sfc: add transmit timestamping support

Add ethtool op to advertise TX timestamping. Insert a
skb_tx_timestamp call in __efx_enqueue_skb.

Signed-off-by: Izabela Bakollari <ibakolla@redhat.com>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/20260330063236.247057-1-ibakolla@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 362388754a2925d8447f3a5a313b4ef5bf03ded2..c0038b942913f66a56ecaa8732142d9ac0fa0808 100644 (file)
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -231,6 +231,8 @@ static int efx_ethtool_get_ts_info(struct net_device *net_dev,
 {
        struct efx_nic *efx = efx_netdev_priv(net_dev);
 
+       ts_info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE;
+
        efx_ptp_get_ts_info(efx, ts_info);
        return 0;
 }

diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 4dff19b6ef17b62912b132c2f2da72dd8e147922..ea0fc1000476c2d15c211ecbb201e5dee229556a 100644 (file)
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -371,6 +371,8 @@ netdev_tx_t __efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb
        if (!data_mapped && (efx_tx_map_data(tx_queue, skb, segments)))
                goto err;
 
+       skb_tx_timestamp(skb);
+
        efx_tx_maybe_stop_queue(tx_queue);
 
        tx_queue->xmit_pending = true;