join.c

linux 内核源代码

	if (bss->mode == IW_MODE_INFRA)
		tmpcap |= WLAN_CAPABILITY_ESS;
	passo->capability = cpu_to_le16(tmpcap);
	lbs_deb_join("ASSOC_CMD: capability=%4X CAPINFO_MASK=%4X\n",
		     tmpcap, CAPINFO_MASK);

done:
	lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
	return ret;
}

int libertas_cmd_80211_ad_hoc_start(wlan_private * priv,
				 struct cmd_ds_command *cmd, void *pdata_buf)
{
	wlan_adapter *adapter = priv->adapter;
	struct cmd_ds_802_11_ad_hoc_start *adhs = &cmd->params.ads;
	int ret = 0;
	int cmdappendsize = 0;
	struct assoc_request * assoc_req = pdata_buf;
	u16 tmpcap = 0;
	size_t ratesize = 0;

	lbs_deb_enter(LBS_DEB_JOIN);

	if (!adapter) {
		ret = -1;
		goto done;
	}

	cmd->command = cpu_to_le16(CMD_802_11_AD_HOC_START);

	/*
	 * Fill in the parameters for 2 data structures:
	 *   1. cmd_ds_802_11_ad_hoc_start command
	 *   2. adapter->scantable[i]
	 *
	 * Driver will fill up SSID, bsstype,IBSS param, Physical Param,
	 *   probe delay, and cap info.
	 *
	 * Firmware will fill up beacon period, DTIM, Basic rates
	 *   and operational rates.
	 */

	memset(adhs->ssid, 0, IW_ESSID_MAX_SIZE);
	memcpy(adhs->ssid, assoc_req->ssid, assoc_req->ssid_len);

	lbs_deb_join("ADHOC_S_CMD: SSID '%s', ssid length %u\n",
	             escape_essid(assoc_req->ssid, assoc_req->ssid_len),
	             assoc_req->ssid_len);

	/* set the BSS type */
	adhs->bsstype = CMD_BSS_TYPE_IBSS;
	adapter->mode = IW_MODE_ADHOC;
	adhs->beaconperiod = cpu_to_le16(MRVDRV_BEACON_INTERVAL);

	/* set Physical param set */
#define DS_PARA_IE_ID   3
#define DS_PARA_IE_LEN  1

	adhs->phyparamset.dsparamset.elementid = DS_PARA_IE_ID;
	adhs->phyparamset.dsparamset.len = DS_PARA_IE_LEN;

	WARN_ON(!assoc_req->channel);

	lbs_deb_join("ADHOC_S_CMD: Creating ADHOC on channel %d\n",
		     assoc_req->channel);

	adhs->phyparamset.dsparamset.currentchan = assoc_req->channel;

	/* set IBSS param set */
#define IBSS_PARA_IE_ID   6
#define IBSS_PARA_IE_LEN  2

	adhs->ssparamset.ibssparamset.elementid = IBSS_PARA_IE_ID;
	adhs->ssparamset.ibssparamset.len = IBSS_PARA_IE_LEN;
	adhs->ssparamset.ibssparamset.atimwindow = 0;

	/* set capability info */
	tmpcap = WLAN_CAPABILITY_IBSS;
	if (assoc_req->secinfo.wep_enabled) {
		lbs_deb_join("ADHOC_S_CMD: WEP enabled, setting privacy on\n");
		tmpcap |= WLAN_CAPABILITY_PRIVACY;
	} else {
		lbs_deb_join("ADHOC_S_CMD: WEP disabled, setting privacy off\n");
	}
	adhs->capability = cpu_to_le16(tmpcap);

	/* probedelay */
	adhs->probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);

	memset(adhs->rates, 0, sizeof(adhs->rates));
	ratesize = min(sizeof(adhs->rates), sizeof(libertas_bg_rates));
	memcpy(adhs->rates, libertas_bg_rates, ratesize);

	/* Copy the ad-hoc creating rates into Current BSS state structure */
	memset(&adapter->curbssparams.rates, 0, sizeof(adapter->curbssparams.rates));
	memcpy(&adapter->curbssparams.rates, &adhs->rates, ratesize);

