netdev - Re: [PATCH 3/5] virtio_net: Add XDP support

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Date:   Fri, 18 Nov 2016 15:23:42 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     John Fastabend <john.fastabend@...il.com>
Cc:     tgraf@...g.ch, shm@...ulusnetworks.com,
        alexei.starovoitov@...il.com, daniel@...earbox.net,
        davem@...emloft.net, john.r.fastabend@...el.com,
        netdev@...r.kernel.org, bblanco@...mgrid.com, brouer@...hat.com
Subject: Re: [PATCH 3/5] virtio_net: Add XDP support

On Fri, 2016-11-18 at 11:00 -0800, John Fastabend wrote:
> From: Shrijeet Mukherjee <shrijeet@...il.com>


>  #include <linux/slab.h>
> @@ -81,6 +82,8 @@ struct receive_queue {
>  
>  	struct napi_struct napi;
>  
> +	struct bpf_prog *xdp_prog;

Please add proper sparse annotation, as in 

	struct bpf_prog __rcu *xdp_prog;

And run sparse ;)

CONFIG_SPARSE_RCU_POINTER=y

make C=2 drivers/net/virtio_net.o