From: Martyna Szapar-Mudlaw Date: Thu, 15 May 2025 10:50:09 +0000 (+0200) Subject: ice: add link_down_events statistic X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e7aee24a89c863f2cab0d367df3265a66ad428d7;p=thirdparty%2Flinux.git ice: add link_down_events statistic Introduce a link_down_events counter to the ice driver, incremented each time the link transitions from up to down. This counter can help diagnose issues related to link stability, such as port flapping or unexpected link drops. The value is exposed via ethtool's get_link_ext_stats() interface. Reviewed-by: Kory Maincent Tested-by: Rinitha S (A Contingent worker at Intel) Signed-off-by: Martyna Szapar-Mudlaw Reviewed-by: Simon Horman Signed-off-by: Tony Nguyen --- diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h index ddd0ad68185b4..dcf87efb9f20f 100644 --- a/drivers/net/ethernet/intel/ice/ice.h +++ b/drivers/net/ethernet/intel/ice/ice.h @@ -614,6 +614,7 @@ struct ice_pf { u16 globr_count; /* Global reset count */ u16 empr_count; /* EMP reset count */ u16 pfr_count; /* PF reset count */ + u32 link_down_events; u8 wol_ena : 1; /* software state of WoL */ u32 wakeup_reason; /* last wakeup reason */ diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c index bbf9e6fd315b2..5863a86482f58 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c @@ -836,6 +836,15 @@ static void ice_set_msglevel(struct net_device *netdev, u32 data) #endif /* !CONFIG_DYNAMIC_DEBUG */ } +static void ice_get_link_ext_stats(struct net_device *netdev, + struct ethtool_link_ext_stats *stats) +{ + struct ice_netdev_priv *np = netdev_priv(netdev); + struct ice_pf *pf = np->vsi->back; + + stats->link_down_events = pf->link_down_events; +} + static int ice_get_eeprom_len(struct net_device *netdev) { struct ice_netdev_priv *np = netdev_priv(netdev); @@ -4784,6 +4793,7 @@ static const struct ethtool_ops ice_ethtool_ops = { .set_msglevel = ice_set_msglevel, .self_test = ice_self_test, .get_link = ethtool_op_get_link, + .get_link_ext_stats = ice_get_link_ext_stats, .get_eeprom_len = ice_get_eeprom_len, .get_eeprom = ice_get_eeprom, .get_coalesce = ice_get_coalesce, diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index d97d4b25b30d2..4e04721467bf7 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -1144,6 +1144,9 @@ ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up, if (link_up == old_link && link_speed == old_link_speed) return 0; + if (!link_up && old_link) + pf->link_down_events++; + ice_ptp_link_change(pf, link_up); if (ice_is_dcb_active(pf)) {