[PATCH v7 net-next 1/2] net: dsa: add optional stats64 support

[Oleksij Rempel]

Allow DSA drivers to export stats64

Signed-off-by: Oleksij Rempel <o.rem...@pengutronix.de>
Reviewed-by: Vladimir Oltean <olte...@gmail.com>
---
 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,
-- 
2.30.0