B.A.T.M.A.N

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4308 discussions

[B.A.T.M.A.N.] [PATCHv3] batman-adv: drop QinQ claim frames in bridge loop avoidance
by Simon Wunderlich 24 Jun '14

24 Jun '14

From: Simon Wunderlich <simon(a)open-mesh.com> Since bridge loop avoidance only supports untagged or simple 802.1q tagged VLAN claim frames, claim frames with stacked VLAN headers (QinQ) should be detected and dropped. Transporting the over the mesh may cause problems on the receivers, or create bogus entries in the local tt tables. Reported-by: Antonio Quartulli <antonio(a)open-mesh.com> Signed-off-by: Simon Wunderlich <simon(a)open-mesh.com> --- Changes to PATCHv2 (thanks Marek): * move check into bla_process_claim() to avoid code duplication Changes to PATCHv1 (thanks Antonio): * add short description, fix capitalization for return * move drop debug message to batadv_bla_process_claim() --- bridge_loop_avoidance.c | 44 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 34 insertions(+), 10 deletions(-) diff --git a/bridge_loop_avoidance.c b/bridge_loop_avoidance.c index 6f0d9ec..a957c81 100644 --- a/bridge_loop_avoidance.c +++ b/bridge_loop_avoidance.c @@ -800,11 +800,6 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv, bla_dst = (struct batadv_bla_claim_dst *)hw_dst; bla_dst_own = &bat_priv->bla.claim_dest; - /* check if it is a claim packet in general */ - if (memcmp(bla_dst->magic, bla_dst_own->magic, - sizeof(bla_dst->magic)) != 0) - return 0; - /* if announcement packet, use the source, * otherwise assume it is in the hw_src */ @@ -866,12 +861,13 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv, struct batadv_hard_iface *primary_if, struct sk_buff *skb) { - struct batadv_bla_claim_dst *bla_dst; + struct batadv_bla_claim_dst *bla_dst, *bla_dst_own; uint8_t *hw_src, *hw_dst; - struct vlan_ethhdr *vhdr; + struct vlan_hdr *vhdr, vhdr_buf; struct ethhdr *ethhdr; struct arphdr *arphdr; unsigned short vid; + int vlan_depth = 0; __be16 proto; int headlen; int ret; @@ -882,9 +878,24 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv, proto = ethhdr->h_proto; headlen = ETH_HLEN; if (vid & BATADV_VLAN_HAS_TAG) { - vhdr = vlan_eth_hdr(skb); - proto = vhdr->h_vlan_encapsulated_proto; - headlen += VLAN_HLEN; + /* Traverse the VLAN/Ethertypes. + * + * At this point it is known that the first protocol is a VLAN + * header, so start checking at the encapsulated protocol. + * + * The depth of the VLAN headers is recorded to drop BLA claim + * frames encapsulated into multiple VLAN headers (QinQ). + */ + do { + vhdr = skb_header_pointer(skb, headlen, VLAN_HLEN, + &vhdr_buf); + if (!vhdr) + return 0; + + proto = vhdr->h_vlan_encapsulated_proto; + headlen += VLAN_HLEN; + vlan_depth++; + } while (proto == htons(ETH_P_8021Q)); } if (proto != htons(ETH_P_ARP)) @@ -914,6 +925,19 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv, hw_src = (uint8_t *)arphdr + sizeof(struct arphdr); hw_dst = hw_src + ETH_ALEN + 4; bla_dst = (struct batadv_bla_claim_dst *)hw_dst; + bla_dst_own = &bat_priv->bla.claim_dest; + + /* check if it is a claim frame in general */ + if (memcmp(bla_dst->magic, bla_dst_own->magic, + sizeof(bla_dst->magic)) != 0) + return 0; + + /* check if there is a claim frame encapsulated deeper in (QinQ) and + * drop that, as this is not supported by BLA but should also not be + * sent via the mesh. + */ + if (vlan_depth > 1) + return 1; /* check if it is a claim frame. */ ret = batadv_check_claim_group(bat_priv, primary_if, hw_src, hw_dst, -- 1.9.1

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[B.A.T.M.A.N.] student
by Akbar Majidi 24 Jun '14

24 Jun '14

Hi Sorry for interested when you are busy. i don’t want patch b.a.t.m.a.n for ns-2 please send patch file for me. i waiting… best regards: Akbar Majidi

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[B.A.T.M.A.N.] Bad link via ethernet using two tl-wr1043nd ports
by Ilario Gelmetti 22 Jun '14

