B.A.T.M.A.N January 2015

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

12 participants
24 discussions

[B.A.T.M.A.N.] TVLV infrastructure (v2)
by Marek Lindner 10 Jun '15

10 Jun '15

Hi, at the battlemesh we had plenty of time to discuss and test the tvlv patchset. Therefore, a number of changes/fixes found their way into v2 touching the tvlv API, network coding, unicast sending and gateway announcements. This looks like the final version which is going to be merged unless objections are raised soon-ish. Cheers, Marek

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[B.A.T.M.A.N.] [PATCHv14 0/6] Basic Multicast Optimizations
by Linus Lüssing 10 Jun '15

10 Jun '15

This is the fourteenth revision of the basic multicast optimization patches. Changes in v14 include: * fixed compilation for CONFIG_BATMAN_ADV_MCAST=n (issue was introduced by v13) * fixed potential null pointer exception (moved ethhdr assignment in batadv_mcast_forw_mode() to after the check methods / pskb_may_pull()s) * removed flag-list-"helper" functions * removed methods which were performing both counting and orig_node retrieval in batadv_mcast_forw_mode(), instead doing that in two logical, seperate sections in batadv_mcast_forw_mode() Cheers, Linus

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[B.A.T.M.A.N.] [PATCH v2 00/26] batman-adv: Cleanups
by Markus Pargmann 24 Mar '15

24 Mar '15

Hi, this is v2 of this series. I removed the hashtable patches for the moment. The types.h patch is fixed to include linux headers only when compiling for the kernel so that it can still be used in batctl. Major changes (Patch 1-7): - Compiling debugfs.c only when CONFIG_DEBUG_FS is selected. This reduces the amount of unnecessary code that is executed. At the moment all calls to debugfs functions will result in NOOPs. However there is some more code that we simply don't need without DEBUG_FS. - tvlv is separated from the large main.c file into its own tvlv.c. I don't see a reason to have this set of functions for tvlv inside the main.c file. Minor changes (Patch 8-26): - Removing unnecessary return value variables - Fixing some comments - Reordering functions to increase readability - Coding style fixes - Declare boolean return types as bool - Add missing includes Best regards, Markus Markus Pargmann (26): batman-adv: debugfs, avoid compiling for !DEBUG_FS batman-adv: Separate logging header batman-adv: iv_ogm, Reduce code duplication batman-adv: iv_ogm, divide and round for ring buffer avg batman-adv: init, Add some error handling batman-adv: tvlv realloc, move error handling into if block batman-adv: split tvlv into a seperate file batman-adv: Makefile, Sort alphabetically batman-adv: iv_ogm_iface_enable, direct return values batman-adv: iv_ogm_aggr_packet, bool return value batman-adv: iv_ogm_send_to_if, declare char* as const batman-adv: iv_ogm_can_aggregate, code readability batman-adv: iv_ogm_orig_update, remove unnecessary brackets batman-adv: iv_ogm_aggregate_new, simplify error handling batman-adv: iv_ogm_queue_add, Simplify expressions batman-adv: iv_ogm_orig_update, style, add missin brackets batman-adv: iv_ogm, Fix dup_status comment batman-adv: iv_ogm, fix coding style batman-adv: iv_ogm, fix comment function name batman-adv: types, Fix comment on bcast_own batman-adv: main, Convert is_my_mac() to bool batman-adv: main, batadv_compare_eth return bool batman-adv: Remove unnecessary ret variable batman-adv: Remove unnecessary ret variable in algo_register batman-adv: packet.h, add some missing includes batman-adv: types.h, add missing include Makefile.kbuild | 5 +- bat_iv_ogm.c | 239 +++++++++--------- bitarray.c | 1 + bridge_loop_avoidance.c | 1 + debugfs.c | 9 +- debugfs.h | 39 +++ distributed-arp-table.c | 2 + gateway_client.c | 1 + gateway_common.c | 2 + hard-interface.c | 1 + icmp_socket.c | 1 + log.h | 82 +++++++ main.c | 626 +++--------------------------------------------- main.h | 101 +------- multicast.c | 1 + network-coding.c | 2 + originator.c | 1 + packet.h | 5 + routing.c | 2 + send.c | 1 + sysfs.c | 1 + translation-table.c | 2 + tvlv.c | 592 +++++++++++++++++++++++++++++++++++++++++++++ tvlv.h | 62 +++++ types.h | 8 +- 25 files changed, 967 insertions(+), 820 deletions(-) create mode 100644 log.h create mode 100644 tvlv.c create mode 100644 tvlv.h -- 2.1.3

