Re: creating default route in kernel

From: George V. Neville-Neil (gnn_at_neville-neil.com)
Date: 09/24/04

  • Next message: Waldemar Kornewald: "Re: locking & iovecs" 
    Date: Fri, 24 Sep 2004 11:29:25 +0900
To: Waldemar Kornewald <Waldemar.Kornewald@web.de>

    At Thu, 23 Sep 2004 12:12:20 +0200,
    Waldemar Kornewald wrote:
    >
    > Hi,
    > could you please tell me how I can create a default route from within
    > the kernel? I am a member of the Haiku (OS) networking team and
    > maintainer of the PPP stack and for dial-on-demand support there must be
    > a default route which does not work. BTW, we use a port of your netstack
    > (from the 4.x releases, I think).
    > Which values should the default route get (netmask, destination, etc.)
    > and which function(s) should I call (our PPP stack lives in the kernel)?

    If you look at src/sys/net/route.c you will find a function (in
    -CURRENT) called rtrequest1(). Read through that routine to see how
    to do an RTM_ADD.

    You will need a destination and netmask, yes. The destination for the
    default route is 0 and you need to set the gateway to the correct
    gateway.

    For debuggging this you should have something listening to a routing
    socket and printing out the messages. In userland on FreeBSD we do
    this with "route monitor", see the route(8) man page for more
    information.

    Later,
    George

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