hi,
this mail would be my first post to the list so for a starter i would like to thank to the project owners, contributors and the community for the great work being done and appreciate the effort and time being spent for this piece of software like it is said software is hard.
the main reason i am writing is as follows; for about 10 months i have been experimenting with batman on various platforms my current platform is ti's beagleboneblack wireless board running openwrt distribution (the required bbbw dtb and wl1835 driver firmware applied) with batman enabled and configured. with this high level description of the components i am able to build a mesh network 6 nodes (i.e. bbbw cards) but as soon as i introduce a 7th card into the network batman mesh becomes unresponsive as the last seen times start to increase and finally, after 200 seconds all the nodes drops from the originator and neighbor tables which could be inspected with < :#batctl o> and < :#batctl n> commands respectively. all the cards are on the same table and well powered.
i would like to give some details about the configurations of the cards which are identical except the ip addresses
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# cat /etc/config/wireless
config wifi-device 'radio0' option type 'mac80211' option channel '11' option hwmode '11g' option path 'platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0' option htmode 'HT20' option disabled '1'
config wifi-iface 'default_radio0' option device 'radio0' option network 'wifi' option mode 'mesh' option ssid 'my-mesh-network' option mesh_id '02:12:34:56:78:9A'
config wifi-device 'radio1' option type 'mac80211' option channel '3' option hwmode '11n' option path 'platform/ocp/47810000.mmc/mmc_host/mmc2/mmc2:0001/mmc2:0001:2/wl18xx.0.auto' option htmode 'HT40+' option disabled '0'
config wifi-iface 'wmesh' option device 'radio1' option ifname 'adhoc0' option network 'bat0_hardif_wlan' option mode 'mesh' option ssid 'mesh' option mesh_fwding '0' option 'mcast_rate' '18000' option bssid '02:12:34:56:78:9A'
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# cat /etc/config/network
config interface 'loopback' option ifname 'lo' option proto 'static' option ipaddr '127.0.0.1' option netmask '255.0.0.0'
config globals 'globals' option ula_prefix 'fd99:5d77:fecc::/48'
config interface 'bat0_hardif_wlan' option ifname 'adhoc0' option mtu '2304' option proto 'batadv' option mesh 'bat0' option ipaddr '192.168.3.100' option netmask '255.255.255.0' option routing_algo 'BATMAN_IV' option ap_isolation '1'
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# cat /etc/config/batman-adv
config 'mesh' 'bat0' option 'aggregated_ogms' 1 option 'ap_isolation' 1 #option 'bonding' 0 option 'fragmentation' 1 #option 'gw_bandwidth' '10000/2000' option 'gw_mode' 'off' #option 'gw_sel_class' 20 option 'log_level' 15 option 'orig_interval' 1000 option 'bridge_loop_avoidance' 0 option 'distributed_arp_table' 0 option 'multicast_mode' 0 optiion 'network_coding' 0 option 'hop_penalty' 15 #option 'isolation_mark' '0x00000000/0x00000000'
# yet another batX instance # config 'mesh' 'bat5'
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# ifconfig adhoc0 Link encap:Ethernet HWaddr 38:D2:69:DC:DE:43 inet6 addr: fe80::3ad2:69ff:fedc:de43/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:2304 Metric:1 RX packets:5924 errors:0 dropped:0 overruns:0 frame:0 TX packets:3707 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:370268 (361.5 KiB) TX bytes:327332 (319.6 KiB)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:480 errors:0 dropped:0 overruns:0 frame:0 TX packets:480 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:39360 (38.4 KiB) TX bytes:39360 (38.4 KiB)
