netdev - [RESEND][NET-NEXT PATCH 12/29] ixgbe: fix bug with lots of tx queues

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Message-ID: <20080912025817.6234.36245.stgit@jtkirshe-mobile.jf.intel.com>
Date:	Thu, 11 Sep 2008 19:58:29 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	jeff@...zik.org
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	akpm@...ux-foundation.org,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [RESEND][NET-NEXT PATCH 12/29] ixgbe: fix bug with lots of tx queues

From: Jesse Brandeburg <jesse.brandeburg@...el.com>

when using more than 8 tx queues you can overrun the 8 bit v_idx
field, so change it to 16 bits to represent the maximum number
of queues (one for each bit)

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---

 drivers/net/ixgbe/ixgbe.h |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 5ba0384..064af67 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -152,9 +152,9 @@ struct ixgbe_ring {
 	struct net_lro_mgr lro_mgr;
 	bool lro_used;
 	struct ixgbe_queue_stats stats;
-	u8 v_idx; /* maps directly to the index for this ring in the hardware
-		   * vector array, can also be used for finding the bit in EICR
-		   * and friends that represents the vector for this ring */
+	u16 v_idx; /* maps directly to the index for this ring in the hardware
+	           * vector array, can also be used for finding the bit in EICR
+	           * and friends that represents the vector for this ring */
 
 
 	u16 work_limit;                /* max work per interrupt */

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