* Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
* Copyright (c) 2007-2008, Intel Corporation
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
+#include "utils/eloop.h"
#include "common/ieee802_11_defs.h"
-#include "drivers/driver.h"
#include "hostapd.h"
#include "ap_config.h"
#include "sta_info.h"
#include "beacon.h"
#include "ieee802_11.h"
+#include "hw_features.h"
+#include "ap_drv_ops.h"
u8 * hostapd_eid_ht_capabilities(struct hostapd_data *hapd, u8 *eid)
struct ieee80211_ht_capabilities *cap;
u8 *pos = eid;
- if (!hapd->iconf->ieee80211n || !hapd->iface->current_mode)
+ if (!hapd->iconf->ieee80211n || !hapd->iface->current_mode ||
+ hapd->conf->disable_11n)
return eid;
*pos++ = WLAN_EID_HT_CAP;
pos += sizeof(*cap);
+ if (hapd->iconf->obss_interval) {
+ struct ieee80211_obss_scan_parameters *scan_params;
+
+ *pos++ = WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS;
+ *pos++ = sizeof(*scan_params);
+
+ scan_params = (struct ieee80211_obss_scan_parameters *) pos;
+ os_memset(scan_params, 0, sizeof(*scan_params));
+ scan_params->width_trigger_scan_interval =
+ host_to_le16(hapd->iconf->obss_interval);
+
+ /* Fill in default values for remaining parameters
+ * (IEEE Std 802.11-2012, 8.4.2.61 and MIB defval) */
+ scan_params->scan_passive_dwell =
+ host_to_le16(20);
+ scan_params->scan_active_dwell =
+ host_to_le16(10);
+ scan_params->scan_passive_total_per_channel =
+ host_to_le16(200);
+ scan_params->scan_active_total_per_channel =
+ host_to_le16(20);
+ scan_params->channel_transition_delay_factor =
+ host_to_le16(5);
+ scan_params->scan_activity_threshold =
+ host_to_le16(25);
+
+ pos += sizeof(*scan_params);
+ }
+
return pos;
}
struct ieee80211_ht_operation *oper;
u8 *pos = eid;
- if (!hapd->iconf->ieee80211n)
+ if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
return eid;
*pos++ = WLAN_EID_HT_OPERATION;
oper = (struct ieee80211_ht_operation *) pos;
os_memset(oper, 0, sizeof(*oper));
- oper->control_chan = hapd->iconf->channel;
+ oper->primary_chan = hapd->iconf->channel;
oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
if (hapd->iconf->secondary_channel == 1)
oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE |
- HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
+ HT_INFO_HT_PARAM_STA_CHNL_WIDTH;
if (hapd->iconf->secondary_channel == -1)
oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW |
- HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
+ HT_INFO_HT_PARAM_STA_CHNL_WIDTH;
pos += sizeof(*oper);
Set to 2 if only HT STAs are associated in BSS,
however and at least one 20 MHz HT STA is associated
Set to 3 (HT mixed mode) when one or more non-HT STAs are associated
- (currently non-GF HT station is considered as non-HT STA also)
*/
int hostapd_ht_operation_update(struct hostapd_iface *iface)
{
wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X",
__func__, iface->ht_op_mode);
- if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)
+ if (!(iface->ht_op_mode & HT_OPER_OP_MODE_NON_GF_HT_STAS_PRESENT)
&& iface->num_sta_ht_no_gf) {
- iface->ht_op_mode |=
- HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
+ iface->ht_op_mode |= HT_OPER_OP_MODE_NON_GF_HT_STAS_PRESENT;
op_mode_changes++;
} else if ((iface->ht_op_mode &
- HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) &&
+ HT_OPER_OP_MODE_NON_GF_HT_STAS_PRESENT) &&
iface->num_sta_ht_no_gf == 0) {
- iface->ht_op_mode &=
- ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
+ iface->ht_op_mode &= ~HT_OPER_OP_MODE_NON_GF_HT_STAS_PRESENT;
op_mode_changes++;
}
- if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
+ if (!(iface->ht_op_mode & HT_OPER_OP_MODE_OBSS_NON_HT_STAS_PRESENT) &&
(iface->num_sta_no_ht || iface->olbc_ht)) {
- iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
+ iface->ht_op_mode |= HT_OPER_OP_MODE_OBSS_NON_HT_STAS_PRESENT;
op_mode_changes++;
} else if ((iface->ht_op_mode &
- HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
+ HT_OPER_OP_MODE_OBSS_NON_HT_STAS_PRESENT) &&
(iface->num_sta_no_ht == 0 && !iface->olbc_ht)) {
- iface->ht_op_mode &=
- ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
+ iface->ht_op_mode &= ~HT_OPER_OP_MODE_OBSS_NON_HT_STAS_PRESENT;
op_mode_changes++;
}
- /* Note: currently we switch to the MIXED op mode if HT non-greenfield
- * station is associated. Probably it's a theoretical case, since
- * it looks like all known HT STAs support greenfield.