///////////////////// 6 node setup with 5 direct neighbors ///////////////////// root@OpenWrt:/# batctl o [B.A.T.M.A.N. adv openwrt-2019.0-0, MainIF/MAC: adhoc0/38:d2:69:dc:de:43 (bat0/6a:40:89:aa:93:a0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF] 38:d2:69:e0:c3:0d 0.010s (218) 38:d2:69:e0:5e:de [ adhoc0] 38:d2:69:e0:c3:0d 0.010s (211) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:c3:0d 0.010s (214) 38:d2:69:e0:8f:87 [ adhoc0] 38:d2:69:e0:c3:0d 0.010s (222) 38:d2:69:e0:71:73 [ adhoc0] * 38:d2:69:e0:c3:0d 0.010s (255) 38:d2:69:e0:c3:0d [ adhoc0] 98:84:e3:f0:a5:38 0.700s (225) 38:d2:69:e0:c3:0d [ adhoc0] 98:84:e3:f0:a5:38 0.700s (221) 38:d2:69:e0:5e:de [ adhoc0] 98:84:e3:f0:a5:38 0.700s (225) 38:d2:69:e0:71:73 [ adhoc0] 98:84:e3:f0:a5:38 0.700s (222) 38:d2:69:e0:8f:87 [ adhoc0] * 98:84:e3:f0:a5:38 0.700s (247) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:8f:87 0.030s (214) 38:d2:69:e0:c3:0d [ adhoc0] 38:d2:69:e0:8f:87 0.030s (221) 38:d2:69:e0:5e:de [ adhoc0] 38:d2:69:e0:8f:87 0.030s (217) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:8f:87 0.030s (225) 38:d2:69:e0:71:73 [ adhoc0] * 38:d2:69:e0:8f:87 0.030s (255) 38:d2:69:e0:8f:87 [ adhoc0] 38:d2:69:e0:71:73 0.460s (200) 38:d2:69:e0:c3:0d [ adhoc0] 38:d2:69:e0:71:73 0.460s (197) 38:d2:69:e0:5e:de [ adhoc0] 38:d2:69:e0:71:73 0.460s (200) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:71:73 0.460s (210) 38:d2:69:e0:8f:87 [ adhoc0] * 38:d2:69:e0:71:73 0.460s (255) 38:d2:69:e0:71:73 [ adhoc0] 38:d2:69:e0:5e:de 0.180s (225) 38:d2:69:e0:c3:0d [ adhoc0] 38:d2:69:e0:5e:de 0.180s (215) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:5e:de 0.180s (218) 38:d2:69:e0:8f:87 [ adhoc0] 38:d2:69:e0:5e:de 0.180s (225) 38:d2:69:e0:71:73 [ adhoc0] * 38:d2:69:e0:5e:de 0.180s (251) 38:d2:69:e0:5e:de [ adhoc0]
root@OpenWrt:/# batctl n [B.A.T.M.A.N. adv openwrt-2019.0-0, MainIF/MAC: adhoc0/38:d2:69:dc:de:43 (bat0/6a:40:89:aa:93:a0 BATMAN_IV)] IF Neighbor last-seen adhoc0 38:d2:69:e0:c3:0d 0.160s adhoc0 38:d2:69:e0:5e:de 0.320s adhoc0 98:84:e3:f0:a5:38 0.830s adhoc0 38:d2:69:e0:8f:87 0.030s adhoc0 38:d2:69:e0:71:73 0.630s
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# iw dev adhoc0 station dump Station 38:d2:69:e0:71:73 (on adhoc0) inactive time: 80 ms rx bytes: 1775733 rx packets: 22623 tx bytes: 539 tx packets: 7 tx retries: 0 tx failed: 0 rx drop misc: 12797 signal: 0 dBm signal avg: -21 dBm tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 27.343Mbps mesh llid: 32171 mesh plid: 13983 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 491 seconds Station 38:d2:69:e0:8f:87 (on adhoc0) inactive time: 20 ms rx bytes: 1693321 rx packets: 21651 tx bytes: 329 tx packets: 4 tx retries: 0 tx failed: 0 rx drop misc: 12018 signal: 0 dBm signal avg: -25 dBm Toffset: 18446744071111214636 us tx bitrate: 1.0 MBit/s expected throughput: 121.93Mbps mesh llid: 30373 mesh plid: 56485 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: UNKNOWN mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 489 seconds Station 98:84:e3:f0:a5:38 (on adhoc0) inactive time: 50 ms rx bytes: 1640523 rx packets: 21040 tx bytes: 716 tx packets: 8 tx retries: 0 tx failed: 0 rx drop misc: 11384 signal: 0 dBm