On Mon, Aug 25, 2008 at 09:02:07PM +0200, John Hay wrote: > On Fri, Aug 22, 2008 at 03:03:30PM -0700, [EMAIL PROTECTED] wrote: > > At Fri, 22 Aug 2008 22:43:39 +0100, > > Bruce M. Simpson wrote: > > > > > > [EMAIL PROTECTED] wrote: > > > > Somehow the data that the device needs to do the proper checksum > > > > offload is getting trashed here. Now, since it's clear we need a > > > > writable packet structure so that we don't trash the original, I'm > > > > wondering if the m_pullup() will be sufficient. > > > > > > > > > > If it's serious enough to break UDP checksumming on the wire, perhaps we > > > should just swallow the mbuf allocator heap churn and do the m_dup() for > > > now, but slap in a big comment about why it's there. > > > > I think if none of us finds a better way before early next week that's > > what I'll do so that this at least works in 7.1. > > I think we and others have been hitting this problem: > > kern/119635: [em] Bad UDP packet checksum with em(4) and rxcsum/txcsum enabled > http://www.freebsd.org/cgi/query-pr.cgi?pr=119635 > > I'll try out your patch.
I have tried it and it does fix my problem. RIP2 over multicast works again. :-) John -- John Hay -- [EMAIL PROTECTED] / [EMAIL PROTECTED] _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
