2019独角兽企业重金招聘Python工程师标准>>>
声明
- 本文使用的是代码是Nexus5的cm-14.1(要下载cm-14.1代码可参考此文:[日更-2019.3.31]如何下载Nexus5的LineageOS14.1(cm-14.1)系统源码并编译、刷机),实现通过USB连接以太网;
- 代码实现在这里:cm-14.1 源码添加以太网功能前后对比
- 虽然Nexus5 是一部手机,根本不用实现其通过usb连接以太网的这种需求,本文的目的只在于指导,不要较真哦;
- Nexus5 这个设备通了其实平板之类的设备也是这个道理;
1 USB-以太网 驱动的支持
1.1 USB-以太网 驱动在源码中的位置
以我的源码目录为例,其在源码中的位置为:
maxingrong@soc02:~/LineageOS/kernel/lge/hammerhead/drivers/net/usb$ ls
asix.c cdc_ether.c cdc_subset.c gl620a.c ipheth.c Kconfig mcs7830.c pegasus.h rmnet_usb_ctrl.c rndis_host.c smsc75xx.c smsc95xx.h
catc.c cdc_ncm.c cx82310_eth.c hso.c kalmia.c lg-vl600.c net1080.c plusb.c rmnet_usb_data.c rtl8150.c smsc75xx.h usbnet.c
cdc_eem.c cdc-phonet.c dm9601.c int51x1.c kaweth.c Makefile pegasus.c qmi_wwan.c rmnet_usb.h sierra_net.c smsc95xx.c zaurus.c
来看下它的Kconfg文件:
#
# USB Network devices configuration
#
comment "Networking support is needed for USB Network Adapter support"
depends on USB && !NET
menu "USB Network Adapters"
depends on USB && NET
config USB_CATC
tristate "USB CATC NetMate-based Ethernet device support (EXPERIMENTAL)"
depends on EXPERIMENTAL
select CRC32
---help---
Say Y if you want to use one of the following 10Mbps USB Ethernet
device based on the EL1210A chip. Supported devices are:
Belkin F5U011
Belkin F5U111
CATC NetMate
CATC NetMate II
smartBridges smartNIC
This driver makes the adapter appear as a normal Ethernet interface,
typically on eth0, if it is the only ethernet device, or perhaps on
eth1, if you have a PCI or ISA ethernet card installed.
To compile this driver as a module, choose M here: the
module will be called catc.
config USB_KAWETH
tristate "USB KLSI KL5USB101-based ethernet device support"
---help---
Say Y here if you want to use one of the following 10Mbps only
USB Ethernet adapters based on the KLSI KL5KUSB101B chipset:
3Com 3C19250
ADS USB-10BT
ATEN USB Ethernet
ASANTE USB To Ethernet Adapter
AOX Endpoints USB Ethernet
Correga K.K.
D-Link DSB-650C and DU-E10
Entrega / Portgear E45
I-O DATA USB-ET/T
Jaton USB Ethernet Device Adapter
Kingston Technology USB Ethernet Adapter
Linksys USB10T
Mobility USB-Ethernet Adapter
NetGear EA-101
Peracom Enet and Enet2
Portsmith Express Ethernet Adapter
Shark Pocket Adapter
SMC 2202USB
Sony Vaio port extender
This driver is likely to work with most 10Mbps only USB Ethernet
adapters, including some "no brand" devices. It does NOT work on
SmartBridges smartNIC or on Belkin F5U111 devices - you should use
the CATC NetMate driver for those. If you are not sure which one
you need, select both, and the correct one should be selected for
you.
This driver makes the adapter appear as a normal Ethernet interface,
typically on eth0, if it is the only ethernet device, or perhaps on
eth1, if you have a PCI or ISA ethernet card installed.
To compile this driver as a module, choose M here: the
module will be called kaweth.
config USB_PEGASUS
tristate "USB Pegasus/Pegasus-II based ethernet device support"
select NET_CORE
select MII
---help---
Say Y here if you know you have Pegasus or Pegasus-II based adapter.
