Date: Tue, 09 Jul 2013 15:52:25 +0200 From: Andreas Longwitz <longwitz@incore.de> To: freebsd-net@freebsd.org Subject: sis(4) flow control Message-ID: <51DC1599.8040805@incore.de>
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Some of my soekris boxes run with sis interfaces. Because I need ethernet flow control on these boxes I use the following patch (against 8-Stable) for some years: --- if_sis.c.orig 2013-05-15 20:01:16.000000000 +0200 +++ if_sis.c 2013-06-24 15:58:05.000000000 +0200 @@ -1965,6 +1965,18 @@ } #endif + if (sc->sis_type == SIS_TYPE_83815 && sc->sis_srr >= NS_SRR_16A) { + if (ifp->if_flags & IFF_LINK0) { + /* + * Configure Ethernet flow control for outgoing frames. + * Enable reception of 802.3x multicast pause frames. + */ + SIS_SETBIT(sc, NS_PCR, NS_PCR_PAUSE ); + } else { + SIS_CLRBIT(sc, NS_PCR, NS_PCR_PAUSE ); + } + } + mii = device_get_softc(sc->sis_miibus); /* Set MAC address */ Other network drivers (eg. vr) have this functionality inside, it would be fine if sis learns flow control too. --- Andreas Longwitz
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