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[B.A.T.M.A.N.] Understanding MAC-Adresses in iptables-Logs
by Jan Lühr 18 Feb '15

18 Feb '15

Hello folks, there appears to be some misconfiguration in our network. A gateway is blocking unknown ip-addresses: [658047.514011] FORWARD DROPPEDIN=bat0 OUT=backbone MAC=3a:81:5b:64:fa:32:08:fc:88:9b:8a:60:08:00:45:00:00:4f:6c:b1:40:00:3f:06:b8:8e:0a:a6 SRC=10.166.28.69 DST=173.194.65.188 LEN=79 TOS=0x00 PREC=0x00 TTL=63 ID=27825 DF PROTO=TCP SPT=45173 DPT=5228 WINDOW=9131 RES=0x00 ACK PSH URGP=0 [658047.519455] FORWARD DROPPEDIN=bat0 OUT=backbone MAC=3a:81:5b:64:fa:32:08:fc:88:9b:8a:60:08:00:45:00:00:34:6c:b2:40:00:3f:06:b8:a8:0a:a6 SRC=10.166.28.69 DST=173.194.65.188 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=27826 DF PROTO=TCP SPT=45173 DPT=5228 WINDOW=9131 RES=0x00 ACK FIN URGP=0 I'm somewhat confused by the mac-address here - it's very long. Can I somehow derive, which originator or client is propagating or using this address? Greetz, Jan

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Re: [B.A.T.M.A.N.] [OpenWrt-Devel] [PATCH netifd] bridge: allow enabling or disabling the multicast querier independently of IGMP snooping
by Gioacchino Mazzurco 30 Jan '15

30 Jan '15

Reading this mail seems that who installa batman-adv nodes should do this setting manually, doesn't batman-adv know/(can estimate) who is the goode node were to put the querier? What happen if we have the querier on every node? Thanks! On Tuesday, January 27, 2015 03:49:52 AM Matthias Schiffer wrote: > In larger networks, especially big batman-adv meshes, it may be desirable to > enable IGMP snooping on every bridge without enabling the multicast querier > to specifically put the querier on a well-connected node. > > This patch adds a new UCI option 'multicast_querier' for bridges which > allows this. The default is still the value of the 'igmp_snooping' option > to maintain backwards compatiblity. > > Signed-off-by: Matthias Schiffer <mschiffer(a)universe-factory.net> > --- > bridge.c | 8 +++++++- > system-linux.c | 2 +- > system.h | 1 + > 3 files changed, 9 insertions(+), 2 deletions(-) > > diff --git a/bridge.c b/bridge.c > index f8478ad..f7dbf61 100644 > --- a/bridge.c > +++ b/bridge.c > @@ -32,6 +32,7 @@ enum { > BRIDGE_ATTR_HELLO_TIME, > BRIDGE_ATTR_MAX_AGE, > BRIDGE_ATTR_BRIDGE_EMPTY, > + BRIDGE_ATTR_MULTICAST_QUERIER, > __BRIDGE_ATTR_MAX > }; > > @@ -45,6 +46,7 @@ static const struct blobmsg_policy > bridge_attrs[__BRIDGE_ATTR_MAX] = { [BRIDGE_ATTR_MAX_AGE] = { "max_age", > BLOBMSG_TYPE_INT32 }, > [BRIDGE_ATTR_IGMP_SNOOP] = { "igmp_snooping", BLOBMSG_TYPE_BOOL }, > [BRIDGE_ATTR_BRIDGE_EMPTY] = { "bridge_empty", BLOBMSG_TYPE_BOOL }, > + [BRIDGE_ATTR_MULTICAST_QUERIER] = { "multicast_querier", BLOBMSG_TYPE_BOOL > }, }; > > static const struct uci_blob_param_info bridge_attr_info[__BRIDGE_ATTR_MAX] > = { @@ -547,6 +549,7 @@ bridge_apply_settings(struct bridge_state *bst, > struct blob_attr **tb) cfg->stp = false; > cfg->forward_delay = 2; > cfg->igmp_snoop = true; > + cfg->multicast_querier = true; > cfg->bridge_empty = false; > cfg->priority = 0x7FFF; > > @@ -560,7 +563,10 @@ bridge_apply_settings(struct bridge_state *bst, struct > blob_attr **tb) cfg->priority = blobmsg_get_u32(cur); > > if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP])) > - cfg->igmp_snoop = blobmsg_get_bool(cur); > + cfg->multicast_querier = cfg->igmp_snoop = blobmsg_get_bool(cur); > + > + if ((cur = tb[BRIDGE_ATTR_MULTICAST_QUERIER])) > + cfg->multicast_querier = blobmsg_get_bool(cur); > > if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) { > cfg->ageing_time = blobmsg_get_u32(cur); > diff --git a/system-linux.c b/system-linux.c > index 4737fa6..ef90880 100644 > --- a/system-linux.c > +++ b/system-linux.c > @@ -772,7 +772,7 @@ int system_bridge_addbr(struct device *bridge, struct > bridge_config *cfg) bridge->ifname, cfg->igmp_snoop ? "1" : "0"); > > system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querie > r", - bridge->ifname, cfg->igmp_snoop ? "1" : "0"); > + bridge->ifname, cfg->multicast_querier ? "1" : "0"); > > args[0] = BRCTL_SET_BRIDGE_PRIORITY; > args[1] = cfg->priority; > diff --git a/system.h b/system.h > index 9a2326b..94e0dd9 100644 > --- a/system.h > +++ b/system.h > @@ -50,6 +50,7 @@ struct bridge_config { > enum bridge_opt flags; > bool stp; > bool igmp_snoop; > + bool multicast_querier; > unsigned short priority; > int forward_delay; > bool bridge_empty;

