linux-kernel - [PATCH] net: bcmgenet: use ethtool_op_get_ts

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Date:   Fri, 30 Aug 2019 14:49:55 -0400
From:   "Ryan M. Collins" <rmc032@...knell.edu>
To:     Doug Berger <opendmb@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net: bcmgenet: use ethtool_op_get_ts_info()

This change enables the use of SW timestamping on the Raspberry Pi 4.

bcmgenet's transmit function bcmgenet_xmit() implements software
timestamping. However the SOF_TIMESTAMPING_TX_SOFTWARE capability was
missing and only SOF_TIMESTAMPING_RX_SOFTWARE was announced. By using
ethtool_ops bcmgenet_ethtool_ops() as get_ts_info(), the
SOF_TIMESTAMPING_TX_SOFTWARE capability is announced.

Similar to commit a8f5cb9e7991 ("smsc95xx: use ethtool_op_get_ts_info()")

Signed-off-by: Ryan M. Collins <rmc032@...knell.edu>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 1586316eb6f1..12cb77ef1081 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1124,6 +1124,7 @@ static const struct ethtool_ops bcmgenet_ethtool_ops = {
 	.set_coalesce		= bcmgenet_set_coalesce,
 	.get_link_ksettings	= bcmgenet_get_link_ksettings,
 	.set_link_ksettings	= bcmgenet_set_link_ksettings,
+	.get_ts_info		= ethtool_op_get_ts_info,
 };
 
 /* Power down the unimac, based on mode. */
-- 
2.23.0