diff options
| -rw-r--r-- | hw/net/e1000.c | 3 | ||||
| -rw-r--r-- | hw/net/ne2000.c | 21 |
2 files changed, 18 insertions, 6 deletions
diff --git a/hw/net/e1000.c b/hw/net/e1000.c index 5c6bcd0014..09c9e9d53b 100644 --- a/hw/net/e1000.c +++ b/hw/net/e1000.c @@ -740,7 +740,8 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp) memmove(tp->data, tp->header, tp->hdr_len); tp->size = tp->hdr_len; } - } while (split_size -= bytes); + split_size -= bytes; + } while (bytes && split_size); } else if (!tp->tse && tp->cptse) { // context descriptor TSE is not set, while data descriptor TSE is set DBGOUT(TXERR, "TCP segmentation error\n"); diff --git a/hw/net/ne2000.c b/hw/net/ne2000.c index 53c704ad41..010f9efccd 100644 --- a/hw/net/ne2000.c +++ b/hw/net/ne2000.c @@ -221,6 +221,9 @@ ssize_t ne2000_receive(NetClientState *nc, const uint8_t *buf, size_t size_) } index = s->curpag << 8; + if (index >= NE2000_PMEM_END) { + index = s->start; + } /* 4 bytes for header */ total_len = size + 4; /* address for next packet (4 bytes for CRC) */ @@ -244,7 +247,7 @@ ssize_t ne2000_receive(NetClientState *nc, const uint8_t *buf, size_t size_) if (index <= s->stop) avail = s->stop - index; else - avail = 0; + break; len = size; if (len > avail) len = avail; @@ -306,13 +309,19 @@ static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val) offset = addr | (page << 4); switch(offset) { case EN0_STARTPG: - s->start = val << 8; + if (val << 8 <= NE2000_PMEM_END) { + s->start = val << 8; + } break; case EN0_STOPPG: - s->stop = val << 8; + if (val << 8 <= NE2000_PMEM_END) { + s->stop = val << 8; + } break; case EN0_BOUNDARY: - s->boundary = val; + if (val << 8 < NE2000_PMEM_END) { + s->boundary = val; + } break; case EN0_IMR: s->imr = val; @@ -353,7 +362,9 @@ static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val) s->phys[offset - EN1_PHYS] = val; break; case EN1_CURPAG: - s->curpag = val; + if (val << 8 < NE2000_PMEM_END) { + s->curpag = val; + } break; case EN1_MULT ... EN1_MULT + 7: s->mult[offset - EN1_MULT] = val; |