dpaa2-eth: Add new DPNI statistics counters

Recent firmware versions expose more  DPNI counters.
Export relevant ones via ethtool -S.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c

@@ -28,6 +28,11 @@ static char dpaa2_ethtool_stats[][ETH_GSTRING_LEN] = {
 	"[hw] rx nobuffer discards",
 	"[hw] tx discarded frames",
 	"[hw] tx confirmed frames",
+	"[hw] tx dequeued bytes",
+	"[hw] tx dequeued frames",
+	"[hw] tx rejected bytes",
+	"[hw] tx rejected frames",
+	"[hw] tx pending frames",
 };
 
 #define DPAA2_ETH_NUM_STATS	ARRAY_SIZE(dpaa2_ethtool_stats)
@@ -192,16 +197,26 @@ static void dpaa2_eth_get_ethtool_stats(struct net_device *net_dev,
 		sizeof(dpni_stats.page_0),
 		sizeof(dpni_stats.page_1),
 		sizeof(dpni_stats.page_2),
+		sizeof(dpni_stats.page_3),
+		sizeof(dpni_stats.page_4),
+		sizeof(dpni_stats.page_5),
+		sizeof(dpni_stats.page_6),
 	};
 
 	memset(data, 0,
 	       sizeof(u64) * (DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS));
 
 	/* Print standard counters, from DPNI statistics */
-	for (j = 0; j <= 2; j++) {
+	for (j = 0; j <= 6; j++) {
+		/* We're not interested in pages 4 & 5 for now */
+		if (j == 4 || j == 5)
+			continue;
 		err = dpni_get_statistics(priv->mc_io, 0, priv->mc_token,
 					  j, &dpni_stats);
-		if (err != 0)
+		if (err == -EINVAL)
+			/* Older firmware versions don't support all pages */
+			memset(&dpni_stats, 0, sizeof(dpni_stats));
+		else
 			netdev_warn(net_dev, "dpni_get_stats(%d) failed\n", j);
 
 		num_cnt = dpni_stats_page_size[j] / sizeof(u64);

drivers/net/ethernet/freescale/dpaa2/dpni.c

@@ -1470,7 +1470,7 @@ int dpni_get_queue(struct fsl_mc_io *mc_io,
  * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
  * @token:	Token of DPNI object
  * @page:	Selects the statistics page to retrieve, see
- *		DPNI_GET_STATISTICS output. Pages are numbered 0 to 2.
+ *		DPNI_GET_STATISTICS output. Pages are numbered 0 to 6.
  * @stat:	Structure containing the statistics
  *
  * Return:	'0' on Success; Error code otherwise.

drivers/net/ethernet/freescale/dpaa2/dpni.h

@@ -416,6 +416,26 @@ int dpni_get_tx_data_offset(struct fsl_mc_io	*mc_io,
  *	lack of buffers
  * @page_2.egress_discarded_frames: Egress discarded frame count
  * @page_2.egress_confirmed_frames: Egress confirmed frame count
+ * @page3: Page_3 statistics structure
+ * @page_3.egress_dequeue_bytes: Cumulative count of the number of bytes
+ *	dequeued from egress FQs
+ * @page_3.egress_dequeue_frames: Cumulative count of the number of frames
+ *	dequeued from egress FQs
+ * @page_3.egress_reject_bytes: Cumulative count of the number of bytes in
+ *	egress frames whose enqueue was rejected
+ * @page_3.egress_reject_frames: Cumulative count of the number of egress
+ *	frames whose enqueue was rejected
+ * @page_4: Page_4 statistics structure: congestion points
+ * @page_4.cgr_reject_frames: number of rejected frames due to congestion point
+ * @page_4.cgr_reject_bytes: number of rejected bytes due to congestion point
+ * @page_5: Page_5 statistics structure: policer
+ * @page_5.policer_cnt_red: NUmber of red colored frames
+ * @page_5.policer_cnt_yellow: number of yellow colored frames
+ * @page_5.policer_cnt_green: number of green colored frames
+ * @page_5.policer_cnt_re_red: number of recolored red frames
+ * @page_5.policer_cnt_re_yellow: number of recolored yellow frames
+ * @page_6: Page_6 statistics structure
+ * @page_6.tx_pending_frames: total number of frames pending in egress FQs
  * @raw: raw statistics structure, used to index counters
  */
 union dpni_statistics {
@@ -442,6 +462,26 @@ union dpni_statistics {
 		u64 egress_discarded_frames;
 		u64 egress_confirmed_frames;
 	} page_2;
+	struct {
+		u64 egress_dequeue_bytes;
+		u64 egress_dequeue_frames;
+		u64 egress_reject_bytes;
+		u64 egress_reject_frames;
+	} page_3;
+	struct {
+		u64 cgr_reject_frames;
+		u64 cgr_reject_bytes;
+	} page_4;
+	struct {
+		u64 policer_cnt_red;
+		u64 policer_cnt_yellow;
+		u64 policer_cnt_green;
+		u64 policer_cnt_re_red;
+		u64 policer_cnt_re_yellow;
+	} page_5;
+	struct {
+		u64 tx_pending_frames;
+	} page_6;
 	struct {
 		u64 counter[DPNI_STATISTICS_CNT];
 	} raw;