_PROBE_RESP);
/* Unicast the response to all requests on bands other than 6 GHz. For
* the 6 GHz, unicast is used only if the actual SSID is not included in
* the Beacon frames. Otherwise, broadcast response is used per IEEE
* Std 802.11ax-2021, 26.17.2.3.2. Broadcast address is also used for
* the Probe Response frame template for the unsolicited (i.e., not as
* a response to a specific request) case. */
if (params->req && (!is_6ghz_op_class(hapd->iconf->op_class) ||
hapd->conf->ignore_broadcast_ssid))
os_memcpy(params->resp->da, params->req->sa, ETH_ALEN);
else
os_memset(params->resp->da, 0xff, ETH_ALEN);
os_memcpy(params->resp->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(params->resp->bssid, hapd->own_addr, ETH_ALEN);
params->resp->u.probe_resp.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
params->resp->u.probe_resp.capab_info =
host_to_le16(hostapd_own_capab_info(hapd));
pos = hostapd_probe_resp_fill_elems(hapd, params,
params->resp->u.probe_resp.variable,
buflen);
params->resp_len = pos - (u8 *) params->resp;
}
#ifdef CONFIG_IEEE80211BE
static void hostapd_fill_probe_resp_ml_params(struct hostapd_data *hapd,
struct probe_resp_params *params,
const struct ieee80211_mgmt *mgmt,
int mld_id, u16 links)
{
struct hostapd_data *link;
params->mld_ap = NULL;
params->mld_info = os_zalloc(sizeof(*params->mld_info));
if (!params->mld_info)
return;
wpa_printf(MSG_DEBUG,
"MLD: Got ML probe request with AP MLD ID %d for links %04x",
mld_id, links);
for_each_mld_link(link, hapd) {
struct mld_link_info *link_info;
u8 mld_link_id = link->mld_link_id;
/*
* Set mld_ap iff the ML probe request explicitly
* requested a specific MLD ID. In that case, the targeted
* AP may have been a nontransmitted BSSID on the same
* interface.
*/
if (mld_id != -1 && link->iface == hapd->iface)
params->mld_ap = link;
/* Never duplicate main Probe Response frame body */
if (link == hapd)
continue;
/* Only include requested links */
if (!(BIT(mld_link_id) & links))
continue;
link_info = &params->mld_info->links[mld_link_id];
os_memcpy(link_info, &hapd->partner_links[mld_link_id],
sizeof(hapd->partner_links[mld_link_id]));
wpa_printf(MSG_DEBUG,
"MLD: ML probe response includes link STA info for %d: %u bytes",
mld_link_id, link_info->resp_sta_profile_len);
}
if (mld_id != -1 && !params->mld_ap) {
wpa_printf(MSG_DEBUG,
"MLD: No nontransmitted BSSID for MLD ID %d",
mld_id);
goto fail;
}
return;
fail:
hostapd_free_probe_resp_params(params);
params->mld_ap = NULL;
params->mld_info = NULL;
}
#endif /* CONFIG_IEEE80211BE */
enum ssid_match_result {
NO_SSID_MATCH,
EXACT_SSID_MATCH,
WILDCARD_SSID_MATCH,
CO_LOCATED_SSID_MATCH,
};
static enum ssid_match_result ssid_match(struct hostapd_data *hapd,
const u8 *ssid, size_t ssid_len,
const u8 *ssid_list,
size_t ssid_list_len,
const u8 *short_ssid_list,
size_t short_ssid_list_len)
{
const u8 *pos, *end;
struct hostapd_iface *iface = hapd->iface;
int wildcard = 0;
size_t i, j;
if (ssid_len == 0)
wildcard = 1;
if (ssid_len == hapd->conf->ssid.ssid_len &&
os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0)
return EXACT_SSID_MATCH;
if (ssid_list) {
pos = ssid_list;
end = ssid_list + ssid_list_len;
while (end - pos >= 2) {
if (2 + pos[1] > end - pos)
break;
if (pos[1] == 0)
wildcard = 1;
if (pos[1] == hapd->conf->ssid.ssid_len &&
os_memcmp(pos + 2, hapd->conf->ssid.ssid,
pos[1]) == 0)
return EXACT_SSID_MATCH;
pos += 2 + pos[1];
}
}
if (short_ssid_list) {
pos = short_ssid_list;
end = short_ssid_list + short_ssid_list_len;
while (end - pos >= 4) {
if (hapd->conf->ssid.short_ssid == WPA_GET_LE32(pos))
return EXACT_SSID_MATCH;
pos += 4;
}
}
if (wildcard)
return WILDCARD_SSID_MATCH;
if (!iface->interfaces || iface->interfaces->count <= 1 ||
is_6ghz_op_class(hapd->iconf->op_class))
return NO_SSID_MATCH;
for (i = 0; i < iface->interfaces->count; i++) {
struct hostapd_iface *colocated;
colocated = iface->interfaces->iface[i];
if (colocated == iface ||
!is_6ghz_op_class(colocated->conf->op_class))
continue;
for (j = 0; j < colocated->num_bss; j++) {
struct hostapd_bss_config *conf;
conf = colocated->bss[j]->conf;
if (ssid_len == conf->ssid.ssid_len &&
os_memcmp(ssid, conf->ssid.ssid, ssid_len) == 0)
return CO_LOCATED_SSID_MATCH;
}
}
return NO_SSID_MATCH;
}
void sta_track_expire(struct hostapd_iface *iface, int force)
{
struct os_reltime now;
struct hostapd_sta_info *info;
if (!iface->num_sta_seen)
return;
os_get_reltime(&now);
while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
list))) {
if (!force &&
!os_reltime_expired(&now, &info->last_seen,
iface->conf->track_sta_max_age))
break;
force = 0;
wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for "
MACSTR, iface->bss[0]->conf->iface,
MAC2STR(info->addr));
dl_list_del(&info->list);
iface->num_sta_seen--;
sta_track_del(info);
}
}
static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface,
const u8 *addr)
{
struct hostapd_sta_info *info;
dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list)
if (ether_addr_equal(addr, info->addr))
return info;
return NULL;
}
void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal)
{
struct hostapd_sta_info *info;
info = sta_track_get(iface, addr);
if (info) {
/* Move the most recent entry to the end of the list */
dl_list_del(&info->list);
dl_list_add_tail(&iface->sta_seen, &info->list);
os_get_reltime(&info->last_seen);
info->ssi_signal = ssi_signal;
return;
}
/* Add a new entry */
info = os_zalloc(sizeof(*info));
if (info == NULL)
return;
os_memcpy(info->addr, addr, ETH_ALEN);
os_get_reltime(&info->last_seen);
info->ssi_signal = ssi_signal;
if (iface->num_sta_seen >= iface->conf->track_sta_max_num) {
/* Expire oldest entry to make room for a new one */
sta_track_expire(iface, 1);
}
wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for "
MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr));
dl_list_add_tail(&iface->sta_seen, &info->list);
iface->num_sta_seen++;
}
struct hostapd_data *
sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr,
const char *ifname)
{
struct hapd_interfaces *interfaces = iface->interfaces;
size_t i, j;
for (i = 0; i < interfaces->count; i++) {
struct hostapd_data *hapd = NULL;
iface = interfaces->iface[i];
for (j = 0; j < iface->num_bss; j++) {
hapd = iface->bss[j];
if (os_strcmp(ifname, hapd->conf->iface) == 0)
break;
hapd = NULL;
}
if (hapd && sta_track_get(iface, addr))
return hapd;
}
return NULL;
}
#ifdef CONFIG_TAXONOMY
void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr,
struct wpabuf **probe_ie_taxonomy)
{
struct hostapd_sta_info *info;
info = sta_track_get(iface, addr);
if (!info)
return;
wpabuf_free(*probe_ie_taxonomy);
*probe_ie_taxonomy = info->probe_ie_taxonomy;
info->probe_ie_taxonomy = NULL;
}
#endif /* CONFIG_TAXONOMY */
#ifdef CONFIG_IEEE80211BE
static bool parse_ml_probe_req(const struct ieee80211_eht_ml *ml, size_t ml_len,
int *mld_id, u16 *links)
{
u16 ml_control;
const struct element *sub;
const u8 *pos;
size_t len;
*mld_id = -1;
*links = 0xffff;
if (ml_len < sizeof(struct ieee80211_eht_ml))
return false;
ml_control = le_to_host16(ml->ml_control);
if ((ml_control & MULTI_LINK_CONTROL_TYPE_MASK) !=
MULTI_LINK_CONTROL_TYPE_PROBE_REQ) {
wpa_printf(MSG_DEBUG, "MLD: Not an ML probe req");
return false;
}
if (sizeof(struct ieee80211_eht_ml) + 1 > ml_len) {
wpa_printf(MSG_DEBUG, "MLD: ML probe req too short");
return false;
}
pos = ml->variable;
len = pos[0];
if (len < 1 || sizeof(struct ieee80211_eht_ml) + len > ml_len) {
wpa_printf(MSG_DEBUG,
"MLD: ML probe request with invalid length");
return false;
}
if (ml_control & EHT_ML_PRES_BM_PROBE_REQ_AP_MLD_ID) {
if (len < 2) {
wpa_printf(MSG_DEBUG,
"MLD: ML probe req too short for MLD ID");
return false;
}
*mld_id = pos[1];
}
pos += len;
/* Parse subelements (if there are any) */
len = ml_len - len - sizeof(struct ieee80211_eht_ml);
for_each_element_id(sub, 0, pos, len) {
const struct ieee80211_eht_per_sta_profile *sta;
u16 sta_control;
if (*links == 0xffff)
*links = 0;
if (sub->datalen <
sizeof(struct ieee80211_eht_per_sta_profile)) {
wpa_printf(MSG_DEBUG,
"MLD: ML probe req %d too short for sta profile",
sub->datalen);
return false;
}
sta = (struct ieee80211_eht_per_sta_profile *) sub->data;
/*
* Extract the link ID, do not return whether a complete or
* partial profile was requested.
