Re: zd1211rw (2.6.26 sparc64): unaligned access (zd_mac_rx)

[Michael Buesch <mb@bu3sch.de>]

On Friday 28 November 2008 06:34:34 Shaddy Baddah wrote:
> case the same simple function replacement would not be OK. But I saw 
> several places where memcmp() is preferred to compare_ether_addr(), 
> which I assume indicates that mac80211 does not expect alignment of 
> 80211 packets passed to it.

The whole networking stack expects 4byte alignment and the driver _must_
make sure it is this way. Either by padding a constant number of bytes at the front
of each allocated SKB, or (if the alignment differs) use dynamic checks
for the lowest few bits of the pointer passed to mac80211.


-- 
Greetings Michael.