RE: [RFC 5/6] hash/thash: remove VLA warnings

[Konstantin Ananyev <konstantin.ananyev@huawei.com>]

> > @@ -771,7 +771,7 @@ rte_thash_adjust_tuple(struct rte_thash_ctx *ctx,
> >  	uint32_t desired_value,	unsigned int attempts,
> >  	rte_thash_check_tuple_t fn, void *userdata)
> >  {
> > -	uint32_t tmp_tuple[tuple_len / sizeof(uint32_t)];
> > +	uint32_t tmp_tuple[RTE_THASH_MAX_L4_LEN];
> 
> Keep the "/ sizeof(uint32_t)" here, rather than folding it into RTE_THASH_MAX_L4_LEN.
> 
> At your preference, keep RTE_THASH_MAX_L4_LEN (removing "in dwords" from it comment) or simply use:
> uint32_t tmp_tuple[sizeof(union rte_thash_tuple) / sizeof(uint32_t)];

Not sure I got you here...
You are not happy with word "dwords" or ...?
Yes, it is size in 4B elems...
Same as   other RTE_THASH_*_LEN macros in the same .h 
 
> 
> >  	unsigned int i, j, ret = 0;
> >  	uint32_t hash, adj_bits;
> >  	const uint8_t *hash_key;
> > diff --git a/lib/hash/rte_thash.h b/lib/hash/rte_thash.h
> > index 30b657e67a..322fe3af66 100644
> > --- a/lib/hash/rte_thash.h
> > +++ b/lib/hash/rte_thash.h
> > @@ -108,6 +108,14 @@ union rte_thash_tuple {
> >  	struct rte_ipv6_tuple	v6;
> >  };
> >
> > +/**
> > + * maximum length in dwords of input tuple to
> > + * calculate hash of ipv(4|6) header +
> > + * transport header
> > + */
> > +#define RTE_THASH_MAX_L4_LEN	\
> > +	((sizeof(union rte_thash_tuple)) / sizeof(uint32_t))
> > +
> >  /**
> >   * Prepare special converted key to use with rte_softrss_be()
> >   * @param orig
> > --
> > 2.35.3
> 
> With sizeof(uint32_t) back in tmp_tuple...
> Acked-by: Morten Brørup <mb@smartsharesystems.com>