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ionic: add support for ethtool extended stat link_down_count

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Following the example of 'commit 9a0f830f80 ("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 <devname> to display the device link down count.

Signed-off-by: Nitya Sunkad <nitya.sunkad@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nitya Sunkad 2023-06-08 22:50:16 -07:00 committed by David S. Miller
parent 72d77bad12
commit 132b4ebfa0
3 changed files with 12 additions and 0 deletions
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10
drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
View File

@ -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,

1
drivers/net/ethernet/pensando/ionic/ionic_lif.c
View File

@ -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);
}

1
drivers/net/ethernet/pensando/ionic/ionic_lif.h
View File

@ -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;