B.A.T.M.A.N August 2011

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

30 participants
27 discussions

[B.A.T.M.A.N.] [PATCH] batman-adv: readme update (mention ap isolation and new log level)
by Marek Lindner 09 Nov '11

09 Nov '11

Signed-off-by: Marek Lindner <lindner_marek(a)yahoo.de> --- README | 13 +++++++------ 1 files changed, 7 insertions(+), 6 deletions(-) diff --git a/README b/README index a9ae038..7bcc9f4 100644 --- a/README +++ b/README @@ -83,9 +83,9 @@ All mesh wide settings can be found in batman's own interface folder: # ls /sys/class/net/bat0/mesh/ -# aggregated_ogms gw_bandwidth hop_penalty -# bonding gw_mode orig_interval -# fragmentation gw_sel_class vis_mode +# aggregated_ogms fragmentation gw_sel_class vis_mode +# ap_isolation gw_bandwidth hop_penalty +# bonding gw_mode orig_interval There is a special folder for debugging information: @@ -219,15 +219,16 @@ abled during run time. Following log_levels are defined: 0 - All debug output disabled 1 - Enable messages related to routing / flooding / broadcasting -2 - Enable route or tt entry added / changed / deleted -3 - Enable all messages +2 - Enable messages related to route added / changed / deleted +4 - Enable messages related to translation table operations +7 - Enable all messages The debug output can be changed at runtime using the file /sys/class/net/bat0/mesh/log_level. e.g. # echo 2 > /sys/class/net/bat0/mesh/log_level -will enable debug messages for when routes or TTs change. +will enable debug messages for when routes change. BATCTL -- 1.7.5.3

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[B.A.T.M.A.N.] openwrt lib/batman-adv/config.sh
by Filippo Sallemi 30 Oct '11

30 Oct '11

Hi all, i thought it was a good idea to move the functions "start_mesh" and "stop_mesh" from /etc/init.d/batman-adv script to a new file in openwrt style "/lib/batman-adv/config.sh". With this improvment it possible to recycle this two function to operate with an hotplug script so when network restart, all batman interface will be reconfigured automatically and I just work to do this. In this mail you can find batman-adv initscript updated to work in this way and the batman-adv library file that must be located in /lib/batman-adv/. Any comment are apprecciated -- Filippo Sallemi

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[B.A.T.M.A.N.] batman-adv 2011.2.0 hop somtimes does not work
by Tobias 19 Oct '11

19 Oct '11

Hi all, i have setup a mesh-network with batman-adv running on about 10 Foneras and 4 TP-Link on OpenWRT. At first everything seemed to work. A node on the one end could ping a node on the other end over the mesh-network. The ping was hopping from node to node as expected. But sometimes some paths do not work anymore. Some nodes can only reach their direct neighbors via a "normal ping". A ping to a node via one hop does not work. A "batctl ping" does work! This only happens to parts of the network and is not permanent. If i wait it will recover, but then the problem appears at another node. dmesg or the syslog does not report any errors. Can anyone give me a hint where to look? Tobias

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[B.A.T.M.A.N.] Batman-adv secure
by Filippo Sallemi 05 Oct '11

05 Oct '11

Hi all, I don't known if this is a old argument but exsist the possibility to implement a secure mesh network? For example a tecnique that crypt batman-adv traffic with a preshare key or similar or using ebtables to block all INPUT and OUTPUT traffic and allow only the specified nodes mac? Rgds -- Filippo Sallemi

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[B.A.T.M.A.N.] [PATCH 00/24] net: Remove unnecessary OOM logging messages
by Joe Perches 30 Aug '11