22 Jun '14

Hi all! I'm using OpenWrt trunk (r41296) with batman-adv (2014.2.0) on a TP-Link WR1043ND using this network configuration file: http://sprunge.us/SVCI as you can see batman is running on ports number 1 (eth0.3) and number 3 (eth0.4). root@OpenWrt:~# batctl if eth0.3: active eth0.4: active I connect this router via ethernet cable to another device running batman-adv (2014.2.0). Looking at the link quality with "batctl o" I noticed that sometimes the link quality is poor using a port and good using the other one port. The good and the bad port aren't fixed, they switch randomly, so I tend to exclude an hardware problem. I connected the batman device to port 1 (eth0.3) and laptop on port 3 (eth0.4) and the quality of the batman link changes from one boot to another: root@OpenWrt:~# batctl o [B.A.T.M.A.N. adv 2014.2.0, MainIF/MAC: eth0.3/10:fe:ed:7f:3e:80 (bat0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF]: Potential nexthops ... dc:9f:db:2c:e4:34 0.700s (255) dc:9f:db:2d:e4:34 [ eth0.3]: dc:9f:db:2d:e4:34 (255) dc:9f:db:2d:e4:34 0.360s (255) dc:9f:db:2d:e4:34 [ eth0.3]: dc:9f:db:2d:e4:34 (255) -----reboot & wait some minutes----- good, 255 -----reboot & wait some minutes----- root@OpenWrt:~# batctl o [B.A.T.M.A.N. adv 2014.2.0, MainIF/MAC: eth0.4/10:fe:ed:7f:3e:80 (bat0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF]: Potential nexthops ... dc:9f:db:2c:e4:34 0.680s (119) dc:9f:db:2d:e4:34 [ eth0.3]: dc:9f:db:2d:e4:34 (119) dc:9f:db:2d:e4:34 0.580s (119) dc:9f:db:2d:e4:34 [ eth0.3]: dc:9f:db:2d:e4:34 (119) -----reboot & wait some minutes----- good, 255 -----reboot & wait some minutes----- bad, ~129 -----reboot & wait some minutes----- bad, ~139 -----reboot & wait some minutes----- bad, ~131 -----reboot & wait some minutes----- good, 255 Thanks, Ilario -- Ilario Gelmetti iochesonome(a)gmail.com ilario.gelmetti(a)sns.it

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[B.A.T.M.A.N.] [PATCHv2] batman-adv: drop QinQ claim frames in bridge loop avoidance
by Simon Wunderlich 22 Jun '14

