netdev - [PATCH 1/2] net: ucc_geth, increase no. of HW RX descriptors

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Message-Id: <1335775015-14718-1-git-send-email-Joakim.Tjernlund@transmode.se>
Date:	Mon, 30 Apr 2012 10:36:54 +0200
From:	Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se>
To:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Cc:	Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se>
Subject: [PATCH 1/2] net: ucc_geth, increase no. of HW RX descriptors

In a busy network we see ucc_geth is dropping RX pkgs every now
and then. Increase the RX queues HW descriptors from
16 to 32 to deal with this.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se>
---
 drivers/net/ethernet/freescale/ucc_geth.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ethernet/freescale/ucc_geth.h b/drivers/net/ethernet/freescale/ucc_geth.h
index 2e395a2..f71b3e7 100644
--- a/drivers/net/ethernet/freescale/ucc_geth.h
+++ b/drivers/net/ethernet/freescale/ucc_geth.h
@@ -877,7 +877,7 @@ struct ucc_geth_hardware_statistics {

 /* Driver definitions */
 #define TX_BD_RING_LEN                          0x10
-#define RX_BD_RING_LEN                          0x10
+#define RX_BD_RING_LEN                          0x20

 #define TX_RING_MOD_MASK(size)                  (size-1)
 #define RX_RING_MOD_MASK(size)                  (size-1)
-- 
1.7.3.4

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