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diff --git a/openwrt.page b/openwrt.page new file mode 100644 index 0000000..7d4848d --- /dev/null +++ b/openwrt.page @@ -0,0 +1,304 @@ + +### Recompiling Generic OpenWRT Attitude Adjustment from upstream + +Note: can skip the patching below if you just use +http://github.com/bnewbold/openwrt branch "soekris" and copy rooter.config to +.config. + +Note: GRUB2-based builds from trunk don't seem to work, so make sure the +Attitude Adjustment branch is used and the grub2 build option is not enabled. + +The official OpenWRT build documentation contains a set of host-system package +dependancies (build-essential, etc): + + http://wiki.openwrt.org/doc/howto/buildroot.exigence + http://wiki.openwrt.org/doc/howto/build + +Git clone: + + git://nbd.name/openwrt.git + +In base directory, fetch package feeds: + + ./scripts/feeds update -a + # TODO: maybe this is too much? + ./scripts/feeds install -a + # or, + ./scripts/feeds install -d m build-essential + +Apply the two following patches (unless they have been unstreamed) (patch -p0 < +file.patch): + + https://dev.openwrt.org/ticket/10525 + https://dev.openwrt.org/ticket/12262 + +"make menuconfig", select x86 and net6501 as target, save config, run "make +defconfig" to automatically setup target specific stuff (?). + +"make kernel_menuconfig CONFIG_TARGET=subtarget" and ensure the following is +checked: + + Device Drivers ---> + <*> Serial ATA and Parallel ATA drivers ---> + [*] AHCI SATA support + +ext2 no longer necessary by default... "Use ext4 for ext2/ext3 file systems"? + +## rooter-Specific OpenWRT Build Tweaks + +In menuconfig: + + global build settings + disable binary stripping + advanced + toolchain options + eglibc (not ulibc) + gcc 4.7.0 (not gcc 4.6.x with Linaro enhancements) + target build settings: + root fs archives: tar.gz + root filesystem images: ext4 + 38400 serial port baud rate + don't gzip images + 16 kernel partition size (MB) + 196 root partition size + base system + bridge + libpthread + qos-scripts + wireless-tools + ipv6 + firewall + traceroute6 + ndisc6 + 6rd + 6scripts + ahcpd + ipv6calc-mini + radvd + radvdump + luci + luci, luci-ssl + luci-app-ahcp + luci-app-ddns + luci-app-diag-devinfo + luci-app-qos + luci-app-radvd + luci-app-statistics + kernel + kmod-usb-acm + kmod-usb-net + kmod-usb-storage + all intel wireless, as optional modules + fs-vfat, fs-msdosfs + ralink usb + network + version control + git + subversion client + file transfer + wget + bmon + ifconfig + hostname + mtr + netstat + nisdomainname + netcat + netperf + netstat-nat + ngrep + utilities + vim + gzip + gnupg + e2fsprogs + mkdosfs + resize2fs + tune2fs + fdisk + cfdisk + lsblk + hdparam + bonniexx + development + build-essentials + libraries + libgmp (else gcc compile errors) + +TODO: actually get build-essentials compiling +TODO: mkdosfs download link is dead + +if compiling build-essentials, might need: + + bnewbold@ziggy:~/code/openwrt_trunk$ cat /home/bnewbold/code/openwrt_trunk/toolchain/gcc/patches/4.7.0/209-automake-bullshit.patch + --- a/config/override.m4 + +++ b/config/override.m4 + @@ -29,7 +29,7 @@ + + dnl Ensure exactly this Autoconf version is used + m4_ifndef([_GCC_AUTOCONF_VERSION], + - [m4_define([_GCC_AUTOCONF_VERSION], [2.64])]) + + [m4_define([_GCC_AUTOCONF_VERSION], [2.68])]) + + dnl Test for the exact version when AC_INIT is expanded. + dnl This allows to update the tree in steps (for testing) + +## Install an OpenWRT image (first time) + +Use unetbootin to write a generic linux distro (like debian stable or arch +linux) to a USB stick. Edit the syslinux.cfg file so it looks like: + + default menu.c32 + default arch + menu title UNetbootin + timeout 30 + serial 0 38400 + console 0 + prompt 0 + + label arch + menu label Arch + kernel /ubnkern + append vga=normal initrd=/ubninit ../../ -- quiet console=ttyS0,38400 