	/* Set MSB on basic rates as the firmware requires, but _after_
	 * copying to current bss rates.
	 */
	libertas_set_basic_rate_flags(adhs->rates, ratesize);

	lbs_deb_join("ADHOC_S_CMD: rates=%02x %02x %02x %02x \n",
	       adhs->rates[0], adhs->rates[1], adhs->rates[2], adhs->rates[3]);

	lbs_deb_join("ADHOC_S_CMD: AD HOC Start command is ready\n");

	if (libertas_create_dnld_countryinfo_11d(priv)) {
		lbs_deb_join("ADHOC_S_CMD: dnld_countryinfo_11d failed\n");
		ret = -1;
		goto done;
	}

	cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ad_hoc_start) +
				S_DS_GEN + cmdappendsize);

	ret = 0;
done:
	lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
	return ret;
}

int libertas_cmd_80211_ad_hoc_stop(wlan_private * priv,
				struct cmd_ds_command *cmd)
{
	cmd->command = cpu_to_le16(CMD_802_11_AD_HOC_STOP);
	cmd->size = cpu_to_le16(S_DS_GEN);

	return 0;
}

int libertas_cmd_80211_ad_hoc_join(wlan_private * priv,
				struct cmd_ds_command *cmd, void *pdata_buf)
{
	wlan_adapter *adapter = priv->adapter;
	struct cmd_ds_802_11_ad_hoc_join *join_cmd = &cmd->params.adj;
	struct assoc_request * assoc_req = pdata_buf;
	struct bss_descriptor *bss = &assoc_req->bss;
	int cmdappendsize = 0;
	int ret = 0;
	u16 ratesize = 0;
	DECLARE_MAC_BUF(mac);

	lbs_deb_enter(LBS_DEB_JOIN);

	cmd->command = cpu_to_le16(CMD_802_11_AD_HOC_JOIN);

	join_cmd->bss.type = CMD_BSS_TYPE_IBSS;
	join_cmd->bss.beaconperiod = cpu_to_le16(bss->beaconperiod);

	memcpy(&join_cmd->bss.bssid, &bss->bssid, ETH_ALEN);
	memcpy(&join_cmd->bss.ssid, &bss->ssid, bss->ssid_len);

	memcpy(&join_cmd->bss.phyparamset, &bss->phyparamset,
	       sizeof(union ieeetypes_phyparamset));

	memcpy(&join_cmd->bss.ssparamset, &bss->ssparamset,
	       sizeof(union IEEEtypes_ssparamset));

	join_cmd->bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
	lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
	       bss->capability, CAPINFO_MASK);

	/* information on BSSID descriptor passed to FW */
	lbs_deb_join(
	       "ADHOC_J_CMD: BSSID = %s, SSID = '%s'\n",
	       print_mac(mac, join_cmd->bss.bssid),
	       join_cmd->bss.ssid);

	/* failtimeout */
	join_cmd->failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);

	/* probedelay */
	join_cmd->probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);

	adapter->curbssparams.channel = bss->channel;

	/* Copy Data rates from the rates recorded in scan response */
	memset(join_cmd->bss.rates, 0, sizeof(join_cmd->bss.rates));
	ratesize = min_t(u16, sizeof(join_cmd->bss.rates), MAX_RATES);
	memcpy(join_cmd->bss.rates, bss->rates, ratesize);
	if (get_common_rates(adapter, join_cmd->bss.rates, &ratesize)) {
		lbs_deb_join("ADHOC_J_CMD: get_common_rates returns error.\n");
		ret = -1;
		goto done;
	}

	/* Copy the ad-hoc creating rates into Current BSS state structure */
	memset(&adapter->curbssparams.rates, 0, sizeof(adapter->curbssparams.rates));
	memcpy(&adapter->curbssparams.rates, join_cmd->bss.rates, ratesize);

