DeviceIoControl & OID_802_11_BSSID_LIST_SCAN ?

[clintsinger]

Hi All, I am hoping that there is someone out there who will understand my problem as there seems to be very little documentation avalible to read the values of the NDIS 5.1 compatible drivers. I would like to initiate a scan of the BSSID's in my network area. The documentaion tells me I need to use OID_802_11_BSSID_LIST_SCAN to force the wirelss nic to scan the area for access points. Unforetunately I haven't been able to guess how to call this feature. The code that I tried is the following

	PNDISUIO_QUERY_OID		pQueryOid		= NULL;

	pSetOid = (PNDISUIO_SET_OID)&QueryBuffer[0];
	pSetOid->ptcDeviceName = _T("WLAGS461");
	pSetOid->Oid = OID_802_11_BSSID_LIST_SCAN;
		
	hr = DeviceIoControl(
			m_hNdisUio,
			IOCTL_NDISUIO_SET_OID_VALUE,
			(LPVOID) pSetOid,
			sizeof(PNDISUIO_SET_OID),
			NULL,
			0,
			&dwBytesReturned,
			NULL);

but it fails with error 0x57 (parameter not correct) and I don't know what to change. I also have the following code that I have been using to get the aquired list (or the one already in the NIC database)

	PNDISUIO_QUERY_OID		pQueryOid		= NULL;

	pQueryOid = (PNDISUIO_QUERY_OID)&QueryBuffer[0];
	pQueryOid->ptcDeviceName = _T("WLAGS461");
	pQueryOid->Oid = OID_802_11_BSSID_LIST;

	hr = DeviceIoControl(
			m_hNdisUio,
			IOCTL_NDISUIO_QUERY_OID_VALUE,
			(LPVOID) pQueryOid,
			0xFFF,
			(LPVOID) pQueryOid,
			0xFFF,
			&dwBytesReturned,
			NULL);

and it works fine. I get a list of access points. Anyone have any suggestions? Sincerly, Clint Singer P.S. I should mention that I am also working on Windows CE (although that shouldn't make a differance except for the ptcDeviceName) paramter.

[amitalonm]

Hi, please have a look here: WLAN Scan with NDIS Miniport and Much More[^] I hope that it will help you. in case that you already overcame your problem and in case that you can contribute to the questions that I asked under the responses of the article that I just gave you - I will appreciate your help as well. Thanks, -- Amit.