Ethernet driver for mcc/rpmsg status

mccethernet is loading on Ubuntu 15.10.:

ifconfig
eth0      Link encap:Ethernet  HWaddr 00:21:70:5a:c0:7d  
          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:65536  Metric:1
          RX packets:722 errors:0 dropped:0 overruns:0 frame:0
          TX packets:722 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:88472 (88.4 KB)  TX bytes:88472 (88.4 KB)

mcc0      Link encap:Ethernet  HWaddr 00:00:00:00:00:01  
          UP BROADCAST RUNNING MULTICAST  MTU:1024  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:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan0     Link encap:Ethernet  HWaddr 00:c0:a8:c3:56:15  
          inet addr:192.168.9.6  Bcast:192.168.9.255  Mask:255.255.255.0
          inet6 addr: fe80::2c0:a8ff:fec3:5615/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8630 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7939 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4416731 (4.4 MB)  TX bytes:1681525 (1.6 MB)

Background on driver development for mccethernet, mccmulti, and mcctty:

I start by creating a basic driver that can be loaded by my desktop PC, which is running 15.10 Ubuntu.  This way I can load/debug/ etc faster then recompiling the kernel or loading the Udoo Neo.  Also, the Ubuntu is using 4.x and neo is using a 3.4.x and there are some API differences that have to be accounted for in the mccethernet.c 

For example: in 3.4.x alloc_netdev only needs 3 arguments where alloc_netdev in 4.x needs 4 arguments. 

Linux kernel has some macros to help you out:

    

#if LINUX_VERSION_CODE < KERNEL_VERSION(4,0,0)        

mccethernet_dev = alloc_netdev(sizeof(struct mcc_ethernet_device), "mcc0", mcc_setup);

#else

mccethernet_dev = alloc_netdev(sizeof(struct mcc_ethernet_device), "mcc0", NET_NAME_UNKNOWN, mcc_setup);

#endif 

mccmulti driver was a little harder to since it is using MCC api calls; the first pass was to stub MCC calls.

For the mccethernet it is using basic file operations on m4mcc1 on the mccmulti user interface.  Code can be found here.