C++ os_get_reltime函数代码示例

void eloop_run(void)
{
	int num_poll_fds;
	int timeout_ms = 0;
	int res;

	struct os_reltime tv, now;

	bzero(&now, sizeof(struct os_reltime));

	while (!eloop.terminate &&
		   (!dl_list_empty(&eloop.timeout) || eloop.readers.count > 0 ||
			eloop.writers.count > 0 || eloop.exceptions.count > 0)) {

		struct eloop_timeout *timeout;
		timeout = dl_list_first(&eloop.timeout, struct eloop_timeout, list);
		if (timeout) {
			os_get_reltime(&now);
			if (os_reltime_before(&now, &timeout->time))
				os_reltime_sub(&timeout->time, &now, &tv);
			else
				tv.sec = tv.usec = 0;
			timeout_ms = tv.sec * 1000 + tv.usec / 1000;
		}

		num_poll_fds =
			eloop_sock_table_set_fds(&eloop.readers, &eloop.writers,
									 &eloop.exceptions, eloop.pollfds, eloop.pollfds_map, eloop.max_pollfd_map);

		res = poll(eloop.pollfds, num_poll_fds, timeout ? timeout_ms : -1);
		if (res < 0 && errno != EINTR && errno != 0) {
			fprintf(stderr, "eloop: poll: %s", strerror(errno));
			goto out;
		}

		timeout = dl_list_first(&eloop.timeout, struct eloop_timeout, list);
		if (timeout) {
			os_get_reltime(&now);
			if (!os_reltime_before(&now, &timeout->time)) {
				void *eloop_data = timeout->eloop_data;
				void *user_data = timeout->user_data;
				eloop_timeout_handler handler = timeout->handler;
				eloop_remove_timeout(timeout);
				handler(eloop_data, user_data);
			}
		}

		if (res <= 0)
			continue;

		eloop_sock_table_dispatch(&eloop.readers, &eloop.writers,
								  &eloop.exceptions, eloop.pollfds_map, eloop.max_pollfd_map);

	}

out:
	return;
}

static void wpas_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
{
	struct wpa_supplicant *wpa_s = work->wpa_s;
	struct wpa_driver_scan_params *params = work->ctx;
	int ret;

	if (deinit) {
		wpa_scan_free_params(params);
		return;
	}

	wpa_supplicant_notify_scanning(wpa_s, 1);

	if (wpa_s->clear_driver_scan_cache)
		params->only_new_results = 1;
	ret = wpa_drv_scan(wpa_s, params);
	wpa_scan_free_params(params);
	work->ctx = NULL;
	if (ret) {
		wpa_supplicant_notify_scanning(wpa_s, 0);
		wpas_notify_scan_done(wpa_s, 0);
		radio_work_done(work);
		return;
	}

	os_get_reltime(&wpa_s->scan_trigger_time);
	wpa_s->scan_runs++;
	wpa_s->normal_scans++;
	wpa_s->own_scan_requested = 1;
	wpa_s->clear_driver_scan_cache = 0;
	wpa_s->scan_work = work;
}

void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
{
	size_t i, j;

	wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");

	for (i = 0; i < wpa_s->osu_prov_count; i++) {
		struct osu_provider *osu = &wpa_s->osu_prov[i];
		for (j = 0; j < osu->icon_count; j++) {
			struct osu_icon *icon = &osu->icon[j];
			if (icon->id || icon->failed)
				continue;

			wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
				   "from " MACSTR, icon->filename,
				   MAC2STR(osu->bssid));
			os_get_reltime(&wpa_s->osu_icon_fetch_start);
			if (hs20_anqp_send_req(wpa_s, osu->bssid,
					       BIT(HS20_STYPE_ICON_REQUEST),
					       (u8 *) icon->filename,
					       os_strlen(icon->filename),
					       0) < 0) {
				icon->failed = 1;
				continue;
			}
			return;
		}
	}

	wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
	hs20_osu_fetch_done(wpa_s);
}

static int gas_query_tx(struct gas_query *gas, struct gas_query_pending *query,
			struct wpabuf *req, unsigned int wait_time)
{
	int res, prot = pmf_in_use(gas->wpa_s, query->addr);
	const u8 *bssid;
	const u8 wildcard_bssid[ETH_ALEN] = {
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
	};

