From: David Howells <dhowells@redhat.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: Getting a network interface list from within the kernel
Date: Fri, 13 Apr 2007 12:37:18 +0100 [thread overview]
Message-ID: <25286.1176464238@redhat.com> (raw)
In-Reply-To: <20070412.135951.38690236.davem@davemloft.net>
David Miller <davem@davemloft.net> wrote:
> Issue a RTM_GETLINK rtnetlink request, and parse the response.
Okay, I've managed to find code that does this. However, RTM_GETLINK does not
appear to return any IPv4 addressing information. It does, however, contain
the MTU details which is one of the three things I wanted.
I found that RTM_GETADDR will give me the IPv4 address and something from
which I can calculate the netmask.
I don't suppose there's a single op that will allow me to get all three in one
go?
Oh, and can I assume that the interface index numbers returned by RTM_GETLINK
match those returned by RTM_GETADDR? Even if an interface is removed between
issuing the two calls? Alternatively, do I need to compare interface names as
those are available between both?
David
prev parent reply other threads:[~2007-04-13 11:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-12 20:51 Getting a network interface list from within the kernel David Howells
2007-04-12 20:59 ` David Miller
2007-04-13 11:37 ` David Howells [this message]
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