B.A.T.M.A.N January 2012

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

14 participants
28 discussions

[B.A.T.M.A.N.] [PATCH] batman-adv: fix initialised flag for tt request/responses
by Simon Wunderlich 26 Jan '12

26 Jan '12

When receiving a tt_response, we first delete the old entries and set the initialised flag to false, then add the new received entries, but forgot to set the initialised flag to true again. This may lead to endless loops of requests/responses, as a request is always issued if the initialised flag is not set. Fix this by moving initialised = true from tt_update_changes() to _tt_update_changes(). Signed-off-by: Simon Wunderlich <siwu(a)hrz.tu-chemnitz.de> --- translation-table.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/translation-table.c b/translation-table.c index 27753a0..9a6f315 100644 --- a/translation-table.c +++ b/translation-table.c @@ -1434,6 +1434,7 @@ static void _tt_update_changes(struct bat_priv *bat_priv, */ return; } + orig_node->tt_initialised = true; } static void tt_fill_gtable(struct bat_priv *bat_priv, @@ -1476,7 +1477,6 @@ static void tt_update_changes(struct bat_priv *bat_priv, tt_save_orig_buffer(bat_priv, orig_node, (unsigned char *)tt_change, tt_num_changes); atomic_set(&orig_node->last_ttvn, ttvn); - orig_node->tt_initialised = true; } bool is_my_client(struct bat_priv *bat_priv, const uint8_t *addr) -- 1.7.8.3

2 3

[B.A.T.M.A.N.] [PATCH] batctl: exit on parse error in batctl ll
by Simon Wunderlich 26 Jan '12

26 Jan '12

If the argument could not be understood, we should not try to apply something, but return from the function. Signed-off-by: Simon Wunderlich <siwu(a)hrz.tu-chemnitz.de> --- sys.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/sys.c b/sys.c index 9cdccba..ab7d75f 100644 --- a/sys.c +++ b/sys.c @@ -221,8 +221,11 @@ int handle_loglevel(char *mesh_iface, int argc, char **argv) log_level |= (1 << 1); else if (strcmp(argv[i], "tt") == 0) log_level |= (1 << 2); - else + else { log_level_usage(); + free(path_buff); + return EXIT_FAILURE; + } } snprintf(str, sizeof(str), "%i", log_level); -- 1.7.8.3

2 3

Re: [B.A.T.M.A.N.] Libelf
by Marek Lindner 25 Jan '12

25 Jan '12

Hi, > Thanks for replying. please don't just reply to me in private but to the list. > I am using batman-adv. I eventually decided to do a > full new build with batman included but figuring out what the wiki says. > > Do you have a details "batman for dummies" manual at all? We have a quick-start-guide on our website along with numerous other documents. Did you have a look at that ? If that is not enough you need to be more detailed on what you are looking for. Regards, Marek

2 2

Re: [B.A.T.M.A.N.] Libelf
by Marek Lindner 24 Jan '12

24 Jan '12

Hi, > I am trying to use the latest batman solution. I have a ubiquiti > routerstation pro with opnewrt installed. I have even update it to 10.03.1. > but I cant get batman to install. When I go to the directory I untarred and > try run make I get this error: > > make: can't load library 'libelf.so.0' > > I googled it to death and tried whatever solution I can find but nothing > works. Any ideas how to fix this or where I can get help would be > appreciated? Is there a batman forum yet? just to be sure about that: Are you using batmand or batman-adv ? Regards, Marek

2 1

[B.A.T.M.A.N.] Announcing the Wireless Battle Mesh v5 (26th of March - 1st of April 2012, Athens, Greece)
by Marek Lindner 23 Jan '12

23 Jan '12

========================================================== Announcing the Wireless Battle Mesh v5 (26th of March - 1st of April 2012, Athens, Greece) ========================================================== The next 'Wireless Battle of the Mesh' will take place from Mon 26th till Sun 1st of Arpil in the center of Athens (close to the acropolis), Greece. The event aims to bring together people from across the Globe to test the performance of different routing protocols for ad-hoc networks, like Babel, B.A.T.M.A.N., BMX, and OLSR. If you are a mesh networking enthusiast, community networking activist, or have an interest in mesh networks you have to check this out! Informations about the event are gathered at: http://battlemesh.org/BattleMeshV5 Location ======== The (optional) WBMv5 Warmup event takes place in Sarantaporo (rural area in range of the Olympus mountain). The main event happens at the National Technical University of Athens (NTUA) in the very center of Athens. Registration ============ Registrations will be available at different hackerspaces (Fusolab, HSBXL, /tmp/lab, metalab, CCC, ...) and on the official website for the event at: - http://battlemesh.org/BattleMeshV5_Warmup - http://battlemesh.org/BattleMeshV5 Fees ==== The warmup requires a small fee to cover the transportation costs to Sarantaporo. The main event is free of charge. We offer the possibility to reserve a low-cost bed close to the NTUA for you. Spread the word =============== Feel free to spread the word by forwarding this mail to all lists / people that might be interested in it. Also blogging about the event is more than welcome! Contact ======= * Web: - http://battlemesh.org/BattleMeshV5_Warmup - http://battlemesh.org/BattleMeshV5 * Email: http://ml.ninux.org/mailman/listinfo/battlemesh * IRC: irc.freenode.net #wbmv5

