static void
am7990_rint(struct lance_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct lermd rmd;
int bix, rp;
#if defined(LANCE_REVC_BUG)
struct ether_header *eh;
/* Make sure this is short-aligned, for ether_cmp(). */
static uint16_t bcast_enaddr[3] = { ~0, ~0, ~0 };
#endif
bix = sc->sc_last_rd;
/* Process all buffers with valid data. */
for (;;) {
rp = LE_RMDADDR(sc, bix);
(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
if (rmd.rmd1_bits & LE_R1_OWN)
break;
m = NULL;
if ((rmd.rmd1_bits & (LE_R1_ERR | LE_R1_STP | LE_R1_ENP)) !=
(LE_R1_STP | LE_R1_ENP)) {
if (rmd.rmd1_bits & LE_R1_ERR) {
#ifdef LEDEBUG
if (rmd.rmd1_bits & LE_R1_ENP) {
if ((rmd.rmd1_bits & LE_R1_OFLO) == 0) {
if (rmd.rmd1_bits & LE_R1_FRAM)
if_printf(ifp,
"framing error\n");
if (rmd.rmd1_bits & LE_R1_CRC)
if_printf(ifp,
"crc mismatch\n");
}
} else
if (rmd.rmd1_bits & LE_R1_OFLO)
if_printf(ifp, "overflow\n");
#endif
if (rmd.rmd1_bits & LE_R1_BUFF)
if_printf(ifp,
"receive buffer error\n");
} else if ((rmd.rmd1_bits & (LE_R1_STP | LE_R1_ENP)) !=
(LE_R1_STP | LE_R1_ENP))
if_printf(ifp, "dropping chained buffer\n");
} else {
#ifdef LEDEBUG
if (sc->sc_flags & LE_DEBUG)
am7990_recv_print(sc, bix);
#endif
/* Pull the packet off the interface. */
m = lance_get(sc, LE_RBUFADDR(sc, bix),
(int)rmd.rmd3 - ETHER_CRC_LEN);
}
rmd.rmd1_bits = LE_R1_OWN;
rmd.rmd2 = -LEBLEN | LE_XMD2_ONES;
rmd.rmd3 = 0;
(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
if (++bix == sc->sc_nrbuf)
bix = 0;
if (m != NULL) {
ifp->if_ipackets++;
#ifdef LANCE_REVC_BUG
/*
* The old LANCE (Rev. C) chips have a bug which
* causes garbage to be inserted in front of the
* received packet. The workaround is to ignore
* packets with an invalid destination address
* (garbage will usually not match).
* Of course, this precludes multicast support...
*/
eh = mtod(m, struct ether_header *);
if (ether_cmp(eh->ether_dhost, sc->sc_enaddr) &&
ether_cmp(eh->ether_dhost, bcast_enaddr)) {
m_freem(m);
continue;
}
#endif
/* Pass the packet up. */
LE_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
LE_LOCK(sc);
} else
static inline void
am79900_rint(struct lance_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct lermd rmd;
uint32_t rmd1;
int bix, rp;
#if defined(__i386__) && !defined(PC98)
struct ether_header *eh;
#endif
bix = sc->sc_last_rd;
/* Process all buffers with valid data. */
for (;;) {
rp = LE_RMDADDR(sc, bix);
(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
rmd1 = LE_LE32TOH(rmd.rmd1);
if (rmd1 & LE_R1_OWN)
break;
m = NULL;
if ((rmd1 & (LE_R1_ERR | LE_R1_STP | LE_R1_ENP)) !=
(LE_R1_STP | LE_R1_ENP)){
if (rmd1 & LE_R1_ERR) {
#ifdef LEDEBUG
if (rmd1 & LE_R1_ENP) {
if ((rmd1 & LE_R1_OFLO) == 0) {
if (rmd1 & LE_R1_FRAM)
if_printf(ifp,
"framing error\n");
if (rmd1 & LE_R1_CRC)
if_printf(ifp,
"crc mismatch\n");
}
} else
if (rmd1 & LE_R1_OFLO)
if_printf(ifp, "overflow\n");
#endif
if (rmd1 & LE_R1_BUFF)
if_printf(ifp,
"receive buffer error\n");
} else if ((rmd1 & (LE_R1_STP | LE_R1_ENP)) !=
(LE_R1_STP | LE_R1_ENP))
if_printf(ifp, "dropping chained buffer\n");
} else {
#ifdef LEDEBUG
if (sc->sc_flags & LE_DEBUG)
am79900_recv_print(sc, bix);
#endif
/* Pull the packet off the interface. */
m = lance_get(sc, LE_RBUFADDR(sc, bix),
(LE_LE32TOH(rmd.rmd2) & 0xfff) - ETHER_CRC_LEN);
}
rmd.rmd1 = LE_HTOLE32(LE_R1_OWN | LE_R1_ONES |
(-LEBLEN & 0xfff));
rmd.rmd2 = 0;
rmd.rmd3 = 0;
(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
if (++bix == sc->sc_nrbuf)
bix = 0;
if (m != NULL) {
ifp->if_ipackets++;
#if defined(__i386__) && !defined(PC98)
/*
* The VMware LANCE does not present IFF_SIMPLEX
* behavior on multicast packets. Thus drop the
* packet if it is from ourselves.
*/
eh = mtod(m, struct ether_header *);
if (!ether_cmp(eh->ether_shost, sc->sc_enaddr)) {
m_freem(m);
continue;
}
#endif
/* Pass the packet up. */
LE_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
LE_LOCK(sc);
} else
