B.A.T.M.A.N December 2017

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

18 participants
35 discussions

[B.A.T.M.A.N.] [PATCH 00/19] pull request for net-next: batman-adv 2017-12-20
by Simon Wunderlich 21 Dec '17

21 Dec '17

Hi David, here is the updated feature/cleanup pull request of batman-adv to go into net-next. Compared to batman-adv 2017-12-15 pull request, we have dropped the 'batman-adv: Add License-Filename to GPL-2.0 files' as per your suggestion. Please pull or let me know of any problem! Thank you, Simon The following changes since commit 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323: Linux 4.15-rc1 (2017-11-26 16:01:47 -0800) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batadv-next-for-davem-20171220 for you to fetch changes up to ff15c27c97303fbe5abc49c25c73ea299ab72d31: batman-adv: Add kernel-doc to externally visible functions (2017-12-15 17:29:24 +0100) ---------------------------------------------------------------- This feature/cleanup patchset includes the following patches: - bump version strings, by Simon Wunderlich - de-inline hash functions to save memory footprint, by Denys Vlasenko - Add License information to various files, by Sven Eckelmann (3 patches) - Change batman_adv.h from ISC to MIT, by Sven Eckelmann - Improve various includes, by Sven Eckelmann (5 patches) - Lots of kernel-doc work by Sven Eckelmann (8 patches) ---------------------------------------------------------------- Denys Vlasenko (1): batman-adv: Deinline batadv_orig_hash_find, save 7339 bytes Simon Wunderlich (1): batman-adv: Start new development cycle Sven Eckelmann (17): batman-adv: Add SPDX license identifier above copyright header batman-adv: Add SPDX license identifier to batman-adv.rst batman-adv: Add license header to Kconfig batman-adv: Change batman_adv.h license to MIT batman-adv: include gfp.h for GFP_* defines batman-adv: include build_bug.h for BUILD_BUG_ON define batman-adv: Include net.h for net_ratelimited_function batman-adv: include kobject.h for kobject_* functions batman-adv: Remove unused sched.h include batman-adv: Add missing kernel-doc to packet.h batman-adv: Use parentheses in function kernel-doc batman-adv: Use inline kernel-doc for enum/struct batman-adv: Fix kernel-doc references to struct members batman-adv: Add kernel-doc to structs in headers batman-adv: Add kernel-doc to enums in headers