B.A.T.M.A.N October 2008

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

18 participants
13 discussions

[B.A.T.M.A.N.] Batman gateway lock ups
by Outback Dingo 21 Jul '09

21 Jul '09

see pastebin http://www.pastebin.ca/1194874 pertinent info dmesg | grep 'batgat loaded' batgat: [init_module:96] batgat loaded rv1025 uname -a Linux nightwing 2.6.23.16 #16 Tue Apr 22 20:00:17 ART 2008 mips unknown root@nightwing:~# batmand -v WARNING: You are using the unstable batman branch. If you are interested in *using* batman get the latest stable release ! B.A.T.M.A.N. 0.3-beta (compatibility version 5) lsmod Module Size Used by Tainted: P sch_htb 14048 2 ath_ahb 103616 0 wlan_xauth 480 0 wlan_wep 4000 0 wlan_tkip 9856 0 wlan_ccmp 5440 2 wlan_acl 1920 0 ath_rate_minstrel 8352 1 ath_hal 136832 3 ath_ahb,ath_rate_minstrel wlan_scan_sta 8768 1 wlan_scan_ap 6656 0 wlan 152464 10 ath_ahb,wlan_xauth,wlan_wep,wlan_tkip,wlan_ccmp,wlan_acl,ath_rate_minstrel,wlan_scan_sta,wlan_scan_ap batgat 10944 1 ipt_iprange 672 0 ipt_TOS 832 0 ipt_TTL 928 0 xt_MARK 960 3 ipt_ECN 1472 0 xt_CLASSIFY 640 0 ipt_ttl 704 0 ipt_tos 544 0 ipt_time 1568 0 xt_tcpmss 1088 0 xt_statistic 832 0 xt_mark 672 7 xt_mac 736 3 xt_length 736 0 ipt_ecn 1024 0 xt_DSCP 1056 0 xt_dscp 832 0 imq 2096 0 ipt_IMQ 672 2 xt_string 896 0 xt_layer7 9840 0 ipt_ipp2p 6784 0 ipt_LOG 4640 0 xt_CHAOS 1792 0 xt_DELUDE 2624 1 xt_TARPIT 2816 1 xt_quota 800 0 xt_portscan 2016 0 xt_pkttype 704 0 xt_physdev 1488 0 ipt_owner 800 0 iptable_raw 832 0 xt_NOTRACK 832 0 xt_CONNMARK 1088 0 ipt_recent 4992 0 xt_helper 992 0 xt_conntrack 1312 0 xt_connmark 832 0 xt_connbytes 1312 0 tun 6592 0

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[B.A.T.M.A.N.] [PATCH] Make batman timer functions thread safe
by Sven Eckelmann 19 Dec '08

19 Dec '08

The calculation inside of update_internal_clock aren't atomic and can lead to bogus time informations when many threads calling get_time_msec64 or get_time_msec. Signed-off-by: Sven Eckelmann <sven.eckelmann(a)gmx.de> --- batman/posix/posix.c | 17 +++++++++++++++-- 1 files changed, 15 insertions(+), 2 deletions(-) diff --git a/batman/posix/posix.c b/batman/posix/posix.c index dd24a65..042a2b9 100644 --- a/batman/posix/posix.c +++ b/batman/posix/posix.c @@ -49,6 +49,7 @@ static float system_tick; uint8_t tunnel_running = 0; +static pthread_mutex_t batman_clock_mutex = PTHREAD_MUTEX_INITIALIZER; void update_internal_clock() { @@ -61,14 +62,26 @@ void update_internal_clock() uint32_t get_time_msec() { + uint32_t time; + + pthread_mutex_lock(&batman_clock_mutex); update_internal_clock(); - return (uint32_t)(((float)(batman_clock_ticks) * 1000) / system_tick); + time = (uint32_t)(((float)(batman_clock_ticks) * 1000) / system_tick); + pthread_mutex_unlock(&batman_clock_mutex); + + return time; } uint64_t get_time_msec64() { + uint64_t time; + + pthread_mutex_lock(&batman_clock_mutex); update_internal_clock(); - return (uint64_t)(((float)(batman_clock_ticks) * 1000) / system_tick); + time = (uint64_t)(((float)(batman_clock_ticks) * 1000) / system_tick); + pthread_mutex_unlock(&batman_clock_mutex); + + return time; } /* batman animation */ -- 1.6.0.1

