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avoid illegal sleeps in the softint routine. 

XXX could probably do better by creating a watchdog thread.
This commit is contained in:
mrg 2012-12-09 03:30:00 +00:00
parent d60ecb6c95
commit 86d6509587
1 changed files with 19 additions and 11 deletions
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30
sys/dev/pci/if_alc.c
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@ -103,6 +103,7 @@ static void alc_attach(device_t, device_t, void *);
static int alc_detach(device_t, int);
static int alc_init(struct ifnet *);
static int alc_init_backend(struct ifnet *, bool);
static void alc_start(struct ifnet *);
static int alc_ioctl(struct ifnet *, u_long, void *);
static void alc_watchdog(struct ifnet *);
@ -119,7 +120,7 @@ static struct alc_ident *
static void alc_get_macaddr(struct alc_softc *);
static void alc_init_cmb(struct alc_softc *);
static void alc_init_rr_ring(struct alc_softc *);
static int alc_init_rx_ring(struct alc_softc *);
static int alc_init_rx_ring(struct alc_softc *, bool);
static void alc_init_smb(struct alc_softc *);
static void alc_init_tx_ring(struct alc_softc *);
static int alc_intr(void *);
@ -127,7 +128,7 @@ static void alc_mac_config(struct alc_softc *);
static int alc_miibus_readreg(device_t, int, int);
static void alc_miibus_statchg(struct ifnet *);
static void alc_miibus_writereg(device_t, int, int, int);
static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *, int);
static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *, bool);
static void alc_phy_down(struct alc_softc *);
static void alc_phy_reset(struct alc_softc *);
static void alc_reset(struct alc_softc *);
@ -1442,13 +1443,13 @@ alc_watchdog(struct ifnet *ifp)
printf("%s: watchdog timeout (missed link)\n",
device_xname(sc->sc_dev));
ifp->if_oerrors++;
alc_init(ifp);
alc_init_backend(ifp, false);
return;
}
printf("%s: watchdog timeout\n", device_xname(sc->sc_dev));
ifp->if_oerrors++;
alc_init(ifp);
alc_init_backend(ifp, false);
if (!IFQ_IS_EMPTY(&ifp->if_snd))
alc_start(ifp);
@ -1678,7 +1679,7 @@ alc_intr(void *arg)
error = alc_rxintr(sc);
if (error) {
alc_init(ifp);
alc_init_backend(ifp, false);
return (0);
}
}
@ -1694,7 +1695,7 @@ alc_intr(void *arg)
if (status & INTR_TXQ_TO_RST)
printf("%s: TxQ reset! -- resetting\n",
device_xname(sc->sc_dev));
alc_init(ifp);
alc_init_backend(ifp, false);
return (0);
}
@ -1765,7 +1766,7 @@ alc_txeof(struct alc_softc *sc)
}
static int
alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd, int init)
alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd, bool init)
{
struct mbuf *m;
bus_dmamap_t map;
@ -1920,7 +1921,7 @@ alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
mp = rxd->rx_m;
/* Add a new receive buffer to the ring. */
if (alc_newbuf(sc, rxd, 0) != 0) {
if (alc_newbuf(sc, rxd, false) != 0) {
ifp->if_iqdrops++;
/* Reuse Rx buffers. */
if (sc->alc_cdata.alc_rxhead != NULL)
@ -2043,6 +2044,13 @@ alc_reset(struct alc_softc *sc)
static int
alc_init(struct ifnet *ifp)
{
return alc_init_backend(ifp, true);
}
static int
alc_init_backend(struct ifnet *ifp, bool init)
{
struct alc_softc *sc = ifp->if_softc;
struct mii_data *mii;
@ -2061,7 +2069,7 @@ alc_init(struct ifnet *ifp)
alc_reset(sc);
/* Initialize Rx descriptors. */
error = alc_init_rx_ring(sc);
error = alc_init_rx_ring(sc, init);
if (error != 0) {
printf("%s: no memory for Rx buffers.\n", device_xname(sc->sc_dev));
alc_stop(ifp, 0);
@ -2514,7 +2522,7 @@ alc_init_tx_ring(struct alc_softc *sc)
}
static int
alc_init_rx_ring(struct alc_softc *sc)
alc_init_rx_ring(struct alc_softc *sc, bool init)
{
struct alc_ring_data *rd;
struct alc_rxdesc *rxd;
@ -2527,7 +2535,7 @@ alc_init_rx_ring(struct alc_softc *sc)
rxd = &sc->alc_cdata.alc_rxdesc[i];
rxd->rx_m = NULL;
rxd->rx_desc = &rd->alc_rx_ring[i];
if (alc_newbuf(sc, rxd, 1) != 0)
if (alc_newbuf(sc, rxd, init) != 0)
return (ENOBUFS);
}