i40e: Split bytes and packets from Rx/Tx stats

This makes it so that the Tx and Rx byte and packet counts are
separated from the rest of the statistics.  This allows for better
isolation of these stats when we move them into the 64 bit statistics.

Simplify things by re-ordering how the stats display in ethtool.
Instead of displaying all of the Tx queues as a block, followed by all
the Rx queues, the new order is Tx[0], Rx[0], Tx[1], Rx[1], ..., Tx[n],
Rx[n].  This reduces the loops and cleans up the display for testing
purposes since it is very easy to verify if flow director is doing the
right thing as the Tx and Rx queue pair are shown in pairs.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Author: Alexander Duyck

drivers/net/ethernet/intel/i40e/i40e_debugfs.c

@@ -512,8 +512,8 @@ static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid)
 				 vsi->rx_rings[i].ring_active);
 			dev_info(&pf->pdev->dev,
 				 "    rx_rings[%i]: rx_stats: packets = %lld, bytes = %lld, non_eop_descs = %lld\n",
-				 i, vsi->rx_rings[i].rx_stats.packets,
-				 vsi->rx_rings[i].rx_stats.bytes,
+				 i, vsi->rx_rings[i].stats.packets,
+				 vsi->rx_rings[i].stats.bytes,
 				 vsi->rx_rings[i].rx_stats.non_eop_descs);
 			dev_info(&pf->pdev->dev,
 				 "    rx_rings[%i]: rx_stats: alloc_rx_page_failed = %lld, alloc_rx_buff_failed = %lld\n",
@@ -556,8 +556,8 @@ static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid)
 				 vsi->tx_rings[i].ring_active);
 			dev_info(&pf->pdev->dev,
 				 "    tx_rings[%i]: tx_stats: packets = %lld, bytes = %lld, restart_queue = %lld\n",
-				 i, vsi->tx_rings[i].tx_stats.packets,
-				 vsi->tx_rings[i].tx_stats.bytes,
+				 i, vsi->tx_rings[i].stats.packets,
+				 vsi->tx_rings[i].stats.bytes,
 				 vsi->tx_rings[i].tx_stats.restart_queue);
 			dev_info(&pf->pdev->dev,
 				 "    tx_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n",

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

@@ -587,13 +587,11 @@ static void i40e_get_ethtool_stats(struct net_device *netdev,
 		data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat ==
 			sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 	}
-	for (j = 0; j < vsi->num_queue_pairs; j++) {
-		data[i++] = vsi->tx_rings[j].tx_stats.packets;
-		data[i++] = vsi->tx_rings[j].tx_stats.bytes;
-	}
-	for (j = 0; j < vsi->num_queue_pairs; j++) {
-		data[i++] = vsi->rx_rings[j].rx_stats.packets;
-		data[i++] = vsi->rx_rings[j].rx_stats.bytes;
+	for (j = 0; j < vsi->num_queue_pairs; j++, i += 4) {
+		data[i] = vsi->tx_rings[j].stats.packets;
+		data[i + 1] = vsi->tx_rings[j].stats.bytes;
+		data[i + 2] = vsi->rx_rings[j].stats.packets;
+		data[i + 3] = vsi->rx_rings[j].stats.bytes;
 	}
 	if (vsi == pf->vsi[pf->lan_vsi]) {
 		for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
@@ -641,8 +639,6 @@ static void i40e_get_strings(struct net_device *netdev, u32 stringset,
 			p += ETH_GSTRING_LEN;
 			snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i);
 			p += ETH_GSTRING_LEN;
-		}
-		for (i = 0; i < vsi->num_queue_pairs; i++) {
 			snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i);
 			p += ETH_GSTRING_LEN;
 			snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i);