*/
sta_control = le_to_host16(sta->sta_control);
*links |= BIT(sta_control & EHT_PER_STA_CTRL_LINK_ID_MSK);
}
if (!for_each_element_completed(sub, pos, len)) {
wpa_printf(MSG_DEBUG,
"MLD: ML probe req sub-elements parsing error");
return false;
}
return true;
}
#endif /* CONFIG_IEEE80211BE */
void handle_probe_req(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len,
int ssi_signal)
{
struct ieee802_11_elems elems;
const u8 *ie;
size_t ie_len;
size_t i;
int noack;
enum ssid_match_result res;
int ret;
u16 csa_offs[2];
size_t csa_offs_len;
struct radius_sta rad_info;
struct probe_resp_params params;
#ifdef CONFIG_IEEE80211BE
int mld_id;
u16 links;
#endif /* CONFIG_IEEE80211BE */
struct hostapd_ubus_request req = {
.type = HOSTAPD_UBUS_PROBE_REQ,
.mgmt_frame = mgmt,
.ssi_signal = ssi_signal,
.elems = &elems,
};
if (hapd->iconf->rssi_ignore_probe_request && ssi_signal &&
ssi_signal < hapd->iconf->rssi_ignore_probe_request)
return;
if (len < IEEE80211_HDRLEN)
return;
ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN;
if (hapd->iconf->track_sta_max_num)
sta_track_add(hapd->iface, mgmt->sa, ssi_signal);
ie_len = len - IEEE80211_HDRLEN;
ret = hostapd_allowed_address(hapd, mgmt->sa, (const u8 *) mgmt, len,
&rad_info, 1);
if (ret == HOSTAPD_ACL_REJECT) {
wpa_msg(hapd->msg_ctx, MSG_DEBUG,
"Ignore Probe Request frame from " MACSTR
" due to ACL reject ", MAC2STR(mgmt->sa));
return;
}
for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
mgmt->sa, mgmt->da, mgmt->bssid,
ie, ie_len, ssi_signal) > 0)
return;
if (!hapd->conf->send_probe_response)
return;
if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
if ((!elems.ssid || !elems.supp_rates)) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
"without SSID or supported rates element",
MAC2STR(mgmt->sa));
return;
}
/*
* No need to reply if the Probe Request frame was sent on an adjacent
* channel. IEEE Std 802.11-2012 describes this as a requirement for an
* AP with dot11RadioMeasurementActivated set to true, but strictly
* speaking does not allow such ignoring of Probe Request frames if
* dot11RadioMeasurementActivated is false. Anyway, this can help reduce
* number of unnecessary Probe Response frames for cases where the STA
* is less likely to see them (Probe Request frame sent on a
* neighboring, but partially overlapping, channel).
*/
if (elems.ds_params &&
hapd->iface->current_mode &&
(hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
hapd->iconf->channel != elems.ds_params[0]) {
wpa_printf(MSG_DEBUG,
"Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
hapd->iconf->channel, elems.ds_params[0]);
return;
}
#ifdef CONFIG_P2P
if (hapd->p2p && hapd->p2p_group && elems.wps_ie) {
struct wpabuf *wps;
wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
"due to mismatch with Requested Device "
"Type");
wpabuf_free(wps);
return;
}
wpabuf_free(wps);
}
if (hapd->p2p && hapd->p2p_group && elems.p2p) {
struct wpabuf *p2p;
p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
"due to mismatch with Device ID");
wpabuf_free(p2p);
return;
}
wpabuf_free(p2p);
}
#endif /* CONFIG_P2P */
if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
elems.ssid_list_len == 0 && elems.short_ssid_list_len == 0) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
"broadcast SSID ignored", MAC2STR(mgmt->sa));
return;
}
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
P2P_WILDCARD_SSID_LEN) == 0) {
/* Process P2P Wildcard SSID like Wildcard SSID */
elems.ssid_len = 0;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_TAXONOMY
{
struct sta_info *sta;
struct hostapd_sta_info *info;
if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) {
taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len);
} else if ((info = sta_track_get(hapd->iface,
mgmt->sa)) != NULL) {
taxonomy_hostapd_sta_info_probe_req(hapd, info,
ie, ie_len);
}
}
#endif /* CONFIG_TAXONOMY */
res = ssid_match(hapd, elems.ssid, elems.ssid_len,
elems.ssid_list, elems.ssid_list_len,
elems.short_ssid_list, elems.short_ssid_list_len);
if (res == NO_SSID_MATCH) {
if (!(mgmt->da[0] & 0x01)) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for foreign SSID '%s' (DA " MACSTR ")%s",
MAC2STR(mgmt->sa),
wpa_ssid_txt(elems.ssid, elems.ssid_len),
MAC2STR(mgmt->da),
elems.ssid_list ? " (SSID list)" : "");
}
return;
}
if (hapd->conf->ignore_broadcast_ssid && res == WILDCARD_SSID_MATCH) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
"broadcast SSID ignored", MAC2STR(mgmt->sa));
return;
}
#ifdef CONFIG_INTERWORKING
if (hapd->conf->interworking &&
elems.interworking && elems.interworking_len >= 1) {
u8 ant = elems.interworking[0] & 0x0f;
if (ant != INTERWORKING_ANT_WILDCARD &&
ant != hapd->conf->access_network_type) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for mismatching ANT %u ignored",
MAC2STR(mgmt->sa), ant);
return;
}
}
if (hapd->conf->interworking && elems.interworking &&
(elems.interworking_len == 7 || elems.interworking_len == 9)) {
const u8 *hessid;
if (elems.interworking_len == 7)
hessid = elems.interworking + 1;
else
hessid = elems.interworking + 1 + 2;
if (!is_broadcast_ether_addr(hessid) &&
!ether_addr_equal(hessid, hapd->conf->hessid)) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for mismatching HESSID " MACSTR
" ignored",
MAC2STR(mgmt->sa), MAC2STR(hessid));
return;
}
}
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
supp_rates_11b_only(&elems)) {
/* Indicates support for 11b rates only */
wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
MACSTR " with only 802.11b rates",
MAC2STR(mgmt->sa));
return;
}
#endif /* CONFIG_P2P */
if (hostapd_ubus_handle_event(hapd, &req)) {
wpa_printf(MSG_DEBUG, "Probe request for " MACSTR " rejected by ubus handler.\n",
MAC2STR(mgmt->sa));
return;
}
/* TODO: verify that supp_rates contains at least one matching rate
* with AP configuration */
if (hapd->conf->no_probe_resp_if_seen_on &&
is_multicast_ether_addr(mgmt->da) &&
is_multicast_ether_addr(mgmt->bssid) &&
sta_track_seen_on(hapd->iface, mgmt->sa,
hapd->conf->no_probe_resp_if_seen_on)) {
wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
" since STA has been seen on %s",
hapd->conf->iface, MAC2STR(mgmt->sa),
hapd->conf->no_probe_resp_if_seen_on);
return;
}
if (hapd->conf->no_probe_resp_if_max_sta &&
is_multicast_ether_addr(mgmt->da) &&
is_multicast_ether_addr(mgmt->bssid) &&
hapd->num_sta >= hapd->conf->max_num_sta &&
!ap_get_sta(hapd, mgmt->sa)) {
wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
" since no room for additional STA",
hapd->conf->iface, MAC2STR(mgmt->sa));
return;
}
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->iconf->ignore_probe_probability > 0.0 &&
drand48() < hapd->iconf->ignore_probe_probability) {
wpa_printf(MSG_INFO,
"TESTING: ignoring probe request from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
#endif /* CONFIG_TESTING_OPTIONS */
/* Do not send Probe Response frame from a non-transmitting multiple
* BSSID profile unless the Probe Request frame is directed at that
* particular BSS. */
if (hapd != hostapd_mbssid_get_tx_bss(hapd) && res != EXACT_SSID_MATCH)
return;
wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, RX_PROBE_REQUEST "sa=" MACSTR
" signal=%d", MAC2STR(mgmt->sa), ssi_signal);
os_memset(&params, 0, sizeof(params));
#ifdef CONFIG_IEEE80211BE
if (hapd->conf->mld_ap && elems.probe_req_mle &&
parse_ml_probe_req((struct ieee80211_eht_ml *) elems.probe_req_mle,
elems.probe_req_mle_len, &mld_id, &links)) {
hostapd_fill_probe_resp_ml_params(hapd, &params, mgmt,
mld_id, links);
}
#endif /* CONFIG_IEEE80211BE */
params.req = mgmt;
params.is_p2p = !!elems.p2p;
params.known_bss = elems.mbssid_known_bss;
params.known_bss_len = elems.mbssid_known_bss_len;
hostapd_gen_probe_resp(hapd, &params);
hostapd_free_probe_resp_params(&params);
if (!params.resp)
return;
/*
* If this is a broadcast probe request, apply no ack policy to avoid
* excessive retries.