batman-adv: Add kernel-doc to functions in headers batman-adv: Add kernel-doc to externally visible functions Documentation/networking/batman-adv.rst | 2 + include/uapi/linux/batman_adv.h | 27 +- net/batman-adv/Kconfig | 17 + net/batman-adv/Makefile | 2 +- net/batman-adv/bat_algo.c | 35 +- net/batman-adv/bat_algo.h | 1 + net/batman-adv/bat_iv_ogm.c | 105 +- net/batman-adv/bat_iv_ogm.h | 1 + net/batman-adv/bat_v.c | 49 +- net/batman-adv/bat_v.h | 1 + net/batman-adv/bat_v_elp.c | 27 +- net/batman-adv/bat_v_elp.h | 1 + net/batman-adv/bat_v_ogm.c | 37 +- net/batman-adv/bat_v_ogm.h | 1 + net/batman-adv/bitarray.c | 3 +- net/batman-adv/bitarray.h | 10 +- net/batman-adv/bridge_loop_avoidance.c | 112 +- net/batman-adv/bridge_loop_avoidance.h | 5 +- net/batman-adv/debugfs.c | 30 +- net/batman-adv/debugfs.h | 1 + net/batman-adv/distributed-arp-table.c | 80 +- net/batman-adv/distributed-arp-table.h | 7 +- net/batman-adv/fragmentation.c | 23 +- net/batman-adv/fragmentation.h | 3 +- net/batman-adv/gateway_client.c | 65 +- net/batman-adv/gateway_client.h | 1 + net/batman-adv/gateway_common.c | 28 +- net/batman-adv/gateway_common.h | 6 +- net/batman-adv/hard-interface.c | 65 +- net/batman-adv/hard-interface.h | 59 +- net/batman-adv/hash.c | 20 +- net/batman-adv/hash.h | 28 +- net/batman-adv/icmp_socket.c | 15 +- net/batman-adv/icmp_socket.h | 1 + net/batman-adv/log.c | 19 + net/batman-adv/log.h | 62 +- net/batman-adv/main.c | 52 +- net/batman-adv/main.h | 123 +- net/batman-adv/multicast.c | 81 +- net/batman-adv/multicast.h | 17 +- net/batman-adv/netlink.c | 25 +- net/batman-adv/netlink.h | 1 + net/batman-adv/network-coding.c | 124 +- net/batman-adv/network-coding.h | 1 + net/batman-adv/originator.c | 154 ++- net/batman-adv/originator.h | 47 +- net/batman-adv/packet.h | 26 +- net/batman-adv/routing.c | 54 +- net/batman-adv/routing.h | 1 + net/batman-adv/send.c | 66 +- net/batman-adv/send.h | 5 +- net/batman-adv/soft-interface.c | 64 +- net/batman-adv/soft-interface.h | 1 + net/batman-adv/sysfs.c | 56 +- net/batman-adv/sysfs.h | 14 + net/batman-adv/tp_meter.c | 75 +- net/batman-adv/tp_meter.h | 1 + net/batman-adv/translation-table.c | 232 ++-- net/batman-adv/translation-table.h | 1 + net/batman-adv/tvlv.c | 41 +- net/batman-adv/tvlv.h | 1 + net/batman-adv/types.h | 1993 +++++++++++++++++++++---------- 62 files changed, 2852 insertions(+), 1353 deletions(-)

