staging: dpaa2-switch: export the 'no buffer' counter in ethtool

Export the DPSW_CNT_ING_NO_BUFFER_DISCARD counter in ethtool for each
switch interface. This is useful for debugging purposes.
Signed-off-by: Ionut-robert Aron <ionut-robert.aron@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20201119165017.806696-2-ciorneiioana@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2017-2018 NXP
+ * Copyright 2017-2020 NXP
  *
  */
 
@@ -10,12 +10,14 @@
 
 /* DPSW Version */
 #define DPSW_VER_MAJOR		8
-#define DPSW_VER_MINOR		1
+#define DPSW_VER_MINOR		5
 
 #define DPSW_CMD_BASE_VERSION	1
+#define DPSW_CMD_VERSION_2	2
 #define DPSW_CMD_ID_OFFSET	4
 
 #define DPSW_CMD_ID(id)	(((id) << DPSW_CMD_ID_OFFSET) | DPSW_CMD_BASE_VERSION)
+#define DPSW_CMD_V2(id) (((id) << DPSW_CMD_ID_OFFSET) | DPSW_CMD_VERSION_2)
 
 /* Command IDs */
 #define DPSW_CMDID_CLOSE                    DPSW_CMD_ID(0x800)
@@ -38,7 +40,7 @@
 #define DPSW_CMDID_IF_SET_TCI               DPSW_CMD_ID(0x030)
 #define DPSW_CMDID_IF_SET_STP               DPSW_CMD_ID(0x031)
 
-#define DPSW_CMDID_IF_GET_COUNTER           DPSW_CMD_ID(0x034)
+#define DPSW_CMDID_IF_GET_COUNTER           DPSW_CMD_V2(0x034)
 
 #define DPSW_CMDID_IF_ENABLE                DPSW_CMD_ID(0x03D)
 #define DPSW_CMDID_IF_DISABLE               DPSW_CMD_ID(0x03E)

drivers/staging/fsl-dpaa2/ethsw/dpsw.h

@@ -334,9 +334,10 @@ enum dpsw_accepted_frames {
  * @DPSW_CNT_ING_BCAST_FRAME: Counts ingress broadcast frames
  * @DPSW_CNT_ING_BCAST_BYTES: Counts ingress broadcast bytes
  * @DPSW_CNT_EGR_FRAME: Counts egress frames
- * @DPSW_CNT_EGR_BYTE: Counts eEgress bytes
+ * @DPSW_CNT_EGR_BYTE: Counts egress bytes
  * @DPSW_CNT_EGR_FRAME_DISCARD: Counts discarded egress frames
  * @DPSW_CNT_EGR_STP_FRAME_DISCARD: Counts egress STP discarded frames
+ * @DPSW_CNT_ING_NO_BUFF_DISCARD: Counts ingress no buffer discarded frames
  */
 enum dpsw_counter {
 	DPSW_CNT_ING_FRAME = 0x0,
@@ -350,7 +351,8 @@ enum dpsw_counter {
 	DPSW_CNT_EGR_FRAME = 0x8,
 	DPSW_CNT_EGR_BYTE = 0x9,
 	DPSW_CNT_EGR_FRAME_DISCARD = 0xa,
-	DPSW_CNT_EGR_STP_FRAME_DISCARD = 0xb
+	DPSW_CNT_EGR_STP_FRAME_DISCARD = 0xb,
+	DPSW_CNT_ING_NO_BUFF_DISCARD = 0xc,
 };
 
 int dpsw_if_get_counter(struct fsl_mc_io *mc_io,

drivers/staging/fsl-dpaa2/ethsw/ethsw-ethtool.c

@@ -24,7 +24,7 @@ static struct {
 	{DPSW_CNT_EGR_FRAME,		"tx frames"},
 	{DPSW_CNT_EGR_BYTE,		"tx bytes"},
 	{DPSW_CNT_EGR_FRAME_DISCARD,	"tx discarded frames"},
-
+	{DPSW_CNT_ING_NO_BUFF_DISCARD,	"rx discarded no buffer frames"},
 };
 
 #define DPAA2_SWITCH_NUM_COUNTERS	ARRAY_SIZE(dpaa2_switch_ethtool_counters)