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[Qemu-devel] [PATCH v4 4/7] e1000: Fixing the received/transmitted packe
From: |
Leonid Bloch |
Subject: |
[Qemu-devel] [PATCH v4 4/7] e1000: Fixing the received/transmitted packets' counters |
Date: |
Tue, 3 Nov 2015 13:14:12 +0200 |
According to Intel's specs, these counters (as the other Statistic
registers) stick at 0xffffffff when this maximal value is reached.
Previously, they would reset after the max. value.
Signed-off-by: Leonid Bloch <address@hidden>
Signed-off-by: Dmitry Fleytman <address@hidden>
---
hw/net/e1000.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index 7db6614..871f1b5 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -577,6 +577,14 @@ 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)
{
@@ -673,8 +681,8 @@ 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]++;
@@ -1087,8 +1095,8 @@ 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.
--
2.4.3
[Qemu-devel] [PATCH v4 6/7] e1000: Fixing the packet address filtering procedure, Leonid Bloch, 2015/11/03
[Qemu-devel] [PATCH v4 7/7] e1000: Implementing various counters, Leonid Bloch, 2015/11/03