netdev - [PATCH net-next v2 5/5] net: mvpp2: adjust the coalescing parameters

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Date:   Mon, 11 Dec 2017 09:13:29 +0100
From:   Antoine Tenart <antoine.tenart@...e-electrons.com>
To:     davem@...emloft.net
Cc:     Antoine Tenart <antoine.tenart@...e-electrons.com>,
        gregory.clement@...e-electrons.com,
        thomas.petazzoni@...e-electrons.com,
        miquel.raynal@...e-electrons.com, nadavh@...vell.com,
        mw@...ihalf.com, stefanc@...vell.com, ymarkman@...vell.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 5/5] net: mvpp2: adjust the coalescing parameters

This patch adjust the coalescing parameters to the vendor
recommendations for the PPv2 network controller.

Suggested-by: Yan Markman <ymarkman@...vell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com>
---
 drivers/net/ethernet/marvell/mvpp2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index aa72109290c3..a19760736b71 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -454,11 +454,11 @@
 /* Various constants */
 
 /* Coalescing */
-#define MVPP2_TXDONE_COAL_PKTS_THRESH	15
+#define MVPP2_TXDONE_COAL_PKTS_THRESH	64
 #define MVPP2_TXDONE_HRTIMER_PERIOD_NS	1000000UL
 #define MVPP2_TXDONE_COAL_USEC		1000
 #define MVPP2_RX_COAL_PKTS		32
-#define MVPP2_RX_COAL_USEC		100
+#define MVPP2_RX_COAL_USEC		64
 
 /* The two bytes Marvell header. Either contains a special value used
  * by Marvell switches when a specific hardware mode is enabled (not
-- 
2.14.3