*/
noack = !!(res == WILDCARD_SSID_MATCH &&
is_broadcast_ether_addr(mgmt->da));
csa_offs_len = 0;
if (hapd->csa_in_progress) {
if (params.csa_pos)
csa_offs[csa_offs_len++] =
params.csa_pos - (u8 *) params.resp;
if (params.ecsa_pos)
csa_offs[csa_offs_len++] =
params.ecsa_pos - (u8 *) params.resp;
}
ret = hostapd_drv_send_mlme(hapd, params.resp, params.resp_len, noack,
csa_offs_len ? csa_offs : NULL,
csa_offs_len, 0);
if (ret < 0)
wpa_printf(MSG_INFO, "handle_probe_req: send failed");
os_free(params.resp);
wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
"SSID", MAC2STR(mgmt->sa),
elems.ssid_len == 0 ? "broadcast" : "our");
}
static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
size_t *resp_len)
{
struct probe_resp_params params;
/* check probe response offloading caps and print warnings */
if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD))
return NULL;
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_probe_resp_ie &&
(!(hapd->iface->probe_resp_offloads &
(WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS |
WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2))))
wpa_printf(MSG_WARNING, "Device is trying to offload WPS "
"Probe Response while not supporting this");
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie &&
!(hapd->iface->probe_resp_offloads &
WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P))
wpa_printf(MSG_WARNING, "Device is trying to offload P2P "
"Probe Response while not supporting this");
#endif /* CONFIG_P2P */
if (hapd->conf->interworking &&
!(hapd->iface->probe_resp_offloads &
WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING))
wpa_printf(MSG_WARNING, "Device is trying to offload "
"Interworking Probe Response while not supporting "
"this");
/* Generate a Probe Response template for the non-P2P case */
os_memset(&params, 0, sizeof(params));
params.req = NULL;
params.is_p2p = false;
params.known_bss = NULL;
params.known_bss_len = 0;
params.mld_ap = NULL;
params.mld_info = NULL;
hostapd_gen_probe_resp(hapd, &params);
*resp_len = params.resp_len;
if (!params.resp)
return NULL;
/* TODO: Avoid passing these through struct hostapd_data */
if (params.csa_pos)
hapd->cs_c_off_proberesp = params.csa_pos - (u8 *) params.resp;
if (params.ecsa_pos)
hapd->cs_c_off_ecsa_proberesp = params.ecsa_pos -
(u8 *) params.resp;
#ifdef CONFIG_IEEE80211AX
if (params.cca_pos)
hapd->cca_c_off_proberesp = params.cca_pos - (u8 *) params.resp;
#endif /* CONFIG_IEEE80211AX */
return (u8 *) params.resp;
}
#endif /* NEED_AP_MLME */
#ifdef CONFIG_IEEE80211AX
/* Unsolicited broadcast Probe Response transmission, 6 GHz only */
u8 * hostapd_unsol_bcast_probe_resp(struct hostapd_data *hapd,
struct unsol_bcast_probe_resp *ubpr)
{
struct probe_resp_params probe_params;
if (!is_6ghz_op_class(hapd->iconf->op_class))
return NULL;
ubpr->unsol_bcast_probe_resp_interval =
hapd->conf->unsol_bcast_probe_resp_interval;
os_memset(&probe_params, 0, sizeof(probe_params));
probe_params.req = NULL;
probe_params.is_p2p = false;
probe_params.known_bss = NULL;
probe_params.known_bss_len = 0;
probe_params.mld_ap = NULL;
probe_params.mld_info = NULL;
hostapd_gen_probe_resp(hapd, &probe_params);
ubpr->unsol_bcast_probe_resp_tmpl_len = probe_params.resp_len;
return (u8 *) probe_params.resp;
}
#endif /* CONFIG_IEEE80211AX */
void sta_track_del(struct hostapd_sta_info *info)
{
#ifdef CONFIG_TAXONOMY
wpabuf_free(info->probe_ie_taxonomy);
info->probe_ie_taxonomy = NULL;
#endif /* CONFIG_TAXONOMY */
os_free(info);
}
#ifdef CONFIG_FILS
static u16 hostapd_gen_fils_discovery_phy_index(struct hostapd_data *hapd)
{
#ifdef CONFIG_IEEE80211BE
if (hapd->iconf->ieee80211be && !hapd->conf->disable_11be)
return FD_CAP_PHY_INDEX_EHT;
#endif /* CONFIG_IEEE80211BE */
#ifdef CONFIG_IEEE80211AX
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax)
return FD_CAP_PHY_INDEX_HE;
#endif /* CONFIG_IEEE80211AX */
#ifdef CONFIG_IEEE80211AC
if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac)
return FD_CAP_PHY_INDEX_VHT;
#endif /* CONFIG_IEEE80211AC */
if (hapd->iconf->ieee80211n && !hapd->conf->disable_11n)
return FD_CAP_PHY_INDEX_HT;
return 0;
}
static u16 hostapd_gen_fils_discovery_nss(struct hostapd_hw_modes *mode,
u16 phy_index, u8 he_mcs_nss_size)
{
u16 nss = 0;
if (!mode)
return 0;
if (phy_index == FD_CAP_PHY_INDEX_HE) {
const u8 *he_mcs = mode->he_capab[IEEE80211_MODE_AP].mcs;
int i;
u16 mcs[6];
os_memset(mcs, 0xff, 6 * sizeof(u16));
if (he_mcs_nss_size == 4) {
mcs[0] = WPA_GET_LE16(&he_mcs[0]);
mcs[1] = WPA_GET_LE16(&he_mcs[2]);
}
if (he_mcs_nss_size == 8) {
mcs[2] = WPA_GET_LE16(&he_mcs[4]);
mcs[3] = WPA_GET_LE16(&he_mcs[6]);
}
if (he_mcs_nss_size == 12) {
mcs[4] = WPA_GET_LE16(&he_mcs[8]);
mcs[5] = WPA_GET_LE16(&he_mcs[10]);
}
for (i = 0; i < HE_NSS_MAX_STREAMS; i++) {
u16 nss_mask = 0x3 << (i * 2);
/*
* If Tx and/or Rx indicate support for a given NSS,
* count it towards the maximum NSS.
*/
if (he_mcs_nss_size == 4 &&
(((mcs[0] & nss_mask) != nss_mask) ||
((mcs[1] & nss_mask) != nss_mask))) {
nss++;
continue;
}
if (he_mcs_nss_size == 8 &&
(((mcs[2] & nss_mask) != nss_mask) ||
((mcs[3] & nss_mask) != nss_mask))) {
nss++;
continue;
}
if (he_mcs_nss_size == 12 &&
(((mcs[4] & nss_mask) != nss_mask) ||
((mcs[5] & nss_mask) != nss_mask))) {
nss++;
continue;
}
}
} else if (phy_index == FD_CAP_PHY_INDEX_EHT) {
u8 rx_nss, tx_nss, max_nss = 0, i;
u8 *mcs = mode->eht_capab[IEEE80211_MODE_AP].mcs;
/*
* The Supported EHT-MCS And NSS Set field for the AP contains
* one to three EHT-MCS Map fields based on the supported
* bandwidth. Check the first byte (max NSS for Rx/Tx that
* supports EHT-MCS 0-9) for each bandwidth (<= 80,
* 160, 320) to find the maximum NSS. This assumes that
* the lowest MCS rates support the largest number of spatial
* streams. If values are different between Tx, Rx or the
* bandwidths, choose the highest value.
