Re(2): NKEs on Intel-based Macs
Re(2): NKEs on Intel-based Macs
- Subject: Re(2): NKEs on Intel-based Macs
- From: "Peter Lovell" <email@hidden>
- Date: Thu, 3 Aug 2006 15:18:25 -0400
Hi Josh,
thanks for the info, and the confirmation about sources.
Regards.....Peter
>
>The KPIs are the same. The kernel sources are similar.
>
>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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