netdev - Re: [PATCHv7 2/5] rtnetlink: send a single notification on device state changes

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Date:	Sat, 01 Dec 2007 00:24:41 +0100
From:	Jarek Poplawski <jarkao2@...pl>
To:	Laszlo Attila Toth <panther@...abit.hu>
CC:	David Miller <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org
Subject: Re: [PATCHv7 2/5] rtnetlink: send a single notification on device
 state changes

Laszlo Attila Toth wrote, On 11/29/2007 05:11 PM:

> In do_setlink() a single ntification is sent at the end of the function
> if any modification occured. If the address has been changed, another
> notification is sent.

...

> @@ -858,6 +859,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
>  	if (tb[IFLA_BROADCAST]) {
>  		nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
>  		send_addr_notify = 1;
> +		modified = 1;
>  	}

...

>  	if (send_addr_notify)
>  		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
> +
> +	if (modified)
> +		netdev_state_change(dev);
> +

The subject suggests there might be less notifications. The patch actually
adds a little. Any additional comment why they are necessary?

Jarek P.
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