B.A.T.M.A.N March 2012

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

22 participants
30 discussions

[B.A.T.M.A.N.] [PATCH] batman-adv: Use eth_hw_addr_random compat also for kernel 3.3
by Sven Eckelmann 28 Mar '12

28 Mar '12

The changes for eth_hw_addr_random were not merged in linux 3.3. Therefore, the compat layer has to provide it. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- compat.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/compat.h b/compat.h index 46de8b0..92379ef 100644 --- a/compat.h +++ b/compat.h @@ -132,13 +132,13 @@ void free_rcu_backbone_gw(struct rcu_head *rcu); #endif /* < KERNEL_VERSION(3, 0, 0) */ -#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0) +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0) static inline void eth_hw_addr_random(struct net_device *dev) { random_ether_addr(dev->dev_addr); } -#endif /* < KERNEL_VERSION(3, 0, 0) */ +#endif /* < KERNEL_VERSION(3, 4, 0) */ #endif /* _NET_BATMAN_ADV_COMPAT_H_ */ -- 1.7.9.1

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[B.A.T.M.A.N.] [PATCH] batman-adv: use shorter pr_warn instead of pr_warning
by Sven Eckelmann 28 Mar '12

28 Mar '12

Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- compat.h | 7 +++++++ hard-interface.c | 4 ++-- send.c | 2 +- 3 files changed, 10 insertions(+), 3 deletions(-) diff --git a/compat.h b/compat.h index 95b8706..f2cf35b 100644 --- a/compat.h +++ b/compat.h @@ -57,6 +57,13 @@ #endif /* < KERNEL_VERSION(2, 6, 34) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35) + +#define pr_warn pr_warning + +#endif /* < KERNEL_VERSION(2, 6, 35) */ + + #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31) diff --git a/hard-interface.c b/hard-interface.c index 3778977..7db9636 100644 --- a/hard-interface.c +++ b/hard-interface.c @@ -175,9 +175,9 @@ static void check_known_mac_addr(const struct net_device *net_dev) net_dev->dev_addr)) continue; - pr_warning("The newly added mac address (%pM) already exists on: %s\n", + pr_warn("The newly added mac address (%pM) already exists on: %s\n", net_dev->dev_addr, hard_iface->net_dev->name); - pr_warning("It is strongly recommended to keep mac addresses unique to avoid problems!\n"); + pr_warn("It is strongly recommended to keep mac addresses unique to avoid problems!\n"); } rcu_read_unlock(); } diff --git a/send.c b/send.c index af7a674..8ec33b0 100644 --- a/send.c +++ b/send.c @@ -45,7 +45,7 @@ int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface, goto send_skb_err; if (!(hard_iface->net_dev->flags & IFF_UP)) { - pr_warning("Interface %s is not up - can't send packet via that interface!\n", + pr_warn("Interface %s is not up - can't send packet via that interface!\n", hard_iface->net_dev->name); goto send_skb_err; } -- 1.7.9.1

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[B.A.T.M.A.N.] batman-adv load module patch
by HeXiLeD 28 Mar '12

