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e1000e: Fix tx/rx counters

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The bytes and packets counter registers are cleared on read.

Copying the "total counter" registers to the "good counter" registers has
side effects.
If the "total" register is never read by the OS, it only gets incremented.
This leads to exponential growth of the "good" register.

This commit increments the counters individually to avoid this.

Signed-off-by: Timothée Cocault <timothee.cocault@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
timothee.cocault@gmail.com 2023-04-10 17:27:48 +02:00 • committed by Jason Wang
parent 886c0453cb
commit 8d689f6aae
4 changed files with 8 additions and 12 deletions
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5
hw/net/e1000.c
View file

@ -637,9 +637,8 @@ xmit_seg(E1000State *s)
e1000x_inc_reg_if_not_full(s->mac_reg, TPT);
e1000x_grow_8reg_if_not_full(s->mac_reg, TOTL, s->tx.size + 4);
s->mac_reg[GPTC] = s->mac_reg[TPT];
s->mac_reg[GOTCL] = s->mac_reg[TOTL];
s->mac_reg[GOTCH] = s->mac_reg[TOTH];
e1000x_inc_reg_if_not_full(s->mac_reg, GPTC);
e1000x_grow_8reg_if_not_full(s->mac_reg, GOTCL, s->tx.size + 4);
}
static void

5
hw/net/e1000e_core.c
View file

@ -711,9 +711,8 @@ e1000e_on_tx_done_update_stats(E1000ECore *core, struct NetTxPkt *tx_pkt)
g_assert_not_reached();
}
core->mac[GPTC] = core->mac[TPT];
core->mac[GOTCL] = core->mac[TOTL];
core->mac[GOTCH] = core->mac[TOTH];
e1000x_inc_reg_if_not_full(core->mac, GPTC);
e1000x_grow_8reg_if_not_full(core->mac, GOTCL, tot_len);
}
static void

5
hw/net/e1000x_common.c
View file

@ -220,15 +220,14 @@ e1000x_update_rx_total_stats(uint32_t *mac,
e1000x_increase_size_stats(mac, PRCregs, data_fcs_size);
e1000x_inc_reg_if_not_full(mac, TPR);
mac[GPRC] = mac[TPR];
e1000x_inc_reg_if_not_full(mac, GPRC);
/* 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.
*/
e1000x_grow_8reg_if_not_full(mac, TORL, data_size + 4);
mac[GORCL] = mac[TORL];
mac[GORCH] = mac[TORH];
e1000x_grow_8reg_if_not_full(mac, GORCL, data_size + 4);
}
void

5
hw/net/igb_core.c
View file

@ -538,9 +538,8 @@ igb_on_tx_done_update_stats(IGBCore *core, struct NetTxPkt *tx_pkt, int qn)
g_assert_not_reached();
}
core->mac[GPTC] = core->mac[TPT];
core->mac[GOTCL] = core->mac[TOTL];
core->mac[GOTCH] = core->mac[TOTH];
e1000x_inc_reg_if_not_full(core->mac, GPTC);
e1000x_grow_8reg_if_not_full(core->mac, GOTCL, tot_len);
if (core->mac[MRQC] & 1) {
uint16_t pool = qn % IGB_NUM_VM_POOLS;