signal avg: -27 dBm tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 140.625Mbps mesh llid: 25917 mesh plid: 65422 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 487 seconds Station 38:d2:69:e0:5e:de (on adhoc0) inactive time: 70 ms rx bytes: 1580918 rx packets: 20324 tx bytes: 480 tx packets: 6 tx retries: 0 tx failed: 0 rx drop misc: 10662 signal: 0 dBm signal avg: -34 dBm Toffset: 18446744071107370820 us tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 140.625Mbps mesh llid: 52541 mesh plid: 55210 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 485 seconds Station 38:d2:69:e0:c3:0d (on adhoc0) inactive time: 60 ms rx bytes: 1605955 rx packets: 20603 tx bytes: 480 tx packets: 6 tx retries: 0 tx failed: 0 rx drop misc: 11110 signal: 0 dBm signal avg: -26 dBm Toffset: 18446744071104088264 us tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 140.625Mbps mesh llid: 36132 mesh plid: 36029 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 481 seconds
//////////////////////////////////////////////////////////////////////////////// at this point everything is fine i can level 2 ping each neighbor etc. but when i boot up the 6th neighbor (i.e. 7th node in the mesh network) last-seen values start to increase and finally nodes disappear
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# batctl o [B.A.T.M.A.N. adv openwrt-2019.0-0, MainIF/MAC: adhoc0/38:d2:69:dc:de:43 (bat0/6a:40:89:aa:93:a0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF] 38:d2:69:e0:c3:0d 97.200s (225) 38:d2:69:e0:5e:de [ adhoc0] 38:d2:69:e0:c3:0d 97.200s (222) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:c3:0d 97.200s (214) 38:d2:69:e0:8f:87 [ adhoc0] 38:d2:69:e0:c3:0d 97.200s (225) 38:d2:69:e0:71:73 [ adhoc0] * 38:d2:69:e0:c3:0d 97.200s (251) 38:d2:69:e0:c3:0d [ adhoc0] 98:84:e3:f0:a5:38 100.970s (221) 38:d2:69:e0:c3:0d [ adhoc0] 98:84:e3:f0:a5:38 100.970s (225) 38:d2:69:e0:5e:de [ adhoc0] 98:84:e3:f0:a5:38 100.970s (225) 38:d2:69:e0:71:73 [ adhoc0] 98:84:e3:f0:a5:38 100.970s (214) 38:d2:69:e0:8f:87 [ adhoc0] * 98:84:e3:f0:a5:38 100.970s (255) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:8f:87 100.170s (221) 38:d2:69:e0:c3:0d [ adhoc0] 38:d2:69:e0:8f:87 100.170s (225) 38:d2:69:e0:5e:de [ adhoc0] 38:d2:69:e0:8f:87 100.170s (225) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:8f:87 100.170s (225) 38:d2:69:e0:71:73 [ adhoc0] * 38:d2:69:e0:8f:87 100.170s (255) 38:d2:69:e0:8f:87 [ adhoc0] 38:d2:69:e0:71:73 18.750s ( 0) 38:d2:69:e0:c3:0d [ adhoc0] 38:d2:69:e0:71:73 18.750s ( 0) 38:d2:69:e0:5e:de [ adhoc0] 38:d2:69:e0:71:73 18.750s ( 0) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:71:73 18.750s ( 0) 38:d2:69:e0:8f:87 [ adhoc0] * 38:d2:69:e0:71:73 18.750s ( 12) 38:d2:69:e0:71:73 [ adhoc0] 38:d2:69:e0:5e:de 93.200s (218) 38:d2:69:e0:c3:0d [ adhoc0] 38:d2:69:e0:5e:de 93.200s ( 0) 98:84:e3:f0:a5:38 [ adhoc0] 38:d2:69:e0:5e:de 93.200s ( 0) 38:d2:69:e0:8f:87 [ adhoc0] 38:d2:69:e0:5e:de 93.200s (211) 38:d2:69:e0:71:73 [ adhoc0] * 38:d2:69:e0:5e:de 93.200s (247) 38:d2:69:e0:5e:de [ adhoc0]
root@OpenWrt:/# batctl n [B.A.T.M.A.N. adv openwrt-2019.0-0, MainIF/MAC: adhoc0/38:d2:69:dc:de:43 (bat0/6a:40:89:aa:93:a0 BATMAN_IV)] IF Neighbor last-seen adhoc0 38:d2:69:e0:c3:0d 121.780s adhoc0 38:d2:69:e0:5e:de 117.780s adhoc0 98:84:e3:f0:a5:38 125.560s adhoc0 38:d2:69:e0:8f:87 124.750s adhoc0 38:d2:69:e0:71:73 43.210s
////////////////////////////////////////////////////////////////////////////////
