diff options
| -rw-r--r-- | hw/net/e1000.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/hw/net/e1000.c b/hw/net/e1000.c index 57a61f6e35..9967b5dbf7 100644 --- a/hw/net/e1000.c +++ b/hw/net/e1000.c @@ -588,6 +588,20 @@ inc_reg_if_not_full(E1000State *s, int index) } } +static void +grow_8reg_if_not_full(E1000State *s, int index, int size) +{ + uint64_t sum = s->mac_reg[index] | (uint64_t)s->mac_reg[index+1] << 32; + + if (sum + size < sum) { + sum = ~0ULL; + } else { + sum += size; + } + s->mac_reg[index] = sum; + s->mac_reg[index+1] = sum >> 32; +} + static inline int vlan_enabled(E1000State *s) { @@ -637,7 +651,7 @@ static void xmit_seg(E1000State *s) { uint16_t len, *sp; - unsigned int frames = s->tx.tso_frames, css, sofar, n; + unsigned int frames = s->tx.tso_frames, css, sofar; struct e1000_tx *tp = &s->tx; if (tp->tse && tp->cptse) { @@ -686,10 +700,8 @@ xmit_seg(E1000State *s) } inc_reg_if_not_full(s, TPT); + grow_8reg_if_not_full(s, TOTL, s->tx.size); 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]++; } static void @@ -1104,11 +1116,9 @@ e1000_receive_iov(NetClientState *nc, const struct iovec *iov, int iovcnt) /* TOR - Total Octets Received: * This register includes bytes received in a packet from the <Destination * Address> field through the <CRC> field, inclusively. + * Always include FCS length (4) in size. */ - n = s->mac_reg[TORL] + size + /* Always include FCS length. */ 4; - if (n < s->mac_reg[TORL]) - s->mac_reg[TORH]++; - s->mac_reg[TORL] = n; + grow_8reg_if_not_full(s, TORL, size+4); n = E1000_ICS_RXT0; if ((rdt = s->mac_reg[RDT]) < s->mac_reg[RDH]) |