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eth: fbnic: Report XDP stats via ethtool

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Add support to collect XDP stats via ethtool API. We record
packets and bytes sent, and packets dropped on the XDP_TX path.

ethtool -S eth0 | grep xdp | grep -v "0"
     xdp_tx_queue_13_packets: 2
     xdp_tx_queue_13_bytes: 16126

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com>
Link: https://patch.msgid.link/20250813221319.3367670-10-mohsin.bashr@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Mohsin Bashir
2025-08-13 15:13:19 -07:00
committed by Paolo Abeni
parent 5213ff0863
commit 7fedb8f267
1 changed files with 49 additions and 1 deletions
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drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
+49 -1
View File
@@ -112,6 +112,20 @@ static const struct fbnic_stat fbnic_gstrings_hw_q_stats[] = {
FBNIC_HW_RXB_DEQUEUE_STATS_LEN * FBNIC_RXB_DEQUEUE_INDICES + \
FBNIC_HW_Q_STATS_LEN * FBNIC_MAX_QUEUES)
#define FBNIC_QUEUE_STAT(name, stat) \
FBNIC_STAT_FIELDS(fbnic_ring, name, stat)
static const struct fbnic_stat fbnic_gstrings_xdp_stats[] = {
FBNIC_QUEUE_STAT("xdp_tx_queue_%u_packets", stats.packets),
FBNIC_QUEUE_STAT("xdp_tx_queue_%u_bytes", stats.bytes),
FBNIC_QUEUE_STAT("xdp_tx_queue_%u_dropped", stats.dropped),
};
#define FBNIC_XDP_STATS_LEN ARRAY_SIZE(fbnic_gstrings_xdp_stats)
#define FBNIC_STATS_LEN \
(FBNIC_HW_STATS_LEN + FBNIC_XDP_STATS_LEN * FBNIC_MAX_XDPQS)
static void
fbnic_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
{
@@ -422,6 +436,16 @@ static void fbnic_get_rxb_dequeue_strings(u8 **data, unsigned int idx)
ethtool_sprintf(data, stat->string, idx);
}
static void fbnic_get_xdp_queue_strings(u8 **data, unsigned int idx)
{
const struct fbnic_stat *stat;
int i;
stat = fbnic_gstrings_xdp_stats;
for (i = 0; i < FBNIC_XDP_STATS_LEN; i++, stat++)
ethtool_sprintf(data, stat->string, idx);
}
static void fbnic_get_strings(struct net_device *dev, u32 sset, u8 *data)
{
const struct fbnic_stat *stat;
@@ -447,6 +471,9 @@ static void fbnic_get_strings(struct net_device *dev, u32 sset, u8 *data)
for (i = 0; i < FBNIC_HW_Q_STATS_LEN; i++, stat++)
ethtool_sprintf(&data, stat->string, idx);
}
for (i = 0; i < FBNIC_MAX_XDPQS; i++)
fbnic_get_xdp_queue_strings(&data, i);
break;
}
}
@@ -464,6 +491,24 @@ static void fbnic_report_hw_stats(const struct fbnic_stat *stat,
}
}
static void fbnic_get_xdp_queue_stats(struct fbnic_ring *ring, u64 **data)
{
const struct fbnic_stat *stat;
int i;
if (!ring) {
*data += FBNIC_XDP_STATS_LEN;
return;
}
stat = fbnic_gstrings_xdp_stats;
for (i = 0; i < FBNIC_XDP_STATS_LEN; i++, stat++, (*data)++) {
u8 *p = (u8 *)ring + stat->offset;
**data = *(u64 *)p;
}
}
static void fbnic_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
@@ -511,13 +556,16 @@ static void fbnic_get_ethtool_stats(struct net_device *dev,
FBNIC_HW_Q_STATS_LEN, &data);
}
spin_unlock(&fbd->hw_stats_lock);
for (i = 0; i < FBNIC_MAX_XDPQS; i++)
fbnic_get_xdp_queue_stats(fbn->tx[i + FBNIC_MAX_TXQS], &data);
}
static int fbnic_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return FBNIC_HW_STATS_LEN;
return FBNIC_STATS_LEN;
default:
return -EOPNOTSUPP;
}