diff options
| author | dg <dg@FreeBSD.org> | 1995-11-17 12:11:22 +0000 |
|---|---|---|
| committer | dg <dg@FreeBSD.org> | 1995-11-17 12:11:22 +0000 |
| commit | 6a1863f80c26f13c80a8056bb239c86a35f53732 (patch) | |
| tree | 23e2e00e6c19aa8137122300311042c52647b9b8 /sys/dev/de | |
| parent | 7631637fd4b97f0b5042c959585b7e378eb294c4 (diff) | |
| download | FreeBSD-src-6a1863f80c26f13c80a8056bb239c86a35f53732.zip FreeBSD-src-6a1863f80c26f13c80a8056bb239c86a35f53732.tar.gz | |
Set flag to stop backoff counter from counting when carrier activity is
detected. This dramatically reduces the collision rate (about 1/10th of
what is was previously).
Submitted by: Matt Thomas <matt@lkg.dec.com>
Diffstat (limited to 'sys/dev/de')
| -rw-r--r-- | sys/dev/de/if_de.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/sys/dev/de/if_de.c b/sys/dev/de/if_de.c index 6846df7..cebf9c4 100644 --- a/sys/dev/de/if_de.c +++ b/sys/dev/de/if_de.c @@ -21,7 +21,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: if_de.c,v 1.35 1995/10/26 07:40:11 davidg Exp $ + * $Id: if_de.c,v 1.36 1995/11/14 10:03:56 phk Exp $ * */ @@ -414,7 +414,8 @@ static void tulip_dc21040_media_select( tulip_softc_t * const sc) { - sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160; + sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160 + |TULIP_CMD_BACKOFFCTR; TULIP_WRITE_CSR(sc, csr_sia_connectivity, TULIP_SIACONN_RESET); if (sc->tulip_if.if_flags & IFF_ALTPHYS) { if ((sc->tulip_flags & TULIP_ALTPHYS) == 0) @@ -452,7 +453,8 @@ static void tulip_zx314_media_select( tulip_softc_t * const sc) { - sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160; + sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160 + |TULIP_CMD_BACKOFFCTR; TULIP_WRITE_CSR(sc, csr_sia_connectivity, TULIP_SIACONN_RESET); if (sc->tulip_flags & TULIP_ALTPHYS) printf("%s%d: enabling 10baseT/UTP port\n", @@ -496,7 +498,8 @@ static void tulip_dc21140_evalboard_media_select( tulip_softc_t * const sc) { - sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE; + sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE + |TULIP_CMD_BACKOFFCTR; TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EB_PINS); TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EB_INIT); if (sc->tulip_if.if_flags & IFF_ALTPHYS) { @@ -545,7 +548,8 @@ static void tulip_dc21140_cogent_em100_media_select( tulip_softc_t * const sc) { - sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE; + sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE + |TULIP_CMD_BACKOFFCTR; TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EM100_PINS); TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EM100_INIT); if ((sc->tulip_flags & TULIP_ALTPHYS) == 0) @@ -586,7 +590,8 @@ static void tulip_dc21140_znyx_zx34x_media_select( tulip_softc_t * const sc) { - sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE; + sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE + |TULIP_CMD_BACKOFFCTR; TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_ZX34X_PINS); TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_ZX34X_INIT); if (sc->tulip_if.if_flags & IFF_ALTPHYS) { @@ -643,7 +648,8 @@ static void tulip_dc21140_de500_media_select( tulip_softc_t * const sc) { - sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE; + sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE + |TULIP_CMD_BACKOFFCTR; TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_DE500_PINS); if (sc->tulip_if.if_flags & IFF_ALTPHYS) { if ((sc->tulip_flags & TULIP_ALTPHYS) == 0) @@ -687,7 +693,7 @@ tulip_dc21041_media_select( tulip_softc_t * const sc) { sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_ENHCAPTEFFCT - /* |TULIP_CMD_FULLDUPLEX */ |TULIP_CMD_THRSHLD160; + /* |TULIP_CMD_FULLDUPLEX */ |TULIP_CMD_THRSHLD160|TULIP_CMD_BACKOFFCTR; sc->tulip_intrmask |= TULIP_STS_NORMALINTR|TULIP_STS_GPTIMEOUT |TULIP_STS_ABNRMLINTR|TULIP_STS_LINKPASS|TULIP_STS_LINKFAIL; if (sc->tulip_if.if_flags & IFF_ALTPHYS) { |
