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freebsd_amp_hwpstate
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Make sure that if_timer does not get reset if there are packets 

still queued for transmission. This should solve the problem of
the device stalling on transmissions if some link event prevents
transmission.

There are other drivers which have the same problem and need to be
fixed in the same way.

MFC after: 3 days
This commit is contained in:
Luigi Rizzo 2002-06-30 21:59:08 +00:00
parent 4f0fa8805b
commit 4dfae5a5e8
2 changed files with 11 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
sys/pci/if_sis.c
View File

@ -1393,31 +1393,24 @@ void sis_rxeoc(sc)
static void sis_txeof(sc)
struct sis_softc *sc;
{
struct sis_desc *cur_tx = NULL;
struct ifnet *ifp;
u_int32_t idx;
ifp = &sc->arpcom.ac_if;
/* Clear the timeout timer. */
ifp->if_timer = 0;
/*
* Go through our tx list and free mbufs for those
* frames that have been transmitted.
*/
idx = sc->sis_cdata.sis_tx_cons;
while (idx != sc->sis_cdata.sis_tx_prod) {
cur_tx = &sc->sis_ldata.sis_tx_list[idx];
for (idx = sc->sis_cdata.sis_tx_cons; sc->sis_cdata.sis_tx_cnt > 0;
sc->sis_cdata.sis_tx_cnt--, SIS_INC(idx, SIS_TX_LIST_CNT) ) {
struct sis_desc *cur_tx = &sc->sis_ldata.sis_tx_list[idx];
if (SIS_OWNDESC(cur_tx))
break;
if (cur_tx->sis_ctl & SIS_CMDSTS_MORE) {
sc->sis_cdata.sis_tx_cnt--;
SIS_INC(idx, SIS_TX_LIST_CNT);
if (cur_tx->sis_ctl & SIS_CMDSTS_MORE)
continue;
}
if (!(cur_tx->sis_ctl & SIS_CMDSTS_PKT_OK)) {
ifp->if_oerrors++;
@ -1437,16 +1430,15 @@ static void sis_txeof(sc)
bus_dmamap_unload(sc->sis_tag, cur_tx->sis_map);
bus_dmamap_destroy(sc->sis_tag, cur_tx->sis_map);
}
sc->sis_cdata.sis_tx_cnt--;
SIS_INC(idx, SIS_TX_LIST_CNT);
ifp->if_timer = 0;
}
sc->sis_cdata.sis_tx_cons = idx;
if (cur_tx != NULL)
if (idx != sc->sis_cdata.sis_tx_cons) {
/* we freed up some buffers */
sc->sis_cdata.sis_tx_cons = idx;
ifp->if_flags &= ~IFF_OACTIVE;
}
ifp->if_timer = (sc->sis_cdata.sis_tx_cnt == 0) ? 0 : 5;
return;
}

2
sys/pci/if_sisreg.h
View File

@ -309,7 +309,7 @@ struct sis_desc {
#define SIS_LASTDESC(x) (!((x)->sis_ctl & SIS_CMDSTS_MORE)))
#define SIS_OWNDESC(x) ((x)->sis_ctl & SIS_CMDSTS_OWN)
#define SIS_INC(x, y) { if (++(x) == y) x = 0; }
#define SIS_INC(x, y) (x) = ((x) == ((y)-1)) ? 0 : (x)+1
#define SIS_RXBYTES(x) (((x)->sis_ctl & SIS_CMDSTS_BUFLEN) - ETHER_CRC_LEN)
#define SIS_RXSTAT_COLL 0x00010000