On Fri, 1 Dec 2017 12:06:05 -0700
Jason Gunthorpe <j...@mellanox.com> wrote:

> Such as:
> 
> In file included from ./include/trace/events/xdp.h:10:0,
>                  from ./include/linux/bpf_trace.h:6,
>                  from drivers/net/ethernet/intel/i40e/i40e_txrx.c:29:
> ./include/trace/events/xdp.h:94:17: warning: ‘struct bpf_map’ declared inside 
> parameter list
>     const struct bpf_map *map, u32 map_index),
>                  ^
> 
> By adding a forward declaration for struct bpf_map. In the
> CONFIG_BPF_SYSCALL case the declaration comes in via
> trace/events/bpf.h

This was already fixed:

 http://lkml.kernel.org/r/1512006089-180279-1-git-send-email-xiexi...@huawei.com

-- Steve

> 
> Fixes: 59a308967589 ("xdp: separate xdp_redirect tracepoint in map case")
> Signed-off-by: Jason Gunthorpe <j...@mellanox.com>
> ---
>  include/trace/events/xdp.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/trace/events/xdp.h b/include/trace/events/xdp.h
> index 4cd0f05d01134d..36b2a9043189be 100644
> --- a/include/trace/events/xdp.h
> +++ b/include/trace/events/xdp.h
> @@ -9,6 +9,8 @@
>  #include <linux/filter.h>
>  #include <linux/tracepoint.h>
>  
> +struct bpf_map;
> +
>  #define __XDP_ACT_MAP(FN)    \
>       FN(ABORTED)             \
>       FN(DROP)                \

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