Subject: Re: [PATCH net-next] xsk: make struct xsk_cb_desc available outside CONFIG_XDP_SOCKETS

From: Maciej Fijalkowski <[email-masked]>
Date: Tue, 19 Dec 2023 17:47:44 +0100

On Tue, Dec 19, 2023 at 01:02:05PM +0200, Vladimir Oltean wrote:
> The ice driver fails to build when CONFIG_XDP_SOCKETS is disabled.
> 
> drivers/net/ethernet/intel/ice/ice_base.c:533:21: error:
> variable has incomplete type 'struct xsk_cb_desc'
>         struct xsk_cb_desc desc = {};
>                            ^
> include/net/xsk_buff_pool.h:15:8: note:
> forward declaration of 'struct xsk_cb_desc'
> struct xsk_cb_desc;
>        ^
> 
> Fixes: d68d707dcbbf ("ice: Support XDP hints in AF_XDP ZC mode")
> Closes: https://lore.kernel.org/netdev/[email-masked]/
> Signed-off-by: Vladimir Oltean <[email-masked]>

Reviewed-by: Maciej Fijalkowski <[email-masked]>

Thanks Vladimir for acting upon this. Later on let us think about moving
this definition to xdp_sock.h maybe.

> ---
> Posting to net-next since this tree is broken at this stage, not only
> bpf-next.
> 
>  include/net/xdp_sock_drv.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/net/xdp_sock_drv.h b/include/net/xdp_sock_drv.h
> index b62bb8525a5f..526c1e7f505e 100644
> --- a/include/net/xdp_sock_drv.h
> +++ b/include/net/xdp_sock_drv.h
> @@ -12,14 +12,14 @@
>  #define XDP_UMEM_MIN_CHUNK_SHIFT 11
>  #define XDP_UMEM_MIN_CHUNK_SIZE (1 << XDP_UMEM_MIN_CHUNK_SHIFT)
>  
> -#ifdef CONFIG_XDP_SOCKETS
> -
>  struct xsk_cb_desc {
>  	void *src;
>  	u8 off;
>  	u8 bytes;
>  };
>  
> +#ifdef CONFIG_XDP_SOCKETS
> +
>  void xsk_tx_completed(struct xsk_buff_pool *pool, u32 nb_entries);
>  bool xsk_tx_peek_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc);
>  u32 xsk_tx_peek_release_desc_batch(struct xsk_buff_pool *pool, u32 max);
> -- 
> 2.34.1
>