If in doubt then look at for the
complete list of supported devices.
If your particular adapter is not in the list and you are _sure_ it
is Pegasus or Pegasus II based then send me
vendor and device IDs.
To compile this driver as a module, choose M here: the
module will be called pegasus.
config USB_RTL8150
tristate "USB RTL8150 based ethernet device support (EXPERIMENTAL)"
depends on EXPERIMENTAL
select NET_CORE
select MII
help
Say Y here if you have RTL8150 based usb-ethernet adapter.
Send me any comments you may have.
You can also check for updates at .
To compile this driver as a module, choose M here: the
module will be called rtl8150.
config USB_USBNET
tristate "Multi-purpose USB Networking Framework"
select NET_CORE
select MII
---help---
This driver supports several kinds of network links over USB,
with "minidrivers" built around a common network driver core
that supports deep queues for efficient transfers. (This gives
better performance with small packets and at high speeds).
The USB host runs "usbnet", and the other end of the link might be:
- Another USB host, when using USB "network" or "data transfer"
cables. These are often used to network laptops to PCs, like
"Laplink" parallel cables or some motherboards. These rely
on specialized chips from many suppliers.
- An intelligent USB gadget, perhaps embedding a Linux system.
These include PDAs running Linux (iPaq, Yopy, Zaurus, and
others), and devices that interoperate using the standard
CDC-Ethernet specification (including many cable modems).
- Network adapter hardware (like those for 10/100 Ethernet) which
uses this driver framework.
The link will appear with a name like "usb0", when the link is
a two-node link, or "eth0" for most CDC-Ethernet devices. Those
two-node links are most easily managed with Ethernet Bridging
(CONFIG_BRIDGE) instead of routing.
For more information see .
To compile this driver as a module, choose M here: the
module will be called usbnet.
config USB_NET_AX8817X
tristate "ASIX AX88xxx Based USB 2.0 Ethernet Adapters"
depends on USB_USBNET
select CRC32
default y
help
This option adds support for ASIX AX88xxx based USB 2.0
10/100 Ethernet adapters.
This driver should work with at least the following devices:
* Aten UC210T
* ASIX AX88172
* Billionton Systems, USB2AR
* Buffalo LUA-U2-KTX
* Corega FEther USB2-TX
* D-Link DUB-E100
* Hawking UF200
* Linksys USB200M
* Netgear FA120
* Sitecom LN-029
* Intellinet USB 2.0 Ethernet
* ST Lab USB 2.0 Ethernet
* TrendNet TU2-ET100
This driver creates an interface named "ethX", where X depends on
what other networking devices you have in use.
config USB_NET_CDCETHER
tristate "CDC Ethernet support (smart devices such as cable modems)"
depends on USB_USBNET
default y
help
This option supports devices conforming to the Communication Device
Class (CDC) Ethernet Control Model, a specification that's easy to
implement in device firmware. The CDC specifications are available
from .
CDC Ethernet is an implementation option for DOCSIS cable modems
that support USB connectivity, used for non-Microsoft USB hosts.
The Linux-USB CDC Ethernet Gadget driver is an open implementation.
This driver should work with at least the following devices:
* Dell Wireless 5530 HSPA
* Ericsson PipeRider (all variants)
* Ericsson Mobile Broadband Module (all variants)
* Motorola (DM100 and SB4100)
* Broadcom Cable Modem (reference design)
* Toshiba (PCX1100U and F3507g/F3607gw)
* ...
This driver creates an interface named "ethX", where X depends on
what other networking devices you have in use. However, if the
IEEE 802 "local assignment" bit is set in the address, a "usbX"
name is used instead.
config USB_NET_CDC_EEM
tristate "CDC EEM support"
depends on USB_USBNET && EXPERIMENTAL
help
This option supports devices conforming to the Communication Device
Class (CDC) Ethernet Emulation Model, a specification that's easy to
implement in device firmware. The CDC EEM specifications are available
from .
