+++ /dev/null
-/*
- * hostapd / Hardware feature query and different modes
- * Copyright 2002-2003, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright (c) 2008-2009, Jouni Malinen <j@w1.fi>
- *
- * 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.
- */
-
-#include "utils/includes.h"
-
-#include "utils/common.h"
-#include "utils/eloop.h"
-#include "common/ieee802_11_defs.h"
-#include "common/ieee802_11_common.h"
-#include "drivers/driver.h"
-#include "hostapd.h"
-#include "ap_config.h"
-#include "ap_drv_ops.h"
-#include "hw_features.h"
-
-
-void hostapd_free_hw_features(struct hostapd_hw_modes *hw_features,
- size_t num_hw_features)
-{
- size_t i;
-
- if (hw_features == NULL)
- return;
-
- for (i = 0; i < num_hw_features; i++) {
- os_free(hw_features[i].channels);
- os_free(hw_features[i].rates);
- }
-
- os_free(hw_features);
-}
-
-
-int hostapd_get_hw_features(struct hostapd_iface *iface)
-{
- struct hostapd_data *hapd = iface->bss[0];
- int ret = 0, i, j;
- u16 num_modes, flags;
- struct hostapd_hw_modes *modes;
-
- if (hostapd_drv_none(hapd))
- return -1;
- modes = hostapd_get_hw_feature_data(hapd, &num_modes, &flags);
- if (modes == NULL) {
- hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "Fetching hardware channel/rate support not "
- "supported.");
- return -1;
- }
-
- iface->hw_flags = flags;
-
- hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
- iface->hw_features = modes;
- iface->num_hw_features = num_modes;
-
- for (i = 0; i < num_modes; i++) {
- struct hostapd_hw_modes *feature = &modes[i];
- /* set flag for channels we can use in current regulatory
- * domain */
- for (j = 0; j < feature->num_channels; j++) {
- /*
- * Disable all channels that are marked not to allow
- * IBSS operation or active scanning. In addition,
- * disable all channels that require radar detection,
- * since that (in addition to full DFS) is not yet
- * supported.
- */
- if (feature->channels[j].flag &
- (HOSTAPD_CHAN_NO_IBSS |
- HOSTAPD_CHAN_PASSIVE_SCAN |
- HOSTAPD_CHAN_RADAR))
- feature->channels[j].flag |=
- HOSTAPD_CHAN_DISABLED;
- if (feature->channels[j].flag & HOSTAPD_CHAN_DISABLED)
- continue;
- wpa_printf(MSG_MSGDUMP, "Allowed channel: mode=%d "
- "chan=%d freq=%d MHz max_tx_power=%d dBm",
- feature->mode,
- feature->channels[j].chan,
- feature->channels[j].freq,
- feature->channels[j].max_tx_power);
- }
- }
-
- return ret;
-}
-
-
-static int hostapd_prepare_rates(struct hostapd_data *hapd,
- struct hostapd_hw_modes *mode)
-{
- int i, num_basic_rates = 0;
- int basic_rates_a[] = { 60, 120, 240, -1 };
- int basic_rates_b[] = { 10, 20, -1 };
- int basic_rates_g[] = { 10, 20, 55, 110, -1 };
- int *basic_rates;
-
- if (hapd->iconf->basic_rates)
- basic_rates = hapd->iconf->basic_rates;
- else switch (mode->mode) {
- case HOSTAPD_MODE_IEEE80211A:
- basic_rates = basic_rates_a;
- break;
- case HOSTAPD_MODE_IEEE80211B:
- basic_rates = basic_rates_b;
- break;
- case HOSTAPD_MODE_IEEE80211G:
- basic_rates = basic_rates_g;
- break;
- default:
- return -1;
- }
-
- if (hostapd_set_rate_sets(hapd, hapd->iconf->supported_rates,
- basic_rates, mode->mode)) {
- wpa_printf(MSG_ERROR, "Failed to update rate sets in kernel "
- "module");
- }
-
- os_free(hapd->iface->current_rates);
- hapd->iface->num_rates = 0;
-
- hapd->iface->current_rates =
- os_zalloc(mode->num_rates * sizeof(struct hostapd_rate_data));
- if (!hapd->iface->current_rates) {
- wpa_printf(MSG_ERROR, "Failed to allocate memory for rate "
- "table.");
- return -1;
- }
-
- for (i = 0; i < mode->num_rates; i++) {
- struct hostapd_rate_data *rate;
-
- if (hapd->iconf->supported_rates &&
- !hostapd_rate_found(hapd->iconf->supported_rates,
- mode->rates[i]))
- continue;
-
- rate = &hapd->iface->current_rates[hapd->iface->num_rates];
- rate->rate = mode->rates[i];
- if (hostapd_rate_found(basic_rates, rate->rate)) {
