Allen's memo: 10月 2012

星期日, 10月 21, 2012

Pandaboard mldonkey server

1. the original mldonkey with precise has bug.
https://bugs.launchpad.net/ubuntu/+source/mldonkey/+bug/1060007

2. try to build for my own.
- get mldonkey-3.1.3.tar.bz2 from official site
- extract & get build depend package
apt-get install build-essential checkinstall ocaml-nox ocaml-native-compilers zlib1g-dev
- change CXXFLAGS -O2 to -Os
- ./configure --disable-multinet
- make -j2
- copy ./mlnet to /usr/bin/mlnet (to replace the old one)

3. regarding the password for remote user.
- telnet 127.0.0.1 4000
- useradd admin xxxx (xxxx is password you want)

Ref: https://help.ubuntu.com/community/MLDonkey
http://mldonkey.sourceforge.net/Quickstart_guide
http://mldonkey.sourceforge.net/CompilationProblems

Pandaboard - fix smsc95xx 1-1.1:1.0: eth0: kevent 2 may have been dropped

1. add smsc95xx.turbo_mode=N in /boot/boot.script

2. /etc/sysctl.conf
- vm.min_free_kbytes = ~~16384~~ 32768
- vm.vfs_cache_pressure = ~~200~~ 300

3. update systcl

- sudo sysctl -p

lsmod result in Ubuntu precise on Pandaboard

ppp_deflate 4867 0
zlib_deflate 21306 1 ppp_deflate
bsd_comp 5569 0
ppp_async 7602 1
crc_ccitt 1628 1 ppp_async
xt_tcpudp 2573 29
xt_state 1384 1
iptable_filter 1733 1
ipt_MASQUERADE 1954 1
iptable_nat 4528 1
nf_nat 19315 2 ipt_MASQUERADE,iptable_nat
nf_conntrack_ipv4 14233 4 iptable_nat,nf_nat
nf_conntrack 85255 5 xt_state,ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv4
nf_defrag_ipv4 1594 1 nf_conntrack_ipv4
ip_tables 13212 2 iptable_filter,iptable_nat
x_tables 19387 6 xt_tcpudp,xt_state,iptable_filter,ipt_MASQUERADE,iptable_nat,ip_tables
dm_crypt 18016 0
wl12xx 174783 0
mac80211 490889 1 wl12xx
cfg80211 203992 2 wl12xx,mac80211
wl12xx_sdio 3829 0
compat 3663 4 wl12xx,mac80211,cfg80211,wl12xx_sdio
gpio_keys 9031 0
leds_gpio 3788 0

Pandaboard disable ondemand cpu governor

1. sudo update-rc.d ondemand disable

2. modify rc.local
# By default this script does nothing.
#set scaling_governor to userspace
echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo userspace > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
# set cpufreq to 800Mhz
echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
echo 800000 > /sys/devices/system/cpu/cpu1/cpufreq/scaling_setspeed

Android keylayout support

1. kernel add gpio key support
2. choose the right .kl & .kcm
it should be the same with the gpio key driver name(ex: gpio-keys.xx)

Openbravo POS note in Lucid (ARMv7)

RXTX could use the repo's package

but, RXTXComm.jar need to be put in /usr/lib/jvm/java-6-openjdk/jre/lib/ext

librxtxParallel.so, librxtxSerial.so need to be put in /usr/lib/jvm/java-6-openjdk/jre/lib/arm

Use TestSerialPort to do the test.
1. javac *.java
2. java ListCommPorts (check result)

Ubuntu ttySx default only root & dialout have permission to use.
so, the openbravo user need to join dialout group.

for autologon & auto-launch openbravo-pos
/etc/lxdm/lxdm.conf need to be modified
[base]
autologin=opos
session=/opt/openbravopos-2.30/start.sh

Pandaboard Ubuntu 12.04 precise note

My goal is make an device that be my wireless access point, transmission daemon, mldonkey daemon & samba server in my home.

1. first I take a look the following info as reference.
http://drizztcp.wordpress.com/category/pandaboard/

2. Grab the Ubuntu 12.04 image from http://cdimage.ubuntu.com/releases/12.04/release/. I choose http://cdimage.ubuntu.com/releases/12.04/release/ubuntu-12.04-preinstalled-server-armhf+omap4.img.gz for my Pandaboard A2.

