linux-kernel - Re: [PATCH net-next] net/ncsi: Define {add,kill}_vid callbacks for !CONFIG_NET

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Message-ID: <6D0042A3-C029-4CAC-86B1-F570E541D8C0@gmail.com>
Date:   Wed, 30 Aug 2017 20:59:55 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Samuel Mendoza-Jonas <sam@...dozajonas.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>
CC:     Joel Stanley <joel@....id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Gavin Shan <gwshan@...ux.vnet.ibm.com>
Subject: Re: [PATCH net-next] net/ncsi: Define {add,kill}_vid callbacks for !CONFIG_NET_NCSI

On August 30, 2017 8:38:46 PM PDT, Samuel Mendoza-Jonas <sam@...dozajonas.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@...dozajonas.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))
> {


-- 
Florian