From: Sridhar Samudrala <sridhar.samudr...@intel.com>
Sample script that shows ethtool stats on VF representor netdev
PF: enp5s0f0, VF0: enp5s2 VF_REP0: enp5s0f0-vf0
# echo 2 > /sys/class/net/enp5s0f0/device/sriov_numvfs
# ip link set enp5s2 up
# ethtool -S enp5s0f0-vf0
NIC statistics:
tx_bytes: 0
tx_unicast: 0
tx_multicast: 0
tx_broadcast: 0
tx_discards: 0
tx_errors: 0
rx_bytes: 140
rx_unicast: 0
rx_multicast: 2
rx_broadcast: 0
rx_discards: 0
rx_unknown_protocol: 0
Signed-off-by: Sridhar Samudrala <sridhar.samudr...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
drivers/net/ethernet/intel/i40e/i40e.h | 1 +
drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 72 ++++++++++++++++++++++
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 1 +
3 files changed, 74 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h
b/drivers/net/ethernet/intel/i40e/i40e.h
index 19103a6..13b1f75 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -866,4 +866,5 @@ i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf);
i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf);
i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf);
void i40e_print_link_message(struct i40e_vsi *vsi, bool isup);
+void i40e_set_vf_netdev_ethtool_ops(struct net_device *netdev);
#endif /* _I40E_H_ */
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 1835186..1f3bbb05 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -3116,3 +3116,75 @@ void i40e_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &i40e_ethtool_ops;
}
+
+/* As the VF Port representor(VFPR) represents the switch port corresponding
+ * to a VF, the tx_ and rx_ strings are swapped to indicate that the frames
+ * transmitted from VF are received on VFPR and the frames received on VF are
+ * transmitted from VFPR.
+ */
+static const char i40e_vf_netdev_ethtool_sset[][ETH_GSTRING_LEN] = {
+ "tx_bytes",
+ "tx_unicast",
+ "tx_multicast",
+ "tx_broadcast",
+ "tx_discards",
+ "tx_errors",
+ "rx_bytes",
+ "rx_unicast",
+ "rx_multicast",
+ "rx_broadcast",
+ "rx_discards",
+ "rx_unknown_protocol",
+};
+
+#define I40E_VF_NETDEV_ETHTOOL_STAT_COUNT \
+ ARRAY_SIZE(i40e_vf_netdev_ethtool_sset)
+
+static void i40e_vf_netdev_ethtool_get_strings(struct net_device *dev,
+ u32 stringset,
+ u8 *ethtool_strings)
+{
+ switch (stringset) {
+ case ETH_SS_STATS:
+ memcpy(ethtool_strings, &i40e_vf_netdev_ethtool_sset,
+ sizeof(i40e_vf_netdev_ethtool_sset));
+ break;
+ }
+}
+
+static int i40e_vf_netdev_ethtool_get_sset_count(struct net_device *dev,
+ int stringset)
+{
+ switch (stringset) {
+ case ETH_SS_STATS:
+ return I40E_VF_NETDEV_ETHTOOL_STAT_COUNT;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void i40e_vf_netdev_ethtool_get_stats(struct net_device *dev,
+ struct ethtool_stats *target_ethtool_stats,
+ u64 *target_stat_values)
+{
+ struct i40e_vf_netdev_priv *priv = netdev_priv(dev);
+ struct i40e_vf *vf = priv->vf;
+ struct i40e_pf *pf = vf->pf;
+ struct i40e_vsi *vsi;
+
+ vsi = pf->vsi[vf->lan_vsi_idx];
+ i40e_update_stats(vsi);
+ memcpy(target_stat_values, &vsi->eth_stats,
+ I40E_VF_NETDEV_ETHTOOL_STAT_COUNT * 8);
+}
+
+static const struct ethtool_ops i40e_vf_netdev_ethtool_ops = {
+ .get_strings = i40e_vf_netdev_ethtool_get_strings,
+ .get_ethtool_stats = i40e_vf_netdev_ethtool_get_stats,
+ .get_sset_count = i40e_vf_netdev_ethtool_get_sset_count,
+};
+
+void i40e_set_vf_netdev_ethtool_ops(struct net_device *netdev)
+{
+ netdev->ethtool_ops = &i40e_vf_netdev_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 11f6970..cacb797 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1049,6 +1049,7 @@ int i40e_alloc_vf_netdev(struct i40e_vf *vf, u16 vf_num)
priv->vf = &(pf->vf[vf_num]);
netdev->netdev_ops = &i40e_vf_netdev_ops;
+ i40e_set_vf_netdev_ethtool_ops(netdev);
netif_carrier_off(netdev);
netif_tx_disable(netdev);
--
2.7.4
