netdev - Re: [PATCH net-next v2] net: gro: Fix a 'directive in macro's argument list' sparse warning

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Date:   Thu, 17 Feb 2022 10:36:32 +0100
From:   Paolo Abeni <pabeni@...hat.com>
To:     Gal Pressman <gal@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Maxim Mikityanskiy <maximmi@...dia.com>,
        Alexander Lobakin <alexandr.lobakin@...el.com>
Subject: Re: [PATCH net-next v2] net: gro: Fix a 'directive in macro's
 argument list' sparse warning

On Thu, 2022-02-17 at 10:07 +0200, Gal Pressman wrote:
> Following the cited commit, sparse started complaining about:
> ../include/net/gro.h:58:1: warning: directive in macro's argument list
> ../include/net/gro.h:59:1: warning: directive in macro's argument list
> 
> Fix that by moving the defines out of the struct_group() macro.
> 
> Fixes: de5a1f3ce4c8 ("net: gro: minor optimization for dev_gro_receive()")
> Reviewed-by: Maxim Mikityanskiy <maximmi@...dia.com>
> Signed-off-by: Gal Pressman <gal@...dia.com>
> Acked-by: Alexander Lobakin <alexandr.lobakin@...el.com>
> ---
> Changelog -
> v1->v2: https://lore.kernel.org/netdev/20220216103100.9489-1-gal@nvidia.com/
> * Add a comment and fix alignment
> ---
>  include/net/gro.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/include/net/gro.h b/include/net/gro.h
> index a765fedda5c4..867656b0739c 100644
> --- a/include/net/gro.h
> +++ b/include/net/gro.h
> @@ -35,6 +35,9 @@ struct napi_gro_cb {
>  	/* jiffies when first packet was created/queued */
>  	unsigned long age;
>  
> +/* Used in napi_gro_cb::free */
> +#define NAPI_GRO_FREE             1
> +#define NAPI_GRO_FREE_STOLEN_HEAD 2
>  	/* portion of the cb set to zero at every gro iteration */
>  	struct_group(zeroed,
>  
> @@ -55,8 +58,6 @@ struct napi_gro_cb {
>  
>  		/* Free the skb? */
>  		u8	free:2;
> -#define NAPI_GRO_FREE		  1
> -#define NAPI_GRO_FREE_STOLEN_HEAD 2
>  
>  		/* Used in foo-over-udp, set in udp[46]_gro_receive */
>  		u8	is_ipv6:1;

LGTM, thanks!

Acked-by: Paolo Abeni <pabeni@...hat.com>