	/* Set MSB on basic rates as the firmware requires, but _after_
	 * copying to current bss rates.
	 */
	libertas_set_basic_rate_flags(join_cmd->bss.rates, ratesize);

	join_cmd->bss.ssparamset.ibssparamset.atimwindow =
	    cpu_to_le16(bss->atimwindow);

	if (assoc_req->secinfo.wep_enabled) {
		u16 tmp = le16_to_cpu(join_cmd->bss.capability);
		tmp |= WLAN_CAPABILITY_PRIVACY;
		join_cmd->bss.capability = cpu_to_le16(tmp);
	}

	if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
		/* wake up first */
		__le32 Localpsmode;

		Localpsmode = cpu_to_le32(WLAN802_11POWERMODECAM);
		ret = libertas_prepare_and_send_command(priv,
					    CMD_802_11_PS_MODE,
					    CMD_ACT_SET,
					    0, 0, &Localpsmode);

		if (ret) {
			ret = -1;
			goto done;
		}
	}

	if (libertas_parse_dnld_countryinfo_11d(priv, bss)) {
		ret = -1;
		goto done;
	}

	cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ad_hoc_join) +
				S_DS_GEN + cmdappendsize);

done:
	lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
	return ret;
}

int libertas_ret_80211_associate(wlan_private * priv,
			      struct cmd_ds_command *resp)
{
	wlan_adapter *adapter = priv->adapter;
	int ret = 0;
	union iwreq_data wrqu;
	struct ieeetypes_assocrsp *passocrsp;
	struct bss_descriptor * bss;
	u16 status_code;

	lbs_deb_enter(LBS_DEB_JOIN);

	if (!adapter->in_progress_assoc_req) {
		lbs_deb_join("ASSOC_RESP: no in-progress association request\n");
		ret = -1;
		goto done;
	}
	bss = &adapter->in_progress_assoc_req->bss;

	passocrsp = (struct ieeetypes_assocrsp *) & resp->params;

	/*
	 * Older FW versions map the IEEE 802.11 Status Code in the association
	 * response to the following values returned in passocrsp->statuscode:
	 *
	 *    IEEE Status Code                Marvell Status Code
	 *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
	 *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
	 *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
	 *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
	 *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
	 *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
	 *
	 * Other response codes:
	 *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
	 *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
	 *                                    association response from the AP)
	 */

	status_code = le16_to_cpu(passocrsp->statuscode);
	switch (status_code) {
	case 0x00:
		lbs_deb_join("ASSOC_RESP: Association succeeded\n");
		break;
	case 0x01:
		lbs_deb_join("ASSOC_RESP: Association failed; invalid "
		             "parameters (status code %d)\n", status_code);
		break;
	case 0x02:
		lbs_deb_join("ASSOC_RESP: Association failed; internal timer "
		             "expired while waiting for the AP (status code %d)"
		             "\n", status_code);
		break;
	case 0x03:
		lbs_deb_join("ASSOC_RESP: Association failed; association "
		             "was refused by the AP (status code %d)\n",
		             status_code);
		break;
	case 0x04:
		lbs_deb_join("ASSOC_RESP: Association failed; authentication "
		             "was refused by the AP (status code %d)\n",
		             status_code);
		break;
	default:
		lbs_deb_join("ASSOC_RESP: Association failed; reason unknown "
		             "(status code %d)\n", status_code);
		break;
	}

	if (status_code) {
		libertas_mac_event_disconnected(priv);
		ret = -1;
		goto done;
	}

	lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_RESP", (void *)&resp->params,
		le16_to_cpu(resp->size) - S_DS_GEN);

	/* Send a Media Connected event, according to the Spec */
	adapter->connect_status = LIBERTAS_CONNECTED;

	lbs_deb_join("ASSOC_RESP: assocated to '%s'\n",
	             escape_essid(bss->ssid, bss->ssid_len));

