On Tue, Aug 16, 2016 at 12:21:24PM +0200, Carlos Falgueras García wrote:
> diff --git a/src/expr.c b/src/expr.c
> index e5c1dd3..7f32055 100644
> --- a/src/expr.c
> +++ b/src/expr.c
> @@ -203,6 +203,20 @@ const char *nftnl_expr_get_str(const struct nftnl_expr 
> *expr, uint16_t type)
>  }
>  EXPORT_SYMBOL_ALIAS(nftnl_expr_get_str, nft_rule_expr_get_str);
>  
> +bool nftnl_expr_cmp(const struct nftnl_expr *e1, const struct nftnl_expr *e2)
> +{
> +     if (e1->flags != e2->flags)
> +             return false;
> +
> +     if (strcmp(e1->ops->name, e2->ops->name))
> +             return false;
> +     if (e1->ops->cmp)
> +             return e1->ops->cmp(e1, e2);
> +     else
> +             return !memcmp(e1->data, e2->data, e1->ops->alloc_len);

We cannot do memcmp() anymore, we have to add cmp() for each
expression because of we have already discussed wrt. unset attributes.
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