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gve: add support for basic queue stats

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Implement netdev_stats_ops to export basic per-queue stats.

With page pool support for DQO added in the previous patches,
rx-alloc-fail captures failures in page pool allocations as
well since the rx_buf_alloc_fail stat tracked in the driver
is incremented when gve_alloc_buffer returns error.

Reviewed-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20241014202108.1051963-4-pkaligineedi@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Harshitha Ramamurthy 2024-10-14 13:21:08 -07:00 committed by Jakub Kicinski
parent ebdfae0d37
commit 2e5e0932df
1 changed files with 49 additions and 0 deletions
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49
drivers/net/ethernet/google/gve/gve_main.c
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@ -2561,6 +2561,54 @@ static const struct netdev_queue_mgmt_ops gve_queue_mgmt_ops = {
.ndo_queue_stop = gve_rx_queue_stop,
};
static void gve_get_rx_queue_stats(struct net_device *dev, int idx,
struct netdev_queue_stats_rx *rx_stats)
{
struct gve_priv *priv = netdev_priv(dev);
struct gve_rx_ring *rx = &priv->rx[idx];
unsigned int start;
do {
start = u64_stats_fetch_begin(&rx->statss);
rx_stats->packets = rx->rpackets;
rx_stats->bytes = rx->rbytes;
rx_stats->alloc_fail = rx->rx_skb_alloc_fail +
rx->rx_buf_alloc_fail;
} while (u64_stats_fetch_retry(&rx->statss, start));
}
static void gve_get_tx_queue_stats(struct net_device *dev, int idx,
struct netdev_queue_stats_tx *tx_stats)
{
struct gve_priv *priv = netdev_priv(dev);
struct gve_tx_ring *tx = &priv->tx[idx];
unsigned int start;
do {
start = u64_stats_fetch_begin(&tx->statss);
tx_stats->packets = tx->pkt_done;
tx_stats->bytes = tx->bytes_done;
} while (u64_stats_fetch_retry(&tx->statss, start));
}
static void gve_get_base_stats(struct net_device *dev,
struct netdev_queue_stats_rx *rx,
struct netdev_queue_stats_tx *tx)
{
rx->packets = 0;
rx->bytes = 0;
rx->alloc_fail = 0;
tx->packets = 0;
tx->bytes = 0;
}
static const struct netdev_stat_ops gve_stat_ops = {
.get_queue_stats_rx = gve_get_rx_queue_stats,
.get_queue_stats_tx = gve_get_tx_queue_stats,
.get_base_stats = gve_get_base_stats,
};
static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int max_tx_queues, max_rx_queues;
@ -2616,6 +2664,7 @@ static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->ethtool_ops = &gve_ethtool_ops;
dev->netdev_ops = &gve_netdev_ops;
dev->queue_mgmt_ops = &gve_queue_mgmt_ops;
dev->stat_ops = &gve_stat_ops;
/* Set default and supported features.
*