Difference between revisions of "USB to Ethernet adapter"
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How-to use USB to Ethernet adapters | How-to use USB to Ethernet adapters | ||
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[ +0,000001] usb 1-3.1.4: SerialNumber: 00000A | [ +0,000001] usb 1-3.1.4: SerialNumber: 00000A | ||
</pre> | </pre> | ||
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==== Kernel configuration ==== | ==== Kernel configuration ==== | ||
The driver is included in linux menuconfig. | The driver is included in linux menuconfig. | ||
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==== Usage ==== | ==== Usage ==== | ||
| − | Usage are the same | + | Usage are the same as SMSC described below, except that: |
* interface is named ethx (If you already mount the base ethernet, this adapter will be named eth1). | * interface is named ethx (If you already mount the base ethernet, this adapter will be named eth1). | ||
* The Linux configuration given here avoid modprobe. | * The Linux configuration given here avoid modprobe. | ||
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</pre> | </pre> | ||
Additional informations concerning the EEPROM containt can be found on the SMSC web site. | Additional informations concerning the EEPROM containt can be found on the SMSC web site. | ||
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Latest revision as of 09:49, 30 April 2020
How-to use USB to Ethernet adapters
Contents
Prerequesities
Tested hardware
LAN JP208 (ASIX AX88772C)
LAN JP208 is a noname USB2 to Ethernet controller adapter.
On host x86 computer, this converter is identified as an ASIX 8877 chip :
[ +0,112941] usb 1-3.1.4: New USB device found, idVendor=0b95, idProduct=772b [ +0,000003] usb 1-3.1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ +0,000002] usb 1-3.1.4: Product: AX88772C [ +0,000002] usb 1-3.1.4: Manufacturer: ASIX Elec. Corp. [ +0,000001] usb 1-3.1.4: SerialNumber: 00000A
Kernel configuration
The driver is included in linux menuconfig.
$ make linux-menuconfig
Device Drivers --->
[*] Network device support --->
USB Network Adapters --->
[...]
<*> Multi-purpose USB Networking Framework
<*> ASIX AX88xxx Based USB 2.0 Ethernet Adapters
[...]
Usage
Usage are the same as SMSC described below, except that:
- interface is named ethx (If you already mount the base ethernet, this adapter will be named eth1).
- The Linux configuration given here avoid modprobe.
SMSC LAN9500
The SMSC LAN9500 is a Hi-Speed USB 2.0 to 10/100 Ethernet Controller. The datasheet can be found here: http://www.smsc.com/media/Downloads_Public/Data_Sheets/9500.pdf. An external EEPROM is used to store the LAN9500 configuration.
Kernel configuration
$ make linux-menuconfig
Device Drivers --->
[*] Network device support --->
USB Network Adapters --->
[...]
<M> Multi-purpose USB Networking Framework
[...]
<M> CDC Ethernet support
[...]
<M> SMSC LAN95XX based USB 2.0 10/100 ethernet devices
Additional tools
In order to read/write the configuration eeprom of the LAN9500, Ethtool has to be used.
$ make menuconfig
Target packages --->
Networking applications --->
[*] ethtool
[*] enable pretty printing
Usage
First mount the module:
# modprobe smsc95xx
then start the new ethernet port
# ifconfig usb0 192.168.10.208 up
If the message "No EEPROM present" is displayed, this indicates that no configuration file has been detected in the EEPROM. The LAN9500 will start in a default mode and the MAC address will be randomly generated by Linux. The EEPROM can be read/write by using ethtool once the module loaded
ethtool -e usb0 # (eeprom read) ethtool -E usb0 magic 0x9500 offset xxx value xxx # (eeprom write value at offset)
Additional informations concerning the EEPROM containt can be found on the SMSC web site.
