WiFi how to send OIDs from user mode (windows vista)
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From: Bogdan Dinu on 4 Jan 2007 09:21 Hello everybody. I need to write an application to manage the wireless connections in Windows Vista, using the Wlan API. I also need to communicate with the driver to set some adapter properties, like the RTS Threshold for example. On XP I could send OIDs to the adapter using DeviceIoControl with IOCTL_NDIS_QUERY_GLOBAL_STATS , but this only works for querries now. Using \\\\.\\\\Ndisuio does not seem to work also (I usually get the error code 5 - Access is denied.). Microsoft recommends using WMI, but using wbemtest to the "root\wmi" namespace the MSNdis_80211_RTSThreshold object does not seem to have write permissions for the Ndis80211RTSThreshold property. I did not get to write the code to test it from a program yet, but I also need to set some others OIDs that I did not find to be mapped through WMI. So, my question would be: Does anyone know how can I send OIDs to a wireless network adapter in order to *set* some values in the adapter, from user mode on windows Vista, particullary OID_DOT11_RTS_THRESHOLD ? Can I do this from user mode or do I need to write a kernel component (filter driver or smth) to communicate with the adapter, and interface it with my application? Thanks in advance Bogdan
From: Arkady Frenkel on 4 Jan 2007 09:33 AFAIK IOCTL_NDIS_QUERY_GLOBAL_STATS always worked for queries only ( due to the name :) ). You can't use ndisuio from XP SP2 because it's in use by WZC, you need to build your own protocol driver ( look at ndisprot in DDK ) for that Arkady "Bogdan Dinu" <bdinu(a)ubisoft.ro> wrote in message news:%23R67wuAMHHA.320(a)TK2MSFTNGP06.phx.gbl... > Hello everybody. > > I need to write an application to manage the wireless connections in > Windows Vista, using the Wlan API. I also need to communicate with the > driver to set some adapter properties, like the RTS Threshold for example. > > On XP I could send OIDs to the adapter using DeviceIoControl with > IOCTL_NDIS_QUERY_GLOBAL_STATS , but this only works for querries now. > Using \\\\.\\\\Ndisuio does not seem to work also (I usually get the error > code 5 - Access is denied.). > Microsoft recommends using WMI, but using wbemtest to the "root\wmi" > namespace the MSNdis_80211_RTSThreshold object does not seem to have write > permissions for the Ndis80211RTSThreshold property. I did not get to write > the code to test it from a program yet, but I also need to set some others > OIDs that I did not find to be mapped through WMI. > > So, my question would be: > Does anyone know how can I send OIDs to a wireless network adapter in > order to *set* some values in the adapter, from user mode on windows > Vista, particullary OID_DOT11_RTS_THRESHOLD ? Can I do this from user mode > or do I need to write a kernel component (filter driver or smth) to > communicate with the adapter, and interface it with my application? > > Thanks in advance > > Bogdan >
From: Pavel A. on 4 Jan 2007 14:17 "Arkady Frenkel" wrote: > AFAIK IOCTL_NDIS_QUERY_GLOBAL_STATS always worked for queries only ( due to > the name :) ). Not quite so. Before Vista, there is a trick that lets pass data *to* the driver, so that query actually becomes "set" or even two-way ioctl. Maybe NDIS folks decided that it would be too easy for the Next OS; it's time for us to learn WMI, methods and so on. --PA > You can't use ndisuio from XP SP2 because it's in use by WZC, > you need to build your own protocol driver > ( look at ndisprot in DDK ) for that > Arkady > > "Bogdan Dinu" <bdinu(a)ubisoft.ro> wrote in message > news:%23R67wuAMHHA.320(a)TK2MSFTNGP06.phx.gbl... > > Hello everybody. > > > > I need to write an application to manage the wireless connections in > > Windows Vista, using the Wlan API. I also need to communicate with the > > driver to set some adapter properties, like the RTS Threshold for example. > > > > On XP I could send OIDs to the adapter using DeviceIoControl with > > IOCTL_NDIS_QUERY_GLOBAL_STATS , but this only works for querries now. > > Using \\\\.