[PATCH net-next v3 1/2] net: mana: Move hardware counter stats from per-port to per-VF context

Erni Sri Satya Vennela
2025-11-14T11:43:22Z

Move hardware counter (HC) statistics from mana_port_context to
mana_context to enable sharing stats across multiple network ports
on the same MANA VF. Previously, each network port queried
hardware counters independently using MANA_QUERY_GF_STAT command
(GF = Generic Function stats from GDMA hardware), resulting in
redundant queries when multiple ports existed on the same device.

Isolate hardware counter stats by introducing mana_ethtool_hc_stats
in mana_context and update the code to ensure all stats are properly
reported via ethtool -S <interface>, maintaining consistency with
previous behavior.

Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
---
Changes in v3:
* Update commit message for more readability.
* Use reverse x-mas tree format in mana_query_gf_stats.
Changes in v2:
* No change
---
drivers/net/ethernet/microsoft/mana/mana_en.c | 67 ++++++++-------
.../ethernet/microsoft/mana/mana_ethtool.c | 85 ++++++++++---------
include/net/mana/mana.h | 14 +--
3 files changed, 90 insertions(+), 76 deletions(-)

diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index cccd5b63cee6..d8ce4402c696 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -2809,11 +2809,12 @@ int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx,
return 0;
}

-void mana_query_gf_stats(struct mana_port_context *apc)
+void mana_query_gf_stats(struct mana_context *ac)
{
+ struct gdma_context *gc = ac->gdma_dev->gdma_context;
struct mana_query_gf_stat_resp resp = {};
struct mana_query_gf_stat_req req = {};
- struct net_device *ndev = apc->ndev;
+ struct device *dev = gc->dev;
int err;

mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_GF_STAT,
@@ -2847,52 +2848,52 @@ void mana_query_gf_stats(struct mana_port_context *apc)
STATISTICS_FLAGS_HC_TX_BCAST_BYTES |
STATISTICS_FLAGS_TX_ERRORS_GDMA_ERROR;

- err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+ err = mana_send_request(ac, &req, sizeof(req), &resp,
sizeof(resp));
if (err) {
- netdev_err(ndev, "Failed to query GF stats: %d\n", err);
+ dev_err(dev, "Failed to query GF stats: %d\n", err);
return;
}
err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_GF_STAT,
sizeof(resp));
if (err || resp.hdr.status) {
- netdev_err(ndev, "Failed to query GF stats: %d, 0x%x\n", err,
- resp.hdr.status);
+ dev_err(dev, "Failed to query GF stats: %d, 0x%x\n", err,
+ resp.hdr.status);
return;
}