*/
for (i = 0; i < 3; i++) {
rx_nss = mcs[3 * i] & 0x0F;
if (rx_nss > max_nss)
max_nss = rx_nss;
tx_nss = (mcs[3 * i] & 0xF0) >> 4;
if (tx_nss > max_nss)
max_nss = tx_nss;
}
nss = max_nss;
}
if (nss > 4)
return FD_CAP_NSS_5_8 << FD_CAP_NSS_SHIFT;
if (nss)
return (nss - 1) << FD_CAP_NSS_SHIFT;
return 0;
}
static u16 hostapd_fils_discovery_cap(struct hostapd_data *hapd)
{
u16 cap_info, phy_index;
u8 chwidth = FD_CAP_BSS_CHWIDTH_20, he_mcs_nss_size = 4;
struct hostapd_hw_modes *mode = hapd->iface->current_mode;
cap_info = FD_CAP_ESS;
if (hapd->conf->wpa)
cap_info |= FD_CAP_PRIVACY;
if (is_6ghz_op_class(hapd->iconf->op_class)) {
switch (hapd->iconf->op_class) {
case 137:
chwidth = FD_CAP_BSS_CHWIDTH_320;
break;
case 135:
he_mcs_nss_size += 4;
/* fallthrough */
case 134:
he_mcs_nss_size += 4;
chwidth = FD_CAP_BSS_CHWIDTH_160_80_80;
break;
case 133:
chwidth = FD_CAP_BSS_CHWIDTH_80;
break;
case 132:
chwidth = FD_CAP_BSS_CHWIDTH_40;
break;
}
} else {
switch (hostapd_get_oper_chwidth(hapd->iconf)) {
case CONF_OPER_CHWIDTH_80P80MHZ:
he_mcs_nss_size += 4;
/* fallthrough */
case CONF_OPER_CHWIDTH_160MHZ:
he_mcs_nss_size += 4;
chwidth = FD_CAP_BSS_CHWIDTH_160_80_80;
break;
case CONF_OPER_CHWIDTH_80MHZ:
chwidth = FD_CAP_BSS_CHWIDTH_80;
break;
case CONF_OPER_CHWIDTH_USE_HT:
if (hapd->iconf->secondary_channel)
chwidth = FD_CAP_BSS_CHWIDTH_40;
else
chwidth = FD_CAP_BSS_CHWIDTH_20;
break;
default:
break;
}
}
phy_index = hostapd_gen_fils_discovery_phy_index(hapd);
cap_info |= phy_index << FD_CAP_PHY_INDEX_SHIFT;
cap_info |= chwidth << FD_CAP_BSS_CHWIDTH_SHIFT;
cap_info |= hostapd_gen_fils_discovery_nss(mode, phy_index,
he_mcs_nss_size);
return cap_info;
}
static u8 * hostapd_gen_fils_discovery(struct hostapd_data *hapd, size_t *len)
{
struct ieee80211_mgmt *head;
const u8 *mobility_domain;
u8 *pos, *length_pos, buf[200];
u16 ctl = 0;
u8 fd_rsn_info[5];
size_t total_len, buf_len;
total_len = 24 + 2 + 12;
/* FILS Discovery Frame Control */
ctl = (sizeof(hapd->conf->ssid.short_ssid) - 1) |
FD_FRAME_CTL_SHORT_SSID_PRESENT |
FD_FRAME_CTL_LENGTH_PRESENT |
FD_FRAME_CTL_CAP_PRESENT;
total_len += 4 + 1 + 2;
/* Fill primary channel information for 6 GHz channels with over 20 MHz
* bandwidth, if the primary channel is not a PSC */
if (is_6ghz_op_class(hapd->iconf->op_class) &&
!is_6ghz_psc_frequency(ieee80211_chan_to_freq(
NULL, hapd->iconf->op_class,
hapd->iconf->channel)) &&
op_class_to_bandwidth(hapd->iconf->op_class) > 20) {
ctl |= FD_FRAME_CTL_PRI_CHAN_PRESENT;
total_len += 2;
}
/* Check for optional subfields and calculate length */
if (wpa_auth_write_fd_rsn_info(hapd->wpa_auth, fd_rsn_info)) {
ctl |= FD_FRAME_CTL_RSN_INFO_PRESENT;
total_len += sizeof(fd_rsn_info);
}
mobility_domain = hostapd_wpa_ie(hapd, WLAN_EID_MOBILITY_DOMAIN);
if (mobility_domain) {
ctl |= FD_FRAME_CTL_MD_PRESENT;
total_len += 3;
}
total_len += hostapd_eid_rnr_len(hapd, WLAN_FC_STYPE_ACTION, true);
pos = hostapd_eid_fils_indic(hapd, buf, 0);
buf_len = pos - buf;
total_len += buf_len;
/* he_elem_len() may return too large a value for FD frame, but that is
* fine here since this is used as the maximum length of the buffer. */
total_len += he_elem_len(hapd);
head = os_zalloc(total_len);
if (!head)
return NULL;
head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_ACTION);
os_memset(head->da, 0xff, ETH_ALEN);
os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
head->u.action.category = WLAN_ACTION_PUBLIC;
head->u.action.u.public_action.action = WLAN_PA_FILS_DISCOVERY;
pos = &head->u.action.u.public_action.variable[0];
/* FILS Discovery Information field */
/* FILS Discovery Frame Control */
WPA_PUT_LE16(pos, ctl);
pos += 2;
/* Hardware or low-level driver will fill in the Timestamp value */
pos += 8;
/* Beacon Interval */
WPA_PUT_LE16(pos, hapd->iconf->beacon_int);
pos += 2;
/* Short SSID */
WPA_PUT_LE32(pos, hapd->conf->ssid.short_ssid);
pos += sizeof(hapd->conf->ssid.short_ssid);
/* Store position of FILS discovery information element Length field */
length_pos = pos++;
/* FD Capability */
WPA_PUT_LE16(pos, hostapd_fils_discovery_cap(hapd));
pos += 2;
/* Operating Class and Primary Channel - if a 6 GHz chan is non PSC */
if (ctl & FD_FRAME_CTL_PRI_CHAN_PRESENT) {
*pos++ = hapd->iconf->op_class;
*pos++ = hapd->iconf->channel;
}
/* AP Configuration Sequence Number - not present */
/* Access Network Options - not present */
/* FD RSN Information */
if (ctl & FD_FRAME_CTL_RSN_INFO_PRESENT) {
os_memcpy(pos, fd_rsn_info, sizeof(fd_rsn_info));
pos += sizeof(fd_rsn_info);
}
/* Channel Center Frequency Segment 1 - not present */
/* Mobility Domain */
if (ctl & FD_FRAME_CTL_MD_PRESENT) {
os_memcpy(pos, &mobility_domain[2], 3);
pos += 3;
}
/* Fill in the Length field value */
*length_pos = pos - (length_pos + 1);
pos = hostapd_eid_rnr(hapd, pos, WLAN_FC_STYPE_ACTION, true);
/* FILS Indication element */
if (buf_len) {
os_memcpy(pos, buf, buf_len);
pos += buf_len;
}
if (is_6ghz_op_class(hapd->iconf->op_class))
pos = hostapd_eid_txpower_envelope(hapd, pos);
*len = pos - (u8 *) head;
wpa_hexdump(MSG_DEBUG, "FILS Discovery frame template",
head, pos - (u8 *) head);
return (u8 *) head;
}
/* Configure FILS Discovery frame transmission parameters */
static u8 * hostapd_fils_discovery(struct hostapd_data *hapd,
struct wpa_driver_ap_params *params)
{
params->fd_max_int = hapd->conf->fils_discovery_max_int;
if (is_6ghz_op_class(hapd->iconf->op_class) &&
params->fd_max_int > FD_MAX_INTERVAL_6GHZ)
params->fd_max_int = FD_MAX_INTERVAL_6GHZ;
params->fd_min_int = hapd->conf->fils_discovery_min_int;
if (params->fd_min_int > params->fd_max_int)
params->fd_min_int = params->fd_max_int;
if (params->fd_max_int)
return hostapd_gen_fils_discovery(hapd,
&params->fd_frame_tmpl_len);
return NULL;
}
#endif /* CONFIG_FILS */
int ieee802_11_build_ap_params(struct hostapd_data *hapd,
struct wpa_driver_ap_params *params)
{
struct ieee80211_mgmt *head = NULL;
u8 *tail = NULL;
size_t head_len = 0, tail_len = 0;
u8 *resp = NULL;
size_t resp_len = 0;
#ifdef NEED_AP_MLME
u16 capab_info;
u8 *pos, *tailpos, *tailend, *csa_pos;
bool complete = false;
#endif /* NEED_AP_MLME */
os_memset(params, 0, sizeof(*params));
#ifdef NEED_AP_MLME
#define BEACON_HEAD_BUF_SIZE 256
#define BEACON_TAIL_BUF_SIZE 1500
head = os_zalloc(BEACON_HEAD_BUF_SIZE);
tail_len = BEACON_TAIL_BUF_SIZE;
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_beacon_ie)
tail_len += wpabuf_len(hapd->wps_beacon_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_beacon_ie)
tail_len += wpabuf_len(hapd->p2p_beacon_ie);
#endif /* CONFIG_P2P */
#ifdef CONFIG_FST
if (hapd->iface->fst_ies)
tail_len += wpabuf_len(hapd->iface->fst_ies);
#endif /* CONFIG_FST */
if (hapd->conf->vendor_elements)
tail_len += wpabuf_len(hapd->conf->vendor_elements);
#ifdef CONFIG_IEEE80211AC
if (hapd->conf->vendor_vht) {
tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
2 + sizeof(struct ieee80211_vht_operation);
}
#endif /* CONFIG_IEEE80211AC */
tail_len += he_elem_len(hapd);
#ifdef CONFIG_IEEE80211BE
if (hapd->iconf->ieee80211be && !hapd->conf->disable_11be) {
tail_len += hostapd_eid_eht_capab_len(hapd, IEEE80211_MODE_AP);
tail_len += 3 + sizeof(struct ieee80211_eht_operation);
if (hapd->iconf->punct_bitmap)
tail_len += EHT_OPER_DISABLED_SUBCHAN_BITMAP_SIZE;
/*
* TODO: Multi-Link element has variable length and can be
* long based on the common info and number of per
* station profiles. For now use 256.