28 Mar '12

I have been trying to apply the patch which tries to fix the openwrt scripts in regards having batman-adv to bring up all it's attached interfaces but something seems not to be working. Patch ------------------------------------------------------------------------ --- a/batman-adv/files/lib/batman-adv/config.sh (revision 30804) +++ b/batman-adv/files/lib/batman-adv/config.sh (working copy) @@ -1,6 +1,15 @@ #!/bin/sh -bat_config(){ +bat_load_module() +{ + [ -d "/sys/module/batman_adv/" ] && return + + . /etc/functions.sh + load_modules /etc/modules.d/*-lib-crc16 /etc/modules.d/*-batman-adv +} + +bat_config() +{ local mesh="$1" local aggregated_ogms bonding fragmentation gw_bandwidth gw_mode gw_sel_class log_level orig_interval hop_penalty vis_mode @@ -30,7 +39,8 @@ } -bat_add_interface(){ +bat_add_interface() +{ local mesh="$1" local interface="$2" local interfaces @@ -47,7 +57,8 @@ done } -bat_del_interface(){ +bat_del_interface() +{ local mesh="$1" local interface="$2" local interfaces --- a/batman-adv/files/usr/sbin/batman-adv (revision 30804) +++ b/batman-adv/files/usr/sbin/batman-adv (working copy) @@ -26,6 +26,7 @@ # can also be used with "batman-adv start bat0" start() { + bat_load_module config_load batman-adv if [ -n "$1" ]; then --- a/batman-adv/files/etc/hotplug.d/net/99-batman-adv (revision 30804) +++ b/batman-adv/files/etc/hotplug.d/net/99-batman-adv (working copy) @@ -2,6 +2,7 @@ . /lib/batman-adv/config.sh +bat_load_module config_load batman-adv case "$ACTION" in ------------------------------------------------------------------------ The patch should be working with my current revision: URL: svn://svn.openwrt.org/openwrt/branches/backfire Repository Root: svn://svn.openwrt.org/openwrt Repository UUID: 3c298f89-4303-0410-b956-a3cf2f4a3e73 Revision: 31071 Node Kind: directory Schedule: normal Last Changed Author: jow Last Changed Rev: 30898 Last Changed Date: 2012-03-11 22:09:16 -0400 (Sun, 11 Mar 2012) As it seemed to be for 30313 https://dev.openwrt.org/browser/branches/packages_10.03.2/net/batman-adv/fi… However it fails Path: OPENWRT/backfire/feeds/packages/net/batman-adv/files/etc/hotplug.d/net/99-batman-adv ------------------------------------------------------------------------ $ patch -p2 < batman-adv_load-module-when-needed.patch 99-batman-adv patching file 99-batman-adv Hunk #1 FAILED at 1. Hunk #2 FAILED at 30. Hunk #3 FAILED at 47. 3 out of 3 hunks FAILED -- saving rejects to file 99-batman-adv.rej patching file 99-batman-adv Hunk #1 FAILED at 26. 1 out of 1 hunk FAILED -- saving rejects to file 99-batman-adv.rej patching file 99-batman-adv $ patch -p1< batman-adv_load-module-when-needed.patch can't find file to patch at input line 3 Perhaps you used the wrong -p or --strip option? The text leading up to this was: -------------------------- |--- a/batman-adv/files/lib/batman-adv/config.sh (revision 30804) |+++ b/batman-adv/files/lib/batman-adv/config.sh (working copy) -------------------------- File to patch: 99-batman-adv patching file 99-batman-adv Hunk #1 FAILED at 1. Hunk #2 FAILED at 30. Hunk #3 FAILED at 47. 3 out of 3 hunks FAILED -- saving rejects to file 99-batman-adv.rej can't find file to patch at input line 42 Perhaps you used the wrong -p or --strip option? The text leading up to this was: -------------------------- |--- a/batman-adv/files/usr/sbin/batman-adv (revision 30804) |+++ b/batman-adv/files/usr/sbin/batman-adv (working copy) Changing the patch number and increasing it does not work. ------------------------------------------------------------------------ 99-batman-adv.rej $ cat 99-batman-adv.rej --- batman-adv/files/lib/batman-adv/config.sh (revision 30804) +++ batman-adv/files/lib/batman-adv/config.sh (working copy) @@ -1,6 +1,15 @@ #!/bin/sh -bat_config(){ +bat_load_module() +{ + [ -d "/sys/module/batman_adv/" ] && return + + . /etc/functions.sh + load_modules /etc/modules.d/*-lib-crc16 /etc/modules.d/*-batman-adv +} + +bat_config() +{ local mesh="$1" local aggregated_ogms bonding fragmentation gw_bandwidth gw_mode gw_sel_class log_level orig_interval hop_penalty vis_mode @@ -30,7 +39,8 @@ } -bat_add_interface(){ +bat_add_interface() +{ local mesh="$1" local interface="$2" local interfaces @@ -47,7 +57,8 @@ done } -bat_del_interface(){ +bat_del_interface() +{ local mesh="$1" local interface="$2" local interfaces ------------------------------------------------------------------------ Solutions?