- apc->eth_stats.hc_rx_discards_no_wqe = resp.rx_discards_nowqe;
- apc->eth_stats.hc_rx_err_vport_disabled = resp.rx_err_vport_disabled;
- apc->eth_stats.hc_rx_bytes = resp.hc_rx_bytes;
- apc->eth_stats.hc_rx_ucast_pkts = resp.hc_rx_ucast_pkts;
- apc->eth_stats.hc_rx_ucast_bytes = resp.hc_rx_ucast_bytes;
- apc->eth_stats.hc_rx_bcast_pkts = resp.hc_rx_bcast_pkts;
- apc->eth_stats.hc_rx_bcast_bytes = resp.hc_rx_bcast_bytes;
- apc->eth_stats.hc_rx_mcast_pkts = resp.hc_rx_mcast_pkts;
- apc->eth_stats.hc_rx_mcast_bytes = resp.hc_rx_mcast_bytes;
- apc->eth_stats.hc_tx_err_gf_disabled = resp.tx_err_gf_disabled;
- apc->eth_stats.hc_tx_err_vport_disabled = resp.tx_err_vport_disabled;
- apc->eth_stats.hc_tx_err_inval_vportoffset_pkt =
+ ac->hc_stats.hc_rx_discards_no_wqe = resp.rx_discards_nowqe;
+ ac->hc_stats.hc_rx_err_vport_disabled = resp.rx_err_vport_disabled;
+ ac->hc_stats.hc_rx_bytes = resp.hc_rx_bytes;
+ ac->hc_stats.hc_rx_ucast_pkts = resp.hc_rx_ucast_pkts;
+ ac->hc_stats.hc_rx_ucast_bytes = resp.hc_rx_ucast_bytes;
+ ac->hc_stats.hc_rx_bcast_pkts = resp.hc_rx_bcast_pkts;
+ ac->hc_stats.hc_rx_bcast_bytes = resp.hc_rx_bcast_bytes;
+ ac->hc_stats.hc_rx_mcast_pkts = resp.hc_rx_mcast_pkts;
+ ac->hc_stats.hc_rx_mcast_bytes = resp.hc_rx_mcast_bytes;
+ ac->hc_stats.hc_tx_err_gf_disabled = resp.tx_err_gf_disabled;
+ ac->hc_stats.hc_tx_err_vport_disabled = resp.tx_err_vport_disabled;
+ ac->hc_stats.hc_tx_err_inval_vportoffset_pkt =
resp.tx_err_inval_vport_offset_pkt;
- apc->eth_stats.hc_tx_err_vlan_enforcement =
+ ac->hc_stats.hc_tx_err_vlan_enforcement =
resp.tx_err_vlan_enforcement;
- apc->eth_stats.hc_tx_err_eth_type_enforcement =
+ ac->hc_stats.hc_tx_err_eth_type_enforcement =
resp.tx_err_ethtype_enforcement;
- apc->eth_stats.hc_tx_err_sa_enforcement = resp.tx_err_SA_enforcement;
- apc->eth_stats.hc_tx_err_sqpdid_enforcement =
+ ac->hc_stats.hc_tx_err_sa_enforcement = resp.tx_err_SA_enforcement;
+ ac->hc_stats.hc_tx_err_sqpdid_enforcement =
resp.tx_err_SQPDID_enforcement;
- apc->eth_stats.hc_tx_err_cqpdid_enforcement =
+ ac->hc_stats.hc_tx_err_cqpdid_enforcement =
resp.tx_err_CQPDID_enforcement;
- apc->eth_stats.hc_tx_err_mtu_violation = resp.tx_err_mtu_violation;
- apc->eth_stats.hc_tx_err_inval_oob = resp.tx_err_inval_oob;
- apc->eth_stats.hc_tx_bytes = resp.hc_tx_bytes;
- apc->eth_stats.hc_tx_ucast_pkts = resp.hc_tx_ucast_pkts;
- apc->eth_stats.hc_tx_ucast_bytes = resp.hc_tx_ucast_bytes;
- apc->eth_stats.hc_tx_bcast_pkts = resp.hc_tx_bcast_pkts;
- apc->eth_stats.hc_tx_bcast_bytes = resp.hc_tx_bcast_bytes;
- apc->eth_stats.hc_tx_mcast_pkts = resp.hc_tx_mcast_pkts;
- apc->eth_stats.hc_tx_mcast_bytes = resp.hc_tx_mcast_bytes;
- apc->eth_stats.hc_tx_err_gdma = resp.tx_err_gdma;
+ ac->hc_stats.hc_tx_err_mtu_violation = resp.tx_err_mtu_violation;
+ ac->hc_stats.hc_tx_err_inval_oob = resp.tx_err_inval_oob;
+ ac->hc_stats.hc_tx_bytes = resp.hc_tx_bytes;
+ ac->hc_stats.hc_tx_ucast_pkts = resp.hc_tx_ucast_pkts;
+ ac->hc_stats.hc_tx_ucast_bytes = resp.hc_tx_ucast_bytes;
+ ac->hc_stats.hc_tx_bcast_pkts = resp.hc_tx_bcast_pkts;
+ ac->hc_stats.hc_tx_bcast_bytes = resp.hc_tx_bcast_bytes;
+ ac->hc_stats.hc_tx_mcast_pkts = resp.hc_tx_mcast_pkts;
+ ac->hc_stats.hc_tx_mcast_bytes = resp.hc_tx_mcast_bytes;
+ ac->hc_stats.hc_tx_err_gdma = resp.tx_err_gdma;
}

