[RFC 0/7] Introduce FreeBSD macros for SAFE iteration

[Stephen Hemminger]

On Mon, 27 Jan 2025 18:16:18 +0000
Bruce Richardson <bruce.richardson at intel.com> wrote:

> On Mon, Jan 27, 2025 at 10:03:54AM -0800, Stephen Hemminger wrote:
> > This series adds common macros for safe iteration over lists.
> > It is a subset copy of the macros from FreeBSD that are
> > missing from the Linux header sys/queue.h
> > 
> > Chose this over several other options:
> >   - let each driver define their own as needed.
> >     One Intel driver got it wrong, others will as well.
> >   - rename all the queue macros to RTE_XXX variants.
> >     Seems like useless renaming and confusion.
> >   - Several distros have libbsd package with the correct macros.
> >     But adding yet another dependency to DPDK would be annoying
> >     for something this basic.
> >   
> 
> Actually, I wouldn't be that quick to eliminate the last option. It may
> give us some additional options for simplification. For example, the
> strlcpy and strlcat functions are in libbsd too, and if we had that as
> mandatory dependency, perhaps we could remove some extra code there too?
> 
> /Bruce
> 

I would be ok with using libbsd but only if we didn't have to keep a parallel
copy for all the other compiler and OS variants. And would it be global or
a per-driver dependency?