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[B.A.T.M.A.N.] [PATCH] alfred: Tighten size check on received packet
by Jan-Philipp Litza 23 Jan '15

23 Jan '15

When first checking if a received packet is truncated, the size of the alfred_tlv structure is ignored, thus allowing packets that are truncated by 4 bytes or less to pass the check unnoticed. Even the check itself might access memory after the packet if its size was only 2 bytes or less. Signed-off-by: Jan-Philipp Litza <janphilipp(a)litza.de> --- recv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/recv.c b/recv.c index 90db0b3..870485f 100644 --- a/recv.c +++ b/recv.c @@ -402,7 +402,8 @@ int recv_alfred_packet(struct globals *globals, struct interface *interface) return -1; /* drop truncated packets */ - if (length < ((int)ntohs(packet->length))) + if (length < (int)sizeof(*packet) || + length < (int)(ntohs(packet->length) + sizeof(*packet))) return -1; /* drop incompatible packet */ -- 2.1.0

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[B.A.T.M.A.N.] [PATCH 00/31] batman-adv: Cleanups
by Markus Pargmann 12 Jan '15

12 Jan '15

Hi, this series contains some major cleanup patches (at the beginning of the series) and some minor cleanups at the end of the series. The behavior of batman should not be influenced by this series as these patches are only transformations to make the code more readable and maintainable. If it does influence behavior something is wrong with this series. The series was tested on ARM SoC with mwifiex driver. Major changes (Patch 1-12): - Compiling debugfs.c only when CONFIG_DEBUG_FS is selected. This reduces the amount of unnecessary code that is executed. At the moment all calls to debugfs functions will result in NOOPs. However there is some more code that we simply don't need without DEBUG_FS. - tvlv is separated from the large main.c file into its own tvlv.c. I don't see a reason to have this set of functions for tvlv inside the main.c file. - The hashtable implementation now has accessor functions to avoid direct access on the private hashtable structure. This should improve the hashtable interface and create proper encapsulation. Minor changes (Patch 13-31): - Removing unnecessary return value variables - Fixing some comments - Reordering functions to increase readability - Coding style fixes - Declare boolean return types as bool - Add missing includes Best Regards, Markus Markus Pargmann (31): batman-adv: debugfs, avoid compiling for !DEBUG_FS batman-adv: Separate logging header batman-adv: iv_ogm, Reduce code duplication batman-adv: iv_ogm, divide and round for ring buffer avg batman-adv: init, Add some error handling batman-adv: tvlv realloc, move error handling into if block batman-adv: split tvlv into a seperate file batman-adv: hash, remove function implementations from header batman-adv: hash, Add helper functions batman-adv: hash, replace direct hash structure accesses batman-adv: hash, make struct hashtable private batman-adv: hash, add used linux headers batman-adv: Makefile, Sort alphabetically batman-adv: iv_ogm_iface_enable, direct return values batman-adv: iv_ogm_aggr_packet, bool return value batman-adv: iv_ogm_send_to_if, declare char* as const batman-adv: iv_ogm_can_aggregate, code readability batman-adv: iv_ogm_orig_update, remove unnecessary brackets batman-adv: iv_ogm_aggregate_new, simplify error handling batman-adv: iv_ogm_queue_add, Simplify expressions batman-adv: iv_ogm_orig_update, style, add missin brackets batman-adv: iv_ogm, Fix dup_status comment batman-adv: iv_ogm, fix coding style batman-adv: iv_ogm, fix comment function name batman-adv: types, Fix comment on bcast_own batman-adv: main, Convert is_my_mac() to bool batman-adv: main, batadv_compare_eth return bool batman-adv: Remove unnecessary ret variable batman-adv: Remove unnecessary ret variable in algo_register batman-adv: packet.h, add some missing includes batman-adv: types.h, add missing include Makefile.kbuild | 5 +- bat_iv_ogm.c | 247 +++++++++---------- bitarray.c | 1 + bridge_loop_avoidance.c | 58 +++-- debugfs.c | 9 +- debugfs.h | 39 +++ distributed-arp-table.c | 28 ++- gateway_client.c | 1 + gateway_common.c | 2 + hard-interface.c | 1 + hash.c | 163 +++++++++++++ hash.h | 164 ++----------- icmp_socket.c | 1 + log.h | 82 +++++++ main.c | 626 +++--------------------------------------------- main.h | 101 +------- multicast.c | 1 + network-coding.c | 38 +-- originator.c | 29 +-- originator.h | 4 +- packet.h | 3 + routing.c | 2 + send.c | 1 + sysfs.c | 1 + translation-table.c | 90 ++++--- tvlv.c | 592 +++++++++++++++++++++++++++++++++++++++++++++ tvlv.h | 62 +++++ types.h | 8 +- 28 files changed, 1266 insertions(+), 1093 deletions(-) create mode 100644 log.h create mode 100644 tvlv.c create mode 100644 tvlv.h -- 2.1.3