	wpa_printf(MSG_DEBUG, "GAS: Send action frame to " MACSTR " len=%u "
		   "freq=%d prot=%d", MAC2STR(query->addr),
		   (unsigned int) wpabuf_len(req), query->freq, prot);
	if (prot) {
		u8 *categ = wpabuf_mhead_u8(req);
		*categ = WLAN_ACTION_PROTECTED_DUAL;
	}
	os_get_reltime(&query->last_oper);
	if (gas->wpa_s->max_remain_on_chan &&
	    wait_time > gas->wpa_s->max_remain_on_chan)
		wait_time = gas->wpa_s->max_remain_on_chan;
	if (!gas->wpa_s->conf->gas_address3 ||
	    (gas->wpa_s->current_ssid &&
	     gas->wpa_s->wpa_state >= WPA_ASSOCIATED &&
	     os_memcmp(query->addr, gas->wpa_s->bssid, ETH_ALEN) == 0))
		bssid = query->addr;
	else
		bssid = wildcard_bssid;
	res = offchannel_send_action(gas->wpa_s, query->freq, query->addr,
				     gas->wpa_s->own_addr, bssid,
				     wpabuf_head(req), wpabuf_len(req),
				     wait_time, gas_query_tx_status, 0);
	if (res == 0)
		query->offchannel_tx_started = 1;
	return res;
}

/**
 * wpa_bss_update_end - End a BSS table update from scan results
 * @wpa_s: Pointer to wpa_supplicant data
 * @info: Information about scan parameters
 * @new_scan: Whether this update round was based on a new scan
 *
 * This function is called at the end of each BSS table update round for new
 * scan results. The start of the update was indicated with a call to
 * wpa_bss_update_start().
 */
void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
			int new_scan)
{
	struct wpa_bss *bss, *n;

	os_get_reltime(&wpa_s->last_scan);
	if (!new_scan)
		return; /* do not expire entries without new scan */

	dl_list_for_each_safe(bss, n, &wpa_s->bss, struct wpa_bss, list) {
		if (wpa_bss_in_use(wpa_s, bss))
			continue;
		if (!wpa_bss_included_in_scan(bss, info))
			continue; /* expire only BSSes that were scanned */
		if (bss->last_update_idx < wpa_s->bss_update_idx)
			bss->scan_miss_count++;
		if (bss->scan_miss_count >=
		    wpa_s->conf->bss_expiration_scan_count) {
			wpa_bss_remove(wpa_s, bss, "no match in scan");
		}
	}

	wpa_printf(MSG_DEBUG, "BSS: last_scan_res_used=%u/%u",
		   wpa_s->last_scan_res_used, wpa_s->last_scan_res_size);
}

static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
{
	size_t i, j;
	struct os_reltime now, tmp;
	int dur;

	os_get_reltime(&now);
	os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
	dur = tmp.sec * 1000 + tmp.usec / 1000;
	wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
		   dur, res);

	for (i = 0; i < wpa_s->osu_prov_count; i++) {
		struct osu_provider *osu = &wpa_s->osu_prov[i];
		for (j = 0; j < osu->icon_count; j++) {
			struct osu_icon *icon = &osu->icon[j];
			if (icon->id || icon->failed)
				continue;
			if (res < 0)
				icon->failed = 1;
			else
				icon->id = wpa_s->osu_icon_id;
			return;
		}
	}
}

int eloop_cancel_timeout_one(eloop_timeout_handler handler,
			     void *eloop_data, void *user_data,
			     struct os_reltime *remaining)
{
	struct eloop_timeout *timeout, *prev;
	int removed = 0;
	struct os_reltime now;

	os_get_reltime(&now);
	remaining->sec = remaining->usec = 0;

	dl_list_for_each_safe(timeout, prev, &eloop.timeout,
			      struct eloop_timeout, list) {
		if (timeout->handler == handler &&
		    (timeout->eloop_data == eloop_data) &&
		    (timeout->user_data == user_data)) {
			removed = 1;
			if (os_reltime_before(&now, &timeout->time))
				os_reltime_sub(&timeout->time, &now, remaining);
			eloop_remove_timeout(timeout);
			break;
		}
	}
	return removed;
}

int ibss_rsn_start(struct ibss_rsn *ibss_rsn, const u8 *addr)
{
	struct ibss_rsn_peer *peer;
	int res;

	if (!ibss_rsn)
		return -1;

	/* if the peer already exists, exit immediately */
	peer = ibss_rsn_get_peer(ibss_rsn, addr);
	if (peer)
		return 0;

	peer = ibss_rsn_peer_init(ibss_rsn, addr);
	if (peer == NULL)
		return -1;