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[B.A.T.M.A.N.] Batman -adv no longer backwards compatible with kernels Pre -4.0???
by jorge power 18 Dec '17

18 Dec '17

I am running kernel 3.3.8 and trying to use batman adv ver 2017.4. I am getting error: net/batman-adv/hard-interface.c:101:28: error: 'const struct rtnl_link_ops' has no member named 'get_link_net' get_link_net is not part of rtnetlink.h in kernel v 3.3.8. Is 2017.4 not backwards compatible with older kernels per 4.0? get_link_net isnt added until kernel 4.0-rc1. I saw a previous message from 2016 saying: "Just to let everybody know: This patchset will break batman-adv compatibility for kernels older than 4.0 (see d37512a277dfb2cef8a578e25a3246f61399a55a):" Msg: https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2016-January/014306.html So was the backwards compatability broken intentionally so its no longer backwards compatible with older kernels? What can i do? -- Thanks Jorge

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[B.A.T.M.A.N.] weird alfred problem
by Gui Iribarren 16 Dec '17

16 Dec '17

found this situation today, on a node that otherwise works normal ("alfred -r 64" normally returns around ~50 lines of output) https://pastebin.com/7xkXUnsr any idea what could lead to this state? (after a reboot, everything was fine again) (copypaste follows for reference) root@giordano:~# uptime 09:56:49 up 4 days, 21:49, load average: 0.40, 0.13, 0.08 root@giordano:~# alfred -r 64 # returns immediately, tcpdump on br-lan doesn't see any packet out root@giordano:~# alfred -r 64 root@giordano:~# ps |grep alfred 1182 root 1044 S /usr/sbin/alfred -i br-lan -b bat0 root@giordano:~# tcpdump -i br-lan udp port 16962 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br-lan, link-type EN10MB (Ethernet), capture size 262144 bytes 09:46:40.945074 IP6 fe80::c24a:ff:fefc:38df.16962 > ip6-allnodes.16962: UDP, length 4 09:46:40.987477 IP6 fe80::c24a:ff:fefc:3a87.16962 > ip6-allnodes.16962: UDP, length 4 [...] i correctly see these two incoming announcements from the two masters in the network (giordano is slave) ### Tested changing mode to Master, no luck root@giordano:~# alfred -M master root@giordano:~# alfred -r 64 ### waited a minute or so, but never saw any outgoing announcement ### over br-lan (still seeing the other incoming announcements) root@giordano:~# /etc/init.d/alfred restart /etc/init.d/alfred: waiting 30 secs for br-lan address... /etc/init.d/alfred: starting alfred can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused root@giordano:~# ps |grep alfred 30114 root 1184 S grep alfred root@giordano:~# netstat -tunpl Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN 1726/dnsmasq tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 847/dropbear tcp 0 0 127.0.0.1:5303 0.0.0.0:* LISTEN 973/orangerpcd tcp 0 0 :::12865 :::* LISTEN 858/netserver tcp 0 0 :::80 :::* LISTEN 856/lighttpd tcp 0 0 :::53 :::* LISTEN 1726/dnsmasq tcp 0 0 :::22 :::* LISTEN 847/dropbear udp 0 0 0.0.0.0:53 0.0.0.0:* 1726/dnsmasq udp 0 0 0.0.0.0:67 0.0.0.0:* 1726/dnsmasq udp 0 0 :::53 :::* 1726/dnsmasq udp 0 0 ff02::2:6240 :::* 874/bmx6 udp 0 0 fe80::c24a:ff:fefc:4154:6240 :::* 874/bmx6 udp 0 0 ff02::2:6240 :::* 874/bmx6 udp 0 0 fe80::c24a:ff:fefc:4155:6240 :::* 874/bmx6 udp 0 0 ff02::2:6240 :::* 874/bmx6 udp 0 0 fe80::c24a:ff:fefc:4153:6240 :::* 874/bmx6 root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# ip a s br-lan 11: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether c2:4a:00:fc:41:54 brd ff:ff:ff:ff:ff:ff inet 10.5.0.31/21 brd 10.5.7.255 scope global br-lan valid_lft forever preferred_lft forever inet6 2801:1e8:2::5341:fc00/64 scope global valid_lft forever preferred_lft forever inet6 fe80::d4f4:2aff:feb8:ce2d/64 scope link valid_lft forever preferred_lft forever root@giordano:~# uptime 10:29:41 up 4 days, 22:22, load average: 0.08, 0.14, 0.10

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[B.A.T.M.A.N.] [RFC v3 0/4] flow_dissector: Provide basic batman-adv unicast handling
by Sven Eckelmann 16 Dec '17

16 Dec '17

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[B.A.T.M.A.N.] [RFC v2 0/6] flow_dissector: Provide basic batman-adv unicast handling
by Sven Eckelmann 15 Dec '17