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[B.A.T.M.A.N.] [PATCHv3 1/2] batman-adv: Check total_size when queueing fragments
by Sven Eckelmann 11 Jan '15

11 Jan '15

The fragmentation code was replaced in 9b3eab61754d74a93c9840c296013fe3b4a1b606 ("batman-adv: Receive fragmented packets and merge") by an implementation which handles the queueing+merging of fragments based on their size and the total_size of the non-fragmented packet. This total_size is announced by each fragment. The new implementation doesn't check if the the total_size information of the packets inside one chain is consistent. This is consistency check is recommended to allow using any of the packets in the queue to decide whether all fragments of a packet are received or not. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- This is only compile tested v3. - withdrawing from inclusion in maint - remove wrong example from the commit message v2: - proposed for maint - changed commit message slightly --- fragmentation.c | 7 +++++-- types.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/fragmentation.c b/fragmentation.c index 5251aa1..6e4c957 100644 --- a/fragmentation.c +++ b/fragmentation.c @@ -161,6 +161,7 @@ static bool batadv_frag_insert_packet(struct batadv_orig_node *orig_node, hlist_add_head(&frag_entry_new->list, &chain->head); chain->size = skb->len - hdr_size; chain->timestamp = jiffies; + chain->total_size = ntohs(frag_packet->total_size); ret = true; goto out; } @@ -195,9 +196,11 @@ static bool batadv_frag_insert_packet(struct batadv_orig_node *orig_node, out: if (chain->size > batadv_frag_size_limit() || - ntohs(frag_packet->total_size) > batadv_frag_size_limit()) { + chain->total_size != ntohs(frag_packet->total_size) || + chain->total_size > batadv_frag_size_limit()) { /* Clear chain if total size of either the list or the packet - * exceeds the maximum size of one merged packet. + * exceeds the maximum size of one merged packet. Don't allow + * packets to have different total_size. */ batadv_frag_clear_chain(&chain->head); chain->size = 0; diff --git a/types.h b/types.h index 462a70c..c4d7d24 100644 --- a/types.h +++ b/types.h @@ -132,6 +132,7 @@ struct batadv_orig_ifinfo { * @timestamp: time (jiffie) of last received fragment * @seqno: sequence number of the fragments in the list * @size: accumulated size of packets in list + * @total_size: expected size of the assembled packet */ struct batadv_frag_table_entry { struct hlist_head head; @@ -139,6 +140,7 @@ struct batadv_frag_table_entry { unsigned long timestamp; uint16_t seqno; uint16_t size; + uint16_t total_size; }; /** -- 2.1.3

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[B.A.T.M.A.N.] [PATCH next] batctl: fix misspelled words
by Antonio Quartulli 11 Jan '15

