[PATCH AUTOSEL 4.19 77/83] dpaa_eth: NETIF_F_LLTX requires to do our own update of trans_start

[Sasha Levin]

From: Madalin Bucur <madalin.bu...@nxp.com>

[ Upstream commit c6ddfb9a963f0cac0f7365acfc87f3f3b33a3b69 ]

As txq_trans_update() only updates trans_start when the lock is held,
trans_start does not get updated if NETIF_F_LLTX is declared.

Signed-off-by: Madalin Bucur <madalin.bu...@nxp.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c 
b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 65a22cd9aef2..029730bbe7db 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -2052,6 +2052,7 @@ static int dpaa_start_xmit(struct sk_buff *skb, struct 
net_device *net_dev)
        bool nonlinear = skb_is_nonlinear(skb);
        struct rtnl_link_stats64 *percpu_stats;
        struct dpaa_percpu_priv *percpu_priv;
+       struct netdev_queue *txq;
        struct dpaa_priv *priv;
        struct qm_fd fd;
        int offset = 0;
@@ -2101,6 +2102,11 @@ static int dpaa_start_xmit(struct sk_buff *skb, struct 
net_device *net_dev)
        if (unlikely(err < 0))
                goto skb_to_fd_failed;
 
+       txq = netdev_get_tx_queue(net_dev, queue_mapping);
+
+       /* LLTX requires to do our own update of trans_start */
+       txq->trans_start = jiffies;
+
        if (priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
                fd.cmd |= cpu_to_be32(FM_FD_CMD_UPD);
                skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-- 
2.19.1