[Click] wifi llc handling problem in Click 1.5

[Mathias Kurth]

Hi,

It seems there is something wrong with the wifi llc header 
in wifi.h. It does not consist of 6 bytes as expected:

#define wifi_llc_header ((const uint8_t *) "\xAA\xAA\x03\x00\x00")

The result is that the org-code is not zero and most of the 
client station's wifi drivers do not accept the generated frame.

BTW: We've got another problem with the align element. It uses 
the method Packet::shift_data(), which moves the data part of 
the packet and adjusts the data and ether_header pointers according 
to the offset. But if ether_header() points to a valid Ethernet header, 
the header is not moved in memory so that ether_header() does not point to 
the header any more. Accessing ether_header() afterwards results 
obviously in trash data. 
Is it a bug? Or is the behavior intentional and we use the 
ether_header() in a wrong way?

Kind regards,
Mathias