netdev - Re: [PATCH 1/2] Interface group: core (netlink) part

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Date:	Tue, 16 Oct 2007 10:34:37 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Laszlo Attila Toth <panther@...abit.hu>
CC:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org
Subject: Re: [PATCH 1/2] Interface group: core (netlink) part

Laszlo Attila Toth wrote:
> diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
> index 4756d58..18ff3c5 100644
> --- a/net/core/rtnetlink.c
> +++ b/net/core/rtnetlink.c
> @@ -646,6 +646,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
>  	if (dev->master)
>  		NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
>  
> +	if (dev->ifgroup)
> +		NLA_PUT_U32(skb, IFLA_IFGROUP, dev->ifgroup);
> +

You need to adjust if_nlmsg_size() to account for this.

>  	if (dev->qdisc_sleeping)
>  		NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc_sleeping->ops->id);
>  
> @@ -846,6 +849,11 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
>  		write_unlock_bh(&dev_base_lock);
>  	}
>  
> +	if (tb[IFLA_IFGROUP]) {
> +		dev->ifgroup = nla_get_u32(tb[IFLA_IFGROUP ]);
> +		rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
> +	}

Notifcations should be atomic, not one for every single change. I know
thats not the case currently, but it seems we're missing a notifcation
for some of the attributes anyway (like tx_queue_len, operstate,
linkmode), please consolidate all these and send a single notifcation.
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