30 Aug '11

Remove all the site-specific OOM messages because they duplicate the MM subsystem generic OOM message. Saves ~.2% (~2.5kb) of code/text in an x86 defconfig $ size net/built-in.o*defconfig text data bss dec hex filename 1506772 58652 34928 1600352 186b60 net/built-in.o.new.defconfig 1509144 58652 34928 1602724 1874a4 net/built-in.o.old.defconfig $ size net/built-in.o*allyesconfig text data bss dec hex filename 7655361 275361 2062352 9993074 987b72 net/built-in.o.new.allyesconfig 7667400 275649 2064024 10007073 98b221 net/built-in.o.old.allyesconfig Joe Perches (24): 802: Remove unnecessary OOM logging messages 9p: Remove unnecessary OOM logging messages atm: Remove unnecessary OOM logging messages ax25: Remove unnecessary OOM logging messages batman-adv: Remove unnecessary OOM logging messages netfilter: Remove unnecessary OOM logging messages net: Remove unnecessary OOM logging messages ceph: Remove unnecessary OOM logging messages decnet: Remove unnecessary OOM logging messages econet: Remove unnecessary OOM logging messages iucv: Remove unnecessary OOM logging messages mac80211: Remove unnecessary OOM logging messages netrom: Remove unnecessary OOM logging messages rds: Remove unnecessary OOM logging messages rfkill: Remove unnecessary OOM logging messages rose: Remove unnecessary OOM logging messages sched: Remove unnecessary OOM logging messages sctp: Remove unnecessary OOM logging messages sunrpc: Remove unnecessary OOM logging messages tipc: Remove unnecessary OOM logging messages wanrouter: Remove unnecessary OOM logging messages wireless: Remove unnecessary OOM logging messages x25: Remove unnecessary OOM logging messages net: Remove unnecessary OOM logging messages net/802/tr.c | 1 - net/9p/client.c | 7 +---- net/9p/trans_virtio.c | 6 +---- net/atm/lec.c | 4 +-- net/atm/mpc.c | 17 ++++---------- net/atm/mpoa_caches.c | 8 +----- net/ax25/ax25_dev.c | 5 +-- net/ax25/ax25_out.c | 8 +++--- net/ax25/ax25_route.c | 5 +-- net/batman-adv/hard-interface.c | 5 +--- net/batman-adv/main.c | 2 - net/batman-adv/originator.c | 16 +++---------- net/batman-adv/soft-interface.c | 4 +-- net/batman-adv/vis.c | 4 +-- net/bridge/netfilter/ebt_ulog.c | 7 ++--- net/can/af_can.c | 6 +--- net/ceph/messenger.c | 5 +--- net/ceph/msgpool.c | 6 +---- net/core/dev.c | 25 ++++++---------------- net/core/flow.c | 4 +-- net/core/pktgen.c | 5 +--- net/decnet/dn_neigh.c | 6 ----- net/econet/af_econet.c | 4 +-- net/ipv4/netfilter/ipt_CLUSTERIP.c | 1 - net/ipv4/netfilter/ipt_ULOG.c | 4 +-- net/ipv4/netfilter/nf_nat_snmp_basic.c | 22 +----------------- net/ipv6/netfilter/nf_conntrack_reasm.c | 7 ++--- net/iucv/iucv.c | 5 +-- net/mac80211/agg-rx.c | 19 +--------------- net/mac80211/agg-tx.c | 35 +++++++----------------------- net/mac80211/debugfs.c | 3 ++ net/mac80211/ht.c | 6 +---- net/mac80211/mesh.c | 5 +-- net/mac80211/mlme.c | 17 ++++---------- net/mac80211/spectmgmt.c | 6 +---- net/mac80211/tx.c | 17 ++++---------- net/mac80211/util.c | 11 ++------- net/mac80211/work.c | 6 +--- net/netfilter/ipset/ip_set_core.c | 4 +-- net/netfilter/ipvs/ip_vs_core.c | 5 +-- net/netfilter/ipvs/ip_vs_ctl.c | 18 +++++---------- net/netfilter/ipvs/ip_vs_dh.c | 5 +-- net/netfilter/ipvs/ip_vs_lblc.c | 9 ++----- net/netfilter/ipvs/ip_vs_lblcr.c | 13 +++-------- net/netfilter/ipvs/ip_vs_proto.c | 5 +-- net/netfilter/ipvs/ip_vs_sh.c | 5 +-- net/netfilter/ipvs/ip_vs_wrr.c | 5 +-- net/netfilter/nf_conntrack_core.c | 5 +--- net/netfilter/nfnetlink_log.c | 7 +---- net/netfilter/xt_IDLETIMER.c | 2 - net/netfilter/xt_hashlimit.c | 5 +--- net/netrom/af_netrom.c | 8 +----- net/rds/ib_rdma.c | 1 - net/rds/iw_rdma.c | 8 +------ net/rds/iw_send.c | 8 +----- net/rfkill/rfkill-regulator.c | 1 - net/rose/af_rose.c | 1 - net/sched/act_api.c | 6 +--- net/sched/sch_atm.c | 1 - net/sctp/protocol.c | 3 -- net/socket.c | 5 +--- net/sunrpc/auth_gss/gss_krb5_crypto.c | 10 +------- net/sunrpc/auth_gss/gss_krb5_mech.c | 2 - net/sunrpc/backchannel_rqst.c | 9 ++----- net/sunrpc/clnt.c | 3 -- net/sunrpc/rpc_pipe.c | 3 +- net/sunrpc/rpcb_clnt.c | 2 - net/sunrpc/xprtrdma/svc_rdma.c | 8 +----- net/sunrpc/xprtrdma/transport.c | 5 +--- net/sunrpc/xprtrdma/verbs.c | 14 ------------ net/sunrpc/xprtsock.c | 5 +--- net/tipc/link.c | 4 +-- net/wanrouter/wanmain.c | 8 +------ net/wireless/lib80211_crypt_ccmp.c | 2 - net/wireless/lib80211_crypt_tkip.c | 4 --- net/wireless/lib80211_crypt_wep.c | 4 --- net/wireless/util.c | 5 +-- net/x25/x25_dev.c | 10 +++----- 78 files changed, 137 insertions(+), 415 deletions(-) -- 1.7.6.405.gc1be0