void mana_query_phy_stats(struct mana_port_context *apc)
diff --git a/drivers/net/ethernet/microsoft/mana/mana_ethtool.c b/drivers/net/ethernet/microsoft/mana/mana_ethtool.c
index a1afa75a9463..3dfd96146424 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_ethtool.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_ethtool.c
@@ -15,66 +15,69 @@ struct mana_stats_desc {
static const struct mana_stats_desc mana_eth_stats[] = {
{"stop_queue", offsetof(struct mana_ethtool_stats, stop_queue)},
{"wake_queue", offsetof(struct mana_ethtool_stats, wake_queue)},
- {"hc_rx_discards_no_wqe", offsetof(struct mana_ethtool_stats,
+ {"tx_cq_err", offsetof(struct mana_ethtool_stats, tx_cqe_err)},
+ {"tx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
+ tx_cqe_unknown_type)},
+ {"rx_coalesced_err", offsetof(struct mana_ethtool_stats,
+ rx_coalesced_err)},
+ {"rx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
+ rx_cqe_unknown_type)},
+};
+
+static const struct mana_stats_desc mana_hc_stats[] = {
+ {"hc_rx_discards_no_wqe", offsetof(struct mana_ethtool_hc_stats,
hc_rx_discards_no_wqe)},
- {"hc_rx_err_vport_disabled", offsetof(struct mana_ethtool_stats,
+ {"hc_rx_err_vport_disabled", offsetof(struct mana_ethtool_hc_stats,
hc_rx_err_vport_disabled)},
- {"hc_rx_bytes", offsetof(struct mana_ethtool_stats, hc_rx_bytes)},
- {"hc_rx_ucast_pkts", offsetof(struct mana_ethtool_stats,
+ {"hc_rx_bytes", offsetof(struct mana_ethtool_hc_stats, hc_rx_bytes)},
+ {"hc_rx_ucast_pkts", offsetof(struct mana_ethtool_hc_stats,
hc_rx_ucast_pkts)},
- {"hc_rx_ucast_bytes", offsetof(struct mana_ethtool_stats,
+ {"hc_rx_ucast_bytes", offsetof(struct mana_ethtool_hc_stats,
hc_rx_ucast_bytes)},
- {"hc_rx_bcast_pkts", offsetof(struct mana_ethtool_stats,
+ {"hc_rx_bcast_pkts", offsetof(struct mana_ethtool_hc_stats,
hc_rx_bcast_pkts)},
- {"hc_rx_bcast_bytes", offsetof(struct mana_ethtool_stats,
+ {"hc_rx_bcast_bytes", offsetof(struct mana_ethtool_hc_stats,
hc_rx_bcast_bytes)},
- {"hc_rx_mcast_pkts", offsetof(struct mana_ethtool_stats,
- hc_rx_mcast_pkts)},
- {"hc_rx_mcast_bytes", offsetof(struct mana_ethtool_stats,
+ {"hc_rx_mcast_pkts", offsetof(struct mana_ethtool_hc_stats,
+ hc_rx_mcast_pkts)},
+ {"hc_rx_mcast_bytes", offsetof(struct mana_ethtool_hc_stats,
hc_rx_mcast_bytes)},
- {"hc_tx_err_gf_disabled", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_err_gf_disabled", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_gf_disabled)},
- {"hc_tx_err_vport_disabled", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_err_vport_disabled", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_vport_disabled)},
{"hc_tx_err_inval_vportoffset_pkt",
- offsetof(struct mana_ethtool_stats,
+ offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_inval_vportoffset_pkt)},
