On Tue, 18 Oct 2005, Arnaldo Carvalho de Melo wrote:
> Em Tue, Oct 18, 2005 at 03:23:18PM +0900, YOSHIFUJI Hideaki / ?$B5HF#1QL@ escreveu:
>> In article <[email protected]> (at Tue, 18 Oct 2005 16:09:27 +1000), Andrew Hendry <[email protected]> says:
>>
>>> +/*
>>> +* ITU DTE facilities
>>> +* Only the called and calling address
>>> +* extension are currently implemented.
>>> +* The rest are in place to avoid the struct
>>> +* changing size if someone needs them later
>>> ++ */
>>> +struct x25_dte_facilities {
>>> + unsigned int calling_len, called_len;
>>> + char calling_ae[20];
>>> + char called_ae[20];
>>> + unsigned char min_throughput;
>>> + unsigned short delay_cumul;
>>> + unsigned short delay_target;
>>> + unsigned short delay_max;
>>> + unsigned char expedited;
>>> +};
>>
>> Why don't you use fixed size members?
>> And we can eliminate 8bit hole.
>>
>> struct x25_dte_facilities {
>> u32 calling_len
>> u32 called_len;
>
> I guess the two above can be 'u8' as they refer to calling_ae and called_ae
> that at most will be '20'?
>
>> u8 calling_ae[20];
>> u8 called_ae[20];
>
> - Arnaldo
At the very least put the 32-bit in the beginning and 8-bit stuff at
the end so natural alignment occurs where possible.
Cheers,
Dick Johnson
Penguin : Linux version 2.6.13.4 on an i686 machine (5589.46 BogoMips).
Warning : 98.36% of all statistics are fiction.
.
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