Re: NKEs on Intel-based Macs
Re: NKEs on Intel-based Macs
- Subject: Re: NKEs on Intel-based Macs
- From: David A Rowland <email@hidden>
- Date: Thu, 3 Aug 2006 13:56:23 -0700
Could you be more specific? "a few other may be.." is vague, and it
would save time and mistakes to have it pinned down. Are the problems
all on the Intel side? Inbound and outbound? I saw some odd looking
ip lengths on my PPC/Mac.
The one big gotcha is that the stack swaps some fields in the ip
header. We missed this, so if you write an IP filter, the ip length
and a few other fields may be in host byte order instead of network
byte order. Some other functions, such as those that calculate
checksums, expect the data to be in network byte order. So...if you
run in to some weirdness, check the byte order.
-josh
On Aug 3, 2006, at 6:41 AM, Peter Lovell wrote:
I'm about to convert an application for Intel-based Macs and would like
comments and suggestions about "gotchas", if any, with the transition.
There are the standard Xcode and little-endian things, of course. No
surprise there.
But are there other differences I need to look at? I'm working at the
socket level, not down with hardware, so I suspect that above many of
the differences.
Although we don't have kernel sources, I'd expect that the PPC kernel
code is the same as that for Intel and I can use PPC for reference. Can
someone at Apple comment if it's "close enough" for NKEs.
THanks.....Peter
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