1 0

Re: [B.A.T.M.A.N.] Manual route manipulation [SOLVED]
by Bouterse, Robert 18 Jan '12

18 Jan '12

Sorry, I figured this out myself. Changing the value of /sys/class/net/bat0/mesh/hop_penalty allows me to create artificially "desirable" nodes. So, I have set the hop_penalty as: A=10 B=1 C=5 D=10 ________________________________________ From: b.a.t.m.a.n-bounces(a)lists.open-mesh.org [b.a.t.m.a.n-bounces(a)lists.open-mesh.org] On Behalf Of Bouterse, Robert [robert.bouterse(a)dmh-global.com] Sent: Wednesday, January 18, 2012 12:59 PM To: b.a.t.m.a.n(a)lists.open-mesh.org Subject: [B.A.T.M.A.N.] Manual route manipulation Hi, I am new to the BATMAN list, and I need some help, I am running some feasibility tests on batman-adv for our use. I need to test how well it reroutes traffic when an intermediate node goes away. I need to set up a mesh in a diamond pattern, like: |---->B<----| A<--{ }--->D |---->C<----| Then find out if traffic is being routed through the B node, shutdown the B node, and see that the route "heals" to using node C instead. I was able to do this on open80211s by using the "iw station set plink_action block" command to force the A node to never communicate directly with the D node, and wireshark to verify the communications. Does anyone know of a way of doing these types of path manipulations with batman-adv? I didn't see anything in batctl that looked like it would work. Maybe there are /sys or /proc entries? /*----------------------------------------*/ Bob Bouterse Senior Software Engineer Multimedia Development Center D&M Holdings Inc. http://www.dm-holdings.com

1 0

[B.A.T.M.A.N.] Manual route manipulation
by Bouterse, Robert 18 Jan '12

18 Jan '12

Hi, I am new to the BATMAN list, and I need some help, I am running some feasibility tests on batman-adv for our use. I need to test how well it reroutes traffic when an intermediate node goes away. I need to set up a mesh in a diamond pattern, like: |---->B<----| A<--{ }--->D |---->C<----| Then find out if traffic is being routed through the B node, shutdown the B node, and see that the route "heals" to using node C instead. I was able to do this on open80211s by using the "iw station set plink_action block" command to force the A node to never communicate directly with the D node, and wireshark to verify the communications. Does anyone know of a way of doing these types of path manipulations with batman-adv? I didn't see anything in batctl that looked like it would work. Maybe there are /sys or /proc entries? /*----------------------------------------*/ Bob Bouterse Senior Software Engineer Multimedia Development Center D&M Holdings Inc. http://www.dm-holdings.com

1 0

[B.A.T.M.A.N.] [PATCH] batman-adv: TT_CLIENT_PENDING is never set in struct tt_global_entry
by Antonio Quartulli 15 Jan '12

15 Jan '12

Actually the TT_CLIENT_PENDING flag is never set in the tt_global_entry structure, therefore this code is useless and can be removed. Reported-by: Simon Wunderlich <siwu(a)hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex(a)autistici.org> --- translation-table.c | 9 +-------- 1 files changed, 1 insertions(+), 8 deletions(-) diff --git a/translation-table.c b/translation-table.c index d105cbd..27753a0 100644 --- a/translation-table.c +++ b/translation-table.c @@ -603,7 +603,7 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset) struct tt_global_entry, common); seq_printf(seq, " * %pM (%3u) via %pM (%3u) " - "[%c%c%c]\n", + "[%c%c]\n", tt_global_entry->common.addr, tt_global_entry->ttvn, tt_global_entry->orig_node->orig, @@ -613,8 +613,6 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset) (tt_global_entry->common.flags & TT_CLIENT_ROAM ? 'R' : '.'), (tt_global_entry->common.flags & - TT_CLIENT_PENDING ? 'X' : '.'), - (tt_global_entry->common.flags & TT_CLIENT_WIFI ? 'W' : '.')); } rcu_read_unlock(); @@ -838,11 +836,6 @@ struct orig_node *transtable_search(struct bat_priv *bat_priv, if (!atomic_inc_not_zero(&tt_global_entry->orig_node->refcount)) goto out; - /* A global client marked as PENDING has already moved from that - * originator */ - if (tt_global_entry->common.flags & TT_CLIENT_PENDING) - goto out; - orig_node = tt_global_entry->orig_node; out: -- 1.7.3.4

