netdev - Re: [RFC PATCH net-next 3/3] net: dsa: never skip VLAN configuration

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Date:   Mon, 12 Sep 2022 15:42:45 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     "Arun.Ramadoss@...rochip.com" <Arun.Ramadoss@...rochip.com>
CC:     Claudiu Manoil <claudiu.manoil@....com>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
        "alexandre.belloni@...tlin.com" <alexandre.belloni@...tlin.com>,
        "vivien.didelot@...il.com" <vivien.didelot@...il.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "idosch@...dia.com" <idosch@...dia.com>,
        "linux@...pel-privat.de" <linux@...pel-privat.de>,
        "petrm@...dia.com" <petrm@...dia.com>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>,
        "hauke@...ke-m.de" <hauke@...ke-m.de>,
        "martin.blumenstingl@...glemail.com" 
        <martin.blumenstingl@...glemail.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Woojung.Huh@...rochip.com" <Woojung.Huh@...rochip.com>,
        "davem@...emloft.net" <davem@...emloft.net>
Subject: Re: [RFC PATCH net-next 3/3] net: dsa: never skip VLAN configuration

On Mon, Sep 12, 2022 at 03:30:18PM +0000, Arun.Ramadoss@...rochip.com wrote:
> On Tue, 2022-07-26 at 17:21 +0000, Vladimir Oltean wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you
> > know the content is safe
> Hi Vladimir,
> I am trying to bringup the kselftest for bridge_vlan_aware.sh, in that
> I am facing problem during the ping test and all the tests are failing.
> 
> #ip vrf exec vlan1 ping 192.0.2.2
> Cannot open network namespace: No such file or directory
> Failed to get name of network namespace: No such file or directory
> 
> Is there any configurations need to be enabled in the linux kernel, can
> you suggest/help me out in resolving it.
> 
> --
> Arun

Yes, quite a few, in fact.
Note that I'm not quite sure why it says "cannot open network namespace"
when the command accesses a VRF instead.

Try these:

CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_NET_L3_MASTER_DEV=y
CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_NET_VRF=y
CONFIG_BPF_SYSCALL=y
CONFIG_CGROUP_BPF=y