- rate->flags |= HOSTAPD_RATE_BASIC;
- num_basic_rates++;
- }
- wpa_printf(MSG_DEBUG, "RATE[%d] rate=%d flags=0x%x",
- hapd->iface->num_rates, rate->rate, rate->flags);
- hapd->iface->num_rates++;
- }
-
- if (hapd->iface->num_rates == 0 || num_basic_rates == 0) {
- wpa_printf(MSG_ERROR, "No rates remaining in supported/basic "
- "rate sets (%d,%d).",
- hapd->iface->num_rates, num_basic_rates);
- return -1;
- }
-
- return 0;
-}
-
-
-#ifdef CONFIG_IEEE80211N
-static int ieee80211n_allowed_ht40_channel_pair(struct hostapd_iface *iface)
-{
- int sec_chan, ok, j, first;
- int allowed[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157,
- 184, 192 };
- size_t k;
-
- if (!iface->conf->secondary_channel)
- return 1; /* HT40 not used */
-
- sec_chan = iface->conf->channel + iface->conf->secondary_channel * 4;
- wpa_printf(MSG_DEBUG, "HT40: control channel: %d "
- "secondary channel: %d",
- iface->conf->channel, sec_chan);
-
- /* Verify that HT40 secondary channel is an allowed 20 MHz
- * channel */
- ok = 0;
- for (j = 0; j < iface->current_mode->num_channels; j++) {
- struct hostapd_channel_data *chan =
- &iface->current_mode->channels[j];
- if (!(chan->flag & HOSTAPD_CHAN_DISABLED) &&
- chan->chan == sec_chan) {
- ok = 1;
- break;
- }
- }
- if (!ok) {
- wpa_printf(MSG_ERROR, "HT40 secondary channel %d not allowed",
- sec_chan);
- return 0;
- }
-
- /*
- * Verify that HT40 primary,secondary channel pair is allowed per
- * IEEE 802.11n Annex J. This is only needed for 5 GHz band since
- * 2.4 GHz rules allow all cases where the secondary channel fits into
- * the list of allowed channels (already checked above).
- */
- if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)
- return 1;
-
- if (iface->conf->secondary_channel > 0)
- first = iface->conf->channel;
- else
- first = sec_chan;
-
- ok = 0;
- for (k = 0; k < sizeof(allowed) / sizeof(allowed[0]); k++) {
- if (first == allowed[k]) {
- ok = 1;
- break;
- }
- }
- if (!ok) {
- wpa_printf(MSG_ERROR, "HT40 channel pair (%d, %d) not allowed",
- iface->conf->channel,
- iface->conf->secondary_channel);
- return 0;
- }
-
- return 1;
-}
-
-
-static void ieee80211n_switch_pri_sec(struct hostapd_iface *iface)
-{
- if (iface->conf->secondary_channel > 0) {
- iface->conf->channel += 4;
- iface->conf->secondary_channel = -1;
- } else {
- iface->conf->channel -= 4;
- iface->conf->secondary_channel = 1;
- }
-}
-
-
-static void ieee80211n_get_pri_sec_chan(struct wpa_scan_res *bss,
- int *pri_chan, int *sec_chan)
-{
- struct ieee80211_ht_operation *oper;
- struct ieee802_11_elems elems;
-
- *pri_chan = *sec_chan = 0;
-
- ieee802_11_parse_elems((u8 *) (bss + 1), bss->ie_len, &elems, 0);
- if (elems.ht_operation &&
- elems.ht_operation_len >= sizeof(*oper)) {
- oper = (struct ieee80211_ht_operation *) elems.ht_operation;
- *pri_chan = oper->control_chan;
- if (oper->ht_param & HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH) {
- int sec = oper->ht_param &
- HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
- if (sec == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
- *sec_chan = *pri_chan + 4;
- else if (sec == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
- *sec_chan = *pri_chan - 4;
- }
- }
-}
-
-
-static int ieee80211n_check_40mhz_5g(struct hostapd_iface *iface,
- struct wpa_scan_results *scan_res)
-{
- int pri_chan, sec_chan, pri_freq, sec_freq, pri_bss, sec_bss;
- int bss_pri_chan, bss_sec_chan;
- size_t i;
- int match;
-
- pri_chan = iface->conf->channel;
- sec_chan = iface->conf->secondary_channel * 4;
- pri_freq = hostapd_hw_get_freq(iface->bss[0], pri_chan);
- if (iface->conf->secondary_channel > 0)
- sec_freq = pri_freq + 20;
- else
- sec_freq = pri_freq - 20;
-
- /*
- * Switch PRI/SEC channels if Beacons were detected on selected SEC
- * channel, but not on selected PRI channel.