This driver creates an interface named "ethX", where X depends on
what other networking devices you have in use. However, if the
IEEE 802 "local assignment" bit is set in the address, a "usbX"
name is used instead.
config USB_NET_CDC_NCM
tristate "CDC NCM support"
depends on USB_USBNET
default y
help
This driver provides support for CDC NCM (Network Control Model
Device USB Class Specification). The CDC NCM specification is
available from .
Say "y" to link the driver statically, or "m" to build a
dynamically linked module.
This driver should work with at least the following devices:
* ST-Ericsson M700 LTE FDD/TDD Mobile Broadband Modem (ref. design)
* ST-Ericsson M5730 HSPA+ Mobile Broadband Modem (reference design)
* ST-Ericsson M570 HSPA+ Mobile Broadband Modem (reference design)
* ST-Ericsson M343 HSPA Mobile Broadband Modem (reference design)
* Ericsson F5521gw Mobile Broadband Module
config USB_NET_DM9601
tristate "Davicom DM9601 based USB 1.1 10/100 ethernet devices"
depends on USB_USBNET
select CRC32
help
This option adds support for Davicom DM9601 based USB 1.1
10/100 Ethernet adapters.
config USB_NET_SMSC75XX
tristate "SMSC LAN75XX based USB 2.0 gigabit ethernet devices"
depends on USB_USBNET
select CRC32
help
This option adds support for SMSC LAN95XX based USB 2.0
Gigabit Ethernet adapters.
config USB_NET_SMSC95XX
tristate "SMSC LAN95XX based USB 2.0 10/100 ethernet devices"
depends on USB_USBNET
select CRC32
help
This option adds support for SMSC LAN95XX based USB 2.0
10/100 Ethernet adapters.
config USB_NET_GL620A
tristate "GeneSys GL620USB-A based cables"
depends on USB_USBNET
help
Choose this option if you're using a host-to-host cable,
or PC2PC motherboard, with this chip.
Note that the half-duplex "GL620USB" is not supported.
config USB_NET_NET1080
tristate "NetChip 1080 based cables (Laplink, ...)"
default y
depends on USB_USBNET
help
Choose this option if you're using a host-to-host cable based
on this design: one NetChip 1080 chip and supporting logic,
optionally with LEDs that indicate traffic
config USB_NET_PLUSB
tristate "Prolific PL-2301/2302/25A1 based cables"
# if the handshake/init/reset problems, from original 'plusb',
# are ever resolved ... then remove "experimental"
depends on USB_USBNET && EXPERIMENTAL
help
Choose this option if you're using a host-to-host cable
with one of these chips.
config USB_NET_MCS7830
tristate "MosChip MCS7830 based Ethernet adapters"
depends on USB_USBNET
help
Choose this option if you're using a 10/100 Ethernet USB2
adapter based on the MosChip 7830 controller. This includes
adapters marketed under the DeLOCK brand.
config USB_NET_RNDIS_HOST
tristate "Host for RNDIS and ActiveSync devices (EXPERIMENTAL)"
depends on USB_USBNET && EXPERIMENTAL
select USB_NET_CDCETHER
help
This option enables hosting "Remote NDIS" USB networking links,
as encouraged by Microsoft (instead of CDC Ethernet!) for use in
various devices that may only support this protocol. A variant
of this protocol (with even less public documentation) seems to
be at the root of Microsoft's "ActiveSync" too.
Avoid using this protocol unless you have no better options.
The protocol specification is incomplete, and is controlled by
(and for) Microsoft; it isn't an "Open" ecosystem or market.
config USB_NET_CDC_SUBSET
tristate "Simple USB Network Links (CDC Ethernet subset)"
depends on USB_USBNET
default y
help
This driver module supports USB network devices that can work
without any device-specific information. Select it if you have
one of these drivers.
