コード例 #1
0
ファイル: acs.c プロジェクト: Bananian/hostapd-rtl
static void acs_scan_complete(struct hostapd_iface *iface)
{
	int err;

	iface->scan_cb = NULL;

	wpa_printf(MSG_DEBUG, "ACS: Using survey based algorithm (acs_num_scans=%d)",
		   iface->conf->acs_num_scans);

	err = hostapd_drv_get_survey(iface->bss[0], 0);
	if (err) {
		wpa_printf(MSG_ERROR, "ACS: Failed to get survey data");
		goto fail;
	}

	if (++iface->acs_num_completed_scans < iface->conf->acs_num_scans) {
		err = acs_request_scan(iface);
		if (err) {
			wpa_printf(MSG_ERROR, "ACS: Failed to request scan");
			goto fail;
		}

		return;
	}

	acs_study(iface);
	return;
fail:
	hostapd_acs_completed(iface, 1);
	acs_fail(iface);
}
コード例 #2
0
ファイル: acs.c プロジェクト: Bananian/hostapd-rtl
static void acs_study(struct hostapd_iface *iface)
{
	struct hostapd_channel_data *ideal_chan;
	int err;

	err = acs_study_options(iface);
	if (err < 0) {
		wpa_printf(MSG_ERROR, "ACS: All study options have failed");
		goto fail;
	}

	ideal_chan = acs_find_ideal_chan(iface);
	if (!ideal_chan) {
		wpa_printf(MSG_ERROR, "ACS: Failed to compute ideal channel");
		err = -1;
		goto fail;
	}

	iface->conf->channel = ideal_chan->chan;

	if (iface->conf->ieee80211ac)
		acs_adjust_vht_center_freq(iface);

	err = 0;
fail:
	/*
	 * hostapd_setup_interface_complete() will return -1 on failure,
	 * 0 on success and 0 is HOSTAPD_CHAN_VALID :)
	 */
	if (hostapd_acs_completed(iface, err) == HOSTAPD_CHAN_VALID) {
		acs_cleanup(iface);
		return;
	}

	/* This can possibly happen if channel parameters (secondary
	 * channel, center frequencies) are misconfigured */
	wpa_printf(MSG_ERROR, "ACS: Possibly channel configuration is invalid, please report this along with your config file.");
	acs_fail(iface);
}
コード例 #3
0
void hostapd_acs_channel_selected(struct hostapd_data *hapd,
				  struct acs_selected_channels *acs_res)
{
	int ret, i;
	int err = 0;

	if (hapd->iconf->channel) {
		wpa_printf(MSG_INFO, "ACS: Channel was already set to %d",
			   hapd->iconf->channel);
		return;
	}

	if (!hapd->iface->current_mode) {
		for (i = 0; i < hapd->iface->num_hw_features; i++) {
			struct hostapd_hw_modes *mode =
				&hapd->iface->hw_features[i];

			if (mode->mode == acs_res->hw_mode) {
				hapd->iface->current_mode = mode;
				break;
			}
		}
		if (!hapd->iface->current_mode) {
			hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
				       HOSTAPD_LEVEL_WARNING,
				       "driver selected to bad hw_mode");
			err = 1;
			goto out;
		}
	}

	hapd->iface->freq = hostapd_hw_get_freq(hapd, acs_res->pri_channel);

	if (!acs_res->pri_channel) {
		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_WARNING,
			       "driver switched to bad channel");
		err = 1;
		goto out;
	}

	hapd->iconf->channel = acs_res->pri_channel;
	hapd->iconf->acs = 1;

	if (acs_res->sec_channel == 0)
		hapd->iconf->secondary_channel = 0;
	else if (acs_res->sec_channel < acs_res->pri_channel)
		hapd->iconf->secondary_channel = -1;
	else if (acs_res->sec_channel > acs_res->pri_channel)
		hapd->iconf->secondary_channel = 1;
	else {
		wpa_printf(MSG_ERROR, "Invalid secondary channel!");
		err = 1;
		goto out;
	}

	if (hapd->iface->conf->ieee80211ac) {
		/* set defaults for backwards compatibility */
		hapd->iconf->vht_oper_centr_freq_seg1_idx = 0;
		hapd->iconf->vht_oper_centr_freq_seg0_idx = 0;
		hapd->iconf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
		if (acs_res->ch_width == 80) {
			hapd->iconf->vht_oper_centr_freq_seg0_idx =
				acs_res->vht_seg0_center_ch;
			hapd->iconf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
		} else if (acs_res->ch_width == 160) {
			if (acs_res->vht_seg1_center_ch == 0) {
				hapd->iconf->vht_oper_centr_freq_seg0_idx =
					acs_res->vht_seg0_center_ch;
				hapd->iconf->vht_oper_chwidth =
					VHT_CHANWIDTH_160MHZ;
			} else {
				hapd->iconf->vht_oper_centr_freq_seg0_idx =
					acs_res->vht_seg0_center_ch;
				hapd->iconf->vht_oper_centr_freq_seg1_idx =
					acs_res->vht_seg1_center_ch;
				hapd->iconf->vht_oper_chwidth =
					VHT_CHANWIDTH_80P80MHZ;
			}
		}
	}

out:
	ret = hostapd_acs_completed(hapd->iface, err);
	if (ret) {
		wpa_printf(MSG_ERROR,
			   "ACS: Possibly channel configuration is invalid");
	}
}