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[B.A.T.M.A.N.] [PATCH 1/4] batman-adv: prepare lq_update_lock to be shared among different protocols
by Marek Lindner 20 Mar '12

20 Mar '12

Signed-off-by: Marek Lindner <lindner_marek(a)yahoo.de> --- bat_iv_ogm.c | 9 ++++----- originator.c | 1 + types.h | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/bat_iv_ogm.c b/bat_iv_ogm.c index 85617c4..fa41307 100644 --- a/bat_iv_ogm.c +++ b/bat_iv_ogm.c @@ -43,7 +43,6 @@ static struct neigh_node *bat_iv_ogm_neigh_new(struct hard_iface *hard_iface, goto out; INIT_LIST_HEAD(&neigh_node->bonding_list); - spin_lock_init(&neigh_node->tq_lock); neigh_node->orig_node = orig_neigh; neigh_node->if_incoming = hard_iface; @@ -638,12 +637,12 @@ static void bat_iv_ogm_orig_update(struct bat_priv *bat_priv, if (is_duplicate) continue; - spin_lock_bh(&tmp_neigh_node->tq_lock); + spin_lock_bh(&tmp_neigh_node->lq_update_lock); ring_buffer_set(tmp_neigh_node->tq_recv, &tmp_neigh_node->tq_index, 0); tmp_neigh_node->tq_avg = ring_buffer_avg(tmp_neigh_node->tq_recv); - spin_unlock_bh(&tmp_neigh_node->tq_lock); + spin_unlock_bh(&tmp_neigh_node->lq_update_lock); } if (!neigh_node) { @@ -669,12 +668,12 @@ static void bat_iv_ogm_orig_update(struct bat_priv *bat_priv, orig_node->flags = batman_ogm_packet->flags; neigh_node->last_seen = jiffies; - spin_lock_bh(&neigh_node->tq_lock); + spin_lock_bh(&neigh_node->lq_update_lock); ring_buffer_set(neigh_node->tq_recv, &neigh_node->tq_index, batman_ogm_packet->tq); neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv); - spin_unlock_bh(&neigh_node->tq_lock); + spin_unlock_bh(&neigh_node->lq_update_lock); if (!is_duplicate) { orig_node->last_ttl = batman_ogm_packet->header.ttl; diff --git a/originator.c b/originator.c index 4432d64..30889c9 100644 --- a/originator.c +++ b/originator.c @@ -99,6 +99,7 @@ struct neigh_node *neigh_node_new(struct hard_iface *hard_iface, INIT_HLIST_NODE(&neigh_node->list); memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); + spin_lock_init(&neigh_node->lq_update_lock); /* extra reference for return */ atomic_set(&neigh_node->refcount, 2); diff --git a/types.h b/types.h index 04d6cf5..15f538a 100644 --- a/types.h +++ b/types.h @@ -151,7 +151,7 @@ struct neigh_node { struct rcu_head rcu; struct orig_node *orig_node; struct hard_iface *if_incoming; - spinlock_t tq_lock; /* protects: tq_recv, tq_index */ + spinlock_t lq_update_lock; /* protects: tq_recv, tq_index */ }; #ifdef CONFIG_BATMAN_ADV_BLA -- 1.7.9.1

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[B.A.T.M.A.N.] [PATCH] batctl: tcpdump - display new not_best_hop_flag when parsing OGMs
by Marek Lindner 20 Mar '12

