Re: [Madwifi-devel] 4-address support progress

[Jean L. <lo...@cl...>]

Hi Jonas,

Just a small comment about your error message. It comes from ath/if_ath.c, in 
the rx_tasklet. Maybe you stripped too much data from the frame because your 
message suggests that only 14 bytes are remaining, which is short indeed ! You 
should have a closer look at the frame arriving (size at arrival), and the 
stripping you apply for the 4-addr header. If you see 90 bytes frame in the air 
using airopeek, you should receive more or less the same size in the tasklet, I 
mean before you apply any kind of treatment.

> Previously I also expirienced odd behaviour with the LLC header. After doing some alignment with the ieee80211_frame_addr4 I've managed to get it working. Byte 30-32 in a packet always seems to be scrapped. 
> Any comments on this?

IMHO it sound like an alignment problem because with 3-addr frames, body is 
4-bytes aligned @ byte 24, whereas in 4-addr frames body should start at 30 
which is not 4-bytes aligned. Maybe Sam could elaborate on this...

Hope this helps !

Jean