22 Jun '14

From: Simon Wunderlich <simon(a)open-mesh.com> Since bridge loop avoidance only supports untagged or simple 802.1q tagged VLAN claim frames, claim frames with stacked VLAN headers (QinQ) should be detected and dropped. Transporting the over the mesh may cause problems on the receivers, or create bogus entries in the local tt tables. Reported-by: Antonio Quartulli <antonio(a)open-mesh.com> Signed-off-by: Simon Wunderlich <simon(a)open-mesh.com> --- Changes to PATCHv1 (thanks Antonio): * add short description, fix capitalization for return * move drop debug message to batadv_bla_process_claim() --- bridge_loop_avoidance.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/bridge_loop_avoidance.c b/bridge_loop_avoidance.c index 6f0d9ec..9e7a5ab 100644 --- a/bridge_loop_avoidance.c +++ b/bridge_loop_avoidance.c @@ -851,6 +851,73 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv, return 2; } +/** + * batadv_is_encapsulated_claim - checks if a claim frame is encapsulated + * @bat_priv: the bat priv with all the soft interface information + * @skb: skb to be checked + * + * Check if this frame is a claim frame encapsulated in at least two layers + * of VLANs. + * + * Returns 1 if this is an encapsulated claim frame, 0 otherwise. + */ +static int batadv_is_encapsulated_claim(struct batadv_priv *bat_priv, + struct sk_buff *skb) +{ + struct batadv_bla_claim_dst *bla_dst, *bla_dst_own; + struct vlan_hdr vhdr, *vhdr_ptr; + uint8_t *hw_src, *hw_dst; + struct ethhdr *ethhdr; + struct arphdr *arphdr; + int headlen; + + /* Traverse the VLAN/Ethertypes until an ARP header is found. + * + * At this point it is known that the first two protocols + * are VLAN headers, so start checking at the encapsulated protocol + * of the second header. + */ + headlen = VLAN_ETH_HLEN; + do { + vhdr_ptr = skb_header_pointer(skb, headlen, VLAN_HLEN, &vhdr); + if (!vhdr_ptr) + return 0; + + headlen += VLAN_HLEN; + } while (vhdr_ptr->h_vlan_encapsulated_proto == htons(ETH_P_8021Q)); + + if (vhdr_ptr->h_vlan_encapsulated_proto != htons(ETH_P_ARP)) + return 0; + + if (unlikely(!pskb_may_pull(skb, headlen + arp_hdr_len(skb->dev)))) + return 0; + + /* pskb_may_pull() may have modified the pointers, get ethhdr again */ + ethhdr = eth_hdr(skb); + arphdr = (struct arphdr *)((uint8_t *)ethhdr + headlen); + + /* Check whether the ARP frame carries a valid IP information */ + if (arphdr->ar_hrd != htons(ARPHRD_ETHER)) + return 0; + if (arphdr->ar_pro != htons(ETH_P_IP)) + return 0; + if (arphdr->ar_hln != ETH_ALEN) + return 0; + if (arphdr->ar_pln != 4) + return 0; + + hw_src = (uint8_t *)arphdr + sizeof(struct arphdr); + hw_dst = hw_src + ETH_ALEN + 4; + bla_dst = (struct batadv_bla_claim_dst *)hw_dst; + bla_dst_own = &bat_priv->bla.claim_dest; + + /* check if it is a claim frame in general */ + if (memcmp(bla_dst->magic, bla_dst_own->magic, + sizeof(bla_dst->magic)) != 0) + return 0; + + return 1; +} /** * batadv_bla_process_claim @@ -885,6 +952,24 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv, vhdr = vlan_eth_hdr(skb); proto = vhdr->h_vlan_encapsulated_proto; headlen += VLAN_HLEN; + + if (proto == htons(ETH_P_8021Q)) { + /* check if there is a claim frame encapsulated + * deeper in (QinQ) and drop that, as this is + * not supported by BLA but should also not be + * sent via the mesh. + * + * if its not, let the frame pass without further + * checks, as it is not a claim frame anyway. + */ + if (batadv_is_encapsulated_claim(bat_priv, skb)) { + batadv_dbg(BATADV_DBG_BLA, bat_priv, + "Dropping encapsulated claim frame\n"); + return 1; + } else { + return 0; + } + } } if (proto != htons(ETH_P_ARP)) -- 1.9.1

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[B.A.T.M.A.N.] [PATCH] batman-adv: Add multicast optimization support for bridged setups
by Linus Lüssing 21 Jun '14