*/
if (hapd->conf->mld_ap) {
tail_len += 256;
/* for Max Channel Switch Time element during channel
* switch */
tail_len += 6;
}
}
#endif /* CONFIG_IEEE80211BE */
if (hapd->iconf->mbssid == ENHANCED_MBSSID_ENABLED &&
hapd == hostapd_mbssid_get_tx_bss(hapd))
tail_len += 5; /* Multiple BSSID Configuration element */
tail_len += hostapd_eid_rnr_len(hapd, WLAN_FC_STYPE_BEACON, true);
tail_len += hostapd_mbo_ie_len(hapd);
tail_len += hostapd_eid_owe_trans_len(hapd);
tail_len += hostapd_eid_dpp_cc_len(hapd);
tail_len += hostapd_get_rsne_override_len(hapd);
tail_len += hostapd_get_rsne_override_2_len(hapd);
tail_len += hostapd_get_rsnxe_override_len(hapd);
tailpos = tail = os_malloc(tail_len);
if (head == NULL || tail == NULL) {
wpa_printf(MSG_ERROR, "Failed to set beacon data");
os_free(head);
os_free(tail);
return -1;
}
tailend = tail + tail_len;
head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_BEACON);
head->duration = host_to_le16(0);
os_memset(head->da, 0xff, ETH_ALEN);
os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
head->u.beacon.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
capab_info = hostapd_own_capab_info(hapd);
head->u.beacon.capab_info = host_to_le16(capab_info);
pos = &head->u.beacon.variable[0];
/* SSID */
*pos++ = WLAN_EID_SSID;
if (hapd->conf->ignore_broadcast_ssid == 2) {
/* clear the data, but keep the correct length of the SSID */
*pos++ = hapd->conf->ssid.ssid_len;
os_memset(pos, 0, hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
} else if (hapd->conf->ignore_broadcast_ssid) {
*pos++ = 0; /* empty SSID */
} else {
*pos++ = hapd->conf->ssid.ssid_len;
os_memcpy(pos, hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
}
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
head_len = pos - (u8 *) head;
tailpos = hostapd_eid_country(hapd, tailpos, tailend - tailpos);
/* Power Constraint element */
tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);
/* CSA IE */
csa_pos = hostapd_eid_csa(hapd, tailpos);
if (csa_pos != tailpos)
hapd->cs_c_off_beacon = csa_pos - tail - 1;
tailpos = csa_pos;
/* ERP Information element */
tailpos = hostapd_eid_erp_info(hapd, tailpos);
/* Extended supported rates */
tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
tailpos = hostapd_get_rsne(hapd, tailpos, tailend - tailpos);
tailpos = hostapd_eid_bss_load(hapd, tailpos, tailend - tailpos);
tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
tailend - tailpos);
tailpos = hostapd_get_mde(hapd, tailpos, tailend - tailpos);
/* eCSA IE */
csa_pos = hostapd_eid_ecsa(hapd, tailpos);
if (csa_pos != tailpos)
hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1;
tailpos = csa_pos;
tailpos = hostapd_eid_supported_op_classes(hapd, tailpos);
tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
tailpos = hostapd_eid_ht_operation(hapd, tailpos);
if (hapd->iconf->mbssid && hapd->iconf->num_bss > 1) {
if (ieee802_11_build_ap_params_mbssid(hapd, params)) {
os_free(head);
os_free(tail);
wpa_printf(MSG_ERROR,
"MBSSID: Failed to set beacon data");
return -1;
}
complete = hapd->iconf->mbssid == MBSSID_ENABLED ||
(hapd->iconf->mbssid == ENHANCED_MBSSID_ENABLED &&
params->mbssid_elem_count == 1);
}
tailpos = hostapd_eid_ext_capab(hapd, tailpos, complete);
/*
* TODO: Time Advertisement element should only be included in some
* DTIM Beacon frames.
*/
tailpos = hostapd_eid_time_adv(hapd, tailpos);
tailpos = hostapd_eid_interworking(hapd, tailpos);
tailpos = hostapd_eid_adv_proto(hapd, tailpos);
tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
#ifdef CONFIG_FST
if (hapd->iface->fst_ies) {
os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
wpabuf_len(hapd->iface->fst_ies));
tailpos += wpabuf_len(hapd->iface->fst_ies);
}
#endif /* CONFIG_FST */
#ifdef CONFIG_IEEE80211AC
if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac &&
!is_6ghz_op_class(hapd->iconf->op_class)) {
tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0);
tailpos = hostapd_eid_vht_operation(hapd, tailpos);
tailpos = hostapd_eid_txpower_envelope(hapd, tailpos);
}
#endif /* CONFIG_IEEE80211AC */
#ifdef CONFIG_IEEE80211AX
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax &&
is_6ghz_op_class(hapd->iconf->op_class))
tailpos = hostapd_eid_txpower_envelope(hapd, tailpos);
#endif /* CONFIG_IEEE80211AX */
tailpos = hostapd_eid_chsw_wrapper(hapd, tailpos);
tailpos = hostapd_eid_rnr(hapd, tailpos, WLAN_FC_STYPE_BEACON, true);
tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0);
/* Max Channel Switch Time element */
tailpos = hostapd_eid_max_cs_time(hapd, tailpos);
tailpos = hostapd_get_rsnxe(hapd, tailpos, tailend - tailpos);
tailpos = hostapd_eid_mbssid_config(hapd, tailpos,
params->mbssid_elem_count);
#ifdef CONFIG_IEEE80211AX
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax) {
u8 *cca_pos;
tailpos = hostapd_eid_he_capab(hapd, tailpos,
IEEE80211_MODE_AP);
tailpos = hostapd_eid_he_operation(hapd, tailpos);
/* BSS Color Change Announcement element */
cca_pos = hostapd_eid_cca(hapd, tailpos);
if (cca_pos != tailpos)
hapd->cca_c_off_beacon = cca_pos - tail - 2;
tailpos = cca_pos;
tailpos = hostapd_eid_spatial_reuse(hapd, tailpos);
tailpos = hostapd_eid_he_mu_edca_parameter_set(hapd, tailpos);
tailpos = hostapd_eid_he_6ghz_band_cap(hapd, tailpos);
}
#endif /* CONFIG_IEEE80211AX */
#ifdef CONFIG_IEEE80211BE
if (hapd->iconf->ieee80211be && !hapd->conf->disable_11be) {
if (hapd->conf->mld_ap)
tailpos = hostapd_eid_eht_ml_beacon(hapd, NULL,
tailpos, false);
tailpos = hostapd_eid_eht_capab(hapd, tailpos,
IEEE80211_MODE_AP);
tailpos = hostapd_eid_eht_operation(hapd, tailpos);
}
#endif /* CONFIG_IEEE80211BE */
#ifdef CONFIG_IEEE80211AC
if (hapd->conf->vendor_vht)
tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
#endif /* CONFIG_IEEE80211AC */
/* WPA / OSEN */
tailpos = hostapd_get_wpa_ie(hapd, tailpos, tailend - tailpos);
tailpos = hostapd_get_osen_ie(hapd, tailpos, tailend - tailpos);
/* Wi-Fi Alliance WMM */
tailpos = hostapd_eid_wmm(hapd, tailpos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
wpabuf_len(hapd->wps_beacon_ie));
tailpos += wpabuf_len(hapd->wps_beacon_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
wpabuf_len(hapd->p2p_beacon_ie));
tailpos += wpabuf_len(hapd->p2p_beacon_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_HS20
tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
#endif /* CONFIG_HS20 */
tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos);
tailpos = hostapd_eid_owe_trans(hapd, tailpos,
tail + tail_len - tailpos);
tailpos = hostapd_eid_dpp_cc(hapd, tailpos, tail + tail_len - tailpos);
tailpos = hostapd_get_rsne_override(hapd, tailpos,
tail + tail_len - tailpos);
tailpos = hostapd_get_rsne_override_2(hapd, tailpos,
tail + tail_len - tailpos);
tailpos = hostapd_get_rsnxe_override(hapd, tailpos,
tail + tail_len - tailpos);
if (hapd->conf->vendor_elements) {
os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
wpabuf_len(hapd->conf->vendor_elements));
tailpos += wpabuf_len(hapd->conf->vendor_elements);
}
tail_len = tailpos > tail ? tailpos - tail : 0;
resp = hostapd_probe_resp_offloads(hapd, &resp_len);
#endif /* NEED_AP_MLME */
/* If key management offload is enabled, configure PSK to the driver. */
if (wpa_key_mgmt_wpa_psk_no_sae(hapd->conf->wpa_key_mgmt) &&
(hapd->iface->drv_flags2 &
WPA_DRIVER_FLAGS2_4WAY_HANDSHAKE_AP_PSK)) {
if (hapd->conf->ssid.wpa_psk && hapd->conf->ssid.wpa_psk_set) {
os_memcpy(params->psk, hapd->conf->ssid.wpa_psk->psk,
PMK_LEN);
params->psk_len = PMK_LEN;
} else if (hapd->conf->ssid.wpa_passphrase &&
pbkdf2_sha1(hapd->conf->ssid.wpa_passphrase,
hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len, 4096,
params->psk, PMK_LEN) == 0) {
params->psk_len = PMK_LEN;
}
}
#ifdef CONFIG_SAE
/* If SAE offload is enabled, provide password to lower layer for
* SAE authentication and PMK generation.
