void
nfe_rxeof(struct nfe_softc *sc)
{
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
struct nfe_desc32 *desc32;
struct nfe_desc64 *desc64;
struct nfe_rx_data *data;
struct mbuf_list ml = MBUF_LIST_INITIALIZER();
struct mbuf *m, *mnew;
bus_addr_t physaddr;
#if NVLAN > 0
uint32_t vtag;
#endif
uint16_t flags;
int error, len;
for (;;) {
data = &sc->rxq.data[sc->rxq.cur];
if (sc->sc_flags & NFE_40BIT_ADDR) {
desc64 = &sc->rxq.desc64[sc->rxq.cur];
nfe_rxdesc64_sync(sc, desc64, BUS_DMASYNC_POSTREAD);
flags = letoh16(desc64->flags);
len = letoh16(desc64->length) & 0x3fff;
#if NVLAN > 0
vtag = letoh32(desc64->physaddr[1]);
#endif
} else {
desc32 = &sc->rxq.desc32[sc->rxq.cur];
nfe_rxdesc32_sync(sc, desc32, BUS_DMASYNC_POSTREAD);
flags = letoh16(desc32->flags);
len = letoh16(desc32->length) & 0x3fff;
}
if (flags & NFE_RX_READY)
break;
if ((sc->sc_flags & (NFE_JUMBO_SUP | NFE_40BIT_ADDR)) == 0) {
if (!(flags & NFE_RX_VALID_V1))
goto skip;
if ((flags & NFE_RX_FIXME_V1) == NFE_RX_FIXME_V1) {
flags &= ~NFE_RX_ERROR;
len--; /* fix buffer length */
}
} else {
if (!(flags & NFE_RX_VALID_V2))
goto skip;
if ((flags & NFE_RX_FIXME_V2) == NFE_RX_FIXME_V2) {
flags &= ~NFE_RX_ERROR;
len--; /* fix buffer length */
}
}
if (flags & NFE_RX_ERROR) {
ifp->if_ierrors++;
goto skip;
}
/*
* Try to allocate a new mbuf for this ring element and load
* it before processing the current mbuf. If the ring element
* cannot be loaded, drop the received packet and reuse the
* old mbuf. In the unlikely case that the old mbuf can't be
* reloaded either, explicitly panic.
*/
mnew = MCLGETI(NULL, MCLBYTES, NULL, M_DONTWAIT);
if (mnew == NULL) {
ifp->if_ierrors++;
goto skip;
}
mnew->m_pkthdr.len = mnew->m_len = MCLBYTES;
bus_dmamap_sync(sc->sc_dmat, data->map, 0,
data->map->dm_mapsize, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->sc_dmat, data->map);
error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, mnew,
BUS_DMA_READ | BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(mnew);
/* try to reload the old mbuf */
error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map,
m, BUS_DMA_READ | BUS_DMA_NOWAIT);
if (error != 0) {
/* very unlikely that it will fail.. */
panic("%s: could not load old rx mbuf",
sc->sc_dev.dv_xname);
}
ifp->if_ierrors++;
goto skip;
}
physaddr = data->map->dm_segs[0].ds_addr;
/*
* New mbuf successfully loaded, update Rx ring and continue
* processing.
*/
m = data->m;
data->m = mnew;
/* finalize mbuf */
m->m_pkthdr.len = m->m_len = len;
if ((sc->sc_flags & NFE_HW_CSUM) &&
(flags & NFE_RX_IP_CSUMOK)) {
m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK;
if (flags & NFE_RX_UDP_CSUMOK)
m->m_pkthdr.csum_flags |= M_UDP_CSUM_IN_OK;
if (flags & NFE_RX_TCP_CSUMOK)
m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
}
#if NVLAN > 0
if ((vtag & NFE_RX_VTAG) && (sc->sc_flags & NFE_HW_VLAN)) {
m->m_pkthdr.ether_vtag = vtag & 0xffff;
m->m_flags |= M_VLANTAG;
}
#endif
ml_enqueue(&ml, m);
/* update mapping address in h/w descriptor */
if (sc->sc_flags & NFE_40BIT_ADDR) {
#if defined(__LP64__)
desc64->physaddr[0] = htole32(physaddr >> 32);
#endif
desc64->physaddr[1] = htole32(physaddr & 0xffffffff);
} else {
void
nfe_rxeof(struct nfe_softc *sc)
{
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
struct nfe_desc32 *desc32;
struct nfe_desc64 *desc64;
