Author: yongari
Date: Sat Feb 19 03:01:24 2011
New Revision: 218833
URL: http://svn.freebsd.org/changeset/base/218833
Log:
Count how many frames driver lost in interrupt handler. This
register is cleared on read so make sure to clear it in driver
initialization phase.
Modified:
head/sys/dev/dc/if_dc.c
Modified: head/sys/dev/dc/if_dc.c
==============================================================================
--- head/sys/dev/dc/if_dc.c Sat Feb 19 02:47:10 2011 (r218832)
+++ head/sys/dev/dc/if_dc.c Sat Feb 19 03:01:24 2011 (r218833)
@@ -3250,7 +3250,7 @@ dc_intr(void *arg)
{
struct dc_softc *sc;
struct ifnet *ifp;
- u_int32_t status;
+ u_int32_t r, status;
int curpkts, n;
sc = arg;
@@ -3305,6 +3305,8 @@ dc_intr(void *arg)
if ((status & DC_ISR_RX_WATDOGTIMEO)
|| (status & DC_ISR_RX_NOBUF)) {
+ r = CSR_READ_4(sc, DC_FRAMESDISCARDED);
+ ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff);
curpkts = ifp->if_ipackets;
dc_rxeof(sc);
if (curpkts == ifp->if_ipackets) {
@@ -3723,6 +3725,9 @@ dc_init_locked(struct dc_softc *sc)
mii_mediachg(mii);
dc_setcfg(sc, sc->dc_if_media);
+ /* Clear missed frames and overflow counter. */
+ CSR_READ_4(sc, DC_FRAMESDISCARDED);
+
/* Don't start the ticker if this is a homePNA link. */
if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1)
sc->dc_link = 1;
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
