B.A.T.M.A.N November 2008

b.a.t.m.a.n@lists.open-mesh.org

14 participants
27 discussions

[B.A.T.M.A.N.] [PATCH] Use %zu to print sizeof(x) with printf
by Sven Eckelmann 21 Nov '08

21 Nov '08

sizeof returns size_t (a unsigned integer with a high bit count) and has to be printed with the prefix before length motifier. Signed-off-by: Sven Eckelmann <sven.eckelmann(a)gmx.de> --- batman-experimental/control.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/batman-experimental/control.c b/batman-experimental/control.c index de65e89..9491019 100644 --- a/batman-experimental/control.c +++ b/batman-experimental/control.c @@ -57,7 +57,7 @@ void init_control( void ) { // just to check if sizeof( struct xyz { char[] }__attribute__((packed)); ) is zero for all compilers... if ( sizeof( struct cntl_msg ) != 20 ) { - printf( "sizeof cntl_msg %d MUST BE 20 !!!\n", sizeof( struct cntl_msg ) ); + printf( "sizeof cntl_msg %zu MUST BE 20 !!!\n", sizeof( struct cntl_msg ) ); exit(EXIT_FAILURE); } -- 1.6.0.4

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[B.A.T.M.A.N.] gateway "expiring" instantly
by Derek C 21 Nov '08

21 Nov '08

Hi all, On a couple of test x86 based openwrt boxes (PC engines WRAP boards) I'm seeing a client (non-gateway) batman node setting-up and dropping the gateway over-and-over again. With debug set to 3 I see the log output below. Could it be because the WRAP boards have no clock battery ? They always boot up and set their clocks to Jan 1 2000. thanks for any help Derek Gateway client - got IP (169.254.0.1) from gateway: 2.255.0.1 Adding default route via gate1 (table 68) Gateway client - gateway (2.255.0.1) says: IP (169.254.0.1) is expired Deleting default route via gate1 (table 68) Adding default route to 2.255.0.1 (gw_flags: 65, tq: 251, gw_product: 0) Gateway client - got IP (169.254.0.1) from gateway: 2.255.0.1 Adding default route via gate1 (table 68) Gateway client - gateway (2.255.0.1) says: IP (169.254.0.1) is expired Deleting default route via gate1 (table 68) Adding default route to 2.255.0.1 (gw_flags: 65, tq: 251, gw_product: 0) Gateway client - got IP (169.254.0.1) from gateway: 2.255.0.1 Adding default route via gate1 (table 68) Gateway client - gateway (2.255.0.1) says: IP (169.254.0.1) is expired Deleting default route via gate1 (table 68) Adding default route to 2.255.0.1 (gw_flags: 65, tq: 251, gw_product: 0) Gateway client - got IP (169.254.0.1) from gateway: 2.255.0.1 Adding default route via gate1 (table 68) Gateway client - gateway (2.255.0.1) says: IP (169.254.0.1) is expired Deleting default route via gate1 (table 68) Adding default route to 2.255.0.1 (gw_flags: 65, tq: 251, gw_product: 0) Gateway client - got IP (169.254.0.1) from gateway: 2.255.0.1 Adding default route via gate1 (table 68) Gateway client - gateway (2.255.0.1) says: IP (169.254.0.1) is expired Deleting default route via gate1 (table 68) -- Derek C

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[B.A.T.M.A.N.] My proposed network - is it ok?
by Derek C 20 Nov '08

20 Nov '08

Hi all, I'm getting ready to install a BATMAN based MESH node (10dBM omni) in a housing estate connected via a 2KM transparent bridge 5Ghz wireless link to the data centre. Is it OK to have my base station(s) MESH openwrt boards have BATMAN running on two interfaces? the Ethernet NIC (to bridge) - & WIFI omni. The reason I'm asking is that I'd like the base station(s) to find their last hop to be the datacentre server (running BATMAN). I want to keep the Internet NATing in one place (datacentre gateway server) - this would ensure I'd have no problem with flapping routes once I have multiple base stations up. Does this sound ok to you? Its the BATMAN on two interfaces thing I'm concerned about - will it work I wonder? thanks for any info Derek I was hoping on setting up a -- Derek C