	/* Open Authentication: send first Authentication frame */
	res = ibss_rsn_send_auth(ibss_rsn, addr, 1);
	if (res) {
		/*
		 * The driver may not support Authentication frame exchange in
		 * IBSS. Ignore authentication and go through EAPOL exchange.
		 */
		peer->authentication_status |= IBSS_RSN_AUTH_BY_US;
		return ibss_rsn_auth_init(ibss_rsn, peer);
	} else {
		os_get_reltime(&peer->own_auth_tx);
		eloop_register_timeout(1, 0, ibss_rsn_auth_timeout, peer, NULL);
	}

	return 0;
}

/**
 * pmksa_cache_auth_list - Dump text list of entries in PMKSA cache
 * @pmksa: Pointer to PMKSA cache data from pmksa_cache_auth_init()
 * @buf: Buffer for the list
 * @len: Length of the buffer
 * Returns: Number of bytes written to buffer
 *
 * This function is used to generate a text format representation of the
 * current PMKSA cache contents for the ctrl_iface PMKSA command.
 */
int pmksa_cache_auth_list(struct rsn_pmksa_cache *pmksa, char *buf, size_t len)
{
	int i, ret;
	char *pos = buf;
	struct rsn_pmksa_cache_entry *entry;
	struct os_reltime now;

	os_get_reltime(&now);
	ret = os_snprintf(pos, buf + len - pos,
			  "Index / SPA / PMKID / expiration (in seconds) / opportunistic\n");
	if (os_snprintf_error(buf + len - pos, ret))
		return pos - buf;
	pos += ret;
	i = 0;
	entry = pmksa->pmksa;
	while (entry) {
		ret = os_snprintf(pos, buf + len - pos, "%d " MACSTR " ",
				  i, MAC2STR(entry->spa));
		if (os_snprintf_error(buf + len - pos, ret))
			return pos - buf;
		pos += ret;
		pos += wpa_snprintf_hex(pos, buf + len - pos, entry->pmkid,
					PMKID_LEN);
		ret = os_snprintf(pos, buf + len - pos, " %d %d\n",
				  (int) (entry->expiration - now.sec),
				  entry->opportunistic);
		if (os_snprintf_error(buf + len - pos, ret))
			return pos - buf;
		pos += ret;
		entry = entry->next;
	}
	return pos - buf;
}

void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
				 const u8 *da, u16 reason_code)
{
	struct wpa_ssid *ssid;
	struct os_reltime now;

	if (wpa_s->wpa_state != WPA_COMPLETED)
		return;
	ssid = wpa_s->current_ssid;
	if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
		return;
	if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
		return;
	if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
	    reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
		return;
	if (wpa_s->sme.sa_query_count > 0)
		return;

	os_get_reltime(&now);
	if (wpa_s->sme.last_unprot_disconnect.sec &&
	    !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
		return; /* limit SA Query procedure frequency */
	wpa_s->sme.last_unprot_disconnect = now;

	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
		"possible AP/STA state mismatch - trigger SA Query");
	sme_start_sa_query(wpa_s);
}

static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	unsigned int timeout, sec, usec;
	u8 *trans_id, *nbuf;

	if (wpa_s->sme.sa_query_count > 0 &&
	    sme_check_sa_query_timeout(wpa_s))
		return;

	nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
				wpa_s->sme.sa_query_count + 1,
				WLAN_SA_QUERY_TR_ID_LEN);
	if (nbuf == NULL)
		return;
	if (wpa_s->sme.sa_query_count == 0) {
		/* Starting a new SA Query procedure */
		os_get_reltime(&wpa_s->sme.sa_query_start);
	}
	trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
	wpa_s->sme.sa_query_trans_id = nbuf;
	wpa_s->sme.sa_query_count++;

	os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);

	timeout = sa_query_retry_timeout;
	sec = ((timeout / 1000) * 1024) / 1000;
	usec = (timeout % 1000) * 1024;
	eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);

	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
		wpa_s->sme.sa_query_count);

	sme_send_sa_query_req(wpa_s, trans_id);
}

void eloop_destroy(void)
{
	struct eloop_timeout *timeout, *prev;
	struct os_reltime now;

	os_get_reltime(&now);
	dl_list_for_each_safe(timeout, prev, &eloop.timeout,
			      struct eloop_timeout, list) {
		int sec, usec;
		sec = timeout->time.sec - now.sec;
		usec = timeout->time.usec - now.usec;
		if (timeout->time.usec < now.usec) {
			sec--;
			usec += 1000000;
		}
		wpa_printf(MSG_INFO, "ELOOP: remaining timeout: %d.%06d "
			   "eloop_data=%p user_data=%p handler=%p",
			   sec, usec, timeout->eloop_data, timeout->user_data,
			   timeout->handler);
		wpa_trace_dump_funcname("eloop unregistered timeout handler",
					timeout->handler);
		wpa_trace_dump("eloop timeout", timeout);
		eloop_remove_timeout(timeout);
	}
	eloop_sock_table_destroy(&eloop.readers);
	eloop_sock_table_destroy(&eloop.writers);
	eloop_sock_table_destroy(&eloop.exceptions);
	os_free(eloop.signals);

