[PATCH] IB/ipath: fixes to performance get counters for IB compliance

[linux-2.6-omap-h63xx.git] / drivers / infiniband / hw / ipath / ipath_ud.c

diff --git a/drivers/infiniband/hw/ipath/ipath_ud.c b/drivers/infiniband/hw/ipath/ipath_ud.c
index 3b6d00b9b8be5ecaeb2286c41f2dfa20fb4bc476..4b0502907f3c2d780640bb16f7eaf0f7bc17b3d8 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_ud.c
+++ b/drivers/infiniband/hw/ipath/ipath_ud.c
@@ -560,7 +560,16 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
        spin_lock_irqsave(&rq->lock, flags);
        if (rq->tail == rq->head) {
                spin_unlock_irqrestore(&rq->lock, flags);
-               dev->n_pkt_drops++;
+               /*
+                * Count VL15 packets dropped due to no receive buffer.
+                * Otherwise, count them as buffer overruns since usually,
+                * the HW will be able to receive packets even if there are
+                * no QPs with posted receive buffers.
+                */
+               if (qp->ibqp.qp_num == 0)
+                       dev->n_vl15_dropped++;
+               else
+                       dev->rcv_errors++;
                goto bail;
        }
        /* Silently drop packets which are too big. */