Note that while many USB host-to-host cables can work in this mode,
that may mean not being able to talk to Win32 systems or more
commonly not being able to handle certain events (like replugging
the host on the other end) very well. Also, these devices will
not generally have permanently assigned Ethernet addresses.
config USB_ALI_M5632
boolean "ALi M5632 based 'USB 2.0 Data Link' cables"
depends on USB_NET_CDC_SUBSET
help
Choose this option if you're using a host-to-host cable
based on this design, which supports USB 2.0 high speed.
config USB_AN2720
boolean "AnchorChips 2720 based cables (Xircom PGUNET, ...)"
depends on USB_NET_CDC_SUBSET
help
Choose this option if you're using a host-to-host cable
based on this design. Note that AnchorChips is now a
Cypress brand.
config USB_BELKIN
boolean "eTEK based host-to-host cables (Advance, Belkin, ...)"
depends on USB_NET_CDC_SUBSET
default y
help
Choose this option if you're using a host-to-host cable
based on this design: two NetChip 2890 chips and an Atmel
microcontroller, with LEDs that indicate traffic.
config USB_ARMLINUX
boolean "Embedded ARM Linux links (iPaq, ...)"
depends on USB_NET_CDC_SUBSET
default y
help
Choose this option to support the "usb-eth" networking driver
used by most of the ARM Linux community with device controllers
such as the SA-11x0 and PXA-25x UDCs, or the tftp capabilities
in some PXA versions of the "blob" boot loader.
Linux-based "Gumstix" PXA-25x based systems use this protocol
to talk with other Linux systems.
Although the ROMs shipped with Sharp Zaurus products use a
different link level framing protocol, you can have them use
this simpler protocol by installing a different kernel.
config USB_EPSON2888
boolean "Epson 2888 based firmware (DEVELOPMENT)"
depends on USB_NET_CDC_SUBSET
help
Choose this option to support the usb networking links used
by some sample firmware from Epson.
config USB_KC2190
boolean "KT Technology KC2190 based cables (InstaNet)"
depends on USB_NET_CDC_SUBSET && EXPERIMENTAL
help
Choose this option if you're using a host-to-host cable
with one of these chips.
config USB_NET_ZAURUS
tristate "Sharp Zaurus (stock ROMs) and compatible"
depends on USB_USBNET
select USB_NET_CDCETHER
select CRC32
default y
help
Choose this option to support the usb networking links used by
Zaurus models like the SL-5000D, SL-5500, SL-5600, A-300, B-500.
This also supports some related device firmware, as used in some
PDAs from Olympus and some cell phones from Motorola.
If you install an alternate image, such as the Linux 2.6 based
versions of OpenZaurus, you should no longer need to support this
protocol. Only the "eth-fd" or "net_fd" drivers in these devices
really need this non-conformant variant of CDC Ethernet (or in
some cases CDC MDLM) protocol, not "g_ether".
config USB_NET_CX82310_ETH
tristate "Conexant CX82310 USB ethernet port"
depends on USB_USBNET
help
Choose this option if you're using a Conexant CX82310-based ADSL
router with USB ethernet port. This driver is for routers only,
it will not work with ADSL modems (use cxacru driver instead).
config USB_NET_KALMIA
tristate "Samsung Kalmia based LTE USB modem"
depends on USB_USBNET
help
Choose this option if you have a Samsung Kalmia based USB modem
as Samsung GT-B3730.
To compile this driver as a module, choose M here: the
module will be called kalmia.
config USB_NET_QMI_WWAN
tristate "QMI WWAN driver for Qualcomm MSM based 3G and LTE modems"
depends on USB_USBNET
select USB_WDM
help
Support WWAN LTE/3G devices based on Qualcomm Mobile Data Modem
(MDM) chipsets. Examples of such devices are
* Huawei E392/E398
This driver will only drive the ethernet part of the chips.
The devices require additional configuration to be usable.
Multiple management interfaces with linux drivers are
available:
* option: AT commands on /dev/ttyUSBx
* cdc-wdm: Qualcomm MSM Interface (QMI) protocol on /dev/cdc-wdmx
A modem manager with support for QMI is recommended.
To compile this driver as a module, choose M here: the
module will be called qmi_wwan.
config USB_HSO
tristate "Option USB High Speed Mobile Devices"
depends on USB && RFKILL
default n
help
Choose this option if you have an Option HSDPA/HSUPA card.