- {"hc_tx_err_vlan_enforcement", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_err_vlan_enforcement", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_vlan_enforcement)},
{"hc_tx_err_eth_type_enforcement",
- offsetof(struct mana_ethtool_stats, hc_tx_err_eth_type_enforcement)},
- {"hc_tx_err_sa_enforcement", offsetof(struct mana_ethtool_stats,
+ offsetof(struct mana_ethtool_hc_stats, hc_tx_err_eth_type_enforcement)},
+ {"hc_tx_err_sa_enforcement", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_sa_enforcement)},
{"hc_tx_err_sqpdid_enforcement",
- offsetof(struct mana_ethtool_stats, hc_tx_err_sqpdid_enforcement)},
+ offsetof(struct mana_ethtool_hc_stats, hc_tx_err_sqpdid_enforcement)},
{"hc_tx_err_cqpdid_enforcement",
- offsetof(struct mana_ethtool_stats, hc_tx_err_cqpdid_enforcement)},
- {"hc_tx_err_mtu_violation", offsetof(struct mana_ethtool_stats,
+ offsetof(struct mana_ethtool_hc_stats, hc_tx_err_cqpdid_enforcement)},
+ {"hc_tx_err_mtu_violation", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_mtu_violation)},
- {"hc_tx_err_inval_oob", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_err_inval_oob", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_inval_oob)},
- {"hc_tx_err_gdma", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_err_gdma", offsetof(struct mana_ethtool_hc_stats,
hc_tx_err_gdma)},
- {"hc_tx_bytes", offsetof(struct mana_ethtool_stats, hc_tx_bytes)},
- {"hc_tx_ucast_pkts", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_bytes", offsetof(struct mana_ethtool_hc_stats, hc_tx_bytes)},
+ {"hc_tx_ucast_pkts", offsetof(struct mana_ethtool_hc_stats,
hc_tx_ucast_pkts)},
- {"hc_tx_ucast_bytes", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_ucast_bytes", offsetof(struct mana_ethtool_hc_stats,
hc_tx_ucast_bytes)},
- {"hc_tx_bcast_pkts", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_bcast_pkts", offsetof(struct mana_ethtool_hc_stats,
hc_tx_bcast_pkts)},
- {"hc_tx_bcast_bytes", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_bcast_bytes", offsetof(struct mana_ethtool_hc_stats,
hc_tx_bcast_bytes)},
- {"hc_tx_mcast_pkts", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_mcast_pkts", offsetof(struct mana_ethtool_hc_stats,
hc_tx_mcast_pkts)},
- {"hc_tx_mcast_bytes", offsetof(struct mana_ethtool_stats,
+ {"hc_tx_mcast_bytes", offsetof(struct mana_ethtool_hc_stats,
hc_tx_mcast_bytes)},
- {"tx_cq_err", offsetof(struct mana_ethtool_stats, tx_cqe_err)},
- {"tx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
- tx_cqe_unknown_type)},
- {"rx_coalesced_err", offsetof(struct mana_ethtool_stats,
- rx_coalesced_err)},
- {"rx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
- rx_cqe_unknown_type)},
};

