On 04/08/2014 02:57 PM, Gui Iribarren wrote:

Hello again friendly devs, here we are, after a long "running stable" hiatus, back into the bleeding edge for a ride \o/

running a small cloud of recent openwrt trunk (r40361) (OT: kmod-ath9k is running suprisingly smooth! yay!!) with kmod-batman-adv - 3.10.34+2014.1.0-2

and, well... i have bat news :P

1. yesterday i saw something vaguely reminiscent to the old OGM starving

issue: in a line of 4 guinea-pig nodes that flow through a river of DeltaLibre, the 4th node would get TQ=1 for the 1st node, and would not even ping it (i can't remember the result of batctl ping, maybe it did), even though the links were really solid (TQ>220 on every one-hop-link of the chain) (the 3rd node was seeing the 1st with TQ>200, and could batctl ping / ping perfectly) at that point i found out kmod-batman-adv was inadvertently compiled without log support :( so that's as much as i can report for now, i'll recompile with that enabled and follow up.

2. this morning, in 2-node cloud testbed at home, uptime=22hs, The

Bizarre Behaviour showed up and is sharing breakfast with me.

on one side, lying calmly on the floor...

root@rockm5:~# batctl o [B.A.T.M.A.N. adv 2014.1.0, MainIF/MAC: wlan0_adhoc.11/dc:9f:db:9c:37:54 (bat0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF]: Potential nexthops ... 64:70:02:ed:f8:ea 0.770s (255) 64:70:02:ed:f8:ea [wlan0_adhoc.11]: 64:70:02:ed:f8:ea (255) 02:00:49:ed:f8:e8 0.320s (255) 64:70:02:ed:f8:ea [wlan0_adhoc.11]: 64:70:02:ed:f8:ea (255) root@rockm5:~# batctl if wlan0_adhoc.11: active

 2 meters away, a TL-WDR3600 lurks...

root@planit:~# batctl o [B.A.T.M.A.N. adv 2014.1.0, MainIF/MAC: eth0.1.11/02:00:49:ed:f8:e8 (bat0 BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF]: Potential nexthops ... dc:9f:db:9c:37:54 0.360s (255) dc:9f:db:9c:37:54 [wlan1_adhoc.11]: dc:9f:db:9c:37:54 (255) root@planit:~# batctl if eth0.1.11: active wlan1_adhoc.11: active wlan0_adhoc.11: active

### rockm5 global ip over br-lan: gave its last breath root@planit:~# ip -6 r get 2a00:1508:1:f804::9d:3754/64 2a00:1508:1:f804::9d:3754 from :: dev br-lan src 2a00:1508:1:f804::ed:f8e8 metric 0 root@planit:~# ping 2a00:1508:1:f804::9d:3754 PING 2a00:1508:1:f804::9d:3754 (2a00:1508:1:f804::9d:3754): 56 data bytes --- 2a00:1508:1:f804::9d:3754 ping statistics --- 4 packets transmitted, 0 packets received, 100% packet loss

### rockm5 link-local over br-lan: feeding the daisies root@planit:~# ping6 fe80::de9f:dbff:fe9d:3754%br-lan PING fe80::de9f:dbff:fe9d:3754%br-lan(fe80::de9f:dbff:fe9d:3754) 56 data bytes --- fe80::de9f:dbff:fe9d:3754%br-lan ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2001ms

### lower level link-local works fine (avoiding batman-adv) root@planit:~# ping6 fe80::de9f:dbff:fe9c:3754%wlan1_adhoc.11 PING fe80::de9f:dbff:fe9c:3754%wlan1_adhoc.11(fe80::de9f:dbff:fe9c:3754) 56 data bytes 64 bytes from fe80::de9f:dbff:fe9c:3754: icmp_seq=1 ttl=64 time=2.70 ms 64 bytes from fe80::de9f:dbff:fe9c:3754: icmp_seq=2 ttl=64 time=1.39 ms --- fe80::de9f:dbff:fe9c:3754%wlan1_adhoc.11 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 1.398/2.053/2.708/0.655 ms

### batctl ping to rockm5 enjoys excellent health root@planit:~# batctl ping dc:9f:db:9c:37:54 PING dc:9f:db:9c:37:54 (dc:9f:db:9c:37:54) 20(48) bytes of data 20 bytes from dc:9f:db:9c:37:54 icmp_seq=1 ttl=50 time=1.16 ms 20 bytes from dc:9f:db:9c:37:54 icmp_seq=2 ttl=50 time=0.90 ms 20 bytes from dc:9f:db:9c:37:54 icmp_seq=3 ttl=50 time=0.90 ms ^C--- dc:9f:db:9c:37:54 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss rtt min/avg/max/mdev = 0.902/0.989/1.162/0.122 ms

well, as said before, i have no "batctl l" output to show, but will collect and write chapter two. With a bit of luck, what i described so far rings a bell on someone, and can give an early insight (maybe it's due to the way we are using vlans?)

Mh... speaking of which, maybe there's something TT-fishy about vlans?

root@rockm5:~# batctl tl Locally retrieved addresses (from bat0) announced via TT (TTVN: 2): Client VID Flags Last seen (CRC ) * rockm5_br-lan -1 [......] 3.220 (0xbfe4b7db) * rockm5_bat0 -1 [.P....] 0.000 (0xbfe4b7db) * rockm5_bat0 0 [.P....] 0.000 (0x453da959) root@rockm5:~# batctl tg Globally announced TT entries received via the mesh bat0 Client VID (TTVN) Originator (Curr TTVN) (CRC ) Flags * planit_bat0 -1 ( 2) via planit_eth0.1.11 ( 2) (0x8f4039e4) [....] * planit_bat0 0 ( 2) via planit_eth0.1.11 ( 2) (0x29283c0f) [....]

root@planit:~# batctl tl Locally retrieved addresses (from bat0) announced via TT (TTVN: 2): Client VID Flags Last seen (CRC ) * planit_bat0 -1 [.P....] 0.000 (0x8f4039e4) * planit_bat0 0 [.P....] 0.000 (0x29283c0f) root@planit:~# batctl tg Globally announced TT entries received via the mesh bat0 Client VID (TTVN) Originator (Curr TTVN) (CRC ) Flags * rockm5_br-lan -1 ( 2) via rockm5_wlan0_adhoc ( 2) (0xbfe4b7db) [....] * rockm5_bat0 -1 ( 1) via rockm5_wlan0_adhoc ( 2) (0xbfe4b7db) [....] * rockm5_bat0 0 ( 2) via rockm5_wlan0_adhoc ( 2) (0x453da959) [....]

i understand vid -1 means "no tag"... but then, what's vid=0 then?

relevant bat-hosts dc:9f:db:9d:37:54 rockm5_br-lan 96:65:b0:4c:6b:44 rockm5_bat0 dc:9f:db:9c:37:54 rockm5_wlan0_adhoc 92:5c:d9:b1:8f:df planit_bat0 02:00:49:ed:f8:e8 planit_eth0.1.11

(maybe its because routing_algo = BATMAN_IV?) (maybe the rewritten code is designed to work this way? yay!) (maybe it's our ugly hacky ebtables droppings / anygw magic that are interacting badly in some way? can describe them in detail next time)

i must say tho, that this was running fine yesterday, and it broke spontaneously without any manual intervention or config change.

oh, BLA2 and DAT are disabled on all nodes.

thanks as always, and hope a giggle cheers up your day :)

gui