the kernel of jslinux-network, in fact, there is an e1000 network card more than the kernel of fabrice bellard. The netlink socket for communication between
the kernel and the user space is available. The
test is that the
ip link is available. The
key point is make ARCH=i386 drivers/net/e1000 /
Last/Cannot be less
Test environment 32-bit centos7:
[root@centos32 linux-2.6.20]# uname -a Linux centos32 3.10.0-327.18.2.el7.i686 #1 SMP Fri May 13 02:29:38 UTC 2016 i686 i686 i386 GNU/Linux [root@centos32 linux-2.6.20]# cat /etc/redhat-release CentOS Linux release 7.2.1511 (AltArch) [root@centos32 linux-2.6.20]# make -v GNU Make 3.82 Built for i386-redhat-linux-gnu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. [root@centos32 linux-2.6.20]# gcc --version gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-4) Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [root@centos32 linux-2.6.20]
If buildroot-2016.08.1.tar.gz
is an ordinary fabric kernel
2.6.20 + buildroot
/ # ip link
Cannot open netlink socket: Invalid argument
bzImage4.0.3 +buildroot
3 devices, lo, eth0, sit0@NONE
this kernel It is relatively large, and the compilation method is given later. It is
judged that the problem of the kernel causes the netlink socket error
. I have searched the .config kernel options, but there is no network driver related.
In fact, network card is not in the .config because there are too many related issues. 2.6.20
make ARCH=i386 drivers/net/e1000/
Generate built-in.o in the network card directory
and then compile the kernel
time make ARCH=i386 -j16
Refer to "LINUX+2.6 Kernel Standard Tutorial"
for the steps to generate the kernel 1. When the kernel is compiled, all buildins will be compiled into the kernel according to arch/i386/kernel/vmLinux.lds to generate uncompressed src/vmLinux, and the link offset address 0xc0000000 (The e1000 network card is also compiled in here) 2. objcopy generates /arch/i386/boot/compressd/vmlinux.bin gzip generates vmlinux.bin.gz) ld generates piggy.o according to the connection script vmlinux.scr 3.misc .o decompressed c code head.o assemble set parameters and stack for decompression and piggy.o ld generate arch/i386/boot/compressed/vmLinux 4.objcopy generate arch/i386/boot/vmLinux.bin 5. use build Generate bootsect (512 bytes), setup (512 bytes), and vmLinux.bin to generate bzImage. With bzImage, we can start vm with qemu
qemu-system-i386 -kernel /opt/jslinux/kernel/linux-2.6.20/arch/i386/boot/bzImage -drive file=hda.img.lspci,if=ide,cache=none -append "console=ttyS0 root=/dev/hda rw rdinit=/sbin/init notsc=1" -boot order=dc,menu=on -net nic,vlan=0,macaddr=52:54:00:12:34:22,model=e1000,addr=08 -net tap,ifname=tap1,script=./if-up,downscript=./if-down -nographic
The ip link does not report an error.
Although qemu still cannot access the external network, this kernel can be used for jslinux-network. The
specific steps are as follows
★★★★
Compile the kernel:
linux-2.6.20.tar.gz
ls
linux-2.6.20 tmp/linuxstart-20120111
cp tmp/linuxstart-20120111/config_linux-2.6.20 linux-2.6.20/.config vim linux-2.6.20/.config CONFIG_TUN=y
Add tun support for
cd linux-2.6.20
patch -p1 < ../tmp/linuxstart-20120111/patch_linux-2.6.20 patching file drivers/char/Kconfig patching file drivers/char/Makefile patching file drivers/char/jsclipboard.c patching file drivers/serial/8250.c patching file drivers/ide/ide-probe.c patch -p1 < /var/www/jslinux_reversed/contrib/patches/2.6.20_common_fixes.patch patching file arch/i386/kernel/Makefile patching file kernel/mutex.c patching file scripts/mod/sumversion.c [root@centos32 linux-2.6.20]#
The code is at
https://github.com/killinux/jslinux_reversed
https://github.com/killinux/jslinux-network
In order to adapt to the native
gcc version 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC)
vim Makefile
search /config %config
config %config: scripts_basic outputmakefile FORCE change to %config: scripts_basic outputmakefile FORCE
search/\/ %\/
/ %/: prepare scripts FORCE change to %/: prepare scripts FORCE
Most important here
make ARCH=i386 drivers/net/e1000/
vim .config
to confirm whether CONFIG_TUN=y is still there,
if so, execute
time make ARCH=i386 -j16
Generate linux-2.6.20/arch/i386/boot/bzImage
cd ../tmp/linuxstart-20120111/
Generate
vim Makefile available for jslinux
Specify the kernel path just now
Modify KERNEL_PATH=../../linux-2.6.20
make kernel generates vmlinux26.bin
cp vmlinux2.6.bin /var/www/jslinux-network/
vim jslinux-network/jslinux.js
if (!kernel_name)
//kernel_name = "vmlinux-2.6.20.bin";
kernel_name = "vmlinux26.bin";
Start the server process of websocket and establish the tap channel
jslinux-network/websocketstuntap/launch.sh
to enter jslinux-network
cat /dev/clipboard|sh
Establish tap0
to start connect or reconnect websockets on the web page.
ping 10.0.2.2
or above is the kernel compilation and replacement is successful.
Next, hard disk file
########################## ##########Also ############
If you want a kernel with lo, eth0, sit0,
put
http://dl2.iteye.com/upload/attachment /0121/2645/d7cb6c0e-5039-30d7-a08a-49019f17d18c.jpeg
is saved as .config to compile the kernel of linux-4.0.3 and get bzImage. The download address of the
kernel is
https://www.kernel.org/pub/linux/ kernel/v2.6/
test
qemu-system-i386 -kernel bzImage -drive file=root.bin,if=ide,cache=none -append "console=ttyS0 root=/dev/sda rw rdinit=/sbin/init notsc=1" -boot order=dc,menu=on -net nic,vlan=0,macaddr=52:54:00:12:34:22,model=e1000,addr=08 -net tap,ifname=tap1,script=./if-up,downscript=./if-down -nographic
enter vm test
ifconfig eth0 192.168.122.3 netmask 255.255.255.0 route add default gw 192.168.122.1 echo "nameserver 114.114.114.114" >/etc/resolv.conf ping www.baidu.com
in
[root@centos32 kvm]# cat if-up #!/bin/sh ip link set tap1 up #brctl addif br0 tap1 brctl addif virbr0 tap1