static const struct mana_stats_desc mana_phy_stats[] = {
@@ -138,7 +141,7 @@ static int mana_get_sset_count(struct net_device *ndev, int stringset)
if (stringset != ETH_SS_STATS)
return -EINVAL;

- return ARRAY_SIZE(mana_eth_stats) + ARRAY_SIZE(mana_phy_stats) +
+ return ARRAY_SIZE(mana_eth_stats) + ARRAY_SIZE(mana_phy_stats) + ARRAY_SIZE(mana_hc_stats) +
num_queues * (MANA_STATS_RX_COUNT + MANA_STATS_TX_COUNT);
}

@@ -150,10 +153,12 @@ static void mana_get_strings(struct net_device *ndev, u32 stringset, u8 *data)

if (stringset != ETH_SS_STATS)
return;
-
for (i = 0; i < ARRAY_SIZE(mana_eth_stats); i++)
ethtool_puts(&data, mana_eth_stats[i].name);

+ for (i = 0; i < ARRAY_SIZE(mana_hc_stats); i++)
+ ethtool_puts(&data, mana_hc_stats[i].name);
+
for (i = 0; i < ARRAY_SIZE(mana_phy_stats); i++)
ethtool_puts(&data, mana_phy_stats[i].name);

@@ -186,6 +191,7 @@ static void mana_get_ethtool_stats(struct net_device *ndev,
struct mana_port_context *apc = netdev_priv(ndev);
unsigned int num_queues = apc->num_queues;
void *eth_stats = &apc->eth_stats;
+ void *hc_stats = &apc->ac->hc_stats;
void *phy_stats = &apc->phy_stats;
struct mana_stats_rx *rx_stats;
struct mana_stats_tx *tx_stats;
@@ -208,7 +214,7 @@ static void mana_get_ethtool_stats(struct net_device *ndev,
if (!apc->port_is_up)
return;
/* we call mana function to update stats from GDMA */
- mana_query_gf_stats(apc);
+ mana_query_gf_stats(apc->ac);

/* We call this mana function to get the phy stats from GDMA and includes
* aggregate tx/rx drop counters, Per-TC(Traffic Channel) tx/rx and pause
@@ -219,6 +225,9 @@ static void mana_get_ethtool_stats(struct net_device *ndev,
for (q = 0; q < ARRAY_SIZE(mana_eth_stats); q++)
data[i++] = *(u64 *)(eth_stats + mana_eth_stats[q].offset);

+ for (q = 0; q < ARRAY_SIZE(mana_hc_stats); q++)
+ data[i++] = *(u64 *)(hc_stats + mana_hc_stats[q].offset);
+
for (q = 0; q < ARRAY_SIZE(mana_phy_stats); q++)
data[i++] = *(u64 *)(phy_stats + mana_phy_stats[q].offset);

diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h
index 8906901535f5..3484f42803e3 100644
--- a/include/net/mana/mana.h
+++ b/include/net/mana/mana.h
@@ -375,6 +375,13 @@ struct mana_tx_qp {
struct mana_ethtool_stats {
u64 stop_queue;
u64 wake_queue;
+ u64 tx_cqe_err;
+ u64 tx_cqe_unknown_type;
+ u64 rx_coalesced_err;
+ u64 rx_cqe_unknown_type;
+};
+
+struct mana_ethtool_hc_stats {
u64 hc_rx_discards_no_wqe;
u64 hc_rx_err_vport_disabled;
u64 hc_rx_bytes;
@@ -402,10 +409,6 @@ struct mana_ethtool_stats {
u64 hc_tx_mcast_pkts;
u64 hc_tx_mcast_bytes;
u64 hc_tx_err_gdma;
- u64 tx_cqe_err;
- u64 tx_cqe_unknown_type;
- u64 rx_coalesced_err;
- u64 rx_cqe_unknown_type;
};

struct mana_ethtool_phy_stats {
@@ -473,6 +476,7 @@ struct mana_context {
u16 num_ports;
u8 bm_hostmode;

+ struct mana_ethtool_hc_stats hc_stats;
struct mana_eq *eqs;
struct dentry *mana_eqs_debugfs;

@@ -577,7 +581,7 @@ u32 mana_run_xdp(struct net_device *ndev, struct mana_rxq *rxq,
struct bpf_prog *mana_xdp_get(struct mana_port_context *apc);
void mana_chn_setxdp(struct mana_port_context *apc, struct bpf_prog *prog);
int mana_bpf(struct net_device *ndev, struct netdev_bpf *bpf);
-void mana_query_gf_stats(struct mana_port_context *apc);
+void mana_query_gf_stats(struct mana_context *ac);
int mana_query_link_cfg(struct mana_port_context *apc);
int mana_set_bw_clamp(struct mana_port_context *apc, u32 speed,
int enable_clamping);
--
2.34.1