1 files changed, 39 insertions, 16 deletions

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 7059710154eb..61db1d3bfa0b 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -1306,6 +1306,10 @@ static void igc_tx_olinfo_status(struct igc_ring *tx_ring,
 	olinfo_status |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_IPV4,
 				      (IGC_TXD_POPTS_IXSM << 8));
 
+	/* Use the second timer (free running, in general) for the timestamp */
+	olinfo_status |= IGC_SET_FLAG(tx_flags, IGC_TX_FLAGS_TSTAMP_TIMER_1,
+				      IGC_TXD_PTP2_TIMER_1);
+
 	tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
 }
 
@@ -1649,6 +1653,8 @@ done:
 		if (igc_request_tx_tstamp(adapter, skb, &tstamp_flags)) {
 			skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 			tx_flags |= IGC_TX_FLAGS_TSTAMP | tstamp_flags;
+			if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP_USE_CYCLES)
+				tx_flags |= IGC_TX_FLAGS_TSTAMP_TIMER_1;
 		} else {
 			adapter->tx_hwtstamp_skipped++;
 		}
@@ -1961,9 +1967,9 @@ static struct sk_buff *igc_build_skb(struct igc_ring *rx_ring,
 
 static struct sk_buff *igc_construct_skb(struct igc_ring *rx_ring,
 					 struct igc_rx_buffer *rx_buffer,
-					 struct xdp_buff *xdp,
-					 ktime_t timestamp)
+					 struct igc_xdp_buff *ctx)
 {
+	struct xdp_buff *xdp = &ctx->xdp;
 	unsigned int metasize = xdp->data - xdp->data_meta;
 	unsigned int size = xdp->data_end - xdp->data;
 	unsigned int truesize = igc_get_rx_frame_truesize(rx_ring, size);
@@ -1980,8 +1986,10 @@ static struct sk_buff *igc_construct_skb(struct igc_ring *rx_ring,
 	if (unlikely(!skb))
 		return NULL;
 
-	if (timestamp)
-		skb_hwtstamps(skb)->hwtstamp = timestamp;
+	if (ctx->rx_ts) {
+		skb_shinfo(skb)->tx_flags |= SKBTX_HW_TSTAMP_NETDEV;
+		skb_hwtstamps(skb)->netdev_data = ctx->rx_ts;
+	}
 
 	/* Determine available headroom for copy */
 	headlen = size;
@@ -2581,11 +2589,10 @@ static int igc_clean_rx_irq(struct igc_q_vector *q_vector, const int budget)
 	int xdp_status = 0, rx_buffer_pgcnt;
 
 	while (likely(total_packets < budget)) {
-		union igc_adv_rx_desc *rx_desc;
+		struct igc_xdp_buff ctx = { .rx_ts = NULL };
 		struct igc_rx_buffer *rx_buffer;
+		union igc_adv_rx_desc *rx_desc;
 		unsigned int size, truesize;
-		struct igc_xdp_buff ctx;
-		ktime_t timestamp = 0;
 		int pkt_offset = 0;
 		void *pktbuf;
 
@@ -2612,9 +2619,7 @@ static int igc_clean_rx_irq(struct igc_q_vector *q_vector, const int budget)
 		pktbuf = page_address(rx_buffer->page) + rx_buffer->page_offset;
 
 		if (igc_test_staterr(rx_desc, IGC_RXDADV_STAT_TSIP)) {
-			timestamp = igc_ptp_rx_pktstamp(q_vector->adapter,
-							pktbuf);
-			ctx.rx_ts = timestamp;
+			ctx.rx_ts = pktbuf;
 			pkt_offset = IGC_TS_HDR_LEN;
 			size -= IGC_TS_HDR_LEN;
 		}
@@ -2651,8 +2656,7 @@ static int igc_clean_rx_irq(struct igc_q_vector *q_vector, const int budget)
 		else if (ring_uses_build_skb(rx_ring))
 			skb = igc_build_skb(rx_ring, rx_buffer, &ctx.xdp);
 		else
-			skb = igc_construct_skb(rx_ring, rx_buffer, &ctx.xdp,
-						timestamp);
+			skb = igc_construct_skb(rx_ring, rx_buffer, &ctx);
 
 		/* exit if we failed to retrieve a buffer */
 		if (!skb) {
@@ -2801,9 +2805,7 @@ static int igc_clean_rx_irq_zc(struct igc_q_vector *q_vector, const int budget)
 		ctx->rx_desc = desc;
 
 		if (igc_test_staterr(desc, IGC_RXDADV_STAT_TSIP)) {
-			timestamp = igc_ptp_rx_pktstamp(q_vector->adapter,
-							bi->xdp->data);
-			ctx->rx_ts = timestamp;
+			ctx->rx_ts = bi->xdp->data;
 
 			bi->xdp->data += IGC_TS_HDR_LEN;
 
@@ -6560,6 +6562,24 @@ int igc_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags)
 	return 0;
 }
 
+static ktime_t igc_get_tstamp(struct net_device *dev,
+			      const struct skb_shared_hwtstamps *hwtstamps,
+			      bool cycles)
+{
+	struct igc_adapter *adapter = netdev_priv(dev);
+	struct igc_inline_rx_tstamps *tstamp;
+	ktime_t timestamp;
+
+	tstamp = hwtstamps->netdev_data;
+
+	if (cycles)
+		timestamp = igc_ptp_rx_pktstamp(adapter, tstamp->timer1);
+	else
+		timestamp = igc_ptp_rx_pktstamp(adapter, tstamp->timer0);
+
+	return timestamp;
+}
+
 static const struct net_device_ops igc_netdev_ops = {
 	.ndo_open		= igc_open,
 	.ndo_stop		= igc_close,
@@ -6577,6 +6597,7 @@ static const struct net_device_ops igc_netdev_ops = {
 	.ndo_bpf		= igc_bpf,
 	.ndo_xdp_xmit		= igc_xdp_xmit,
 	.ndo_xsk_wakeup		= igc_xsk_wakeup,
+	.ndo_get_tstamp		= igc_get_tstamp,
 };
 
 /* PCIe configuration access */
@@ -6680,9 +6701,11 @@ static int igc_xdp_rx_hash(const struct xdp_md *_ctx, u32 *hash,
 static int igc_xdp_rx_timestamp(const struct xdp_md *_ctx, u64 *timestamp)
 {
 	const struct igc_xdp_buff *ctx = (void *)_ctx;
+	struct igc_adapter *adapter = netdev_priv(ctx->xdp.rxq->dev);
+	struct igc_inline_rx_tstamps *tstamp = ctx->rx_ts;
 
 	if (igc_test_staterr(ctx->rx_desc, IGC_RXDADV_STAT_TSIP)) {
-		*timestamp = ctx->rx_ts;
+		*timestamp = igc_ptp_rx_pktstamp(adapter, tstamp->timer0);
 
 		return 0;
 	}