1 files changed, 68 insertions, 10 deletions

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 6f557e843e49..98de34d0ce07 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -1271,10 +1271,21 @@ static u32 igc_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
 	cmd_type |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_TSO,
 				 (IGC_ADVTXD_DCMD_TSE));
 
-	/* set timestamp bit if present */
+	/* set timestamp bit if present, will select the register set
+	 * based on the _TSTAMP(_X) bit.
+	 */
 	cmd_type |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_TSTAMP,
 				 (IGC_ADVTXD_MAC_TSTAMP));
 
+	cmd_type |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_TSTAMP_1,
+				 (IGC_ADVTXD_TSTAMP_REG_1));
+
+	cmd_type |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_TSTAMP_2,
+				 (IGC_ADVTXD_TSTAMP_REG_2));
+
+	cmd_type |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_TSTAMP_3,
+				 (IGC_ADVTXD_TSTAMP_REG_3));
+
 	/* insert frame checksum */
 	cmd_type ^= IGC_SET_FLAG(skb->no_fcs, 1, IGC_ADVTXD_DCMD_IFCS);
 
@@ -1533,6 +1544,26 @@ static int igc_tso(struct igc_ring *tx_ring,
 	return 1;
 }
 
+static bool igc_request_tx_tstamp(struct igc_adapter *adapter, struct sk_buff *skb, u32 *flags)
+{
+	int i;
+
+	for (i = 0; i < IGC_MAX_TX_TSTAMP_REGS; i++) {
+		struct igc_tx_timestamp_request *tstamp = &adapter->tx_tstamp[i];
+
+		if (tstamp->skb)
+			continue;
+
+		tstamp->skb = skb_get(skb);
+		tstamp->start = jiffies;
+		*flags = tstamp->flags;
+
+		return true;
+	}
+
+	return false;
+}
+
 static netdev_tx_t igc_xmit_frame_ring(struct sk_buff *skb,
 				       struct igc_ring *tx_ring)
 {
@@ -1614,14 +1645,12 @@ done:
 		 * timestamping request.
 		 */
 		unsigned long flags;
+		u32 tstamp_flags;
 
 		spin_lock_irqsave(&adapter->ptp_tx_lock, flags);
-		if (!adapter->ptp_tx_skb) {
+		if (igc_request_tx_tstamp(adapter, skb, &tstamp_flags)) {
 			skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-			tx_flags |= IGC_TX_FLAGS_TSTAMP;
-
-			adapter->ptp_tx_skb = skb_get(skb);
-			adapter->ptp_tx_start = jiffies;
+			tx_flags |= IGC_TX_FLAGS_TSTAMP | tstamp_flags;
 		} else {
 			adapter->tx_hwtstamp_skipped++;
 		}
@@ -6162,6 +6191,26 @@ static int igc_tsn_clear_schedule(struct igc_adapter *adapter)
 	return 0;
 }
 
+static void igc_taprio_stats(struct net_device *dev,
+			     struct tc_taprio_qopt_stats *stats)
+{
+	/* When Strict_End is enabled, the tx_overruns counter
+	 * will always be zero.
+	 */
+	stats->tx_overruns = 0;
+}
+
+static void igc_taprio_queue_stats(struct net_device *dev,
+				   struct tc_taprio_qopt_queue_stats *queue_stats)
+{
+	struct tc_taprio_qopt_stats *stats = &queue_stats->stats;
+
+	/* When Strict_End is enabled, the tx_overruns counter
+	 * will always be zero.
+	 */
+	stats->tx_overruns = 0;
+}
+
 static int igc_save_qbv_schedule(struct igc_adapter *adapter,
 				 struct tc_taprio_qopt_offload *qopt)
 {
@@ -6173,11 +6222,20 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter,
 	size_t n;
 	int i;
 
-	if (qopt->cmd == TAPRIO_CMD_DESTROY)
+	switch (qopt->cmd) {
+	case TAPRIO_CMD_REPLACE:
+		break;
+	case TAPRIO_CMD_DESTROY:
 		return igc_tsn_clear_schedule(adapter);
-
-	if (qopt->cmd != TAPRIO_CMD_REPLACE)
+	case TAPRIO_CMD_STATS:
+		igc_taprio_stats(adapter->netdev, &qopt->stats);
+		return 0;
+	case TAPRIO_CMD_QUEUE_STATS:
+		igc_taprio_queue_stats(adapter->netdev, &qopt->queue_stats);
+		return 0;
+	default:
 		return -EOPNOTSUPP;
+	}
 
 	if (qopt->base_time < 0)
 		return -ERANGE;
@@ -6433,7 +6491,7 @@ static int igc_xdp_xmit(struct net_device *dev, int num_frames,
 	struct igc_ring *ring;
 	int i, drops;
 
-	if (unlikely(test_bit(__IGC_DOWN, &adapter->state)))
+	if (unlikely(!netif_carrier_ok(dev)))
 		return -ENETDOWN;
 
 	if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))