---------- Forwarded message ---------- From: Robert Schuster theBohemian@gmx.net Date: Fri, Jun 27, 2008 at 12:01 AM Subject: Freifunk@FreeRunner: OLSRD To: List for Openmoko community discussion community@lists.openmoko.org
Hi, you know we already have B.A.T.M.A.N in OpenEmbedded but now I gave good old OLSRD a try too.
I added a recipe for the latest release 0.5.5 and tested it on the device. It is working nicely along with the ar6000 being in ad-hoc mode (the preferred mode for mesh networks ;) ). No luck with 0.5.3 though - it crashes when I want to view the page generated by the httpinfo plugin.
I wanted to do some NATting between the wifi interface and the usbnet connection (effectively making my desktop computer an internet gateway for the Berlin Freifunk community).
However this was impossible since OpenMoko does not provide the iptables package (you can get the kernel modules but not the userspace application). You can build it on your own and then everything is fine though.
There are also some minor issues with the wifi driver. I reported this[0] a while ago already.
I am already happy but I would be so even more if: - olsrd version preference could be set to 0.5.5 - iptables could be installed directly via opkg
The FreeRunner as a wifi mesh-node is a nice use case for the time after being a mobile phone. It would be one of the very few nodes that have a screen attached. :)
I would like to offer screen shots but there is nothing spectacular to see on them. But perhaps you like some console output instead:
root@om-gta02:~# iwconfig eth0 eth0 AR6000 802.11g ESSID:"olsr.freifunk.net" Mode:Ad-Hoc Frequency:2.457 GHz Cell: 02:CA:FF:EE:BA:BE Bit Rate=1 Mb/s Tx-Power=15 dBm Sensitivity=0/3 Retry:on Encryption key:off Power Management:off Link Quality:168/94 Signal level:-183 dBm Noise level:-96 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0
(A fixed BSSID of '02:CA:FF:EE:BA:BE' is what we use in Berlin to overcome some problems with ad-hoc mode specification.)
Starting the daemon:
root@om-gta02:~# /etc/init.d/olsrd start Starting OLSR routing protocol daemon: olsr.org
*** olsr.org - 0.5.5 *** Build date: 2008-06-26 23:09:18 on linkist http://www.olsr.org
Parsing file: "/etc/olsrd.conf" olsr.org - 0.5.5 detaching from the current process... done. root@om-gta02:~# pidof olsrd 4479
Pinging a node that is a few hops away:
root@om-gta02:~# ping 104.192.0.156 PING 104.192.0.156 (104.192.0.156): 56 data bytes 64 bytes from 104.192.0.156: seq=0 ttl=62 time=89.001 ms 64 bytes from 104.192.0.156: seq=3 ttl=62 time=45.555 ms
--- 104.192.0.156 ping statistics --- 4 packets transmitted, 2 packets received, 50% packet loss round-trip min/avg/max = 45.555/67.278/89.001 ms
Traceroute to it:
root@om-gta02:~# traceroute 104.192.0.156 traceroute to 104.192.0.156 (104.192.0.156), 30 hops max, 38 byte packets 1 104.131.4.24 (104.131.4.24) 15.096 ms 29.789 ms 12.770 ms 2 104.131.4.26 (104.131.4.26) 12.536 ms 11.377 ms 10.147 ms 3 104.192.0.156 (104.192.0.156) 25.497 ms 51.212 ms 51.228 ms
Actually I could find something that may show I am really using this on the Neo. I attached is httpinfo plugin generated webpage showing my configuration. There are few devices where eth0 is a wifi card. :D
If you are interested I also attached by olsrd.conf. You need to have olsrd-plugin-httpinfo, olsrd-plugin-nameservice (didn't work as expected) and olsrd-plugin-dyngw installed besides the daemon.