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[B.A.T.M.A.N.] batman - how does "fast internet connection" connection work
by david johnson 10 Nov '08

10 Nov '08

Hi First an introduction - I am a David Johnson - I've been working on mesh protocols for a few years now and I've built a 49 node wireless grid to benchmark mesh protocols in South Africa: http://wirelessafrica.meraka.org.za/wiki/index.php/49-node_Indoor_Mesh Elektra and I did some experiments with batman (do I have to use the dots @#!!!) and olsr at the beginning of the year and we wrote a paper showing how batman outperforms olsr on CPU usage and better throughput due to less flapping. The results were very impressive! I'm now in the USA starting a PhD in mesh and I've decided to work on batman in one of my networking projects. We have this idea to try and improve gateway location performance by measuring real throughput at the gateway and then allowing nodes to optimally pick gateways that will give them the best throughput to the Internet but in a fair manner - ie. one user musn't disadvantage another. I would like to understand how the "fast internet connection" gateway location node works batmand -r 1 [interface]?: It says it considers link quality and advertised gateway class - what formula does it used to combine these two together so that it compare others against each other. Thanks and look forward to becoming part of the discussion David

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[B.A.T.M.A.N.] BMX problem in r1138 with client node and tun
by Julio Cesar Puigpinos 04 Nov '08

04 Nov '08

Hi I'm having a problem with bmxd-r1138, bat0 is not created in client node. The gateway is started with: -o 2000 -g 5000 ath2. The client is started with: -o 2000 -r 1 ath2 Using this parameters and OpenWRT Kamikaze r13037 in the nodes: client gw Works? bmxd-r1062 bmxd-r1062 YES bmxd-r1138 bmxd-r1062 YES bmxd-r1138 bmxd-r1138 NO bmxd-r1062 bmxd-r1138 NO In bmxd-r1138, the debug level 3 shows: [ 39193] select() indicated changed interface status! Going to check interfaces! [ 76206] change route to 5.255.22.64 via 5.255.22.64 1 / 100 (prev. via 0.0.0.0 0) [ 76212] found new gateway 5.255.22.64, announced by 5.255.22.64 -> class: 49 - 4MBit/1024KBit, new supported tunnel types TWT, OWT [ 200028] using default tunnel to GW 5.255.22.64 (gw_flags: 49, packet_count: 610, gw_product: 238144) [ 200030] add_default_route()... [ 200039] client_to_gw_tun() started... [ 200039] send ip request to gateway: 5.255.22.64, preferred IP: 0.0.0.0 [ 201228] send ip request to gateway: 5.255.22.64, preferred IP: 0.0.0.0 .............. 57 the same message ....................... [ 270269] send ip request to gateway: 5.255.22.64, preferred IP: 0.0.0.0 [ 270470] Gateway client - disconnecting from unresponsive gateway (5.255.22.64) ! [ 270470] Gateway client - Maximum number of tunnel ip requests send ! [ 270471] Gateway client - Ignoring this GW for 10 secs [ 270471] terminating client_to_gw_tun thread: is_aborted(): NO, curr_gateway: 4801776, deleted: 0 [ 270475] Error - can't delete route to 0.0.0.0/0 via 0.0.0.0 (table 68): No such process [ 270482] Error - can't delete tun device: Inappropriate ioctl for device If you need more info, let me know it. Saludos, Julio -- www.lugro-mesh.org.ar/ Wireless Mesh Networks Group www.lugro.org.ar GNU/Linux User Group Rosario, Argentina Slackware rulez :P www.slackware.org NO A LA MATRICULA!!!: http://noalamatricula.wordpress.com/

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[B.A.T.M.A.N.] batman-exp still has sometimes around 90% CPU load
by Stephan Enderlein (Freifunk Dresden) 28 Oct '08