15 Dec '17

Hi, we are currently starting to use batman-adv as mesh protocol on multicore embedded devices. These usually don't have a lot of CPU power per core but are reasonable fast when using multiple cores. It was noticed that sending was working very well but receiving was basically only using on CPU core per neighbor. The reason for that is format of the (normal) incoming packet: +--------------------+ | ip(v6)hdr | +--------------------+ | inner ethhdr | +--------------------+ | batadv unicast hdr | +--------------------+ | outer ethhdr | +--------------------+ The flow dissector will therefore stop after parsing the outer ethernet header and will not parse the actual ipv(4|6)/... header of the packet. Our assumption was now that it would help us to add minimal support to the flow dissector to jump over the batman-adv unicast and inner ethernet header (like in gre ETH_P_TEB). The patch was implemented in a slightly hacky way [1] and the results looked quite promising. Now we comes the actual "problematic" part. The packet format is currently only available in net/batman-adv/packet.h. I've guessed that it should be moved somewhere under include/ to make it accessible to the flow dissector in a "standard way". First we have to find the correct place for it. I am not aware of any standard for that - so I've grepped for some packet headers which are used by the dissector and found following files (most likely not a complete list): * linux/if_vlan.h * net/gre.h * net/tipc.h * uapi/linux/if_arp.h * uapi/linux/if_ether.h * uapi/linux/if_pppox.h * uapi/linux/ip.h * uapi/linux/ipv6.h * uapi/linux/mpls.h * uapi/linux/tcp.h So I would say that uapi/linux is the "winner" here. This would actually also helpful for userspace tools which either inject packets or monitor interfaces + dissect packets (for example batctl). Now to the actual filename. batman_adv.h is already used in the moment for the netlink definition and I would like to avoid that these two things are placed in the same file. A quick grep for "NL_NAME" showed me following names: * linux/nl802154.h * net/nl802154.h * uapi/linux/batman_adv.h * uapi/linux/devlink.h * uapi/linux/dlm_netlink.h * uapi/linux/fou.h * uapi/linux/if_macsec.h * uapi/linux/if_team.h * uapi/linux/ila.h * uapi/linux/ip_vs.h * uapi/linux/irda.h * uapi/linux/l2tp.h * uapi/linux/nfc.h * uapi/linux/nl80211.h * uapi/linux/psample.h * uapi/linux/seg6_genl.h * uapi/linux/taskstats.h * uapi/linux/tcp_metrics.h * uapi/linux/tipc_config.h * uapi/linux/tipc_netlink.h There doesn't seem to be any common way to do it - so I have to guess what the best names could be. I've decided (but please provide better alternatives) to use batadv_genl.h (for generic netlink stuff) and batadv.h (for the packet format). I would really appreciate it when you would provide feedback to the naming/placement of the files. Btw. the patches are currently based on the top of batadv/net-next [2] and this repository contains changes which still have to be submitted to net-next. Changes in v2: ============= * removed the batman-adv unicast packet header definition from flow_dissector.c * moved the batman-adv packet.h/uapi headers around to provide the correct definitions to flow_dissector.c Kind regards, Sven [1] https://patchwork.open-mesh.org/patch/17162/ [2] https://git.open-mesh.org/linux-merge.git/shortlog/refs/heads/batadv/net-ne… Sven Eckelmann (6): batman-adv: Change nl references to genl batman-adv: Rename batman-adv.h to batadv_genl.h batman-adv: Let packet.h include its headers directly batman-adv: Remove usage of BIT(x) in packet.h batman-adv: Convert packet.h to uapi header flow_dissector: Parse batman-adv unicast headers MAINTAINERS | 3 +- .../packet.h => include/uapi/linux/batadv.h | 32 ++++++++++++---------- include/uapi/linux/{batman_adv.h => batadv_genl.h} | 20 +++++++------- net/batman-adv/bat_algo.c | 2 +- net/batman-adv/bat_iv_ogm.c | 4 +-- net/batman-adv/bat_v.c | 4 +-- net/batman-adv/bat_v_elp.c | 2 +- net/batman-adv/bat_v_ogm.c | 2 +- net/batman-adv/bridge_loop_avoidance.c | 4 +-- net/batman-adv/distributed-arp-table.h | 2 +- net/batman-adv/fragmentation.c | 2 +- net/batman-adv/gateway_client.c | 4 +-- net/batman-adv/gateway_common.c | 2 +- net/batman-adv/hard-interface.c | 2 +- net/batman-adv/icmp_socket.c | 2 +- net/batman-adv/main.c | 6 ++-- net/batman-adv/main.h | 4 +-- net/batman-adv/multicast.c | 2 +- net/batman-adv/netlink.c | 14 ++++++---- net/batman-adv/network-coding.c | 2 +- net/batman-adv/originator.c | 2 +- net/batman-adv/routing.c | 2 +- net/batman-adv/send.h | 3 +- net/batman-adv/soft-interface.c | 2 +- net/batman-adv/sysfs.c | 2 +- net/batman-adv/tp_meter.c | 4 +-- net/batman-adv/translation-table.c | 4 +-- net/batman-adv/tvlv.c | 2 +- net/batman-adv/types.h | 5 ++-- net/core/flow_dissector.c | 30 ++++++++++++++++++++ 30 files changed, 101 insertions(+), 70 deletions(-) rename net/batman-adv/packet.h => include/uapi/linux/batadv.h (96%) rename include/uapi/linux/{batman_adv.h => batadv_genl.h} (95%) -- 2.11.0