3. Make bootable SDCard & following the install instruction. https://wiki.ubuntu.com/ARM/OmapDesktopInstall

4. Now, I have an bootable Panda.

5. Configuration the hostapd. I don't want just take my panda as AP only. So, I decide to run dhcpd on wlan0.
5.1 dhcp-server part:
5.1.1. apt-get install isc-dhcp-server
5.1.2 modify /etc/default/isc-dhcp-server
- INTERFACES="wlan0"
5.1.3 modify /etc/dhcp/dhcpd.conf
- option domain-name "myhome.net";
- option domain-name-servers 168.95.192.1, 168.95.1.1; (for my Hinet DNS)

- subnet 192.168.0.0 netmask 255.255.255.0 {

range 192.168.0.100 192.168.0.150;

option subnet-mask 255.255.255.0;

option broadcast-address 192.168.0.255;

option routers 192.168.0.254;

}

5.2 hostapd part:

5.2.1 /etc/network/interfaces We need wlan0 has static ip to be the rule of dhcp-server.

- auto wlan0

iface wlan0 inet static

address 192.168.0.254

netmask 255.255.255.0

network 192.168.0.0

broadcast 192.168.0.255

5.2.2 /etc/hostapd/hostapd.conf

- interface=wlan0

driver=nl80211

ssid=panda-wifi

hw_mode=g

ieee80211n=1 # enable 802.11n support.

wmm_enabled=1

#ht_capab=[HT40-][HT40+] #Ti wl1271 only up to 65Mbps. HT40 will cause module hang.

channel=5

macaddr_acl=0

#0 is allow all connection, 1 is deny all connect, only accept in hostspd.accept

accept_mac_file=/etc/hostapd/hostapd.accept

deny_mac_file=/etc/hostapd/hostapd.deny

auth_algs=1

ignore_broadcast_ssid=0

wpa=2

wpa_passphrase=xxxxxx #choose the password you want.

wpa_key_mgmt=WPA-PSK

wpa_pairwise=TKIP

rsn_pairwise=CCMP

5.2.3 touch /etc/hostapd/hostapd.accept & /etc/hostapd/hostapd.deny to let hostapd daemon running.

OK, we have wlan0 & hostapd work now. Next, I want the pppoe work. Zyxel P874 seems performance is not good enough for P2P.

6. PPPoE on eth0

6.1 install ppp, pppoe support

- apt-get install ppp pppconfig pppoe pppoeconf

6.2 /etc/ppp/peers/dsl-provider

- pty "/usr/sbin/pppoe -I eth0 -T 80 -m 1452"

noipdefault

usepeerdns

defaultroute

user "????????@ip.hinet.net"

6.3 /etc/ppp/chap-secrets, /etc/ppp/pap-secrets

- "????????@ip.hinet.net" * "??????"

6.4 /etc/network/interfaces

- add dsl-provider section

auto dsl-provider

iface dsl-provider inet ppp

provider dsl-provider

6.5 PPPoE keepalive.sh (for auto-reconnect)

#!/bin/sh

# keepalive.sh

# This is a keepalive script for the Casema cable modems. This script was

# lifted from the /usr/doc/HOWTO/unmaintained/mini/Dynamic-IP-Hacks

# document. There should be an entry in your crontab looking like:

# */2 * * * * /etc/ppp/keepalive.sh

# to run this script every 2 minutes to see if your connection is still

# up, if not, gracefully kill the pppd process and remake it.

# Modify paths as necessary.

if [ -f /var/run/ppp0.pid ]; then

testing=$(ping -c4 -l4 168.95.192.1 2>&1 | grep "0 packets")

if [ "$testing" != "" ]; then

/usr/bin/poff -a

sleep 10

/usr/bin/pon dsl-provider

else

/usr/bin/pon dsl-provider

6.6 /etc/crontab

- */2 * * * * root /etc/ppp/keepalive.sh (for auto-reconnect)

7. To be an Wireless router

7.1 /etc/sysctl.conf

- enable IPv4 forward

net.ipv4.ip_forward=1

7.2 add iptable rule.

