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 eaab008..e16751f 100644 (file)
--- 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;
        }
 
                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)
        if (qpn >= QPN_MAX)
                qpn = 2;
        if (qpt->mask && ((qpn & qpt->mask) >> 1) >= dd->n_krcv_queues)