netdev - [net-next-2.6 PATCH 3/4] enic: Get/Set interrupt resource index for transmit and receive queues

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Message-ID: <20110609203702.31838.67304.stgit@savbu-pc100.cisco.com>
Date:	Thu, 09 Jun 2011 13:37:02 -0700
From:	Vasanthy Kolluri <vkolluri@...co.com>
To:	netdev@...r.kernel.org, davem@...emloft.net
Subject: [net-next-2.6 PATCH 3/4] enic: Get/Set interrupt resource index for
	transmit and receive queues

From: Vasanthy Kolluri <vkolluri@...co.com>

Instead of deriving the index of a transmit/receive interrupt resource
from the transmit/receive queue index, always save and retrieve it
using an additional variable.

Signed-off-by: Christian Benvenuti <benve@...co.com>
Signed-off-by: Danny Guo <dannguo@...co.com>
Signed-off-by: Vasanthy Kolluri <vkolluri@...co.com>
Signed-off-by: Roopa Prabhu <roprabhu@...co.com>
Signed-off-by: David Wang <dwang2@...co.com>
---
 drivers/net/enic/enic.h      |    2 +-
 drivers/net/enic/enic_main.c |    4 ++--
 drivers/net/enic/vnic_cq.c   |    2 ++
 drivers/net/enic/vnic_cq.h   |    1 +
 4 files changed, 6 insertions(+), 3 deletions(-)


diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index 23e2103..2dcf310 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -32,7 +32,7 @@
 
 #define DRV_NAME		"enic"
 #define DRV_DESCRIPTION		"Cisco VIC Ethernet NIC Driver"
-#define DRV_VERSION		"2.1.1.17"
+#define DRV_VERSION		"2.1.1.19"
 #define DRV_COPYRIGHT		"Copyright 2008-2011 Cisco Systems, Inc"
 
 #define ENIC_BARS_MAX		6
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index e990988..eee2526 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -153,12 +153,12 @@ static inline unsigned int enic_legacy_notify_intr(void)
 
 static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq)
 {
-	return rq;
+	return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
 }
 
 static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq)
 {
-	return enic->rq_count + wq;
+	return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
 }
 
 static inline unsigned int enic_msix_err_intr(struct enic *enic)
diff --git a/drivers/net/enic/vnic_cq.c b/drivers/net/enic/vnic_cq.c
index b86d6ef..0daa1c7 100644
--- a/drivers/net/enic/vnic_cq.c
+++ b/drivers/net/enic/vnic_cq.c
@@ -74,6 +74,8 @@ void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
 	iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
 	iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
 	writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
+
+	cq->interrupt_offset = interrupt_offset;
 }
 
 void vnic_cq_clean(struct vnic_cq *cq)
diff --git a/drivers/net/enic/vnic_cq.h b/drivers/net/enic/vnic_cq.h
index 552d3da..579315c 100644
--- a/drivers/net/enic/vnic_cq.h
+++ b/drivers/net/enic/vnic_cq.h
@@ -57,6 +57,7 @@ struct vnic_cq {
 	struct vnic_dev_ring ring;
 	unsigned int to_clean;
 	unsigned int last_color;
+	unsigned int interrupt_offset;
 };
 
 static inline unsigned int vnic_cq_service(struct vnic_cq *cq,

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