[PATCH v6 net-next 1/2] net: dsa: add optional stats64 support

From: Oleksij Rempel
Date: Sat Dec 19 2020 - 15:00:44 EST


Allow DSA drivers to export stats64

Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>
---
include/net/dsa.h | 4 +++-
net/dsa/slave.c | 14 +++++++++++++-
2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 4e60d2610f20..c50abb295fb6 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -477,7 +477,7 @@ struct dsa_switch_ops {
void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
struct phylink_link_state *state);
/*
- * ethtool hardware statistics.
+ * Port statistics counters.
*/
void (*get_strings)(struct dsa_switch *ds, int port,
u32 stringset, uint8_t *data);
@@ -486,6 +486,8 @@ struct dsa_switch_ops {
int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
int port, uint64_t *data);
+ void (*get_stats64)(struct dsa_switch *ds, int port,
+ struct rtnl_link_stats64 *s);

/*
* ethtool Wake-on-LAN
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 4a0498bf6c65..1fb823d3c7d7 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1602,6 +1602,18 @@ static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev)
return dp->ds->devlink ? &dp->devlink_port : NULL;
}

+static void dsa_slave_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *s)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct dsa_switch *ds = dp->ds;
+
+ if (ds->ops->get_stats64)
+ ds->ops->get_stats64(ds, dp->index, s);
+ else
+ dev_get_tstats64(dev, s);
+}
+
static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_open = dsa_slave_open,
.ndo_stop = dsa_slave_close,
@@ -1621,7 +1633,7 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
#endif
.ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
.ndo_setup_tc = dsa_slave_setup_tc,
- .ndo_get_stats64 = dev_get_tstats64,
+ .ndo_get_stats64 = dsa_slave_get_stats64,
.ndo_get_port_parent_id = dsa_slave_get_port_parent_id,
.ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
--
2.29.2