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Re: [B.A.T.M.A.N.] Comments on Lifenet?
by Sven Eckelmann 27 Aug '11

27 Aug '11

On Friday 26 August 2011 15:32:37 Hrushi Mehendale wrote: > Hi Sven, > > Thank you very much for your frank comments about the code. Another comment about your mail: Don't send html to the mailing list... it will be dropped. > Hopefully, with help from experienced programmers such as you and many > others whom we may not even know, we would be able to improve the code > quality. The prototype is just out of our research lab and as you pointed > out, the code needs to be fine tuned now. Apart from building the prototype, > majority of our efforts have been spent on porting LifeNet across different > hardware and OS platforms, in order to validate our baseline claims of > hardware and OS interoperability. I doubt that it has something to do with fine tuning. There are just simple things which you should not do: For example accessing memory after you free'd the memory region. > Do you have any suggestions for us to facilitate better interaction with the > community, particularly to make sure LifeNet adhers to best programming > practices / standards? A nasty comment would be: learn coding But honestly, you should get in contact with good kernel programmer which can work for you. It is not a "community" thing, but understanding what you are actually doing. I think those papers are a good example. You seem to understand your problem and try to find a solution. But the problem is that you are not the persons which understand the actual implementation stuff. So maybe there is a operating system department at your university which has experienced people and can help to implement your ideas. Not that I have a problem with research code... but selling it to organisations and knowing that it has ugly bugs seems not to be a good idea (at least from my point of view). Kind regards, Sven

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[B.A.T.M.A.N.] Avahi/zeroconf on batman-adv 2011.1.0
by Max Ip 26 Aug '11

26 Aug '11

Hi, I have batman-adv 2011.1.0 on two machines connected via wifi in adhoc mode. As expected the bat0 virtual interface can be configured to set an ipv4 address. I used ifconfig bat0 10.42.43.1 and ifcondif bat0 10.42.43.2 on two machines. However, the documentation says that bat0 can be assigned Avahi/zeroconf. Could anyone give me an idea how to assign via Avahi/zeroconf. Max

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[B.A.T.M.A.N.] A case for batman-11s
by Javier Cardona 25 Aug '11

25 Aug '11

Hi batman developers, Clara Gnos suggested that I write to the list to make a case for batman + 802.11s integration. As you probably know, 802.11s is the upcoming wireless mesh standard from IEEE. The current version of the draft was approved by the IEEE 802 Executive Committee in July and will be ratified next month. open80211s (http://o11s.org) is an open implementation of 802.11s that's in the kernel mainline since 2.6.26. 802.11s uses HWMP as its default routing (path selection, in 11s-speak) protocol. All 11s implementations must support this default, and this is what's implemented in open80211s. The 11s spec also defines an extensible framework to support other path selection protocols and custom metrics. open80211s supports these by providing userspace hooks for custom path selection daemons. Which brings me to the main point of my e-mail: is anyone out there interested in porting batman's path selection algorithm into open80211s? The benefits: 1. By being based on a standard, you'll know you won't be colliding with other layer 2 technologies (for instance, no need to define your own ethertype) 2. You can leverage most of open80211s, from test tools to wireshark patches. 3. By being integrated in the kernel's 802.11 stack, you can take advantage of the development that's taking place there, from encrypted management frames to HT support. 4. You can reach out to a larger development community and raise awareness about batman. 5. A big problem in mesh adoption on Linux is not the mesh protocol itself but the absence of simple to use configuration tools (e.g. no mesh support in ConnMan, NetworkManager, etc.). By providing a unified wireless mesh framework we increase the likelihood of having some support at the distro level. and last, but not least... 6. You'll be able to say authoritatively that batman is X times more efficient than HWMP (pick any X greater than 1 :) Anyway, that was just a thought. If anyone is interested let me know. Cheers, Javier -- Javier Cardona cozybit Inc. http://www.cozybit.com

