netdev - Re: RTM_NEWLINK not received by application when connecting multiple devices simultaneously

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Message-ID: <CAKfDRXjCr0aDSDT8zN8A7_iNX6KAJwrR3NxaB8GAgz5oEiCB3w@mail.gmail.com>
Date:	Thu, 19 Apr 2012 17:07:59 +0200
From:	Kristian Evensen <kristian.evensen@...il.com>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	Ben Greear <greearb@...delatech.com>, netdev@...r.kernel.org
Subject: Re: RTM_NEWLINK not received by application when connecting multiple
 devices simultaneously

Thank you very much for both your replies.

>>
>> Multiple netlink msgs can be received in each read of a netlink
>> socket.  Maybe you are only processing the first one?

Yes, my code does this. I also some debug output for the test
"nlmsg_flags & NLM_F_MULTI", but it never evaluates to true.

> I recommend using the libmnl library instead of the older
> libnetlink. The code is cleaner and it handles error cases better.
> In libmnl there is a callback interface for parsing
> netlink messages.

Thank you for the tip, I will try this as it will make my code much cleaner.

Btw, I hadnt paid attention the age of the package I used. However,
upgrading to the latest available in the Debian repository (20120319)
does not have an effect.

-Kristian
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