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[B.A.T.M.A.N.] Batman security
by Derek C 18 Nov '08

18 Nov '08

Hi all, Is there any way to secure the traffic on the adhoc NIC with BATMAN - like the secure plugin in OLSRd? thanks, Derek -- Derek C

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[B.A.T.M.A.N.] MASQUERADING on the gate0 NIC
by Derek C 18 Nov '08

18 Nov '08

Hi again, I'm currently testing with a few openwrt boards - generally its going well and I'm connected to the Internet via a BATMAN node thats talking to a gateway node - pretty good stuff. I've noticed something. On my (non gateway) node the traffic is going out the "gate0" tunnel NIC. My notebook is connected wirelessly to an [V]AP on the node so I need to have a MASQUERADE rule on the gate0 NIC to allow my local AP subnet (192.168.100.0/24) Internet access. In a live network, with lots of nodes, will there still only ever be one gateX NIC ? - is it enough to just have an "iptables -t nat -A POSTROUTING -o gate0 -j MASQUERADE" rule ? thanks very much for all the help Derek -- Derek C

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[B.A.T.M.A.N.] Visualization server
by Derek C 17 Nov '08

17 Nov '08

Hi all, Is there any links re: a batman visualization server? (servers themselves and/or the visualization protocol format?) I've seen a link to https://www.open-mesh.net/batman/vis but I've noticed that (generally) links to open-mesh.net seem to all give 404s. thanks for any info! Derek -- Derek C

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[B.A.T.M.A.N.] ipkg install batman over ssh: postinst fails
by jan＠aims.ac.za 17 Nov '08

17 Nov '08

Hi I have a mesh running freifunk â.6.32 nodes. I am using the recommended batman0.2 ipkg to test it next to OLSR. (Is there no ipkg package and source for 0.3 or the latest stable?) When I did two nodes manually, I installed and set the network migration, and saw some batman packets. Then I went ahead and scripted an install on all the nodes (about 40). It goes, with dropbear authorized_keys, for each node in $NEWIP: # batman sources scp root@${NEWIP}:/etc/ipkg.conf . patch ipkg.conf < ipkg.conf.patch scp ipkg.conf root@${NEWIP}:/etc/ipkg.conf # update ssh root@${NEWIP} ipkg update ######################### ## Admin > B.A.T.M.A.N ## ######################### # Setup screen for migration of network (only shown once) /usr/sbin/nvram set ff_bat_netmig=172.18/172.16 # B.A.T.M.A.N. on/off /usr/sbin/nvram set ff_bat_start=1 # WLAN as eth1:bat on subnet/16 /usr/sbin/nvram set ff_bat_ran_on=1 /usr/sbin/nvram set ff_bat_ran_if=eth1:bat /usr/sbin/nvram set ff_bat_ran_ip=172.16.174.97 /usr/sbin/nvram set ff_bat_ran_pf=16 # LAN as br0 on subnet/29 /usr/sbin/nvram set ff_bat_lan_on=1 /usr/sbin/nvram set ff_bat_lan_if=br0 /usr/sbin/nvram set ff_bat_lan_ip=192.168.174.97 /usr/sbin/nvram set ff_bat_lan_pf=29 # local internet-bandwidth: This is not internet gw /usr/sbin/nvram set ff_bat_gw_uplink=0 # common used gateway: set no default route /usr/sbin/nvram set ff_bat_gw_choose=0 # preferred gateway # HNA # Viz server # Hello interval (1000ms) # Deamon stakeout # Stop OLSR # Open firewall /usr/sbin/nvram set ff_bat_fw=1 # ########################## ## Admin > B.A.T.M.A.N. ## ########################## ssh root@${NEWIP} ipkg install batmand freifunk-batman # Next line must be done with expect else nvram not found # For now it will be done on reboot anyway #ssh root@${NEWIP} /etc/init.d/S66batman restart The nvram command is usually not in the path over an ssh like that (not interactive, passing the command to ssh as an argument) thus I use /usr/sbin/nvram. In two places this fail: The freifunk-batman package: Unpacking freifunk-batman...Done. Configuring freifunk-batman...//usr/lib/ipkg/info/freifunk-batman.postinst: 10: nvram: not found //usr/lib/ipkg/info/freifunk-batman.postinst: 10: nvram: not found Done. And the S66batman restart, which I did manually. Now the batman runs, has all the nvram settings, though I didn't go through the prompt for network migration via the web interface -- I did the script above. But there are no batman neigbours or messages shown on the info/status pages in the web interface. Even when I reinstalled freifunk-batman two nodes manually, that is via interactive ssh, and there was no error, I am still getting no batman neigbours shown. Usually I do such cases with expect, there are several places in my freifunk install / upgrade script where I do this). The long term answer is clearly? a trx/bin image of our own. In the meantime, do I have to reflash them, install batman manually or with expect? Can I even do that or what happens when the web interface is used to enter the network migration info, which is now not happening on my nodes? regards, Jan

