IB/rdmavt: Add a send completion helper

This is for use by client drivers to drive
send completions into a CQ.

A new exported table allows for the mapping
of ib_wr_opcode into a ib_wc_opcode.

Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 39 insertions, 1 deletions

diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h
index 2c5183e..d78e99c 100644
--- a/include/rdma/rdmavt_qp.h
+++ b/include/rdma/rdmavt_qp.h
@@ -51,6 +51,7 @@
 #include <rdma/rdma_vt.h>
 #include <rdma/ib_pack.h>
 #include <rdma/ib_verbs.h>
+#include <rdma/rdmavt_cq.h>
 /*
  * Atomic bit definitions for r_aflags.
  */
@@ -527,7 +528,44 @@ static inline void rvt_qp_wqe_unreserve(
 	}
 }
 
-extern const int  ib_rvt_state_ops[];
+extern const enum ib_wc_opcode ib_rvt_wc_opcode[];
+
+/**
+ * rvt_qp_swqe_complete() - insert send completion
+ * @qp - the qp
+ * @wqe - the send wqe
+ * @status - completion status
+ *
+ * Insert a send completion into the completion
+ * queue if the qp indicates it should be done.
+ *
+ * See IBTA 10.7.3.1 for info on completion
+ * control.
+ */
+static inline void rvt_qp_swqe_complete(
+	struct rvt_qp *qp,
+	struct rvt_swqe *wqe,
+	enum ib_wc_status status)
+{
+	if (unlikely(wqe->wr.send_flags & RVT_SEND_RESERVE_USED))
+		return;
+	if (!(qp->s_flags & RVT_S_SIGNAL_REQ_WR) ||
+	    (wqe->wr.send_flags & IB_SEND_SIGNALED) ||
+	     status != IB_WC_SUCCESS) {
+		struct ib_wc wc;
+
+		memset(&wc, 0, sizeof(wc));
+		wc.wr_id = wqe->wr.wr_id;
+		wc.status = status;
+		wc.opcode = ib_rvt_wc_opcode[wqe->wr.opcode];
+		wc.qp = &qp->ibqp;
+		wc.byte_len = wqe->length;
+		rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.send_cq), &wc,
+			     status != IB_WC_SUCCESS);
+	}
+}
+
+extern const int ib_rvt_state_ops[];
 
 struct rvt_dev_info;
 int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err);