Backmerge tag 'v4.12-rc7' into drm-next

[sfrench/cifs-2.6.git] / drivers / infiniband / hw / bnxt_re / qplib_res.h

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h
index 6277d802ca4bc7e231e010331b5045c92cb57aad..2e4855509719cbf5ffa1725c8bee4d7e8e2c2f34 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h
@@ -48,6 +48,10 @@ extern const struct bnxt_qplib_gid bnxt_qplib_gid_zero;
 
 #define HWQ_CMP(idx, hwq)      ((idx) & ((hwq)->max_elements - 1))
 
+#define HWQ_FREE_SLOTS(hwq)    (hwq->max_elements - \
+                               ((HWQ_CMP(hwq->prod, hwq)\
+                               - HWQ_CMP(hwq->cons, hwq))\
+                               & (hwq->max_elements - 1)))
 enum bnxt_qplib_hwq_type {
        HWQ_TYPE_CTX,
        HWQ_TYPE_QUEUE,