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[B.A.T.M.A.N.] [PATCH 00/20] pull request for net-next: batman-adv 2017-12-15
by Simon Wunderlich 15 Dec '17

15 Dec '17

Hi David, here is a feature/cleanup pull request of batman-adv to go into net-next. Please pull or let me know of any problem! Thank you, Simon The following changes since commit 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323: Linux 4.15-rc1 (2017-11-26 16:01:47 -0800) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batadv-next-for-davem-20171215 for you to fetch changes up to 74027aab7f808eca71521b61d55fc06e040ec89e: batman-adv: Add kernel-doc to externally visible functions (2017-12-04 13:22:25 +0100) ---------------------------------------------------------------- This feature/cleanup patchset includes the following patches: - bump version strings, by Simon Wunderlich - de-inline hash functions to save memory footprint, by Denys Vlasenko - Add License information to various files, by Sven Eckelmann (4 patches) - Change batman_adv.h from ISC to MIT, by Sven Eckelmann - Improve various includes, by Sven Eckelmann (5 patches) - Lots of kernel-doc work by Sven Eckelmann (8 patches) ---------------------------------------------------------------- Denys Vlasenko (1): batman-adv: Deinline batadv_orig_hash_find, save 7339 bytes Simon Wunderlich (1): batman-adv: Start new development cycle Sven Eckelmann (18): batman-adv: Add License-Filename to GPL-2.0 files batman-adv: Add SPDX license identifier above copyright header batman-adv: Add SPDX license identifier to batman-adv.rst batman-adv: Add license header to Kconfig batman-adv: Change batman_adv.h license to MIT batman-adv: include gfp.h for GFP_* defines batman-adv: include build_bug.h for BUILD_BUG_ON define batman-adv: Include net.h for net_ratelimited_function batman-adv: include kobject.h for kobject_* functions batman-adv: Remove unused sched.h include batman-adv: Add missing kernel-doc to packet.h batman-adv: Use parentheses in function kernel-doc batman-adv: Use inline kernel-doc for enum/struct batman-adv: Fix kernel-doc references to struct members batman-adv: Add kernel-doc to structs in headers batman-adv: Add kernel-doc to enums in headers batman-adv: Add kernel-doc to functions in headers batman-adv: Add kernel-doc to externally visible functions Documentation/networking/batman-adv.rst | 2 + compat-include/linux/build_bug.h | 34 + include/uapi/linux/batman_adv.h | 27 +- net/batman-adv/Kconfig | 19 + net/batman-adv/Makefile | 3 +- net/batman-adv/bat_algo.c | 37 +- net/batman-adv/bat_algo.h | 3 + net/batman-adv/bat_iv_ogm.c | 107 +- net/batman-adv/bat_iv_ogm.h | 3 + net/batman-adv/bat_v.c | 51 +- net/batman-adv/bat_v.h | 3 + net/batman-adv/bat_v_elp.c | 29 +- net/batman-adv/bat_v_elp.h | 3 + net/batman-adv/bat_v_ogm.c | 39 +- net/batman-adv/bat_v_ogm.h | 3 + net/batman-adv/bitarray.c | 5 +- net/batman-adv/bitarray.h | 12 +- net/batman-adv/bridge_loop_avoidance.c | 114 +- net/batman-adv/bridge_loop_avoidance.h | 7 +- net/batman-adv/debugfs.c | 32 +- net/batman-adv/debugfs.h | 3 + net/batman-adv/distributed-arp-table.c | 82 +- net/batman-adv/distributed-arp-table.h | 9 +- net/batman-adv/fragmentation.c | 25 +- net/batman-adv/fragmentation.h | 5 +- net/batman-adv/gateway_client.c | 67 +- net/batman-adv/gateway_client.h | 3 + net/batman-adv/gateway_common.c | 30 +- net/batman-adv/gateway_common.h | 8 +- net/batman-adv/hard-interface.c | 67 +- net/batman-adv/hard-interface.h | 61 +- net/batman-adv/hash.c | 22 +- net/batman-adv/hash.h | 30 +- net/batman-adv/icmp_socket.c | 17 +- net/batman-adv/icmp_socket.h | 3 + net/batman-adv/log.c | 21 + net/batman-adv/log.h | 64 +- net/batman-adv/main.c | 54 +- net/batman-adv/main.h | 125 +- net/batman-adv/multicast.c | 83 +- net/batman-adv/multicast.h | 19 +- net/batman-adv/netlink.c | 27 +- net/batman-adv/netlink.h | 3 + net/batman-adv/network-coding.c | 126 +- net/batman-adv/network-coding.h | 3 + net/batman-adv/originator.c | 156 ++- net/batman-adv/originator.h | 49 +- net/batman-adv/packet.h | 28 +- net/batman-adv/routing.c | 56 +- net/batman-adv/routing.h | 3 + net/batman-adv/send.c | 68 +- net/batman-adv/send.h | 7 +- net/batman-adv/soft-interface.c | 66 +- net/batman-adv/soft-interface.h | 3 + net/batman-adv/sysfs.c | 58 +- net/batman-adv/sysfs.h | 16 + net/batman-adv/tp_meter.c | 77 +- net/batman-adv/tp_meter.h | 3 + net/batman-adv/translation-table.c | 234 ++-- net/batman-adv/translation-table.h | 3 + net/batman-adv/tvlv.c | 43 +- net/batman-adv/tvlv.h | 3 + net/batman-adv/types.h | 1995 +++++++++++++++++++++---------- 63 files changed, 3005 insertions(+), 1353 deletions(-) create mode 100644 compat-include/linux/build_bug.h

