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Date:   Sun, 22 Oct 2023 10:56:22 +0200
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From:   Jan Kiszka <jan.kiszka@siemens.com>
Subject: [PATCH] net: ti: icssg-prueth: Add phys_port_name support
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To:     "David S. Miller" <davem@davemloft.net>,
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        MD Danish Anwar <danishanwar@ti.com>
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        "Lopes Ivo, Diogo Miguel (T CED IFD-PT)" <diogo.ivo@siemens.com>,
        Nishanth Menon <nm@ti.com>,
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From: Jan Kiszka <jan.kiszka@siemens.com>

Helps identifying the ports in udev rules e.g.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---

Seems such logic was lost during the upstream rewrite of the SDK 
version.

 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 4914d0ef58e9..ffae89a6ccc5 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -1653,6 +1653,19 @@ static void emac_ndo_get_stats64(struct net_device *ndev,
 	stats->tx_dropped = ndev->stats.tx_dropped;
 }
 
+static int emac_ndo_get_phys_port_name(struct net_device *ndev, char *name,
+				       size_t len)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	int ret;
+
+	ret = snprintf(name, len, "p%d", emac->port_id);
+	if (ret >= len)
+		return -EINVAL;
+
+	return 0;
+}
+
 static const struct net_device_ops emac_netdev_ops = {
 	.ndo_open = emac_ndo_open,
 	.ndo_stop = emac_ndo_stop,
@@ -1663,6 +1676,7 @@ static const struct net_device_ops emac_netdev_ops = {
 	.ndo_set_rx_mode = emac_ndo_set_rx_mode,
 	.ndo_eth_ioctl = emac_ndo_ioctl,
 	.ndo_get_stats64 = emac_ndo_get_stats64,
+	.ndo_get_phys_port_name = emac_ndo_get_phys_port_name,
 };
 
 /* get emac_port corresponding to eth_node name */
-- 
2.35.3