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Message-ID: <20240222223629.158254-4-kuba@kernel.org>
Date: Thu, 22 Feb 2024 14:36:29 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
edumazet@...gle.com,
pabeni@...hat.com,
danielj@...dia.com,
mst@...hat.com,
amritha.nambiar@...el.com,
michael.chan@...adcom.com,
Jakub Kicinski <kuba@...nel.org>
Subject: [RFC net-next 3/3] eth: bnxt: support per-queue statistics
Support per-queue statistics API in bnxt.
$ ethtool -S eth0
NIC statistics:
[0]: rx_ucast_packets: 1418
[0]: rx_mcast_packets: 178
[0]: rx_bcast_packets: 0
[0]: rx_discards: 0
[0]: rx_errors: 0
[0]: rx_ucast_bytes: 1141815
[0]: rx_mcast_bytes: 16766
[0]: rx_bcast_bytes: 0
[0]: tx_ucast_packets: 1734
...
$ ./cli.py --spec netlink/specs/netdev.yaml \
--dump stats-get --json '{"projection": 1}'
[{'ifindex': 2,
'queue-id': 0,
'queue-type': 'rx',
'rx-alloc-fail': 0,
'rx-bytes': 1164931,
'rx-packets': 1641},
...
{'ifindex': 2,
'queue-id': 0,
'queue-type': 'tx',
'tx-bytes': 631494,
'tx-packets': 1771},
...
Reset the per queue counters:
$ ethtool -L eth0 combined 4
Inspect again:
$ ./cli.py --spec netlink/specs/netdev.yaml \
--dump stats-get --json '{"projection": 1}'
[{'ifindex': 2,
'queue-id': 0,
'queue-type': 'rx',
'rx-alloc-fail': 0,
'rx-bytes': 32397,
'rx-packets': 145},
...
{'ifindex': 2,
'queue-id': 0,
'queue-type': 'tx',
'tx-bytes': 37481,
'tx-packets': 196},
...
$ ethtool -S eth0 | head
NIC statistics:
[0]: rx_ucast_packets: 174
[0]: rx_mcast_packets: 3
[0]: rx_bcast_packets: 0
[0]: rx_discards: 0
[0]: rx_errors: 0
[0]: rx_ucast_bytes: 37151
[0]: rx_mcast_bytes: 267
[0]: rx_bcast_bytes: 0
[0]: tx_ucast_packets: 267
...
Totals are still correct:
$ ./cli.py --spec netlink/specs/netdev.yaml --dump stats-get
[{'ifindex': 2,
'rx-alloc-fail': 0,
'rx-bytes': 281949995,
'rx-packets': 216524,
'tx-bytes': 52694905,
'tx-packets': 75546}]
$ ip -s link show dev eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 14:23:f2:61:05:40 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped missed mcast
282519546 218100 0 0 0 516
TX: bytes packets errors dropped carrier collsns
53323054 77674 0 0 0 0
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 63 +++++++++++++++++++++++
1 file changed, 63 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6f415425dc14..3ee8e3b827e3 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -14432,6 +14432,68 @@ static const struct net_device_ops bnxt_netdev_ops = {
.ndo_bridge_setlink = bnxt_bridge_setlink,
};
+static void bnxt_get_queue_stats_rx(struct net_device *dev, int i,
+ struct netdev_queue_stats_rx *stats)
+{
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_cp_ring_info *cpr;
+ u64 *sw;
+
+ cpr = &bp->bnapi[i]->cp_ring;
+ sw = cpr->stats.sw_stats;
+
+ stats->packets = 0;
+ stats->packets += BNXT_GET_RING_STATS64(sw, rx_ucast_pkts);
+ stats->packets += BNXT_GET_RING_STATS64(sw, rx_mcast_pkts);
+ stats->packets += BNXT_GET_RING_STATS64(sw, rx_bcast_pkts);
+
+ stats->bytes = 0;
+ stats->bytes += BNXT_GET_RING_STATS64(sw, rx_ucast_bytes);
+ stats->bytes += BNXT_GET_RING_STATS64(sw, rx_mcast_bytes);
+ stats->bytes += BNXT_GET_RING_STATS64(sw, rx_bcast_bytes);
+
+ stats->alloc_fail = cpr->sw_stats.rx.rx_oom_discards;
+}
+
+static void bnxt_get_queue_stats_tx(struct net_device *dev, int i,
+ struct netdev_queue_stats_tx *stats)
+{
+ struct bnxt *bp = netdev_priv(dev);
+ u64 *sw;
+
+ sw = bp->bnapi[i]->cp_ring.stats.sw_stats;
+
+ stats->packets = 0;
+ stats->packets += BNXT_GET_RING_STATS64(sw, tx_ucast_pkts);
+ stats->packets += BNXT_GET_RING_STATS64(sw, tx_mcast_pkts);
+ stats->packets += BNXT_GET_RING_STATS64(sw, tx_bcast_pkts);
+
+ stats->bytes = 0;
+ stats->bytes += BNXT_GET_RING_STATS64(sw, tx_ucast_bytes);
+ stats->bytes += BNXT_GET_RING_STATS64(sw, tx_mcast_bytes);
+ stats->bytes += BNXT_GET_RING_STATS64(sw, tx_bcast_bytes);
+}
+
+static void bnxt_get_base_stats(struct net_device *dev,
+ struct netdev_queue_stats_rx *rx,
+ struct netdev_queue_stats_tx *tx)
+{
+ struct bnxt *bp = netdev_priv(dev);
+
+ rx->packets = bp->net_stats_prev.rx_packets;
+ rx->bytes = bp->net_stats_prev.rx_bytes;
+ rx->alloc_fail = bp->ring_err_stats_prev.rx_total_oom_discards;
+
+ tx->packets = bp->net_stats_prev.tx_packets;
+ tx->bytes = bp->net_stats_prev.tx_bytes;
+}
+
+static const struct netdev_stat_ops bnxt_stat_ops = {
+ .get_queue_stats_rx = bnxt_get_queue_stats_rx,
+ .get_queue_stats_tx = bnxt_get_queue_stats_tx,
+ .get_base_stats = bnxt_get_base_stats,
+};
+
static void bnxt_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
@@ -14879,6 +14941,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
goto init_err_free;
dev->netdev_ops = &bnxt_netdev_ops;
+ dev->stat_ops = &bnxt_stat_ops;
dev->watchdog_timeo = BNXT_TX_TIMEOUT;
dev->ethtool_ops = &bnxt_ethtool_ops;
pci_set_drvdata(pdev, dev);
--
2.43.2
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