netdev - Re: [PATCH net-next v1 13/19] virtio_net: xsk: tx: virtnet_free_old

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Message-ID: <1697508125.07194-1-xuanzhuo@linux.alibaba.com>
Date: Tue, 17 Oct 2023 10:02:05 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org,
 "David S. Miller" <davem@...emloft.net>,
 Eric  Dumazet <edumazet@...gle.com>,
 Paolo Abeni <pabeni@...hat.com>,
 "Michael S.  Tsirkin" <mst@...hat.com>,
 Jason Wang <jasowang@...hat.com>,
 Alexei  Starovoitov <ast@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>,
 virtualization@...ts.linux-foundation.org,
 bpf@...r.kernel.org
Subject: Re: [PATCH net-next v1 13/19] virtio_net: xsk: tx: virtnet_free_old_xmit() distinguishes xsk buffer

On Mon, 16 Oct 2023 16:44:34 -0700, Jakub Kicinski <kuba@...nel.org> wrote:
> On Mon, 16 Oct 2023 20:00:27 +0800 Xuan Zhuo wrote:
> > @@ -305,9 +311,15 @@ static inline void virtnet_free_old_xmit(struct virtnet_sq *sq, bool in_napi,
> >
> >  			stats->bytes += xdp_get_frame_len(frame);
> >  			xdp_return_frame(frame);
> > +		} else {
> > +			stats->bytes += virtnet_ptr_to_xsk(ptr);
> > +			++xsknum;
> >  		}
> >  		stats->packets++;
> >  	}
> > +
> > +	if (xsknum)
> > +		xsk_tx_completed(sq->xsk.pool, xsknum);
> >  }
>
> sparse complains:
>
> drivers/net/virtio/virtio_net.h:322:41: warning: incorrect type in argument 1 (different address spaces)
> drivers/net/virtio/virtio_net.h:322:41:    expected struct xsk_buff_pool *pool
> drivers/net/virtio/virtio_net.h:322:41:    got struct xsk_buff_pool
> [noderef] __rcu *pool
>
> please build test with W=1 C=1

OK. I will add C=1 to may script.

Thanks.

> --
> pw-bot: cr