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -376,8 +376,12 @@ void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 	memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 	if (vsi->rx_rings)
 		for (i = 0; i < vsi->num_queue_pairs; i++) {
+			memset(&vsi->rx_rings[i].stats, 0 ,
+			       sizeof(vsi->rx_rings[i].stats));
 			memset(&vsi->rx_rings[i].rx_stats, 0 ,
 			       sizeof(vsi->rx_rings[i].rx_stats));
+			memset(&vsi->tx_rings[i].stats, 0 ,
+			       sizeof(vsi->tx_rings[i].stats));
 			memset(&vsi->tx_rings[i].tx_stats, 0,
 			       sizeof(vsi->tx_rings[i].tx_stats));
 		}
@@ -708,14 +712,14 @@ void i40e_update_stats(struct i40e_vsi *vsi)
 		struct i40e_ring *p;
 
 		p = &vsi->rx_rings[q];
-		rx_b += p->rx_stats.bytes;
-		rx_p += p->rx_stats.packets;
+		rx_b += p->stats.bytes;
+		rx_p += p->stats.packets;
 		rx_buf += p->rx_stats.alloc_rx_buff_failed;
 		rx_page += p->rx_stats.alloc_rx_page_failed;
 
 		p = &vsi->tx_rings[q];
-		tx_b += p->tx_stats.bytes;
-		tx_p += p->tx_stats.packets;
+		tx_b += p->stats.bytes;
+		tx_p += p->stats.packets;
 		tx_restart += p->tx_stats.restart_queue;
 		tx_busy += p->tx_stats.tx_busy;
 	}

drivers/net/ethernet/intel/i40e/i40e_txrx.c

@@ -305,14 +305,14 @@ static bool i40e_check_tx_hang(struct i40e_ring *tx_ring)
 	 * run the check_tx_hang logic with a transmit completion
 	 * pending but without time to complete it yet.
 	 */
-	if ((tx_ring->tx_stats.tx_done_old == tx_ring->tx_stats.packets) &&
+	if ((tx_ring->tx_stats.tx_done_old == tx_ring->stats.packets) &&
 	    tx_pending) {
 		/* make sure it is true for two checks in a row */
 		ret = test_and_set_bit(__I40E_HANG_CHECK_ARMED,
 				       &tx_ring->state);
 	} else {
 		/* update completed stats and disarm the hang check */
-		tx_ring->tx_stats.tx_done_old = tx_ring->tx_stats.packets;
+		tx_ring->tx_stats.tx_done_old = tx_ring->stats.packets;
 		clear_bit(__I40E_HANG_CHECK_ARMED, &tx_ring->state);
 	}
 
@@ -411,8 +411,8 @@ static bool i40e_clean_tx_irq(struct i40e_ring *tx_ring, int budget)
 
 	i += tx_ring->count;
 	tx_ring->next_to_clean = i;
-	tx_ring->tx_stats.bytes += total_bytes;
-	tx_ring->tx_stats.packets += total_packets;
+	tx_ring->stats.bytes += total_bytes;
+	tx_ring->stats.packets += total_packets;
 	tx_ring->q_vector->tx.total_bytes += total_bytes;
 	tx_ring->q_vector->tx.total_packets += total_packets;
 
@@ -1075,8 +1075,8 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget)
 	}
 
 	rx_ring->next_to_clean = i;
-	rx_ring->rx_stats.packets += total_rx_packets;
-	rx_ring->rx_stats.bytes += total_rx_bytes;
+	rx_ring->stats.packets += total_rx_packets;
+	rx_ring->stats.bytes += total_rx_bytes;
 	rx_ring->q_vector->rx.total_packets += total_rx_packets;
 	rx_ring->q_vector->rx.total_bytes += total_rx_bytes;
 

drivers/net/ethernet/intel/i40e/i40e_txrx.h

@@ -126,17 +126,18 @@ struct i40e_rx_buffer {
 	unsigned int page_offset;
 };
 
-struct i40e_tx_queue_stats {
+struct i40e_queue_stats {
 	u64 packets;
 	u64 bytes;
+};
+
+struct i40e_tx_queue_stats {
 	u64 restart_queue;
 	u64 tx_busy;
 	u64 tx_done_old;
 };
 
 struct i40e_rx_queue_stats {
-	u64 packets;
-	u64 bytes;
 	u64 non_eop_descs;
 	u64 alloc_rx_page_failed;
 	u64 alloc_rx_buff_failed;
@@ -215,6 +216,7 @@ struct i40e_ring {
 	bool ring_active;		/* is ring online or not */
 
 	/* stats structs */
+	struct i40e_queue_stats	stats;
 	union {
 		struct i40e_tx_queue_stats tx_stats;
 		struct i40e_rx_queue_stats rx_stats;