Regards Robert
[0] - http://docs.openmoko.org/trac/ticket/1392
olsr.org OLSR daemon http://www.olsr.org/ [image: olsrd logo]http://www.olsr.org/
- Configuration http://192.168.0.202:8080/config - Routes http://192.168.0.202:8080/routes - Links/Topology http://192.168.0.202:8080/nodes - All http://192.168.0.202:8080/all - About http://192.168.0.202:8080/about
Version: olsr.org - 0.5.5 (built on 2008-06-26 23:09:18 on linkist) OS: GNU/Linux System time: *Fri, 27 Jun 2008 14:27:37* Olsrd uptime: *00 hours 15 minutes 55 seconds* HTTP stats(ok/dyn/error/illegal): *20/0/0/0* Click here http://192.168.0.202:8080/cfgfile to *generate a configuration file for this node*. Variables Main address: *104.131.4.193* IP version: 4 Debug level: 0 FIB Metrics: flat Pollrate: 0.05 TC redundancy: 2 MPR coverage: 7 NAT threshold: 1.000000 Fisheye: Enabled TOS: 0x0010 RtTable: 0x00fe/254 RtTableDefault: 0x0000/0 Willingness: 7 LQ extension: Enabled LQ level: 2 LQ winsize: 100 Interfaces eth0 IP: 104.131.4.193 MASK: 255.0.0.0 BCAST: 104.255.255.255 MTU: 1472 WLAN: Yes STATUS: UP*Olsrd is configured to run even if no interfaces are available* Plugins Name Parameters olsrd_nameservice.so.0.3 KEY, VALUE "latlon-file", "/var/run/latlon.js" "latlon-infile", "/var/run/latlon.txt" "timeout", "3600" "interval", "180" "suffix", ".olsr" "hosts-file", "/var/hosts" "name", "freerunner.olsr" olsrd_httpinfo.so.0.1 KEY, VALUE "Net", "0.0.0.0 0.0.0.0" "Host", "127.0.0.1" "port", "8080" olsrd_dyn_gw.so.0.4 KEY, VALUE "Ping", " 194.25.2.129" "Ping", "141.1.1.1" "Interval", "40" Announced HNA entries Network 0.0.0.0/0 (C)2005 Andreas Tønnesen http://www.olsr.org
################################################## ## Freifunk Default OLSRD.CONF ## ## olsr.org OLSR daemon config file ## ## onelektra at gmx dot net ## ##################################################
# # Lines starting with a # are discarded # # This file was edited by Elektra and needs # olsrd-0.4.10 CVS or higher #
# This file is an example of a typical configuration # for a huge (250 Nodes or more), reliable, scalable # routing-loop-free (well, almost :) and mostly static # network (regarding mobility) using the LQ extention # and FishEyeAlgorithm with LinkQualityDijkstraLimit # to reduce CPU-Overhead
# Debug level(0-9) # If set to 0 the daemon runs in the background # Use Debug level 0 on a embedded system - # debugging draws a lot of CPU-Power
DebugLevel 0
# FishEyeAlgorithm - Disable only if you want to # experience routing loops :) # See the README about Fisheye in the olsrd-source
LinkQualityFishEye 1
# Don't recalculate the Dijkstra-Table for every # incoming TC-Message from nodes more than n hops away - # Disable this algorithm in a huge mesh only if you are # interested to accelerate global warming with overheated CPUs # The first integer tells the algorithm to recalculate # the Dijkstra-table when a TC-Message arrives from a node # not more than n hops away. If set to 0 it will not # recalculate it upon incoming TCs # The second number (float) sets the time interval when # the Dijkstra table will be recalculated anyway. # Whatever comes first...
LinkQualityDijkstraLimit 0 10.0
# IP version to use (4 or 6)
IpVersion 4
# Clear the screen each time the internal state changes
ClearScreen yes
# HNA IPv4 routes # syntax: netaddr netmask # Example Internet gateway: # 0.0.0.0 0.0.0.0
Hna4 { # Don't use this to announce an Internet Gateway - # rather use the dyn_gw plugin that checks wheter you are # actually a gateway or a black hole for other peoples # internet traffic...
# Internet gateway: # 0.0.0.0 0.0.0.0 # more entries can be added: # 192.168.1.0 255.255.255.0 }
# HNA IPv6 routes # syntax: netaddr prefix # Example Internet gateway: Hna6 { # Internet gateway: # :: 0 # more entries can be added: # fec0:2200:106:: 48 }
# Should olsrd keep on running even if there are # no interfaces available? This is a good idea # for a PCMCIA/USB hotswap environment. # "yes" OR "no"
AllowNoInt yes
# TOS(type of service) value for # the IP header of control traffic. # If not set it will default to 16
#TosValue 16
# The fixed willingness to use(0-7) # If not set willingness will be calculated # dynamically based on battery/power status # if such information is available
Willingness 7
# Allow processes like the GUI front-end # to connect to the daemon.
IpcConnect { # Determines how many simultaneously # IPC connections that will be allowed # Setting this to 0 disables IPC
MaxConnections 1
# By default only 127.0.0.1 is allowed # to connect. Here allowed hosts can # be added
Host 127.0.0.1 #Host 10.0.0.5
# You can also specify entire net-ranges # that are allowed to connect. Multiple # entries are allowed
#Net 192.168.1.0 255.255.255.0 }
# Enable Hysteresis only if you want your routing table # to brake down every 5 seconds # Hysteresis is one of this fancy looking 'optimizations' # in RFC 3626 that don't work in real life # If unsure say "NO!"
UseHysteresis no
# Hysteresis parameters # Do not alter these unless you know # what you are doing! # # If you know what you are doing # you make sure that hysteresis # is completely SWITCHED OFF! # # Set to auto by default. Allowed # values are floating point values # in the interval 0,1 # THR_LOW must always be lower than # THR_HIGH.
