Linux vanilla kernel on QEMU and networking with eth0 -


i have downloaded , compiled vanilla linux kernel (3.7.1) used busybox ramdisk booted using qemu. qemu command line

qemu-system-i386 -kernel bzimage -initrd ramdisk.img -append "root=/dev/ram rw console=ttys0 rdinit=/bin/ash" -nographic -net nic -net user

everything goes well. however, can't use networking on vanilla kernel busybox.

'ifup eth0' tells me 

/ # ifup eth0 ip: siocgifflags: no such device

i googled internet can' clue... advice nice thank in advance.

most there no driver (in example should e1000) loaded or device has name.

in /sys/class/net/ should find listing of available net-devices. if there none (besides lo) driver not loaded.

in qemu monitor type "info pci" , show pci-address of ethernet card. should this:

... bus  0, device   3, function 0:   ethernet controller: pci device 8086:100e ...

this device corresponds /sys/devices/pci0000:00/0000:00:03.0/. files "vendor" , "device" must contain "0x8086" , "0x100e" pci-id above , kernel determines driver load.

try load manually "modprobe e1000" or insmod. if loaded there must symlink named "driver". if not "dmesg" should give reason why not.


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