- wlan0 as LAN (192.168.0.xxx/24) , ppp0 as Internet connection

7.2.1 /etc/firewall-rules

*nat

:PREROUTING ACCEPT [0:0]

:POSTROUTING ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A POSTROUTING -s 192.168.0.0/24 -o ppp0 -j MASQUERADE

COMMIT

*filter

:INPUT DROP [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -i wlan0 -s 127.0.0.1/8 -j DROP

-A OUTPUT -o wlan0 -d 127.0.0.1/8 -j DROP

-A INPUT -i ppp0 -s 127.0.0.1/8 -j DROP

-A OUTPUT -o ppp0 -d 127.0.0.1/8 -j DROP

-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

-A INPUT -s 127.0.0.0/8 -d 127.0.0.0/8 -i lo -j ACCEPT

-A INPUT -i ppp0 -p tcp -m tcp --dport 22 -j ACCEPT

#for transmission package

-A INPUT -i ppp0 -p tcp -m tcp --dport 9091 -j ACCEPT

-A INPUT -i ppp0 -p tcp -m tcp --dport 51413 -j ACCEPT

#for FTP

-A INPUT -i wlan0 -p tcp -m tcp --dport 20 -j ACCEPT

-A INPUT -i wlan0 -p tcp -m tcp --dport 21 -j ACCEPT

# for SSH

-A INPUT -i wlan0 -p tcp -m tcp --dport 22 -j ACCEPT

#for SMB/CIFS

-A INPUT -i wlan0 -p tcp -m tcp --dport 139 -j ACCEPT

-A INPUT -i wlan0 -p tcp -m tcp --dport 445 -j ACCEPT

#for transmission package

-A INPUT -i wlan0 -p tcp -m tcp --dport 4001 -j ACCEPT

-A INPUT -i wlan0 -p tcp -m tcp --dport 9091 -j ACCEPT

#for SMB/CIFS

-A INPUT -i wlan0 -p udp -m udp --dport 137 -j ACCEPT

-A INPUT -i wlan0 -p udp -m udp --dport 138 -j ACCEPT

#deny hacker scan

-A INPUT -p tcp --tcp-flags ALL NONE -j DROP

-A FORWARD -p tcp --tcp-flags ALL NONE -j DROP

-A INPUT -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP

-A FORWARD -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP

-A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP

-A FORWARD -p tcp --tcp-flags SYN,RST SYN,RST -j DROP

-A INPUT -p tcp --tcp-flags FIN,RST FIN,RST -j DROP

-A FORWARD -p tcp --tcp-flags FIN,RST FIN,RST -j DROP

-A INPUT -p tcp --tcp-flags ACK,FIN FIN -j DROP

-A FORWARD -p tcp --tcp-flags ACK,FIN FIN -j DROP

-A INPUT -p tcp --tcp-flags ACK,URG URG -j DROP

-A FORWARD -p tcp --tcp-flags ACK,URG URG -j DROP

# icmp allow list

-A INPUT -p icmp --icmp-type 0 -j ACCEPT

-A INPUT -p icmp --icmp-type 3 -j ACCEPT

-A INPUT -p icmp --icmp-type 3/4 -j ACCEPT

-A INPUT -p icmp --icmp-type 4 -j ACCEPT

-A INPUT -p icmp --icmp-type 11 -j ACCEPT

-A INPUT -p icmp --icmp-type 12 -j ACCEPT

-A INPUT -p icmp --icmp-type 14 -j ACCEPT

-A INPUT -p icmp --icmp-type 16 -j ACCEPT

-A INPUT -p icmp --icmp-type 18 -j ACCEPT

COMMIT

7.2.2 /etc/network/interfaces

- modify dsl-provider section.

auto dsl-provider

iface dsl-provider inet ppp

pre-up iptables-restore < /etc/firewall-rules

provider dsl-provider

8. install transmission daemon & do basic setting.

BTW, I upgrade the kernel to 3.4.0 (from PPA) & upgrade the tiwlan-wl12xx-dkms, tiwlan-wl12xx-firmware to help wl1271 more stable.

Done...

星期一, 10月 15, 2012

Upgrade lucid to precise

1. boot.scr mmc init 2;fatload mmc 2 80200000 uImage;bootm 0x80200000 setenv bootargs console=ttyO2,115200n8 mem=512M@0x80000000 root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait mpurate=${mpurate} ethaddr=${ethaddr} omapdss.def_disp=dvi omapfb.mode=dvi:800x600MR-16@60 vram=4M --no-log ps: --no-log is workaround for "init: Failed to create pty - disabling logging for job"

2. apt sources.list modify /etc/apt/sources.list, replace lucid to precise

3. do dist-upgrade apt-get dist-upgrade -o APT::Immediate-Configure=false during dist-upgrade, some configuration file will be changed

4. mkdir lib/modules dir mkdir -p /lib/modules/2.6.37-gb0042ce touch /lib/modules/2.6.37-gb0042ce/modules.dep

5. remove old udev net rules rm /etc/udev/rules.d/70-persistent-net.rules

6. do backup tar cvpf gogobox-ubuntu-precise-20121015.tar.gz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys /

Allen's memo