2 1

Re: [B.A.T.M.A.N.] problem with mesh network
by gtolon＠inti.gob.ar 11 Jan '12

11 Jan '12

Hi Marek, thanks for the reply. El 10/01/2012 08:00 a.m., b.a.t.m.a.n-request(a)lists.open-mesh.org escribió: > Date: Mon, 9 Jan 2012 20:22:37 +0800 > From: Marek Lindner<lindner_marek(a)yahoo.de> > To: "The list for a Better Approach To Mobile Ad-hoc Networking" > <b.a.t.m.a.n(a)lists.open-mesh.org> > Subject: Re: [B.A.T.M.A.N.] problem with mesh network > Message-ID:<201201092022.37637.lindner_marek(a)yahoo.de> > Content-Type: Text/Plain; charset="iso-8859-1" > > > Hi, > >> > We are using batman-adv 2011.2.0 with Openwrt Backfire-rc6 on D-Link >> > Dir-615 routers (2 Antennas, 1 single radio), each router with an adhoc >> > interface managed by batman-adv for the mesh network and an Acces Point >> > interface bridged with bat0 and ethernet to allow non batman-adv clients >> > to connect. The problem is that sometimes all works fine, but sometimes >> > we get very poor bitrates between routers, even using just two routers, >> > testing with iperf. We don't know where the problem is, specially >> > because it's a very erratic behavior. If any of you have used this >> > configuration with openwrt and ath9k driver we'd really appreciate some >> > help. > this does not sound like a batman issue. Did you try contacting the > ath9k/linux-wireless/openwrt developers ? Yes, we suspected it could be a TX dma problem, because occasionally we found that error in the logs, so we followed some openwrt tickets related with that, but we're not sure that's the problem, and anyway it has not been solved yet. We've also asked on ath9k list about the driver debug files in case we could find something there, but they did't answered, I guess it's hard to explain in a mail list. We haven't asked to linux-wireless, maybe it would be better, since it could be something on top of the driver. > >> > By the way, the D-Link Dir-615 is an n router, but for some reason >> > related with hostapd the ap vif gets configured in g mode, and the adhoc >> > in n mode, no matter what we set in the uci files. So in case the >> > problem were related with the adhoc and ap virtual interface, we were >> > thinking about the possibility of setting the mesh network without using >> > adhoc mode. In that case each router should have one ap for non >> > batman-adv clients, and two additional interfaces, one in ap and the >> > other managed, these two used to connect with other routers via >> > batman-adv, would that be correct? In that case, you think this >> > configuration could be more or less stable than the other using adhoc >> > mode? > batman-adv does not care how you configure your interfaces. Using managed/AP > with batman-adv on top works as well. However, you will need to configure each > managed/AP setup manually which will be cumbersome in a larger network and has > no failover. A single failure in your managed/AP chain will bring down all > nodes depending on it. We were thinking in a script that managed the stations to connect to the different APs to avoid configuring each router manually. However we realized that with just one managed interface, each router could connect to only one AP, so if we wanted that every router could connect bidirectionally to others we should use a number of managed interfaces enough to connect to all neigbours, shouldn't we? In any case it would be just another test to see if the results are different. Gabriel

2 2

Re: [B.A.T.M.A.N.] B.A.T.M.A.N Digest, Vol 61, Issue 9 (UNCLASSIFIED)
by Karan, Cem F CIV (US) 10 Jan '12

10 Jan '12

Classification: UNCLASSIFIED Caveats: NONE > Marek Lindner wrote on Mon, 9 Jan 2012 05:29:26 +0800: > > > I'm a roboticist. My current project involves creating robots that > > are mobile ad-hoc routers for a network. The robots are supposed to > > autonomously determine where to move to improve the > > bandwidth/latency/reliability/etc. of a network. In order for this to > > work, each robot needs to have a rough approximation of the topology > > of the network, so they can measure if their movements are improving > > or worsening the network. The topology information needs to include > > not just what the network is currently like (which, from the > > documentation, appears to always be a tree), but a complete graph, > > with measured information about the bandwidth/latency/reliability of > > the links between pairs of nodes. Is it possible to get this > > information from batman-adv? > > a single batman node does not have the information about all links and > their properties (bandwidth/latency/reliability) in the network. The > reason is quite > simple: The larger the mesh the more outdated your information will be. That is actually acceptable and expected. I just want the information between the one-hop neighbors to be relatively timely. The only requirement for the further away robots that I have is that if the robot positions and the world are static, then the topology information should more or less stabilize over time. Random fluctuations are OK; they can be averaged away without any trouble. Does that make sense? Thanks, Cem Karan Classification: UNCLASSIFIED Caveats: NONE

2 1

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

B.A.T.M.A.N January 2012