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From 2039a9ff462d50251fd800ce4418f76230373783 Mon Sep 17 00:00:00 2001
From: Camelia Groza <camelia.groza@nxp.com>
Date: Mon, 22 Jul 2019 14:50:36 +0300
Subject: [PATCH] dpaa_eth: ERR010022: preserve timestamping

Maintain all timestamping fields when copying the skb.

Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 9 +++++++++
 1 file changed, 9 insertions(+)

--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -2196,6 +2196,15 @@ static struct sk_buff *dpaa_errata_a0100
 	}
 	skb_copy_header(nskb, skb);
 
+	/* Copy relevant timestamp info from the old skb to the new */
+	if (priv->tx_tstamp) {
+		skb_shinfo(nskb)->tx_flags = skb_shinfo(skb)->tx_flags;
+		skb_shinfo(nskb)->hwtstamps = skb_shinfo(skb)->hwtstamps;
+		skb_shinfo(nskb)->tskey = skb_shinfo(skb)->tskey;
+		if (skb->sk)
+			skb_set_owner_w(nskb, skb->sk);
+	}
+
 	/* We move the headroom when we align it so we have to reset the
 	 * network and transport header offsets relative to the new data
 	 * pointer. The checksum offload relies on these offsets.