28 Oct '08

Hi, I'm using batman-experimental rev1145. I test this release since 2 days. I found that a thread of batmand was consuming around 90% of cpu resources. Mem: 15064K used, 15560K free, 0K shrd, 1152K buff, 5176K cached CPU: 10.0% usr 90.0% sys 0.0% nice 0.0% idle 0.0% io 0.0% irq 0.0% softirq Load average: 0.98 1.00 0.97 PID PPID USER STAT VSZ %MEM %CPU COMMAND 4464 1941 root R 1216 3.9 84.1 /sbin/batmand -s 10.12.0.1 -a 10.12.10.16/28 -r 1 --t 63 --no-unreachable-rule --no-throw-rules 1151 1 root S 1216 3.9 0.0 /sbin/batmand -s 10.12.0.1 -a 10.12.10.16/28 -r 1 --t 63 --no-unreachable-rule --no-throw-rules 1941 1151 root S 1216 3.9 0.0 /sbin/batmand -s 10.12.0.1 -a 10.12.10.16/28 -r 1 --t 63 --no-unreachable-rule --no-throw-rules it was not possibe to connect to the running batmand. A call "batmand -c" just hangs without printing current parameters. I had this error in previous revision where you disabled the debug task. Batmand was running without problems.Have you enabled the debug task again in current revision? any idea or solution? Regards /Stephan --------------------------------------- Dipl.Informatiker(FH) Stephan Enderlein Freifunk Dresden

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[B.A.T.M.A.N.] dose batman-adv support multi-gateway
by 唐鼎 24 Oct '08

24 Oct '08

hi dose batman-adv support multi-gateway. If there is a router which connets two mesh devices(gateway) through same layer 2 wired network, can the mesh network select a better gateway to the router for one packet. 2008-10-24

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[B.A.T.M.A.N.] Re: batman in atheros
by M. Peterson 23 Oct '08

23 Oct '08

Hello Batmans, can you provide info to Luiz, to integrate Batman into the Atheros Linux Wlan driver as a a default package? Thx Max http://thread.gmane.org/gmane.linux.kernel/747372 http://www.golem.de/0810/63121.html On Thu, Oct 23, 2008 at 2:35 PM, Luis R. Rodriguez <lrodriguez(a)atheros.com>wrote: > On Thu, Oct 23, 2008 at 12:25:28PM -0700, M. Peterson wrote: > > can you integrate batman ? so that atheros drivers provide it? > > I tried to read the FAQ and Documentaion and nothing explained what the > difference is between 11s. What is it? > > If batman != 11s, then your best bet is to contribute code to mac80211 > to enable batman as an option. > > Luis >

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[B.A.T.M.A.N.] current vis revision (1128) not working with batmand-experimental
by Stephan Enderlein (Freifunk Dresden) 21 Oct '08

21 Oct '08

Hi, I had some problems with vis which was consuming a lot of memory within a short time after running for days. So I decided to use the current revision of vis. But it seems that the vis does not process any incomming vis packet from batman-experimental. Do you have any idea to get it running? Best regards Stephan --------------------------------------- Dipl.Informatiker(FH) Stephan Enderlein Freifunk Dresden

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[B.A.T.M.A.N.] every phone a hotspot? -> http://www.walkinghotspot.com/
by M. Peterson 20 Oct '08

20 Oct '08

Here the idea, i posted some weeks ago... every openmoko phone a hotspot http://www.walkinghotspot.com/ http://translate.google.de/translate?u=http%3A%2F%2Fwww.golem.de%2F0810%2F6…

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Re: [B.A.T.M.A.N.] Problem with gateway-dhcp
by Marek Lindner 18 Oct '08

18 Oct '08

On Wednesday 15 October 2008 21:26:01 Tobias Gieseke wrote: > -Do I have to start the batmand with the WAN-Interface (vlan1)? Meaning: > batmand -g 10mbit eth1 vlan1 No, that is unnecessary. Whenever the batman gateway receives packets for the internet it simply adds them to the routing queue. The kernel itself will handle further routing. > -Do I have to announce the 192.168.208.0/24 net with batman? (I guess not) Not really unless you want to get a connection to a distinct node other than the internet gateway. Remember: you also need a route back if you do so. > -Do I have to set the DNS-Server manualy or is the gateway acting as DNS DNS handling is not part of batman. You need to set appropriate DNS entries on the clients. > I'm sorry this turns out to be more a routing problem than a batman/mesh > problem. Hope you help me anyway. Sure, no problem. Let us know whether it solves your problem or not. Regards, Marek

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B.A.T.M.A.N October 2008