diff options
Diffstat (limited to 'hw/net/e1000.c')
| -rw-r--r-- | hw/net/e1000.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/hw/net/e1000.c b/hw/net/e1000.c index 767490cef5..57a61f6e35 100644 --- a/hw/net/e1000.c +++ b/hw/net/e1000.c @@ -580,6 +580,14 @@ putsum(uint8_t *data, uint32_t n, uint32_t sloc, uint32_t css, uint32_t cse) } } +static inline void +inc_reg_if_not_full(E1000State *s, int index) +{ + if (s->mac_reg[index] != 0xffffffff) { + s->mac_reg[index]++; + } +} + static inline int vlan_enabled(E1000State *s) { @@ -677,8 +685,8 @@ xmit_seg(E1000State *s) e1000_send_packet(s, tp->data, tp->size); } - s->mac_reg[TPT]++; - s->mac_reg[GPTC]++; + inc_reg_if_not_full(s, TPT); + s->mac_reg[GPTC] = s->mac_reg[TPT]; n = s->mac_reg[TOTL]; if ((s->mac_reg[TOTL] += s->tx.size) < n) s->mac_reg[TOTH]++; @@ -1091,8 +1099,8 @@ e1000_receive_iov(NetClientState *nc, const struct iovec *iov, int iovcnt) } } while (desc_offset < total_size); - s->mac_reg[GPRC]++; - s->mac_reg[TPR]++; + inc_reg_if_not_full(s, TPR); + s->mac_reg[GPRC] = s->mac_reg[TPR]; /* TOR - Total Octets Received: * This register includes bytes received in a packet from the <Destination * Address> field through the <CRC> field, inclusively. |