netdev - Re: [net-next PATCH v2 2/2] bridge: netlink dump interface at par with brctl

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Date:	Tue, 24 Jun 2014 08:29:01 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	davem@...emloft.net, stephen@...workplumber.org,
	netdev@...r.kernel.org, vyasevic@...hat.com,
	sfeldma@...ulusnetworks.com, john.r.fastabend@...el.com,
	roopa@...ulusnetworks.com
Subject: Re: [net-next PATCH v2 2/2] bridge: netlink dump interface at par
 with brctl

On Tue, 2014-06-24 at 10:15 -0400, Jamal Hadi Salim wrote:
> From: Jamal Hadi Salim <jhs@...atatu.com>
> 

...

>  
>  static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
>  {
> -	int idx = 0;
> -	struct net *net = sock_net(skb->sk);
>  	struct net_device *dev;
> +	struct nlattr *tb[IFLA_MAX+1];
> +	struct net_device *bdev = NULL;
> +	struct net_device *br_dev = NULL;
> +	const struct net_device_ops *ops = NULL;
> +	const struct net_device_ops *cops = NULL;
> +	struct ifinfomsg *ifm = nlmsg_data(cb->nlh);
> +	struct net *net = sock_net(skb->sk);
> +	int brport_idx = 0;
> +	int br_idx = 0;
> +	int idx = 0;
> +
> +	if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
> +			ifla_policy) == 0) {
> +		if (tb[IFLA_MASTER])
> +			br_idx = nla_get_u32(tb[IFLA_MASTER]);
> +	}
> +	
> +	brport_idx = ifm->ifi_index;
> +
> +	if (br_idx) {
> +		br_dev = __dev_get_by_index(net, br_idx);
> +		if (!br_dev) {
> +			return -ENODEV;
> +		}
> +		ops = br_dev->netdev_ops;
> +		bdev = br_dev;
> +	}
>  
> -	rcu_read_lock();
>  	for_each_netdev_rcu(net, dev) {


for_each_netdev() 



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