20 Mar '12

Signed-off-by: Marek Lindner <lindner_marek(a)yahoo.de> --- tcpdump.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/tcpdump.c b/tcpdump.c index 771e4f0..72c9cf1 100644 --- a/tcpdump.c +++ b/tcpdump.c @@ -331,10 +331,11 @@ static void dump_batman_iv_ogm(unsigned char *packet_buff, ssize_t buff_len, int printf("BAT %s: ", get_name_by_macaddr((struct ether_addr *)batman_ogm_packet->orig, read_opt)); - printf("OGM IV via neigh %s, seq %u, tq %3d, ttvn %d, ttcrc %hu, ttl %2d, v %d, flags [%c%c%c%c], length %zu\n", + printf("OGM IV via neigh %s, seq %u, tq %3d, ttvn %d, ttcrc %hu, ttl %2d, v %d, flags [%c%c%c%c%c], length %zu\n", get_name_by_macaddr((struct ether_addr *)ether_header->ether_shost, read_opt), ntohl(batman_ogm_packet->seqno), batman_ogm_packet->tq, batman_ogm_packet->ttvn, ntohs(batman_ogm_packet->tt_crc), batman_ogm_packet->header.ttl, batman_ogm_packet->header.version, + (batman_ogm_packet->flags & NOT_BEST_NEXT_HOP ? 'N' : '.'), (batman_ogm_packet->flags & DIRECTLINK ? 'D' : '.'), (batman_ogm_packet->flags & VIS_SERVER ? 'V' : '.'), (batman_ogm_packet->flags & PRIMARIES_FIRST_HOP ? 'F' : '.'), -- 1.7.9.1

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[B.A.T.M.A.N.] [PATCH] batman-adv: improve unicast packet (re)routing
by Antonio Quartulli 20 Mar '12

20 Mar '12

In case of a client X roaming from a generic node A to another node B, it is possible that a third node C gets A's OGM but not B's. At this point in time, if C wants to send data to X it will send a unicast packet destined to A. The packet header will contain A's last ttvn (C got A's OGM and so it knows it). The packet will travel towards A without being intercepted because the ttvn contained in its header is the newest for A. Once A will receive the packet, A's state will not report to be in a "roaming phase" (because, after a roaming, once A sends out its OGM, all the changes are committed and the node is considered not to be in the roaming state anymore) and it will match the ttvn carried by the packet. Therefore there is no reason for A to try to alter the packet's route, thus dropping the packet because the destination client is not there anymore. However, C is well aware that it's routing information towards the client X is outdated as it received an OGM from A saying that the client roamed away. Thanks to this detail, this patch introduces a small change in behaviour: as long as C is in the state of not knowing the new location of client X it will forward the traffic to its last known location using ttvn-1 of the destination. By using an older ttvn node A will be forced to re-route the packet. Intermediate nodes are also allowed to update the packet's destination as long as they have the information about the client's new location. Signed-off-by: Antonio Quartulli <ordex(a)autistici.org> --- routing.c | 6 ++++++ translation-table.c | 18 ++++++++++++++++++ translation-table.h | 2 ++ unicast.c | 8 ++++++++ 4 files changed, 34 insertions(+), 0 deletions(-) diff --git a/routing.c b/routing.c index 576ffb1..0950c53 100644 --- a/routing.c +++ b/routing.c @@ -922,6 +922,12 @@ static int check_unicast_ttvn(struct bat_priv *bat_priv, ethhdr = (struct ethhdr *)(skb->data + sizeof(struct unicast_packet)); + + /* we don't have an updated route for this client, so we should + * not try to reroute the packet!! */ + if (tt_global_client_is_roaming(bat_priv, ethhdr->h_dest)) + return 1; + orig_node = transtable_search(bat_priv, NULL, ethhdr->h_dest); if (!orig_node) { diff --git a/translation-table.c b/translation-table.c index b4a070f..dccf442 100644 --- a/translation-table.c +++ b/translation-table.c @@ -2113,3 +2113,21 @@ request_table: } } } + +/* returns true whether we know that the client has moved from its old + * originator to another one. This entry is kept is still kept for consistency + * purposes */ +bool tt_global_client_is_roaming(struct bat_priv *bat_priv, uint8_t *addr) +{ + struct tt_global_entry *tt_global_entry = + tt_global_hash_find(bat_priv, addr); + bool ret = false; + + if (!tt_global_entry) + goto out; + + ret = tt_global_entry->common.flags & TT_CLIENT_ROAM; + tt_global_entry_free_ref(tt_global_entry); +out: + return ret; +} diff --git a/translation-table.h b/translation-table.h index 593d1b3..c43374d 100644 --- a/translation-table.h +++ b/translation-table.h @@ -53,5 +53,7 @@ bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst); void tt_update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node, const unsigned char *tt_buff, uint8_t tt_num_changes, uint8_t ttvn, uint16_t tt_crc); +bool tt_global_client_is_roaming(struct bat_priv *bat_priv, uint8_t *addr); + #endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */ diff --git a/unicast.c b/unicast.c index 2d61e54..63ab35b 100644 --- a/unicast.c +++ b/unicast.c @@ -392,6 +392,14 @@ find_router: } unicast_packet = (struct unicast_packet *)skb->data; + + /* inform the destination ode that we are still missing a correct route + * for this client. The destination will receive this packet and will + * try to reroute it because the ttvn contained in the header is less + * than the current one */ + if (tt_global_client_is_roaming(bat_priv, ethhdr->h_dest)) + unicast_packet->ttvn = unicast_packet->ttvn - 1; + /* fragmentation mechanism only works for UNICAST (now) */ if (packet_type == BAT_UNICAST && atomic_read(&bat_priv->fragmentation) && -- 1.7.3.4

