Example #1
0
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
Example #2
0
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
Example #3
0
int
ether_get(struct iodesc *iodesc, void *pkt, size_t len, saseconds_t timeout)
{

	return lance_get(pkt, len) ? len : -1;
}