B.A.T.M.A.N July 2010

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

18 participants
28 discussions

[B.A.T.M.A.N.] [PATCH 0/1] Reviewing batman-adv for net/
by Sven Eckelmann 20 Jul '10

20 Jul '10

Hi, batman-adv is a layer2 meshing protocol currently in drivers/staging/batman-adv. GregKH recently [1][2] gave us his blessing to leave the staging tree and move to a more suitable location. To the best of our knowledge the net tree should be it ?! Short functionality overview: The batman-adv module is an implementation of the B.A.T.M.A.N. routing protocol operating on layer2 optimized for (but not limited to) wireless networks. Next to finding the best possible path through the network it encapsulates the data traffic and optimizes the transport as well. There also is a user space tool "batctl" which offers various functionalities next to a kernel module configuration interface. Detailed documentation can be found at the project homepage[3]. I will send a patch referencing this mail. I hope you find time to send us your opinion and ideas. Everything is addressed in the last round of comments. thanks, Sven [1] https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2010-June/002881.html [2] https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2010-June/002968.html [3] http://www.open-mesh.org

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[B.A.T.M.A.N.] Proposal: Project developement of a free phone multimedia network over WiFi in Gijón (Asturias, north Spain)
by al 16 Jul '10

16 Jul '10

This is a mail for Axel (he has a 550 error in his mail account), but it can be also a invitation for other of you :) ---- Hallo Axel, ¿cómo estás? I'm fine, here in Valldoreix, but I think that I'm going to Gijón (Asturias, north Spain) next 22th to this event: New Narratives of Mobility Workshop focused on mobile devices, experimental TV and the production of new narratives. at LABoral Centro de Arte y Creación Industrial http://www.laboralcentrodearte.org/profesionales/proximos/66 I sent a project called /Developement of a free phone multimedia network over WiFi/ and it will work over Alix nodes with BMX protocol. I would like that you was there if you want. We can host you in Gijón Center and maybe we can pay you the travel. For this we need that you fill in this form (just today, last day, I'm sorry): http://www2.laboralcentrodearte.org/article/convocatoria_de_colaboradores_s… Thanks for all, I hope see you in Gijón!

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[B.A.T.M.A.N.] multiple mesh clouds (2)
by Marek Lindner 11 Jul '10

11 Jul '10

Hi, here we go with the next batch which has been rebased on the latest trunk and is checkpatch clean. Cheers, Marek

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[B.A.T.M.A.N.] batman adv unicast fragmentation (version 5)
by Andreas Langer 11 Jul '10

11 Jul '10

Hi, i changed a few things as noted. In fragmentation.c search_frag_packet, i reduced the goto labels to one and a packet with the same seqno will continue to be replaced. The rest was implemented as indicated. regards, Andreas

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[B.A.T.M.A.N.] [PATCH] batman-adv: fix 64 bit counters on 32 bit arches
by Sven Eckelmann 11 Jul '10

11 Jul '10

From: Eric Dumazet <eric.dumazet(a)gmail.com> There is a small possibility that a reader gets incorrect values on 32 bit arches. SNMP applications could catch incorrect counters when a 32bit high part is changed by another stats consumer/provider. One way to solve this is to add a rtnl_link_stats64 param to all ndo_get_stats64() methods, and also add such a parameter to dev_get_stats(). Rule is that we are not allowed to use dev->stats64 as a temporary storage for 64bit stats, but a caller provided area (usually on stack) Old drivers (only providing get_stats() method) need no changes. Signed-off-by: Eric Dumazet <eric.dumazet(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> [sven.eckelmann(a)gmx.de: Added compat.h defines for pre-2.6.36 kernels] Signed-off-by: Sven Eckelmann <sven.eckelmann(a)gmx.de> --- This patch entered net-next-2.6 today. It is also part of maint and must be applied in trunk too. The original commit can be found using its SHA1 28172739f0a276eb8d6ca917b3974c2edb036da3. batman-adv/compat.h | 8 ++++++++ batman-adv/hard-interface.c | 3 ++- 2 files changed, 10 insertions(+), 1 deletions(-) diff --git a/batman-adv/compat.h b/batman-adv/compat.h index 09016c8..103593d 100644 --- a/batman-adv/compat.h +++ b/batman-adv/compat.h @@ -249,4 +249,12 @@ static inline struct net_device_stats *dev_get_stats(struct net_device *dev) #endif /* < KERNEL_VERSION(2, 6, 29) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) + +#define dev_get_stats(x, y) dev_get_stats(x) + +#define rtnl_link_stats64 rtnl_link_stats __attribute__((unused)) + +#endif /* < KERNEL_VERSION(2, 6, 36) */ + #endif /* _NET_BATMAN_ADV_COMPAT_H_ */ diff --git a/batman-adv/hard-interface.c b/batman-adv/hard-interface.c index 5ff9dcb..6a37c33 100644 --- a/batman-adv/hard-interface.c +++ b/batman-adv/hard-interface.c @@ -445,6 +445,7 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev, struct batman_packet *batman_packet; struct batman_if *batman_if; struct net_device_stats *stats; + struct rtnl_link_stats64 temp; int ret; skb = skb_share_check(skb, GFP_ATOMIC); @@ -480,7 +481,7 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev, if (batman_if->if_status != IF_ACTIVE) goto err_free; - stats = (struct net_device_stats *)dev_get_stats(skb->dev); + stats = (struct net_device_stats *)dev_get_stats(skb->dev, &temp); if (stats) { stats->rx_packets++; stats->rx_bytes += skb->len; -- 1.7.1

