net: bcmasp: enable SW timestamping

Add skb_tx_timestamp() call and enable support for SW
timestamping.

Signed-off-by: Justin Chen <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Ryceancurry

drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c

@@ -496,4 +496,5 @@ const struct ethtool_ops bcmasp_ethtool_ops = {
 	.get_strings		= bcmasp_get_strings,
 	.get_ethtool_stats	= bcmasp_get_ethtool_stats,
 	.get_sset_count		= bcmasp_get_sset_count,
+	.get_ts_info		= ethtool_op_get_ts_info,
 };

drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c

@@ -364,6 +364,9 @@ static netdev_tx_t bcmasp_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	intf->tx_spb_index = spb_index;
 	intf->tx_spb_dma_valid = valid;
+
+	skb_tx_timestamp(skb);
+
 	bcmasp_intf_tx_write(intf, intf->tx_spb_dma_valid);
 
 	if (tx_spb_ring_full(intf, MAX_SKB_FRAGS + 1))