- */
- new_op_mode = 0;
- if (iface->num_sta_no_ht ||
- (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT))
- new_op_mode = OP_MODE_MIXED;
- else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
- && iface->num_sta_ht_20mhz)
- new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED;
+ if (iface->num_sta_no_ht)
+ new_op_mode = HT_PROT_NON_HT_MIXED;
+ else if (iface->conf->secondary_channel && iface->num_sta_ht_20mhz)
+ new_op_mode = HT_PROT_20MHZ_PROTECTION;
else if (iface->olbc_ht)
- new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS;
+ new_op_mode = HT_PROT_NONMEMBER_PROTECTION;
else
- new_op_mode = OP_MODE_PURE;
+ new_op_mode = HT_PROT_NO_PROTECTION;
- cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK;
+ cur_op_mode = iface->ht_op_mode & HT_OPER_OP_MODE_HT_PROT_MASK;
if (cur_op_mode != new_op_mode) {
- iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK;
+ iface->ht_op_mode &= ~HT_OPER_OP_MODE_HT_PROT_MASK;
iface->ht_op_mode |= new_op_mode;
op_mode_changes++;
}
}
-u16 copy_sta_ht_capab(struct sta_info *sta, const u8 *ht_capab,
- size_t ht_capab_len)
+static int is_40_allowed(struct hostapd_iface *iface, int channel)
{
+ int pri_freq, sec_freq;
+ int affected_start, affected_end;
+ int pri = 2407 + 5 * channel;
+
+ if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
+ return 1;
+
+ pri_freq = hostapd_hw_get_freq(iface->bss[0], iface->conf->channel);
+
+ if (iface->conf->secondary_channel > 0)
+ sec_freq = pri_freq + 20;
+ else
+ sec_freq = pri_freq - 20;
+
+ affected_start = (pri_freq + sec_freq) / 2 - 25;
+ affected_end = (pri_freq + sec_freq) / 2 + 25;
+ if ((pri < affected_start || pri > affected_end))
+ return 1; /* not within affected channel range */
+
+ wpa_printf(MSG_ERROR, "40 MHz affected channel range: [%d,%d] MHz",
+ affected_start, affected_end);
+ wpa_printf(MSG_ERROR, "Neighboring BSS: freq=%d", pri);
+ return 0;
+}
+
+
+void hostapd_2040_coex_action(struct hostapd_data *hapd,
+ const struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct hostapd_iface *iface = hapd->iface;
+ struct ieee80211_2040_bss_coex_ie *bc_ie;
+ struct ieee80211_2040_intol_chan_report *ic_report;
+ int is_ht40_allowed = 1;
+ int i;
+ const u8 *start = (const u8 *) mgmt;
+ const u8 *data = start + IEEE80211_HDRLEN + 2;
+
+ hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_DEBUG, "hostapd_public_action - action=%d",
+ mgmt->u.action.u.public_action.action);
+
+ if (!(iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+ return;
+
+ if (len < IEEE80211_HDRLEN + 2 + sizeof(*bc_ie))
+ return;
+
+ bc_ie = (struct ieee80211_2040_bss_coex_ie *) data;
+ if (bc_ie->element_id != WLAN_EID_20_40_BSS_COEXISTENCE ||
+ bc_ie->length < 1) {