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[B.A.T.M.A.N.] multiple mesh clouds
by Marek Lindner 11 Jul '10

11 Jul '10

Hi folks, we already had quite some patches going into batman-adv to allow concurrent meshes on the same device. I'm happy to announce that this is the final batch which will unlock this feature. As you can see it is a lot of code that needs to be reviewed and tested. On my testbed it works quite well but nearly all subsystems are affected, so I expect more bugs to materialize. Please give it a try and let me know what you think. Regards, Marek

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[B.A.T.M.A.N.] Staging: batman-adv for 2.6.36 (2)
by Sven Eckelmann 10 Jul '10

10 Jul '10

Hi, here are patches targetted for 2.6.36. All patches needed for that patchset are already part of your staging-next tree. All patches are cleanup patches and no new feature is added. thanks, Sven Antonio Quartulli (1): Staging: batman-adv: Convert names from Java to C style Linus Lüssing (1): Staging: batman-adv: Avoid rounding issues for local hna timeout Marek Lindner (4): Staging: batman-adv: replace manual calculation by msecs_to_jiffies() for better readability Staging: batman-adv: Add sysfs abi documentation about bonding Staging: batman-adv: adapting source version to revised versioning scheme Staging: batman-adv: fix early debugfs deinitialization Simon Wunderlich (1): Staging: batman-adv: Lower resolution for timeouts Sven Eckelmann (1): Staging: batman-adv: Add include guards to all header files drivers/staging/batman-adv/aggregation.h | 5 +++++ drivers/staging/batman-adv/bat_debugfs.h | 6 +++--- drivers/staging/batman-adv/bat_sysfs.h | 6 +++--- drivers/staging/batman-adv/bitarray.h | 4 ++++ drivers/staging/batman-adv/hard-interface.h | 5 +++++ drivers/staging/batman-adv/hash.h | 8 +++++--- drivers/staging/batman-adv/icmp_socket.h | 5 +++++ drivers/staging/batman-adv/main.c | 4 ++-- drivers/staging/batman-adv/main.h | 13 +++++++++---- drivers/staging/batman-adv/originator.c | 6 ++---- drivers/staging/batman-adv/originator.h | 5 +++++ drivers/staging/batman-adv/packet.h | 5 +++++ drivers/staging/batman-adv/ring_buffer.h | 5 +++++ drivers/staging/batman-adv/routing.c | 6 +++--- drivers/staging/batman-adv/routing.h | 5 +++++ drivers/staging/batman-adv/send.c | 14 +++++++------- drivers/staging/batman-adv/send.h | 5 +++++ drivers/staging/batman-adv/soft-interface.c | 6 +++--- drivers/staging/batman-adv/soft-interface.h | 7 ++++++- drivers/staging/batman-adv/sysfs-class-net-mesh | 8 ++++++++ drivers/staging/batman-adv/translation-table.c | 3 +-- drivers/staging/batman-adv/translation-table.h | 5 +++++ drivers/staging/batman-adv/types.h | 6 +++--- drivers/staging/batman-adv/vis.c | 14 +++++++------- drivers/staging/batman-adv/vis.h | 7 ++++++- 25 files changed, 117 insertions(+), 46 deletions(-)

