Re: Please remove all bit fields in bpf uapi

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On Fri, Dec 18, 2020 at 04:52:15PM +0800, Meng Zhuo wrote:
> Hi, all
> 
> I'm tring to port bpf.h to Go, however it's very hard to make it right
> with cgo since bit fields some fields didn't match any type of Go.
> 
> i.e.
> struct bpf_prog_info {
>         /* .... */
>         __u32 gpl_compatible:1;             <-- boolean ?
>         __u32 :31; /* alignment pad */   <--- padding with 31 ?
> 
> UAPI(User application interface) not just for GCC only right? If it's
> true, I think remove all bit fields is more appropriate.

It's a bit late to change a user-visable api, sorry.  Go has to have
some way of properly handling bit fields, this isn't a new thing :)

good luck!

greg k-h



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