#ifdef CONFIG_ELOOP_POLL
	os_free(eloop.pollfds);
	os_free(eloop.pollfds_map);
#endif /* CONFIG_ELOOP_POLL */
}

int hostapd_start_dfs_cac(struct hostapd_iface *iface, int mode, int freq,
			  int channel, int ht_enabled, int vht_enabled,
			  int sec_channel_offset, int vht_oper_chwidth,
			  int center_segment0, int center_segment1)
{
	struct hostapd_data *hapd = iface->bss[0];
	struct hostapd_freq_params data;
	int res;

	if (!hapd->driver || !hapd->driver->start_dfs_cac)
		return 0;

	if (!iface->conf->ieee80211h) {
		wpa_printf(MSG_ERROR, "Can't start DFS CAC, DFS functionality "
			   "is not enabled");
		return -1;
	}

	if (hostapd_set_freq_params(&data, mode, freq, channel, ht_enabled,
				    vht_enabled, sec_channel_offset,
				    vht_oper_chwidth, center_segment0,
				    center_segment1,
				    iface->current_mode->vht_capab)) {
		wpa_printf(MSG_ERROR, "Can't set freq params");
		return -1;
	}

	res = hapd->driver->start_dfs_cac(hapd->drv_priv, &data);
	if (!res) {
		iface->cac_started = 1;
		os_get_reltime(&iface->dfs_cac_start);
	}

	return res;
}

/**
 * accounting_sta_start - Start STA accounting
 * @hapd: hostapd BSS data
 * @sta: The station
 */
void accounting_sta_start(struct hostapd_data *hapd, struct sta_info *sta)
{
	struct radius_msg *msg;
	int interval;

	if (sta->acct_session_started)
		return;

	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
		       HOSTAPD_LEVEL_INFO,
		       "starting accounting session %08X-%08X",
		       sta->acct_session_id_hi, sta->acct_session_id_lo);

	os_get_reltime(&sta->acct_session_start);
	sta->last_rx_bytes = sta->last_tx_bytes = 0;
	sta->acct_input_gigawords = sta->acct_output_gigawords = 0;
	hostapd_drv_sta_clear_stats(hapd, sta->addr);

	if (!hapd->conf->radius->acct_server)
		return;

	if (sta->acct_interim_interval)
		interval = sta->acct_interim_interval;
	else
		interval = ACCT_DEFAULT_UPDATE_INTERVAL;
	eloop_register_timeout(interval, 0, accounting_interim_update,
			       hapd, sta);

	msg = accounting_msg(hapd, sta, RADIUS_ACCT_STATUS_TYPE_START);
	if (msg &&
	    radius_client_send(hapd->radius, msg, RADIUS_ACCT, sta->addr) < 0)
		radius_msg_free(msg);

	sta->acct_session_started = 1;
}

static void pmksa_cache_set_expiration(struct rsn_pmksa_cache *pmksa)
{
	int sec;
	struct rsn_pmksa_cache_entry *entry;
	struct os_reltime now;

	eloop_cancel_timeout(pmksa_cache_expire, pmksa, NULL);
	eloop_cancel_timeout(pmksa_cache_reauth, pmksa, NULL);
	if (pmksa->pmksa == NULL)
		return;
	os_get_reltime(&now);
	sec = pmksa->pmksa->expiration - now.sec;
	if (sec < 0)
		sec = 0;
	eloop_register_timeout(sec + 1, 0, pmksa_cache_expire, pmksa, NULL);

	entry = pmksa->sm->cur_pmksa ? pmksa->sm->cur_pmksa :
		pmksa_cache_get(pmksa, pmksa->sm->bssid, NULL, NULL);
	if (entry) {
		sec = pmksa->pmksa->reauth_time - now.sec;
		if (sec < 0)
			sec = 0;
		eloop_register_timeout(sec, 0, pmksa_cache_reauth, pmksa,
				       NULL);
	}
}