Commit 132b4ebf authored by Nitya Sunkad's avatar Nitya Sunkad Committed by David S. Miller
Browse files

ionic: add support for ethtool extended stat link_down_count 



Following the example of 'commit 9a0f830f ("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: default avatarNitya Sunkad <nitya.sunkad@amd.com>
Signed-off-by: default avatarShannon Nelson <shannon.nelson@amd.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 72d77bad

drivers/net/ethernet/pensando/ionic/ionic_ethtool.c

+10 −0
Original line number Diff line number Diff line
@@ -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,

drivers/net/ethernet/pensando/ionic/ionic_lif.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

		}

drivers/net/ethernet/pensando/ionic/ionic_lif.h

+1 −0
Original line number Diff line number Diff line
@@ -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;