at this point the neighbors are giong to dissapear after 200 sec timeout but the command < :#iw dev adhoc0 station dump> list all the nodes plink established
//////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# iw dev adhoc0 station dump Station 38:d2:69:e0:71:73 (on adhoc0) inactive time: 90 ms rx bytes: 3864389 rx packets: 49751 tx bytes: 539 tx packets: 7 tx retries: 0 tx failed: 0 rx drop misc: 26681 signal: 0 dBm signal avg: -21 dBm tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 27.343Mbps mesh llid: 32171 mesh plid: 13983 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 1159 seconds Station 38:d2:69:e0:8f:87 (on adhoc0) inactive time: 30 ms rx bytes: 3690399 rx packets: 47696 tx bytes: 329 tx packets: 4 tx retries: 0 tx failed: 0 rx drop misc: 24935 signal: 0 dBm signal avg: -24 dBm tx bitrate: 1.0 MBit/s expected throughput: 3.906Mbps mesh llid: 30373 mesh plid: 56485 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: UNKNOWN mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 1157 seconds Station 98:84:e3:f0:a5:38 (on adhoc0) inactive time: 60 ms rx bytes: 3622627 rx packets: 46907 tx bytes: 716 tx packets: 8 tx retries: 0 tx failed: 0 rx drop misc: 24144 signal: 0 dBm signal avg: -25 dBm Toffset: 18446744071109913820 us tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 140.625Mbps mesh llid: 25917 mesh plid: 65422 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 1155 seconds Station 38:d2:69:e0:5e:de (on adhoc0) inactive time: 80 ms rx bytes: 3489728 rx packets: 45344 tx bytes: 480 tx packets: 6 tx retries: 0 tx failed: 0 rx drop misc: 22514 signal: 0 dBm signal avg: -31 dBm Toffset: 18446744071107371412 us tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 140.625Mbps mesh llid: 52541 mesh plid: 55210 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 1153 seconds Station 38:d2:69:e0:c3:0d (on adhoc0) inactive time: 80 ms rx bytes: 3585647 rx packets: 46475 tx bytes: 480 tx packets: 6 tx retries: 0 tx failed: 0 rx drop misc: 23601 signal: 0 dBm signal avg: -25 dBm Toffset: 18446744071104087603 us tx bitrate: 72.2 MBit/s MCS 7 short GI rx bitrate: 65.0 MBit/s MCS 7 expected throughput: 140.625Mbps mesh llid: 36132 mesh plid: 36029 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: ACTIVE mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 1149 seconds Station 38:d2:69:cd:86:96 (on adhoc0) inactive time: 60 ms rx bytes: 195354 rx packets: 3004 tx bytes: 270 tx packets: 3 tx retries: 0 tx failed: 0 rx drop misc: 3 signal: 0 dBm signal avg: -41 dBm Toffset: 18446744070115910174 us tx bitrate: 1.0 MBit/s expected throughput: 70.312Mbps mesh llid: 25879 mesh plid: 29955 mesh plink: ESTAB mesh local PS mode: ACTIVE mesh peer PS mode: UNKNOWN mesh non-peer PS mode: ACTIVE authorized: yes authenticated: yes associated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short slot time:yes connected time: 161 seconds
////////////////////////////////////////////////////////////////////////////////
and finally //////////////////////////////////////////////////////////////////////////////// root@OpenWrt:/# batctl o [B.A.T.M.A.N. adv openwrt-2019.0-0, MainIF/MAC: adhoc0/38:d2:69:dc:de:43 (bat0/6a:40:89:aa:93:a0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF]
////////////////////////////////////////////////////////////////////////////////
i researched for a while for the cause with no avail. i would appreciate any kind of help to point me to the right direction to solve this.