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[B.A.T.M.A.N.] [PATCH 0/4] pull request for net: batman-adv 2017-12-15
by Simon Wunderlich 15 Dec '17

15 Dec '17

Hi David, here are a couple of fixes which we would like to see integrated into net. Please pull or let me know of any problem! Thank you, Simon The following changes since commit 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323: Linux 4.15-rc1 (2017-11-26 16:01:47 -0800) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batadv-net-for-davem-20171215 for you to fetch changes up to 5ba7dcfe77037b67016263ea597a8b431692ecab: batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq (2017-12-04 11:47:33 +0100) ---------------------------------------------------------------- Here are some batman-adv bugfixes: - Initialize the fragment headers, by Sven Eckelmann - Fix a NULL check in BATMAN V, by Sven Eckelmann - Fix kernel doc for the time_setup() change, by Sven Eckelmann - Use the right lock in BATMAN IV OGM Update, by Sven Eckelmann ---------------------------------------------------------------- Sven Eckelmann (4): batman-adv: Always initialize fragment header priority batman-adv: Fix check of retrieved orig_gw in batadv_v_gw_is_eligible batman-adv: Fix kernel-doc for timer functions batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq net/batman-adv/bat_iv_ogm.c | 4 ++-- net/batman-adv/bat_v.c | 2 +- net/batman-adv/fragmentation.c | 2 ++ net/batman-adv/tp_meter.c | 4 ++-- 4 files changed, 7 insertions(+), 5 deletions(-)

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[B.A.T.M.A.N.] Switch backhaul based on connection
by Carlito Nueno 15 Dec '17

