As per my understanding, To achieve this goal I have to enable some kernel configuration of USB and Ethernet interface on Pandaboard. I am able to build the kernel and load the file system but I am not able to see any ethernet interface as an output to "ifconfig" command as well as nothing in the dmesg. I have set below kernel configurations to enable the interface but not able to enable the interface.
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_HCD_OMAP=y
CONFIG_USB_USBNET=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_ROOT_NFS=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_USB=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
Did I miss anything in configuration? I am using the kernel "4.16.0-rc1".
Thanks in Advance!!!
I am able to enable the ethernet interface. As per my understanding, on the Pandaboard ethernet is over USB interface. So in order to enable ethernet, I have to enable below few more kernel configuration apart from the configuration which I have mentioned in the question. With all this configuration I am able to enable the ethernet as well as USB interface on the board.
CONFIG_USB_EHCI_HCD_OMAP=y
CONFIG_USB_NET_LAN75XX=y
CONFIG_USB_STORAGE=y
CONFIG_USB_GADGET=y
CONFIG_NOP_USB_XCEIV=y
Now the "ifconfig" command output also shows the ethernet interface.
Related
We have an NDIS LWF driver, and it seems like it cannot get attached to Virtual Network Adapters, for example the one that Kerio Control VPN client creates (Kerio Virtual Network).
When i try to install the NDIS LWF in the network adapter manually by giving it our INF file (Install -> service -> Have disk), the driver doesn't appear in the network service list.
Then i found out that i if add nolower in the FilterMediaTypes in the inf file, it does appear in the network service list, but even then, when i click on OK, it doesn't get added to the list of items and doesn't get attached.
My question is, How can i attach to this Kerio Virtual Network Adapter in order to monitor its packets?
LWFs cannot bind to a network interface that has HKR, Ndi\Interfaces,LowerRange,,nolower in its INF. Generally speaking, the network interface ought to have at least one real LowerRange, and it's reasonable to ask the vendor to add one. For whatever it's worth, we (the Windows OS team) originally shipped the Bluetooth PAN adapter with nolower, and then later realized we needed to update it to have something there, so LWFs could bind to it. Perhaps that anecdote helps motivate this vendor to update their INF.
If the NDIS datapath uses a 14 byte Ethernet-like header and is roughly compatible with Ethernet's ideas of unicast & multicast, then ethernet is the correct thing to put in LowerRange. See the docs for more details.
It's not supported to try and add the nolower token to your LWF driver INF's FilterMediaTypes; you can't reasonably expect to bind to any unknown type of interface. What if the next network adapter indicates packets in some yet-to-be-invented framing layer — how could your LWF possibly make sense of those packets? For that reason, nolower is not a binding interface; it's a special token that means "the empty list".
LWFs also cannot bind to CoNDIS network adapters. This is simply because the LWF programming model has never been extended to cover all the additional signaling for connection management.
I am not personally familiar with the "Kerio" network interface — I don't know if it has nolower in its INF or whether it's CoNDIS (!ndiskd would tell you this). If it's the former, you should ask that vendor to update their INF.
I'm looking to write a simple Windows driver to enable running TCP/IP over a proprietary RF module. The module already provides Ethernet-style data packets with source/destination MAC, so I just need to layer IP packets (generated by the regular Microsoft IPv4 subsystem), set the MTU appropriately so they will be the right size, and then call the module's serial API. I'll need to be able to handle transmit statuses and implement an ARP protocol as well. I want the driver to expose a new interface similar to a wifi or ethernet card in Network Connections and use the normal Windows IP stack.
The module is UART and might be connected via FTDI chip, RS-232 converter, or native UART on an IoT Core board, so it will just be talking to a generic serial port. I am fine with only running on Windows 10, but I'm still not sure what to use. Can I use the UWP VPN provider? Do I need to write an NDIS miniport driver, or an interface provider? Also, how will I handle the driver needing complete control over the serial port at all times? I can't write a serial driver as it might be connected via many different types of serial ports.
Wireshark doesn't show the Ethernet interface after the miniport driver is installed. Wireshark shows "No interfaces found". But Microsoft Message Analyzer and NetMon can locate the adapter interface and show the captured packets.
But if I restart the machine then Wireshark is able to find the interface. I suspect it's due to binding issues between WinPcap and my miniport driver. Please correct me if I'm wrong! Do I need to change the INF file or look at the OID requests part as the NPF filter (used by WinPcap) isn't able to get it's hands on the miniport driver ?
With regards,
Jenson
From what I recall, if network adapters are installed or removed the pcap service needs to be restarted to pick up the changes.
To stop the service, from a command line with Administrator rights:
net stop npf
To start it again:
net start npf
I am modifying a monitor controller for a prototype. It would be convenient to send commands to the prototype using DDC/CI. In Windows, I can't find an obvious way to send a DDC/CI command to a "display dependent device".
The Monitor Configuration API can send virtual control panel commands, but it does not give access to display dependent devices (which would have an I2C address other than 0x6e).
Nicomsoft's WinI2C/DDC product seems to give access to a display dependent device, but it is end-of-life. I would prefer not to build a dependency on an end-of-life product.
NVIDIA's NVAPI has an I2C API, but I would like a solution that also works with Intel and AMD graphics adaptors.
A solution exists for windows which respect XDDM driver display model. Windows 8 and 10 use WDDM.
In XDDM there is a windows O.S. supplied video port driver, and the hardware vendor supplies a miniport driver. When the miniport driver call's the video port driver's edid helper api (VideoPortDDCMonitorHelper), the miniport must supply 4 i2c function pointers as arguments.
In order to utilize these interfaces however you must be acting as the video port driver. So you have to write a video port lower filter driver which just passes along all the interfaces on from the windows supplied video port driver to the miniport driver. Hook the api's and export them to a usermode driver or ioctl which an application can call.
It may be possible to simply mount an instance of the miniport driver and some how get it to call VideoPortDDCMonitorHelper. But with out the help of the actual video port driver it would be difficult to get guidance on how to do that. Also you would have 2 instances of the driver running which may be against the rules for windows.
It does not appear this solution works for windows 8 and 10 because they use a different display driver model which doesn't appear to expose low level control of i2c. It is internal to the miniport driver.
I've been trying to get into QEMU development in order to virtualize a not supported hardware.
I want to develop a new QEMU i2c device (qemu x86), that would get/send data to an application running on the guest. Thing is : I need these data onto the host, as a daemon will send/get the same kind of data to the guest.
My questions are : is it easy to get the data from this device ?
Are there any examples already in QEMU that can fit my needs ?
PS : my i2c device is only a "bridge" between the host and the guest. I need the application to use i2c (can't change that).
Typically, the qemu device will use the "chardev" abstraction to get data from a socket on the host. For example, something like -chardev socket,path=/tmp/foo.sock,server,nowait,id=foo -device myi2c,chardev=foo will connect your i2c device to a socket on the host.
There are many examples of devices that use chardevs in QEMU's hw/char directory. A simple example is digic-uart.c.