From 132b4ebfa090492663f84144a1e7afaca54cd58a Mon Sep 17 00:00:00 2001 From: Nitya Sunkad Date: Thu, 8 Jun 2023 22:50:16 -0700 Subject: [PATCH] ionic: add support for ethtool extended stat link_down_count Following the example of 'commit 9a0f830f8026 ("ethtool: linkstate: add a statistic for PHY down events")', added support for link down events. Add callback ionic_get_link_ext_stats to ionic_ethtool.c to support link_down_count, a property of netdev that gets reported exclusively on physical link down events. Run ethtool -I to display the device link down count. Signed-off-by: Nitya Sunkad Signed-off-by: Shannon Nelson Signed-off-by: David S. Miller --- drivers/net/ethernet/pensando/ionic/ionic_ethtool.c | 10 ++++++++++ drivers/net/ethernet/pensando/ionic/ionic_lif.c | 1 + drivers/net/ethernet/pensando/ionic/ionic_lif.h | 1 + 3 files changed, 12 insertions(+) diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c index 9b2b96f..3a6b0a9 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c @@ -104,6 +104,15 @@ static void ionic_get_regs(struct net_device *netdev, struct ethtool_regs *regs, memcpy_fromio(p + offset, lif->ionic->idev.dev_cmd_regs->words, size); } +static void ionic_get_link_ext_stats(struct net_device *netdev, + struct ethtool_link_ext_stats *stats) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + if (lif->ionic->pdev->is_physfn) + stats->link_down_events = lif->link_down_count; +} + static int ionic_get_link_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *ks) { @@ -1074,6 +1083,7 @@ static const struct ethtool_ops ionic_ethtool_ops = { .get_regs_len = ionic_get_regs_len, .get_regs = ionic_get_regs, .get_link = ethtool_op_get_link, + .get_link_ext_stats = ionic_get_link_ext_stats, .get_link_ksettings = ionic_get_link_ksettings, .set_link_ksettings = ionic_set_link_ksettings, .get_coalesce = ionic_get_coalesce, diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 957027e..6ccc1ea 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -168,6 +168,7 @@ static void ionic_link_status_check(struct ionic_lif *lif) } } else { if (netif_carrier_ok(netdev)) { + lif->link_down_count++; netdev_info(netdev, "Link down\n"); netif_carrier_off(netdev); } diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h index c9c4c46..fd2ea67 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h @@ -201,6 +201,7 @@ struct ionic_lif { u64 hw_features; bool registered; u16 lif_type; + unsigned int link_down_count; unsigned int nmcast; unsigned int nucast; unsigned int nvlans; -- 2.7.4