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[B.A.T.M.A.N.] The great #batdroid hackathon of July 2010
by Antoine van Gelder 09 Jul '10

09 Jul '10

Heya folks, Over the weekend a team consisting of Tatenda Chipeperekwa, Veenesh Jeena, Zaheer Abrahams from the UCT Honors program as well as YoursTruly succeeded in writing an App which allows anyone with a rooted Android handset to connect to a B.A.T.M.A.N. mesh network. Work began on Saturday morning by bringing up a simple mesh testbed consisting of a Mesh Potato, an Ubiquity NS2 and a Linksys WRT54GL. The rest of the day was spent manually configuring the test phones into AdHoc mode and bringing the batmand mesh routing daemon up on both a HTC Magic & a HTC Legend. After working our way through the traditional hacker supper of pizza and soft drinks we started the hard work that would consume us for the rest of the weekend, namely writing an App which could: a) reliably b) on any Android handset ...take the phone in&out of AdHoc mode and start&stop the B.A.T.M.A.N. mesh routing daemon. What complicates this is that by default the Android software distribution does not support AdHoc WiFi mode, to further complicate matters is that the process to force the phones into AdHoc mode differs for almost every different handset model! OhNoes!!! Fortunately the team of pure stupendous at http://code.google.com/p/android-wifi-tether/, by releasing their work under GPL3, have saved the collective posteriors of the community by having done a staggering amount of work developing the scripts & code which take away 99% of the pain from this process. If anyone is in a position to call shots on this, please do consider contributing a cash donation, filing some bugs or a bit of hacking time to the android-wifi-tether project because their work has been absolutely key to the team being able to bring B.A.T.M.A.N. up on Android in only a weekend instead of a month of hacking followed by months and months of testing and refinement. The rest of the evening and the next day was spent writing the App front-end integrating the batmand daemon with the android-wifi-tether code, banging on user interface design, conspicuous caffeine consumption and general wizardry until, some time round eight'o'clock on Sunday evening all the pieces finally came together and the team were able to demonstrate a running B.A.T.D.R.O.I.D. on the mesh testbed! The code from the weekend is available at: http://code.google.com/p/android-batdroid/ Downloadable binaries to follow. There are also some photos from the weekend up at: http://www.flickr.com/photos/45478359@N06/sets/72157624433728942/ Finally, mad props to: Neels from the Open Innovation Studio (http://www.bym.co.za/projects/open-innovation-studio/) for creating a beautiful space with stunning energy, amazing coffee and generously sharing it with us for the weekend. Steve Song from VillageTelco (http://www.villagetelco.org) & Shuttleworth Fondation (http://www.shuttleworthfoundation.org) for the support that made the weekend possible. - antoine -- http://7degrees.co.za "Libré software for human education"

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[B.A.T.M.A.N.] Batman advanced and internet gateways
by Clemens John 07 Jul '10

07 Jul '10

Hi, I know I asked this question some time ago but I didn´t got it till now so I have to ask again. I know that Batman advanced does the meshing on layer 2 and has nothing to do with layer 3. We have a wonderfull working Batman advanced network now which we use with IPv4. Communication inside the networks works verry well and everything is fine. Now I want to go from the Batman advanced mesh network to the internet. Therefor we have several gateways which I can use to get into the internet. To use one of the gateways, I only have to set the default route of the mesh- client to the gateways IPv4 address. How can I do this automatically and how can I automatically choose the best gateway for my client? I know that Batman advanced does not do this for now but I already saw something that sounded like made for this in the trunk version and on the manpage of batctl. The function is called gw_mode. *How do you this? *What do you recommend for this task? *What´s about the funktion in trunk? Is the function made for this? **If so why do you mix Layer 2 and Layer 3 now? **When do you think this function will be in the stable release? Sorry for so many questions but I´m a bit confused^^ Clemens

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[B.A.T.M.A.N.] batman adv unicast fragmentation (version 4)
by Andreas Langer 07 Jul '10

07 Jul '10

Hi, i changed the packet type to the old order and add fragmented at the end. So that other programs not need to be adjusted. regards, andreas

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B.A.T.M.A.N July 2010