Re: ECN configuration not working

From: Andi Kleen (ak@suse.de)
Date: Sat Sep 09 2000 - 17:18:09 EDT

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    On Sat, Sep 09, 2000 at 08:22:41PM +0200, Linux Now wrote:
    >
    > I've tested the latest kernels -bitten by truncate too- and have found
    > that the ECN configuration does not work as expected.
    >
    > If you just unset it in .config and echo 0 > /proc/sys/net/ipv4/tcp_ecn,
    > it just acts as if it was enabled.
    >
    > If you include it in your .config and then echo 0 >/proc/sys/net/ipv4/tcp_ecn
    > it really disables it.
    >
    > So I guess that there is something wrong when in theory it is disabled.

    Try make clean and recompile and test again. You probably didn't run
    make depend after you applied the patch that included ECN, so the Makefile
    doesn't know that it has to recompile the tcp* files when the ECN setting
    changes.

    BTW in pre8 there is no tcp_ecn sysctl anymore when the CONFIG is disabled.

    -Andi
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