Re: [PATCH 00/03][RESUBMIT] net: EtherIP tunnel driver
From: Joerg Roedel
Date: Mon Sep 25 2006 - 04:33:12 EST
On Sun, Sep 24, 2006 at 09:07:43PM -0400, Valdis.Kletnieks@xxxxxx wrote:
> On Sat, 23 Sep 2006 15:27:36 +0200, Joerg Roedel said:
> > (I assume you are speaking of the position of the 3 in the header). The
> > RFC is not clear at this point. It defines that the first 4 bits in the
> > 16 bit Ethernet header MUST be 0011. But it don't defines the
> > byteorder of that 16 bit word nor if the least or most significant bit
> > comes first.
> Unless stated otherwise, it's pretty safe to assume that all "on the wire" data
> mentioned in an RFC is in 'network byte order'. That's why hton*() and ntoh*()
> functions exist...
Yes. Thats what the OpenBSD people did :-)
The problem with the header is the bitorder. The OpenBSD people assumed
that the least significant bits come first in the 16-bit header.
> Is there something in the RFC that suggests that a byte order other than
> 'network order' is possible/acceptable there?
No. The RFC states nothing at all about byte- or bitorder. That is why
the RFC is ambigious at this point.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/