Re: [PATCH] bitfield.h: add FIELD_MAX() and field_max()

[Jakub Kicinski]

On Sat, 29 Feb 2020 07:10:45 -0600 Alex Elder wrote:
> I should have actually checked my code before I sent this.  Yes
> I am using the macro as I described, to see if something fits.
> But I'm also using it this way:
> 
> 	foo = u32_get_bits(register, FOO_COUNT_FMASK);
> 	if (foo == field_max(FOO_COUNT_MASK))
> 		;	/* This has special meaning */
> 
> And another way:
> 
> 	size_limit = field_max(FOO_COUNT_MASK) * sizeof(struct foo);
> 
> So field_max() is really what I need here. 

Makes sense, in that case:

Acked-by: Jakub Kicinski <kuba@xxxxxxxxxx>