rtusb_info.c

台湾RALink公司的 rt2570无线 802.11g 网卡的 驱动的源代码 ,支持linux2.4以上的 内河

		if (++range->num_frequency == IW_MAX_FREQUENCIES)
		break;
	}

	range->max_qual.qual = 70; /* what is correct max? This was not
					* documented exactly. At least
					* 69 has been observed. */
	range->max_qual.level = 0; /* dB */
	range->max_qual.noise = 0; /* dB */

	/* What would be suitable values for "average/typical" qual? */
	range->avg_qual.qual = 20;
	range->avg_qual.level = -60;
	range->avg_qual.noise = -95;
	range->sensitivity = 3;

	range->max_encoding_tokens = NR_WEP_KEYS;
	range->num_encoding_sizes = 2;
	range->encoding_size[0] = 5;
	range->encoding_size[1] = 13;

#if 0
	over2 = 0;
	len = prism2_get_datarates(dev, rates);
	range->num_bitrates = 0;
	for (i = 0; i < len; i++) {
		if (range->num_bitrates < IW_MAX_BITRATES) {
			range->bitrate[range->num_bitrates] =
				rates[i] * 500000;
			range->num_bitrates++;
		}
		if (rates[i] == 0x0b || rates[i] == 0x16)
			over2 = 1;
	}
	/* estimated maximum TCP throughput values (bps) */
	range->throughput = over2 ? 5500000 : 1500000;
    #endif
	range->min_rts = 0;
	range->max_rts = 2347;
	range->min_frag = 256;
	range->max_frag = 2346;

	return 0;
}

int rtusb_ioctl_giwap(struct net_device *dev,
		      struct iw_request_info *info,
		      struct sockaddr *ap_addr, char *extra)
{

	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;

	if (INFRA_ON(pAdapter) || ADHOC_ON(pAdapter))
	{
		ap_addr->sa_family = ARPHRD_ETHER;
		memcpy(ap_addr->sa_data, &pAdapter->PortCfg.Bssid, ETH_ALEN);
	}
	else
	{
		DBGPRINT(RT_DEBUG_TRACE, "ioctl::SIOCGIWAP(=EMPTY)\n");
		return -ENOTCONN;
	}

	return 0;
}

/*
 * Units are in db above the noise floor. That means the
 * rssi values reported in the tx/rx descriptors in the
 * driver are the SNR expressed in db.
 *
 * If you assume that the noise floor is -95, which is an
 * excellent assumption 99.5 % of the time, then you can
 * derive the absolute signal level (i.e. -95 + rssi). 
 * There are some other slight factors to take into account
 * depending on whether the rssi measurement is from 11b,
 * 11g, or 11a.   These differences are at most 2db and
 * can be documented.
 *
 * NB: various calculations are based on the orinoco/wavelan
 *     drivers for compatibility
 */
static void
set_quality(struct iw_quality *iq, u_int rssi)
{
	iq->qual = rssi;
	/* NB: max is 94 because noise is hardcoded to 161 */
	if (iq->qual > 94)
		iq->qual = 94;

	iq->noise = RSSI_TO_DBM_OFFSET;		/* -95dBm */
	iq->level = iq->noise + iq->qual;
	iq->updated = 7;
}
int rtusb_ioctl_iwaplist(struct net_device *dev,
			struct iw_request_info *info,
			struct iw_point *data, char *extra)
{

	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;
	struct sockaddr addr[IW_MAX_AP];
	struct iw_quality qual[IW_MAX_AP];
	int i;
	
	for (i = 0; i <IW_MAX_AP ; i++)
	{
		if (i >=  pAdapter->PortCfg.BssTab.BssNr)
			break;
		addr[i].sa_family = ARPHRD_ETHER;
			memcpy(addr[i].sa_data, &pAdapter->PortCfg.BssTab.BssEntry[i].Bssid, MAC_ADDR_LEN);
		set_quality(&qual[i], pAdapter->PortCfg.BssTab.BssEntry[i].Rssi);
	}
	data->length = i;
	memcpy(extra, &addr, i*sizeof(addr[0]));
	data->flags = 1;		/* signal quality present (sort of) */
	memcpy(extra + i*sizeof(addr[0]), &qual, i*sizeof(qual[i]));

	return 0;
}
#ifdef SIOCGIWSCAN

int rtusb_ioctl_siwscan(struct net_device *dev,
			struct iw_request_info *info,
			struct iw_point *data, char *extra)
{
	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;
	int Status = STATUS_SUCCESS;

    	do{

		if ((pAdapter->Mlme.CntlMachine.CurrState != CNTL_IDLE) && (pAdapter->MLMEThr_pid > 0))
		{
			DBGPRINT(RT_DEBUG_ERROR, "!!! MLME busy, reset MLME state machine !!!\n");
			MlmeRestartStateMachine(pAdapter);
			MlmePostRestartStateMachine(pAdapter);
			return (RTUSBEnqueueCmdFromNdis(pAdapter, OID_802_11_BSSID_LIST_SCAN, TRUE, NULL, 0));
			