*/
if (wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt |
hapd->conf->rsn_override_key_mgmt |
hapd->conf->rsn_override_key_mgmt_2) &&
(hapd->iface->drv_flags2 & WPA_DRIVER_FLAGS2_SAE_OFFLOAD_AP)) {
if (hostapd_sae_pk_in_use(hapd->conf)) {
wpa_printf(MSG_ERROR,
"SAE PK not supported with SAE offload");
return -1;
}
if (hostapd_sae_pw_id_in_use(hapd->conf)) {
wpa_printf(MSG_ERROR,
"SAE Password Identifiers not supported with SAE offload");
return -1;
}
params->sae_password = sae_get_password(hapd, NULL, NULL, NULL,
NULL, NULL);
if (!params->sae_password) {
wpa_printf(MSG_ERROR, "SAE password not configured for offload");
return -1;
}
}
#endif /* CONFIG_SAE */
params->head = (u8 *) head;
params->head_len = head_len;
params->tail = tail;
params->tail_len = tail_len;
params->proberesp = resp;
params->proberesp_len = resp_len;
params->dtim_period = hapd->conf->dtim_period;
params->beacon_int = hapd->iconf->beacon_int;
params->basic_rates = hapd->iface->basic_rates;
params->beacon_rate = hapd->iconf->beacon_rate;
params->rate_type = hapd->iconf->rate_type;
params->ssid = hapd->conf->ssid.ssid;
params->ssid_len = hapd->conf->ssid.ssid_len;
if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
(WPA_PROTO_WPA | WPA_PROTO_RSN))
params->pairwise_ciphers = hapd->conf->wpa_pairwise |
hapd->conf->rsn_pairwise;
else if (hapd->conf->wpa & WPA_PROTO_RSN)
params->pairwise_ciphers = hapd->conf->rsn_pairwise;
else if (hapd->conf->wpa & WPA_PROTO_WPA)
params->pairwise_ciphers = hapd->conf->wpa_pairwise;
params->group_cipher = hapd->conf->wpa_group;
params->key_mgmt_suites = hapd->conf->wpa_key_mgmt |
hapd->conf->rsn_override_key_mgmt |
hapd->conf->rsn_override_key_mgmt_2;
params->auth_algs = hapd->conf->auth_algs;
params->wpa_version = hapd->conf->wpa;
params->privacy = hapd->conf->wpa;
#ifdef CONFIG_WEP
params->privacy |= hapd->conf->ssid.wep.keys_set ||
(hapd->conf->ieee802_1x &&
(hapd->conf->default_wep_key_len ||
hapd->conf->individual_wep_key_len));
#endif /* CONFIG_WEP */
switch (hapd->conf->ignore_broadcast_ssid) {
case 0:
params->hide_ssid = NO_SSID_HIDING;
break;
case 1:
params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
break;
case 2:
params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
break;
}
params->isolate = hapd->conf->isolate;
#ifdef NEED_AP_MLME
params->cts_protect = !!(ieee802_11_erp_info(hapd) &
ERP_INFO_USE_PROTECTION);
params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
hapd->iconf->preamble == SHORT_PREAMBLE;
if (hapd->iface->current_mode &&
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
params->short_slot_time =
hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
else
params->short_slot_time = -1;
if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
params->ht_opmode = -1;
else
params->ht_opmode = hapd->iface->ht_op_mode;
#endif /* NEED_AP_MLME */
params->interworking = hapd->conf->interworking;
if (hapd->conf->interworking &&
!is_zero_ether_addr(hapd->conf->hessid))
params->hessid = hapd->conf->hessid;
params->access_network_type = hapd->conf->access_network_type;
params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
#ifdef CONFIG_P2P
params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
#endif /* CONFIG_P2P */
#ifdef CONFIG_HS20
params->disable_dgaf = hapd->conf->disable_dgaf;
if (hapd->conf->osen) {
params->privacy = 1;
params->osen = 1;
}
#endif /* CONFIG_HS20 */
params->multicast_to_unicast = hapd->conf->multicast_to_unicast;
params->pbss = hapd->conf->pbss;
if (hapd->conf->ftm_responder) {
if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_FTM_RESPONDER) {
params->ftm_responder = 1;
params->lci = hapd->iface->conf->lci;
params->civic = hapd->iface->conf->civic;
} else {
wpa_printf(MSG_WARNING,
"Not configuring FTM responder as the driver doesn't advertise support for it");
}
}
#ifdef CONFIG_IEEE80211BE
if (hapd->conf->mld_ap && hapd->iconf->ieee80211be &&
!hapd->conf->disable_11be) {
params->mld_ap = true;
params->mld_link_id = hapd->mld_link_id;
}
#endif /* CONFIG_IEEE80211BE */
return 0;
}
void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params)
{
os_free(params->tail);
params->tail = NULL;
os_free(params->head);
params->head = NULL;
os_free(params->proberesp);
params->proberesp = NULL;
os_free(params->mbssid_elem);
params->mbssid_elem = NULL;
os_free(params->mbssid_elem_offset);
params->mbssid_elem_offset = NULL;
os_free(params->rnr_elem);
params->rnr_elem = NULL;
os_free(params->rnr_elem_offset);
params->rnr_elem_offset = NULL;
#ifdef CONFIG_FILS
os_free(params->fd_frame_tmpl);
params->fd_frame_tmpl = NULL;
#endif /* CONFIG_FILS */
#ifdef CONFIG_IEEE80211AX
os_free(params->ubpr.unsol_bcast_probe_resp_tmpl);
params->ubpr.unsol_bcast_probe_resp_tmpl = NULL;
#endif /* CONFIG_IEEE80211AX */
os_free(params->allowed_freqs);
params->allowed_freqs = NULL;
}
static int __ieee802_11_set_beacon(struct hostapd_data *hapd)
{
struct wpa_driver_ap_params params;
struct hostapd_freq_params freq;
struct hostapd_iface *iface = hapd->iface;
struct hostapd_config *iconf = iface->conf;
struct hostapd_hw_modes *cmode = iface->current_mode;
struct wpabuf *beacon, *proberesp, *assocresp;
bool twt_he_responder = false;
int res, ret = -1, i;
struct hostapd_hw_modes *mode;
if (!hapd->drv_priv) {
wpa_printf(MSG_ERROR, "Interface is disabled");
return -1;
}
if (hapd->csa_in_progress) {
wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
return -1;
}
hapd->beacon_set_done = 1;
if (ieee802_11_build_ap_params(hapd, &params) < 0)
return -1;
if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
0)
goto fail;
params.beacon_ies = beacon;
params.proberesp_ies = proberesp;
params.assocresp_ies = assocresp;
params.reenable = hapd->reenable_beacon;
#ifdef CONFIG_IEEE80211AX
params.he_spr_ctrl = hapd->iface->conf->spr.sr_control;
params.he_spr_non_srg_obss_pd_max_offset =
hapd->iface->conf->spr.non_srg_obss_pd_max_offset;
params.he_spr_srg_obss_pd_min_offset =
hapd->iface->conf->spr.srg_obss_pd_min_offset;
params.he_spr_srg_obss_pd_max_offset =
hapd->iface->conf->spr.srg_obss_pd_max_offset;
os_memcpy(params.he_spr_bss_color_bitmap,
hapd->iface->conf->spr.srg_bss_color_bitmap, 8);
os_memcpy(params.he_spr_partial_bssid_bitmap,
hapd->iface->conf->spr.srg_partial_bssid_bitmap, 8);
params.he_bss_color_disabled =
hapd->iface->conf->he_op.he_bss_color_disabled;
params.he_bss_color_partial =
hapd->iface->conf->he_op.he_bss_color_partial;
params.he_bss_color = hapd->iface->conf->he_op.he_bss_color;
twt_he_responder = hostapd_get_he_twt_responder(hapd,
IEEE80211_MODE_AP);
params.ubpr.unsol_bcast_probe_resp_tmpl =
hostapd_unsol_bcast_probe_resp(hapd, &params.ubpr);
#endif /* CONFIG_IEEE80211AX */
params.twt_responder =
twt_he_responder || hostapd_get_ht_vht_twt_responder(hapd);
hapd->reenable_beacon = 0;
#ifdef CONFIG_SAE
params.sae_pwe = hapd->conf->sae_pwe;
#endif /* CONFIG_SAE */
#ifdef CONFIG_FILS
params.fd_frame_tmpl = hostapd_fils_discovery(hapd, &params);
#endif /* CONFIG_FILS */
#ifdef CONFIG_IEEE80211BE