+ wpa_printf(MSG_DEBUG, "Unexpected IE (%u,%u) in coex report",
+ bc_ie->element_id, bc_ie->length);
+ return;
+ }
+ if (len < IEEE80211_HDRLEN + 2 + 2 + bc_ie->length)
+ return;
+ data += 2 + bc_ie->length;
+
+ wpa_printf(MSG_DEBUG, "20/40 BSS Coexistence Information field: 0x%x",
+ bc_ie->coex_param);
+ if (bc_ie->coex_param & WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ) {
+ hostapd_logger(hapd, mgmt->sa,
+ HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_DEBUG,
+ "20 MHz BSS width request bit is set in BSS coexistence information field");
+ is_ht40_allowed = 0;
+ }
+
+ if (bc_ie->coex_param & WLAN_20_40_BSS_COEX_40MHZ_INTOL) {
+ hostapd_logger(hapd, mgmt->sa,
+ HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_DEBUG,
+ "40 MHz intolerant bit is set in BSS coexistence information field");
+ is_ht40_allowed = 0;
+ }
+
+ if (start + len - data >= 3 &&
+ data[0] == WLAN_EID_20_40_BSS_INTOLERANT && data[1] >= 1) {
+ u8 ielen = data[1];
+
+ if (ielen > start + len - data - 2)
+ return;
+ ic_report = (struct ieee80211_2040_intol_chan_report *) data;
+ wpa_printf(MSG_DEBUG,
+ "20/40 BSS Intolerant Channel Report: Operating Class %u",
+ ic_report->op_class);
+
+ /* Go through the channel report to find any BSS there in the
+ * affected channel range */
+ for (i = 0; i < ielen - 1; i++) {
+ u8 chan = ic_report->variable[i];
+
+ if (is_40_allowed(iface, chan))
+ continue;
+ hostapd_logger(hapd, mgmt->sa,
+ HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_DEBUG,
+ "20_40_INTOLERANT channel %d reported",
+ chan);
+ is_ht40_allowed = 0;
+ }
+ }
+ wpa_printf(MSG_DEBUG, "is_ht40_allowed=%d num_sta_ht40_intolerant=%d",
+ is_ht40_allowed, iface->num_sta_ht40_intolerant);
+
+ if (!is_ht40_allowed &&
+ (iface->drv_flags & WPA_DRIVER_FLAGS_HT_2040_COEX)) {
+ if (iface->conf->secondary_channel) {
+ hostapd_logger(hapd, mgmt->sa,
+ HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_INFO,
+ "Switching to 20 MHz operation");
+ iface->conf->secondary_channel = 0;
+ ieee802_11_set_beacons(iface);
+ }
+ if (!iface->num_sta_ht40_intolerant &&
+ iface->conf->obss_interval) {
+ unsigned int delay_time;
+ delay_time = OVERLAPPING_BSS_TRANS_DELAY_FACTOR *
+ iface->conf->obss_interval;
+ eloop_cancel_timeout(ap_ht2040_timeout, hapd->iface,
+ NULL);
+ eloop_register_timeout(delay_time, 0, ap_ht2040_timeout,
+ hapd->iface, NULL);
+ wpa_printf(MSG_DEBUG,
+ "Reschedule HT 20/40 timeout to occur in %u seconds",
+ delay_time);
+ }
+ }
+}
+
+
+u16 copy_sta_ht_capab(struct hostapd_data *hapd, struct sta_info *sta,
+ const u8 *ht_capab)
+{
+ /*
+ * Disable HT caps for STAs associated to no-HT BSSes, or for stations
+ * that did not specify a valid WMM IE in the (Re)Association Request
+ * frame.