- */
- pri_bss = sec_bss = 0;
- for (i = 0; i < scan_res->num; i++) {
- struct wpa_scan_res *bss = scan_res->res[i];
- if (bss->freq == pri_freq)
- pri_bss++;
- else if (bss->freq == sec_freq)
- sec_bss++;
- }
- if (sec_bss && !pri_bss) {
- wpa_printf(MSG_INFO, "Switch own primary and secondary "
- "channel to get secondary channel with no Beacons "
- "from other BSSes");
- ieee80211n_switch_pri_sec(iface);
- }
-
- /*
- * Match PRI/SEC channel with any existing HT40 BSS on the same
- * channels that we are about to use (if already mixed order in
- * existing BSSes, use own preference).
- */
- match = 0;
- for (i = 0; i < scan_res->num; i++) {
- struct wpa_scan_res *bss = scan_res->res[i];
- ieee80211n_get_pri_sec_chan(bss, &bss_pri_chan, &bss_sec_chan);
- if (pri_chan == bss_pri_chan &&
- sec_chan == bss_sec_chan) {
- match = 1;
- break;
- }
- }
- if (!match) {
- for (i = 0; i < scan_res->num; i++) {
- struct wpa_scan_res *bss = scan_res->res[i];
- ieee80211n_get_pri_sec_chan(bss, &bss_pri_chan,
- &bss_sec_chan);
- if (pri_chan == bss_sec_chan &&
- sec_chan == bss_pri_chan) {
- wpa_printf(MSG_INFO, "Switch own primary and "
- "secondary channel due to BSS "
- "overlap with " MACSTR,
- MAC2STR(bss->bssid));
- ieee80211n_switch_pri_sec(iface);
- break;
- }
- }
- }
-
- return 1;
-}
-
-
-static int ieee80211n_check_40mhz_2g4(struct hostapd_iface *iface,
- struct wpa_scan_results *scan_res)
-{
- int pri_freq, sec_freq;
- int affected_start, affected_end;
- size_t i;
-
- 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;
- wpa_printf(MSG_DEBUG, "40 MHz affected channel range: [%d,%d] MHz",
- affected_start, affected_end);
- for (i = 0; i < scan_res->num; i++) {
- struct wpa_scan_res *bss = scan_res->res[i];
- int pri = bss->freq;
- int sec = pri;
- int sec_chan, pri_chan;
-
- ieee80211n_get_pri_sec_chan(bss, &pri_chan, &sec_chan);
-
- if (sec_chan) {
- if (sec_chan < pri_chan)
- sec = pri - 20;
- else
- sec = pri + 20;
- }
-
- if ((pri < affected_start || pri > affected_end) &&
- (sec < affected_start || sec > affected_end))
- continue; /* not within affected channel range */
-
- wpa_printf(MSG_DEBUG, "Neighboring BSS: " MACSTR
- " freq=%d pri=%d sec=%d",
- MAC2STR(bss->bssid), bss->freq, pri_chan, sec_chan);
-
- if (sec_chan) {
- if (pri_freq != pri || sec_freq != sec) {
- wpa_printf(MSG_DEBUG, "40 MHz pri/sec "
- "mismatch with BSS " MACSTR
- " <%d,%d> (chan=%d%c) vs. <%d,%d>",
- MAC2STR(bss->bssid),
- pri, sec, pri_chan,
- sec > pri ? '+' : '-',
- pri_freq, sec_freq);
- return 0;
- }
- }
-
- /* TODO: 40 MHz intolerant */
- }
-
- return 1;
-}
-
-
-static void wpa_scan_results_free(struct wpa_scan_results *res)
-{
- size_t i;
-
- if (res == NULL)
- return;
-
- for (i = 0; i < res->num; i++)
- os_free(res->res[i]);
- os_free(res->res);
- os_free(res);
-}
-
-
-static void ieee80211n_check_scan(struct hostapd_iface *iface)
-{
- struct wpa_scan_results *scan_res;
- int oper40;
-
- /* Check list of neighboring BSSes (from scan) to see whether 40 MHz is
- * allowed per IEEE 802.11n/D7.0, 11.14.3.2 */
-
- iface->scan_cb = NULL;
-
- scan_res = hostapd_driver_get_scan_results(iface->bss[0]);
- if (scan_res == NULL) {
- hostapd_setup_interface_complete(iface, 1);
- return;
- }
-
- if (iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A)
- oper40 = ieee80211n_check_40mhz_5g(iface, scan_res);
- else
- oper40 = ieee80211n_check_40mhz_2g4(iface, scan_res);
- wpa_scan_results_free(scan_res);
-
- if (!oper40) {
- wpa_printf(MSG_INFO, "20/40 MHz operation not permitted on "
- "channel pri=%d sec=%d based on overlapping BSSes",
- iface->conf->channel,
- iface->conf->channel +
- iface->conf->secondary_channel * 4);
- iface->conf->secondary_channel = 0;