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[B.A.T.M.A.N.] [PATCH] batman-adv: avoid skb_linearise() if not needed
by Antonio Quartulli 20 Mar '12

20 Mar '12

Whenever we want to access headers only, we do not need to linearise the whole packet. Instead we can use pskb_may_pull() Signed-off-by: Antonio Quartulli <ordex(a)autistici.org> --- routing.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/routing.c b/routing.c index 962a315..576ffb1 100644 --- a/routing.c +++ b/routing.c @@ -915,8 +915,9 @@ static int check_unicast_ttvn(struct bat_priv *bat_priv, /* Check whether I have to reroute the packet */ if (seq_before(unicast_packet->ttvn, curr_ttvn) || tt_poss_change) { - /* Linearize the skb before accessing it */ - if (skb_linearize(skb) < 0) + /* check if there is enough data before accessing it */ + if (pskb_may_pull(skb, sizeof(struct unicast_packet) + + ETH_HLEN) < 0) return 0; ethhdr = (struct ethhdr *)(skb->data + -- 1.7.3.4

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[B.A.T.M.A.N.] [PATCH] batman-adv: add BAT_UNICAST_4ADDR handler in the packet-handlers array
by Antonio Quartulli 20 Mar '12

20 Mar '12

Commit 1887248c268928ebb434edab611978f51e2a4b8f introduced the packet-handlers array but it forgot to set a proper handler for the BAT_UNICAST_4ADDR packet type. This patch fixes it. Signed-off-by: Antonio Quartulli <ordex(a)autistici.org> --- main.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/main.c b/main.c index 75938fb..0757c2d 100644 --- a/main.c +++ b/main.c @@ -265,6 +265,8 @@ static void recv_handler_init(void) /* batman icmp packet */ recv_packet_handler[BAT_ICMP] = recv_icmp_packet; + /* unicast with 4 addresses packet */ + recv_packet_handler[BAT_UNICAST_4ADDR] = recv_unicast_packet; /* unicast packet */ recv_packet_handler[BAT_UNICAST] = recv_unicast_packet; /* fragmented unicast packet */ -- 1.7.3.4

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[B.A.T.M.A.N.] routing loops on interconnected routers / adhoc + ethernet
by Nicolás Echániz 20 Mar '12