\\\\Ndisuio does not seem to work also (I usually get the error > > code 5 - Access is denied.). > > Microsoft recommends using WMI, but using wbemtest to the "root\wmi" > > namespace the MSNdis_80211_RTSThreshold object does not seem to have write > > permissions for the Ndis80211RTSThreshold property. I did not get to write > > the code to test it from a program yet, but I also need to set some others > > OIDs that I did not find to be mapped through WMI. > > > > So, my question would be: > > Does anyone know how can I send OIDs to a wireless network adapter in > > order to *set* some values in the adapter, from user mode on windows > > Vista, particullary OID_DOT11_RTS_THRESHOLD ? Can I do this from user mode > > or do I need to write a kernel component (filter driver or smth) to > > communicate with the adapter, and interface it with my application? > > > > Thanks in advance > > > > Bogdan > > > > >
From: Bogdan Dinu on 5 Jan 2007 02:31 On XP you could set the driver data using IOCTL_NDIS_QUERY_GLOBAL_STATS. AFAIK, one could send data by specifying a set OID and putting the information in the output buffer of DeviceIoControl. This has been considered a security flaw on Vista (d'oh) and so DeviceIoControl can now be used for querries only. Microsoft now recommends using WMI to set the data, the problem is that not all the OIDs are mapped through WMI and also, it seems to work for querries only. There are only _read_ rights for the properties. It has been suggested that a driver is the only approach to get into the system; I'll study this possibility and come back later with some conclusions. Thanks for your help. "Pavel A." <pavel_a(a)NOwritemeNO.com> wrote in message news:79E74A56-95AE-4DF3-929C-2B0F9079BC0D(a)microsoft.com... > "Arkady Frenkel" wrote: >> AFAIK IOCTL_NDIS_QUERY_GLOBAL_STATS always worked for queries only ( due >> to >> the name :) ). > > Not quite so. Before Vista, there is a trick that lets pass data *to* the > driver, > so that query actually becomes "set" or even two-way ioctl. > > Maybe NDIS folks decided that it would be too easy for the Next OS; > it's time for us to learn WMI, methods and so on. > > --PA > >> You can't use ndisuio from XP SP2 because it's in use by WZC, >> you need to build your own protocol driver >> ( look at ndisprot in DDK ) for that >> Arkady >> >> "Bogdan Dinu" <bdinu(a)ubisoft.ro> wrote in message >> news:%23R67wuAMHHA.320(a)TK2MSFTNGP06.phx.gbl... >> > Hello everybody. >> > >> > I need to write an application to manage the wireless connections in >> > Windows Vista, using the Wlan API. I also need to communicate with the >> > driver to set some adapter properties, like the RTS Threshold for >> > example. >> > >> > On XP I could send OIDs to the adapter using DeviceIoControl with >> > IOCTL_NDIS_QUERY_GLOBAL_STATS , but this only works for querries now. >> > Using \\\\.\\\\Ndisuio does not seem to work also (I usually get the >> > error >> > code 5 - Access is denied.). >> > Microsoft recommends using WMI, but using wbemtest to the "root\wmi" >> > namespace the MSNdis_80211_RTSThreshold object does not seem to have >> > write >> > permissions for the Ndis80211RTSThreshold property. I did not get to >> > write >> > the code to test it from a program yet, but I also need to set some >> > others >> > OIDs that I did not find to be mapped through WMI. >> > >> > So, my question would be: >> > Does anyone know how can I send OIDs to a wireless network adapter in >> > order to *set* some values in the adapter, from user mode on windows >> > Vista, particullary OID_DOT11_RTS_THRESHOLD ? Can I do this from user >> > mode >> > or do I need to write a kernel component (filter driver or smth) to >> > communicate with the adapter, and interface it with my application? >> > >> > Thanks in advance >> > >> > Bogdan >> > >> >> >>
From: Pavel A. on 6 Jan 2007 11:57
"Bogdan Dinu" <bdinu(a)ubisoft.ro> wrote in message news:eu3rHuJMHHA.1240(a)TK2MSFTNGP03.phx.gbl... > On XP you could set the driver data using IOCTL_NDIS_QUERY_GLOBAL_STATS. AFAIK, one could send data by specifying a set OID > and putting the information in the output buffer of DeviceIoControl. No. --PA |