21 Jun '14

So far, the recently added multicast optimizations did not support a configuration where a bridge is on top of the soft-interface (e.g. bat0). Now the Linux bridge code is able to provide us with the missing bits: Multicast Listeners: The bridge hands us a list of multicast listeners it has detected behind the bridge which we will announce through the mesh via the translation table, allowing other nodes to direct multicast packets to these clients behind the bridge even with enabled multicast optimizations. Queriers: The bridge informs us whether there is a selected IGMP or MLD querier behind the bridge. In that case we need to all according IPv4 or IPv6 multicast traffic directed to us. These two parts together allow us to serve all multicast listeners with IPv6 link-local multicast packets even when bridges are involved and our multicast optimizations enabled. Signed-off-by: Linus Lüssing <linus.luessing(a)web.de> --- compat.c | 15 ++++++ compat.h | 30 ++++++++++++ main.h | 1 + multicast.c | 151 ++++++++++++++++++++++++++++++++++++++++++++++++++++------- 4 files changed, 179 insertions(+), 18 deletions(-) diff --git a/compat.c b/compat.c index 3dbf9d2..7187a34 100644 --- a/compat.c +++ b/compat.c @@ -109,3 +109,18 @@ void batadv_free_rcu_tvlv_handler(struct rcu_head *rcu) } #endif /* < KERNEL_VERSION(3, 0, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0) + +int br_multicast_list_adjacent(struct net_device *dev, + struct list_head *br_ip_list) +{ + return 0; +} + +bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto) +{ + return true; +} + +#endif /* < KERNEL_VERSION(3, 16, 0) */ diff --git a/compat.h b/compat.h index 5eb5fe6..24a86cd 100644 --- a/compat.h +++ b/compat.h @@ -240,6 +240,12 @@ static inline void skb_reset_mac_len(struct sk_buff *skb) #endif /* < KERNEL_VERSION(3, 0, 0) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0) + +#define IS_ENABLED(x) defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + +#endif /* < KERNEL_VERSION(3, 1, 0) */ + #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0) #define batadv_interface_add_vid(x, y, z) \ @@ -438,4 +444,28 @@ static int __batadv_interface_kill_vid(struct net_device *dev, __be16 proto,\ #endif /* < KERNEL_VERSION(3, 14, 0) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0) + +int br_multicast_list_adjacent(struct net_device *dev, + struct list_head *br_ip_list); +bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); + +struct br_ip { + union { + __be32 ip4; +#if IS_ENABLED(CONFIG_IPV6) + struct in6_addr ip6; +#endif + } u; + __be16 proto; + __u16 vid; +}; + +struct br_ip_list { + struct list_head list; + struct br_ip addr; +}; + +#endif /* < KERNEL_VERSION(3, 16, 0) */ + #endif /* _NET_BATMAN_ADV_COMPAT_H_ */ diff --git a/main.h b/main.h index 87e7196..d34dc5d 100644 --- a/main.h +++ b/main.h @@ -169,6 +169,7 @@ enum batadv_uev_type { #include <linux/netdevice.h> /* netdevice */ #include <linux/etherdevice.h> /* ethernet address classification */ #include <linux/if_ether.h> /* ethernet header */ +#include <linux/if_bridge.h> /* bridge / multicast-snooping communication */ #include <linux/poll.h> /* poll_table */ #include <linux/kthread.h> /* kernel threads */ #include <linux/pkt_sched.h> /* schedule types */ diff --git a/multicast.c b/multicast.c index 96b66fd..e4a8acd 100644 --- a/multicast.c +++ b/multicast.c @@ -23,6 +23,29 @@ #include "multicast.h" /** + * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists + * @soft_iface: netdev struct of the mesh interface + * + * Returns either a bridge interface on top of our soft interface or + * NULL if no such bridge exists. + */ +static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) +{ + struct net_device *upper = soft_iface; + + rcu_read_lock(); + do { + upper = netdev_master_upper_dev_get_rcu(upper); + } while (upper && !(upper->priv_flags & IFF_EBRIDGE)); + + if (upper) + dev_hold(upper); + rcu_read_unlock(); + + return upper; +} + +/** * batadv_mcast_mla_softif_get - get softif multicast listeners * @dev: the device to collect multicast addresses from * @mcast_list: a list to put found addresses into @@ -30,17 +53,21 @@ * Collect multicast addresses of the local multicast listeners * on the given soft interface, dev, in the given mcast_list. * + * If there is a bridge interface on top of dev, collect from that one + * instead. + * * Returns -ENOMEM on memory allocation error or the number of * items added to the mcast_list otherwise. */ static int batadv_mcast_mla_softif_get(struct net_device *dev, struct hlist_head *mcast_list) { + struct net_device *bridge = batadv_mcast_get_bridge(dev); struct netdev_hw_addr *mc_list_entry; struct batadv_hw_addr *new; int ret = 0; - netif_addr_lock_bh(dev); + netif_addr_lock_bh(bridge ? bridge : dev); netdev_for_each_mc_addr(mc_list_entry, dev) { new = kmalloc(sizeof(*new), GFP_ATOMIC); if (!new) { @@ -52,7 +79,10 @@ static