ps: i can provide more detail explanation, configuration and logs i you could tell me which
thank you in advance.
On Sunday, 24 February 2019 21:48:18 CET umut deniz wrote:
my current platform is ti's beagleboneblack wireless board running openwrt distribution (the required bbbw dtb and wl1835 driver firmware applied) with batman enabled and configured. with this high level description of the components i am able to build a mesh network 6 nodes (i.e. bbbw cards) but as soon as i introduce a 7th card into the network batman mesh becomes unresponsive as the last seen times start to increase and finally, after 200 seconds all the nodes drops from the originator and neighbor tables which could be inspected with < :#batctl o> and < :#batctl n> commands respectively. all the cards are on the same table and well powered.
[...]
i researched for a while for the cause with no avail. i would appreciate any kind of help to point me to the right direction to solve this.
Please don't use things like wl1835 when building larger meshes. It is known that these kind of devices only support a very limited amount of peers and are most of the time only (more or less) stable in management mode (client). And afaik, the wlcore driver (like other TI wirelss drivers) is also orphaned.
If you're wifi link/driver doesn't work, batman-adv can also do nothing to fix it.
Rule of thumb: If it is a USB/SDIO wifi device, start waving your hands in the air, scream and run away. This strategy is also helpful in other wifi related situations.
Kind regards, Sven
Hello Sven,
Thank your for your swift reply and advice. As you said TI supports limited number of peers with its driver and hardware in mesh mode. According to TI documentation it is 32 nodes. The question bogging my mind is how could the < :#iw dev adhoc0 station dump > command return 6 active and plink established nodes (with inactive times around 80ms) while batman-adv's last-seen is increasing till timeout occurs on all neighbors and after timeout iw station dump still reports the same active stations (with inactive times around 80ms). Am I missing something to debug or a log to look in to or a configuration tied with batman-adv needed to be made.
Thank you and best regards
On Mon, Feb 25, 2019 at 12:22 AM Sven Eckelmann sven@narfation.org wrote:
On Sunday, 24 February 2019 21:48:18 CET umut deniz wrote:
my current platform is ti's beagleboneblack wireless board running openwrt distribution (the required bbbw dtb and wl1835 driver firmware applied) with batman enabled and configured. with this high level description of the components i am able to build a mesh network 6 nodes (i.e. bbbw cards) but as soon as i introduce a 7th card into the network batman mesh becomes unresponsive as the last seen times start to increase and finally, after 200 seconds all the nodes drops from the originator and neighbor tables which could be inspected with < :#batctl o> and < :#batctl n> commands respectively. all the cards are on the same table and well powered.
[...]
i researched for a while for the cause with no avail. i would appreciate any kind of help to point me to the right direction to solve this.
