> > 4) Pings don't go, because MPs don't answer ARP requests sent to it.
> > Haven't tested for the root cause yet.
>
> Maybe some multicast issue?
ARP requests get filtered out by LMAC.
Can anyone explain why? My 802.11s comprehension is quite weak.
Here's the packet:
IEEE 802.11 Data, Flags: ......FT
Type/Subtype: Data (0x20)
Frame Control: 0x0308 (Normal)
Version: 0
Type: Data frame (2)
Subtype: 0
Flags: 0x3
DS status: WDS (AP to AP) or Mesh (MP to MP) Frame (To DS: 1 From DS: 1) (0x03)
.... .0.. = More Fragments: This is the last fragment
.... 0... = Retry: Frame is not being retransmitted
...0 .... = PWR MGT: STA will stay up
..0. .... = More Data: No data buffered
.0.. .... = Protected flag: Data is not protected
0... .... = Order flag: Not strictly ordered
Duration: 0
Receiver address: Broadcast (ff:ff:ff:ff:ff:ff)
Transmitter address: NokiaDan_9b:ee:6c (00:1d:6e:9b:ee:6c)
Destination address: Broadcast (ff:ff:ff:ff:ff:ff)
Fragment number: 0
Sequence number: 2
Source address: NokiaDan_9b:ee:6c (00:1d:6e:9b:ee:6c)
Mesh Header
Address Extension 0
Mesh TTL: 5
Mesh Seq: 0
Logical-Link Control
DSAP: SNAP (0xaa)
IG Bit: Individual
SSAP: SNAP (0xaa)
CR Bit: Command
Control field: U, func=UI (0x03)
000. 00.. = Command: Unnumbered Information (0x00)
.... ..11 = Frame type: Unnumbered frame (0x03)
Organization Code: Encapsulated Ethernet (0x000000)
Type: ARP (0x0806)
Address Resolution Protocol (request)
Hardware type: Ethernet (0x0001)
Protocol type: IP (0x0800)
Hardware size: 6
Protocol size: 4
Opcode: request (0x0001)
Sender MAC address: NokiaDan_9b:ee:6c (00:1d:6e:9b:ee:6c)
Sender IP address: 192.168.4.13 (192.168.4.13)
Target MAC address: 00:00:00_00:00:00 (00:00:00:00:00:00)
Target IP address: 192.168.4.14 (192.168.4.14)
I'm tempted to do something like this in p54_setup_mac:
- case NL80211_IFTYPE_MESH_POINT:
mode = P54_FILTER_TYPE_IBSS;
break;
+ case NL80211_IFTYPE_MESH_POINT:
+ mode = P54_FILTER_TYPE_IBSS | P54_FILTER_TYPE_TRANSPARENT;
+ break;
But I guess that's bad solution, at least for pci/usb drivers.
Christian, Johannes, what would you suggest?
--
Thanks.
-- Max
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