linux-kernel - [PATCH net 2/8] net: bcmgenet: correct MIB access of UniMAC RUNT counters

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Date:   Thu,  9 Mar 2017 16:49:00 -0800
From:   Doug Berger <opendmb@...il.com>
To:     f.fainelli@...il.com
Cc:     pgynther@...gle.com, jaedon.shin@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Doug Berger <doug.berger@...adcom.com>
Subject: [PATCH net 2/8] net: bcmgenet: correct MIB access of UniMAC RUNT counters

From: Doug Berger <doug.berger@...adcom.com>

The gap between the Tx status counters and the Rx RUNT counters is now
being added to allow correct reporting of the registers.

refs #SWLINUX-4311

Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
Signed-off-by: Doug Berger <doug.berger@...adcom.com>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index f0fb7eca8eb4..01a172d95328 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -876,13 +876,16 @@ static void bcmgenet_update_mib_counters(struct bcmgenet_priv *priv)
 		case BCMGENET_STAT_NETDEV:
 		case BCMGENET_STAT_SOFT:
 			continue;
-		case BCMGENET_STAT_MIB_RX:
-		case BCMGENET_STAT_MIB_TX:
 		case BCMGENET_STAT_RUNT:
-			if (s->type != BCMGENET_STAT_MIB_RX)
-				offset = BCMGENET_STAT_OFFSET;
+			offset += BCMGENET_STAT_OFFSET;
+			/* fall through */
+		case BCMGENET_STAT_MIB_TX:
+			offset += BCMGENET_STAT_OFFSET;
+			/* fall through */
+		case BCMGENET_STAT_MIB_RX:
 			val = bcmgenet_umac_readl(priv,
 						  UMAC_MIB_START + j + offset);
+			offset = 0;	/* Reset Offset */
 			break;
 		case BCMGENET_STAT_MISC:
 			if (GENET_IS_V1(priv)) {
-- 
2.11.1