#HystScaling 0.50 #HystThrHigh 0.80 #HystThrLow 0.30
# Link quality level # 0 = do not use link quality # 1 = use link quality for MPR selection # 2 = use link quality for MPR selection and routing # Defaults to 0
LinkQualityLevel 2
# Link quality window size # Defaults to 10 # 100 is slow but stable...
LinkQualityWinSize 100
# Polling rate in seconds(float). # Default value 0.05 sec
Pollrate 0.05
# TC redundancy # Specifies how much neighbor info should # be sent in TC messages # Possible values are: # 0 - only send MPR selectors # 1 - send MPR selectors and MPRs # 2 - send all neighbors # # defaults to 0 # MultiPointRelais is another notorious # 'optimization' feature in RFC3626... # Switch it off by chosing redundancy value 2
TcRedundancy 2
# # MPR coverage # Specifies how many MPRs a node should # try select to reach every 2 hop neighbor # # Can be set to any integer >0 # # defaults to 1 # # Full coverage is the way to get rid of this # annoying 'optimization'
MprCoverage 7
# Olsrd plugins to load # This must be the absolute path to the file # or the loader will use the following scheme: # - Try the paths in the LD_LIBRARY_PATH # environment variable. # - The list of libraries cached in /etc/ld.so.cache # - /lib, followed by /usr/lib
# Example plugin entry with parameters:
# This plugin generates the information to make those fancy # 2D and 3D topology graphs
#LoadPlugin "olsrd_dot_draw.so.0.3"
#{ # PlParam "accept" "192.168.120.17" #}
# This plugin announces that this node is a gateway into # other networks, it it actually is:
LoadPlugin "olsrd_dyn_gw.so.0.4" { # Here parameters are set to be sent to the # plugin. Theese are on the form "key" "value". # Parameters ofcause, differs from plugin to plugin. # Consult the documentation of your plugin for details.
# Example: dyn_gw params
# how often to check for Internet connectivity # defaults to 5 secs PlParam "Interval" "40"
# if one or more IPv4 addresses are given, do a ping on these in # descending order to validate that there is not only an entry in # routing table, but also a real internet connection. If any of # these addresses could be pinged successfully, the test was # succesful, i.e. if the ping on the 1st address was successful,the # 2nd won't be pinged PlParam "Ping" "141.1.1.1" PlParam "Ping" "194.25.2.129" }
# This plugin announces services available on your router: # Of course the configfile should be present...
# LoadPlugin "olsrd_servicediscover.so.0.3" #{ # PlParam "configfile" "/etc/servicediscover.conf" #};
# Add more plugins here... LoadPlugin "olsrd_httpinfo.so.0.1" { PlParam "port" "8080" PlParam "Host" "127.0.0.1" PlParam "Net" "0.0.0.0 0.0.0.0" }
LoadPlugin "olsrd_nameservice.so.0.3" { PlParam "name" "freerunner.olsr" PlParam "hosts-file" "/var/hosts" PlParam "suffix" ".olsr" PlParam "interval" "180" PlParam "timeout" "3600" PlParam "latlon-infile" "/var/run/latlon.txt" PlParam "latlon-file" "/var/run/latlon.js" }
# Finally, the interfaces section:
# Interfaces and their rules # Omitted options will be set to the # default values. Multiple interfaces # can be specified in the same block # and multiple blocks can be set.
# !!CHANGE THE INTERFACE LABEL(s) TO MATCH YOUR INTERFACE(s)!! # (eg. wlan0 or eth1):
Interface "eth0" {
# IPv4 broadcast address to use. The # one usefull example would be 255.255.255.255 # If not defined the broadcastaddress # every card is configured with is used
# Ip4Broadcast 255.255.255.255
# IPv6 address scope to use. # Must be 'site-local' or 'global'
# Ip6AddrType site-local
# IPv6 multicast address to use when # using site-local addresses. # If not defined, ff05::15 is used
# Ip6MulticastSite ff05::11
# IPv6 multicast address to use when # using global addresses # If not defined, ff0e::1 is used
# Ip6MulticastGlobal ff0e::1
# Emission intervals. # If not defined, RFC proposed values will # be used in most cases.
# Hello interval in seconds(float) HelloInterval 5.0
# HELLO validity time HelloValidityTime 300.0
# TC interval in seconds(float) TcInterval 2.0
# TC validity time TcValidityTime 300.0
# MID interval in seconds(float) MidInterval 5.0
# MID validity time MidValidityTime 300.0
# HNA interval in seconds(float) HnaInterval 5.0
# HNA validity time HnaValidityTime 300.0
# When multiple links exist between hosts # the weight of interface is used to determine # the link to use. Normally the weight is # automatically calculated by olsrd based # on the characteristics of the interface, # but here you can specify a fixed value. # Olsrd will choose links with the lowest value.
# Weight 0
}
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