	/* Update current SSID and BSSID */
	memcpy(&adapter->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
	adapter->curbssparams.ssid_len = bss->ssid_len;
	memcpy(adapter->curbssparams.bssid, bss->bssid, ETH_ALEN);

	lbs_deb_join("ASSOC_RESP: currentpacketfilter is %x\n",
	       adapter->currentpacketfilter);

	adapter->SNR[TYPE_RXPD][TYPE_AVG] = 0;
	adapter->NF[TYPE_RXPD][TYPE_AVG] = 0;

	memset(adapter->rawSNR, 0x00, sizeof(adapter->rawSNR));
	memset(adapter->rawNF, 0x00, sizeof(adapter->rawNF));
	adapter->nextSNRNF = 0;
	adapter->numSNRNF = 0;

	netif_carrier_on(priv->dev);
	netif_wake_queue(priv->dev);

	if (priv->mesh_dev) {
		netif_carrier_on(priv->mesh_dev);
		netif_wake_queue(priv->mesh_dev);
	}

	memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN);
	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
	wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

done:
	lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
	return ret;
}

int libertas_ret_80211_disassociate(wlan_private * priv,
				 struct cmd_ds_command *resp)
{
	lbs_deb_enter(LBS_DEB_JOIN);

	libertas_mac_event_disconnected(priv);

	lbs_deb_leave(LBS_DEB_JOIN);
	return 0;
}

int libertas_ret_80211_ad_hoc_start(wlan_private * priv,
				 struct cmd_ds_command *resp)
{
	wlan_adapter *adapter = priv->adapter;
	int ret = 0;
	u16 command = le16_to_cpu(resp->command);
	u16 result = le16_to_cpu(resp->result);
	struct cmd_ds_802_11_ad_hoc_result *padhocresult;
	union iwreq_data wrqu;
	struct bss_descriptor *bss;
	DECLARE_MAC_BUF(mac);

	lbs_deb_enter(LBS_DEB_JOIN);

	padhocresult = &resp->params.result;

	lbs_deb_join("ADHOC_RESP: size = %d\n", le16_to_cpu(resp->size));
	lbs_deb_join("ADHOC_RESP: command = %x\n", command);
	lbs_deb_join("ADHOC_RESP: result = %x\n", result);

	if (!adapter->in_progress_assoc_req) {
		lbs_deb_join("ADHOC_RESP: no in-progress association request\n");
		ret = -1;
		goto done;
	}
	bss = &adapter->in_progress_assoc_req->bss;

	/*
	 * Join result code 0 --> SUCCESS
	 */
	if (result) {
		lbs_deb_join("ADHOC_RESP: failed\n");
		if (adapter->connect_status == LIBERTAS_CONNECTED) {
			libertas_mac_event_disconnected(priv);
		}
		ret = -1;
		goto done;
	}

	/*
	 * Now the join cmd should be successful
	 * If BSSID has changed use SSID to compare instead of BSSID
	 */
	lbs_deb_join("ADHOC_RESP: associated to '%s'\n",
	             escape_essid(bss->ssid, bss->ssid_len));

	/* Send a Media Connected event, according to the Spec */
	adapter->connect_status = LIBERTAS_CONNECTED;

	if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
		/* Update the created network descriptor with the new BSSID */
		memcpy(bss->bssid, padhocresult->bssid, ETH_ALEN);
	}

	/* Set the BSSID from the joined/started descriptor */
	memcpy(&adapter->curbssparams.bssid, bss->bssid, ETH_ALEN);

	/* Set the new SSID to current SSID */
	memcpy(&adapter->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
	adapter->curbssparams.ssid_len = bss->ssid_len;

	netif_carrier_on(priv->dev);
	netif_wake_queue(priv->dev);

	if (priv->mesh_dev) {
		netif_carrier_on(priv->mesh_dev);
		netif_wake_queue(priv->mesh_dev);
	}

	memset(&wrqu, 0, sizeof(wrqu));
	memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN);
	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
	wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

	lbs_deb_join("ADHOC_RESP: - Joined/Started Ad Hoc\n");
	lbs_deb_join("ADHOC_RESP: channel = %d\n", adapter->curbssparams.channel);
	lbs_deb_join("ADHOC_RESP: BSSID = %s\n",
		     print_mac(mac, padhocresult->bssid));

done:
	lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
	return ret;
}

int libertas_ret_80211_ad_hoc_stop(wlan_private * priv,
				struct cmd_ds_command *resp)
{
	lbs_deb_enter(LBS_DEB_JOIN);

	libertas_mac_event_disconnected(priv);

	lbs_deb_leave(LBS_DEB_JOIN);
	return 0;
}