		}
		 
		pAdapter->Mlme.CntlAux.CurrReqIsFromNdis = FALSE;
		// Reset Missed scan number
		pAdapter->PortCfg.IgnoredScanNumber = 0;

		MlmeEnqueue(pAdapter, 
				MLME_CNTL_STATE_MACHINE, 
				OID_802_11_BSSID_LIST_SCAN, 
				0, 
				NULL);
		RTUSBUp(pAdapter, (&(pAdapter->mlme_semaphore)));

		Status = NDIS_STATUS_SUCCESS;
	}while(0);
	return 0;
}
int
rtusb_ioctl_giwscan(struct net_device *dev,
			struct iw_request_info *info,
			struct iw_point *data, char *extra)
{

	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;
	int i=2, j;
	char *current_ev = extra;
	char *end_buf = extra + IW_SCAN_MAX_DATA;
	char *current_val;
	struct iw_event iwe;

	if (RTMP_TEST_FLAG(pAdapter, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS)){
		/*
		 * Still scanning, indicate the caller should try again.
		 */
		return -EAGAIN;
	}
	for (i = 0; i < pAdapter->PortCfg.BssTab.BssNr; i++) 
	{
		if (current_ev >= end_buf)
			break;

		//================================
		memset(&iwe, 0, sizeof(iwe));
		iwe.cmd = SIOCGIWAP;
		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
				memcpy(iwe.u.ap_addr.sa_data, &pAdapter->PortCfg.BssTab.BssEntry[i].Bssid, ETH_ALEN);
			current_ev = iwe_stream_add_event(current_ev,end_buf, &iwe, IW_EV_ADDR_LEN);
		//================================
		memset(&iwe, 0, sizeof(iwe));
		iwe.cmd = SIOCGIWMODE;
		if (pAdapter->PortCfg.BssTab.BssEntry[i].BssType == Ndis802_11IBSS)
		{
			iwe.u.mode = IW_MODE_ADHOC;
		}
		else if (pAdapter->PortCfg.BssTab.BssEntry[i].BssType == Ndis802_11Infrastructure)
		{
			iwe.u.mode = IW_MODE_INFRA;
		}
		else
		{
			iwe.u.mode = IW_MODE_AUTO;
		}

		iwe.len = IW_EV_UINT_LEN;
		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,  IW_EV_UINT_LEN);
		//================================
		memset(&iwe, 0, sizeof(iwe));
		iwe.cmd = SIOCGIWESSID;
		iwe.u.data.length = pAdapter->PortCfg.BssTab.BssEntry[i].SsidLen;
		iwe.u.data.flags = 1;
		current_ev = iwe_stream_add_point(current_ev,end_buf, &iwe, pAdapter->PortCfg.BssTab.BssEntry[i].Ssid);
		//================================
		memset(&iwe, 0, sizeof(iwe));
		iwe.cmd = SIOCGIWENCODE;
		if (CAP_IS_PRIVACY_ON (pAdapter->PortCfg.BssTab.BssEntry[i].CapabilityInfo ))
			iwe.u.data.flags =IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
		else
			iwe.u.data.flags = IW_ENCODE_DISABLED;
		current_ev = iwe_stream_add_point(current_ev, end_buf,&iwe,  pAdapter->PortCfg.BssTab.BssEntry[i].Ssid);

		//================================
		memset(&iwe, 0, sizeof(iwe));
		iwe.cmd = SIOCGIWRATE;
		current_val = current_ev + IW_EV_LCP_LEN;
		//for (j = 0; j < pAdapter->PortCfg.BssTab.BssEntry[i].RatesLen;j++)
		for (j = 0; j < 1;j++)
		{
			iwe.u.bitrate.value = RateIdToMbps[pAdapter->PortCfg.BssTab.BssEntry[i].Rates[i]/2] * 1000000;
			iwe.u.bitrate.disabled = 0;
			current_val = iwe_stream_add_value(current_ev,
				current_val, end_buf, &iwe,
				IW_EV_PARAM_LEN);
		}
		//================================
		memset(&iwe, 0, sizeof(iwe));
		iwe.cmd = SIOCGIWFREQ;
		if (INFRA_ON(pAdapter) || ADHOC_ON(pAdapter))
			iwe.u.freq.m = pAdapter->PortCfg.BssTab.BssEntry[i].Channel;
		else
			iwe.u.freq.m = pAdapter->PortCfg.BssTab.BssEntry[i].Channel;
		iwe.u.freq.e = 0;
		iwe.u.freq.i = 0;
		current_ev = iwe_stream_add_event(current_ev,end_buf, &iwe, IW_EV_FREQ_LEN);
		//================================
		memset(&iwe, 0, sizeof(iwe));

