From: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Date: Tue, 11 Jan 2011 01:42:22 +0000 (-0800)
Subject: IB/qib: Change QPN increment
X-Git-Tag: v2.6.38-rc1~406^2^7~5
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=7c3edd3ff3098093e594dbcbc9dbeeae09b1b4a0;p=~shefty%2Frdma-dev.git

IB/qib: Change QPN increment

Changing from +1 to +2 allows for better QP distribution across
receive contexts.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c
index eaab008466c..e16751f8639 100644
--- a/drivers/infiniband/hw/qib/qib_qp.c
+++ b/drivers/infiniband/hw/qib/qib_qp.c
@@ -137,7 +137,7 @@ static int alloc_qpn(struct qib_devdata *dd, struct qib_qpn_table *qpt,
 		goto bail;
 	}
 
-	qpn = qpt->last + 1;
+	qpn = qpt->last + 2;
 	if (qpn >= QPN_MAX)
 		qpn = 2;
 	if (qpt->mask && ((qpn & qpt->mask) >> 1) >= dd->n_krcv_queues)