struct nfe_rx_data *data;
struct nfe_jbuf *jbuf;
struct mbuf *m, *mnew;
bus_addr_t physaddr;
uint16_t flags;
int error, len;
for (;;) {
data = &sc->rxq.data[sc->rxq.cur];
if (sc->sc_flags & NFE_40BIT_ADDR) {
desc64 = &sc->rxq.desc64[sc->rxq.cur];
nfe_rxdesc64_sync(sc, desc64, BUS_DMASYNC_POSTREAD);
flags = letoh16(desc64->flags);
len = letoh16(desc64->length) & 0x3fff;
} else {
desc32 = &sc->rxq.desc32[sc->rxq.cur];
nfe_rxdesc32_sync(sc, desc32, BUS_DMASYNC_POSTREAD);
flags = letoh16(desc32->flags);
len = letoh16(desc32->length) & 0x3fff;
}
if (flags & NFE_RX_READY)
break;
if ((sc->sc_flags & (NFE_JUMBO_SUP | NFE_40BIT_ADDR)) == 0) {
if (!(flags & NFE_RX_VALID_V1))
goto skip;
if ((flags & NFE_RX_FIXME_V1) == NFE_RX_FIXME_V1) {
flags &= ~NFE_RX_ERROR;
len--; /* fix buffer length */
}
} else {
if (!(flags & NFE_RX_VALID_V2))
goto skip;
if ((flags & NFE_RX_FIXME_V2) == NFE_RX_FIXME_V2) {
flags &= ~NFE_RX_ERROR;
len--; /* fix buffer length */
}
}
if (flags & NFE_RX_ERROR) {
ifp->if_ierrors++;
goto skip;
}
/*
* Try to allocate a new mbuf for this ring element and load
* it before processing the current mbuf. If the ring element
* cannot be loaded, drop the received packet and reuse the
* old mbuf. In the unlikely case that the old mbuf can't be
* reloaded either, explicitly panic.
*/
MGETHDR(mnew, M_DONTWAIT, MT_DATA);
if (mnew == NULL) {
ifp->if_ierrors++;
goto skip;
}
if (sc->sc_flags & NFE_USE_JUMBO) {
if ((jbuf = nfe_jalloc(sc)) == NULL) {
m_freem(mnew);
ifp->if_ierrors++;
goto skip;
}
MEXTADD(mnew, jbuf->buf, NFE_JBYTES, 0, nfe_jfree, sc);
bus_dmamap_sync(sc->sc_dmat, sc->rxq.jmap,
mtod(data->m, caddr_t) - sc->rxq.jpool, NFE_JBYTES,
BUS_DMASYNC_POSTREAD);
physaddr = jbuf->physaddr;
} else {
MCLGET(mnew, M_DONTWAIT);
if (!(mnew->m_flags & M_EXT)) {
m_freem(mnew);
ifp->if_ierrors++;
goto skip;
}
bus_dmamap_sync(sc->sc_dmat, data->map, 0,
data->map->dm_mapsize, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->sc_dmat, data->map);
error = bus_dmamap_load(sc->sc_dmat, data->map,
mtod(mnew, void *), MCLBYTES, NULL,
BUS_DMA_READ | BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(mnew);
/* try to reload the old mbuf */
error = bus_dmamap_load(sc->sc_dmat, data->map,
mtod(data->m, void *), MCLBYTES, NULL,
BUS_DMA_READ | BUS_DMA_NOWAIT);
if (error != 0) {
/* very unlikely that it will fail.. */
panic("%s: could not load old rx mbuf",
sc->sc_dev.dv_xname);
}
ifp->if_ierrors++;
goto skip;
}
physaddr = data->map->dm_segs[0].ds_addr;
}
/*
* New mbuf successfully loaded, update Rx ring and continue
* processing.
*/
m = data->m;
data->m = mnew;
/* finalize mbuf */
m->m_pkthdr.len = m->m_len = len;
m->m_pkthdr.rcvif = ifp;
if ((sc->sc_flags & NFE_HW_CSUM) &&
(flags & NFE_RX_IP_CSUMOK)) {
m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK;
if (flags & NFE_RX_UDP_CSUMOK)
m->m_pkthdr.csum_flags |= M_UDP_CSUM_IN_OK;
if (flags & NFE_RX_TCP_CSUMOK)
m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
}
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN);
#endif
ifp->if_ipackets++;
ether_input_mbuf(ifp, m);
/* update mapping address in h/w descriptor */
if (sc->sc_flags & NFE_40BIT_ADDR) {
#if defined(__LP64__)
desc64->physaddr[0] = htole32(physaddr >> 32);
#endif
desc64->physaddr[1] = htole32(physaddr & 0xffffffff);
} else {
