[PATCH net-next 1/2] net: ti: icssg: Derive stats array lengths from ARRAY_SIZE

[MD Danish Anwar]

Replace the manually maintained ICSSG_NUM_MIIG_STATS and
ICSSG_NUM_PA_STATS constants with ARRAY_SIZE() expressions derived
directly from the corresponding stat descriptor arrays, so that adding
new entries to icssg_all_miig_stats[] or icssg_all_pa_stats[] no longer
requires a separate update to a numeric constant.

To make this self-contained, break the circular include dependency
between icssg_stats.h and icssg_prueth.h:

  - icssg_stats.h previously included icssg_prueth.h (transitively
    pulling in icssg_switch_map.h and ETH_GSTRING_LEN).  Replace that
    with direct includes of <linux/ethtool.h>, <linux/kernel.h> and
    "icssg_switch_map.h".

  - icssg_prueth.h now includes icssg_stats.h, giving it access to
    the ARRAY_SIZE-based ICSSG_NUM_MIIG_STATS and ICSSG_NUM_PA_STATS
    before they are used in the prueth_emac struct and ICSSG_NUM_STATS.

Signed-off-by: MD Danish Anwar <danishanwar@xxxxxx>
---
 drivers/net/ethernet/ti/icssg/icssg_prueth.h | 3 +--
 drivers/net/ethernet/ti/icssg/icssg_stats.h  | 7 ++++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index df93d15c5b78..e2ccecb0a0dd 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -43,6 +43,7 @@
 
 #include "icssg_config.h"
 #include "icss_iep.h"
+#include "icssg_stats.h"
 #include "icssg_switch_map.h"
 
 #define PRUETH_MAX_MTU          (2000 - ETH_HLEN - ETH_FCS_LEN)
@@ -57,8 +58,6 @@
 
 #define ICSSG_MAX_RFLOWS	8	/* per slice */
 
-#define ICSSG_NUM_PA_STATS	32
-#define ICSSG_NUM_MIIG_STATS	60
 /* Number of ICSSG related stats */
 #define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS)
 #define ICSSG_NUM_STANDARD_STATS 31
diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.h b/drivers/net/ethernet/ti/icssg/icssg_stats.h
index 5ec0b38e0c67..b854eb587c1e 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_stats.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_stats.h
@@ -8,10 +8,15 @@
 #ifndef __NET_TI_ICSSG_STATS_H
 #define __NET_TI_ICSSG_STATS_H
 
-#include "icssg_prueth.h"
+#include <linux/ethtool.h>
+#include <linux/kernel.h>
+#include "icssg_switch_map.h"
 
 #define STATS_TIME_LIMIT_1G_MS    25000    /* 25 seconds @ 1G */
 
+#define ICSSG_NUM_MIIG_STATS	ARRAY_SIZE(icssg_all_miig_stats)
+#define ICSSG_NUM_PA_STATS	ARRAY_SIZE(icssg_all_pa_stats)
+
 struct miig_stats_regs {
 	/* Rx */
 	u32 rx_packets;
-- 
2.34.1