+ */
if (!ht_capab ||
- ht_capab_len < sizeof(struct ieee80211_ht_capabilities)) {
+ !(sta->flags & WLAN_STA_WMM) || hapd->conf->disable_11n) {
sta->flags &= ~WLAN_STA_HT;
os_free(sta->ht_capabilities);
sta->ht_capabilities = NULL;
}
+void ht40_intolerant_add(struct hostapd_iface *iface, struct sta_info *sta)
+{
+ if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
+ return;
+
+ wpa_printf(MSG_INFO, "HT: Forty MHz Intolerant is set by STA " MACSTR
+ " in Association Request", MAC2STR(sta->addr));
+
+ if (sta->ht40_intolerant_set)
+ return;
+
+ sta->ht40_intolerant_set = 1;
+ iface->num_sta_ht40_intolerant++;
+ eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
+
+ if (iface->conf->secondary_channel &&
+ (iface->drv_flags & WPA_DRIVER_FLAGS_HT_2040_COEX)) {
+ iface->conf->secondary_channel = 0;
+ ieee802_11_set_beacons(iface);
+ }
+}
+
+
+void ht40_intolerant_remove(struct hostapd_iface *iface, struct sta_info *sta)
+{
+ if (!sta->ht40_intolerant_set)
+ return;
+
+ sta->ht40_intolerant_set = 0;
+ iface->num_sta_ht40_intolerant--;
+
+ if (iface->num_sta_ht40_intolerant == 0 &&
+ (iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) &&
+ (iface->drv_flags & WPA_DRIVER_FLAGS_HT_2040_COEX)) {
+ unsigned int delay_time = OVERLAPPING_BSS_TRANS_DELAY_FACTOR *
+ iface->conf->obss_interval;
+ wpa_printf(MSG_DEBUG,
+ "HT: Start 20->40 MHz transition timer (%d seconds)",
+ delay_time);
+ eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
+ eloop_register_timeout(delay_time, 0, ap_ht2040_timeout,
+ iface, NULL);
+ }
+}
+
+
static void update_sta_ht(struct hostapd_data *hapd, struct sta_info *sta)
{
u16 ht_capab;
__func__, MAC2STR(sta->addr),
hapd->iface->num_sta_ht_20mhz);
}
+
+ if (ht_capab & HT_CAP_INFO_40MHZ_INTOLERANT)
+ ht40_intolerant_add(hapd->iface, sta);
}
return;
os_memcpy(neg_ht_cap, ht_cap, sizeof(*neg_ht_cap));
cap = le_to_host16(neg_ht_cap->ht_capabilities_info);
- cap &= hapd->iconf->ht_capab;
- cap |= (hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED);
+
+ /*
+ * Mask out HT features we don't support, but don't overwrite
+ * non-symmetric features like STBC and SMPS. Just because
+ * we're not in dynamic SMPS mode the STA might still be.
+ */
+ cap &= (hapd->iconf->ht_capab | HT_CAP_INFO_RX_STBC_MASK |
+ HT_CAP_INFO_TX_STBC | HT_CAP_INFO_SMPS_MASK);
/*
* STBC needs to be handled specially
neg_ht_cap->ht_capabilities_info = host_to_le16(cap);
}
+
+
+void ap_ht2040_timeout(void *eloop_data, void *user_data)
+{
+ struct hostapd_iface *iface = eloop_data;
+
+ wpa_printf(MSG_INFO, "Switching to 40 MHz operation");
+
+ iface->conf->secondary_channel = iface->secondary_ch;
+ ieee802_11_set_beacons(iface);
+}
projects / mech_eap.git / blobdiff