These cards support downlink speeds of 7.2Mbps or greater.
To compile this driver as a module, choose M here: the
module will be called hso.
config USB_NET_INT51X1
tristate "Intellon PLC based usb adapter"
depends on USB_USBNET
help
Choose this option if you're using a 14Mb USB-based PLC
(Powerline Communications) solution with an Intellon
INT51x1/INT5200 chip, like the "devolo dLan duo".
config USB_CDC_PHONET
tristate "CDC Phonet support"
depends on PHONET
help
Choose this option to support the Phonet interface to a Nokia
cellular modem, as found on most Nokia handsets with the
"PC suite" USB profile.
config USB_IPHETH
tristate "Apple iPhone USB Ethernet driver"
default n
---help---
Module used to share Internet connection (tethering) from your
iPhone (Original, 3G and 3GS) to your system.
Note that you need userspace libraries and programs that are needed
to pair your device with your system and that understand the iPhone
protocol.
For more information: http://giagio.com/wiki/moin.cgi/iPhoneEthernetDriver
config USB_SIERRA_NET
tristate "USB-to-WWAN Driver for Sierra Wireless modems"
depends on USB_USBNET
help
Choose this option if you have a Sierra Wireless USB-to-WWAN device.
To compile this driver as a module, choose M here: the
module will be called sierra_net.
config USB_VL600
tristate "LG VL600 modem dongle"
depends on USB_NET_CDCETHER
select USB_ACM
help
Select this if you want to use an LG Electronics 4G/LTE usb modem
called VL600. This driver only handles the ethernet
interface exposed by the modem firmware. To establish a connection
you will first need a userspace program that sends the right
command to the modem through its CDC ACM port, and most
likely also a DHCP client. See this thread about using the
4G modem from Verizon:
http://ubuntuforums.org/showpost.php?p=10589647&postcount=17
config MSM_RMNET_USB
tristate "RMNET USB Driver"
depends on USB_USBNET
help
Select this if you have a Qualcomm modem device connected via USB
supporting RMNET network interface.
To compile this driver as a module, choose M here: the module
will be called rmnet_usb. If unsure, choose N.
endmenu
这些这些都是要加入到内核配置项中的。
1.2 在内核编译配置文件中查看是否内核编译时加入了这些模块
查看Nexus5内核配置文件:
maxingrong@soc02:~/LineageOS/kernel/lge/hammerhead/arch/arm/configs$ vim hammerhead_defconfig
发现hammerhead_defconfig中这些模块被加入进了配置项中:
CONFIG_USB_CATC=y
CONFIG_USB_KAWETH=y
CONFIG_USB_PEGASUS=y
CONFIG_USB_RTL8150=y
CONFIG_USB_USBNET=y
CONFIG_USB_NET_CDC_EEM=y
CONFIG_USB_NET_DM9601=y
CONFIG_USB_NET_SMSC75XX=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_NET_GL620A=y
CONFIG_USB_NET_PLUSB=y
CONFIG_USB_NET_MCS7830=y
CONFIG_USB_NET_RNDIS_HOST=y
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_CX82310_ETH=y
CONFIG_USB_NET_KALMIA=y
CONFIG_USB_NET_QMI_WWAN=y
CONFIG_USB_HSO=y
CONFIG_USB_NET_INT51X1=y
CONFIG_USB_IPHETH=y
CONFIG_USB_SIERRA_NET=y
此时,不必担心内核中没有驱动支持了。 其实有个快捷的方法知道当前驱动支持还是不支持,那就是看一下开发者模式中USB功能选项中有没有RNDIS(USB以太网功能),如下图:
有的话就说明驱动已经支持了!!
2 接下来根据我的old/new对比,添加至源码中
我的码云仓库:cm-14.1 源码添加前后对比
3 验证结果
- 刷机后进入Setting中,发现增加了以太网设置项:
- 在开发者选项网络部分,将USB模式选择为RNDIS模式:
- 利用RJ45转usb的hub测试一下就ok了!