From d3f92aec9549697666f98d195cc9d59add472cfb Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rmody@brocade.com>
Date: Tue, 11 Dec 2012 12:24:52 +0000
Subject: bna: TX Intr Coalescing Fix
Change Details:
For Tx IB, IPM was enabled with inter_pkt_timeo of 0. This caused the
Tx IB not to generate interrupt till inter_pkt_count of packets have been
received. Correct definition for BFI_TX_INTERPKT_TIMEO & BFI_TX_INTERPKT_COUNT
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/brocade/bna/bna_hw_defs.h | 3 ++-
drivers/net/ethernet/brocade/bna/bna_tx_rx.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/brocade/bna/bna_hw_defs.h b/drivers/net/ethernet/brocade/bna/bna_hw_defs.h
index b8c4e21fbf4c..af3f7bb0b3b8 100644
--- a/drivers/net/ethernet/brocade/bna/bna_hw_defs.h
+++ b/drivers/net/ethernet/brocade/bna/bna_hw_defs.h
@@ -46,7 +46,8 @@
#define BFI_MAX_INTERPKT_COUNT 0xFF
#define BFI_MAX_INTERPKT_TIMEO 0xF /* in 0.5us units */
#define BFI_TX_COALESCING_TIMEO 20 /* 20 * 5 = 100us */
-#define BFI_TX_INTERPKT_COUNT 32
+#define BFI_TX_INTERPKT_COUNT 12 /* Pkt Cnt = 12 */
+#define BFI_TX_INTERPKT_TIMEO 15 /* 15 * 0.5 = 7.5us */
#define BFI_RX_COALESCING_TIMEO 12 /* 12 * 5 = 60us */
#define BFI_RX_INTERPKT_COUNT 6 /* Pkt Cnt = 6 */
#define BFI_RX_INTERPKT_TIMEO 3 /* 3 * 0.5 = 1.5us */
diff --git a/drivers/net/ethernet/brocade/bna/bna_tx_rx.c b/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
index bb5467bd3090..4df6d4b50b45 100644
--- a/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
+++ b/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
@@ -3569,7 +3569,7 @@ bna_tx_create(struct bna *bna, struct bnad *bnad,
if (intr_info->intr_type == BNA_INTR_T_INTX)
txq->ib.intr_vector = (1 << txq->ib.intr_vector);
txq->ib.coalescing_timeo = tx_cfg->coalescing_timeo;
- txq->ib.interpkt_timeo = 0; /* Not used */
+ txq->ib.interpkt_timeo = BFI_TX_INTERPKT_TIMEO;
txq->ib.interpkt_count = BFI_TX_INTERPKT_COUNT;
/* TCB */
--
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