From: Martyna Szapar-Mudlaw Date: Thu, 15 May 2025 10:50:10 +0000 (+0200) Subject: ixgbe: add link_down_events statistic X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9acae9e2e2893427ff1325ae5c5a880ac37315cb;p=thirdparty%2Fkernel%2Flinux.git ixgbe: add link_down_events statistic Introduce a link_down_events counter to the ixgbe 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 Reviewed-by: Aleksandr Loktionov Signed-off-by: Martyna Szapar-Mudlaw Tested-by: Rinitha S (A Contingent worker at Intel) Reviewed-by: Simon Horman Signed-off-by: Tony Nguyen --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index 47311b134a7a9..c6772cd2d8021 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -752,6 +752,7 @@ struct ixgbe_adapter { bool link_up; unsigned long sfp_poll_time; unsigned long link_check_timeout; + u32 link_down_events; struct timer_list service_timer; struct work_struct service_task; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index d8a919ab7027a..1dc1c6e611a40 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -1033,6 +1033,14 @@ static void ixgbe_get_regs(struct net_device *netdev, regs_buff[1144] = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT); } +static void ixgbe_get_link_ext_stats(struct net_device *netdev, + struct ethtool_link_ext_stats *stats) +{ + struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); + + stats->link_down_events = adapter->link_down_events; +} + static int ixgbe_get_eeprom_len(struct net_device *netdev) { struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); @@ -3719,6 +3727,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops = { .set_wol = ixgbe_set_wol, .nway_reset = ixgbe_nway_reset, .get_link = ethtool_op_get_link, + .get_link_ext_stats = ixgbe_get_link_ext_stats, .get_eeprom_len = ixgbe_get_eeprom_len, .get_eeprom = ixgbe_get_eeprom, .set_eeprom = ixgbe_set_eeprom, @@ -3764,6 +3773,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops_e610 = { .set_wol = ixgbe_set_wol_e610, .nway_reset = ixgbe_nway_reset, .get_link = ethtool_op_get_link, + .get_link_ext_stats = ixgbe_get_link_ext_stats, .get_eeprom_len = ixgbe_get_eeprom_len, .get_eeprom = ixgbe_get_eeprom, .set_eeprom = ixgbe_set_eeprom, diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 03d31e5b131dc..1982314aaf3c1 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -7991,6 +7991,8 @@ static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter) if (!netif_carrier_ok(netdev)) return; + adapter->link_down_events++; + /* poll for SFP+ cable when link is down */ if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;