earlyprint=serial,ttyS0,38400 + +Copy over all the .img files required to the root directory of this device, +then boot up (connect via serial to select boot device). Wait until you get to +either a login or a prompt, then copy over the entire image to the device: + + # dd if=openwrt-x86-net6501-combined-squashfs.img of=/dev/sda bs=1M + +Reboot with all defaults! + +## Misc OpenWRT notes + +To allow remote SSH logins on port 22, add the following custom firewall rule: + + iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT + iptables -A input_wan -p tcp --dport 22 -j ACCEPT + + +To allow all incoming requests to the router, add the following to +/etc/config/firewall: + +config redirect + option src wan + option proto all + option dest_ip 192.168.1.1 + +To do a sysupgrade, use a full combined .img file, eg scp and run: + + sysupgrade openwrt-x86-net6501-combined-squashfs.img + +NOTE: sysupgrade does not seem to work across ulibc/eglibc change? + +## LXC Compilation notes + +Make sure the following packages are installed (if they weren't from above): + + lsblk + perl + file + vim + util > coreutils + admin > debootstrap (has requirements) + block-mount + +Select the "getopt" function in busybox: + + base system > busybox > getopt and support option -l + +Put the lxc and attr packages in ./package, then run: + + ./scripts/feeds install libattr + ./scripts/feeds install libcap + ./scripts/feeds install lxc + +Do menuconfig and select these (in Utilities), and also the bash shell. + +To compile individual packages, try: + + make package/lxc/compile + make package/lxc/install + make package/index + +NOTE: "cgroup namespace support" is not an option in kernel configuration any +more, but shows up as a requirement in lxc-checkconfig. LXC works regardless, +may be some security issues though? See also: +https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/827798 + +Ok, once all the above is compiled and loaded up, ready to configure the +OpenWRT host. + +Create /cgroups directory and a mount point like /data. + +Edit /etc/conf/fstab: + + config 'mount' + option 'target' '/data' + option 'device' '/dev/sda3' + option 'fstype' 'ext4' + option 'options' 'rw,sync' + option 'enabled' '1' + option 'enabled_fsck' '1' + config 'mount' + option 'target' '/cgroup' + option 'device' 'cgroup' + option 'fstype' 'cgroup' + option 'options' 'none' + option 'enabled' '1' + option 'enabled_fsck' '0' + +Enable block-mount ("/etc/init.d/fstab enable") and start it +("/etc/init.d/fstab start"). + +Copy the devices.tar.gz file to /usr/share/debootstrap/devices.tar.gz. + +Next build a debian rootfs. This is rather slow the first time around. Make +sure /data is mounted, then run the rooter-optimized version of lxc-wheezy: + + mkdir -p /data/wheezy + mkdir -p /data/wheezy/mnt + ./lxc-wheezy -p /data/wheezy + +Edit /data/wheezy/config and add (or edit) two lines: + + lxc.utsname = wheezy + lxc.rootfs.mount = /data/wheezy/mnt + +Try starting lxc-start: + + lxc-start -n wheezy -f /data/wheezy/config + +If you are SSH'd in and get an error about file descriptor fd 7, you may need +to do: + + lxc-start -n wheezy -f /data/wheezy/config 7<&- 8<&- + +Horray! + +## TODOs + +create a set of rooter-x86-net6501 images with: +- set local subnet to 192.168.42.1 +- overlay devices.tar.gz (?) +- default mounted /data and /cgroup (via base-files) +- lxc wheezy init script, start by default + +ttt functionality: +- *.ttt.rooter.is DNS +- openvpn tunnel +- remote ipv4 reverse proxy +- remote netcat ssh proxy/tunnel +- some kind of media sharing +- local hostname DNS + +TODO: remove excess kernel modules for faster/cleaner boot + +NOTE: dd if=openwrt-x86-net6501-rootfs-squashfs.img of=/dev/sda2 bs=1M + +- move ./files content to packages +- clean up and upstream net6501 directions, notes, patches +- clean up and upstream libattr and lxc stuff patches + +TODO: zgrep, IKCONFIG_PROC +TODO: mtr broken? |