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Re: [B.A.T.M.A.N.] A case for batman-11s
by Andrew Lunn 25 Aug '11

25 Aug '11

On Thu, Aug 25, 2011 at 09:36:14AM +0800, Yeoh Chun-Yeow wrote: > Hi, all, > > Although batman-adv is a layer 2 routing that works across multiple access > technologies (not so sure about other technologies, because it mainly use > for WiFi), but it only make senses if we configure the wireless interface > operating in adhoc or adhocdemo mode. If we configure the wireless interface > as Infrastructure mode, all the traffic will go to the AP first, even if we > can direct communicate between the two STAs. > > Correct me if I am wrong. Ideally, you have BATMAN on the AP as well as the STA. So you never do STA->AP->STA hops between BATMAN nodes, you only do a STA->AP BATMAN hop followed by a AP->STA BATMAN hop. Performing two BATMAN hops means BATMAN knows the transmit quality of each of the two wireless hop, not the combined transmit quality of the STA->AP->STA path. So BATMAN running on the AP can then decide if it makes sense to take a different path. There is code to enforce this, i.e. blocking STA->AP->STA transfers, in the development tree and it has been push upstream to be included in the mainline kernel. Andrew

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[B.A.T.M.A.N.] pull request: batman-adv 2011-08-24
by Marek Lindner 25 Aug '11

25 Aug '11

Hi, the following 8 patches constitute the first batch I'd like to get the pulled into net-next-2.6/3.2. They bring a new feature (AP isolation on the mesh layer), some minor cleanups, spelling fixes and some additional debugfs output. Thanks, Marek The following changes since commit 322a8b034003c0d46d39af85bf24fee27b902f48: Linux 3.1-rc1 (2011-08-07 18:23:30 -0700) are available in the git repository at: git://git.open-mesh.org/linux-merge.git batman-adv/next Antonio Quartulli (6): batman-adv: hash_add() has to discriminate on the return value batman-adv: correct several typ0s in the comments batman-adv: detect clients connected through a 802.11 device batman-adv: implement AP-isolation on the receiver side batman-adv: implement AP-isolation on the sender side batman-adv: print client flags in the local/global transtables output Marek Lindner (2): batman-adv: reuse tt_len() to calculate tt buffer length batman-adv: merge update_transtable() into tt related code Documentation/ABI/testing/sysfs-class-net-mesh | 8 + net/batman-adv/aggregation.h | 3 +- net/batman-adv/bat_sysfs.c | 2 + net/batman-adv/bitarray.c | 6 +- net/batman-adv/gateway_client.c | 10 +- net/batman-adv/hard-interface.c | 34 ++++- net/batman-adv/hard-interface.h | 1 + net/batman-adv/hash.h | 25 +++- net/batman-adv/main.c | 2 +- net/batman-adv/main.h | 6 +- net/batman-adv/originator.c | 2 +- net/batman-adv/packet.h | 1 + net/batman-adv/routing.c | 77 +-------- net/batman-adv/send.c | 10 +- net/batman-adv/soft-interface.c | 13 +- net/batman-adv/translation-table.c | 199 ++++++++++++++++++++---- net/batman-adv/translation-table.h | 21 ++-- net/batman-adv/types.h | 5 +- net/batman-adv/unicast.c | 6 +- net/batman-adv/unicast.h | 2 +- net/batman-adv/vis.c | 6 +- 21 files changed, 291 insertions(+), 148 deletions(-)

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B.A.T.M.A.N August 2011