- iface->conf->ht_capab &= ~HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
- }
-
- hostapd_setup_interface_complete(iface, 0);
-}
-
-
-static int ieee80211n_check_40mhz(struct hostapd_iface *iface)
-{
- struct wpa_driver_scan_params params;
-
- if (!iface->conf->secondary_channel)
- return 0; /* HT40 not used */
-
- wpa_printf(MSG_DEBUG, "Scan for neighboring BSSes prior to enabling "
- "40 MHz channel");
- os_memset(¶ms, 0, sizeof(params));
- /* TODO: scan only the needed frequency */
- if (hostapd_driver_scan(iface->bss[0], ¶ms) < 0) {
- wpa_printf(MSG_ERROR, "Failed to request a scan of "
- "neighboring BSSes");
- return -1;
- }
-
- iface->scan_cb = ieee80211n_check_scan;
- return 1;
-}
-
-
-static int ieee80211n_supported_ht_capab(struct hostapd_iface *iface)
-{
- u16 hw = iface->current_mode->ht_capab;
- u16 conf = iface->conf->ht_capab;
-
- if (!iface->conf->ieee80211n)
- return 1;
-
- if ((conf & HT_CAP_INFO_LDPC_CODING_CAP) &&
- !(hw & HT_CAP_INFO_LDPC_CODING_CAP)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [LDPC]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) &&
- !(hw & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [HT40*]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_SMPS_MASK) != (hw & HT_CAP_INFO_SMPS_MASK) &&
- (conf & HT_CAP_INFO_SMPS_MASK) != HT_CAP_INFO_SMPS_DISABLED) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [SMPS-*]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_GREEN_FIELD) &&
- !(hw & HT_CAP_INFO_GREEN_FIELD)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [GF]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_SHORT_GI20MHZ) &&
- !(hw & HT_CAP_INFO_SHORT_GI20MHZ)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [SHORT-GI-20]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_SHORT_GI40MHZ) &&
- !(hw & HT_CAP_INFO_SHORT_GI40MHZ)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [SHORT-GI-40]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_TX_STBC) && !(hw & HT_CAP_INFO_TX_STBC)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [TX-STBC]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_RX_STBC_MASK) >
- (hw & HT_CAP_INFO_RX_STBC_MASK)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [RX-STBC*]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_DELAYED_BA) &&
- !(hw & HT_CAP_INFO_DELAYED_BA)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [DELAYED-BA]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_MAX_AMSDU_SIZE) &&
- !(hw & HT_CAP_INFO_MAX_AMSDU_SIZE)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [MAX-AMSDU-7935]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_DSSS_CCK40MHZ) &&
- !(hw & HT_CAP_INFO_DSSS_CCK40MHZ)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [DSSS_CCK-40]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_PSMP_SUPP) && !(hw & HT_CAP_INFO_PSMP_SUPP)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [PSMP]");
- return 0;
- }
-
- if ((conf & HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT) &&
- !(hw & HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT)) {
- wpa_printf(MSG_ERROR, "Driver does not support configured "
- "HT capability [LSIG-TXOP-PROT]");
- return 0;
- }
-
- return 1;
-}
-
-#endif /* CONFIG_IEEE80211N */
-
-
-int hostapd_check_ht_capab(struct hostapd_iface *iface)
-{
-#ifdef CONFIG_IEEE80211N
- int ret;
- ret = ieee80211n_check_40mhz(iface);
- if (ret)
- return ret;
- if (!ieee80211n_allowed_ht40_channel_pair(iface))
- return -1;
- if (!ieee80211n_supported_ht_capab(iface))
- return -1;
-#endif /* CONFIG_IEEE80211N */
-
- return 0;
-}
-
-
-/**
- * hostapd_select_hw_mode - Select the hardware mode
- * @iface: Pointer to interface data.
