On Mon, May 8, 2023 at 2:14 PM Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx> wrote:
>
> virtnet_build_xdp_buff_mrg() auto release xdp shinfo then the caller no
> need to careful the xdp shinfo.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Thanks
> ---
> drivers/net/virtio_net.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index b26e95c96141..2d1329c32751 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -1194,7 +1194,7 @@ static int virtnet_build_xdp_buff_mrg(struct net_device *dev,
> dev->name, *num_buf,
> virtio16_to_cpu(vi->vdev, hdr->num_buffers));
> dev->stats.rx_length_errors++;
> - return -EINVAL;
> + goto err;
> }
>
> stats->bytes += len;
> @@ -1213,7 +1213,7 @@ static int virtnet_build_xdp_buff_mrg(struct net_device *dev,
> pr_debug("%s: rx error: len %u exceeds truesize %lu\n",
> dev->name, len, (unsigned long)(truesize - room));
> dev->stats.rx_length_errors++;
> - return -EINVAL;
> + goto err;
> }
>
> frag = &shinfo->frags[shinfo->nr_frags++];
> @@ -1228,6 +1228,10 @@ static int virtnet_build_xdp_buff_mrg(struct net_device *dev,
>
> *xdp_frags_truesize = xdp_frags_truesz;
> return 0;
> +
> +err:
> + put_xdp_frags(xdp);
> + return -EINVAL;
> }
>
> static void *mergeable_xdp_get_buf(struct virtnet_info *vi,
> @@ -1357,7 +1361,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
> err = virtnet_build_xdp_buff_mrg(dev, vi, rq, &xdp, data, len, frame_sz,
> &num_buf, &xdp_frags_truesz, stats);
> if (unlikely(err))
> - goto err_xdp_frags;
> + goto err_xdp;
>
> act = virtnet_xdp_handler(xdp_prog, &xdp, dev, xdp_xmit, stats);
>
> --
> 2.32.0.3.g01195cf9f
>
