netdev - Re: [PATCH net-next v3] rtnetlink: delay RTM_DELLINK notification until after ndo

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Date:	Tue, 02 Dec 2014 23:39:17 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Mahesh Bandewar <maheshb@...gle.com>
Cc:	netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Roopa Prabhu <roopa@...ulusnetworks.com>,
	Toshiaki Makita <makita.toshiaki@....ntt.co.jp>
Subject: Re: [PATCH net-next v3] rtnetlink: delay RTM_DELLINK notification
 until after ndo_uninit()

On Tue, 2014-12-02 at 23:24 -0800, Mahesh Bandewar wrote:

> +EXPORT_SYMBOL(rtmsg_ifinfo_build_skb);
> +
> +void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags)
> +{
> +	struct net *net = dev_net(dev);
> +
> +	rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags);
> +}
> +EXPORT_SYMBOL(rtmsg_ifinfo_send);
> +
> +void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change,
> +		  gfp_t flags)
> +{
> +	struct sk_buff *skb;
> +
> +	skb = rtmsg_ifinfo_build_skb(type, dev, change, flags);
> +	if (skb)
> +		rtmsg_ifinfo_send(skb, dev, flags);
>  }
>  EXPORT_SYMBOL(rtmsg_ifinfo);

One last point :

Only rtmsg_ifinfo() needs the EXPORT_SYMBOL(...)

rtmsg_ifinfo_build_skb() and rtmsg_ifinfo_send() are used from core networking stack,
not a module.



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