20 Mar '12

Hi, Mi name is NicoEchániz, this is my first post to the list. ********** INTRO, please skip it if you find it long to read ********** I've been doing free-network stuff for a while (around 10 years). I started in Buenos Aires, Argentina, where I built one of the first nodes for BuenosAiresLibre.org I was the coordinator of the first JRRL (Free Networks Regional Meeting), where Ramón Roca (from guifi.net) was our guest keynote and members from Latin American networks intentionally gathered for the first time. I've moved last year to a small town in another province, where I'm experimenting whith a completely different network. BuenosAiresLibre (a.k.a. BAL) run in infrastructure mode and used OLSR for routing. In this town (Quintana), we are now building an ad-hoc mesh and as you must have guessed we're using batman-adv for routing. Some friends from BAL came along and we worked for a couple of weeks on this experiment. You may find information here (spanish but g.translator might help): http://wiki.arraigodigital.org.ar/RedLibre/QuintanaCamp/Documentación And some interesting pictures here: http://www.lavecindaria.org.ar/category/quintanacamp/ QuintanaLibre.org is the first experimental implementation of a cheap design of ad-hoc mesh network that we intend to re-use in hundreds of small towns around the country, in colaboration with the national Ministry of Education, through the Arraigo Digital plan. Some info on that can be found here: http://www.arraigodigital.org.ar *********************************************************************** Well... after this not-so-brief introduction, here's what I'd like to ask about. We have been experimenting with different setups for our nodes. Some of them are regular TP-Link MR-3220 (thanks Elektra for the recommendation) with a PoE modification; others have a USB/Wi-fi adapter added (TP-Link WN722N) and there's a third kind where we connected an Ubiquiti BulletM2 to an MR-3220. This third kind of setup is the one that has been giving us trouble. There's a total 5 nodes running in the test network; the longest inter-node distance is 1.5 Km. In the example below, the MR is called "marisa-mr" and the bulletM2 is called "marisa-blt" (this is the only node with this setup so far). They are connected by ethernet and ad-hoc and share the same tower space. The network seemed to work quite well, but from time to time, pings would sort of fall into a hole for a while... so we started looking at traceroutes and this is what we found. Traceroute is done from a notebook connected (with batman active on eth0) to the node called "nogal" and trying to trace the route to czuk_wlan1 (the other end of the net). running the command several times, from time to time we get this sort of output: $ sudo batctl tr czuk_wlan1 traceroute to czuk_wlan1 (f8:d1:11:0b:76:4b), 50 hops max, ... 1: nogal_wlan0 (00:15:6d:d6:24:7a) 0.395 ms 0.214 ms 0.416 ms 2: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 1.702 ms 3.291 ms 1.694 ms 3: cisterna_wlan0 (54:e6:fc:b9:be:e8) 25.282 ms * * 4: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 2.694 ms 1.722 ms 5.462 ms 5: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 1.758 ms 1.584 ms 5.409 ms 6: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 1.335 ms 4.584 ms 3.111 ms ... 47: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 2.090 ms 2.180 ms 2.138 ms 48: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 4.738 ms 2.898 ms 2.735 ms 49: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 2.325 ms 2.269 ms 2.249 ms $ sudo batctl tr czuk_wlan1 traceroute to czuk_wlan1 (f8:d1:11:0b:76:4b), 50 hops max, ... 