Please don't use things like wl1835 when building larger meshes. It is known that these kind of devices only support a very limited amount of peers and are most of the time only (more or less) stable in management mode (client). And afaik, the wlcore driver (like other TI wirelss drivers) is also orphaned.
If you're wifi link/driver doesn't work, batman-adv can also do nothing to fix it.
Rule of thumb: If it is a USB/SDIO wifi device, start waving your hands in the air, scream and run away. This strategy is also helpful in other wifi related situations.
Kind regards, Sven
On Monday, 25 February 2019 15:06:21 CET umut deniz wrote: [...]
Thank your for your swift reply and advice. As you said TI supports limited number of peers with its driver and hardware in mesh mode. According to TI documentation it is 32 nodes.
I think this is the number of nodes in a complete 802.11s mesh. This doesn't mean that it supports these number of direct peers the driver can't even represent more than 16 direct peers/links in its structures. I heard something of 10 peers supported by the firmware when running in AP mode. Most likely lower or equal in meshpoint mode.
And maybe it also needs some special peers to work correctly. Wouldn't be the first firmware which needs such kind of hacks.
The question bogging my mind is how could the < :#iw dev adhoc0 station dump > command return 6 active and plink established nodes (with inactive times around 80ms) while batman-adv's last-seen is increasing till timeout occurs on all neighbors and after timeout iw station dump still reports the same active stations (with inactive times around 80ms). Am I missing something to debug or a log to look in to or a configuration tied with batman-adv needed to be made.
If the last time increases, this means that the lower link doesn't do correct broadcast anymore between the peers. The numbers you see in iw can be from any kind of frame (there might be exceptions - check the ieee80211 subsystem for details).
This can either be a bug in the TI firmware or driver or maybe this is their expected behavior when going over a specific number of entries. But there is nothing batman-adv can do when the broadcast doesn't work correctly. B.A.T.M.A.N. IV's metric is build around the broadcast frames and also B.A.T.M.A.N. V needs them for local discovery.
Kind regards, Sven
On Mon, Feb 25, 2019 at 05:06:21PM +0300, umut deniz wrote:
Hello Sven,
Thank your for your swift reply and advice. As you said TI supports limited number of peers with its driver and hardware in mesh mode. According to TI documentation it is 32 nodes. The question bogging my mind is how could the < :#iw dev adhoc0 station dump > command return 6 active and plink established nodes (with inactive times around 80ms) while batman-adv's last-seen is increasing till timeout occurs on all neighbors and after timeout iw station dump still reports the same active stations (with inactive times around 80ms). Am I missing something to debug or a log to look in to or a configuration tied with batman-adv needed to be made.
Disable batman-adv and try a broadcast ping like "ping6 ff02::1%adhoc0" and unicast ones. If that works with 6 nodes, but not with 7 ones then you know it's not batman-adv's fault.
Regards, Linus
On Monday, 25 February 2019 17:00:46 CET Linus Lüssing wrote: [...]
Disable batman-adv and try a broadcast ping like "ping6 ff02::1%adhoc0" and unicast ones. If that works with 6 nodes, but not with 7 ones then you know it's not batman-adv's fault.
This is only true when the driver/firmware handles multicast frames as broadcasts. I have already seen some of them converting the multicast/unicast frames to unicast frames in such situations. This also broke OGM detection on batman-adv because we only accept broadcast OGMs received as broadcast - otherwise the OGM metric stuff wouldn't make any sense at all.
And you have to do this in both directions to check whether bidirectional links are available. A ping6 answer (icmp echo reply) is unicast - and you also need the check the broadcast stuff in both direction.
But yes, when even this test fails then it is definitely not batman-adv's fault. Just keep in mind that a working ping6 doesn't have to mean that it is batman-adv's fault.
Kind regard, Sven
b.a.t.m.a.n@lists.open-mesh.org
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Linus Lüssing -
Sven Eckelmann -
umut deniz