[net-next] net/ncsi: Define {add,kill}_vid callbacks for !CONFIG_NET_NCSI

Patch "net/ncsi: Configure VLAN tag filter" defined two new callback
functions in include/net/ncsi.h, but neglected the !CONFIG_NET_NCSI
case. This can cause a build error if these are referenced elsewhere
without NCSI enabled, for example in ftgmac100:

>>> ERROR: "ncsi_vlan_rx_kill_vid" [drivers/net/ethernet/faraday/ftgmac100.ko] undefined!
>>> ERROR: "ncsi_vlan_rx_add_vid" [drivers/net/ethernet/faraday/ftgmac100.ko] undefined!

Add definitions for !CONFIG_NET_NCSI to bring it into line with the rest
of ncsi.h

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
---
 include/net/ncsi.h | 8 ++++++++
 1 file changed, 8 insertions(+)

On August 30, 2017 8:38:46 PM PDT, Samuel Mendoza-Jonas <sam@mendozajonas.com> wrote:
>Patch "net/ncsi: Configure VLAN tag filter" defined two new callback
>functions in include/net/ncsi.h, but neglected the !CONFIG_NET_NCSI
>case. This can cause a build error if these are referenced elsewhere
>without NCSI enabled, for example in ftgmac100:
>
>>>> ERROR: "ncsi_vlan_rx_kill_vid"
>[drivers/net/ethernet/faraday/ftgmac100.ko] undefined!
>>>> ERROR: "ncsi_vlan_rx_add_vid"
>[drivers/net/ethernet/faraday/ftgmac100.ko] undefined!
>
>Add definitions for !CONFIG_NET_NCSI to bring it into line with the
>rest
>of ncsi.h
>
>Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
>---
> include/net/ncsi.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
>diff --git a/include/net/ncsi.h b/include/net/ncsi.h
>index 1f96af46df49..2b13b6b91a4d 100644
>--- a/include/net/ncsi.h
>+++ b/include/net/ncsi.h
>@@ -36,6 +36,14 @@ int ncsi_start_dev(struct ncsi_dev *nd);
> void ncsi_stop_dev(struct ncsi_dev *nd);
> void ncsi_unregister_dev(struct ncsi_dev *nd);
> #else /* !CONFIG_NET_NCSI */
>+int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16
>vid)
>+{
>+	return -ENOTTY;

Returning -EOPNOTSUPP would probably be more correct here.

>+}
>+int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16
>vid)
>+{
>+	return -ENOTTY;

Likewise.

>+}
>static inline struct ncsi_dev *ncsi_register_dev(struct net_device
>*dev,
> 					void (*notifier)(struct ncsi_dev *nd))
> {

On 31-Aug-2017 01:38 PM, Samuel Mendoza-Jonas wrote:
> Patch "net/ncsi: Configure VLAN tag filter" defined two new callback
> functions in include/net/ncsi.h, but neglected the !CONFIG_NET_NCSI
> case. This can cause a build error if these are referenced elsewhere
> without NCSI enabled, for example in ftgmac100:
> 
> >>> ERROR: "ncsi_vlan_rx_kill_vid" [drivers/net/ethernet/faraday/ftgmac100.ko] undefined!
> >>> ERROR: "ncsi_vlan_rx_add_vid" [drivers/net/ethernet/faraday/ftgmac100.ko] undefined!
> 
> Add definitions for !CONFIG_NET_NCSI to bring it into line with the rest
> of ncsi.h
> 
> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
> ---
>  include/net/ncsi.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/include/net/ncsi.h b/include/net/ncsi.h
> index 1f96af46df49..2b13b6b91a4d 100644
> --- a/include/net/ncsi.h
> +++ b/include/net/ncsi.h
> @@ -36,6 +36,14 @@ int ncsi_start_dev(struct ncsi_dev *nd);
>  void ncsi_stop_dev(struct ncsi_dev *nd);
>  void ncsi_unregister_dev(struct ncsi_dev *nd);
>  #else /* !CONFIG_NET_NCSI */
> +int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
> +{
> +	return -ENOTTY;
> +}
> +int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
> +{
> +	return -ENOTTY;
> +}

These should be static functions because they are defined in the header 
file or you will get multiple symbol definitions.

--Vernon

>  static inline struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
>  					void (*notifier)(struct ncsi_dev *nd))
>  {
> -- 
> 2.14.1
>

On Thu, 2017-08-31 at 08:24 -0700, Vernon Mauery wrote:
>  +int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
> > +{
> > +     return -ENOTTY;
> > +}
> > +int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
> > +{
> > +     return -ENOTTY;
> > +}
> 
> These should be static functions because they are defined in the header 
> file or you will get multiple symbol definitions.

static inline even or you'll get warning about them being unused iirc.

Cheers,
Ben.