Esempi in C++ (Cpp) per hostapd_switch_channel

Esempio n. 1

File: ap.c Progetto: cococorp/hostap-upstream

int ap_switch_channel(struct wpa_supplicant *wpa_s,
		      struct csa_settings *settings)
{
#ifdef NEED_AP_MLME
	if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0])
		return -1;

	return hostapd_switch_channel(wpa_s->ap_iface->bss[0], settings);
#else /* NEED_AP_MLME */
	return -1;
#endif /* NEED_AP_MLME */
}

Esempio n. 2

static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface)
{
	struct hostapd_channel_data *channel;
	int secondary_channel;
	u8 vht_oper_centr_freq_seg0_idx;
	u8 vht_oper_centr_freq_seg1_idx;
	int skip_radar = 1;
	struct csa_settings csa_settings;
	unsigned int i;
	int err = 1;

	wpa_printf(MSG_DEBUG, "%s called (CAC active: %s, CSA active: %s)",
		   __func__, iface->cac_started ? "yes" : "no",
		   hostapd_csa_in_progress(iface) ? "yes" : "no");

	/* Check if CSA in progress */
	if (hostapd_csa_in_progress(iface))
		return 0;

	/* Check if active CAC */
	if (iface->cac_started)
		return hostapd_dfs_start_channel_switch_cac(iface);

	/* Perform channel switch/CSA */
	channel = dfs_get_valid_channel(iface, &secondary_channel,
					&vht_oper_centr_freq_seg0_idx,
					&vht_oper_centr_freq_seg1_idx,
					skip_radar);

	if (!channel) {
		/*
		 * If there is no channel to switch immediately to, check if
		 * there is another channel where we can switch even if it
		 * requires to perform a CAC first.
		 */
		skip_radar = 0;
		channel = dfs_get_valid_channel(iface, &secondary_channel,
						&vht_oper_centr_freq_seg0_idx,
						&vht_oper_centr_freq_seg1_idx,
						skip_radar);
		if (!channel) {
			wpa_printf(MSG_INFO,
				   "%s: no DFS channels left, waiting for NOP to finish",
				   __func__);
			return err;
		}

		iface->freq = channel->freq;
		iface->conf->channel = channel->chan;
		iface->conf->secondary_channel = secondary_channel;
		iface->conf->vht_oper_centr_freq_seg0_idx =
			vht_oper_centr_freq_seg0_idx;
		iface->conf->vht_oper_centr_freq_seg1_idx =
			vht_oper_centr_freq_seg1_idx;

		hostapd_disable_iface(iface);
		hostapd_enable_iface(iface);
		return 0;
	}

	wpa_printf(MSG_DEBUG, "DFS will switch to a new channel %d",
		   channel->chan);
	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_NEW_CHANNEL
		"freq=%d chan=%d sec_chan=%d", channel->freq,
		channel->chan, secondary_channel);

	/* Setup CSA request */
	os_memset(&csa_settings, 0, sizeof(csa_settings));
	csa_settings.cs_count = 5;
	csa_settings.block_tx = 1;
	err = hostapd_set_freq_params(&csa_settings.freq_params,
				      iface->conf->hw_mode,
				      channel->freq,
				      channel->chan,
				      iface->conf->ieee80211n,
				      iface->conf->ieee80211ac,
				      secondary_channel,
				      iface->conf->vht_oper_chwidth,
				      vht_oper_centr_freq_seg0_idx,
				      vht_oper_centr_freq_seg1_idx,
				      iface->current_mode->vht_capab,
				      iface->conf->bwmode);

	if (err) {
		wpa_printf(MSG_ERROR, "DFS failed to calculate CSA freq params");
		hostapd_disable_iface(iface);
		return err;
	}

	for (i = 0; i < iface->num_bss; i++) {
		err = hostapd_switch_channel(iface->bss[i], &csa_settings);
		if (err)
			break;
	}

	if (err) {
		wpa_printf(MSG_WARNING, "DFS failed to schedule CSA (%d) - trying fallback",
			   err);
		iface->freq = channel->freq;
		iface->conf->channel = channel->chan;
		iface->conf->secondary_channel = secondary_channel;
		iface->conf->vht_oper_centr_freq_seg0_idx =
			vht_oper_centr_freq_seg0_idx;
		iface->conf->vht_oper_centr_freq_seg1_idx =
			vht_oper_centr_freq_seg1_idx;

		hostapd_disable_iface(iface);
		hostapd_enable_iface(iface);
		return 0;
	}

	/* Channel configuration will be updated once CSA completes and
	 * ch_switch_notify event is received */

	wpa_printf(MSG_DEBUG, "DFS waiting channel switch event");
	return 0;
}