linux-kernel - Re: [PATCH v5 2/8] tun: add tun_is_little

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Date:	Thu, 23 Apr 2015 20:57:56 +0200
From:	Thomas Huth <thuth@...hat.com>
To:	Greg Kurz <gkurz@...ux.vnet.ibm.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v5 2/8] tun: add tun_is_little_endian() helper

On Thu, 23 Apr 2015 17:26:30 +0200
Greg Kurz <gkurz@...ux.vnet.ibm.com> wrote:

> Signed-off-by: Greg Kurz <gkurz@...ux.vnet.ibm.com>
> ---
>  drivers/net/tun.c |    9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index 857dca4..3c3d6c0 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -206,14 +206,19 @@ struct tun_struct {
>  	u32 flow_count;
>  };
>  
> +static inline bool tun_is_little_endian(struct tun_struct *tun)
> +{
> +	return tun->flags & TUN_VNET_LE;
> +}
> +
>  static inline u16 tun16_to_cpu(struct tun_struct *tun, __virtio16 val)
>  {
> -	return __virtio16_to_cpu(tun->flags & TUN_VNET_LE, val);
> +	return __virtio16_to_cpu(tun_is_little_endian(tun), val);
>  }
>  
>  static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val)
>  {
> -	return __cpu_to_virtio16(tun->flags & TUN_VNET_LE, val);
> +	return __cpu_to_virtio16(tun_is_little_endian(tun), val);
>  }

Reviewed-by: Thomas Huth <thuth@...hat.com>

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