	}
	data->length = current_ev - extra;
	DBGPRINT(RT_DEBUG_TRACE,"rtusb_ioctl_giwscan. %d BSS returned\n",pAdapter->PortCfg.BssTab.BssNr);						
	return 0;
}
#endif
int rtusb_ioctl_siwessid(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_point *data, char *essid)
{

	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;
	NDIS_802_11_SSID					Ssid, *pSsid=NULL;

	memset(&Ssid, 0x00, sizeof(NDIS_802_11_SSID));
	if (data->flags)
	{
		if (data->length > IW_ESSID_MAX_SIZE)
		{
			return -E2BIG;
		}

		memcpy(Ssid.Ssid, essid, (data->length - 1));
		Ssid.SsidLength = data->length - 1;	//minus null character.
	}
	else
		Ssid.SsidLength = 0;  // ANY ssid 

	pSsid = &Ssid;

	 // tell CNTL state machine to call NdisMSetInformationComplete() after completing
	// this request, because this request is initiated by NDIS.
	pAdapter->Mlme.CntlAux.CurrReqIsFromNdis = FALSE; 
	DBGPRINT(RT_DEBUG_TRACE,"--->Ssid.SsidLength = %d, %s\n",Ssid.SsidLength, Ssid.Ssid);		

	if (pAdapter->MLMEThr_pid > 0)
		MlmeEnqueue(pAdapter, 
				MLME_CNTL_STATE_MACHINE, 
				OID_802_11_SSID,
				sizeof(NDIS_802_11_SSID),
				(VOID *)pSsid
				);

	RTUSBUp(pAdapter, (&(pAdapter->mlme_semaphore)));
	return 0;
}

int rtusb_ioctl_giwessid(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_point *data, char *essid)
{

	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;

	data->flags = 1;		/* active */
	if(pAdapter->MediaState == NdisMediaStateConnected)
	{
		DBGPRINT(RT_DEBUG_TRACE,"MediaState is connected\n");
		data->length = pAdapter->PortCfg.SsidLen;
		memcpy(essid, pAdapter->PortCfg.Ssid, pAdapter->PortCfg.SsidLen);
		pAdapter->PortCfg.Ssid[pAdapter->PortCfg.SsidLen] = '\0';
		DBGPRINT(RT_DEBUG_TRACE,"pAdapter->PortCfg.Ssid=%s , Ssidlen = %d\n",pAdapter->PortCfg.Ssid, pAdapter->PortCfg.SsidLen);
	}
	else
	{//the ANY ssid was specified
		data->length  = 0;
		DBGPRINT(RT_DEBUG_TRACE,"MediaState is not connected, ess\n");
	}
	DBGPRINT(RT_DEBUG_TRACE, "<==rtusb_ioctl_giwessid:: (Len=%d, ssid=%s...)\n", pAdapter->PortCfg.SsidLen, pAdapter->PortCfg.Ssid);

	return 0;

}

int rtusb_ioctl_siwnickn(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_point *data, char *nickname)
{
	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;

	if (data->length > IEEE80211_NWID_LEN)
		return -EINVAL;

	memset(pAdapter->nickn, 0, IEEE80211_NWID_LEN);
	memcpy(pAdapter->nickn, nickname, data->length);
	pAdapter->nicknamelen = data->length;


	return 0;
}

int rtusb_ioctl_giwnickn(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_point *data, char *nickname)
{
	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;

	if (data->length > pAdapter->nicknamelen + 1)
		data->length = pAdapter->nicknamelen + 1;
	if (data->length > 0) {
		memcpy(nickname, pAdapter->nickn, data->length-1);
		nickname[data->length-1] = '\0';
	}
	return 0;
}


int rtusb_ioctl_siwrts(struct net_device *dev,
		       struct iw_request_info *info,
		       struct iw_param *rts, char *extra)
{
	PRT2570ADAPTER pAdapter = (PRT2570ADAPTER) dev->priv;
	u16 val;

	if (rts->disabled)
		val = MAX_RTS_THRESHOLD;
	else if (1 > rts->value || rts->value > MAX_RTS_THRESHOLD)
		return -EINVAL;
	else