Date: Thu, 7 Dec 2006 14:02:25 +0300 From: Gleb Smirnoff <glebius@FreeBSD.org> To: Paolo Pisati <piso@FreeBSD.org> Cc: Perforce Change Reviews <perforce@FreeBSD.org> Subject: Re: PERFORCE change 111230 for review Message-ID: <20061207110225.GU32700@FreeBSD.org> In-Reply-To: <200612062319.kB6NJgsq031755@repoman.freebsd.org> References: <200612062319.kB6NJgsq031755@repoman.freebsd.org>
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On Wed, Dec 06, 2006 at 11:19:42PM +0000, Paolo Pisati wrote: P> http://perforce.freebsd.org/chv.cgi?CH=111230 P> P> Change 111230 by piso@piso_newluxor on 2006/12/06 23:19:06 P> P> To workaround a problem when an mbuf is bigger than MCLBYTES P> (and thus not handled by m_megapullup()), introduce & use P> m_jumbo16pullup() that uses 16k jumbo size cluster. P> P> This problem only showed up on traffic generated on a box with P> a nic tso enabled. Paolo, this isn't a fix. Another application will do write(,, 16k + 1) and m_jumbo16pullup() will fail again. Please backout it, it is a hack. We need to fix TSO in such way that real packets, that will be transmitted to wire, will be passed to pfil handlers. -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
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