params.punct_bitmap = iconf->punct_bitmap;
#endif /* CONFIG_IEEE80211BE */
if (cmode &&
hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq,
iconf->channel, iconf->enable_edmg,
iconf->edmg_channel, iconf->ieee80211n,
iconf->ieee80211ac, iconf->ieee80211ax,
iconf->ieee80211be,
iconf->secondary_channel,
hostapd_get_oper_chwidth(iconf),
hostapd_get_oper_centr_freq_seg0_idx(iconf),
hostapd_get_oper_centr_freq_seg1_idx(iconf),
cmode->vht_capab,
&cmode->he_capab[IEEE80211_MODE_AP],
&cmode->eht_capab[IEEE80211_MODE_AP],
hostapd_get_punct_bitmap(hapd)) == 0) {
freq.link_id = -1;
#ifdef CONFIG_IEEE80211BE
if (hapd->conf->mld_ap)
freq.link_id = hapd->mld_link_id;
#endif /* CONFIG_IEEE80211BE */
params.freq = &freq;
}
for (i = 0; i < hapd->iface->num_hw_features; i++) {
mode = &hapd->iface->hw_features[i];
if (iconf->hw_mode != HOSTAPD_MODE_IEEE80211ANY &&
iconf->hw_mode != mode->mode)
continue;
hostapd_get_hw_mode_any_channels(hapd, mode,
!(iconf->acs_freq_list.num ||
iconf->acs_ch_list.num),
true, &params.allowed_freqs);
}
res = hostapd_drv_set_ap(hapd, &params);
hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
if (res)
wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
else
ret = 0;
fail:
ieee802_11_free_ap_params(&params);
return ret;
}
void ieee802_11_set_beacon_per_bss_only(struct hostapd_data *hapd)
{
__ieee802_11_set_beacon(hapd);
}
#ifdef CONFIG_IEEE80211BE
static int hostapd_get_probe_resp_tmpl(struct hostapd_data *hapd,
struct probe_resp_params *params,
bool is_ml_sta_info)
{
os_memset(params, 0, sizeof(*params));
hostapd_gen_probe_resp(hapd, params);
if (!params->resp)
return -1;
/* The caller takes care of freeing params->resp. */
return 0;
}
static bool is_restricted_eid_in_sta_profile(u8 eid, bool tx_vap)
{
switch (eid) {
case WLAN_EID_TIM:
case WLAN_EID_BSS_MAX_IDLE_PERIOD:
case WLAN_EID_MULTIPLE_BSSID:
case WLAN_EID_REDUCED_NEIGHBOR_REPORT:
case WLAN_EID_NEIGHBOR_REPORT:
return true;
case WLAN_EID_SSID:
/* SSID is not restricted for non-transmitted BSSID */
return tx_vap;
default:
return false;
}
}
static bool is_restricted_ext_eid_in_sta_profile(u8 ext_id)
{
switch (ext_id) {
case WLAN_EID_EXT_MULTI_LINK:
return true;
default:
return false;
}
}
/* Create the link STA profiles based on inheritance from the reporting
* profile.
*
* NOTE: The same function is used for length calculation as well as filling
* data in the given buffer. This avoids risk of not updating the length
* function but filling function or vice versa.
*/
static size_t hostapd_add_sta_profile(struct ieee80211_mgmt *link_fdata,
size_t link_data_len,
struct ieee80211_mgmt *own_fdata,
size_t own_data_len,
u8 *sta_profile, bool tx_vap)
{
const struct element *link_elem;
size_t sta_profile_len = 0;
const u8 *link_elem_data;
u8 link_ele_len;
u8 *link_data;
const struct element *own_elem;
u8 link_eid, own_eid, own_ele_len;
const u8 *own_elem_data;
u8 *own_data;
bool is_ext;
bool ie_found;
u8 non_inherit_ele_ext_list[256] = { 0 };
u8 non_inherit_ele_ext_list_len = 0;
u8 non_inherit_ele_list[256] = { 0 };
u8 non_inherit_ele_list_len = 0;
u8 num_link_elem_vendor_ies = 0, num_own_elem_vendor_ies = 0;
bool add_vendor_ies = false, is_identical_vendor_ies = true;
/* The bitmap of parsed EIDs. There are 256 EIDs and ext EIDs, so 32
* bytes to store the bitmaps. */
u8 parsed_eid_bmap[32] = { 0 }, parsed_ext_eid_bmap[32] = { 0 };
/* extra len used in the logic includes the element id and len */
u8 extra_len = 2;
/* Include len for capab info */
sta_profile_len += sizeof(le16);
if (sta_profile) {
os_memcpy(sta_profile, &link_fdata->u.probe_resp.capab_info,
sizeof(le16));
sta_profile += sizeof(le16);
}
own_data = own_fdata->u.probe_resp.variable;
link_data = link_fdata->u.probe_resp.variable;
/* The below logic takes the reporting BSS data and reported BSS data
* and performs intersection to build the STA profile of the reported
* BSS. Certain elements are not added to the STA profile as
* recommended in standard. Matching element information in the
* reporting BSS profile are ignored in the STA profile. Remaining
* elements pertaining to the STA profile are appended at the end. */
for_each_element(own_elem, own_data, own_data_len) {
is_ext = false;
ie_found = false;
/* Pick one of own elements and get its EID and length */
own_elem_data = own_elem->data;
own_ele_len = own_elem->datalen;
if (own_elem->id == WLAN_EID_EXTENSION) {
is_ext = true;
own_eid = *(own_elem_data);
if (is_restricted_ext_eid_in_sta_profile(own_eid))
continue;
} else {
own_eid = own_elem->id;
if (is_restricted_eid_in_sta_profile(own_eid, tx_vap))
continue;
}
for_each_element(link_elem, link_data, link_data_len) {
/* If the element type mismatches, do not consider
* this link element for comparison. */
if ((link_elem->id == WLAN_EID_EXTENSION &&
!is_ext) ||
(is_ext && link_elem->id != WLAN_EID_EXTENSION))
continue;
/* Comparison can be done so get the link element and
* its EID and length. */
link_elem_data = link_elem->data;
link_ele_len = link_elem->datalen;
if (link_elem->id == WLAN_EID_EXTENSION)
link_eid = *(link_elem_data);
else
link_eid = link_elem->id;
/* Ignore if EID does not match */
if (own_eid != link_eid)
continue;
ie_found = true;
/* Ignore if the contents is identical. */
if (own_ele_len == link_ele_len &&
os_memcmp(own_elem->data, link_elem->data,
own_ele_len) == 0) {
if (own_eid == WLAN_EID_VENDOR_SPECIFIC) {
is_identical_vendor_ies = true;
num_own_elem_vendor_ies++;
}
continue;
}
/* No need to include this non-matching Vendor Specific
* element explicitly at this point. */
if (own_eid == WLAN_EID_VENDOR_SPECIFIC) {
is_identical_vendor_ies = false;
continue;
}
/* This element is present in the reported profile
* as well as present in the reporting profile.
* However, there is a mismatch in the contents and
* hence, include this in the per STA profile. */
sta_profile_len += link_ele_len + extra_len;
if (sta_profile) {
os_memcpy(sta_profile,
link_elem->data - extra_len,
link_ele_len + extra_len);
sta_profile += link_ele_len + extra_len;
}
/* Update the parsed EIDs bitmap */
if (is_ext)
parsed_ext_eid_bmap[own_eid / 8] |=
BIT(own_eid % 8);
else
parsed_eid_bmap[own_eid / 8] |=
BIT(own_eid % 8);
break;
}
/* We found at least one Vendor Specific element in reporting
* link which is not same (or present) in the reported link. We
* need to include all Vendor Specific elements from the
* reported link. */
if (!is_identical_vendor_ies)
add_vendor_ies = true;
/* This is a unique element in the reporting profile which is
* not present in the reported profile. Update the
* non-inheritance list. */
if (!ie_found) {
u8 idx;
if (is_ext) {
idx = non_inherit_ele_ext_list_len++;
non_inherit_ele_ext_list[idx] = own_eid;
} else {
idx = non_inherit_ele_list_len++;
non_inherit_ele_list[idx] = own_eid;
}
}
}
/* Parse the remaining elements in the reported profile */
for_each_element(link_elem, link_data, link_data_len) {
link_elem_data = link_elem->data;
link_ele_len = link_elem->datalen;
/* No need to check this Vendor Specific element at this point.
