Re: what to replace splnet in FreeBSD 5.x?

From: Robert Watson (rwatson_at_FreeBSD.org)
Date: 07/23/05

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    Date: Sat, 23 Jul 2005 01:40:20 +0100 (BST)
To: Ed Maste <emaste@phaedrus.sandvine.ca>

    On Sat, 23 Jul 2005, Robert Watson wrote:

    > The attached patch introduces locking around the link layer and IPv4
    > multicast address lists, as well as updates drivers to use the locking.
    > It's a fairly large diff, but other than the changes to if.c, in.c, and
    > igmp.c, is fairly mechanical. It may well correct the problem you've
    > been seeing. If possible, and given sufficient review, I'd like to get
    > this change into 6.0, especially given that it affects the layout of
    > struct ifnet which is part of the ABI for network interface device
    > drivers.

    Updated version of the patch at:

         http://www.watson.org/~robert/freebsd/netperf/20050523-multicast.diff

    Spl-related cleanups (no longer useful documentation of old
    synchronization in many places), lock order hard-coded into WITNESS order
    rather than dynamically detected.

    Robert N M Watson
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