[PATCH] IB/ipath: fixes to performance get counters for IB compliance
This patch fixes some problems uncovered during IB compliance testing to
return the right values for error counters returned by the Performance Get
Counters packet.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/infiniband/hw/ipath/ipath_ud.c b/drivers/infiniband/hw/ipath/ipath_ud.c
index 3b6d00b..4b05029 100644
--- a/drivers/infiniband/hw/ipath/ipath_ud.c
+++ b/drivers/infiniband/hw/ipath/ipath_ud.c
@@ -560,7 +560,16 @@
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. */