int batadv_mcast_mla_softif_get(struct net_device *dev, hlist_add_head(&new->list, mcast_list); ret++; } - netif_addr_unlock_bh(dev); + netif_addr_unlock_bh(bridge ? bridge : dev); + + if (bridge) + dev_put(bridge); return ret; } @@ -78,6 +108,87 @@ static bool batadv_mcast_mla_is_duplicate(uint8_t *mcast_addr, } /** + * batadv_mcast_mla_br_addr_cpy - copy a bridge multicast address + * @dst: destination to write to - a multicast MAC address + * @src: source to read from - a multicast IP address + * + * Converts a given multicast IPv4/IPv6 address from a bridge + * to its matching multicast MAC address and copies it into the given + * destination buffer. + * + * Caller needs to make sure the destination buffer can hold + * at least ETH_ALEN bytes. + */ +static void batadv_mcast_mla_br_addr_cpy(char *dst, const struct br_ip *src) +{ + if (src->proto == htons(ETH_P_IP)) { + /* RFC 1112 */ + memcpy(dst, "\x01\x00\x5e", 3); + memcpy(dst + 3, ((char *)&src->u.ip4) + 1, ETH_ALEN - 3); + dst[3] &= 0x7F; + } +#if IS_ENABLED(CONFIG_IPV6) + else if (src->proto == htons(ETH_P_IPV6)) { + /* RFC 2464 */ + memcpy(dst, "\x33\x33", 2); + memcpy(dst + 2, &src->u.ip6.s6_addr32[3], + sizeof(src->u.ip6.s6_addr32[3])); + } +#endif + else + memset(dst, 0, ETH_ALEN); +} + +/** + * batadv_mcast_mla_bridge_get - get bridged-in multicast listeners + * @dev: a bridge slave whose bridge to collect multicast addresses from + * @mcast_list: a list to put found addresses into + * + * Collects multicast addresses of the bridged-in multicast listeners + * from the bridge on top of the given soft interface, dev, in the + * given mcast_list. + * + * Returns -ENOMEM on memory allocation error or the number of + * items added to the mcast_list otherwise. + */ +static int batadv_mcast_mla_bridge_get(struct net_device *dev, + struct hlist_head *mcast_list) +{ + struct list_head bridge_mcast_list = LIST_HEAD_INIT(bridge_mcast_list); + struct br_ip_list *br_ip_entry, *tmp; + struct batadv_hw_addr *new; + uint8_t mcast_addr[ETH_ALEN]; + int ret; + + ret = br_multicast_list_adjacent(dev, &bridge_mcast_list); + if (ret < 0) + goto out; + + list_for_each_entry(br_ip_entry, &bridge_mcast_list, list) { + batadv_mcast_mla_br_addr_cpy(mcast_addr, &br_ip_entry->addr); + if (batadv_mcast_mla_is_duplicate(mcast_addr, mcast_list)) + continue; + + new = kmalloc(sizeof(*new), GFP_ATOMIC); + if (!new) { + ret = -ENOMEM; + break; + } + + ether_addr_copy(new->addr, mcast_addr); + hlist_add_head(&new->list, mcast_list); + } + +out: + list_for_each_entry_safe(br_ip_entry, tmp, &bridge_mcast_list, list) { + list_del(&br_ip_entry->list); + kfree(br_ip_entry); + } + + return ret; +} + +/** * batadv_mcast_mla_list_free - free a list of multicast addresses * @mcast_list: the list to free * @@ -185,8 +296,8 @@ static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv) * Updates the own multicast tvlv with our current multicast related settings, * capabilities and inabilities. * - * Returns true if the tvlv container is registered afterwards. Otherwise - * returns false. + * Returns false if we want all IPv4 && IPv6 multicast traffic and true + * otherwise. */ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) { @@ -195,19 +306,18 @@ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) mcast_data.flags = BATADV_NO_FLAGS; memset(mcast_data.reserved, 0, sizeof(mcast_data.reserved)); - /* Avoid attaching MLAs, if there is a bridge on top of our soft - * interface, we don't support that yet (TODO) - */ - if (batadv_mcast_has_bridge(bat_priv)) { - if (bat_priv->mcast.enabled) { - batadv_tvlv_container_unregister(bat_priv, - BATADV_TVLV_MCAST, 1); - bat_priv->mcast.enabled = false; - } + if (!batadv_mcast_has_bridge(bat_priv)) + goto skip; - return false; - } + mcast_data.flags |= BATADV_MCAST_WANT_ALL_UNSNOOPABLES; + + if (br_multicast_has_querier_adjacent(bat_priv->soft_iface, ETH_P_IP)) + mcast_data.flags |= BATADV_MCAST_WANT_ALL_IPV4; + if (br_multicast_has_querier_adjacent(bat_priv->soft_iface, ETH_P_IPV6)) + mcast_data.flags |= BATADV_MCAST_WANT_ALL_IPV6; + +skip: if (!bat_priv->mcast.enabled || mcast_data.flags != bat_priv->mcast.flags) { batadv_tvlv_container_register(bat_priv, BATADV_TVLV_MCAST, 1, @@ -216,7 +326,8 @@ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) bat_priv->mcast.enabled = true; } - return true; + return !(mcast_data.flags & + (BATADV_MCAST_WANT_ALL_IPV4 + BATADV_MCAST_WANT_ALL_IPV6)); } /** @@ -233,13 +344,17 @@ void batadv_mcast_mla_update(struct batadv_priv *bat_priv) int ret; if (!batadv_mcast_mla_tvlv_update(bat_priv)) - goto update; + goto skip; ret = batadv_mcast_mla_softif_get(soft_iface, &mcast_list); if (ret < 0) goto out; -update: + ret = batadv_mcast_mla_bridge_get(soft_iface, &mcast_list); + if (ret < 0) + goto out; + +skip: batadv_mcast_mla_tt_retract(bat_priv, &mcast_list); batadv_mcast_mla_tt_add(bat_priv, &mcast_list); -- 1.7.10.4