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[B.A.T.M.A.N.] Newbe - almost have batman up and running (almost)
by Derek C 17 Nov '08

17 Nov '08

Hi all, I'm trying to try-out batman with kamikaze 8.09 on some Atheros boards (Ubiquity litestation 2s). So far almost so good. I have both boards booted. I've setup the ath0 interfaces as Adhoc with IP addresses 5.0.0.1/8 and 5.0.0.2/8 and I can ping between them. batmand is started on both boards and on the Internet gateway board I've run "batmand -c -g 4Mbit" and on the radio linked node board I've run "batmand -c -r 3". Then I see some great looking messages: Found new gateway 5.255.0.1 -> class: 49 - 4MBit/1024KBit Adding default route to 5.255.0.1 (gw_flags: 49, tq: 110, gw_product: 0) Gateway client - got IP (169.254.0.1) from gateway: 5.255.0.1 Adding default route via gate0 (table 68) I see that there is indeed a "gate0" tunnel NIC created and although I don't see a new default route if I run "ip route list table 68" I CAN see a line "default dev gate0 proto static scope link src 169.254.0.1". Still - I don't much like the look of that 169.254.0.1 IP address ? I am not getting actual Internet access - which is why I'm looking for help thanks for any info! Derek -- Derek C

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[B.A.T.M.A.N.] batman-adv debian announcement
by Marek Lindner 17 Nov '08

17 Nov '08

Hi, even if the news is still some days old - its worth mentioning: batman-advanced is now available in Debian! The packages are available through your favorite dpkg frontend (apt-get, aptitude, ...) using the unstable repositories. To follow the package development you can visit the following pages: http://packages.debian.org/sid/batman-adv-source http://packages.debian.org/sid/batman-adv-battool batman-adv-source contains the source code and can be compiled for your kernel using module-assistant [1]. batman-adv-battool contains the battool which provides ping, traceroute and other tools for the batman-adv network. Big thanks to Sven Eckelmann, Simon Wunderlich and Holger Levsen for their work on these packages. :) BTW, you also can find the current batman stable (0.3) in the lenny and unstable repositories. Here the respective package pages: http://packages.debian.org/lenny/batmand http://packages.debian.org/sid/batmand Regards, Marek [1] http://packages.debian.org/sid/module-assistant

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[B.A.T.M.A.N.] Question - Layer 2 / Layer 3 - kernel / userland
by Outback Dingo 16 Nov '08

16 Nov '08

is there a document somewhere with a brief explanation between the differences and benefits of layer 2 / layer 3 and kernel or userland ?? im sure a layer 2 kernel mod is the most efficient, yet, is there a test or comparision and explantion of why or what benefits ? im just doing a comparitive between my current mesh running bmxd in userland and say batman-adv kernel mod, and id prefer to document the data and reasons in the internal wiki for our information, helps not only myself but others understand why :)

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B.A.T.M.A.N November 2008