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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>
This commit is contained in:
David Greenman
parent
5204129576
commit
38428efc63
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=12341
@ -21,7 +21,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: if_de.c,v 1.35 1995/10/26 07:40:11 davidg Exp $
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* $Id: if_de.c,v 1.36 1995/11/14 10:03:56 phk Exp $
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*
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*/
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@ -414,7 +414,8 @@ static void
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tulip_dc21040_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160;
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_sia_connectivity, TULIP_SIACONN_RESET);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
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@ -452,7 +453,8 @@ static void
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tulip_zx314_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160;
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_sia_connectivity, TULIP_SIACONN_RESET);
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if (sc->tulip_flags & TULIP_ALTPHYS)
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printf("%s%d: enabling 10baseT/UTP port\n",
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@ -496,7 +498,8 @@ static void
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tulip_dc21140_evalboard_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EB_PINS);
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EB_INIT);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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@ -545,7 +548,8 @@ static void
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tulip_dc21140_cogent_em100_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EM100_PINS);
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EM100_INIT);
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if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
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@ -586,7 +590,8 @@ static void
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tulip_dc21140_znyx_zx34x_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_ZX34X_PINS);
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_ZX34X_INIT);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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@ -643,7 +648,8 @@ static void
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tulip_dc21140_de500_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_DE500_PINS);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
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@ -687,7 +693,7 @@ tulip_dc21041_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_ENHCAPTEFFCT
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/* |TULIP_CMD_FULLDUPLEX */ |TULIP_CMD_THRSHLD160;
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/* |TULIP_CMD_FULLDUPLEX */ |TULIP_CMD_THRSHLD160|TULIP_CMD_BACKOFFCTR;
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sc->tulip_intrmask |= TULIP_STS_NORMALINTR|TULIP_STS_GPTIMEOUT
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|TULIP_STS_ABNRMLINTR|TULIP_STS_LINKPASS|TULIP_STS_LINKFAIL;
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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@ -21,7 +21,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: if_de.c,v 1.35 1995/10/26 07:40:11 davidg Exp $
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* $Id: if_de.c,v 1.36 1995/11/14 10:03:56 phk Exp $
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*
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*/
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@ -414,7 +414,8 @@ static void
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tulip_dc21040_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160;
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_sia_connectivity, TULIP_SIACONN_RESET);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
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@ -452,7 +453,8 @@ static void
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tulip_zx314_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160;
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_THRSHLD160
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_sia_connectivity, TULIP_SIACONN_RESET);
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if (sc->tulip_flags & TULIP_ALTPHYS)
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printf("%s%d: enabling 10baseT/UTP port\n",
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@ -496,7 +498,8 @@ static void
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tulip_dc21140_evalboard_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EB_PINS);
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EB_INIT);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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@ -545,7 +548,8 @@ static void
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tulip_dc21140_cogent_em100_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EM100_PINS);
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_EM100_INIT);
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if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
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@ -586,7 +590,8 @@ static void
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tulip_dc21140_znyx_zx34x_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_ZX34X_PINS);
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_ZX34X_INIT);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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@ -643,7 +648,8 @@ static void
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tulip_dc21140_de500_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE;
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sc->tulip_cmdmode |= TULIP_CMD_STOREFWD|TULIP_CMD_MUSTBEONE
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|TULIP_CMD_BACKOFFCTR;
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TULIP_WRITE_CSR(sc, csr_gp, TULIP_GP_DE500_PINS);
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
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@ -687,7 +693,7 @@ tulip_dc21041_media_select(
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tulip_softc_t * const sc)
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{
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sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT|TULIP_CMD_ENHCAPTEFFCT
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/* |TULIP_CMD_FULLDUPLEX */ |TULIP_CMD_THRSHLD160;
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/* |TULIP_CMD_FULLDUPLEX */ |TULIP_CMD_THRSHLD160|TULIP_CMD_BACKOFFCTR;
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sc->tulip_intrmask |= TULIP_STS_NORMALINTR|TULIP_STS_GPTIMEOUT
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|TULIP_STS_ABNRMLINTR|TULIP_STS_LINKPASS|TULIP_STS_LINKFAIL;
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if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
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