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[B.A.T.M.A.N.] Bridge changing source mac address prevents batman-adv from connecting
by Ilario Gelmetti 20 Jun '14

20 Jun '14

Hi all! I'm using batman-adv (2014.2.0) on two devices running OpenWrt (LibreMesh) connected using a third device running a proprietary firmware in bridge mode (AirOS), this is the topology: http://i.imgur.com/ELMi5RC.png mac3E80 OpenWrt batman----cable----macE3E7 AirOS station----wireless-- --macE434 AP OpenWrt batman using tcpdump on the OpenWrt devices I can see batman packets flowing: on mac3E80 I can see: http://sprunge.us/iePM while on macE434 I can see: http://sprunge.us/DIAX as you can see the problem is that macE434 sees packets from mac3E80 *approaching with the wrong mac address*, the mac address of macE3E7 so I think it discards the packages when source mac address is different from mac address specified inside the packet. Is this only a security check? How could I get things work? Thanks, Ilario -- Ilario Gelmetti iochesonome(a)gmail.com ilario.gelmetti(a)sns.it

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[B.A.T.M.A.N.] New to the list
by Jay Brussels 17 Jun '14

17 Jun '14

Hello everyone, Just joined the list. I have completed a 2,000 client WiFi network without using mesh networking. I am planning on building a mesh network for 7,000 clients utilizing 145 gateways. I have the radio backbone already in place for another purpose (145 stations connected to centrally located tower) and this is fed by fiber. I am interested in mesh networking since some clients (indoor dual-band routers) will not be able to communicate directly with the 145 radios. I plan to add a second radio at each of the 145 sites to be part of the mesh network. Any help or suggestions will be appreciated. Jay Brussels DSLX jay(a)dslx.net

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[B.A.T.M.A.N.] New to the list
by Jay Brussels 17 Jun '14

17 Jun '14

Hello everyone, Just joined the list. I am planning on building a mesh network for 7,000 clients utilizing 145 gateways. I have the radio backbone already in place for another purpose (145 stations connected to centrally located tower) and this is fed by fiber. I am interested in mesh since some clients (indoor dual-band routers) will not be able to communicate directly with the 145 radios. I plan to add a second radio at each of the 145 sites to be part of the mesh network. Any help or suggestions will be appreciated. Jay Brussels DSLX jay(a)dslx.net

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[B.A.T.M.A.N.] question about batman-adv auto run
by michael.holcman1＠free.fr 17 Jun '14

17 Jun '14

Hello, Do you know how to auto run batman-adv, because, i have no answer where i write:/etc/init.d enable ? Where i can located the configure fils as following ? config 'mesh' 'bat0' option 'interface' 'wlan0' 'bride' option 'aggregated_ogms' option 'ap_isolation' option 'bonding' option 'fragmentation' option 'gw_bandwidth' option 'gw_mode' option 'gw_sel_class' option 'log_level' 'all' option 'orig_interval' '500' option 'vis_mode' option 'bridge_loop_avoidance' '1' option 'distributed_arp_table' option 'network_coding' option 'hop_penalty' # yet another batX instance # config 'mesh' 'bat5' # option 'interfaces' 'second_mesh'

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[B.A.T.M.A.N.] DHCP-Monitoring of Gateways
by Jan Lühr 16 Jun '14

16 Jun '14

Hello, we're running batman 2013.4, having multiple Gateways. For doing so, we'd like to monitor the availability of every dhcp-server on each Gateway. I noticed: If DHCP-Packages (even unicast ones) that unicast DHCP-Requests / Discovery are unanswered, if -> they're sent locally on a gateway -> sent to a gateway not "chosen" (according to batctl gwl) by the monitoring host. What's the best way of monitoring all DHCP-Servers? Is there a way to set up a monitoring node, that can reach all DHCP-Servers? If not, how can request an ip address locally? Thanks, Greetz, Jan

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