netdev - Re: [PATCH net-next v2] vxlan: change vxlan_[config_]validate() to use netlink_ext

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Date:   Fri, 11 Aug 2017 18:24:00 +0200
From:   Matthias Schiffer <mschiffer@...verse-factory.net>
To:     Roopa Prabhu <roopa@...ulusnetworks.com>
Cc:     Girish Moodalbail <girish.moodalbail@...cle.com>,
        pravin shelar <pshelar@....org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Jiri Benc <jbenc@...hat.com>
Subject: Re: [PATCH net-next v2] vxlan: change vxlan_[config_]validate() to
 use netlink_ext_ack for error reporting

On 08/11/2017 06:19 PM, Roopa Prabhu wrote:
> On Thu, Aug 10, 2017 at 2:16 PM, Girish Moodalbail
> <girish.moodalbail@...cle.com> wrote:
>>
>>                 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
>> -                       pr_debug("invalid all zero ethernet address\n");
>> +                       NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_ADDRESS],
>> +                                           "Provided Ethernet address is not unicast");
>>                         return -EADDRNOTAVAIL;
> 
> 
> keep it simple and closer to the original msg: "invalid all zero
> ethernet address"

It is inaccurate though, is_valid_ether_addr will also reject multicast
addresses.

Matthias



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