linux-kernel - Re: [PATCH v2] hyperv: Add netpoll support

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Date:	Wed, 09 Jul 2014 18:13:17 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Richard Weinberger <richard@....at>, kys@...rosoft.com,
	haiyangz@...rosoft.com
CC:	romieu@...zoreil.com, devel@...uxdriverproject.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] hyperv: Add netpoll support

Hello.

On 07/09/2014 11:58 AM, Richard Weinberger wrote:

> In order to have at least a netconsole to debug kernel issues on
> Windows Azure this patch implements netpoll support.
> Sending packets is easy, netvsc_start_xmit() does already everything
> needed.

> Signed-off-by: Richard Weinberger <richard@....at>
> ---
>   drivers/net/hyperv/netvsc_drv.c | 11 +++++++++++
>   1 file changed, 11 insertions(+)

> diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
> index 4fd71b7..45218d5 100644
> --- a/drivers/net/hyperv/netvsc_drv.c
> +++ b/drivers/net/hyperv/netvsc_drv.c
> @@ -736,6 +736,14 @@ static int netvsc_set_mac_addr(struct net_device *ndev, void *p)
>   	return err;
>   }
>
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> +static void netvsc_poll_controller(struct net_device *net)
> +{
> +	/* As netvsc_start_xmit() works synchronous we don't have to
> +	   trigger anything here. */

    The multi-line comment style in the networking code is this:

/* bla
  * bla
  */

> +	return;

    Not needed.

> +}
> +#endif
[...]

WBR, Sergei

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