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Code Issues Releases Activity

Set flag to stop backoff counter from counting when carrier activity is

Browse Source 
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 1995-11-17 12:11:22 +00:00
parent 5204129576
commit 38428efc63
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=12341
2 changed files with 28 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
sys/dev/de/if_de.c
View File

@ -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) {

22
sys/pci/if_de.c
View File

@ -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) {