[vc_row][vc_column][vc_column_text]pcDuino3 can be used as the platform for software defined network research and development work. In this post, we show how to add more Ethernet ports to pcDuino3 by using the network USB adapter.

We installed three network USB adapters to pcDuino3 through a USB hub.

[/vc_column_text][vc_tour][vc_tab title=”Build kernel to Support the USB network adapter” tab_id=”1404193377-2-26″][vc_column_text]The USB network adapter is not supported by the pcDuino3 kernel. So we need to build the driver into the kernel.  The detailed steps to build the kernel for pcDuino3 can be found at here.

Plug in the USB network adapter into the USB port, and check the USB network adapter model by:

$lsusb

Bus 001 Device 002: ID 0bda:8179 Realtek Semiconductor Corp.
Bus 004 Device 002: ID 0fe6:9700 Kontron (Industrial Computer Source / ICS Advent) DM9601 Fast Ethernet Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

We found out that the model is DM9601.

Next we need to configure the kernel:

Device Drivers  —>

[*] Network device support  —>

USB Network Adapters  —>

<M>   Davicom DM9601 based USB 1.1 10/100 ethernet devices

We can also select other models so that other models can be used.

After done with the configuration, we proceed to build the kernel. Once its done, we will get two files: pcduino3_a20_hwpack_20140630.tar.xz and pcduino3_a20_kernel_livesuit_20140630.img.pcduino3_a20_kernel_livesuit_20140630.img is the kernel image that we will use to burn the kernel.  Next step is to flash the roofts, which can still use the released version.

[/vc_column_text][/vc_tab][vc_tab title=”Replace Driver” tab_id=”1404193377-1-84″][vc_column_text]After done with the rootfs, reboot pcDuino, and copy pcduino3_a20_hwpack_20140630.tar.xz to the home directory of pcDuino.

Unzip the driver:

$sudo cp rootfs/lib/modules/3.4.79+/ /lib/modules/  -rf

Copy ko files to the driver location:

$sudo cp rootfs/lib/modules/3.4.79+/ /lib/modules/  -rf

With USB Ethernet adapter plug in, we reboot pcDuino3:

$lsmod

root@ubuntu:/home/ubuntu/sample# lsmod
Module                  Size  Used by
sun4i_csi0             23751  0
videobuf_dma_contig     5503  1 sun4i_csi0
videobuf_core          15064  2 sun4i_csi0,videobuf_dma_contig
gc2035                 12186  1
gc0308                 10570  0
g_ether                45227  0
sw_usb_udc             20366  0
udc_core                5289  2 g_ether,sw_usb_udc
rt5370sta             617601  0
dm9601                  7033  0
qf9700                  6539  0
usbnet                 16076  2 dm9601,qf9700
8188eu                475883  0
8192cu                433928  0
mali_drm                2095  1
drm                   156592  2 mali_drm
mali                   91542  0
disp_ump                 691  0
ump                    44094  4 mali,disp_ump

When we have 3 adapters, we will get:

ubuntu@ubuntu:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 02:ca:06:83:13:fb  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:87 Base address:0xa000 

eth1      Link encap:Ethernet  HWaddr 00:e0:4c:53:44:58  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:694 (694.0 B)  TX bytes:694 (694.0 B)

rename7   Link encap:Ethernet  HWaddr 00:e0:4c:53:44:58  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

rename9   Link encap:Ethernet  HWaddr 00:e0:4c:53:44:58  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

usb0      Link encap:Ethernet  HWaddr 00:11:22:33:44:55  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan5     Link encap:Ethernet  HWaddr cc:d2:9b:2f:eb:d4  
          inet addr:192.168.1.15  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::ced2:9bff:fe2f:ebd4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3182 errors:0 dropped:3343 overruns:0 frame:0
          TX packets:1389 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:493743 (493.7 KB)  TX bytes:1634861 (1.6 MB)

We can see that the other 2 USB Ethernet adapters have been displayed as rename7 and rename 8.

ubuntu@ubuntu:~$ leafpad /etc/udev/rules.d/70-persistent-net.rules[/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]