netdev - Re: [PATCH net-next] net: Allow to specify ifindex when device is moved to another namespace

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Date:   Fri, 2 Apr 2021 01:17:46 -0700
From:   Andrei Vagin <avagin@...il.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Cc:     Christian Brauner <christian.brauner@...ntu.com>,
        Alexander Mikhalitsyn <alexander.mikhalitsyn@...tuozzo.com>
Subject: Re: [PATCH net-next] net: Allow to specify ifindex when device is
 moved to another namespace

On Fri, Apr 02, 2021 at 12:36:22AM -0700, Andrei Vagin wrote:
> diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
> index 1bdcb33fb561..9508d3a0a28f 100644
> --- a/net/core/rtnetlink.c
> +++ b/net/core/rtnetlink.c
> @@ -2603,14 +2603,20 @@ static int do_setlink(const struct sk_buff *skb,
>  		return err;
>  
>  	if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_TARGET_NETNSID]) {
> -		struct net *net = rtnl_link_get_net_capable(skb, dev_net(dev),
> -							    tb, CAP_NET_ADMIN);
> +		int new_ifindex = -1;

pls ignore this patch. new_ifindex has to be initialized to 0 here. I
found this when I tested this patch but forgot to commit a fix.

Thanks,
Andrei