1: nogal_wlan0 (00:15:6d:d6:24:7a) 0.541 ms 0.193 ms 0.188 ms 2: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 1.347 ms 1.221 ms 1.215 ms 3: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 1.281 ms 5.103 ms 1.255 ms 4: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 5.944 ms 1.705 ms 2.238 ms ... 33: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 1.920 ms 1.890 ms 1.815 ms 34: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 2.859 ms 1.778 ms 4.499 ms 35: * * * * 36: czuk_wlan1 (f8:d1:11:0b:76:4b) 299.941 ms 37.911 ms * and this is what a correct traceroute looks like: $ sudo batctl tr czuk_wlan1 traceroute to czuk_wlan1 (f8:d1:11:0b:76:4b), 50 hops max, 20 byte packets 1: nogal_wlan0 (00:15:6d:d6:24:7a) 0.292 ms 0.211 ms 0.209 ms 2: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 1.541 ms 1.407 ms 2.508 ms 3: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 1.464 ms 1.593 ms 1.466 ms 4: cisterna_wlan0 (54:e6:fc:b9:be:e8) 5.275 ms 18.669 ms 4.106 ms 5: czuk_wlan1 (f8:d1:11:0b:76:4b) 3.505 ms 5.681 ms 5.198 ms or this one, when the chosen route skips the cisterna node: $ sudo batctl tr czuk_wlan1 traceroute to czuk_wlan1 (f8:d1:11:0b:76:4b), 50 hops max, ... 1: nogal_wlan0 (00:15:6d:d6:24:7a) 0.293 ms 0.184 ms 1.990 ms 2: marisa-mr_wlan0 (54:e6:fc:b9:cb:38) 1.638 ms 1.687 ms 1.442 ms 3: marisa-blt_eth0 (00:15:6d:3f:2c:4f) 1.635 ms 1.334 ms 1.463 ms 4: czuk_wlan1 (f8:d1:11:0b:76:4b) 8.783 ms 3.844 ms 3.704 ms this happens with the nodes configured according to: http://www.open-mesh.org/wiki/batman-adv/Bridge-loop-avoidance or so we understand! here are the relevant portions of the nodes config. we have a central repo for configurations, thus the "strange" syntax. MARISA-BLT $ uci show wireless.@wifi-iface[0] -c marisa-blt/etc/config/ wireless.cfg033579=wifi-iface wireless.cfg033579.device=radio0 wireless.cfg033579.encryption=none wireless.cfg033579.mode=adhoc wireless.cfg033579.ssid=mesh.quintanalibre.org.ar wireless.cfg033579.bssid=02:12:34:56:78:9A # wlan0 here is a master mode interface $ uci show network.lan.ifname -c marisa-blt/etc/config/ network.lan.ifname=bat0 wlan0 eth0 # wlan0-1 here is the mesh interface $ uci show batman-adv.bat0.interfaces -c marisa-blt/etc/config/ batman-adv.bat0.interfaces=wlan0-1 br-lan MARISA-MR $ uci show wireless.@wifi-iface[0] -c marisa-mr/etc/config/ wireless.cfg033579=wifi-iface wireless.cfg033579.encryption=none wireless.cfg033579.device=radio0 wireless.cfg033579.bssid=02:12:34:56:78:9A wireless.cfg033579.mode=adhoc wireless.cfg033579.ssid=mesh.quintanalibre.org.ar (this is wlan0 in this router) #eth1 is connected to a router inside the owner's house; no batman $ uci show network.lan.ifname -c marisa-mr/etc/config/ network.lan.ifname=bat0 eth1 eth0 #wlan0 is the only wireless interface here $ uci show batman-adv.bat0.interfaces -c marisa-mr/etc/config/ batman-adv.bat0.interfaces=wlan0 br-lan We have also tried adding eth0 to bat0 and take it out of br-lan, which also "works" but gives routing loops from time to time. OpenWRT is trunk from a couple of weeks ago, where batman-adv version was 2011.4 We hoped that adding a second router through ethernet would give the mesh an alternate path and more redundancy, but we get much lower throughputs because of these loops. We would very much appreciate any insight on this matter. Hoping to read from you bat-friends soon :) Cheers, NicoEchániz

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Re: [B.A.T.M.A.N.] Meshlinux Download Link - Error 404
by Austin Williamson 16 Mar '12

16 Mar '12

Hello all, I was about to grab a copy of meshlinux for my community's project when I ran straight into 404. I also checked web.archive.org, but no copies were stored. If you happen to have a copy, let me know: I really could use it. Thanks, Austin

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B.A.T.M.A.N March 2012