linux-kernel - Re: [PATCH v4 10/18] xen/pvcalls: implement listen command

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Date:   Tue, 20 Jun 2017 11:51:56 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xen.org
Cc:     linux-kernel@...r.kernel.org, jgross@...e.com,
        Stefano Stabellini <stefano@...reto.com>
Subject: Re: [PATCH v4 10/18] xen/pvcalls: implement listen command

On 06/15/2017 03:09 PM, Stefano Stabellini wrote:
> Call inet_listen to implement the listen command.
>
> Signed-off-by: Stefano Stabellini <stefano@...reto.com>
> CC: boris.ostrovsky@...cle.com
> CC: jgross@...e.com

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>

> ---
>  drivers/xen/pvcalls-back.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
>
> diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
> index c17d970..e5c535d 100644
> --- a/drivers/xen/pvcalls-back.c
> +++ b/drivers/xen/pvcalls-back.c
> @@ -358,6 +358,25 @@ static int pvcalls_back_bind(struct xenbus_device *dev,
>  static int pvcalls_back_listen(struct xenbus_device *dev,
>  			       struct xen_pvcalls_request *req)
>  {
> +	struct pvcalls_fedata *fedata;
> +	int ret = -EINVAL;
> +	struct sockpass_mapping *map;
> +	struct xen_pvcalls_response *rsp;
> +
> +	fedata = dev_get_drvdata(&dev->dev);
> +
> +	map = radix_tree_lookup(&fedata->socketpass_mappings, req->u.listen.id);
> +	if (map == NULL)
> +		goto out;
> +
> +	ret = inet_listen(map->sock, req->u.listen.backlog);
> +
> +out:
> +	rsp = RING_GET_RESPONSE(&fedata->ring, fedata->ring.rsp_prod_pvt++);
> +	rsp->req_id = req->req_id;
> +	rsp->cmd = req->cmd;
> +	rsp->u.listen.id = req->u.listen.id;
> +	rsp->ret = ret;
>  	return 0;

newline before return would be useful (if you respin this)

>  }
>