* Just take the count and continue. */
if (link_elem->id == WLAN_EID_VENDOR_SPECIFIC) {
num_link_elem_vendor_ies++;
continue;
}
if (link_elem->id == WLAN_EID_EXTENSION) {
link_eid = *(link_elem_data);
if ((parsed_ext_eid_bmap[link_eid / 8] &
BIT(link_eid % 8)) ||
is_restricted_ext_eid_in_sta_profile(link_eid))
continue;
} else {
link_eid = link_elem->id;
if ((parsed_eid_bmap[link_eid / 8] &
BIT(link_eid % 8)) ||
is_restricted_eid_in_sta_profile(link_eid, tx_vap))
continue;
}
sta_profile_len += link_ele_len + extra_len;
if (sta_profile) {
os_memcpy(sta_profile, link_elem_data - extra_len,
link_ele_len + extra_len);
sta_profile += link_ele_len + extra_len;
}
}
/* Handle Vendor Specific elements
* Add all the Vendor Specific elements of the reported link if
* a. There is at least one non-matching Vendor Specific element, or
* b. The number of Vendor Specific elements in reporting and reported
* link is not same. */
if (add_vendor_ies ||
num_own_elem_vendor_ies != num_link_elem_vendor_ies) {
for_each_element(link_elem, link_data, link_data_len) {
link_elem_data = link_elem->data;
link_ele_len = link_elem->datalen;
if (link_elem->id != WLAN_EID_VENDOR_SPECIFIC)
continue;
sta_profile_len += link_ele_len + extra_len;
if (sta_profile) {
os_memcpy(sta_profile,
link_elem_data - extra_len,
link_ele_len + extra_len);
sta_profile += link_ele_len + extra_len;
}
}
}
/* Handle non-inheritance
* Non-Inheritance element:
* Element ID Ext: 1 octet
* Length: 1 octet
* Ext tag number: 1 octet
* Length of Elements ID list: 1 octet
* Elements ID list: variable
* Length of Elements ID Extension list: 1 octet
* Elements ID extensions list: variable
*/
if (non_inherit_ele_list_len || non_inherit_ele_ext_list_len)
sta_profile_len += 3 + 2 + non_inherit_ele_list_len +
non_inherit_ele_ext_list_len;
if (sta_profile &&
(non_inherit_ele_list_len || non_inherit_ele_ext_list_len)) {
*sta_profile++ = WLAN_EID_EXTENSION;
*sta_profile++ = non_inherit_ele_list_len +
non_inherit_ele_ext_list_len + 3;
*sta_profile++ = WLAN_EID_EXT_NON_INHERITANCE;
*sta_profile++ = non_inherit_ele_list_len;
os_memcpy(sta_profile, non_inherit_ele_list,
non_inherit_ele_list_len);
sta_profile += non_inherit_ele_list_len;
*sta_profile++ = non_inherit_ele_ext_list_len;
os_memcpy(sta_profile, non_inherit_ele_ext_list,
non_inherit_ele_ext_list_len);
sta_profile += non_inherit_ele_ext_list_len;
}
return sta_profile_len;
}
static u8 * hostapd_gen_sta_profile(struct ieee80211_mgmt *link_data,
size_t link_data_len,
struct ieee80211_mgmt *own_data,
size_t own_data_len,
size_t *sta_profile_len, bool tx_vap)
{
u8 *sta_profile;
/* Get the length first */
*sta_profile_len = hostapd_add_sta_profile(link_data, link_data_len,
own_data, own_data_len,
NULL, tx_vap);
if (!(*sta_profile_len) || *sta_profile_len > EHT_ML_MAX_STA_PROF_LEN)
return NULL;
sta_profile = os_zalloc(*sta_profile_len);
if (!sta_profile)
return NULL;
/* Now fill in the data */
hostapd_add_sta_profile(link_data, link_data_len, own_data,
own_data_len, sta_profile, tx_vap);
/* The caller takes care of freeing the returned sta_profile */
return sta_profile;
}
static void hostapd_gen_per_sta_profiles(struct hostapd_data *hapd)
{
bool tx_vap = hapd == hostapd_mbssid_get_tx_bss(hapd);
size_t link_data_len, sta_profile_len;
size_t own_data_len;
struct probe_resp_params link_params;
struct probe_resp_params own_params;
struct ieee80211_mgmt *link_data;
struct ieee80211_mgmt *own_data;
struct mld_link_info *link_info;
struct hostapd_data *link_bss;
u8 link_id, *sta_profile;
if (!hapd->conf->mld_ap)
return;
wpa_printf(MSG_DEBUG, "MLD: Generating per STA profiles for MLD %s",
hapd->conf->iface);
wpa_printf(MSG_DEBUG, "MLD: Reporting link %d", hapd->mld_link_id);
/* Generate a Probe Response template for self */
if (hostapd_get_probe_resp_tmpl(hapd, &own_params, false)) {
wpa_printf(MSG_ERROR,
"MLD: Error in building per STA profiles");
return;
}
own_data = own_params.resp;
own_data_len = own_params.resp_len;
/* Consider the length of the variable fields */
own_data_len -= offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
for_each_mld_link(link_bss, hapd) {
if (link_bss == hapd || !link_bss->started)
continue;
link_id = link_bss->mld_link_id;
if (link_id >= MAX_NUM_MLD_LINKS)
continue;
sta_profile = NULL;
sta_profile_len = 0;
/* Generate a Probe Response frame template for partner link */
if (hostapd_get_probe_resp_tmpl(link_bss, &link_params, true)) {
wpa_printf(MSG_ERROR,
"MLD: Could not get link STA probe response template for link %d",
link_id);
continue;
}
link_data = link_params.resp;
link_data_len = link_params.resp_len;
/* Consider length of the variable fields */
link_data_len -= offsetof(struct ieee80211_mgmt,
u.probe_resp.variable);
sta_profile = hostapd_gen_sta_profile(link_data, link_data_len,
own_data, own_data_len,
&sta_profile_len, tx_vap);
if (!sta_profile) {
wpa_printf(MSG_ERROR,
"MLD: Could not generate link STA profile for link %d",
link_id);
continue;
}
link_info = &hapd->partner_links[link_id];
link_info->valid = true;
os_free(link_info->resp_sta_profile);
link_info->resp_sta_profile_len = sta_profile_len;
link_info->resp_sta_profile = os_memdup(sta_profile,
sta_profile_len);
if (!link_info->resp_sta_profile)
link_info->resp_sta_profile_len = 0;
os_memcpy(link_info->local_addr, link_bss->own_addr, ETH_ALEN);
wpa_printf(MSG_DEBUG,
"MLD: Reported link STA info for %d: %u bytes",
link_id, link_info->resp_sta_profile_len);
os_free(sta_profile);
os_free(link_params.resp);
}
os_free(own_params.resp);
}
#endif /* CONFIG_IEEE80211BE */
int ieee802_11_set_beacon(struct hostapd_data *hapd)
{
struct hostapd_iface *iface = hapd->iface;
int ret;
size_t i, j;
bool is_6g, hapd_mld = false;
#ifdef CONFIG_IEEE80211BE
struct hostapd_data *link_bss;
#endif /* CONFIG_IEEE80211BE */
ret = __ieee802_11_set_beacon(hapd);
if (ret != 0)
return ret;
if (!iface->interfaces || iface->interfaces->count <= 1)
return 0;
#ifdef CONFIG_IEEE80211BE
hapd_mld = hapd->conf->mld_ap;
#endif /* CONFIG_IEEE80211BE */
/* Update Beacon frames in case of 6 GHz colocation or AP MLD */
is_6g = is_6ghz_op_class(iface->conf->op_class);
for (j = 0; j < iface->interfaces->count; j++) {
struct hostapd_iface *other;
bool other_iface_6g;
other = iface->interfaces->iface[j];
if (other == iface || !other || !other->conf)
continue;
other_iface_6g = is_6ghz_op_class(other->conf->op_class);
if (is_6g == other_iface_6g && !hapd_mld)
continue;
for (i = 0; i < other->num_bss; i++) {
#ifdef CONFIG_IEEE80211BE
if (is_6g == other_iface_6g &&
!(hapd_mld && other->bss[i]->conf->mld_ap &&
hostapd_is_ml_partner(hapd, other->bss[i])))
continue;
#endif /* CONFIG_IEEE80211BE */
if (other->bss[i] && other->bss[i]->started)
__ieee802_11_set_beacon(other->bss[i]);
}
}
#ifdef CONFIG_IEEE80211BE
if (!hapd_mld)
return 0;
/* Generate per STA profiles for each affiliated APs */
for_each_mld_link(link_bss, hapd)
hostapd_gen_per_sta_profiles(link_bss);
#endif /* CONFIG_IEEE80211BE */
return 0;
}
int ieee802_11_set_beacons(struct hostapd_iface *iface)
{
size_t i;
int ret = 0;
for (i = 0; i < iface->num_bss; i++) {
if (iface->bss[i]->started &&
ieee802_11_set_beacon(iface->bss[i]) < 0)
ret = -1;
}
return ret;
}
/* only update beacons if started */
int ieee802_11_update_beacons(struct hostapd_iface *iface)
{
size_t i;
int ret = 0;
for (i = 0; i < iface->num_bss; i++) {
if (iface->bss[i]->beacon_set_done && iface->bss[i]->started &&
ieee802_11_set_beacon(iface->bss[i]) < 0)
ret = -1;
}
return ret;
}
#endif /* CONFIG_NATIVE_WINDOWS */
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