- * Returns: 0 on success, -1 on failure
- *
- * Sets up the hardware mode, channel, rates, and passive scanning
- * based on the configuration.
- */
-int hostapd_select_hw_mode(struct hostapd_iface *iface)
-{
- int i, j, ok;
-
- if (iface->num_hw_features < 1)
- return -1;
-
- iface->current_mode = NULL;
- for (i = 0; i < iface->num_hw_features; i++) {
- struct hostapd_hw_modes *mode = &iface->hw_features[i];
- if (mode->mode == iface->conf->hw_mode) {
- iface->current_mode = mode;
- break;
- }
- }
-
- if (iface->current_mode == NULL) {
- wpa_printf(MSG_ERROR, "Hardware does not support configured "
- "mode");
- hostapd_logger(iface->bss[0], NULL, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_WARNING,
- "Hardware does not support configured mode "
- "(%d)", (int) iface->conf->hw_mode);
- return -1;
- }
-
- ok = 0;
- for (j = 0; j < iface->current_mode->num_channels; j++) {
- struct hostapd_channel_data *chan =
- &iface->current_mode->channels[j];
- if (!(chan->flag & HOSTAPD_CHAN_DISABLED) &&
- (chan->chan == iface->conf->channel)) {
- ok = 1;
- break;
- }
- }
- if (iface->conf->channel == 0) {
- /* TODO: could request a scan of neighboring BSSes and select
- * the channel automatically */
- wpa_printf(MSG_ERROR, "Channel not configured "
- "(hw_mode/channel in hostapd.conf)");
- return -1;
- }
- if (ok == 0 && iface->conf->channel != 0) {
- hostapd_logger(iface->bss[0], NULL,
- HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_WARNING,
- "Configured channel (%d) not found from the "
- "channel list of current mode (%d) %s",
- iface->conf->channel,
- iface->current_mode->mode,
- hostapd_hw_mode_txt(iface->current_mode->mode));
- iface->current_mode = NULL;
- }
-
- if (iface->current_mode == NULL) {
- hostapd_logger(iface->bss[0], NULL, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_WARNING,
- "Hardware does not support configured channel");
- return -1;
- }
-
- if (hostapd_prepare_rates(iface->bss[0], iface->current_mode)) {
- wpa_printf(MSG_ERROR, "Failed to prepare rates table.");
- hostapd_logger(iface->bss[0], NULL, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_WARNING,
- "Failed to prepare rates table.");
- return -1;
- }
-
- return 0;
-}
-
-
-const char * hostapd_hw_mode_txt(int mode)
-{
- switch (mode) {
- case HOSTAPD_MODE_IEEE80211A:
- return "IEEE 802.11a";
- case HOSTAPD_MODE_IEEE80211B:
- return "IEEE 802.11b";
- case HOSTAPD_MODE_IEEE80211G:
- return "IEEE 802.11g";
- default:
- return "UNKNOWN";
- }
-}
-
-
-int hostapd_hw_get_freq(struct hostapd_data *hapd, int chan)
-{
- int i;
-
- if (!hapd->iface->current_mode)
- return 0;
-
- for (i = 0; i < hapd->iface->current_mode->num_channels; i++) {
- struct hostapd_channel_data *ch =
- &hapd->iface->current_mode->channels[i];
- if (ch->chan == chan)
- return ch->freq;
- }
-
- return 0;
-}
-
-
-int hostapd_hw_get_channel(struct hostapd_data *hapd, int freq)
-{
- int i;
-
- if (!hapd->iface->current_mode)
- return 0;
-
- for (i = 0; i < hapd->iface->current_mode->num_channels; i++) {
- struct hostapd_channel_data *ch =
- &hapd->iface->current_mode->channels[i];
- if (ch->freq == freq)
- return ch->chan;
- }
-
- return 0;
-}
projects / mech_eap.git / blobdiff