[PATCH 1/5] RDMA/rxe: Move code to rxe_prepare_atomic_res()

[Bob Pearson <rpearsonhpe@gmail.com>]

Separate the code that prepares the atomic responder resource
into a subroutine. This is preparation for merging the normal
and retry atomic responder flows.

Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
---
 drivers/infiniband/sw/rxe/rxe_resp.c | 37 ++++++++++++++++++----------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
index f4f6ee5d81fe..69723bc1a071 100644
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -1019,10 +1019,27 @@ static int send_ack(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
 	return err;
 }
 
+static struct resp_res *rxe_prepare_atomic_res(struct rxe_qp *qp,
+					       struct rxe_pkt_info *pkt)
+{
+	struct resp_res *res;
+
+	res = &qp->resp.resources[qp->resp.res_head];
+	rxe_advance_resp_resource(qp);
+	free_rd_atomic_resource(qp, res);
+
+	res->type = RXE_ATOMIC_MASK;
+	res->first_psn = pkt->psn;
+	res->last_psn = pkt->psn;
+	res->cur_psn = pkt->psn;
+
+	return res;
+}
+
 static int send_atomic_ack(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
 			   u8 syndrome)
 {
-	int rc = 0;
+	int err = 0;
 	struct rxe_pkt_info ack_pkt;
 	struct sk_buff *skb;
 	struct resp_res *res;
@@ -1031,28 +1048,22 @@ static int send_atomic_ack(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
 				 IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE, 0, pkt->psn,
 				 syndrome);
 	if (!skb) {
-		rc = -ENOMEM;
+		err = -ENOMEM;
 		goto out;
 	}
 
-	res = &qp->resp.resources[qp->resp.res_head];
-	free_rd_atomic_resource(qp, res);
-	rxe_advance_resp_resource(qp);
-
 	skb_get(skb);
-	res->type = RXE_ATOMIC_MASK;
+
+	res = rxe_prepare_atomic_res(qp, pkt);
 	res->atomic.skb = skb;
-	res->first_psn = ack_pkt.psn;
-	res->last_psn  = ack_pkt.psn;
-	res->cur_psn   = ack_pkt.psn;
 
-	rc = rxe_xmit_packet(qp, &ack_pkt, skb);
-	if (rc) {
+	err = rxe_xmit_packet(qp, &ack_pkt, skb);
+	if (err) {
 		pr_err_ratelimited("Failed sending ack\n");
 		rxe_put(qp);
 	}
 out:
-	return rc;
+	return err;
 }
 
 static enum resp_states acknowledge(struct rxe_qp *qp,
-- 
2.34.1