Re: conflicting alignment requirements

[Ralf Baechle <ralf@xxxxxxxxxxx>]

On Tue, Jul 31, 2001 at 09:12:22PM +0400, kuznet@xxxxxxxxxxxxx wrote:

> > copy the packet to a fresh skb (rx_copybreak = 0), the packet will
> > traverse the net layer with unalinged IP header.
> 
> Doing this for an arch which traps wrong alignment, you can expect
> everything (except for crash, which could be bug).

Afaik all such architectures have exception handlers to complete the access
transparently in software.  Such an access is very slow so where more
frequent unaligned accesses are expected there are get_unaligned() and
put_unaligned().

  Ralf