netdev - Re: [PATCH net-next 1/2] vlan: add proto for proc interface

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Date:	Fri, 7 Mar 2014 13:15:22 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Ding Tianhong <dingtianhong@...wei.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] vlan: add proto for proc interface

On Fri, Mar 07, 2014 at 08:10:50PM +0800, Ding Tianhong wrote:
> The vlan could support 2 proto: 802.1q and 802.1ad, so add it to
> proc interface, the user could easily distinguish the proto for
> each vlan dev.
> 
> And the dev->priv_flags seems inappropriate, modify to Priv_Flags,
> looks more comfortable.

The proc interface is obsolete, but this doesn't mean you're allowed
to break it. This information is available through netlink. The proc
interface should not be touched.

Nacked-by: Patrick McHardy <kaber@...sh.net>

> 
> ---------------------- the old format: --------------------------
> 
> eth2.10  VID: 10         REORDER_HDR: 1  dev->priv_flags: 1
>          total frames received            5
>           total bytes received          336
>       Broadcast/Multicast Rcvd            0
> 
>       total frames transmitted           13
>        total bytes transmitted         1026
> Device: eth2
> INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
>  EGRESS priority mappings:
> 
> ----------------------- the new format: -------------------------
> 
> eth2.20  Proto: 802.1q  VID: 20  REORDER_HDR: 1  Priv_Flags: 1
>          total frames received            0
>           total bytes received            0
>       Broadcast/Multicast Rcvd            0
> 
>       total frames transmitted            0
>        total bytes transmitted            0
> Device: eth2
> INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
>  EGRESS priority mappings:
> 
> ----------------------------------------------------------------
> 
> Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
> ---
>  net/8021q/vlanproc.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
> index 1d0e8921..a40abbc 100644
> --- a/net/8021q/vlanproc.c
> +++ b/net/8021q/vlanproc.c
> @@ -285,8 +285,10 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
>  
>  	stats = dev_get_stats(vlandev, &temp);
>  	seq_printf(seq,
> -		   "%s  VID: %d	 REORDER_HDR: %i  dev->priv_flags: %hx\n",
> -		   vlandev->name, vlan->vlan_id,
> +		   "%s  Proto: %s  VID: %d  REORDER_HDR: %i  Priv_Flags: %hx\n",
> +		   vlandev->name,
> +		   vlan->vlan_proto == htons(ETH_P_8021Q) ? "802.1q" : "802.1ad",
> +		   vlan->vlan_id,
>  		   (int)(vlan->flags & 1), vlandev->priv_flags);
>  
>  	seq_printf(seq, fmt64, "total frames received", stats->rx_packets);
> -- 
> 1.8.0
> 
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