11 Jan '15

Reported-by: checkpatch Signed-off-by: Antonio Quartulli <antonio(a)meshcoding.com> --- packet.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/packet.h b/packet.h index facd1fe..b81fbbf 100644 --- a/packet.h +++ b/packet.h @@ -377,7 +377,7 @@ struct batadv_frag_packet { uint8_t reserved:4; uint8_t no:4; #else -#error "unknown bitfield endianess" +#error "unknown bitfield endianness" #endif uint8_t dest[ETH_ALEN]; uint8_t orig[ETH_ALEN]; @@ -453,7 +453,7 @@ struct batadv_coded_packet { * @src: address of the source * @dst: address of the destination * @tvlv_len: length of tvlv data following the unicast tvlv header - * @align: 2 bytes to align the header to a 4 byte boundry + * @align: 2 bytes to align the header to a 4 byte boundary */ struct batadv_unicast_tvlv_packet { uint8_t packet_type; -- 2.2.1

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[B.A.T.M.A.N.] pull request: batman-adv 20150108
by Antonio Quartulli 09 Jan '15

09 Jan '15

Hello David, this is a batch of patches intended for net-next. In this patchset you have mostly cleanups and small corrections to issues reported by checkpatch. One notable change is the addition of the DEBUG_FS dependency to the BATMAN_ADV_DEBUG symbol by Markus Pargmann. We add this dependency because all the information provided by the DEBUG feature is accessible only through debugfs. Please pull or let me know of any problem! Thanks a lot, Antonio The following changes since commit 44d84d7272e5848878a96029b8a8b6e86854f146: Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (2015-01-06 22:29:20 -0500) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batman-adv-for-davem for you to fetch changes up to 9535395640edb23ba5cec2abb026c4ee51899722: batman-adv: Kconfig, Add missing DEBUG_FS dependency (2015-01-07 22:17:11 +0100) ---------------------------------------------------------------- Included changes: - remove useless return in void functions - remove unused member 'primary_iface' from 'struct orig_node' - improve existing kernel doc - fix several checkpatch complaints - ensure socket's control block is cleared for received skbs - add missing DEBUG_FS dependency to BATMAN_ADV_DEBUG symbol ---------------------------------------------------------------- Antonio Quartulli (7): batman-adv: avoid useless return in void functions batman-adv: checkpatch - else is not generally useful after a break or return batman-adv: checkpatch - No space is necessary after a cast batman-adv: checkpatch - Please use a blank line after declarations batman-adv: checkpatch - Please don't use multiple blank lines batman-adv: checkpatch - remove unnecessary parentheses batman-adv: fix misspelled words Markus Pargmann (1): batman-adv: Kconfig, Add missing DEBUG_FS dependency Martin Hundebøll (5): batman-adv: kernel doc fixes for bat_iv_ogm.c batman-adv: kernel doc fixes for bridge_loop_avoidance.c batman-adv: kernel doc fix for distributed-arp-table.h batman-adv: kernel doc fixes for main.{c, h} batman-adv: clear control block of received socket buffers Simon Wunderlich (2): batman-adv: remove obsolete variable primary_iface from orig_node batman-adv: Start new development cycle net/batman-adv/Kconfig | 1 + net/batman-adv/bat_iv_ogm.c | 15 +++++++-------- net/batman-adv/bitarray.c | 1 - net/batman-adv/bitarray.h | 3 +-- net/batman-adv/bridge_loop_avoidance.c | 17 +++++++---------- net/batman-adv/debugfs.c | 2 +- net/batman-adv/distributed-arp-table.c | 1 + net/batman-adv/distributed-arp-table.h | 4 +--- net/batman-adv/fragmentation.c | 1 - net/batman-adv/fragmentation.h | 3 +-- net/batman-adv/gateway_client.c | 1 + net/batman-adv/main.c | 10 ++++++---- net/batman-adv/main.h | 15 +++++++-------- net/batman-adv/multicast.h | 3 --- net/batman-adv/network-coding.c | 3 +-- net/batman-adv/originator.c | 1 - net/batman-adv/originator.h | 1 - net/batman-adv/packet.h | 5 +++-- net/batman-adv/routing.c | 3 +-- net/batman-adv/soft-interface.c | 1 - net/batman-adv/sysfs.c | 1 - net/batman-adv/translation-table.c | 8 +++----- net/batman-adv/types.h | 4 +--- 23 files changed, 43 insertions(+), 61 deletions(-)

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B.A.T.M.A.N January 2015