15 Dec '17

Hi all, I have nodes A, B, C. On all nodes, wifi and lan are bridged. Also, they are all connected via mesh. |---> node B ethernet <--> Node A <-- | | ---> node C Node A is the exit node - connected via ethernet cable and node B and node C are connected to A via mesh. So, when I connect node C via ethernet, does it start using ethernet as backhaul or still keeping mesh. that is, when a client connects via wifi to node C, does the traffic go via option 1 or option 2? option 1: client wifi <--> node C <--> mesh iface <--> node A <--> router option 2: client wifi <--> node C <--> ethernet eth0 <--> router Thanks

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[B.A.T.M.A.N.] Set preferred mesh backhaul link
by Carlito Nueno 09 Dec '17

09 Dec '17

Hi, I have two access points with 2.4GHz and 5GHz radios. Node A and Node B Both radios are mesh via batman-adv. I can see them with batctl if. Node A is server - batctl gw server Node B is client So here is my problem: When I check batctl gwl, it shows that it uses Node A's 2.4GHz interface. How can I set it so that it prefers 5GHz as mesh backhaul? Thanks!

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[B.A.T.M.A.N.] [PATCH 0/6] alfred: License cleanup
by Sven Eckelmann 08 Dec '17

08 Dec '17

Hi, the kernel community is currently trying to make the licensing status more clear in each file. This is mostly done by adding SPDX license identifiers and defining a set of rules how these license related information has to be stored. I've used this opportunity to also go through all files of alfred (for example with FSFE's `reuse lint`) and to annotate the files according to the "Linux licensing rules" and FSFE's REUSE practices. There are two things which could be seen as controversial: * change of batman_adv.h to the Linux preferred license (I am waiting for Acks in the batman-adv patchset) * explicitly mark remaining files as licensed under the GPL-2.0 Kind regards, Sven Sven Eckelmann (6): alfred: Rename LICENSE to Linux's LICENSES/preferred/GPL-2.0 alfred: Add License-Filename to GPL-2.0 files alfred: Import Linux's LICENSES/preferred/MIT alfred: Add SPDX license identifier above copyright header alfred: Mark remaining files as GPL-2.0 alfred: Change batman_adv.h license to MIT .gitattributes | 3 +++ CHANGELOG.license | 2 ++ LICENSE => LICENSES/preferred/GPL-2.0 | 13 +++++++++++++ LICENSES/preferred/MIT | 30 ++++++++++++++++++++++++++++++ Makefile | 2 ++ README.license | 2 ++ alfred.h | 5 +++-- batadv_query.c | 5 +++-- batadv_query.h | 5 +++-- batadv_querynl.c | 5 +++-- batadv_querynl.h | 5 +++-- batman_adv.h | 27 +++++++++++++++++---------- bitops.h | 1 + client.c | 5 +++-- debugfs.c | 5 +++-- debugfs.h | 5 +++-- gpsd/Makefile | 2 ++ gpsd/alfred-gpsd.c | 5 +++-- gpsd/alfred-gpsd.h | 5 +++-- gpsd/man/alfred-gpsd.8 | 2 ++ hash.c | 5 +++-- hash.h | 5 +++-- list.h | 5 +++-- main.c | 5 +++-- man/alfred.8 | 2 ++ netlink.c | 5 +++-- netlink.h | 5 +++-- netsock.c | 5 +++-- packet.h | 5 +++-- recv.c | 5 +++-- send.c | 5 +++-- server.c | 5 +++-- unix_sock.c | 5 +++-- util.c | 5 +++-- vis/Makefile | 2 ++ vis/man/batadv-vis.8 | 2 ++ vis/vis.c | 5 +++-- vis/vis.h | 5 +++-- 38 files changed, 155 insertions(+), 60 deletions(-) create mode 100644 CHANGELOG.license rename LICENSE => LICENSES/preferred/GPL-2.0 (97%) create mode 100644 LICENSES/preferred/MIT create mode 100644 README.license -- 2.11.0

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B.A.T.M.A.N December 2017